Raw material crushing device based on microparticle bone repair material

Abstract

The invention relates to the technical field of crushing devices, and discloses a raw material crushing device based on a microparticle bone repair material, the raw material crushing device comprises a crushing cavity and a crushing roller, a plurality of groups of temperature sensors are uniformly distributed in the crushing cavity, and a cooling medium circulates in a circulating pipe shaft and a circulating pipeline; and the controller adjusts the circulating flow of the cooling medium according to the temperature of the raw materials in the crushing cavity. The cooling medium flow is intelligently regulated and controlled based on the temperature of the raw materials, the crushing operation temperature can be accurately controlled, the biological activity of the bone repair material is prevented from being damaged by heat generated by friction, and the product quality of the microparticle raw materials is guaranteed; the crushing roller and the toothed plate are respectively provided with a cooling medium circulation structure, so that targeted cooling of the core crushing part is realized, the heat exchange efficiency is higher, and the temperature control is more accurate; and the crushing structure and the temperature control structure work cooperatively, so that raw materials are effectively protected while the crushing efficiency of the microparticle bone repair material is ensured, and the special crushing requirement of the microparticle bone repair material is met.

Description

Technical Field

[0001] This invention relates to the field of pulverizing equipment technology, and specifically to a raw material pulverizing device based on microparticle bone repair materials. Background Technology

[0002] Oral bone defect repair is a core clinical need in oral and maxillofacial surgery, implantology, and other fields. Procedures such as guided bone regeneration (GBR), immediate implantation, maxillary sinus lift, extraction site preservation, traumatic bone defect repair, and bone augmentation all require highly compatible bone repair materials to achieve precise repair and accelerated bone healing. Currently, osteoinductively active material (OAM) made from calf bone is a novel active biological bone repair material, pioneered both domestically and internationally. By incorporating bioactive bone mineral polymers (BMPs) into a natural bone matrix that closely resembles human bone structure, it can simultaneously achieve quantitative supplementation of exogenous BMPs and supply of essential scaffold materials during osteogenesis, achieving a clinical effect of simultaneous absorption and osteogenesis. It has become one of the preferred materials for oral bone defect repair. The precision of the particle size distribution of the raw material, the retention rate of bioactivity, and the cleanliness and efficiency of the grinding process directly determine the clinical application effect of the bone repair material. However, most existing pulverizing devices are general industrial pulverizing equipment, which have not been structurally optimized for the special needs of medical microparticle bone repair materials. They generally suffer from problems such as insufficient particle size control precision, easy deactivation of bioactive components such as BMP due to frictional heat during the pulverizing process, easy adhesion of natural bone matrix raw materials to the pulverizing parts causing material blockage, and low pulverizing efficiency, making it difficult to meet the production requirements of oral medical bone repair materials.

[0003] A prior art pulverizing device for producing microparticle bone repair materials, application number CN202420401183.7, relates to the field of bone repair material production technology. It includes a pulverizing barrel with fixed liners on both inner walls. Movable liners are located inside the fixed liners, and both the fixed and movable liners are inclined. This invention, by setting up a pulverizing barrel with fixed and movable liners inside, and these liners being inclined relative to each other, allows the movable liners to reciprocate up-and-down on one side of the fixed liners during raw material pulverization. The material is pulverized by vibration and compression during this circulation, and the pulverized material can freely fall to the bottom of the device and be discharged, thus enabling continuous material processing and improving the pulverizing efficiency of the device.

[0004] However, existing technologies, especially this particular solution, still have the following problems: The existing technology suffers from a fixed and unadjustable crushing gap, poor material compatibility, and insufficient particle size precision. It achieves vibrational crushing through the reciprocating motion of a movable and a fixed liner, with a fixed relative gap that cannot be dynamically adjusted based on the hardness differences of bone repair materials. With harder materials, excessive compression can damage the porous structure of the natural bone matrix, affecting the performance of the subsequent osteogenic scaffold. With softer materials, insufficient compression leads to incomplete crushing, resulting in poor particle size uniformity and failing to meet the micron-level precision required for dental bone repair materials.

