A miniature straw residue pelletizing CNC benchtop device

Abstract

This utility model discloses a micro-sized CNC tabletop device for granulating straw residue, belonging to the granulation device category. It includes a machine body with a feed inlet, a crushing box, a granulation box, and a collection trough. The crushing box has a crushing chamber, connected to the feed inlet. A crushing shaft is located within the crushing chamber and is connected to a motor via a transmission mechanism. The granulation box has an extrusion chamber connected to the crushing chamber, in which a screw shaft is rotatably mounted. The screw shaft is connected to a motor via a transmission mechanism. A granulation mold is located at the end of the extrusion chamber, and a hydraulic buffer device is installed between the screw shaft and the granulation mold. The discharge end of the granulation mold is connected to the collection trough. A CNC display device is located on one side of the machine body, and its output is electrically connected to both motors via a motor speed controller. This utility model not only effectively controls the uniformity of granulation but also provides support for the future utilization of other straw residue resources.

Description

Technical Field

[0001] This utility model relates to a pelletizing device, and more particularly to a micro-sized CNC tabletop device for pelletizing straw residue. Background Technology

[0002] With the development of the traditional Chinese medicine (TCM) industry, the demand for TCM is increasing year by year, resulting in a massive amount of TCM residue, with annual emissions reaching 30-70 million tons. This residue is rich in nutrients, including protein, polysaccharides, and minerals. Furthermore, Guangxi is a major sugarcane-growing province in China, producing over 10 million tons of sugarcane tops annually. After sugar extraction, sugarcane residue and other waste products remain. If these straw and residues are not recycled and utilized, these valuable nutrients will be wasted. However, if they can be rationally developed and utilized as feed, not only can resource waste be reduced, but the nutritional needs of livestock and poultry can also be met, lowering feeding costs for enterprises or farmers and increasing economic benefits.

[0003] For example, a high-efficiency crop straw pelletizing device disclosed in patent number CN218359109U includes a shell, a feeding hopper fixedly connected to the shell, a straw crushing device above the feeding hopper, a cylindrical barrel fixedly connected inside the shell, a feeding port on the side of the cylindrical barrel, a screw extrusion device inside the cylindrical barrel, and a forming perforated plate installed at the output end of the screw extrusion device corresponding to the side of the cylindrical barrel. In use, material falling from above falls onto a guide plate, then slides down the guide plate and enters the cylindrical barrel through the feeding port. The screw extrusion device is activated, pressing the material falling into the cylindrical barrel and forming it to exit through the forming perforated plate. When the material falls onto the guide plate, the collision with the guide plate causes the guide plate to drive a swing shaft to rotate. The swing shaft, constrained by a torsion spring, causes the guide plate to swing, thus preventing material adhesion and waste.

[0004] However, the materials entering the granulation unit must first undergo a crushing process before being transported to the granulation device. Many large granulation devices on the market currently employ this design. Furthermore, their feeding system, coupled with a feeder, ensures uniform feeding and consistent granulation. However, these large-scale devices are unsuitable for research platforms. The discontinuous process and inconsistent feeding both hinder the quality of granulation in research experiments. Therefore, to further optimize the granulation process and simplify the granulation technique, research platforms require a smaller-scale device similar to those used in production for granulating medicinal herb residues and other straw resources. Thus, this proposal, to facilitate research work, designs a CNC benchtop granulation device based on straw residues. Utility Model Content

[0005] This invention proposes a miniature straw dregs pelletizing CNC tabletop device, which can not only effectively control the uniformity of pelletizing, but also provides support for the future utilization of other straw dregs resources.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a micro-sized straw dregs pelletizing CNC tabletop device, comprising a machine body, wherein the machine body is provided with a feed inlet, a crushing box, a pelletizing box, and a collection trough arranged sequentially from top to bottom; the crushing box is provided with a crushing chamber, the feed inlet is connected to the crushing chamber, the crushing chamber is provided with a crushing shaft, the crushing shaft is driven and connected to a motor through a transmission mechanism; the pelletizing box is provided with an extrusion chamber connected to the crushing chamber, a screw shaft is rotatably installed in the extrusion chamber, the screw shaft is driven and connected to a motor through a transmission mechanism, a pelletizing mold is provided at the end of the extrusion chamber, a hydraulic buffer device is installed between the screw shaft and the pelletizing mold, and the discharge end of the pelletizing mold is connected to the collection trough; a CNC display device is provided on one side of the machine body, and the output end of the CNC display device is electrically connected to motor one and motor two respectively through a motor speed controller.

