A device and method for preparing nanoscale ultrafine powder

Abstract

The application provides a preparation device and method of nanoscale superfine powder, and relates to the technical field of calcium particle preparation, and comprises a solid-gas mixing cylinder, a positive voltage cylinder, a negative voltage cylinder and a positive-negative ion impact tube; the solid-gas mixing cylinder is provided with a feeding port for inputting animal skeleton coarse particles and oxygen to form a solid-gas mixed gas flow; the solid-gas mixing cylinder is communicated with the positive voltage cylinder and the negative voltage cylinder; the positive voltage cylinder ionizes the oxygen in the solid-gas mixed gas flow into a positive ion state, and the negative voltage cylinder ionizes the oxygen in the solid-gas mixed gas flow into a negative ion state; the outlet of the positive voltage cylinder is communicated with the outlet of the negative voltage cylinder, the solid-gas mixed gas flow with the positive ion state and the solid-gas mixed gas flow with the negative ion state are combined at the outlet and enter the positive-negative ion impact tube, the solid-gas mixed gas flow with the positive ion state and the solid-gas mixed gas flow with the negative ion state in the positive-negative ion impact tube are strongly impacted, and a large amount of energy released when the positive ion and the negative ion combine crushes the animal skeleton coarse particles into superfine powder.

Description

Technical Field

[0001] This invention relates to the field of calcium particle preparation technology, and in particular to an apparatus and method for preparing nanoscale ultrafine powder. Background Technology

[0002] Calcium is an essential element for the human body, with 99% of it found in bones and teeth. Generally, before the age of 35, the body absorbs calcium at a rate greater than it is lost; after 35, the rate of calcium loss exceeds the rate of absorption. As calcium is lost, symptoms such as osteoporosis can occur. To alleviate these symptoms, it is necessary to supplement with calcium-rich foods or medications, leading to the development of various calcium supplements. Traditional calcium sources are mainly calcium carbonate (the main component of limestone). However, studies have shown that long-term use of calcium carbonate can cause irreversible damage to the renal tubules and may lead to kidney stones. Decomposing animal bones into nano-sized ultrafine powder yields 3-9 nanometer hydroxyapatite (HAP) particles, which are readily absorbed by the body and possess good bioactivity.

[0003] Currently, calcium tablets are prepared using both chemical and physical methods.

[0004] The chemical method uses calcium carbonate (the main component of limestone) as the primary raw material, which undergoes a combination reaction with other compounds under the action of a catalyst to obtain a mixture mainly composed of hydroxyapatite, which is then purified. Calcium tablets prepared by this chemical method, regardless of their purity, contain other substances that are unnecessary or harmful to the human body. Because they are made from minerals, they lack the biological activity to bind with the human body.

[0005] Physical methods utilize calcium-rich organic materials such as animal bones, coral, or shells, obtaining fine particles through physical processes like crushing and grinding, and then processing these fine particles into calcium tablets. Currently, the particle size produced by physical methods can only reach the 100-nanometer level, resulting in low absorption rates by the human body. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide a device and method for preparing nano-scale ultrafine powder, which can solve the technical problem that the active biological calcium particles prepared by physical methods in the prior art can only reach the 100-nanometer level and have a low human absorption rate.

[0007] In a first aspect, an apparatus for preparing nanoscale ultrafine powder is provided, comprising: a solid-gas mixing cylinder, a positive voltage cylinder, a negative voltage cylinder, a positive and negative ion collision tube, and a centrifuge. The solid-gas mixing cylinder is provided with a feed inlet, which is used to input coarse animal bone particles and oxygen to form a solid-gas mixed airflow. The solid-gas mixing cylinder is connected to the positive voltage cylinder and the negative voltage cylinder respectively; The positive voltage cylinder ionizes oxygen in the solid-gas mixture into positive ions, and the negative voltage cylinder ionizes oxygen in the solid-gas mixture into negative ions. The positive voltage cylinder and the negative voltage cylinder are connected at their discharge ports. The solid-gas mixture with positive ions and the solid-gas mixture with negative ions converge at the discharge port and enter the positive and negative ion impact tube. In the positive and negative ion impact tube, the solid-gas mixture with positive ions and the solid-gas mixture with negative ions collide violently. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of the animal bone into ultrafine powder. The positive and negative ion impact tube is connected to the centrifuge, and the centrifuge is provided with a recovery port and a discharge port. The recovery port is connected to the solid-gas mixing cylinder through the coarse particle recovery tube. The ultrafine powder is screened by the centrifuge. When the particle size of the ultrafine powder is less than or equal to the preset size, the ultrafine powder flows out through the discharge port. When the particle size of the ultrafine powder is greater than the preset size, the ultrafine powder re-enters the solid-gas mixing cylinder through the coarse particle recovery pipe for further pulverization.

