A silage processing raw material pretreatment blender

Abstract

The utility model is suitable for agricultural field, specifically relates to a silage feed processing raw material pretreatment stirrer, and pretreatment stirrer includes, frame, the middle welding of frame upper end has stirring tank, first stirring motor is connected with first stirring shaft, second stirring motor is connected with second stirring shaft, the upper end of stirring tank is fixed with the protection cover through the pivot, is equipped with a plurality of through -hole on the upper end of protection cover, inlaying has the powder inlet channel in the through -hole, the powder inlet channel is linked with the fermentation powder jar, the utility model discloses a double -motor drive double -shaft opposition, reverse rotation mechanical structure is adopted to the rigid strength is enhanced in combination with the middle fixed plate bearing support, and the strong convection shear zone that traditional single -shaft equipment cannot realize is created in the central area of jar body in this stirrer, this makes the trace additive such as fermentation powder can be dispersed to each corner of a large number of silage raw materials rapidly and evenly, not only improves the mixing quality and efficiency, also lays a solid foundation for the success of subsequent silage fermentation.

Description

Technical Field

[0001] This utility model belongs to the field of agriculture, specifically relating to a pretreatment mixer for silage feed processing raw materials. Background Technology

[0002] In animal husbandry, silage is a common type of livestock feed. It is mainly made from green corn. Combine harvesters are usually used to harvest and crush the green corn stalks. Before being processed into feed, it needs to undergo steps such as filtration, air drying, and fermentation. Before fermentation, baking powder needs to be added to the feed to allow it to ferment.

[0003] The original method involved directly laying straw in a pit, layering straw with a layer of yeast. The thickness of the straw and yeast mixture required considerable experience from the workers, and the uneven distribution of the straw and yeast resulted in poor fermentation. The current equipment addresses this by throwing the materials and yeast into a mixing tank. However, in practice, the mixing tank's narrow top and bottom create dead zones, leading to uneven mixing of the straw and yeast, which negatively impacts subsequent fermentation efficiency and quality.

[0004] In summary, there is an urgent need for a new pretreatment mixer for silage feed processing raw materials to solve the problem of uneven mixing of yeast and straw in existing straw raw material mixing yeast. Utility Model Content

[0005] This utility model provides a pretreatment mixer for silage processing raw materials, which aims to solve the problem of uneven mixing of yeast and straw raw materials in existing straw raw material mixed yeast powder.

[0006] The present invention is implemented as follows: A pretreatment mixer for silage processing raw materials includes: The frame has a mixing tank welded to the middle of the upper end. A first stirring motor and a second stirring motor are respectively installed on both sides of the mixing tank. The first stirring motor is connected to a first stirring shaft, and the second stirring motor is connected to a second stirring shaft. The ends of the first stirring shaft and the second stirring shaft that are close to each other are connected to a fixed plate through bearings. The two ends of the fixed plate are respectively connected to the front and rear inner walls of the mixing tank. The upper end of the mixing tank is fixed with a protective cover by a rotating shaft. The upper end of the protective cover is provided with multiple through holes, and powder inlet channels are embedded in the through holes. The powder inlet channels are connected to the yeast tank. The mixing tank is equipped with a discharge port at the bottom, and a discharge cover is fixed outside the discharge port. The front end of the discharge cover is connected to a telescopic rod. The first and second stirring shafts are coaxial, and stirring paddles are fixed on the first and second stirring shafts.

[0007] Furthermore, the first and second stirring motors are each fixed with an encoder, which is linearly connected to the PLC controller, and the first and second stirring motors rotate in opposite directions.

[0008] Furthermore, the upper end of the mixing tank is provided with an extension frame, and a protective plate is provided around the extension frame. The extension frame at the front end of the mixing tank is a movable frame, which is fixedly connected to the mixing tank through a rotating shaft. The upper end of the movable frame is provided with a fixing buckle.

[0009] The beneficial effects achieved by this utility model are: This invention employs a dual-motor driven, dual-shaft, counter-rotating mechanical structure, combined with a central fixed plate bearing support to enhance rigidity. This creates a strong convection shear zone in the central area of ​​the tank, which is impossible with traditional single-shaft equipment. This allows trace additives such as baking powder to be rapidly and evenly dispersed to every corner of the large quantity of silage material, fundamentally solving the process problems of uneven mixing and dead zones. It not only improves mixing quality and efficiency but also lays a solid foundation for successful subsequent silage fermentation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the pretreatment mixer for silage processing raw materials provided by this utility model; Figure 2 This is a schematic diagram of the structure of the protective cover of the pretreatment mixer of this utility model; Figure 3 This is a schematic diagram of the discharge port structure of this utility model.

