Crushing device for medical raw materials
By introducing an integrated design for pulverization and pre-screening and a temperature control component into the pulverizer, the problems of material accumulation and low efficiency are solved, achieving a highly efficient and stable pulverization process that meets the production requirements of medical device granular products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-17
AI Technical Summary
Existing crushers suffer from problems such as material accumulation, low crushing efficiency, and product mixing during the crushing process, leading to increased production costs and unstable product quality.
A pulverizing device for medical raw materials was designed, which combines a pulverizing mechanism and a pre-screening mechanism to achieve integrated pulverization and pre-screening. Size separation is achieved through a screen, and a temperature control component and vibration damping structure are provided to improve pulverization efficiency and product yield.
It effectively avoids material accumulation, improves crushing efficiency, ensures product quality stability and yield, reduces production costs, and meets the requirements for efficient and precise production of medical device granular products.
Smart Images
Figure CN223996221U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical processing equipment technology, specifically to a pulverizing device for medical raw materials. Background Technology
[0002] In the processing of medical device granules, the granule crushing process is crucial. Its purpose is to break the raw material granules into smaller sizes so that they can be sieved later, thereby obtaining granule products that meet specific size specifications to satisfy the precise needs of different medical application scenarios.
[0003] Currently, most pulverizers widely used in the industry only have a single pulverizing function. In actual production operations, materials that have met the pulverization requirements tend to accumulate at the bottom of the equipment for extended periods due to the lack of a timely and effective separation and collection mechanism. This accumulation not only leads to uneven material distribution within the pulverizing chamber, increasing the load on the pulverizing blades and thus reducing pulverization efficiency, but also causes pulverized products that have met the standards to mix with those that have not. In the subsequent unified collection and screening process, this directly affects the final product yield, resulting in resource waste and increased production costs. Therefore, there is an urgent need to develop new pulverizing devices for medical raw materials to solve the above-mentioned technical problems. Utility Model Content
[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a medical raw material pulverizing device that can improve pulverizing efficiency, product yield and reduce material accumulation in the pulverizing chamber, so as to ensure the quality and purity of the final product.
[0005] To achieve the above and other related objectives, this utility model provides a pulverizing device for medical raw materials, including a pulverizing mechanism and a pre-screening mechanism;
[0006] The pulverizing mechanism includes a pulverizing chamber body, pulverizing blades disposed inside the pulverizing chamber body, and a power assembly for driving the pulverizing blades to rotate.
[0007] The pre-screening mechanism includes a support component and a screen connected to the support component, and the screen is located below the material discharge port of the main body of the crushing chamber.
[0008] In one embodiment of this utility model, the medical raw material pulverizing device further includes a temperature control component, which includes a fluid circulation loop;
[0009] The fluid circulation loop is connected to the inner cavity of the side wall of the main body of the crushing chamber and / or to the inner cavity of the shaft sleeve of the crushing blade.
[0010] In one embodiment of the present invention, the power assembly includes an external drive component;
[0011] The pulverizing blade is rotatably mounted inside the pulverizing chamber via a mounting bracket, and the drive shaft of the drive component is connected to the rotating shaft of the pulverizing blade via a vibration damping structure.
[0012] In one embodiment of the present invention, the vibration damping structure includes a fitting gap structure that causes axial or radial relative displacement between the drive shaft and the rotating shaft, and / or an elastic buffer element disposed between the drive shaft and the rotating shaft.
[0013] In one embodiment of this utility model, a gap is provided between the mounting bracket and the screen, and the mounting bracket is located between 1 / 2 and 4 / 5 of the height of the main body of the crushing chamber.
[0014] In one embodiment of this utility model, the mounting bracket is fixedly connected to the inner wall of the crushing chamber body, and the crushing blade is rotatably connected to the mounting bracket via a rotating shaft.
[0015] In one embodiment of this utility model, the main body of the crushing chamber includes an upper cover, and the drive shaft of the drive member passes through the upper cover and is connected to the crushing blade;
[0016] The driving component is fixed to the upper part of the upper cover by a locking component, and the upper cover and the crushing chamber body are connected by a non-rotational limiting connection.
