A mixer for producing solid feed additives

Abstract

The utility model relates to a kind of mixers for solid feed additive production. Including support, several universal caster and supporting leg;Still including the installation box installed on support, the mounting baffle that its inner cavity is separated into upper and lower two chambers is fixedly connected in installation box, heat preservation layer is all provided on the inner wall of upper and lower two chambers;Stirring drum, stirring group and medium pipe two are provided in upper chamber;Stirring assembly includes stirring shaft and the two stirring screw belt units of symmetrical arrangement;Crushing device is installed at the feed inlet of stirring drum;Discharge hopper and plug valve assembly are installed at the discharge port of stirring drum;Transmission cylinder shell, screw stirring assembly and medium pipe one are provided in lower chamber;Still including driving device.The utility model forms collaborative work system by integrating crushing device and multistage stirring structure, with the advantages of high uniformity, effective crushing of agglomerate, prevention of discharge jam, high work efficiency and temperature control function.

Description

Technical Field

[0001] This utility model belongs to the technical field of feed production equipment, and in particular relates to a mixing machine for producing solid feed additives. Background Technology

[0002] Feed additives, as an important component of the modern feed industry, play a crucial role in enhancing the nutrition of basic feeds and improving animal production performance.

[0003] In the production of feed additives, the mixing process is a crucial step in ensuring the uniform mixing of raw materials. A mixing device is a machine used to mix multiple materials. Traditional mixing devices typically employ a simple tank container combined with a vertical stirring component. During operation, the raw materials are poured into the tank container, and the rotating stirring component agitates the materials within, thereby achieving mixing and reaction between the raw materials.

[0004] However, during use, several shortcomings of the aforementioned mixing devices were discovered: First, a single stirring method is insufficient to achieve thorough mixing of materials, especially for solid feed additives that require highly uniform mixing; second, traditional discharge structures are prone to material accumulation at the discharge port, leading to frequent blockages; third, clumps formed during raw material transportation and storage cannot be effectively broken up during the mixing process, severely affecting the uniformity of the final product. Furthermore, existing equipment generally lacks temperature control functionality, failing to meet the production requirements of certain temperature-sensitive feed additives. These technical deficiencies not only reduce production efficiency but also affect the stability of product quality. Therefore, there is an urgent need to design a mixing machine for solid feed additive production to solve these problems. Summary of the Invention

[0005] This invention provides a mixing machine for producing solid feed additives with a reasonable structural design to solve the technical problems existing in the prior art. This invention integrates a crushing device and a multi-stage mixing structure to form a collaborative working system, constructing a complete process system for raw material pretreatment and main mixture conveying. It has the advantages of improving mixing uniformity, effectively breaking up agglomerates, preventing discharge blockage, high working efficiency, and temperature control function.

[0006] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A mixing machine for producing solid feed additives includes a support, with several universal casters and several support feet installed at the bottom of the support; it also includes an installation box installed on the support, with an installation partition fixedly connected inside the installation box to divide its inner cavity into upper and lower chambers, and a heat insulation layer provided on the inner walls of both the upper and lower chambers; a horizontally arranged stirring drum is arranged in the upper chamber of the installation box, and a stirring assembly is rotatably connected to the inner cavity of the stirring drum; it also includes a medium pipe coiled on the outer wall of the stirring drum and connected to a medium source; the stirring assembly includes a horizontally arranged stirring shaft rotatably connected to the stirring drum, and two symmetrically arranged stirring ribbons are installed on the stirring shaft. The unit includes: a feed inlet at the top of the mixing drum, with a crushing device mounted on the top of the mounting box connected to the feed inlet; a discharge outlet at the bottom of the mixing drum, with a discharge hopper installed at the discharge outlet, and a gate valve assembly installed at the discharge outlet of the discharge hopper; a transversely arranged transmission cylinder shell with its feed inlet connected to the gate valve assembly, the outer port of the transmission cylinder shell extending to the outside of the mounting box; a spiral stirring assembly rotatably connected to the transmission cylinder shell, and a media pipe coiled around the outer wall of the transmission cylinder shell and connected to a media source, located in the lower chamber of the mounting box; and a drive device for synchronously driving the crushing device, the stirring assembly, and the spiral stirring assembly.

[0007] The advantages and positive effects of this utility model are as follows: This utility model provides a mixing machine for solid feed additive production. Through the combination of universal casters and support legs, it achieves a balance between equipment mobility and operational stability. The double-chamber structure of the mounting box, combined with the insulation layer design, provides an independent temperature-controlled environment for different process stages. The combination of a horizontal mixing drum and a symmetrical stirring ribbon unit breaks through the traditional vertical mixing mode, and the convection effect generated by the bidirectional spiral stirring ribbon enhances the uniformity of material mixing. The direct connection between the crushing device and the mixing drum inlet achieves pre-crushing treatment of agglomerated raw materials, eliminating the impact of material agglomeration on the mixing effect from the source. The combined design of the transmission cylinder shell and the medium pipe forms a secondary processing channel during the material conveying stage, and the material characteristics are adjusted through an external medium circulation system. The synchronous drive of each functional component by the drive device ensures the coordinated operation of the crushing, mixing, and conveying processes, significantly improving overall operating efficiency. This utility model, by integrating a crushing device and a multi-stage stirring structure to form a coordinated operating system, constructs a complete process system for raw material pretreatment, main mixing, and material conveying.