[0011] Icon labels: 100. Pretreatment mixer; 101. Frame; 102. Mixing tank; 103. First mixing motor; 104. Second mixing motor; 105. First mixing shaft; 106. Second mixing shaft; 107. Fixing plate; 108. Protective cover; 109. Powder inlet channel; 110. Discharge cover; 111. Telescopic rod; 112. Mixing paddle; 113. Encoder; 114. Extension frame; 115. Movable frame; 116. Fixing latch; 117. Protective plate. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0013] This invention employs a dual-motor driven, dual-shaft, counter-rotating mechanical structure, combined with a central fixed plate bearing support to enhance rigidity. This creates a strong convection shear zone in the central area of ​​the tank, which is impossible with traditional single-shaft equipment. This allows trace additives such as baking powder to be rapidly and evenly dispersed to every corner of the large quantity of silage material, fundamentally solving the process problems of uneven mixing and dead zones. It not only improves mixing quality and efficiency but also lays a solid foundation for successful subsequent silage fermentation.

[0014] Reference Figures 1-3 In this embodiment of the present invention, a pretreatment mixer for silage processing raw materials is provided, comprising: a frame 101, a mixing tank 102 welded to the middle of the upper end of the frame 101, a first mixing motor 103 and a second mixing motor 104 respectively fixed on the frame 101 on both sides of the mixing tank 102, the output shaft of the first mixing motor 103 being connected to a first mixing shaft 105 extending into the mixing tank 102 via a coupling, the output shaft of the second mixing motor 104 being connected to a second mixing shaft 106 extending into the mixing tank 102 via a coupling, the ends of the first mixing shaft 105 and the second mixing shaft 106 inside the mixing tank 102 being connected to a fixed plate 107 via bearings, and the two ends of the fixed plate 107 being welded to the front and rear inner walls of the mixing tank 102 respectively; A hinged protective cover 108 is fixed to one side of the upper end of the mixing tank 102 via a hinge and a rotating shaft. The upper end of the protective cover 108 has multiple through holes, and each through hole is fitted with a powder inlet channel 109. The upper end of the powder inlet channel 109 is connected to an external fermentation powder tank via a hose. The bottom end of the tapered part of the lower end of the mixing tank 102 is provided with a discharge port. A discharge cover 110 is fixed to the outside of the discharge port via a flange. The front end of the discharge cover 110 is hinged to the piston rod end of a horizontally set telescopic rod 111. The first stirring shaft 105 and the second stirring shaft 106 are located on the same axis, and multiple stirring paddles 112 are fixed at intervals on the shafts of the first stirring shaft 105 and the second stirring shaft 106.

[0015] During silage processing, chopped straw and other raw materials need to be thoroughly and evenly mixed with powdered materials such as yeast and nutrient additives. Traditional single-shaft mixers have low mixing efficiency and easily create mixing dead zones in the middle of the tank, resulting in uneven distribution of yeast and affecting the overall fermentation quality and nutritional value of the silage. Existing solutions usually involve extending the mixing time or manually assisting in turning, but this reduces production efficiency and increases energy consumption and labor costs.

[0016] In this embodiment, the pretreatment mixer 100 for silage processing adopts a dual-shaft opposed and counter-rotating design, which aims to enhance the convection and shearing effect in the mixing tank 102, realize the rapid and uniform mixing of raw materials and powder, and solve the core problem of uneven mixing.

[0017] Specifically, in this embodiment, the frame 101 is a rectangular frame structure welded from channel steel or square steel, providing stable support for the entire device. The mixing tank 102 is semi-cylindrical, with an extension frame 114 at the upper end of the semi-cylindrical. The mixing tank 102 is fixed to the center of the upper end face of the frame 101 by welding reinforcing ribs or support seats on its outer wall.

