Premixing device for feed production
By leveraging the power transmission of the airlock-linked anti-blocking and dust suppression mechanism and the linkage of the active air intake component, the problems of powder bridge blockage and dust diffusion in premixed material production equipment are solved, achieving smooth material feeding and effective dust control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUNAN HUAYOU BIOTECHNOLOGY CO LTD
- Filing Date
- 2026-05-15
- Publication Date
- 2026-06-12
Smart Images
Figure CN122186457A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of feed processing machinery and equipment technology, specifically to a premixed feed production improvement device. Background Technology
[0002] Premixed feed is an intermediate product made by pre-mixing various trace vitamins, amino acids, trace elements and minerals, drug additives, and carrier powders required for animal growth according to a formula ratio. After thorough mixing, the premixed feed must be weighed, packaged, and sealed into standard packages. These packages are then safely transferred to the main feed processing line for secondary large-scale mixing with bulk grain raw materials such as corn flour and soybean meal, and finally pressed into finished feed products. Because the trace components in premixed feed are mostly in an extremely fine powder physical form, they possess complex physical characteristics such as low bulk density, strong intermolecular adsorption, easy absorption of moisture from the air leading to adhesion, and extremely poor fluidity. In existing conventional premixed feed production line layouts, after the mixer completes the mixing process, the material usually falls freely downwards under its own gravity into a conical hopper used as a buffer for temporary storage. A packaging scale system installed at the bottom of the hopper then performs the grabbing and weighing action.
[0003] When the gate at the bottom of the mixer opens, the heavier powder material, like a giant solid plunger, is instantly plunged into the narrow buffer chamber of the packaging scale below under the acceleration of gravity. This violent physical process generates complex aerodynamic effects: the falling material plunger violently compresses the original still air in the buffer chamber below. The compressed air cannot find enough outlet within the sealed metal chamber walls, thus creating an upward counter-current airflow. This reverse airflow not only slows down the normal falling speed of the material, but also carries a large amount of trace additives and extremely fine dust, which diffuses into the workshop environment in a jet-like manner from the tiny gaps in the equipment flanges or the openings of the packaging bags below.
[0004] Current methods simply involve attaching a passive, breathable filter bag to the top of the silo. This passive venting method is often slow to respond to sudden high-pressure airflow peaks, and the filter bag's pores become clogged with high-concentration dust within seconds, losing its venting function. Simultaneously, subjected to the combined forces of upward airflow and downward compaction by the material's own gravity, the poorly rheological premixed powder adheres tightly to the conical inner wall of the upper buffer silo, undergoing frictional self-locking and rapidly forming a robust powder bridge above the discharge port, cutting off the material flow path. Existing equipment commonly uses external electrically controlled pneumatic hammers for high-frequency striking to address the blockage problem. However, the entire electrical control loop—from the level sensor's signal detection and feedback to the control center's processing and the final issuance of the solenoid valve opening command—involves an unavoidable time delay. This causes the hammer's striking action to lag behind the moment the powder arches, and lacks mechanical coordination with the material flow action, thus only addressing the symptoms, not the root cause. Summary of the Invention
[0005] To address the aforementioned problems, this invention proposes a premixed feed production improvement device, comprising a mixer buffer hopper, a baling scale buffer hopper, and a screw conveyor double-hopper baling scale. A pneumatic gate is connected between the bottom discharge end of the mixer buffer hopper and the feed end of the baling scale buffer hopper. The device also includes an airlock-linked anti-blocking and dust suppression mechanism, which comprises a power transmission component, an arch-breaking component, and an active suction component. The power transmission component is mechanically connected to the horizontal moving parts of the pneumatic gate. The arch-breaking component is installed in the lower internal region of the mixer buffer hopper, and the active suction component is installed in the upper internal region of the baling scale buffer hopper. When the pneumatic gate opens outward, the power transmission component receives horizontal kinetic energy and synchronously drives the arch-breaking component to move vertically downward. Simultaneously, the power transmission component synchronously drives the internal structure of the active suction component to move vertically downward to generate a negative pressure suction space.
