An apparatus for expanding feed

Abstract

This invention relates to the field of feed processing technology and discloses an extrusion device for feed processing, comprising a shell, an internal cavity, and a screw rotatably connected through the inner wall of the cavity; it also includes an extrusion assembly for extruding dispersed feed after kneading; a blade changing assembly for periodically changing the blades; and a grinding assembly for grinding the blades. The extrusion assembly enables the kneading cylinder to knead the feed that has just passed through the filter screen, preventing the material from becoming loose, thus improving the feed forming rate and quality, resulting in a higher appearance and better texture of the expanded feed product, and reducing breakage. The cooperation between the outer and inner perforated discs allows the inner disc to achieve three different particle sizes, which can be adjusted by the operator according to processing needs. The adjustment operation is convenient and time-saving, with minimal impact on production progress.

Description

Technical Field

[0001] This invention relates to the field of feed processing technology, and more specifically to an extrusion device for feed processing. Background Technology

[0002] In the modern feed processing industry, feed quality plays a decisive role in animal growth, development, health, and farming efficiency. Feed extrusion, as a key processing technology, is receiving increasing attention and application. Feed extrusion involves processing feed under high temperature and pressure using an extrusion device, causing the raw materials to expand, loosen, and mature. This process not only effectively kills bacteria and insects, improving feed hygiene, but also significantly improves digestibility and optimizes palatability, greatly benefiting animal health and feed intake. Extruded feed exhibits significantly improved quality and palatability, making it easier for livestock to consume.

[0003] However, the existing technology has the following problems: 1. In existing feed extrusion processing technology, screw extruders are typically used to mix and extrude the feed. A filter screen is usually installed inside the screw extruder near the outlet. After passing through the filter screen, the feed, which has been mixed into a whole, forms multiple small strips. This loosens the connection between the different parts of the feed, making it difficult for them to coalesce into a whole in a short time. As a result, the feed may experience local breakage, fragmentation, or adhesion during the subsequent extrusion process. Consequently, the extruded feed is prone to looseness and has poor overall stability, thus affecting product quality.

[0004] 2. In the existing technology for feed extrusion processing, it is necessary to process products with different particle sizes. When processing extruded feed with different particle size requirements, it is necessary for workers to change extruders with different orifice diameters. The change operation is relatively troublesome. When changing the extruder, production operations cannot be carried out temporarily, which has a certain impact on the production progress. Summary of the Invention

[0005] The purpose of this invention is to provide an extrusion device for feed processing in order to solve the above-mentioned problems and overcome the defects of the prior art, as detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an extrusion device for feed processing, comprising a housing, an interior cavity with a hopper connected to it, a screw rotatably connected through the inner wall of the cavity, a gearbox on the right side of the housing with its output end connected to the right end of the screw, an extrusion tube connected to the left end of the cavity, multiple heaters on the outer wall of the cavity, a mounting shaft rotatably connected through the left outer wall of the housing with three cutters mounted on it, and a filter screen installed on the inner wall of the cavity; it also includes an extrusion assembly for extruding dispersed feed after kneading; a cutter changing assembly for periodically changing the cutters; and a grinding assembly for grinding the cutters; the extrusion assembly includes a rotating shaft connected to the left end of the screw, an outer perforated plate rotatably connected to the left end of the extrusion tube, the right side of the outer perforated plate being connected to the left end of the rotating shaft, and a kneading cylinder connected to the inner wall of the extrusion tube.

[0007] Preferably, the filter screen is located between the screw and the mixing cylinder, the inner wall of the filter screen is rotatably connected to the outer wall of the rotating shaft, and the outer wall of the rotating shaft is connected to two grinding blocks, both of which are in sliding contact with the right side of the filter screen.

[0008] Preferably, the kneading cylinder is provided with a plurality of through holes arranged in a circumferential array, the through holes of the kneading cylinder are configured with varying diameters, and the inner wall of the extrusion tube is configured with varying diameters.

[0009] Preferably, the outer perforated plate has a plurality of holes arranged in a circumferential array, and an inner perforated plate is rotatably connected to the inner wall of the outer perforated plate. The inner perforated plate is located between the extrusion tube and the outer perforated plate. The inner perforated plate has a plurality of holes arranged in a circumferential array, a plurality of holes numbered two, a plurality of holes numbered three, and a plurality of holes numbered four, respectively, located on one side of the plurality of holes numbered two, and a plurality of holes numbered four, respectively, located on the other side of the plurality of holes numbered two. A lever is connected to the outer wall of the inner perforated plate, and the lever is slidably connected to the inner wall of the outer perforated plate. A portion of the lever is located outside the outer perforated plate.