[0017] In one embodiment of this utility model, the fluid circulation loop includes an inlet and an outlet disposed in the main body of the pulverizing chamber;
[0018] The liquid inlet is sealed to the liquid outlet of the external cooling equipment, and the liquid outlet is sealed to the liquid inlet of the external cooling equipment.
[0019] In one embodiment of this utility model, the supporting component is a collecting cylinder that is connected to the main body of the crushing chamber, and the screen is detachably fixed to the upper part of the collecting cylinder by a fixing ring.
[0020] In one embodiment of this utility model, the aperture of the sieve is between 40μm and 1000μm.
[0021] In summary, this utility model achieves integrated crushing and pre-screening operations by setting up a crushing mechanism and a pre-screening mechanism. During the crushing process, after the material is broken by the crushing blades, it falls directly onto the screen of the pre-screening mechanism for screening. Materials that meet the size specifications can be discharged and collected in a timely manner through the screen, avoiding accumulation at the bottom of the crushing chamber. This effectively solves the problems of material accumulation, low crushing efficiency, and product mixing in existing crushers. Large particles retained after pre-screening can be crushed again to improve the product yield. Thus, the medical raw material crushing device of this invention not only improves production efficiency and ensures the stability of product quality, but also reduces production costs, thereby meeting the usage requirements. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of a medical raw material pulverizing device in an optional embodiment of the present invention;
[0024] Figure 2 This is a schematic diagram of the crushing mechanism structure in an optional embodiment of the present invention;
[0025] Figure 3 This is a schematic diagram showing the connection between the pulverizing mechanism and the temperature control component in an optional embodiment of the present invention;
[0026] Figure 4 This is a schematic diagram of the pre-screening mechanism in an optional embodiment of the present invention;
[0027] Component labeling description: 10 crushing mechanism, 11 crushing chamber body, 111 side wall inner cavity, 112 top cover, 12 crushing blade, 121 rotating shaft sleeve, 1211 rotating shaft, 122 mounting bracket, 123 vibration damping structure, 13 power component, 131 driving component, 132 locking component, 20 pre-screening mechanism, 21 supporting component, 211 collecting cylinder, 212 fixing ring, 22 screen, 30 temperature control component, 31 fluid circulation loop, 311 liquid inlet, 312 liquid outlet. Detailed Implementation
[0028] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.
[0029] Please see Figures 1 to 4 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0030] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise stated in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, devices, and materials similar to or equivalent to those described, used, or made of materials in the embodiments of this invention.
[0031] Please see Figure 1 This utility model provides a pulverizing device for medical raw materials, including a pulverizing mechanism 10 and a pre-screening mechanism 20;
[0032] The pulverizing mechanism 10 includes a pulverizing chamber body 11, a pulverizing blade 12 disposed inside the pulverizing chamber body 11, and a power assembly 13 for driving the pulverizing blade 12 to rotate.
[0033] The pre-screening mechanism 20 includes a support component 21 and a screen 22 connected to the support component 21, and the screen 22 is located below the material discharge port of the crushing chamber body 11.