[0006] Furthermore, the pneumatic gate includes a fixed outer frame, a horizontal sliding plate, and a drive cylinder. The output end of the drive cylinder is fixedly connected to the horizontal sliding plate. The power transmission assembly also includes a horizontal rack fixed to the side of the horizontal sliding plate, a reversing gear installed on the outside of the fixed outer frame, and a vertically arranged lifting rack push rod. The horizontal rack meshes with the lower teeth of the reversing gear, and the lifting rack push rod meshes with the side teeth of the reversing gear.
[0007] Furthermore, the power transmission assembly also includes a Z-shaped rigid connecting arm, the top of which extends to the outer wall of the mixer buffer hopper. One end of the Z-shaped rigid connecting arm is fixed to the lifting rack push rod, and the other end of the Z-shaped rigid connecting arm penetrates the outer wall of the mixer buffer hopper and extends into the mixer buffer hopper.
[0008] Furthermore, the arch-breaking assembly includes a vertical central slide bar and a cross-shaped arch-breaking cutter fixed around the vertical central slide bar. The top of the vertical central slide bar is fixedly connected to one end of the Z-shaped rigid connecting arm extending inward. The four blade ends of the cross-shaped arch-breaking cutter are kept parallel to the conical inner wall inside the mixer buffer hopper with a gap.
[0009] Furthermore, the active suction assembly includes a cylindrical suction chamber fixed inside the buffer hopper of the packing scale and a circular suction piston installed inside the cylindrical suction chamber. The bottom end of the vertical central slide rod extends downward through the top cover plate of the cylindrical suction chamber and is fixedly connected to the center position of the circular suction piston.
[0010] Furthermore, the circular suction piston is a solid circular stainless steel disc. The outer edge dimension of the circular suction piston is matched with the inner diameter dimension of the cylindrical suction chamber, and the outer edge of the circular suction piston and the inner cylindrical wall of the cylindrical suction chamber form a sliding contact state.
[0011] Furthermore, the bottom of the cylindrical intake chamber is open, and the bottom edge of the cylindrical intake chamber is wrapped with an annular needle-punched nylon filter belt.
[0012] Furthermore, an exhaust vent is provided on the top cover of the cylindrical intake chamber, and a one-way exhaust pressure relief valve is installed on the exhaust vent, which only allows gas to be discharged from inside the cylindrical intake chamber to the external environment.
[0013] Furthermore, the bottom discharge end of the mixer buffer hopper is a dual-outlet type, with two independent pneumatic gates connected to the bottom discharge end of the mixer buffer hopper. The two pneumatic gates converge and connect to the feed end of a packing scale buffer hopper. Each pneumatic gate is independently equipped with a set of airlock linkage anti-blocking and dust suppression mechanism.
[0014] Furthermore, the feed inlet of the auger double-bucket packaging scale is connected to an exhaust pipe, the other end of which is connected to an external pulse dust collector. A sewing conveyor is installed on the ground below the auger double-bucket packaging scale.
[0015] The beneficial effects of this invention are as follows: 1. When the equipment issues a discharge command and the horizontal sliding plate of the pneumatic gate is pulled outward by the cylinder to open, this horizontal linear kinetic energy is converted into vertically downward linear motion by the horizontal rack and reversing gear in the power transmission assembly. The cross-shaped arch-breaking cutter fixed inside the mixer buffer hopper cuts downward synchronously with the vertical central slide rod. Because the four blades of the cross-shaped arch-breaking cutter are parallel to the conical inner wall, in the extremely short physical instant when the powder just loses its support from below and is about to establish an internal stress arch on the hopper wall through friction, it uses rigid metal blades to tear the friction network of the powder from the inside, forcing the powder to collapse downward with the cutter holder, effectively preventing the formation of arching.