[0010] Preferably, an inner cylinder is rotatably connected to each of the multiple through holes of the blending cylinder, a first gear is connected to the outer wall of the rotating shaft, a second gear is connected to the outer wall of the inner cylinder, multiple second gears mesh with the first gear, and multiple blades are connected to the inner wall of the inner cylinder.

[0011] Preferably, the tool changing assembly includes a mounting bracket, which is mounted on the top inner wall of the housing. A reciprocating screw is rotatably connected between the bottom of the mounting bracket and the left outer wall of the housing. The left end of the reciprocating screw passes through the left outer wall of the housing and is connected to a No. 4 gear. A No. 3 gear is connected to the outer wall of the outer bore plate, and the No. 3 gear meshes with the No. 4 gear. A ball bearing slider is slidably connected to the bottom of the mounting bracket. A reciprocating thread groove is provided on the reciprocating screw. The inner wall of the ball bearing slider is slidably connected to the reciprocating thread groove of the reciprocating screw through balls. A roller is connected to the outer wall of the ball bearing slider. A driven shaft is connected to the right end of the mounting shaft. The outer wall of the driven shaft is circumferentially arranged with three first arc surface blocks and three second arc surface blocks, and the first and second arc surface blocks are all located on the movement trajectory of the roller.

[0012] Preferably, the grinding assembly includes a mounting base, which is installed on the left edge of the top surface of the housing. A gantry frame is slidably mounted on the mounting base. The gantry frame has two inner sides, and grinding blocks are connected to the two inner sides of the gantry frame by springs. A brush plate is connected to the rear side of the grinding blocks by springs. The two grinding blocks and the two brush plates are all located on the movement trajectory of the cutter.

[0013] Preferably, a grooved rod is slidably installed between the bottom of the mounting bracket and the left inner wall of the housing. The grooved rod passes through the left inner wall of the housing, and the left end of the grooved rod is connected to the gantry frame. A wave groove is provided on the grooved rod. A connecting rod is connected to the outer wall of the ball slider. A sliding shaft is connected to the end of the connecting rod away from the ball slider. The sliding shaft is slidably connected to the wave groove of the grooved rod.

[0014] Preferably, a liquid tank is installed on the top of the housing, an air bladder is installed on the left inner wall of the housing, the air bladder is located on the movement trajectory of the ball slider, an air pipe is connected between the air bladder and the liquid tank, a liquid pipe is installed on the liquid tank, two nozzles are connected to the liquid pipe, a nozzle is provided at the end of the nozzle away from the liquid pipe, and the nozzles of the two nozzles are respectively located in front of the two grinding blocks.

[0015] The beneficial effects are: 1. This feed processing extrusion device, through the setting of the extrusion component, enables the kneading cylinder to knead the feed that has just passed through the filter screen, avoiding the material from becoming loose. This helps to improve the forming rate and forming quality of the feed, resulting in a higher appearance quality and better texture of the expanded feed product, and reducing the breakage rate. Through the cooperation of the outer and inner perforated discs, the inner perforated disc can achieve the processing effect of three different particle sizes. The operator can adjust it according to the processing needs. The adjustment operation is convenient and quick, with minimal impact on the production progress.

[0016] 2. The extrusion device for feed processing, through the setting of the blade changing component, enables the three cutters to switch at regular intervals, so that the three cutters take turns to perform cutting operations, avoiding overheating caused by prolonged use of the same cutter, which would affect the cutting effect, and also avoiding shortening the replacement cycle due to prolonged wear of the cutters.

[0017] 3. This feed processing extrusion device, through the setting of the grinding component, enables two grinding blocks to grind the cutting blade that is about to be cut, maintaining the sharpness of the cutting blade and preventing uneven feed surface caused by reduced blade sharpness; through the setting of two spray pipes, the two spray pipes can spray dry lubricant onto the cutting blade that is about to be cut, thereby reducing the friction on the cutting blade surface, further improving the cutting effect, and reducing the adhesion of impurities. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the appearance of the present invention; Figure 2 This is a schematic diagram of the shell structure of the present invention; Figure 3 This is a schematic diagram of the screw structure of the present invention; Figure 4 This is a schematic diagram of the extrusion tube structure of the present invention; Figure 5 This is a schematic diagram of the extrusion component structure of the present invention; Figure 6 This is a schematic diagram of the kneading cylinder structure of the present invention; Figure 7 This is a schematic diagram of the external hole disk structure of the present invention; Figure 8 This is a schematic diagram of the internal hole disk structure of the present invention; Figure 9 This is a schematic diagram of the tool changing assembly structure of the present invention; Figure 10 This is a schematic diagram of the ball slider structure of the present invention; Figure 11 This is a schematic diagram of the driven shaft structure of the present invention; Figure 12 This is a schematic diagram of the grinding component structure of the present invention; Figure 13 This is a schematic diagram of the portal frame structure of the present invention; Figure 14 This is a schematic diagram of the grinding block structure of the present invention.