[0008] Preferably, the stirring ribbon unit includes an outer stirring rod mechanism and a middle stirring rod mechanism installed at the end and middle of the stirring shaft, respectively, and also includes an inner stirring rod mechanism installed on the stirring shaft between the outer stirring rod mechanism and the middle stirring rod mechanism; a spiral stirring belt one and a spiral stirring belt two are installed between the outer stirring rod mechanism and the inner stirring rod mechanism, and the spiral stirring belt one and the spiral stirring belt two are arranged symmetrically about the stirring shaft; a spiral stirring belt three and a spiral stirring belt four are installed between the inner stirring rod mechanism and the middle stirring rod mechanism, and the spiral stirring belt three and the spiral stirring belt four are arranged symmetrically about the stirring shaft; the two spiral stirring belts one, the two spiral stirring belts two, the two spiral stirring belts three, and the two spiral stirring belts four are all distributed in a figure-eight shape.

[0009] Preferably, the outer stirring rod mechanism, the inner stirring rod mechanism, and the middle stirring rod mechanism have the same structure, each including two saddle-shaped connecting parts that are mated together. The two saddle-shaped connecting parts are detachably connected to the stirring shaft by bolts and lock nuts. A connecting rod is fixed to each saddle-shaped connecting part, and a connecting plate for installing the spiral stirring belt is installed at the outer end of each connecting rod.

[0010] Preferably: two adjacent stirring rod mechanisms are arranged in a cross shape in the axial direction of the stirring shaft; the two ends of the first spiral stirring belt are detachably connected to the outer ends of the two vertical parts of the outer stirring rod mechanism and the inner stirring rod mechanism, respectively; the two ends of the second spiral stirring belt are detachably connected to the outer ends of the other two vertical parts of the outer stirring rod mechanism and the inner stirring rod mechanism, respectively; the two ends of the first spiral stirring belt are detachably connected to the outer ends of the two vertical parts of the inner stirring rod mechanism and the middle stirring rod mechanism, respectively; the two ends of the fourth spiral stirring belt are detachably connected to the outer ends of the other two vertical parts of the inner stirring rod mechanism and the middle stirring rod mechanism, respectively.

[0011] Preferably, the crushing device includes a crushing box installed on the top of the mounting box, a flared feed inlet at the top of the crushing box, and a discharge outlet at the bottom of the crushing box that connects with the feed inlet of the mixing drum; two sets of crushing roller assemblies are rotatably connected to and correspondingly arranged inside the crushing box; and a drive spur gear is keyed to the outer end of each crushing roller assembly, with the two drive spur gears meshing.

[0012] Preferably, the drive device includes a drive motor, an output transmission shaft connected to the rotating end of the stirring assembly and arranged laterally mounted on the output shaft of the drive motor, a longitudinal transmission shaft rotatably connected to the mounting box and arranged longitudinally, a bevel gear pair two installed between the upper end of the longitudinal transmission shaft and the output transmission shaft, and a bevel gear pair one installed between the lower end of the longitudinal transmission shaft and the rotating end of the spiral stirring assembly; it also includes a crushing transmission shaft selectively installed in one of the two sets of crushing roller assemblies, the crushing transmission shaft being arranged laterally, and a pulley transmission pair installed between the crushing transmission shaft and the output transmission shaft.

[0013] Preferably, the slide gate valve assembly includes a discharge mounting port installed at the discharge outlet of the discharge hopper, a slide gate groove is provided on the discharge mounting port, and a discharge slide gate for opening and closing the material outlet of the slide gate valve assembly is slidably inserted in the slide gate groove. It also includes a linear drive component installed on the discharge mounting port, two linear drive components are provided, and the protruding end of each linear drive component is connected to the discharge slide gate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main view and partial cross-sectional structure of this utility model; Figure 2 This is a schematic diagram of the main structure of the stirring assembly in this utility model; Figure 3 This is a three-dimensional structural diagram of the stirring component in this utility model; Figure 4 This is a three-dimensional structural diagram of the crushing device and the driving device in this utility model; Figure 5 This is a three-dimensional structural diagram of the slide valve assembly in this utility model.