[0016] 2. The downward linear mechanical force simultaneously pulls the circular suction piston, fixed inside the buffer hopper of the packing scale, downwards. The outer edge of the circular suction piston slides against the inner cylindrical wall of the cylindrical suction chamber, forming a variable-volume, sealed cylindrical cylinder. After the piston opens with the horizontal sliding plate, the volume inside the cylindrical suction chamber above the piston expands, creating a negative pressure in this area. This mechanically driven negative pressure suction force precisely counteracts the positive pressure expelled by the falling powder at the right time and spatial position. The dust-laden air displaced below, pushed by the positive pressure and drawn in by the negative pressure above, changes its trajectory from escaping into the gaps outside the equipment. Instead, it passes through the annular needle-punched nylon filter belt at the bottom and is continuously drawn into the cylindrical suction chamber, effectively cutting off the leakage path of trace additive dust. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the airlock linkage anti-blocking and dust suppression mechanism in this invention.
[0018] The following are explanations of the reference numerals in the attached drawings: 1. Mixer buffer hopper; 2. Pneumatic gate; 21. Fixed outer frame; 22. Horizontal sliding plate; 23. Drive cylinder; 3. Packaging scale buffer hopper; 4. Screw double hopper packaging scale; 5. Airlock linkage anti-blocking and dust suppression mechanism; 51. Horizontal rack; 52. Reversing gear; 53. Lifting rack push rod; 54. Z-shaped rigid connecting arm; 55. Vertical center slide bar; 56. Cross-shaped arch-breaking cutter; 57. Cylindrical suction chamber; 58. Circular suction piston; 59. Annular needle-punched nylon filter belt; 510. One-way exhaust pressure relief valve; 6. Pulse dust collector assembly; 7. Sewing bag conveyor. Detailed Implementation
[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0021] The present invention will be further described below with reference to the accompanying drawings: Example 1 A premix improvement device for feed production, such as Figure 1 and Figure 2 As shown, the main frame of the equipment, from top to bottom, consists of a mixer buffer hopper 1, a pneumatic gate 2, a packing scale buffer hopper 3, and a bottom auger double-hopper packing scale 4 connected in series. The mixer buffer hopper 1 is made of 3mm thick stainless steel and has a volume of 3 cubic meters. To alleviate the central compressive stress of the material at the discharge outlet, the bottom discharge end of the mixer buffer hopper 1 is customized with a double outlet, meaning the bottom conical end branches into two short discharge pipes. At the end flanges of these two short discharge pipes, a stainless steel pneumatic gate 2 (model TZMQ40×40) is bolted on. The discharge ports of the two pneumatic gates 2 converge and connect to the top feed end of the 2-cubic-meter packing scale buffer hopper 3.
[0022] Example 2 Based on the above embodiment one, as follows Figure 1 and Figure 2As shown, an airlock-linked anti-blocking and dust suppression mechanism 5 is set as the power transmission component. The pneumatic gate 2 consists of a fixed outer frame 21, a horizontal sliding plate 22, and a drive cylinder 23. The piston rod end of the drive cylinder 23 is threadedly connected to the end face of the horizontal sliding plate 22. On the side of the horizontal sliding plate 22, a horizontal rack 51 with strong teeth is fixed by welding. On the outer wall of the fixed outer frame 21 of the pneumatic gate 2, a reversing gear 52 is rotatably installed via a bearing-bearing pivot pin. The upper tooth surface of the horizontal rack 51 and the lower half of the teeth of the reversing gear 52 are always meshed. On one side of the reversing gear 52, a fixed seat with a slide rail is vertically installed, and a vertically arranged lifting rack push rod 53 is embedded inside the slide rail. The teeth on the surface of the lifting rack push rod 53 mesh with the side teeth of the reversing gear 52. The top of the lifting rack push rod 53 is connected to a Z-shaped rigid connecting arm 54 by bolts on the outer wall area of the mixer buffer hopper 1. One end of the Z-shaped rigid connecting arm 54 is fixed to the lifting rack push rod 53, and its body extends horizontally, passing through the long strip-shaped clearance groove reserved on the side wall of the mixer buffer hopper 1, and finally extends into the interior of the mixer buffer hopper 1.