[0020] The reference numerals in the attached drawings are explained as follows: 1. Shell; 2. Cavity; 3. Hopper; 4. Gearbox; 5. Screw; 6. Extrusion tube; 7. Extrusion assembly; 71. Rotary shaft; 72. Outer bore plate; 721. Hole No. 1; 73. Inner bore plate; 731. Hole No. 2; 732. Hole No. 3; 733. Hole No. 4; 74. Pulley; 75. Mixing cylinder; 76. Inner cylinder; 77. Gear No. 1; 78. Gear No. 2; 79. Blade; 8. Tool changing assembly; 81. Gear No. 3; 82. Reciprocating lead screw; 83. Gear No. 4; 84. Mounting bracket; 85. Ball bearing slider; 86. Roller; 87. Driven shaft; 88. First arc surface block; 89. Second arc surface block; 9. Grinding assembly; 91. Mounting base; 92. Portal frame; 93. Grinding block; 94. Groove rod; 95. Connecting rod; 96. Sliding shaft; 97. Brush plate; 98. Airbag; 99. Liquid tank; 910. Air pipe; 911. Liquid pipe; 912. Nozzle; 10. Mounting shaft; 11. Cutter; 12. Filter screen; 13. Grinding block. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] Example 1 Please see Figure 1 - Figure 8An extrusion device for feed processing includes a shell 1, an interior cavity 2, a hopper 3 connected to the cavity 2, a screw 5 rotatably connected through the inner wall of the cavity 2, a gearbox 4 located on the right side of the shell 1, the output end of the gearbox 4 connected to the right end of the screw 5, an extrusion tube 6 connected to the left end of the cavity 2, multiple heaters on the outer wall of the cavity 2, a mounting shaft 10 rotatably connected through the left outer wall of the shell 1, three cutters 11 mounted on the mounting shaft 10, and a filter screen 12 installed on the inner wall of the cavity 2. Feed enters the cavity 2 through the hopper 3, the gearbox 4 drives the screw 5 to rotate, the screw 5 mixes the feed in the cavity 2 and conveys it to the left by rotation, and the heaters outside the cavity 2 can be turned on to heat the cavity. 2. Heating is performed to heat the feed inside the cavity 2. The feed in the cavity 2 enters the extrusion tube 6 after being filtered by the filter screen 12. The system also includes an extrusion assembly 7 for extruding the dispersed feed. The extrusion assembly 7 includes a rotating shaft 71 connected to the left end of the screw 5. An outer perforated plate 72 is rotatably connected to the left end of the extrusion tube 6. The right side of the outer perforated plate 72 is connected to the left end of the rotating shaft 71. The outer perforated plate 72 extrudes the feed while simultaneously rotating it, causing the rotating feed to contact the cutter 11, which cuts the feed. Simultaneously, the feed contacts air and expands, forming extruded feed. Conventional rotating cutters tend to cause feed to splash during rotational cutting. This is addressed by the interaction between the outer perforated plate 72 and the cutter 11. The outer disc 72 rotates the feed, causing it to contact the cutter 11 and cut it. The cutter 11 uses friction with the feed to counteract most of the feed's inertia, allowing the cut feed to fall directly, avoiding the feed splattering that occurs with conventional rotating cutters. A mixing cylinder 75 is connected to the inner wall of the extrusion tube 6. Multiple through holes are arranged in a circumferential array on the mixing cylinder 75. These through holes have variable diameters, with the inner diameter on the left side of the variable diameter section being smaller than that on the right. Similarly, the inner wall of the extrusion tube 6 has a variable diameter, gradually narrowing to the left at the variable diameter section. Inner cylinders 76 are rotatably connected to the multiple through holes of the mixing cylinder 75. A gear 77 is connected to the outer wall of the rotating shaft 71, and a... Gear 78 (number 2) meshes with gear 77 (number 1). Multiple blades 79 are connected to the inner wall of the inner cylinder 76. Loose feed after passing through the filter screen 12 is first kneaded by the blades 79 within the inner cylinder 76, then extruded into larger units by the kneading cylinder 75. Finally, the extrusion tube 6 is pressed together at the diameter change point to form a single unit, improving the overall stability of the feed after subsequent puffing and preventing it from becoming loose and brittle. The extrusion assembly 7 allows the kneading cylinder 75 to knead the feed that has just passed through the filter screen 12, preventing the material from becoming loose. This helps improve the feed's forming rate and quality, resulting in a higher appearance and better texture in the expanded feed product, while reducing breakage.