[0034] It should be noted that the crushing mechanism 10 can be supported either by an independent structural support assembly to support the crushing chamber body 11, the crushing blades 12, and the power assembly 13, or by a pre-screening mechanism 20. The crushing chamber body 11, as the space containing the entire crushing process, needs an internal structure that ensures the material is fully dispersed and crushed within it. The crushing blades 12 are generally made of high-strength, wear-resistant materials, with sharp edges and suitable shapes to adapt to the crushing requirements of materials with different hardness and properties. The power assembly 13 provides stable power for the high-speed rotation of the crushing blades 12, with sufficient power and smooth operation to ensure efficient crushing. The support component 21 serves to fix and support the screen 22. The support component 21 needs to be structurally stable and easy to install. The support component 21 can be designed to accommodate the replacement and maintenance needs of screens 22 of different specifications. For example, the support component 21 can be an independent support frame, a support structure connected to the crushing chamber body 11 or other structural components, or a structure integrated into the crushing chamber body 11 or the collection cylinder 211. The specific choice can be made according to actual use. The sieve 22 is selected with appropriate mesh size and material according to the size and specifications of medical device granules. Its surface is smooth and burr-free, with uniform pore size to ensure precise screening. The pulverizing blades 12 can be fixed inside the pulverizing chamber body 11 via an adjustable mounting structure, allowing adjustment of their installation angle and spacing according to different pulverizing needs to achieve optimal pulverizing effect. Alternatively, they can be rotatably fixed inside the pulverizing chamber body 11 via a mounting bracket 122. The power component 13 can be a servo motor or a variable frequency motor. The variable frequency motor can automatically adjust its speed according to the properties of the material and the pulverizing progress to meet actual usage requirements. The sieve 22 can be configured with one or more layers. Each layer of the multi-layer sieve 22 can correspond to a different mesh size, enabling multi-stage screening of the pulverized material simultaneously. This improves screening efficiency and product grading accuracy, meeting the requirements of different size specifications for medical device granules and ensuring the high quality and purity of the final product. Each layer of screen 22 can screen materials by using the vibration generated by the rotation of the crushing blades 12, or it can use a vibration mechanism to drive the vibration to screen the materials. The vibration mechanism can be an electromagnetic vibrator, a mechanical vibrator or a pneumatic vibrator. The vibration mechanism is installed on the support frame of the screen 22 and transmits the vibration energy to the screen 22 through a rigid connector to ensure that the screen 22 can obtain uniform and effective vibration and avoid uneven screening caused by excessive or weak local vibration.
[0035] This utility model discloses a medical raw material pulverizing device that integrates pulverizing and pre-screening operations by setting up a pulverizing mechanism 10 and a pre-screening mechanism 20. During the pulverizing process, after the material is crushed by the pulverizing blades 12, it falls directly onto the screen 22 of the pre-screening mechanism 20 for screening. Materials that meet the size specifications can be discharged and collected in time through the screen 22, avoiding accumulation at the bottom of the pulverizing chamber body 11. This effectively solves the problems of material accumulation, low pulverizing efficiency, and product mixing in existing pulverizers. Larger particles retained after pre-screening can be pulverized again to improve product yield. Thus, the medical raw material pulverizing device of this invention not only improves production efficiency and ensures product quality stability, but also reduces production costs, meeting the requirements of the medical device granule product processing industry for efficient and precise production.
[0036] To address the issue of heat accumulation caused by friction and collision during the pulverization process, such as the heat generated in traditional medical raw material pulverizers after prolonged pulverization, which causes the pulverizing blade 12 to heat up and melt, resulting in the product edges sticking to the blade 12 and reducing pulverization efficiency. Please refer to [link to relevant documentation]. Figure 3 As an optional embodiment of this case, the medical raw material pulverizing device further includes a temperature control component 30, which includes a fluid circulation loop 31; the fluid circulation loop 31 is connected to the inner cavity 111 of the side wall of the pulverizing chamber body 11 and / or to the inner cavity of the rotating shaft sleeve 121 of the pulverizing blade 12.