[0023] It is worth mentioning that the structure of the mixer buffer hopper 1 is an upper straight section plus a lower conical section. During normal production, the material will only accumulate in the lower conical section, and the long strip-shaped clearance chute will be opened at the upper part of the straight section, above the normal material level. In other words, this opening is always above the material accumulation height and will not directly contact the powder material. Only a very small amount of suspended dust will come into contact with the opening, making sealing easy. In this embodiment, a Z-shaped rigid connecting arm 54 is used to install sealing plates on the inner and outer sides of the side wall of the mixer buffer hopper 1 to further prevent material leakage and dust overflow. In addition, other methods can be used, for example, two upper and lower polyurethane or fluororubber wear-resistant scrapers can be installed on one side of the chute, with the scrapers tightly clamping the upper and lower surfaces of the Z-shaped rigid connecting arm 54. When the Z-shaped rigid connecting arm 54 slides up and down, the scraper always maintains an elastic fit, which not only does not hinder the movement of the Z-shaped rigid connecting arm 54, but also completely blocks suspended dust inside the chamber, preventing it from entering the gaps in the chute. Alternatively, a retractable accordion dust cover (similar to a machine tool guide dust cover) can be installed on the outer side of the chute. The upper and lower ends of the dust cover are fixed to the top of the Z-shaped rigid connecting arm 54 and the chamber wall, respectively. When the Z-shaped rigid connecting arm 54 slides up and down, the dust cover extends and retracts synchronously, completely sealing the external opening of the chute throughout the entire process, preventing internal dust from escaping and preventing impurities from the workshop from entering the chamber. Such methods are also within the scope of protection of this application.
[0024] It is worth noting that this embodiment uses a sealed pneumatic slide gate valve specifically designed for the powder industry. Through a mature double-seal and anti-jamming structure design, it completely eliminates the problems of material leakage and jamming. It is a mature standard component that has been used in the feed and powder industries for decades. Specifically, a fluororubber or polyurethane sealing strip with a metal skeleton is embedded inside the fixed outer frame of the gate. The sealing strip tightly adheres to the upper and lower surfaces of the horizontal sliding slide plate, completely filling the sliding gaps to form the first soft seal, achieving zero leakage at the bubble level under normal temperature and pressure. Simultaneously, the slide plate and valve seat are hardened to form a second hard seal. Even if the soft seal experiences slight wear, the hard seal can still block the powder, preventing internal leakage. The sealing strip uses a movable elastic valve seat design, which automatically compensates for the sealing gap even after long-term wear, maintaining a tight fit with the slide plate and preventing the problem of increasing leakage with use.
[0025] Example 3 Based on the above embodiment two, as follows Figure 1 and Figure 2 As shown, an arch-breaking assembly is arranged in the lower internal region of the mixer buffer hopper 1. This assembly includes a vertical central slide bar 55 made of stainless steel. The top of the vertical central slide bar 55 is welded and fixed to a Z-shaped rigid connecting arm 54 extending into the hopper. Four steel plates arranged in a cross shape are symmetrically welded around the vertical central slide bar 55, forming a cross-shaped arch-breaking cutter 56. The inclination angle of the four outer blades of the cross-shaped arch-breaking cutter 56 is consistent with the slope of the conical inner wall at the bottom of the mixer buffer hopper 1, and a 50 mm gap is left between the blades and the inner wall.