[0005] The lack of temperature control and heat dissipation mechanisms leads to the easy loss of bioactivity in the raw materials: This solution lacks any temperature monitoring and heat dissipation structure. During the pulverization process, the continuous friction and compression between the moving and fixed liner plates and the raw materials generate a large amount of frictional heat, which cannot be dissipated in time, causing the temperature in the pulverization area to rise. Furthermore, bone repair materials contain bioactive components such as BMP, which are sensitive to temperature. High temperatures can easily cause the active components to become inactive, reducing the osteogenic induction capacity of the material and failing to meet the core requirement of preserving bioactivity in medical bone repair materials. Summary of the Invention

[0006] The purpose of this invention is to provide a technical solution that precisely controls the temperature of the crushing operation, with the crushing structure and the temperature control structure working in tandem to solve the problems in the prior art mentioned in the background section.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A raw material pulverizing device based on microparticle bone repair materials, comprising: The crushing chamber and the crushing roller are rotatably mounted inside the crushing chamber. A support base is provided inside the crushing chamber. A toothed plate is mounted on the support base via a pre-tension spring. The toothed plate is provided with staggered teeth. The crushing roller is provided with crushing teeth. The crushing teeth and the staggered teeth are staggered to crush the raw materials. The pre-tension spring can adjust the position of the toothed plate to adaptively adjust the crushing gap between the crushing teeth and the staggered teeth. Multiple temperature sensors are evenly distributed inside the crushing chamber. The crushing roller is driven to rotate by a circulation tube shaft and has a circulation chamber inside. The toothed plate has a cavity structure and is connected to a circulation pipe. Cooling medium circulates in both the circulation tube shaft and the circulation pipe. The controller adjusts the flow rate of the cooling medium circulation according to the raw material temperature inside the crushing chamber.

[0008] Preferably, multiple temperature sensors are distributed inside the crushing teeth and interleaved teeth, as well as on the surface of the crushing roller and tooth plate. These multiple temperature sensors are used to collect temperature signals from the crushing meshing area, the raw material body, and the surface of the components.

[0009] Preferably, the inlet end of the circulation pipe shaft is connected to a second control valve, and the inlet end of the circulation pipe is connected to a first control valve; the controller is electrically connected to the first control valve and the second control valve respectively, and can independently adjust the flow rate of the cooling medium in the internal circulation cavity of the crushing roller and the cavity structure of the toothed plate to achieve precise temperature control in different zones.

[0010] Preferably, a fine-tuning drive structure is provided between the support base and the toothed plate. The fine-tuning drive structure is configured as a gap adjustment telescopic component, which is electrically connected to the controller. When the internal temperature of the crushing chamber exceeds a preset threshold, the controller drives the gap adjustment telescopic component to increase the crushing gap and reduce the frictional heat generation in the crushing meshing area.

[0011] Preferably, the preload spring is disposed at the telescopic end of the gap adjusting telescopic component, and the staggered teeth are mounted on the telescopic end of the gap adjusting telescopic component by multiple sets of preload springs.

[0012] Preferably, the pulverizing teeth are spring-loaded elastic tooth structures, including metal teeth and medical-grade silicone tooth roots. A compression spring is provided between the medical-grade silicone tooth roots and the roller body of the pulverizing roller. The compression spring adaptively adjusts the tooth extension amount according to the hardness of the raw material. When the material is hard, the spring is compressed to reduce the shearing force, and when the material is soft, the spring is extended to improve the pulverizing efficiency.

[0013] Preferably, the upper and lower parts of the crushing chamber are provided with movable and adjustable sealing plates, and the two sets of sealing plates surround the crushing chamber. When the crushing roller rotates, the two sets of sealing plates are in a closed state around the crushing chamber.

[0014] Preferably, it also includes two sets of circulating pump bodies. One set of circulating pump bodies forms a circulating passage through a pipe and the circulating pipe shaft at both ends of the crushing roller, and the other set of circulating pump bodies forms a circulating passage through a pipe and the circulating pipe.