[0018] The first stirring motor 103 and the second stirring motor 104 are geared motors or variable frequency motors. The first stirring motor 103 and the second stirring motor 104 are respectively fixed to the frame 101 via motor mounting brackets and are located on both sides of the mixing tank 102. The first stirring shaft 105 and the second stirring shaft 106 extend into the tank from shaft holes on both sides of the mixing tank 102, and mechanical seals are provided at the shaft holes to prevent material leakage. The two stirring shafts are arranged opposite each other in the central area inside the tank, and their ends are supported by a deep groove ball bearing or a self-aligning bearing on the same fixed plate 107. The fixed plate 107 is a rectangular steel plate, and its left and right ends are fully welded to the front and rear inner walls of the mixing tank 102, forming a rigid intermediate support for the ends of the two stirring shafts. This design makes the operation of the two long stirring shafts more stable, reduces shaft end deflection, and avoids vibration and deformation caused by excessive shaft length under high-speed stirring.

[0019] Multiple sets of agitator blades 112 are welded to or fixed via keyways on the first agitator shaft 105 and the second agitator shaft 106. The blades of the agitator blades 112 can be designed in various forms, such as paddle blades, spiral ribbons, or axe blades, and are arranged in a staggered pattern along the axial direction. Crucially, through a control system, the first agitator motor 103 and the second agitator motor 104 rotate in opposite directions. When they operate simultaneously, the blades on the first agitator shaft 105 push the material in one direction, while the blades on the second agitator shaft 106 push the material in the opposite direction, thereby creating a strong convection, impact, and shear flow field in the central region of the mixing tank 102. This effectively breaks up raw material agglomerates and allows the yeast to rapidly diffuse and penetrate, eliminating the central mixing dead zone of single-shaft agitation.

[0020] The protective cover 108 is hinged to an extension frame 114 on top of the mixing tank 102 for easy feeding and maintenance. Multiple powder inlet channels 109 are evenly distributed on the protective cover 108. Each powder inlet channel 109 is essentially a short pipe connector, with its lower opening located inside the mixing tank 102 and its upper end connected via a flexible pipeline to a unified yeast storage and conveying system (such as a yeast tank and its metering feeder below). When yeast needs to be added, the feeder is activated, and the powder is evenly sprayed through these channels onto the surface of the tumbling raw materials, facilitating rapid dispersion.

[0021] The discharge mechanism consists of a discharge cover 110 and a telescopic rod 111. The discharge cover 110, like a gate, is mounted on the flange of the discharge port via a pin. The telescopic rod 111 can be a hydraulic cylinder or an electric push rod, with its cylinder body fixed to the support leg of the frame 101 or the bottom of the mixing tank 102. When discharge is required, the telescopic rod 111 retracts under a control signal, pulling the discharge cover 110 to connect the discharge port with the mixing tank, allowing the mixed material to be discharged. After discharge, the telescopic rod 111 extends, pushing the discharge cover 110 back and sealing the mixing tank 102.

[0022] Based on the above structure, when the mixer 100 is working, the protective cover 108 is first opened, and the chopped silage material (such as corn stalks) is put into the mixing tank 102 to the predetermined capacity. After closing the protective cover 108, the first mixing motor 103 and the second mixing motor 104 are started, which drive the first mixing shaft 105 and the second mixing shaft 106 to start rotating in opposite directions. The material in the tank is violently agitated by the mixing paddle 112. At this time, the yeast conveying system is started, and the yeast is quantitatively and evenly blown into the tank through each powder inlet channel 109, falling into the high-speed moving material flow. Due to the strong three-dimensional turbulence formed by the dual-shaft counter-mixing, the powder is instantly wrapped by the material and carried in all directions, achieving multi-level, high-intensity mixing of solid-solid two-phase materials in a very short time. The mixing process can be carried out in a closed environment, reducing dust emission. After uniform mixing, the mixing motor is stopped, and the telescopic rod 111 is controlled to open the discharge cover 110. The material is quickly discharged under gravity, completing the pretreatment of one batch.

[0023] By employing a mechanical structure with dual motors driving dual opposing and counter-rotating shafts, combined with a central fixed plate bearing support to enhance rigidity, this agitator creates a strong convection shear zone in the central area of ​​the tank that is impossible to achieve with traditional single-shaft equipment. This allows trace additives such as baking powder to be rapidly and evenly dispersed to every corner of the large quantity of silage raw materials, fundamentally solving the process problems of uneven mixing and dead zones. This not only improves mixing quality and efficiency but also lays a solid foundation for the successful subsequent silage fermentation.