[0015] In the diagram: 1. Universal casters; 2. Support legs; 3. Mounting box; 4. Medium pipe one; 5. Spiral agitator assembly; 6. Transmission cylinder shell; 7. Mounting partition; 8. Slide valve assembly; 8-1. Linear drive component; 8-2. Slide valve slot; 8-3. Discharge port; 8-4. Discharge slide plate; 9. Discharge hopper; 10. Agitator cylinder; 11. Agitator assembly; 11-1. Spiral agitator belt one; 11-2. Spiral agitator belt two; 11-3. Agitator shaft; 11-4. External agitator rod mechanism; 11-5. Internal agitator rod mechanism; 1-6. Spiral stirring belt three; 11-7. Middle stirring rod mechanism; 11-8. Spiral stirring belt four; 12. Medium pipe two; 13. Crushing device; 13-1. Transmission spur gear; 13-2. Crushing box; 13-3. Crushing cutter disc; 13-4. Crushing cutter shaft; 14. Drive device; 14-1. Bevel gear pair one; 14-2. Longitudinal transmission shaft; 14-3. Bevel gear pair two; 14-4. Output transmission shaft; 14-5. Crushing transmission shaft; 14-6. Pulley transmission pair; 14-7. Drive motor. Detailed Implementation

[0016] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail: Please see Figure 1This utility model discloses a mixing machine for producing solid feed additives, comprising a support, with several omnidirectional casters 1 and several support feet 2 installed at the bottom of the support. The omnidirectional casters 1 are movable rollers with locking mechanisms, specifically polyurethane-coated omnidirectional casters, which, together with the height-adjustable support feet 2, form a stable support. It also includes a mounting box 3 mounted on the support, with a mounting partition 7 fixedly connected inside the mounting box 3, dividing its internal cavity into upper and lower chambers. Both the upper and lower chambers have insulation layers on their inner walls. The mounting partition 7 is a 5-8mm thick metal partition plate, specifically welded to the mounting box 3, dividing the equipment into a mixing zone and a material conveying zone. The insulation layer is a heat insulation layer made of ceramic fiber material, specifically employing a double-layer hollow structure design to maintain stable material temperatures within the upper and lower chambers.

[0017] like Figure 1 As shown, a horizontally arranged stirring drum 10 is provided in the upper chamber of the mounting box 3. A stirring assembly 11 is rotatably connected to the inner cavity of the stirring drum 10. The stirring drum 10 also includes a medium pipe 12 coiled on the outer wall of the stirring drum 10 and connected to the medium source. A feed inlet is provided at the upper part of the stirring drum 10, and a crushing device 13 installed at the top of the mounting box 3 is connected to the feed inlet. A discharge outlet is provided at the lower part of the stirring drum 10, and a discharge hopper 9 is installed at the discharge outlet. The discharge outlet also includes a slide valve assembly 8 installed at the discharge outlet of the discharge hopper 9.

[0018] like Figure 1 As shown, a transmission cylinder 6 is arranged horizontally in the lower chamber of the mounting box 3, with its feed inlet connected to the slide valve assembly 8. The outer port of the transmission cylinder 6 extends to the outside of the mounting box 3. A spiral stirring assembly 5 is rotatably connected to the transmission cylinder 6 inside the transmission cylinder 6. The assembly also includes a medium pipe 4 coiled around the outer wall of the transmission cylinder 6 and connected to the medium source in the lower chamber of the mounting box 3. The assembly also includes a drive device 14 for driving the crushing device 13, the stirring assembly 11 and the spiral stirring assembly 5 to operate synchronously.

[0019] With the above setup, the crushing, mixing, and conveying functional modules are integrated into a dual-chamber housing, and process coordination is achieved through a unified drive system.

[0020] like Figure 2 and Figure 3 As shown, the stirring assembly 11 includes a stirring shaft 11-3 arranged horizontally and rotatably connected to the stirring drum 10, and two symmetrically arranged stirring ribbon units are installed on the stirring shaft 11-3.

[0021] This utility model further proposes a stirring ribbon unit including an outer stirring rod mechanism 11-4 and a middle stirring rod mechanism 11-7 respectively installed at the end and middle of the stirring shaft 11-3, and also including an inner stirring rod mechanism 11-5 installed on the stirring shaft 11-3 between the outer stirring rod mechanism 11-4 and the middle stirring rod mechanism 11-7; a spiral stirring belt one 11-1 and a spiral stirring belt two 11-2 are installed between the outer stirring rod mechanism 11-4 and the inner stirring mechanism 11-5, and the spiral stirring belt one 11-1 and the spiral stirring belt two 11-2 are... The second spiral stirring belt 11-2 is arranged symmetrically about the stirring shaft 11-3; a third spiral stirring belt 11-6 and a fourth spiral stirring belt 11-8 are installed between the inner stirring rod mechanism 11-5 and the middle stirring rod mechanism 11-7, and the third spiral stirring belt 11-6 and the fourth spiral stirring belt 11-8 are arranged symmetrically about the stirring shaft 11-3; the two first spiral stirring belts 11-1, the two second spiral stirring belts 11-2, the two third spiral stirring belts 11-6 and the two fourth spiral stirring belts 11-8 are all distributed in a figure-eight shape.