[0037] It should be noted that the fluid circulation loop 31 connects the inner cavity 111 of the side wall of the crushing chamber body 11 and / or the inner cavity of the shaft sleeve 121 of the crushing blade 12; it should be understood that there should be a seal between the fluid circulation loop 31 and the inner cavity 111 of the side wall of the crushing chamber body 11, between the fluid circulation loop 31 and the inner cavity of the shaft sleeve 121 of the crushing blade 12, and between the shaft 1211 of the crushing blade 12 and the shaft sleeve 121 to ensure a seal, such as a rubber ring; the temperature control assembly 30 includes the fluid circulation loop 31, a pump, and a heat exchanger; the fluid circulation loop 31 includes pipes and flow channels distributed in the inner cavity 111 of the side wall of the crushing chamber body 11 and / or the inner cavity of the shaft sleeve 121 of the crushing blade 12; as Figure 3The inlet 311 is connected to the outlet 312 via the inner cavity 111 of the side wall of the pulverizing chamber body 11, the inner cavity of the mounting bracket 122, and the inner cavity of the rotating shaft sleeve 121. It should be understood that baffles can be installed at corresponding positions in the inner cavities 111 of the side wall of the pulverizing chamber body 11, the inner cavity of the mounting bracket 122, and the inner cavity of the rotating shaft sleeve 121 of the fluid circulation loop 31 to extend the fluid flow path and improve heat dissipation. The pump provides power for the fluid circulation, ensuring the continuous flow of the cooling or heating fluid in the loop; the heat exchanger is responsible for heat exchange with the external cooling or heating system to achieve control of the fluid temperature. The fluid circulation loop 31 is connected to the inner cavity 111 of the side wall of the crushing chamber body 11, allowing the cooling or heating fluid to be evenly distributed around the crushing chamber body 11, effectively absorbing or releasing heat, thereby controlling the internal temperature of the crushing chamber body 11. The connection to the inner cavity of the shaft sleeve 121 of the crushing blade 12 allows direct cooling of the rotating shaft 1211 of the high-speed rotating crushing blade 12, thus reducing the temperature of the crushing blade 12 and preventing the heat generated by friction from adversely affecting the performance of the crushing blade 12 and the properties of the material. The circulating fluid can be selected from coolant or heat transfer oil according to actual needs. By controlling the temperature and flow rate of the fluid, precise temperature regulation of the crushing process can be achieved, ensuring that the material is crushed in a suitable temperature environment and avoiding changes in material properties or equipment damage due to temperature variations.
[0038] In this case, the introduction of the temperature control component 30 further improves the performance of the medical raw material pulverizing device. By controlling the temperature of the pulverizing chamber body 11 and the pulverizing blade 12 through the fluid circulation loop 31, the problem of heat accumulation caused by friction and collision during the pulverizing process can be effectively solved, preventing the pulverizing blade 12 and the material from changing their properties due to excessive temperature, avoiding or reducing the adhesion of material to the pulverizing blade 12, thereby improving the pulverizing efficiency; at the same time, it also helps to extend the service life of the equipment and improve the stability and reliability of the production process.
[0039] The existing drive unit 131 is directly and rigidly connected to the crushing blade 12. Vibration of the drive unit 131 during operation increases the vibration of the crushing blade 12, thus affecting the crushing effect of the crushing blade 12. Please refer to... Figure 3 As an optional embodiment of this case, the power assembly 13 includes an external drive component 131; the crushing blade 12 is rotatably mounted inside the crushing chamber body 11 via a mounting bracket 122, and the drive shaft of the drive component 131 and the rotating shaft 1211 of the crushing blade 12 are connected by a vibration damping structure 123.
[0040] It should be noted that the external design of the drive component 131 has several advantages. Firstly, it facilitates the installation, maintenance, and repair of the device. Since the drive component 131 is located outside the main body 11 of the crushing chamber, operators can easily access all components of the drive component 131 without disassembling the main body 11, thus improving the convenience of device maintenance. Secondly, the external drive component 131 effectively reduces the complexity and failure rate inside the main body 11 of the crushing chamber, reducing potential material leakage problems caused by the drive component 131 inside the crushing chamber, and improving the reliability and safety of the device operation. The crushing blade 12 is rotatably mounted inside the main body 11 of the crushing chamber via a mounting bracket 122. The mounting bracket 122 can be made of high-strength, lightweight materials, ensuring the stability of the crushing blade 12 installation while avoiding increasing the overall burden on the device due to excessive weight. The mounting bracket 122 and the crushing blade 12 are connected by bearings, ensuring that the crushing blade 12 maintains good balance and stability during high-speed rotation, reducing vibration and shaking, thereby extending the service life of the crushing blade 12 and improving the consistency of the crushing effect. The main function of the vibration damping structure 123 is to effectively reduce the vibration generated during the transmission between the drive component 131 and the crushing blade 12. In actual production, the drive component 131 itself vibrates, and the high-speed rotation of the crushing blade 12 and the continuous impact of the material also generate significant vibration. This vibration not only affects the normal operation of the crushing blade 12, leading to accelerated wear and shortened service life, but also causes instability in the drive component 131 and even the entire equipment, affecting the crushing quality and efficiency. The vibration damping structure 123, by employing a combination of elastic connecting elements, shock-absorbing washers, and precision transmission devices, can significantly absorb and buffer vibration energy, minimizing the vibration amplitude. For example, the elastic connecting element can form a flexible connection transition between the drive shaft and the rotating shaft 1211. When vibration occurs, the elastic element deforms, storing and dissipating vibration energy; the shock-absorbing washer further isolates and dampens the transmission of vibration, ensuring the smoothness of the transmission process.