[0023] Furthermore, the filter screen 12 is located between the screw 5 and the mixing cylinder 75. The inner wall of the filter screen 12 is rotatably connected to the outer wall of the rotating shaft 71. Two grinding blocks 13 are connected to the outer wall of the rotating shaft 71. Both grinding blocks 13 are in sliding contact with the right side of the filter screen 12. When the rotating shaft 71 rotates, it drives the two grinding blocks 13 to rotate. The two grinding blocks 13 crush the larger particles on the right side of the filter screen 12 that cannot pass through the filter screen 12, thus preventing the filter screen 12 from becoming clogged.

[0024] Furthermore, the outer perforated disk 72 has a circumferential array of multiple holes 721. An inner perforated disk 73 is rotatably connected to the inner wall of the outer perforated disk 72, located between the extrusion tube 6 and the outer perforated disk 72. The inner perforated disk 73 has a circumferential array of multiple holes 731, multiple holes 732, and multiple holes 733. The multiple holes 732 are located on one side of the multiple holes 731, and the multiple holes 733 are located on the other side of the multiple holes 731. The inner diameter of the holes 721 is equal to that of the holes 731, the inner diameter of the holes 731 is larger than that of the holes 732, and the inner diameter of the holes 732 is larger than that of the holes 733. A lever 74 is connected to the outer wall of the inner perforated disk 73, and the lever 74 is slidably connected to the inner wall of the outer perforated disk 72. A portion of the lever 74 is located outside the outer perforated disk 72, requiring switching processing. When adjusting the particle size, the lever 74 is moved, causing the inner disc 73 to rotate. This causes multiple No. 3 holes 732 to overlap with multiple No. 1 holes 721. The feed is first extruded through the smaller No. 3 holes 732 and then through the No. 1 holes 721, thus reducing the diameter of the extruded feed and consequently reducing the size of the expanded particles. Similarly, by using the lever 74 to overlap multiple No. 4 holes 733 with No. 1 holes 721, even smaller particle sizes can be processed. This allows the operator to flexibly adjust the angle of the inner disc 73 according to the processing requirements of different particle sizes, enabling the processing of feed with different particle sizes. Through the cooperation of the outer disc 72 and the inner disc 73, the inner disc 73 can achieve the processing effect of three different particle sizes. The operator can adjust it according to the processing requirements. The adjustment operation is convenient and time-saving, with minimal impact on the production progress.

[0025] In addition, please see Figure 4 , Figure 9 - Figure 11The blade changing assembly 8 is used for timed replacement of the cutting blade 11. The blade changing assembly 8 includes a mounting bracket 84, which is mounted on the top inner wall of the housing 1. A reciprocating screw 82 is rotatably connected between the bottom of the mounting bracket 84 and the left outer wall of the housing 1. The left end of the reciprocating screw 82 passes through the left outer wall of the housing 1 and is connected to a fourth gear 83. A third gear 81 is connected to the outer wall of the outer bore plate 72, and the third gear 81 meshes with the fourth gear 83. The bottom of the mounting bracket 84 is slidably connected to... The ball slider 85 has a reciprocating threaded groove on the reciprocating screw 82. The inner wall of the ball slider 85 is slidably connected to the reciprocating threaded groove of the reciprocating screw 82 through the balls. When the reciprocating screw 82 rotates, it can drive the ball slider 85 to slide back and forth at the bottom of the mounting frame 84 through the cooperation of the reciprocating threaded groove and the balls. The outer wall of the ball slider 85 is connected to a roller 86. When the ball slider 85 moves, it drives the roller 86 to move synchronously. The right end of the mounting shaft 10 is connected to a driven shaft 87. The outer wall of the driven shaft 87 is round. The circumferential array is equipped with three first arc-shaped blocks 88 and three second arc-shaped blocks 89. The first and second arc-shaped blocks 88 and 89 are both located on the movement trajectory of the roller 86. Each reciprocating motion of the roller 86 can drive the driven shaft 87 to rotate 120 degrees through contact with one of the first arc-shaped blocks 88 and one of the second arc-shaped blocks 89. When the roller 86 contacts the first arc-shaped block 88, the angle of rotation of the driven shaft 87 is greater than the angle of rotation of the driven shaft 87 when the roller 86 contacts the second arc-shaped block 89. When the driven shaft 87 rotates, it drives the three cutters 11 to rotate through the mounting shaft 10, so that the three cutters 11 move to the left side of the outer hole disk 72 in turn to perform cutting operations, achieving the effect of timed switching of the cutters 11. Through the setting of the cutter changing component 8, the three cutters 11 can be switched in time, so that the three cutters 11 take turns to perform cutting operations, avoiding the situation of overheating caused by prolonged use of the same cutter 11, which would affect the cutting effect, and also avoiding shortening the replacement cycle due to prolonged wear of the cutter 11.