[0007] Preferably, the hydraulic buffer device includes a hydraulic buffer and a pressure plate; the pressure plate has a sleeve hole, the pressure plate is sleeved on the outside of the extrusion chamber, and the pressure plate is slidably connected to the extrusion chamber; a hydraulic buffer is installed on the outside of the extrusion chamber, and the piston end of the hydraulic buffer is connected to the pressure plate.

[0008] Preferably, a material storage cavity is provided between the pressure plate and the granulation mold.

[0009] Preferably, a crushing blade is fixed around the periphery of the crushing shaft, and the crushing blade is a 360° spiral double-edged blade with alternating long and short blades.

[0010] Preferably, a grinding barrel is fixedly installed in the grinding box, and the inner cavity of the grinding barrel is a grinding chamber.

[0011] Preferably, the crushing barrel is made of stainless steel.

[0012] Preferably, the upper part of the crushing barrel is an open structure, and a viewing window is provided on the side wall of the crushing box, with tempered glass installed in the viewing window.

[0013] Preferably, the collection trough is arranged at an angle downwards.

[0014] Preferably, a power switch and a running indicator light are provided on one side of the machine body.

[0015] By adopting the above technical solution, this utility model has the following beneficial effects:

[0016] 1. The machine body is equipped with a feed inlet, crushing box, pelleting box and collection tank arranged from top to bottom, realizing an integrated pelleting process. There is no need to handle materials. Moreover, the components are arranged from top to bottom according to the sequence of the pelleting process, realizing mutual cooperation between the components and forming a complete straw dregs pelleting process. Except for feeding, there is no need for much manual intervention, which is more conducive to the conduct of experimental research.

[0017] 2. A hydraulic buffer and pressure plate are installed between the screw shaft and the pelletizing die. Through their buffering effect, a more uniform extrusion force is provided, which can effectively control the uniformity of pelleting. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the CNC benchtop device for micro straw dregs pelletizing proposed in Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the machine body proposed in Embodiment 1 of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the crushing box proposed in Embodiment 1 of this utility model.

[0021] Figure 4 This is a top view of the crushing shaft structure proposed in Embodiment 1 of this utility model.

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the spiral shaft, pressure plate, and granulation mold proposed in Embodiment 1 of this utility model.

[0023] Figure 6 This is a schematic diagram of the front structure of the granulation mold proposed in Embodiment 1 of this utility model.

[0024] The components in the attached diagram are labeled as follows: 1-Machine body, 2-Feed inlet, 3-Grinding box, 4-Pelletizing box, 5-Collection tank, 6-Grinding chamber, 7-Grinding shaft, 8-Motor 1, 9-Extrusion chamber, 10-Screw shaft, 11-Motor 2, 12-Pelletizing mold, 13-CNC display device, 14-Hydraulic buffer, 15-Pressure plate, 16-Storage chamber, 17-Grinding blade, 18-Grinding barrel, 19-Viewing window, 20-Power switch, 21-Running indicator light. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0026] like Figure 1-6 As shown, a micro-sized CNC benchtop device for granulating straw residue includes a body 1. The body 1 contains a feed inlet 2, a crushing box 3, a granulation box 4, and a collection trough 5, arranged sequentially from top to bottom. The feed inlet 2 is a bucket-shaped feeding structure, primarily used to feed straw residue, which automatically falls into the crushing box 3. The crushing box 3 is used to crush the straw residue. The crushed straw residue then enters the granulation box 4. The granulation box 4 is used to granulate the crushed straw residue. The resulting granules fall into the collection trough 5, where they are collected via a conveying mechanism. The body 1 integrates feeding, crushing, granulation, and collection functions, achieving a unified granulation process. This eliminates the need for material handling, and the components are arranged from top to bottom according to the granulation sequence, enabling mutual assistance between components and forming a complete straw residue granulation process. Except for feeding, minimal manual intervention is required, which is more conducive to experimental research.

[0027] The specific structures of the crushing box 3, the granulation box 4, and the collection tank 5 will be described below.