[0008] A second aspect of this invention provides a method for preparing nanoscale ultrafine powder, applied to the aforementioned apparatus for preparing nanoscale ultrafine powder, comprising: S1: High-pressure airflow is used to input coarse animal bone particles and oxygen from the feed inlet into the solid-gas mixing cylinder; S2: The coarse particles of animal bone are thoroughly mixed with oxygen to form a solid-gas mixture flow. S3: The solid-gas mixture flow is fed into the positive voltage cylinder and the negative voltage cylinder respectively; S4: The oxygen in the solid-gas mixture is ionized into positive ions by the positive voltage cylinder, and the oxygen in the solid-gas mixture is ionized into negative ions by the negative voltage cylinder; S5: The solid-gas mixture with positive ions and the solid-gas mixture with negative ions collide violently in the positive and negative ion impact tube. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of the animal bone into ultrafine powder. S6: The ultrafine powder is screened by a centrifuge. When the particle size of the ultrafine powder is less than or equal to the preset size, the ultrafine powder flows out through the discharge port. When the particle size of the ultrafine powder is greater than the preset size, the ultrafine powder re-enters the solid-gas mixing cylinder through the coarse particle recovery pipe for further crushing.

[0009] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this embodiment of the invention, a strong collision occurs between a solid-gas mixture with a positive ion state and a solid-gas mixture with a negative ion state. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of animal bones into finer ultrafine powder, thereby improving the absorption rate of calcium particles by the human body. Attached Figure Description

[0010] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of a device for preparing nanoscale ultrafine powder provided in an embodiment of the present invention; Figure 2 This is a scanning electron microscope image of a nanoscale ultrafine powder provided in an embodiment of the present invention; Figure 3 This is a schematic flowchart of a method for preparing nanoscale ultrafine powder provided in an embodiment of the present invention.

[0012] Explanation of reference numerals in the attached diagram: 1-Solid-gas mixing cylinder; 2-Positive voltage cylinder; 3-Negative voltage cylinder; 4-Positive and negative ion impact tube; 5-Centrifuge. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0014] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this invention.

[0015] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.

[0016] Reference manual attached Figure 1The diagram shows a schematic diagram of a device for preparing nanoscale ultrafine powder according to an embodiment of the present invention.

[0017] The present invention provides an apparatus for preparing nanoscale ultrafine powder, comprising: a solid-gas mixing cylinder 1, a positive voltage cylinder 2, a negative voltage cylinder 3, a positive and negative ion impacting tube 4, and a centrifuge 5.

[0018] The solid-gas mixing cylinder 1 is provided with a feed inlet, which is used to input coarse animal bone particles and oxygen to form a solid-gas mixed airflow.

[0019] The solid-gas mixing cylinder 1 is connected to the positive voltage cylinder 2 and the negative voltage cylinder 3 respectively.

[0020] The positive voltage cylinder 2 ionizes the oxygen in the solid-gas mixture into a positive ion state, and the negative voltage cylinder 3 ionizes the oxygen in the solid-gas mixture into a negative ion state.

[0021] The discharge port of the positive voltage cylinder 2 is connected to the discharge port of the negative voltage cylinder 3. The solid-gas mixture with positive ions and the solid-gas mixture with negative ions converge at the discharge port and enter the positive and negative ion impact tube 4. In the positive and negative ion impact tube 4, the solid-gas mixture with positive ions and the solid-gas mixture with negative ions collide violently. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of the animal bone into ultrafine powder.

[0022] The positive and negative ion impact tube 4 is connected to the centrifuge 5. The centrifuge 5 is provided with a recovery port and a discharge port. The recovery port is connected to the solid-gas mixing cylinder 1 through the coarse particle recovery tube.

[0023] The ultrafine powder is screened by the centrifuge 5. When the particle size of the ultrafine powder is less than or equal to the preset size, the ultrafine powder flows out through the discharge port. When the particle size of the ultrafine powder is greater than the preset size, the ultrafine powder re-enters the solid-gas mixing cylinder 1 through the coarse particle recovery pipe for further crushing.

[0024] Those skilled in the art can set the size of the preset size according to the actual situation. This invention does not limit the size. Optionally, the preset size is 9 nm.

[0025] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this embodiment of the invention, a strong collision occurs between a solid-gas mixture with a positive ion state and a solid-gas mixture with a negative ion state. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of animal bones into finer ultrafine powder, thereby improving the absorption rate of calcium particles by the human body.

[0026] In one possible implementation, the volume ratio of the coarse animal bone particles to the oxygen input into the feed inlet of the solid-gas mixing cylinder 1 is 1:3.