[0015] Preferably, the internal circulation cavity of the crushing roller is configured with a spiral structure, and the cooling medium of the circulation cavity can form a spiral scouring flow; the spiral scouring flow carries away the heat of the crushing roller as it rotates, and the end of the crushing roller is provided with a detachable sealing cap.

[0016] Preferably, the upper part of the crushing chamber is provided with a feeding channel, the bottom part of the crushing chamber is provided with a discharging channel, the crushing chamber is fixedly installed on the support frame, the feeding channel is vertically arranged with the crushing chamber, and the support frame is provided with a support bearing for positioning the circulation tube shaft.

[0017] Technical effects and advantages of the present invention: The raw material pulverizing device based on microparticle bone repair material proposed in this invention has the following advantages compared with the prior art: This invention achieves a more precise meshing of the core crushing components through adaptive adjustment of the crushing gap, adapting to the dynamic changes during the raw material crushing process, improving the crushing uniformity of micro-particle bone repair materials, and ensuring the accuracy of raw material particle size. Intelligent control of the cooling medium flow rate based on raw material temperature allows for precise control of the crushing operation temperature, preventing frictional heat from damaging the bioactivity of the bone repair materials and ensuring the product quality of the micro-particle raw materials. Cooling medium flow structures are separately installed on the crushing roller and toothed plate to achieve targeted cooling of the core crushing components, resulting in higher heat exchange efficiency and more precise temperature control. The crushing structure and temperature control structure work together to ensure the crushing efficiency of micro-particle bone repair materials while effectively protecting the raw materials, adapting to the specific crushing requirements of micro-particle bone repair materials. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the raw material crushing device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the raw material crushing device of the present invention from the front. Figure 3 This is a schematic diagram of the crushing roller and toothed plate in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the raw material crushing device of the present invention from the side. Figure 5 For the present invention Figure 4 A magnified structural diagram of point A in the middle.

[0019] In the picture: 11. Crushing chamber; 12. Feed channel; 13. Support frame; 14. Discharge channel; 15. Crushing roller; 16. Crushing teeth; 17. Sealing cap; 18. Toothed plate; 19. Interlaced teeth; 110. Support base; 111. Preload spring; 21. Circulation pipe shaft; 22. Circulation pipeline; 23. Support bearing; 24. Control valve one; 25. Control valve two. Detailed Implementation

[0020] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0021] The invention provides, for example Figures 1 to 5 As shown, a raw material pulverizing device based on microparticle bone repair materials includes: The crushing chamber 11 and the crushing roller 15 are rotatably mounted inside the crushing chamber 11. The crushing chamber 11 is provided with a support seat 110. A toothed plate 18 is mounted on the support seat 110 by a pre-tension spring 111. The toothed plate 18 is provided with staggered teeth 19. The crushing roller 15 is provided with crushing teeth 16. The crushing teeth 16 and the staggered teeth 19 are staggered for crushing raw materials. The pre-tension spring 111 can adjust the position of the toothed plate 18 to adaptively adjust the crushing gap between the crushing teeth 16 and the staggered teeth 19. Multiple temperature sensors are evenly distributed inside the crushing chamber 11. The crushing roller 15 is driven to rotate by the circulation tube shaft 21 and the crushing roller 15 is provided with a circulation chamber. The toothed plate 18 has a cavity structure and is connected to the circulation pipe 22. Cooling medium circulates in both the circulation tube shaft 21 and the circulation pipe 22. The controller adjusts the flow rate of the cooling medium circulation according to the raw material temperature inside the crushing chamber 11.