[0028] like Figure 2-3 As shown, the crushing box 3 has a crushing chamber 6. Specifically, a crushing barrel 18 is fixedly installed in the crushing box 3, and the inner cavity of the crushing barrel 18 is the crushing chamber 6. The crushing box 3 is a square box, while the crushing barrel 18 is circular. In addition, the crushing barrel 18 is made of stainless steel, which can resist the wear and corrosion of materials and is easy to clean and disinfect. The top of the crushing barrel 18 is an open structure, and a viewing window 19 is opened on the side wall of the crushing box 3. The viewing window 19 is fitted with tempered glass to facilitate observation of the crushing of straw residue in the crushing chamber 6. The feed inlet 2 is connected to the crushing chamber 6, and a crushing shaft 7 is installed in the crushing chamber 6. Specifically, a cross bracket is fixed in the crushing box 3, and the crushing shaft 7 is rotatably installed in the cross bracket through bearings, extending into the crushing chamber 6. Crushing blades 17 are fixed around the crushing shaft 7. The crushing blades 17 are composed of multiple long and short staggered blades with a 360° spiral double edge, which can provide better cutting and crushing effect. Figure 3 As shown in the figure, the shredder 17 is composed of multiple alternating long and short blades with a spiral double-edged design. The specific structure of the spiral double-edged design is described in... Figure 3 The details are not shown in the diagram; please refer to the blade body structure of currently available helical double-person cutting tools on the market for specific examples. Figure 4As shown, the blades of the pulverizing blade 7 are arranged in a 360° pattern around the pulverizing shaft 7, ultimately forming a pulverizing blade 17 with multiple staggered long and short blades in a 360° spiral double-edged configuration. The pulverizing shaft 7 is connected to a motor 8 via a transmission mechanism. In this embodiment, the transmission mechanism is a chain drive. Both the motor 8 and the transmission mechanism are installed inside the pulverizing chamber 3 to avoid potential hazards caused by exposed transmission components. The motor 8 drives the pulverizing shaft 7 to rotate via the transmission mechanism, thereby pulverizing the straw residue.

[0029] like Figure 2 and Figure 5 As shown, the pelleting box 4 is equipped with an extrusion chamber 9 that communicates with the crushing chamber 6. These two chambers are connected by a pipe. A screw shaft 10 is rotatably mounted in the extrusion chamber 9, which is used to convey the crushed straw residue. Figure 2 The spiral shaft 10 in the middle is in the longitudinal direction, and its visible surface is the end face of one end; Figure 5 This is a cross-sectional schematic diagram of the spiral shaft 10. The spiral shaft 10 is connected to a motor 11 via a transmission mechanism 2. The transmission mechanism 2 is a chain drive mechanism. A granulation mold 12 is provided at the end of the extrusion chamber 9, the specific structure of which is shown below. Figure 6 As shown, the material continuously conveyed by the screw shaft 10 is compressed, allowing it to pass through the through-hole of the granulation mold 12 to achieve extrusion molding, thereby forming granules. The discharge end of the granulation mold 12 is connected to the collection tank 5, and a collection bucket can be placed below the collection tank 5 for collecting the granulated particles.

[0030] Due to discontinuous manual feeding or other factors during the experiment, the material conveyed by the screw shaft 10 may be uneven. When there is a large amount of material, the discharge is fast and the particles are long, while when there is a small amount of material, the discharge is slow and the particles are short, resulting in uneven particle size. To solve this problem, this invention employs a hydraulic buffer device installed between the screw shaft 10 and the granulation mold 12. Through its buffering effect, a more uniform extrusion force is provided, which can effectively control the uniformity of granulation.

[0031] In this embodiment, the hydraulic buffer device includes a hydraulic buffer 14 and a pressure plate 15. The pressure plate 15 has a sleeve hole and is fitted onto the outside of the extrusion chamber 9, with the pressure plate 15 slidably connected to the extrusion chamber 9. The hydraulic buffer 14 is installed on the outside of the extrusion chamber 9, and the piston end of the hydraulic buffer 14 is connected to the pressure plate 15. Furthermore, a storage chamber 16 is provided between the pressure plate 15 and the granulation mold 12, with the pressure plate 15 extending into the storage chamber 16. After the material fills the storage chamber 16, as the material continues to increase, the later-entering material will squeeze the original material in the storage chamber 16, causing the material to be squeezed towards the granulation mold 12 to begin granulation. During this process, if the amount of material transmitted by the screw shaft 10 is uniform, the state of the hydraulic buffer 14 and the pressure plate 15 remains unchanged. When the amount of material transmitted by the screw shaft 10 increases, the amount of material in the storage chamber 16 increases, thereby increasing the extrusion pressure of the material on the pressure plate 15 and the granulation mold 12. At this time, the piston of the hydraulic buffer 14 contracts, causing the pressure plate 15 to move away from the granulation mold 12, thereby increasing the volume of the storage chamber 16. This buffers and relieves the sudden increase in extrusion pressure, maintaining the material extrusion pressure balance and ensuring uniform particle size after granulation. It should be noted that after granulation, a certain amount of material remains in the storage chamber 16. This material needs to be removed. Removal is mainly achieved by opening the door of the machine body 1 and the door of the storage chamber 16. After cleaning, the doors should be locked again.