[0027] It should be noted that the number of hydroxyapatite (HAP) molecules on the surface of 1 volume of 100-nanometer-scale coarse particles is approximately the same as the number of oxygen molecules in 3 volumes, thus maximizing the efficiency of positive and negative ion binding energy. An excessively high oxygen ratio results in a larger cylinder capacity and higher costs; conversely, an excessively low oxygen ratio reduces the proportion of hydroxyapatite molecules on the coarse particle surface that are torn apart, leading to lower efficiency.

[0028] Optionally, the solid-gas mixing cylinder 1 is made of insulating and high-pressure resistant silicone rubber material.

[0029] Optionally, the flow velocity of the solid-gas mixture gas flow entering the feed port of the solid-gas mixing cylinder 1 is greater than 10 m / s.

[0030] Optionally, the positive voltage cylinder 2 and the negative voltage cylinder 3 have the same pipe diameter.

[0031] Optionally, the diameter of the positive voltage cylinder 2 and the negative voltage cylinder 3 is one-quarter of the diameter of the feed inlet.

[0032] It should be noted that by reducing the diameter of the positive voltage cylinder 2 and the negative voltage cylinder 3 compared to the diameter of the feed inlet, the flow rate of the solid-gas mixture can be increased.

[0033] Optionally, the flow velocity of the solid-gas mixture in the outlet of the positive voltage cylinder 2 and the negative voltage cylinder 3 is greater than 40 m / s.

[0034] Optionally, the apparatus for preparing nanoscale ultrafine powder also includes a transformer and a rectifier.

[0035] The transformer steps up the 220V AC power to 220kV AC power. The transformer is electrically connected to the rectifier, which rectifies the 220kV AC power to 220kV DC power. The positive terminal of the rectifier is connected to the tungsten electrode of the positive voltage cylinder 2, and the negative terminal of the rectifier is connected to the graphite electrode of the negative voltage cylinder 3.

[0036] Optionally, the angle between the discharge ports of the positive voltage cylinder 2 and the negative voltage cylinder 3 is 90 degrees.

[0037] Optionally, the angle between the discharge port of the positive voltage cylinder 2 and the discharge port of the negative voltage cylinder 3 and the horizontal line is 45 degrees, so that the angle between the discharge ports of the positive voltage cylinder 2 and the negative voltage cylinder 3 is 90 degrees.

[0038] It should be noted that when a solid-gas mixture with positive ions collides with a solid-gas mixture with negative ions at a 90-degree angle, the impact force generated by the combination of positive and negative ions can be fully utilized, while no reaction force is generated.

[0039] Reference manual attached Figure 2 The image shows a scanning electron microscope (SEM) image of a nanoscale ultrafine powder provided in an embodiment of the present invention.

[0040] A scanning electron microscope (SEM) of model SU8010 was used with an accelerating voltage of 5.0 kV. The sample was nanoscale ultrafine powder collected at the outlet. The distance from the sample to the objective aperture was 14.0 mm, and the secondary electron image was obtained at a magnification of 18,000x. According to the principle of secondary electron imaging, the secondary electron yield is high on protruding parts. Since the sample particles protrude from the surface, they appear as bright images in the secondary electron image, especially at the edges of the particles.

[0041] like Figure 2 As shown, the sample particles have a relatively uniform size distribution, ranging from 3 nm to 9 nm. Some particles are larger, which is due to the aggregation effect of nanoscale particles.

[0042] Reference manual attached Figure 3 The diagram shows a flow chart of a method for preparing nanoscale ultrafine powder according to an embodiment of the present invention.

[0043] This invention provides a method for preparing nanoscale ultrafine powder, applied to the aforementioned nanoscale ultrafine powder preparation apparatus, comprising: S1: High-pressure airflow is used to input coarse animal bone particles and oxygen from the feed inlet into the solid-gas mixing cylinder.

[0044] S2: The coarse particles of animal bone are thoroughly mixed with oxygen to form a solid-gas mixture flow.

[0045] S3: The solid-gas mixture is fed into the positive voltage cylinder and the negative voltage cylinder respectively.

[0046] S4: The oxygen in the solid-gas mixture is ionized into a positive ion state by the positive voltage cylinder, and the oxygen in the solid-gas mixture is ionized into a negative ion state by the negative voltage cylinder.

[0047] S5: The solid-gas mixture with positive ions and the solid-gas mixture with negative ions collide violently in the positive and negative ion impact tube. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of the animal bone into ultrafine powder.

[0048] S6: The ultrafine powder is screened by a centrifuge. When the particle size of the ultrafine powder is less than or equal to the preset size, the ultrafine powder flows out through the discharge port. When the particle size of the ultrafine powder is greater than the preset size, the ultrafine powder re-enters the solid-gas mixing cylinder through the coarse particle recovery pipe for further crushing.