[0022] Working principle: The crushing roller 15 rotates, driving the crushing teeth 16 and the interlocking teeth 19 on the tooth plate 18 to mesh with each other to crush the raw materials. The pre-tension spring 111 elastically adjusts the position of the tooth plate 18, so that the crushing gap between the crushing teeth 16 and the interlocking teeth 19 is adaptively adjusted according to the crushing state of the raw materials, ensuring the close meshing crushing. At the same time, multiple temperature sensors in the crushing chamber 11 collect the raw material temperature signal. The controller adjusts the circulation flow of the cooling medium in the circulation pipe shaft 21 and circulation pipe 22 according to the signal. The cooling medium exchanges heat fully with the core crushing components through the circulation chamber inside the crushing roller 15 and the cavity structure of the tooth plate 18, and removes the frictional heat generated during the crushing process in time. The adaptive adjustment of the crushing gap ensures a closer meshing of the core crushing components, adapting to the dynamic changes during the raw material crushing process, improving the crushing uniformity of micro-particle bone repair materials, and ensuring the accuracy of raw material particle size. Intelligent control of the cooling medium flow rate based on raw material temperature allows for precise control of the crushing operation temperature, preventing frictional heat from damaging the bioactivity of the bone repair materials and ensuring the product quality of the micro-particle raw materials. The crushing roller 15 and the toothed plate 18 are each equipped with a cooling medium flow structure, achieving targeted cooling of the core crushing components, resulting in higher heat exchange efficiency and more precise temperature control. The crushing structure and temperature control structure work together to ensure the crushing efficiency of micro-particle bone repair materials while effectively protecting the raw materials, adapting to the specific crushing requirements of micro-particle bone repair materials.

[0023] To accurately capture temperature changes during the crushing process and achieve multi-dimensional temperature monitoring, ensuring targeted temperature control, temperature sensors are placed on the surfaces of key meshing components and the carrier to comprehensively collect temperature data from the meshing area, the raw material body, and the component surfaces, providing accurate data support for subsequent temperature control strategies. Multiple sets of temperature sensors are distributed inside the crushing teeth 16 and the interlaced teeth 19, as well as on the surfaces of the crushing roller 15 and the toothed plate 18. These multiple sets of temperature sensors are used to collect temperature signals from the crushing meshing area, the raw material body, and the component surfaces.

[0024] To achieve independent temperature control for the crushing roller 15 and the toothed plate 18, and improve the accuracy of cooling regulation, a linkage design of dual control valves and a controller is used to regulate the cooling medium flow rate of the two sets of circulation paths respectively. This allows for targeted cooling based on the heat generation of different components, optimizing the temperature control effect. The inlet end of the circulation pipe shaft 21 is connected to control valve 25, and the inlet end of the circulation pipe 22 is connected to control valve 24. The controller is electrically connected to control valve 24 and control valve 25 respectively, enabling independent adjustment of the cooling medium flow rate in the internal circulation cavity of the crushing roller 15 and the cavity structure of the toothed plate 18, achieving precise temperature control in each zone.

[0025] A temperature and gap linkage adjustment mechanism is constructed to reduce frictional heat generation at the source. An additional gap adjustment expansion component is added and linked with the controller. When the temperature exceeds the preset threshold, the crushing gap is actively increased to reduce the meshing friction intensity and better protect the biological activity of the raw materials in conjunction with the temperature control system.

[0026] A fine-tuning drive structure is provided between the support base 110 and the toothed plate 18. The fine-tuning drive structure is set as a gap adjustment telescopic component, which is electrically connected to the controller. When the internal temperature of the crushing chamber 11 exceeds the preset threshold of 38°C, the controller drives the gap adjustment telescopic component to increase the crushing gap and reduce the frictional heat generation in the crushing meshing area.

[0027] To enhance the adaptive meshing capability of the toothed plate 18 while maintaining both flexibility in gap adjustment and meshing stability, multiple sets of preload springs 111 are installed at the telescopic end of the gap adjustment telescopic component. This allows the toothed plate 18 to adjust the gap following the telescopic component while also ensuring reliable meshing with the crushing teeth 16 through spring elastic buffering. The preload springs 111 are installed at the telescopic end of the gap adjustment telescopic component, and the staggered teeth 19 are mounted on the telescopic end of the gap adjustment telescopic component via multiple sets of preload springs 111.