[0041] Please see Figure 3 As an optional embodiment of this case, the vibration damping structure 123 includes a fitting gap structure that causes axial or radial relative displacement between the drive shaft and the rotating shaft 1211, and / or an elastic buffer element disposed between the drive shaft and the rotating shaft 1211.
[0042] It should be noted that the clearance structure is a gap created when the drive shaft and the rotating shaft 1211 are connected by insertion, allowing relative displacement between the two in the axial or radial direction. Alternatively, part of the clearance structure may be located on the drive shaft, and another part on the rotating shaft 1211. For example, a portion of the clearance structure on the rotating shaft 1211, such as a mating hole, may be integrally formed with the rotating shaft 1211. When the crushing blade 12 is subjected to uneven material resistance or impact during the crushing process, this relative displacement can effectively absorb and mitigate the resulting vibration. An elastic buffer element is installed between the drive shaft and the rotating shaft 1211, utilizing its elastic properties to absorb and attenuate vibration energy. These elements can be made of materials with good elasticity and wear resistance, such as rubber gaskets and springs. When vibration is transmitted to the elastic buffer element, the elastic buffer element undergoes elastic deformation, converting the vibration energy into heat energy and dissipating it, thereby significantly reducing the amplitude and frequency of the vibration.
[0043] Please see Figure 1 As an optional embodiment of this case, the mounting bracket 122 is provided with a gap between it and the screen 22, and the mounting bracket 122 is located between 1 / 2 and 4 / 5 of the height of the crushing chamber body 11, with the lower end of the crushing chamber body 11 as the starting point.
[0044] It should be noted that the gap between the mounting bracket 122 and the screen 22 effectively prevents the accumulation and blockage of crushed material inside the crushing chamber body 11. During the crushing process, after the material is crushed by the crushing blades 12, it will move downwards due to inertia and gravity. If there is not enough gap between the mounting bracket 122 and the screen 22, the material is prone to accumulate between them, forming a material layer. This will not only hinder the subsequent fall of material, but also increase the load on the crushing blades 12 and reduce the crushing efficiency. A reasonable gap setting can ensure that the material passes through smoothly and avoid the accumulation phenomenon. The mounting bracket 122 is positioned between 1 / 2 and 4 / 5 of the height of the main body 11 of the crushing chamber. For example, the mounting bracket 122 is positioned at 2 / 3 of the height of the main body 11 of the crushing chamber. When the crushing blade 12 rotates, most of the material is thrown towards the side wall of the crushing chamber under the action of centrifugal force and moves downward under the action of gravity. The mounting bracket 122 located at this position can facilitate the crushing blade 12 to fully crush the material during the rotation process, and at the same time, it can make the crushed material fall smoothly into the screen 22 of the pre-screening mechanism 20 for screening. It should be understood that the crushing blade 12 can be set above the mounting bracket 122, below the mounting bracket 122, or on the upper and lower sides of the mounting bracket 122.
[0045] Please see Figure 3As an optional embodiment of this case, the mounting bracket 122 is fixedly connected to the inner wall of the crushing chamber body 11, and the crushing blade 12 is rotatably connected to the mounting bracket 122 through the rotating shaft 1211.
[0046] It should be noted that the fixed connection method is such as welding, bolt connection, bonding, etc.; the crushing blade 12 is rotatably connected to the mounting bracket 122 through the rotating shaft 1211. The rotating shaft 1211 and the mounting bracket 122 are rotatably connected through bearings. The high-precision bearings can reduce friction and vibration during rotation, ensuring that the crushing blade 12 runs at a stable speed, thereby improving the consistency and stability of the crushing effect.