[0026] It is worth noting that, please refer to Figure 4 , Figure 12 - Figure 14A grinding assembly 9 is used to grind the cutter 11. The grinding assembly 9 includes a mounting base 91, which is installed on the left edge of the top surface of the housing 1. A gantry frame 92 is slidably mounted on the mounting base 91. The gantry frame 92 has two inner sides, and grinding blocks 93 are connected to the two inner sides of the gantry frame 92 by springs. Brush plates 97 are connected to the rear side of the grinding blocks 93 by springs. The two grinding blocks 93 and the two brush plates 97 are all located on the movement trajectory of the cutter 11. As the cutter 11 rotates from the rear to the top, the cutter 11 first contacts the two brush plates 97, so that the brush plates 97 remove the impurities attached to the surface of the cutter 11. Then the cutter 11 moves between the two grinding blocks 93, and the two grinding blocks 93 maintain pressure on both sides of the cutter 11 by the elastic force of the springs. A grooved rod 94 is slidably mounted between the bottom of the mounting bracket 84 and the left inner wall of the housing 1. The groove rod 94 penetrates the left inner wall of the housing 1. The left end of the groove rod 94 is connected to the gantry frame 92. The groove rod 94 is provided with a wave groove. The outer wall of the ball slider 85 is connected to a connecting rod 95. The end of the connecting rod 95 away from the ball slider 85 is connected to a sliding shaft 96. The sliding shaft 96 is slidably connected to the wave groove of the groove rod 94. When the sliding shaft 96 moves, it drives the groove rod 94 to move up and down reciprocally through the wave groove. This causes the groove rod 94 to drive the two grinding blocks 93 to move up and down reciprocally through the gantry frame 92. The two grinding blocks 93 grind the cutter 11 through the up and down reciprocating movement, thereby maintaining the sharpness of the cutter 11. Through the setting of the grinding component 9, the two grinding blocks 93 can grind the cutter 11 that is about to be cut, maintain the sharpness of the cutter 11, and avoid uneven surface of the cut feed due to the reduction of the sharpness of the cutter 11.

[0027] It is worth noting that a liquid tank 99 is installed on the top of the housing 1, and the liquid tank 99 contains dry lubricant. An air bladder 98 is installed on the inner left side of the housing 1. The air bladder 98 is located on the movement trajectory of the ball slider 85. When the ball slider 85 is about to move to the leftmost position, it contacts the air bladder 98 and squeezes the air bladder 98. An air pipe 910 is connected between the air bladder 98 and the liquid tank 99. A liquid pipe 911 is installed on the liquid tank 99. Two nozzles 912 are connected to the liquid pipe 911. A nozzle is provided at the end of the nozzle 912 away from the liquid pipe 911. The nozzles of the two nozzles 912 are located in front of the two grinding blocks 93 respectively. The cutter 11 passes through the two nozzles. When the nozzles of pipe 912 are connected, the two nozzles 912 spray dry lubricant onto both sides of the cutter 11 through the two nozzles, so that a layer of dry lubricant adheres to the surface of the cutter 11. The dry lubricant can form an isolation layer on the surface of the cutter 11, reducing the probability of impurities adhering to the surface during the cutting operation, and preventing a large amount of impurities from adhering to the surface of the cutter 11 after long-term use, which would affect the cutting operation. By setting up two nozzles 912, the two nozzles 912 can spray dry lubricant onto the cutter 11 that is about to be cut, thereby reducing the friction on the surface of the cutter 11, further improving the cutting effect, and reducing the adhesion of impurities.