[0022] The outer stirring rod mechanism 11-4 refers to the support structure located at the end of the stirring shaft 11-3. Specifically, it can be implemented using a detachable connection method combining saddle-shaped connectors and bolts, used to fix the end position of the spiral stirring belt. The inner stirring rod mechanism 11-5 refers to the transition support structure located between the outer stirring rod mechanism 11-4 and the middle stirring rod mechanism 11-7. It forms an adjustable connection with the stirring shaft 11-3 through saddle-shaped connectors, adapting to different installation angles of the spiral stirring belts. The middle stirring rod mechanism 11-7 refers to the core support structure located in the middle of the stirring shaft 11-3, using the same saddle-shaped connection method as the inner and outer mechanisms to form symmetrically distributed fixed support points. Spiral stirring belt one 11-1 and spiral stirring belt two 11-2 refer to spiral stirring elements arranged in a centrally symmetrical manner. Specifically, they can be made of bent metal strips and fixed to the saddle-shaped connectors with bolts, forming a bidirectional material shearing channel. Spiral mixing belts 3 (11-6) and 4 (11-8) refer to symmetrically arranged spiral elements in the central region, whose spiral direction complements that of the outer mixing belts, generating axial material circulation through a figure-eight distribution. The saddle-shaped connector refers to a connecting component with an arc-shaped groove, which can be designed as a split structure and fixed to the mixing shaft 11-3 by bolts, allowing adjustment of the radial installation position of the spiral mixing belts.

[0023] Specifically, when the stirring shaft 11-3 rotates, the outer stirring rod mechanism 11-4 drives the spiral stirring belts 11-1 and 11-2 to form a counter-rotating shear flow field. Their centrally symmetrical arrangement causes the material to generate radial counter-movement. The two spiral stirring belts 11-6 and 11-8 between the inner stirring rod mechanism 11-5 and the middle stirring rod mechanism 11-7 are arranged in a figure-eight pattern, conveying the material from the middle of the stirring shaft 11-3 to both ends. The centrally symmetrical layout of the outer spiral stirring belts combined with the figure-eight distribution of the inner spiral stirring belts allows the material to circulate axially while simultaneously undergoing multi-directional mixing radially. The detachable design of the saddle-shaped connector allows adjustment of the installation angle of the spiral stirring belts according to the material characteristics. The symmetrical arrangement of spiral stirring belts 11-1 and 11-2 forms a bidirectional shear surface, effectively cutting through material agglomerates, while the figure-eight distribution of the two spiral stirring belts 11-6 and 11-8 promotes the reciprocating motion of the material in the axial direction.

[0024] Compared to existing technologies, traditional mixers often employ a single spiral ribbon or paddle-type stirring structure, resulting in material flowing only in one direction and creating mixing dead zones. Existing mixing devices cannot form multi-stage shearing zones, leading to ineffective breaking up of agglomerated materials. This invention constructs a multi-directional mixing flow field by setting up a three-stage stirring rod mechanism and four sets of symmetrical spiral ribbons. The outer symmetrical spiral ribbons generate radial counter-currents, while the inner figure-eight spiral ribbons form axial circulation, enabling thorough mixing of materials in three-dimensional space. Traditional structures often use continuous single spiral ribbons, while this invention employs a segmented symmetrical spiral ribbon layout, maintaining the characteristics of spiral conveying while adding shearing and crushing capabilities.

[0025] Through the above technical solution, this utility model achieves step-by-step crushing and three-dimensional mixing of agglomerated materials. The symmetrical layout of the spiral stirring belt eliminates mixing dead zones, and the figure-eight distribution structure enhances axial material circulation. The combined use of the multi-stage stirring rod mechanism and the adjustable spiral belt can adapt to the mixing requirements of different materials and effectively prevent local accumulation of materials during the mixing process. The synergistic effect between the spiral stirring belts subjectes the material to shear force and propulsion force simultaneously in the radial and axial directions, significantly improving mixing uniformity and crushing efficiency.

[0026] This utility model further proposes that the outer stirring rod mechanism 11-4, the inner stirring rod mechanism 11-5, and the middle stirring rod mechanism 11-7 have the same structure, all of which include two saddle-shaped connecting parts that are mated together. The two saddle-shaped connecting parts are detachably connected to the stirring shaft 11-3 by bolts and locking nuts. A connecting rod is fixed to each saddle-shaped connecting part, and a connecting plate for installing a spiral stirring belt is installed at the outer end of each connecting rod.

[0027] The saddle-shaped connector refers to a symmetrical connecting component with an arc-shaped groove matching the outer contour of the stirring shaft 11-3. It can be implemented as a separate casting or stamping part, forming a ring-shaped clamp structure through butt joints to secure the stirring shaft 11-3. Bolts and lock nuts refer to a standard fastener combination, specifically using hexagonal head bolts with nylon lock nuts to create an adjustable axial clamping force. Connecting rods refer to rigid support rods of a predetermined length, specifically steel pipes welded to both sides of the saddle-shaped connector. Connecting plates refer to metal plates with mounting holes for fixing the ends of the spiral mixing belt.