[0028] To accommodate bone repair materials of varying hardness and avoid excessive shearing that could damage the material structure, while simultaneously improving pulverization efficiency, a spring-loaded elastic tooth structure is employed. Through the cooperation of silicone tooth roots and a compression spring, the tooth extension amount adaptively adjusts according to the material hardness, achieving flexible pulverization. The pulverizing tooth 16 is a spring-loaded elastic tooth structure, comprising a metal tooth head and medical-grade silicone tooth roots. A compression spring is installed between the medical-grade silicone tooth roots and the roller body of the pulverizing roller 15. The compression spring adaptively adjusts the tooth extension amount according to the material hardness; for hard materials, the spring compresses to reduce shearing force, while for soft materials, the spring extends to increase pulverization efficiency.

[0029] To ensure the airtightness of the crushing chamber 11 and prevent raw material splashing and external impurities from entering during the crushing process, while also adapting to the structural requirements of the device's start-up and shutdown states, movable sealing plates are installed at the upper and lower parts of the crushing chamber 11. These plates close to form a closed space when the crushing roller 15 is rotating, improving operational stability and raw material cleanliness. The upper and lower parts of the crushing chamber 11 are equipped with adjustable sealing plates, which surround the crushing chamber 11. When the crushing roller 15 rotates, the two sets of sealing plates are in a closed state.

[0030] To ensure the independence and smoothness of the cooling medium circulation and improve the response speed of temperature control, two independent circulation pumps are configured to provide power to the cooling paths of the crushing roller 15 and the toothed plate 18, ensuring that the cooling medium is supplied accurately as needed and avoiding the cooling lag problem caused by single-path circulation. It also includes two sets of circulation pumps: one set forms a circulation path through a pipe and the circulation pipe shaft 21 at both ends of the crushing roller 15, and the other set forms a circulation path through a pipe and the circulation pipe 22.

[0031] To enhance the heat dissipation of the crushing roller 15 and facilitate disassembly, maintenance, and cleaning of the cavity, the internal circulation cavity of the crushing roller 15 is designed as a spiral structure. This spiral scouring flow improves heat exchange efficiency, and is complemented by a removable sealing cap 17, balancing heat dissipation performance with ease of maintenance. The internal circulation cavity of the crushing roller 15 is designed as a spiral structure, and the cooling medium within the circulation cavity forms a spiral scouring flow. This spiral scouring flow carries away heat from the crushing roller 15 as it rotates. A removable sealing cap 17 is provided at the end of the crushing roller 15.

[0032] To optimize the overall structural layout of the device, ensure the stability of feeding and discharging, and the reliability of device operation, a vertical feeding channel 14 and a bottom discharging channel 14 are rationally set. The cavity is fixed by a support frame 13, and the circulation tube shaft 21 is positioned by a support bearing 23, ensuring precise transmission and smooth overall operation, and adapting to the needs of medical production scenarios. The upper part of the crushing cavity 11 is provided with a feeding channel 12, and the bottom of the crushing cavity 11 is provided with a discharging channel 14. The crushing cavity 11 is fixedly installed on the support frame 13. The feeding channel 12 and the crushing cavity 11 are vertically arranged. The support frame 13 is provided with a support bearing 23 for positioning the circulation tube shaft 21.

[0033] In summary, the present invention also has the following combined effects: Crushing adjustment principle: Relying on the cooperation of the pre-tightening spring 111 and the gap adjustment telescopic component, the tooth plate 18 and the staggered teeth 19 can adaptively adjust the meshing gap with the crushing teeth 16; at the same time, the crushing teeth 16 adopts a spring-loaded elastic structure, and through the medical silicone tooth root and the compression spring, the tooth head extension amount is adaptively changed according to the hardness of the raw material to achieve flexible meshing crushing and avoid excessive shearing.