[0026] Below the vertical center slide bar 55, an active suction assembly is arranged. At the top center of the inner layer of the packing scale buffer hopper 3, a cylindrical suction chamber 57 is suspended and fixed by a channel steel bracket. The bottom end of the vertical center slide bar 55 continues downward, passing through the top stainless steel cover plate of the cylindrical suction chamber 57, and at its end, a circular suction piston 58 is clamped and fixed by a locking nut. The circular suction piston 58 is a solid stainless steel disc, with its outer edge wrapped with a PTFE wear-resistant sealing ring. The outer edge of the PTFE sealing ring forms a smooth sliding contact with the inner cylindrical wall of the cylindrical suction chamber 57. The bottom section of the cylindrical suction chamber 57 is completely open. To prevent powder from entering the chamber, a layer of annular needle-punched nylon filter mesh 59 is wrapped around the open bottom edge using a metal clamp. An exhaust hole is drilled on the top cover plate of the cylindrical intake chamber 57. A one-way exhaust pressure relief valve 510 is screwed into the exhaust hole using a pipe thread. The valve is equipped with a spring and a sealing ball, which only allows the airflow to break through the spring resistance and be discharged from the inside of the cylindrical intake chamber 57 to the external workshop atmosphere.
[0027] It is worth mentioning that an annular space is reserved between the outer wall of the cylindrical suction chamber 57 and the inner wall of the buffer hopper. This annular space is the main channel for material to fall. The top cover of the cylindrical suction chamber 57 is made into a conical umbrella structure with a high center and low edges. Material falling on the cover will automatically slide down the conical surface into the hopper below, without forming a pile-up.
[0028] Example 4 Based on the above embodiment three, as follows Figure 1 and Figure 2 As shown, a DCS-A50 / YS auger double-hopper packaging scale 4 is connected to the bottom flange of the buffer hopper 3 of the packaging scale. The auger spiral blades and weighing hopper walls inside the auger double-hopper packaging scale 4, which come into contact with the premixed material, are all made of stainless steel. An exhaust pipe is fitted around the suction port of the discharge chute of the auger double-hopper packaging scale 4, and the exhaust pipe is connected via a flange to a TBLY26-1500 pulse dust collector assembly at the rear. A sewing conveyor 7 is anchored to the concrete floor below the auger double-hopper packaging scale 4 using anchor bolts.
[0029] It is worth mentioning that two trapezoidal force-transmitting steel plates can be fully welded and fixed to the outer side wall of the buffer hopper 3 of the packing scale. AH60 anti-bridging air hammers, equipped with solenoid valve control devices, are fastened to the outer surface of the trapezoidal force-transmitting steel plates using high-strength bolts. This serves as a backup; in extreme conditions where material bridging occurs within the buffer hopper 3 of the packing scale, the air hammers can be used to strike the hopper wall to assist in breaking the bridging, achieving a double safety measure.
[0030] The working principle of this invention is as follows: When the central control PLC system issues the instruction to feed and bag the premixed material, the control system outputs air to the drive cylinder 23. The push rod of the drive cylinder 23 retracts inward, pulling the horizontal sliding plate 22 to move horizontally outward towards the pneumatic gate 2, thereby opening the bottom material discharge channel. During the horizontal backward movement of the horizontal sliding plate 22, the horizontal rack 51 fixed to its side moves backward in a straight line. The displacement of the horizontal rack 51 causes the reversing gear 52 to rotate clockwise along the fixed rotating shaft pin. The clockwise rotation torque of the reversing gear 52 is then transmitted to the lifting rack push rod 53 meshing above it, forcing the lifting rack push rod 53 to move vertically downward in a straight line along the fixed slide rail.
[0031] The downward movement of the lifting rack push rod 53 pulls the vertical center slide rod 55 located inside the mixer buffer hopper 1 downwards via the Z-shaped rigid connecting arm 54. At this moment, the cross-shaped arch-breaking cutter 56 fixed on the slide rod cuts downwards. In this brief instant, the premixed powder, having lost its bottom support plate, is just about to compress itself under the action of gravity and wall friction to form a powder bridge arch when the blade of the cross-shaped arch-breaking cutter 56 cuts the force network between the powder particles directly along a trajectory parallel to the hopper wall. The powder cannot form an arch and can only flow smoothly down the open discharge port into the packing scale buffer hopper 3 below like a waterfall.