[0028] Specifically, the saddle-shaped connector consists of two symmetrical halves that axially meet along the stirring shaft 11-3, and are axially secured using double-ended bolts passing through the bolt holes. The connecting rod extends perpendicular to the axis of the stirring shaft 11-3, and its end is welded to a connecting plate that forms a mounting plane for connection with the end of the spiral mixing belt. When it is necessary to adjust the installation angle of the spiral mixing belt, the locking nut can be loosened and the saddle-shaped connector rotated to the target angle and then re-locked. This structure allows for the individual replacement of any stirring rod mechanism without disassembling the stirring shaft 11-3, and enables rapid adaptation to different shapes of spiral mixing belts through a standardized interface design.

[0029] Compared to existing technologies, traditional stirring rods often employ welding or integral casting, resulting in difficulties in maintenance and an inability to adjust the stirring angle. Furthermore, existing snap-fit ​​connection structures suffer from insufficient connection strength, easily loosening during high-speed stirring. This invention utilizes a split-type clamping structure with a saddle-shaped connector, ensuring connection rigidity while achieving angle adjustment. The standardized bolt connection method ensures assembly accuracy and reduces maintenance costs.

[0030] Through the above technical solution, this utility model solves the technical problem of difficult disassembly and maintenance of the mixing component 11, and realizes the rapid separation and reassembly of the mixing rod mechanism and the spiral mixing belt. The adjustable saddle-shaped connector design allows for adjustment of the spiral mixing belt's installation angle according to material characteristics, effectively improving the mixing uniformity of viscous or easily agglomerated materials. The modular structure design significantly shortens equipment maintenance downtime and reduces the cost of replacing vulnerable parts.

[0031] This utility model further proposes that two adjacent stirring rod mechanisms are arranged in a cross shape in the axial direction of the stirring shaft 11-3; the two ends of the first spiral stirring belt 11-1 are detachably connected to the outer ends of the two vertical parts of the outer stirring rod mechanism 11-4 and the inner stirring rod mechanism 11-5 respectively; the two ends of the second spiral stirring belt 11-2 are detachably connected to the outer ends of the other two vertical parts of the outer stirring rod mechanism 11-4 and the inner stirring rod mechanism 11-5 respectively; the two ends of the third spiral stirring belt 11-6 are detachably connected to the outer ends of the two vertical parts of the inner stirring rod mechanism 11-5 and the middle stirring rod mechanism 11-7 respectively; and the two ends of the fourth spiral stirring belt 11-8 are detachably connected to the outer ends of the other two vertical parts of the inner stirring rod mechanism 11-5 and the middle stirring rod mechanism 11-7 respectively.

[0032] The "cross distribution" refers to the staggered arrangement of adjacent stirring rods at 90 degrees on the axial projection plane. This can be achieved by misaligning the bolt holes of saddle-shaped connectors, creating multi-directional material flow channels through spatial misalignment. The outer end of the vertical section refers to the part where the connecting rod ends and the connecting plate unit meet. This can be achieved by bolting a connecting plate with slotted holes to the end of the spiral mixing belt, allowing for fine-tuning of the spiral belt installation angle by adjusting the position of the slotted holes. The detachable connection refers to the mechanical connection between the spiral mixing belt and the stirring rod mechanism using bolts. This can be achieved using M8 stainless steel bolts with anti-loosening nuts, facilitating disassembly, maintenance, or replacement of spiral belts of different specifications.

[0033] Specifically, when the stirring shaft 11-3 rotates, the cross-shaped stirring rod mechanism drives the spiral stirring belts to form a material shear force field that is interlaced axially and radially. The two sets of spiral belts between the outer stirring rod mechanism 11-4 and the inner stirring rod mechanism 11-5 generate material pushing action in opposite directions. For example, spiral stirring belt one 11-1 adopts a left-handed structure while spiral stirring belt two 11-2 adopts a right-handed structure, forcing the material to form a convective circulation within the stirring drum 10. The two sets of spiral belts between the inner stirring rod mechanism 11-5 and the middle stirring rod mechanism 11-7 further enhance the material diffusion in the central region. Through the combination of the upward flow of spiral stirring belt three 11-6 and the downward pressure flow of spiral stirring belt four 11-8, the mixing blind zone in the middle of the stirring shaft 11-3 is eliminated. The installation angle of all spiral belts can be adjusted through the strip holes of the connecting plate. The inclination angle of the spiral belts can be adjusted according to the viscosity of the material. For example, for high-viscosity materials, the angle between the spiral belt and the axis can be increased to enhance the shear force.

[0034] Compared to existing technologies, traditional mixers often employ a single spiral ribbon or parallel-distributed stirring rods, resulting in unidirectional material flow and laminar mixing. In existing technologies, the spiral ribbon is typically welded and fixed, making it impossible to adjust the installation angle and difficult to maintain. This invention combines a cross-shaped stirring rod mechanism with an adjustable spiral ribbon to create a three-dimensional turbulent mixing environment. Simultaneously, the modular connection structure solves the problem of easy deformation and detachment of traditional welded spiral ribbons.