[0047] Please see Figure 1 Alternatively, as an optional embodiment of this case, the main body 11 of the crushing chamber includes an upper cover 112, and the drive shaft of the drive member 131 passes through the upper cover 112 and is connected to the crushing blade 12;
[0048] The driving component 131 is fixed to the upper part of the upper cover 112 by the locking component 132, and the upper cover 112 and the crushing chamber body 11 are connected by a non-rotational limiting connection.
[0049] It should be noted that the drive shaft of the drive component 131 passes through the upper cover 112 and connects to the crushing blade 12. This not only ensures stable power transmission but also effectively prevents dust and other materials from leaking from the connection point, ensuring the cleanliness and safety of the equipment operation. The locking component 132 is a locking ring or a common fastener such as a bolt or nut. By providing a corresponding mounting seat or fixing hole on the upper part of the upper cover 112, the drive component 131 is firmly installed on the upper cover 112. This has the advantages of convenient disassembly and assembly and structural stability, facilitating equipment maintenance and repair. It also ensures the stability of the drive component 131 during operation, preventing displacement or loosening of the drive component 131 due to vibration or impact. The non-rotational limiting connection design ensures the stable position of the upper cover 112 on the crushing chamber body 11, preventing the upper cover 112 from rotating or loosening during equipment operation. This connection method can be achieved by setting a slot, positioning pin, or other structure on the contact surface between the upper cover 112 and the crushing chamber body 11. The slot or positioning pin can precisely limit the rotational freedom of the upper cover 112, so that it can remain fixed when subjected to external force, thereby ensuring the stable operation of the entire crushing mechanism 10.
[0050] Please see Figure 3 As an optional embodiment of this case, the fluid circulation loop 31 includes an inlet 311 and an outlet 312 disposed on the main body 11 of the pulverizing chamber;
[0051] The liquid inlet 311 is sealed to the liquid outlet pipe of the external cooling device, and the liquid outlet 312 is sealed to the liquid inlet pipe of the external cooling device.
[0052] It should be noted that the inlet 311 and outlet 312 are located at different positions on the main body 11 of the grinding chamber to ensure effective circulation of the coolant. The inlet 311 is sealed to the outlet pipe of the external cooling equipment, and the outlet 312 is sealed to the inlet pipe of the external cooling equipment. The sealing is achieved using high-quality gaskets, sealant, and other materials to ensure no leakage occurs during coolant circulation. The external cooling equipment can be a cooling water circulator, a refrigeration unit, etc., selected and configured according to actual production needs.
[0053] Please see Figure 1 As an optional embodiment of this case, the supporting component 21 is a collection cylinder 211 that is connected to the main body 11 of the crushing chamber, and the screen 22 is detachably fixed to the upper part of the collection cylinder 211 by a fixing ring 212.
[0054] It should be noted that the connection between the collecting cylinder 211 and the main body 11 of the grinding chamber can be a snap-fit connection, a threaded connection, or a flange connection, which facilitates the assembly and maintenance of the equipment. It also allows for the replacement of collecting cylinders 211 of different specifications according to actual production needs, to adapt to different output and material characteristics. The screen 22 is detachably fixed to the collecting cylinder 211 by a retaining ring 212. The retaining ring 212 is usually made of stainless steel or high-strength plastic, possessing sufficient strength and durability. During installation, the screen 22 is placed on top of the collecting cylinder 211, and then the retaining ring 212 is tightened to securely fix the screen 22 to the collecting cylinder 211. When it is necessary to replace the screen 22 or clean it, simply loosen the retaining ring 212 to easily remove the screen 22, facilitating the maintenance and replacement of the screen 22. It also accommodates screens 22 of different mesh sizes and materials, meeting the precise particle size requirements of different medical device granule products.