[0028] Using the above structure, the working principle of this case is as follows: feed enters the cavity 2 from the hopper 3; the gearbox 4 drives the screw 5 to rotate; the screw 5 mixes the feed in the cavity 2 and conveys it to the left through rotation; the heater outside the cavity 2 heats the cavity 2, thereby heating the feed inside; the feed in the cavity 2 enters the extrusion tube 6 after being filtered by the filter screen 12; when the screw 5 rotates, it drives the rotating shaft 71 to rotate; when the rotating shaft 71 rotates, it drives the two grinding blocks 13 to rotate; the two grinding blocks 13 crush the larger particles on the right side of the filter screen 12 that have not passed through the filter screen 12, preventing the filter screen 12 from clogging; When shaft 71 rotates, it drives outer bore disk 72 to rotate, and outer bore disk 72 drives inner bore disk 73 to rotate synchronously. Multiple second holes 731 of inner bore disk 73 overlap with multiple first holes 721 of outer bore disk 72. The feed in extrusion tube 6 is extruded through the second holes 731 and first holes 721. Due to the continuous rotation of outer bore disk 72 and inner bore disk 73, the extruded feed, while rotating, comes into contact with cutter 11, causing cutter 11 to cut the feed. Simultaneously, the feed comes into contact with air and expands, forming puffed feed. Conventional rotating cutters easily cause the cut feed to splash during rotational cutting. The outer disc 72 and the cutter 11 work together to rotate the feed and bring it into contact with the cutter 11, thus cutting it. The cutter 11 uses friction with the feed to counteract most of the feed's inertia, causing the cut feed to fall directly, avoiding the feed splattering that occurs with conventional rotating cutters. The inner diameter of hole 721 is equal to that of hole 731, the inner diameter of hole 731 is larger than that of hole 732, and the inner diameter of hole 732 is larger than that of hole 733. When switching the processing particle size, the lever 74 is moved, causing the inner disc 73 to rotate, allowing multiple... Each of the No. 3 holes 732 overlaps with multiple No. 1 holes 721. At this time, No. 2 holes 731 and No. 4 holes 733 cannot discharge material due to the obstruction of the outer hole disk 72. This causes the feed to be extruded through the smaller inner diameter No. 3 holes 732 and then through the No. 1 holes 721, thereby reducing the diameter of the extruded feed and the size of the expanded particles. Similarly, after the operator uses the lever 74 to make multiple No. 4 holes 733 overlap with No. 1 holes 721, smaller particle sizes of feed can be processed. This allows the operator to flexibly adjust the angle of the inner hole disk 73 according to the processing requirements of different particle sizes, so as to process feed of different particle sizes.The filtered feed enters multiple through holes in the mixing cylinder 75, and then flows into the inner cylinder 76. When the rotating shaft 71 rotates, it drives the first gear 77 to rotate. The first gear 77, through multiple second gears 78, drives multiple inner cylinders 76 to rotate. The blades 79 inside the inner cylinder 76 rotate synchronously with it. The rotation of the blades 79 in the inner cylinder 76 helps to mix the flowing feed, binding the loose feed into a cohesive whole. The diameter change point in the through holes of the mixing cylinder 75 is located on the left side of the inner cylinder 76. When the feed, after being mixed in the inner cylinder 76, passes through the diameter change point of the through hole, the inner diameter on the left side of the diameter change point is smaller than that on the right side, causing the feed to be squeezed as it flows to the left, further promoting the mixing effect. After being squeezed, the feed flowing out through the multiple through holes moves to the diameter change point of the extrusion pipe 6. The diameter change point of the extrusion pipe 6 gradually narrows to the left, causing the feed flowing out of the multiple through holes to be squeezed again. After the above steps, the loose feed after passing through the filter screen 12 is first kneaded by the blades 79 inside multiple inner cylinders 76, and then extruded into multiple larger wholes by the kneading cylinder 75. Finally, they are pressed together at the diameter change point of the extrusion pipe 6 to form a whole, which improves the overall stability of the feed after subsequent puffing and molding, and avoids the occurrence of loose and brittle materials. The setting of the extrusion component 7 enables the kneading cylinder 75 to knead the feed that has just passed through the filter screen 12, preventing the material from becoming loose, which helps to improve the forming rate and forming quality of the feed, resulting in a higher appearance quality and better texture of the expanded feed product, and reducing the breakage rate. Through the cooperation of the outer perforated plate 72 and the inner perforated plate 73, the inner perforated plate 73 can achieve the processing effect of three different particle sizes. The operator can adjust it according to the processing needs. The adjustment operation is convenient and quick, with little impact on the production progress.