[0024] Example 2 See Figure 1 and Figure 3 In this embodiment of the invention, encoders 113 are fixedly mounted at the tail ends of both the first stirring motor 103 and the second stirring motor 104. These encoders 113 are rotary encoders, used to provide real-time and accurate feedback on the speed and rotation angle of the corresponding motors. The signal output lines of both encoders 113 are linearly connected to a centralized PLC controller. The PLC controller has a pre-programmed control program that can receive feedback signals from the encoders 113 and issue drive commands to the first stirring motor 103 and the second stirring motor 104.

[0025] Based on the above structure, encoder 113 and PLC controller form a closed-loop control system. Operators can set the target speed of the two stirring shafts through the human-machine interface. The PLC controller compares the actual speed feedback from encoder 113 with the set value, and dynamically adjusts the current or frequency output to the motors using algorithms such as PID, ensuring that the first stirring motor 103 and the second stirring motor 104 always operate at the set, stable speed, and strictly maintain a logical relationship of opposite rotation directions. This precise control ensures the stability and repeatability of the stirring flow field, maintaining optimal mixing intensity regardless of load changes. Furthermore, the PLC controller can preset the stirring time, achieve automatic start / stop, monitor the motor operating status, and issue alarms in case of overload or abnormality, improving the automation level and reliability of the equipment.

[0026] Example 3 See Figure 1 and Figure 3 In this embodiment of the invention, an upwardly extending extension frame 114 is welded to the upper edge of the mixing tank 102. A vertical guard plate 117 is fixed around the extension frame 114, forming a raised enclosure to prevent small amounts of material from splashing out of the tank during high-speed mixing. Specifically, the portion of the extension frame and guard plate located directly in front of the mixing tank 102 is designed as a movable frame 115. The lower end of the movable frame 115 is hinged to the mixing tank 102 or the extension frame of the fixed portion via a horizontal pivot, allowing the entire movable frame 115 to be laid down outwards or pulled upwards. When the movable frame 115 is in the upright working position, a fixing latch 116 is provided at its upper end, which, by cooperating with the locking seat on the adjacent fixed frame, securely locks the movable frame 115.

[0027] Based on the above structure, the extension frame 114 and the protective plate 117 enhance the sealing safety of the equipment. The openable and closable movable frame 115 greatly facilitates operation and maintenance. When it is necessary to observe the mixing situation inside the tank, perform manual auxiliary feeding (such as adding large auxiliary raw materials), or clean and maintain the inner wall of the mixing tank 102 and the mixing shaft, simply open the fixing latch 116 to lower the movable frame 115 along with the protective plate, opening a wide passage to the upper part of the mixing tank 102 and providing ample operating space without disassembling the entire top cover structure. This significantly improves the practicality and maintainability of the equipment.

[0028] In the description of this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Furthermore, the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pretreatment mixer for silage processing raw materials, characterized in that, include: The frame has a mixing tank welded to the middle of the upper end. A first stirring motor and a second stirring motor are respectively installed on both sides of the mixing tank. The first stirring motor is connected to a first stirring shaft, and the second stirring motor is connected to a second stirring shaft. The ends of the first stirring shaft and the second stirring shaft that are close to each other are connected to a fixed plate through bearings. The two ends of the fixed plate are respectively connected to the front and rear inner walls of the mixing tank. The upper end of the mixing tank is fixed with a protective cover by a rotating shaft. The upper end of the protective cover is provided with multiple through holes, and powder inlet channels are embedded in the through holes. The powder inlet channels are connected to the yeast tank. The mixing tank is equipped with a discharge port at the bottom, and a discharge cover is fixed outside the discharge port. The front end of the discharge cover is connected to a telescopic rod. The first and second stirring shafts are coaxial, and stirring paddles are fixed on the first and second stirring shafts.

2. The silage processing raw material pretreatment mixer according to claim 1, characterized in that, The first and second stirring motors are respectively fixed with encoders, which are linearly connected to the PLC controller. The first and second stirring motors rotate in opposite directions.

3. The silage processing raw material pretreatment mixer according to claim 1, characterized in that, The mixing tank is equipped with an extension frame at the upper end, and a protective plate is provided around the extension frame. The extension frame at the front end of the mixing tank is a movable frame, which is fixedly connected to the mixing tank through a rotating shaft. A fixing lock is provided at the upper end of the movable frame.

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