[0034] Temperature control and cooling principle: Multiple temperature sensors are placed inside the crushing teeth 16 and the interlaced teeth 19, as well as on the surface of the crushing roller 15 and the toothed plate 18, to comprehensively collect temperature signals in key areas. Based on these signals, the controller regulates the flow rate of the medium in the two independent cooling paths of the crushing roller 15 and the toothed plate 18 through dual control valves. Two sets of circulating pumps ensure smooth flow, and the spiral circulation cavity inside the crushing roller 15 can form a spiral scouring flow to enhance heat dissipation efficiency and build a zoned precise temperature control system.

[0035] Linkage control principle: forming a closed-loop linkage between temperature and gap. When the temperature exceeds the preset threshold of 38℃, the controller synchronously drives the gap adjustment telescopic component to increase the meshing gap, reducing frictional heat generation from the source, and coordinating with the temperature control system to control the temperature.

[0036] Auxiliary protection principle: The movable sealing plates at the top and bottom of the crushing chamber 11 close during crushing operations to form a sealed space; the device is fixed by the support frame 13 and the support bearing 23 positions the circulation tube shaft 21, and is equipped with a vertical feed and bottom discharge channel 14 to ensure overall operational stability and sealing.

[0037] Precise Protection of Raw Material Activity and Structure: Multi-dimensional temperature monitoring and independent zoned temperature control precisely control the pulverization temperature to avoid exceeding threshold values, preventing the deactivation of bioactive components such as BMP in bone repair materials. The combination of flexible teeth and adaptive gap adjustment enables flexible pulverization, adapting to raw materials of varying hardness while avoiding excessive shearing that could damage the natural bone matrix structure, thus ensuring the osteogenic scaffold performance of the material. Improved Pulverization Efficiency and Particle Size Quality: The flexible structure adapts to the hardness of the raw materials, reducing shear force for hard materials and increasing pulverization intensity for soft materials, balancing pulverization effect and efficiency. Temperature and gap linkage adjustment reduces friction and jamming, while the spiral flushing flow enhances heat dissipation, further ensuring pulverization continuity and particle size uniformity, meeting the requirements of medical microparticles. Guaranteed Cleanliness and Stability: The movable sealing plate forms a sealed cavity after closure, effectively preventing raw material splashing and the ingress of external impurities, meeting the cleanliness requirements of medical materials. Two independent cooling channels are driven by a dedicated circulating pump, avoiding the cooling lag problem of single-channel circulation, resulting in faster temperature control response and ensuring long-term stable operation of the device. Balancing practicality and ease of maintenance: The end of the crushing roller 15 has a detachable sealing cap 17, which facilitates cleaning of the circulation chamber and maintenance of components; the overall structure is reasonably laid out, the support frame 13 and the support bearing 23 ensure precise transmission, and the vertical feeding and bottom discharge channels 14 improve the smoothness of operation, making it suitable for industrial medical production scenarios.

[0038] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. A raw material pulverizing device based on microparticle bone repair materials, characterized in that, The application relates to a pulverizing device, which comprises a pulverizing cavity (11) and a pulverizing roller (15), the pulverizing roller (15) is rotatably installed in the pulverizing cavity (11), a supporting base (110) is arranged in the pulverizing cavity (11), a toothed plate (18) is installed on the supporting base (110) through pre-tightening springs (111), staggered teeth (19) are arranged on the toothed plate (18), pulverizing teeth (16) are arranged on the pulverizing roller (15), the pulverizing teeth (16) and the staggered teeth (19) are arranged in a staggered mode for pulverizing raw materials, the pre-tightening springs (111) can adjust the position of the toothed plate (18) to adaptively adjust the crushing gap between the pulverizing teeth (16) and the staggered teeth (19). A plurality of temperature sensors are uniformly distributed in the pulverizing cavity (11), the pulverizing roller (15) is driven to rotate through a circulating pipe shaft (21), and a circulating cavity is arranged in the pulverizing roller (15); the toothed plate (18) has a cavity structure and is connected with a circulating pipe (22), and cooling medium circulates in the circulating pipe shaft (21) and the circulating pipe (22); and a controller adjusts the flow of the cooling medium according to the temperature of the raw materials in the pulverizing cavity (11). The plurality of temperature sensors are arranged in the interiors of the pulverizing teeth (16) and the staggered teeth (19) and on the surfaces of the pulverizing roller (15) and the toothed plate (18), and the plurality of temperature sensors are used for collecting temperature signals of a pulverizing meshing area, raw materials and component surfaces.