[0055] Please see Figure 1 As an optional embodiment of this case, the main body 11 of the crushing chamber and the collecting cylinder 211 are an integral structure. For example, in the integral structure, the part above the screen 22 can be referred to as the main body 11 of the crushing chamber, and the part below the screen 22 can be referred to as the collecting cylinder 211. A material inlet can be opened at the bottom or side of the collecting cylinder 211 to remove the material inside the collecting cylinder 211, and a door panel is provided on the material inlet to close or open the material inlet.
[0056] As an optional embodiment of this case, the aperture of the screen 22 is between 40μm and 1000μm.
[0057] It should be noted that small-aperture sieves 22 (40μm-100μm) are suitable for preparing fine particulate products, such as microparticle drug carriers for ophthalmic surgery. Medium-aperture sieves 22 (100μm-500μm) have a wider range of applications and are suitable for the production of most medical device particulate products, such as dental filling materials and granular hemostatic agents for surgery. Large-aperture sieves 22 (500μm-1000μm) are mainly used in applications where particle size requirements are relatively relaxed, such as larger-particle drug formulations used in certain rehabilitation equipment.
[0058] As an optional embodiment of this case, the crushing blade 12 is a double-layer or multi-layer metal blade, and the surface of the crushing blade 12 is covered with a high-temperature resistant ceramic coating, such as alumina (Al2O3) or zirconium oxide (ZrO2). These ceramic materials can maintain stable performance in high-temperature environments, and at the same time have high hardness and wear resistance, which can effectively resist the wear of materials on the blade surface.
[0059] In summary, this utility model effectively overcomes some practical problems in the prior art, thus having high utilization value and significance.
[0060] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A pulverizing device for medical raw materials, characterized in that, The pulverizing device comprises a pulverizing mechanism and a pre-screening mechanism. The pulverizing mechanism comprises a pulverizing cavity body, a pulverizing blade arranged inside the pulverizing cavity body, and a power assembly for driving the pulverizing blade to rotate. The pre-screening mechanism comprises a support component and a screen mesh connected to the support component, and the screen mesh is located below a material dropping port of the pulverizing cavity body.
2. The medical material powdering device according to claim 1, wherein The pulverizing device for medical raw materials further comprises a temperature control assembly, which comprises a fluid circulation loop. The fluid circulation loop is in communication with a side wall inner cavity of the pulverizing cavity body and / or a rotating shaft sleeve inner cavity of the pulverizing blade.
3. The medical material powdering device according to claim 1, wherein The power assembly comprises an external driving member. The pulverizing blade is rotatably installed inside the pulverizing cavity body through a mounting bracket, and a driving shaft of the driving member is in transmission connection with a rotating shaft of the pulverizing blade through a vibration damping structure.
4. The medical material powdering device according to claim 3, wherein The vibration damping structure comprises: a matching gap structure for generating axial or radial relative displacement between the driving shaft and the rotating shaft, and / or an elastic buffer element arranged between the driving shaft and the rotating shaft.
5. The medical material powdering device according to claim 3, wherein A gap is arranged between the mounting bracket and the screen mesh, and the mounting bracket is located between 1 / 2 and 4 / 5 of the height of the pulverizing cavity body.
6. The medical material powdering device according to claim 3, wherein The mounting bracket is fixedly connected with the inner wall of the pulverizing cavity body, and the pulverizing blade is rotatably connected with the mounting bracket through the rotating shaft.
7. The medical material powdering device according to claim 3, wherein The pulverizing cavity body comprises an upper cover, and the driving shaft of the driving member is connected with the pulverizing blade through the upper cover. The driving member is fixed to the upper part of the upper cover through a locking member, and the upper cover is in non-rotating limiting connection with the pulverizing cavity body.
8. The medical material powdering device according to claim 2, wherein The fluid circulation loop comprises an inlet and an outlet arranged on the pulverizing cavity body. The inlet is sealingly connected with an outlet pipe of an external cooling device, and the outlet is sealingly connected with an inlet pipe of the external cooling device.
9. The medical material powdering device according to claim 1, wherein The support component is a collecting cylinder which is in matching connection with the pulverizing cavity body, and the screen mesh is detachably fixed to the upper part of the collecting cylinder.
10. The medical material powdering device according to claim 1, wherein The pore size of the screen mesh is between 40 μm and 1000 μm.