[0029] When the outer disc 72 rotates, it drives the fourth gear 83 to rotate via the third gear 81. The fourth gear 83 then drives the reciprocating screw 82 to rotate. When the reciprocating screw 82 rotates, it drives the ball slider 85 to slide back and forth at the bottom of the mounting bracket 84 through the cooperation of the reciprocating thread groove and the ball. When the ball slider 85 moves, it drives the roller 86 to move synchronously. When the roller 86 moves to the left and is about to reach the leftmost position, the roller 86 contacts the arc surface of one of the first arc surface blocks 88, causing the roller 86 to drive the driven shaft 87 to rotate along the arc surface of the first arc surface block 88. When the roller 86 moves to the left and reaches its left position, the roller 86 abuts between the two first arc surface blocks 88, and the driven shaft 87 stops rotating. Then the roller 86 moves to the right and contacts one of the second arc surface blocks 89. During the rightward movement, the roller 86 drives the driven shaft 87 to rotate again through the arc surface of the second arc surface block 89, and then the roller 86 disengages from the second arc surface block. When the roller 86 moves to the left, it contacts the next first arc surface block 88. Each reciprocating motion of the roller 86 drives the driven shaft 87 to rotate 120 degrees through contact with one of the first arc surface blocks 88 and one of the second arc surface blocks 89. When the roller 86 contacts the first arc surface block 88, the angle of rotation of the driven shaft 87 is greater than the angle of rotation of the driven shaft 87 when the roller 86 contacts the second arc surface block 89. When the driven shaft 87 rotates, it drives the three cutters 11 to rotate through the mounting shaft 10, so that the three cutters 11 move to the left side of the outer hole disk 72 in turn to perform cutting operations, achieving the effect of timed switching of the cutters 11. Through the setting of the cutter changing assembly 8, the three cutters 11 can be switched in time, so that the three cutters 11 take turns to perform cutting operations, avoiding the situation of overheating caused by prolonged use of the same cutter 11, which would affect the cutting effect. It also avoids shortening the replacement cycle due to prolonged wear of the cutter 11.

[0030] As the cutter 11 rotates from the rear to the top, it first contacts the two brush plates 97, causing them to remove impurities from its surface. Then, the cutter 11 moves between the two grinding blocks 93. The two grinding blocks 93 maintain pressure on both sides of the cutter 11 using spring force. During its movement, the ball bearing slider 85 drives the sliding shaft 96 to move synchronously via the connecting rod 95. As the sliding shaft 96 moves, it slides within the corrugated groove of the grooved rod 94, causing the sliding shaft 96 to drive the grooved rod 94 to reciprocate up and down through the corrugated groove. Rod 94 drives the gantry frame 92 to slide up and down on the mounting base 91. The gantry frame 92, through a spring, drives two grinding blocks 93 to move up and down, so that the two grinding blocks 93 grind the cutter 11 by moving up and down, thereby maintaining the sharpness of the cutter 11. The liquid tank 99 is filled with dry lubricant. When the ball bearing slider 85 is about to move to the leftmost position, it contacts the air bag 98 and squeezes the air bag 98. At this time, the three cutters 11 begin to rotate. The cutter 11 that has just been ground is about to move to the left side of the outer hole plate 72 to perform cutting. During this process, the airbag 98 introduces air into the liquid tank 99 through the air pipe 910. The liquid tank 99 then delivers dry lubricant to two nozzles 912 through the liquid pipe 911. At this time, the cutter 11 passes between the nozzles of the two nozzles 912. The two nozzles 912 spray dry lubricant onto both sides of the cutter 11 through their respective nozzles, causing a layer of dry lubricant to adhere to the surface of the cutter 11. The dry lubricant can form an insulating layer on the surface of the cutter 11, reducing the probability of impurities adhering to the surface during cutting operations and preventing the cutter 11 from being used for extended periods. After use, a large amount of impurities adhere to the surface, affecting the cutting operation. The setting of the grinding component 9 enables the two grinding blocks 93 to grind the cutter 11 that is about to be cut, maintaining the sharpness of the cutter 11 and preventing the feed surface from becoming uneven due to the reduced sharpness of the cutter 11. The setting of the two spray pipes 912 enables the two spray pipes 912 to spray dry lubricant onto the cutter 11 that is about to be cut, thereby reducing the friction on the surface of the cutter 11, further improving the cutting effect and reducing the adhesion of impurities.