[0032] As powder is poured into the buffer hopper 3 of the packaging scale, causing a violent displacement of internal air and forming an upward dust-laden airflow, the vertical center slide rod 55 simultaneously pulls the circular suction piston 58 below it downward. Because the edge of the circular suction piston 58 slides against the inner wall of the cylindrical suction chamber 57, the rapid descent of the circular suction piston 58 causes the originally narrow enclosed space above the piston to expand instantaneously, creating a vacuum negative pressure area within this cavity. The upward-rushing airflow and the entrained extremely fine dust encounter the suction from above, forcing the airflow to change direction and pass through the annular needle-punched nylon filter belt 59 at the bottom. The vitamin dust is intercepted by the nylon fiber pores on the outside of the filter belt and falls back into the chamber during subsequent vibrations, while the displaced clean air is drawn into the cylindrical suction chamber 57.
[0033] It's worth noting that it's not necessary to create an absolute high vacuum in the entire packing scale buffer hopper 3. It's sufficient to maintain a stable, slightly negative pressure inside the hopper, ensuring the internal air pressure remains consistently lower than the external atmospheric pressure. The packing scale buffer hopper 3 is a relatively sealed container with no openings other than the upper inlet (gate) and the lower packaging opening. During the feeding process, the cylindrical suction chamber 57 continuously draws air out of the packing scale buffer hopper 3. The amount of air drawn out is far greater than the amount entering through the gate gap, ensuring the internal air pressure remains consistently lower than the external atmospheric pressure. This pressure difference creates a fixed airflow direction: outside air flows only into the packing scale buffer hopper 3 through the gate gap, while dust-laden air inside does not flow out through the gap. This is similar to a kitchen with a high-powered range hood creating a slightly negative pressure in the room, causing fumes to only enter the hood and not escape through the door gap. The air drawn into the cylindrical suction chamber 57 is discharged directly to the outside (into the workshop atmosphere) of the packing scale buffer hopper 3 through the one-way exhaust pressure relief valve 510 at the top when the gate is closed and the circular suction piston 58 moves upward to reset, instead of being discharged back into the packing scale buffer hopper 3. This forms a complete one-way cycle from drawing air from the packing scale buffer hopper 3 to exhausting it to the outside, continuously maintaining a slight negative pressure state inside the packing scale buffer hopper 3 and effectively preventing dust leakage.
[0034] When the packaging scale completes the required weighing, the central control system commands the drive cylinder 23 to extend and close the horizontal sliding plate 22. At this time, the horizontal rack 51 advances forward, and the reversing gear 52 rotates counterclockwise, lifting the lifting rack push rod 53 and the vertical center slide rod 55 upwards to reset them. Simultaneously, the cross-shaped arch-breaking cutter 56 cuts upwards into the material layer, preparing for the next action. At the same time, the circular suction piston 58 presses upwards, reducing the internal space of the cylindrical suction chamber 57 and generating positive pressure. Because the air resistance of the bottom annular needle-punched nylon filter belt 59 is greater than that of the upper valve, the clean air inside pushes open the sealing ball inside the one-way exhaust pressure relief valve 510, smoothly discharging into the external environment. During this period, the small amount of residual dust generated when the auger double-bucket packaging scale 4 discharges material into bags is drawn into the pulse dust collector assembly through the connected exhaust pipe for unified filtration and collection.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. A premixed feed improvement device for feed production, comprising a mixer buffer hopper (1), a baling scale buffer hopper (3), and an auger double-hopper baling scale (4), wherein a pneumatic gate (2) is connected between the bottom discharge end of the mixer buffer hopper (1) and the feed inlet end of the baling scale buffer hopper (3), characterized in that: It also includes an airlock linkage anti-blocking and dust suppression mechanism (5), which includes a power transmission component, an arch-breaking component, and an active suction component. The power transmission component is connected to the horizontal moving part of the pneumatic gate (2) through a mechanical structure. The arch-breaking component is installed in the lower internal area of the mixer buffer hopper (1), and the active suction component is installed in the upper internal area of the packing scale buffer hopper (3). When the pneumatic gate (2) is opened to the outside, the power transmission component receives horizontal kinetic energy and synchronously drives the arch-breaking component to move vertically downward. At the same time, the power transmission component synchronously drives the internal structure of the active suction component to move vertically downward to generate a negative pressure suction space.