2. The raw material pulverizing device for a micro-particle bone repair material according to claim 1, characterized by The water inlet end of the circulating pipe shaft (21) is connected with a control valve II (25), the water inlet end of the circulating pipe (22) is connected with a control valve I (24), the controller is electrically connected with the control valve I (24) and the control valve II (25), the flow of the cooling medium in the circulating cavity in the pulverizing roller (15) and the cavity structure of the toothed plate (18) can be independently adjusted, and accurate temperature control in different areas is realized.

3. The raw material pulverizing device for a micro-particle bone repair material according to claim 2, wherein A fine adjustment driving structure is arranged between the supporting base (110) and the toothed plate (18), the fine adjustment driving structure is arranged as a gap adjustment telescopic piece, and the gap adjustment telescopic piece is electrically connected with the controller; when the temperature in the pulverizing cavity (11) exceeds a preset threshold value, the controller drives the gap adjustment telescopic piece to increase the crushing gap, so that the friction heat of the pulverizing meshing area is reduced.

4. The raw material pulverizing device for a micro-particle bone repair material according to claim 3, characterized by The pre-tightening springs (111) are arranged at the telescopic ends of the gap adjustment telescopic piece, and the staggered teeth (19) are installed on the telescopic ends of the gap adjustment telescopic piece through the plurality of pre-tightening springs (111).

5. The raw material pulverizing device for a micro-particle bone repair material according to claim 4, wherein The pulverizing teeth (16) are spring-loaded elastic tooth heads, which comprise metal tooth heads and medical silica gel tooth roots, and a compression spring is arranged between the medical silica gel tooth roots and the roller body of the pulverizing roller (15); the compression spring adaptively adjusts the protruding amount of the tooth head according to the hardness of raw materials, the spring compression is reduced to reduce the shearing force when the raw materials are hard, and the spring is elongated to improve the pulverizing efficiency when the raw materials are soft.

6. The raw material pulverizing device for a micro-particle bone repair material according to claim 1, characterized in that, The upper part and the lower part of the pulverizing cavity (11) are provided with movable and adjustable closing plates, and the two closing plates surround the pulverizing cavity (11); when the pulverizing roller (15) rotates, the two closing plates are in a closed state relative to the pulverizing cavity (11).

7. The raw material pulverizing device for a micro-particle bone repair material according to claim 1, characterized in that, ​ 8. The raw material pulverizing device for a micro-particle bone repair material according to claim 1, characterized in that, Also include two groups of circulating pump body, a group of circulating pump body through the pipeline with the crushing roller (15) both ends of the circulating pipe shaft (21) circulation passage, another group of circulating pump body through the pipeline with circulating pipe (22) circulation passage.

9. The raw material pulverizing device for a micro-particle bone repair material according to claim 8, wherein The internal circulation cavity of the crushing roller (15) is provided with a spiral structure, and the cooling medium of the circulation cavity can form a spiral scouring flow; the spiral scouring flow takes away the heat of the crushing roller (15) while the crushing roller (15) rotates, and the end of the crushing roller (15) is provided with a detachable closed rotary cover (17).

10. The raw material pulverizing device for a micro-particle bone repair material according to claim 9, wherein The upper part of the crushing cavity (11) is provided with an inlet channel (12), the bottom of the crushing cavity (11) is provided with an outlet channel (14), the crushing cavity (11) is integrally fixed and installed on the support frame (13), the inlet channel (12) is vertically arranged with the crushing cavity (11), and the support frame (13) is provided with a support bearing (23) for positioning the circulating pipe shaft (21).

Images