[0035] Through the above technical solutions, this utility model realizes multi-directional forced convection of materials in the axial and radial directions, effectively eliminating dead zones in the mixing; the detachable connection structure ensures the stability of the spiral belt when rotating at high speed, and at the same time facilitates the replacement of different specifications of mixing elements according to the characteristics of the materials; the strip-shaped hole adjustment mechanism makes the installation angle of the spiral belt adjustable, which can adapt to the mixing needs of materials with different physical properties, and significantly improve the mixing uniformity and mixing efficiency.

[0036] like Figure 4 As shown, the crushing device 13 includes a crushing box 13-2 mounted on top of the mounting box 3. A flared feed inlet is provided at the top of the crushing box 13-2, and a discharge outlet that connects to the feed inlet of the mixing drum 10 is provided at the bottom of the crushing box 13-2. Two sets of crushing roller assemblies are rotatably connected to and correspondingly arranged within the crushing box 13-2. A drive spur gear 13-1 is keyed to the outer end of each crushing roller assembly, and the two drive spur gears 13-1 mesh with each other. Figure 4 As shown, the crushing roller assembly includes a crushing cutter shaft 13-4 rotatably connected to the crushing box 13-2 and arranged laterally. Several crushing cutter discs 13-3 are keyed to the crushing cutter shaft 13-4 and evenly distributed along its axial direction. A spacer connected to the crushing cutter shaft 13-4 is provided between two adjacent crushing cutter discs 13-3. The several crushing cutter discs 13-3 in the two crushing roller assemblies are arranged at intervals. Baffles are installed on the inner wall of the crushing box 13-2, which are arranged opposite to each of the two sets of crushing roller assemblies. Several through slots are opened on each baffle to allow the several crushing cutter discs 13-3 to pass through.

[0037] As can be seen, by setting up a crushing device 13 with a specific structure, the agglomerated raw materials are pre-treated before entering the mixing chamber. The flared feed inlet at the top of the crushing chamber 13-2 guides the material to enter in a concentrated manner, and the bottom discharge outlet connects with the feed inlet of the mixing drum 10 to achieve continuous conveying of the crushed material. The corresponding arrangement of the two sets of crushing roller assemblies forms a dual-roller collaborative crushing structure. Through the meshing transmission spur gear 13-1 connected by a key, the two sets of crushing roller assemblies are ensured to rotate synchronously in opposite directions, effectively improving the shearing and crushing efficiency of agglomerated materials. The outer end of the crushing roller assembly is fixed to the transmission spur gear 13-1 by a key connection, which not only ensures the reliability of power transmission but also facilitates maintenance and replacement. This structure, through a pre-crushing process, crushes the agglomerated raw materials into uniform particles, fundamentally solving the problem of uneven mixing caused by raw material agglomeration.

[0038] like Figure 4 As shown, the aforementioned drive device 14 includes a drive motor 14-7, an output transmission shaft 14-4 connected to the rotating end of the stirring assembly 11 and arranged laterally on the output shaft of the drive motor 14-7, a longitudinal transmission shaft 14-2 rotatably connected to the mounting box 3 and arranged longitudinally, a bevel gear pair 14-3 installed between the upper end of the longitudinal transmission shaft 14-2 and the output transmission shaft 14-4, and a bevel gear pair 14-1 installed between the lower end of the longitudinal transmission shaft 14-2 and the rotating end of the spiral stirring assembly 5; it also includes a crushing transmission shaft 14-5 selectively installed in one of the two sets of crushing roller assemblies, the crushing transmission shaft 14-5 being arranged laterally, and a pulley transmission pair 14-6 installed between the crushing transmission shaft 14-5 and the output transmission shaft 14-4.

[0039] As can be seen, by using the drive motor 14-7 as a single power source, the stirring assembly 11 is directly driven by the transverse output transmission shaft 14-4. Simultaneously, power is transmitted to the longitudinal transmission shaft 14-2 via the second bevel gear pair 14-3, and then to the spiral stirring assembly 5 inside the transmission cylinder 6 via the first bevel gear pair 14-1, achieving linkage between the upper and lower chamber stirring and transmission. For the crushing device 13, one set of crushing roller assemblies is connected to the transverse crushing transmission shaft 14-5. Through the pulley transmission pair 14-6, a cross-axial power transmission is formed with the output transmission shaft 14-4, enabling the crushing roller assembly and the stirring assembly 11 to operate synchronously. The second bevel gear pair 14-3 and the first bevel gear pair 14-1 respectively undertake the torque conversion functions of transverse to longitudinal and longitudinal to transverse directions. The pulley transmission pair 14-6 adapts to the power connection between components with different axial arrangements through flexible transmission, ultimately achieving an integrated transmission system where the crushing, stirring, and transmission actions are driven by a single motor.

[0040] The above setup achieves integrated power control for crushing, mixing, and conveying functions, reducing equipment space requirements and maintenance costs. The rigid transmission of the bevel gear pair ensures power transmission accuracy, while the flexible characteristics of the pulley drive pair 14-6 compensate for shaft installation errors, improving the reliability of the transmission system, reducing the overall energy consumption of the mixer, and avoiding timing error problems caused by multi-motor coordinated control.