[0032] In this embodiment, a numerical control display device 13 is provided on one side of the machine body 1, which can specifically be a touch screen integrated machine. The numerical control display device 13 is the core control component of this device, which can be used to display various operating parameters of the pelletizing device, such as rotation speed, temperature, pellet output, and pellet size. The numerical control display device 13 also has a memory device for storing relevant data, such as historical operating data, which can help retrieve information, facilitate experimental analysis, and improve operational efficiency; it can also control the rotation speed of the crushing shaft 7, and its specific connection structure is as follows: the output end of the numerical control display device 13 is electrically connected to motor 8 and motor 11 respectively through a motor speed controller, thereby realizing the speed regulation of the two motors. For example, through the operation of the numerical control display device 13, the rotation speed of the motor can be controlled, with rotation speed ranges of 1000, 1500, 2000, 2500 and 3000 rpm, which can adapt to straw of different hardness. Furthermore, the CNC display device 13 can also set the particle size, with a setting range of 1-10mm for graded adjustment. For example, by controlling the rotation speed of motor 11, the material conveying speed can be controlled, thereby controlling the extrusion pressure and achieving the purpose of particle size control. It should be noted that since the aperture size of the granulation mold 12 is fixed, the aforementioned particle size refers to the dimension between the two cross-sectional layers when the particle automatically breaks during extrusion. The faster the rotation speed of motor 11, the faster the material conveying speed and the larger the particle size; conversely, the slower the rotation speed, the smaller the particle size.

[0033] A power switch 20 and a running indicator light 21 are provided on one side of the machine body 1. When the power switch 20 is turned on, the equipment is powered on, the running indicator light 21 is lit, and the motor is started by the CNC display device 13 to make the equipment run.

[0034] In this embodiment, the collecting trough 5 is arranged at an angle downwards, which is beneficial for the transfer of particles, allowing them to automatically flow into the collecting bucket below the collecting trough 5.

[0035] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A CNC benchtop device for pelletizing miniature straw residue, characterized in that: The machine includes a body (1), which has a feed inlet (2), a crushing box (3), a granulation box (4), and a collection tank (5) arranged from top to bottom. The crushing box (3) has a crushing chamber (6), and the feed inlet (2) is connected to the crushing chamber (6). The crushing chamber (6) has a crushing shaft (7), which is connected to a motor (8) via a transmission mechanism. The granulation box (4) has an extrusion chamber (9) connected to the crushing chamber (6), and a motor (8) is rotatably installed in the extrusion chamber (9). The spiral shaft (10) is connected to the second motor (11) via the second transmission mechanism. The end of the extrusion chamber (9) is provided with a granulation mold (12). A hydraulic buffer device is installed between the spiral shaft (10) and the granulation mold (12). The discharge end of the granulation mold (12) is connected to the collection trough (5). A numerical control display device (13) is provided on one side of the machine body (1). The output end of the numerical control display device (13) is electrically connected to the first motor (8) and the second motor (11) respectively via a motor speed controller.

2. The CNC benchtop device for micro-sized straw dregs pelletizing according to claim 1, characterized in that: The hydraulic buffer device includes a hydraulic buffer (14) and a pressure plate (15); the pressure plate (15) has a sleeve hole, the pressure plate (15) is sleeved on the outside of the extrusion chamber (9), and the pressure plate (15) is slidably connected to the extrusion chamber (9). The hydraulic buffer (14) is installed on the outside of the extrusion chamber (9), and the piston end of the hydraulic buffer (14) is connected to the pressure plate (15).

3. The micro type straw dreg granulation numerical control table type device according to claim 2, characterized in that: A material storage chamber (16) is provided between the pressure plate (15) and the granulation mold (12).

4. The micro type straw dreg granulation numerical control table type device according to claim 1, characterized in that: The crushing shaft (7) is fixed with a crushing blade (17) on its periphery. The crushing blade (17) is a 360° spiral double-edged blade with alternating long and short blades.

5. The micro type straw dreg granulation numerical control table type device according to claim 1, characterized in that: The crushing box (3) is fixedly installed with a crushing barrel (18), and the inner cavity of the crushing barrel (18) is a crushing chamber (6).

6. The micro type straw dreg granulation numerical control table type device according to claim 5, characterized in that: The crushing barrel (18) is made of stainless steel.

7. The CNC benchtop device for micro-sized straw dregs pelletizing according to claim 6, characterized in that: The upper part of the crushing barrel (18) is an open structure, and a viewing window (19) is provided on the side wall of the crushing box (3), and tempered glass is installed in the viewing window (19).

8. The micro type straw dreg granulation numerical control table type device according to claim 1, characterized in that: The collection trough (5) is arranged at an angle downwards.

9. The micro type straw dreg granulation numerical control table type device according to claim 1, characterized in that: A power switch (20) and a running indicator light (21) are provided on one side of the machine body (1).

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