2. The premix improvement equipment for feed production according to claim 1, characterized in that: The pneumatic gate (2) includes a fixed outer frame (21), a horizontal sliding plate (22), and a drive cylinder (23). The output end of the drive cylinder (23) is fixedly connected to the horizontal sliding plate (22). The power transmission assembly also includes a horizontal rack (51) fixed on the side of the horizontal sliding plate (22), a reversing gear (52) installed on the outside of the fixed outer frame (21), and a vertically arranged lifting rack push rod (53). The lower teeth of the horizontal rack (51) mesh with the teeth of the reversing gear (52), and the lifting rack push rod (53) meshes with the teeth of the side of the reversing gear (52).
3. The premix improvement equipment for feed production according to claim 2, characterized in that: The power transmission assembly also includes a Z-shaped rigid connecting arm (54), the top end of the lifting rack push rod (53) extends to the outer wall of the mixer buffer hopper (1), one end of the Z-shaped rigid connecting arm (54) is fixed to the lifting rack push rod (53), and the other end of the Z-shaped rigid connecting arm (54) penetrates the outer wall of the mixer buffer hopper (1) and extends into the mixer buffer hopper (1).
4. The premix improvement equipment for feed production according to claim 3, characterized in that: The arch-breaking assembly includes a vertical central slide bar (55) and a cross-shaped arch-breaking cutter (56) fixed around the vertical central slide bar (55). The top end of the vertical central slide bar (55) is fixedly connected to one end of the Z-shaped rigid connecting arm (54) extending inward. The four blade ends of the cross-shaped arch-breaking cutter (56) are parallel to the conical inner wall inside the mixer buffer hopper (1) with a gap.
5. The feed production premix improvement equipment according to claim 1, characterized in that: The active suction assembly includes a cylindrical suction chamber (57) fixed inside the packing scale buffer hopper (3) and a circular suction piston (58) installed inside the cylindrical suction chamber (57). The bottom end of the vertical center slide rod (55) extends downward through the top cover plate of the cylindrical suction chamber (57) and is fixedly connected to the center position of the circular suction piston (58).
6. The feed production premix improvement equipment according to claim 5, characterized in that: The circular suction piston (58) is a solid circular stainless steel disc. The outer edge dimension of the circular suction piston (58) is adapted to the inner diameter dimension of the cylindrical suction chamber (57). The outer edge of the circular suction piston (58) and the inner cylindrical wall of the cylindrical suction chamber (57) form a sliding contact state.
7. The feed production premix improvement equipment according to claim 5, characterized in that: The bottom of the cylindrical air intake chamber (57) is open, and the bottom edge of the cylindrical air intake chamber (57) is wrapped with an annular needle-punched nylon filter mesh (59).
8. The feed production premix improvement equipment according to claim 5, characterized in that: The top cover of the cylindrical intake chamber (57) has an exhaust port, and a one-way exhaust pressure relief valve (510) is installed on the exhaust port, which only allows gas to be discharged from the inside of the cylindrical intake chamber (57) to the external environment.
9. A premix improvement device for feed production according to claim 2, characterized in that: The bottom discharge end of the mixer buffer hopper (1) is a front and rear double outlet type. The bottom discharge end of the mixer buffer hopper (1) is connected to two independent pneumatic gates (2). The bottom of the two pneumatic gates (2) converges and connects to the feed end of a packing scale buffer hopper (3). Each pneumatic gate (2) is independently equipped with a set of airlock linkage anti-blocking and dust suppression mechanism (5).
10. A premix improvement device for feed production according to claim 1, characterized in that: The feed inlet of the auger double bucket packaging scale (4) is connected to an exhaust pipe, and the other end of the exhaust pipe is connected to an external pulse dust removal assembly. A sewing conveyor (7) is installed on the ground below the auger double bucket packaging scale (4).