[0041] See further Figure 5 The slide gate valve assembly 8 includes a discharge mounting port 8-3 installed at the discharge port of the discharge hopper 9, a slide gate groove 8-2 is provided on the discharge mounting port 8-3, and a discharge slide gate 8-4 for opening and closing the material port of the slide gate valve assembly 8 is slidably inserted in the slide gate groove 8-2. It also includes a linear drive 8-1 installed on the discharge mounting port 8-3. There are two linear drive 8-1s and the protruding end of each linear drive 8-1 is connected to the discharge slide gate 8-4.

[0042] The insert plate groove 8-2 refers to the guide structure located on the side wall of the discharge mounting port 8-3. Specifically, it can be machined into a rectangular slide to constrain the linear motion trajectory of the discharge insert plate 8-4. The discharge insert plate 8-4 is a flat plate structure with a sealing surface, which can be implemented using a stainless steel plate and rubber sealing strip, used to completely block or grade and regulate material flow. The linear drive component 8-1 is the actuator that provides linear power, which can be implemented using an electric push rod or a cylinder, used to precisely control the displacement of the insert plate. The symmetrical arrangement of the two linear drive components 8-1 means that they are equidistant along the width of the insert plate, which can be implemented using a synchronous controller to eliminate jamming caused by imbalance of driving torque on one side.

[0043] Precise control of the discharge port is achieved through a specially structured slide gate valve assembly 8. The fixed connection between the discharge mounting port 8-3 and the discharge hopper 9 forms a stable discharge channel. The slide gate slot 8-2 provides a guide track for the slide gate's movement, ensuring the stability of the linear movement of the discharge slide gate 8-4. The symmetrical arrangement of the dual linear drive components 8-1 ensures uniform force distribution on the slide gate, avoiding jamming caused by single-point drive. The sliding fit structure between the discharge slide gate 8-4 and the slide gate slot 8-2 achieves both complete sealing and precise control of the opening volume. The discharge speed can be controlled in stages by adjusting the slide gate insertion depth. The extension and retraction of the linear drive component 8-1 directly acts on the slide gate, significantly improving the opening and closing response speed compared to traditional manual valves. The clearance fit design between the slide gate slot 8-2 and the discharge slide gate 8-4 ensures smooth sliding while effectively preventing small materials from seeping into the gap and causing blockage. The synchronous control design of the two linear drive components 8-1 enhances the synchronicity of the slide gate's movement, ensuring consistent displacement on both sides of the slide gate and avoiding sealing failure due to unilateral jamming.

[0044] Working principle: Specifically, after pretreatment by the crushing device 13, the raw materials enter the mixing drum 10. Two symmetrically arranged agitator ribbon units drive the materials in a bidirectional convective motion. A circulating hot medium is introduced through the second medium pipe 12 to maintain the mixing temperature. The mixed material is precisely controlled by a gate valve to enter the conveying drum 6. The first medium pipe 4 regulates the state of the conveyed material through a cooling medium. The drive device 14 achieves synchronous operation of the crushing, mixing, and conveying processes through a bevel gear pair and pulley drive. The dual-chamber structure of the mounting box 3 creates independent temperature-controlled environments for the mixing and conveying zones. The combination of omnidirectional casters 1 and support legs 2 ensures the stability of the equipment after movement.

Claims

1. A mixing machine for producing solid feed additives, characterized in that: The system includes a support, with several omnidirectional casters (1) and several support feet (2) installed at the bottom of the support; it also includes an installation box (3) installed on the support, with an installation partition (7) fixedly connected inside the installation box (3) to divide its inner cavity into upper and lower chambers, and an insulation layer provided on the inner walls of both the upper and lower chambers; a horizontally arranged stirring drum (10) is provided in the upper chamber of the installation box (3), and a stirring assembly (11) is rotatably connected to the inner cavity of the stirring drum (10), and a medium pipe (12) coiled on the outer wall of the stirring drum (10) and connected to the medium source; the stirring assembly (11) includes a horizontally arranged stirring shaft (11-3) rotatably connected to the stirring drum (10), and two symmetrically arranged stirring ribbon units are installed on the stirring shaft (11-3); a feed inlet is provided at the upper part of the stirring drum (10), and a feed inlet is provided at the feed inlet. The device is equipped with a crushing device (13) installed on the top of the mounting box (3); a discharge port is provided at the bottom of the mixing drum (10), and a discharge hopper (9) is installed at the discharge port, and a gate valve assembly (8) is installed at the discharge port of the discharge hopper (9); a transmission cylinder shell (6) is provided in the lower chamber of the mounting box (3) with its inlet connected to the gate valve assembly (8), and the outer port of the transmission cylinder shell (6) extends to the outside of the mounting box (3); a spiral mixing assembly (5) is provided in the transmission cylinder shell (6) and rotated therewith, and a medium pipe (4) is provided in the lower chamber of the mounting box (3) and coiled around the outer wall of the transmission cylinder shell (6) and connected to the medium source; and a drive device (14) is provided for driving the crushing device (13), the mixing assembly (11) and the spiral mixing assembly (5) to operate synchronously.