[0031] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A bulking device for feed processing comprising a housing (1), characterized in that: The housing (1) has a cavity (2) installed inside, and a hopper (3) is connected to the cavity (2). A screw (5) is rotatably connected through the inner wall of the cavity (2). A gearbox (4) is provided on the right side of the housing (1). The output end of the gearbox (4) is connected to the right end of the screw (5). An extrusion tube (6) is connected to the left end of the cavity (2). Multiple heaters are provided on the outer wall of the cavity (2). An installation shaft (10) is rotatably connected through the left outer wall of the housing (1). Three cutters (11) are installed on the installation shaft (10). A filter screen (12) is installed on the inner wall of the cavity (2). It also includes an extrusion assembly (7) for extruding dispersed feed after mixing; A blade changing assembly (8) is used to periodically change the cutting blade (11). Grinding component (9) for grinding the cutting blade (11); The extrusion assembly (7) includes a rotating shaft (71) connected to the left end of the screw (5), and an outer hole disk (72) rotatably connected to the left end of the extrusion tube (6). The right side of the outer hole disk (72) is connected to the left end of the rotating shaft (71), and a kneading cylinder (75) is connected to the inner wall of the extrusion tube (6). The filter screen (12) is located between the screw (5) and the mixing cylinder (75). The inner wall of the filter screen (12) is rotatably connected to the outer wall of the rotating shaft (71). The outer wall of the rotating shaft (71) is connected to two grinding blocks (13). Both grinding blocks (13) are in sliding contact with the right side of the filter screen (12). The kneading cylinder (75) is provided with a plurality of through holes arranged in a circumferential array. The through holes of the kneading cylinder (75) are configured with variable diameters, and the inner wall of the extrusion tube (6) is configured with variable diameters. The outer hole disk (72) is provided with a plurality of holes No. 1 (721) arranged in a circular array. The inner wall of the outer hole disk (72) is rotatably connected to an inner hole disk (73). The inner hole disk (73) is located between the extrusion tube (6) and the outer hole disk (72). The inner hole disk (73) is provided with a plurality of holes No. 2 (731), a plurality of holes No. 3 (732) and a plurality of holes No. 4 (733) arranged in a circular array. The holes No. 3 (732) are located on one side of the holes No. 2 (731), and the holes No. 4 (733) are located on the other side of the holes No. 2 (731). The outer wall of the inner hole disk (73) is connected to a lever (74). The lever (74) is slidably connected to the inner wall of the outer hole disk (72). A part of the lever (74) is located outside the outer hole disk (72). The inner cylinder (76) is rotatably connected to the multiple through holes of the blending cylinder (75). A first gear (77) is connected to the outer wall of the rotating shaft (71), and a second gear (78) is connected to the outer wall of the inner cylinder (76). Multiple second gears (78) mesh with the first gear (77). Multiple blades (79) are connected to the inner wall of the inner cylinder (76).

2. The bulking device for feed processing according to claim 1, characterized in that: The tool changing assembly (8) includes a mounting bracket (84), which is mounted on the top inner wall of the housing (1). A reciprocating screw (82) is rotatably connected between the bottom of the mounting bracket (84) and the left outer wall of the housing (1). The left end of the reciprocating screw (82) penetrates the left outer wall of the housing (1), and a fourth gear (83) is connected to the left end of the reciprocating screw (82). A third gear (81) is connected to the outer wall of the outer bore plate (72), and the third gear (81) meshes with the fourth gear (83). The bottom of the mounting bracket (84) is slidably connected to... A ball-bearing slider (85) is connected to the reciprocating screw (82), which is provided with a reciprocating thread groove. The inner wall of the ball-bearing slider (85) is slidably connected to the reciprocating thread groove of the reciprocating screw (82) through the balls. A roller (86) is connected to the outer wall of the ball-bearing slider (85). A driven shaft (87) is connected to the right end of the mounting shaft (10). The outer wall of the driven shaft (87) is arranged with three first arc surface blocks (88) and three second arc surface blocks (89) in a circumferential array. The first arc surface blocks (88) and the second arc surface blocks (89) are both located on the movement trajectory of the roller (86).

3. A bulking device for feed processing according to claim 2, characterized in that: The polishing assembly (9) includes a mounting base (91) which is mounted on the left edge of the top surface of the housing (1). A gantry frame (92) is slidably mounted on the mounting base (91). The gantry frame (92) has two inner sides. The two inner sides of the gantry frame (92) are respectively connected to polishing blocks (93) by springs. The rear side of the polishing blocks (93) is connected to a brush plate (97) by springs. The two polishing blocks (93) and the two brush plates (97) are all located on the movement trajectory of the cutter (11).

4. The bulking device for feed processing according to claim 3, wherein: A grooved rod (94) is slidably installed between the bottom of the mounting bracket (84) and the left inner wall of the housing (1). The grooved rod (94) penetrates the left inner wall of the housing (1). The left end of the grooved rod (94) is connected to the gantry frame (92). A wave groove is provided on the grooved rod (94). A connecting rod (95) is connected to the outer wall of the ball slider (85). A sliding shaft (96) is connected to the end of the connecting rod (95) away from the ball slider (85). The sliding shaft (96) is slidably connected to the wave groove of the grooved rod (94).

5. A feed processing bulking device according to claim 4, wherein: A liquid tank (99) is installed on the top of the housing (1), and an air bladder (98) is installed on the left inner wall of the housing (1). The air bladder (98) is located on the movement trajectory of the ball slider (85). An air pipe (910) is connected between the air bladder (98) and the liquid tank (99). A liquid pipe (911) is installed on the liquid tank (99). Two nozzles (912) are connected to the liquid pipe (911). A nozzle is provided at the end of the nozzle (912) away from the liquid pipe (911). The nozzles of the two nozzles (912) are respectively located in front of the two grinding blocks (93).

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