2. The mixing machine for producing solid feed additives as described in claim 1, characterized in that: The stirring ribbon unit includes an outer stirring rod mechanism (11-4) and a middle stirring rod mechanism (11-7) respectively installed at the end and middle of the stirring shaft (11-3), and also includes an inner stirring rod mechanism (11-5) installed on the stirring shaft (11-3) between the outer stirring rod mechanism (11-4) and the middle stirring rod mechanism (11-7); a spiral stirring belt one (11-1) and a spiral stirring belt two (11-2) are installed between the outer stirring rod mechanism (11-4) and the inner stirring rod mechanism (11-5), and the spiral stirring belt one (11-1) and the spiral stirring belt two (11-2) are respectively installed between the outer stirring rod mechanism (11-4) and the inner stirring rod mechanism (11-5). 1-2) The stirring shaft (11-3) is arranged symmetrically about the center; between the inner stirring rod mechanism (11-5) and the middle stirring rod mechanism (11-7) are installed spiral stirring belt three (11-6) and spiral stirring belt four (11-8), which are arranged symmetrically about the stirring shaft (11-3); the two spiral stirring belts one (11-1), the two spiral stirring belts two (11-2), the two spiral stirring belts three (11-6) and the two spiral stirring belts four (11-8) are all distributed in a figure-eight shape.

3. The mixing machine for producing solid feed additives as described in claim 2, characterized in that: The outer stirring rod mechanism (11-4), the inner stirring rod mechanism (11-5), and the middle stirring rod mechanism (11-7) have the same structure. They all include two saddle-shaped connectors that are mated together. The two saddle-shaped connectors are detachably connected to the stirring shaft (11-3) by bolts and lock nuts. Connecting rods are fixed to each saddle-shaped connector, and connecting plates for installing spiral stirring belts are installed at the outer ends of each connecting rod.

4. The mixing machine for producing solid feed additives as described in claim 2, characterized in that: Two adjacent stirring rod mechanisms are arranged in a cross shape along the axial direction of the stirring shaft (11-3); the two ends of the first spiral stirring belt (11-1) are detachably connected to the outer ends of the two vertical parts of the outer stirring rod mechanism (11-4) and the inner stirring rod mechanism (11-5); the two ends of the second spiral stirring belt (11-2) are detachably connected to the outer ends of the other two vertical parts of the outer stirring rod mechanism (11-4) and the inner stirring rod mechanism (11-5); the two ends of the first spiral stirring belt (11-1) are detachably connected to the outer ends of the two vertical parts of the inner stirring rod mechanism (11-5) and the middle stirring rod mechanism (11-7); the two ends of the fourth spiral stirring belt (11-8) are detachably connected to the outer ends of the other two vertical parts of the inner stirring rod mechanism (11-5) and the middle stirring rod mechanism (11-7).

5. The mixing machine for producing solid feed additives as described in claim 1, characterized in that: The crushing device (13) includes a crushing box (13-2) installed on the top of the mounting box (3). A flared feed inlet is provided on the top of the crushing box (13-2), and a discharge outlet connected to the feed inlet of the mixing drum (10) is provided at the bottom of the crushing box (13-2). Two sets of crushing roller assemblies are provided inside the crushing box (13-2) and are rotatably connected to it. A drive spur gear (13-1) is keyed to the outer end of each crushing roller assembly, and the two drive spur gears (13-1) mesh with each other.

6. The mixing machine for producing solid feed additives as described in claim 5, characterized in that: The drive unit (14) includes a drive motor (14-7), an output transmission shaft (14-4) connected to the rotating end of the stirring assembly (11) and arranged laterally is mounted on the output shaft of the drive motor (14-7), and a longitudinal transmission shaft (14-2) rotatably connected to the mounting box (3) and arranged longitudinally is also included. A bevel gear pair (14-3) is installed between the upper end of the longitudinal transmission shaft (14-2) and the output transmission shaft (14-4), and a bevel gear pair (14-1) is installed between the lower end of the longitudinal transmission shaft (14-2) and the rotating end of the spiral stirring assembly (5). It also includes a crushing transmission shaft (14-5) installed in one of the two crushing roller assemblies. The crushing transmission shaft (14-5) is arranged laterally, and a pulley transmission pair (14-6) is installed between the crushing transmission shaft (14-5) and the output transmission shaft (14-4).

7. The mixing machine for producing solid feed additives as described in claim 1, characterized in that: The slide gate valve assembly (8) includes a discharge mounting port (8-3) installed at the discharge port of the discharge hopper (9), a slide gate groove (8-2) is provided on the discharge mounting port (8-3), and a discharge slide gate (8-4) for opening and closing the material port of the slide gate valve assembly (8) is slidably inserted in the slide gate groove (8-2). It also includes a linear drive (8-1) installed on the discharge mounting port (8-3), and there are two linear drive (8-1) and the protruding end of each linear drive (8-1) is connected to the discharge slide gate (8-4).

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