[0049] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this embodiment of the invention, a strong collision occurs between a solid-gas mixture with a positive ion state and a solid-gas mixture with a negative ion state. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of animal bones into finer ultrafine powder, thereby improving the absorption rate of calcium particles by the human body.

[0050] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the preferred embodiments, while those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the protection scope of the present invention.

Claims

1. An apparatus for preparing nanoscale ultrafine powder, characterized in that, include: Solid-gas mixing cylinder, positive voltage cylinder, negative voltage cylinder, positive and negative ion impact tubes, and centrifuge; The solid-gas mixing cylinder is provided with a feed inlet, which is used to input coarse animal bone particles and oxygen to form a solid-gas mixed airflow. The solid-gas mixing cylinder is connected to the positive voltage cylinder and the negative voltage cylinder respectively; The positive voltage cylinder ionizes oxygen in the solid-gas mixture into positive ions, and the negative voltage cylinder ionizes oxygen in the solid-gas mixture into negative ions. The discharge port of the positive voltage cylinder is connected to the discharge port of the negative voltage cylinder. The solid-gas mixture with positive ions and the solid-gas mixture with negative ions converge at the discharge port and enter the positive and negative ion impact tube. In the positive and negative ion impact tube, the solid-gas mixture with positive ions and the solid-gas mixture with negative ions collide violently. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of the animal bone into ultrafine powder. The positive and negative ion impact tube is connected to the centrifuge, and the centrifuge is provided with a recovery port and a discharge port. The recovery port is connected to the solid-gas mixing cylinder through the coarse particle recovery tube. The ultrafine powder is screened by the centrifuge. When the particle size of the ultrafine powder is less than or equal to the preset size, the ultrafine powder flows out through the discharge port. When the particle size of the ultrafine powder is greater than the preset size, the ultrafine powder re-enters the solid-gas mixing cylinder through the coarse particle recovery pipe for further pulverization. The preparation device for nanoscale ultrafine powder also includes: a transformer and a rectifier; The transformer steps up 220V AC to 220kV AC. The transformer is electrically connected to the rectifier. The rectifier rectifies 220kV AC to 220kV DC. The positive terminal of the rectifier is connected to the tungsten electrode of the positive voltage cylinder, and the negative terminal of the rectifier is connected to the graphite electrode of the negative voltage cylinder. The angle between the discharge ports of the positive voltage cylinder and the negative voltage cylinder is 90 degrees.

2. The apparatus for preparing nanoscale ultrafine powder according to claim 1, characterized in that, The volume ratio of the coarse animal bone particles to the oxygen input into the feed inlet of the solid-gas mixing cylinder is 1:

3.

3. The apparatus for preparing nanoscale ultrafine powder according to claim 1, characterized in that, The flow velocity of the solid-gas mixture gas flow entering the feed port of the solid-gas mixing cylinder is greater than 10 m / s.

4. The apparatus for preparing nanoscale ultrafine powder according to claim 1, characterized in that, The positive voltage cylinder and the negative voltage cylinder have the same pipe diameter.

5. The apparatus for preparing nanoscale ultrafine powder according to claim 1, characterized in that, The diameter of the positive voltage cylinder and the negative voltage cylinder is one-quarter of the diameter of the feed inlet.

6. The apparatus for preparing nanoscale ultrafine powder according to claim 1, characterized in that, The flow velocity of the solid-gas mixture in the outlet of the positive voltage cylinder and the negative voltage cylinder is greater than 40 m / s.

7. The apparatus for preparing nanoscale ultrafine powder according to claim 1, characterized in that, The preset size is specifically 9 nm.

8. A method for preparing nanoscale ultrafine powder, applied to the apparatus for preparing nanoscale ultrafine powder according to any one of claims 1 to 7, characterized in that, include: S1: High-pressure airflow is used to input coarse animal bone particles and oxygen from the feed inlet into the solid-gas mixing cylinder; S2: The coarse particles of animal bone are thoroughly mixed with oxygen to form a solid-gas mixture flow. S3: The solid-gas mixture flow is fed into the positive voltage cylinder and the negative voltage cylinder respectively; S4: The oxygen in the solid-gas mixture is ionized into positive ions by the positive voltage cylinder, and the oxygen in the solid-gas mixture is ionized into negative ions by the negative voltage cylinder; S5: The solid-gas mixture with positive ions and the solid-gas mixture with negative ions collide violently in the positive and negative ion impact tube. The large amount of energy released when the positive and negative ions combine pulverizes the coarse particles of the animal bone into ultrafine powder. S6: The ultrafine powder is screened by a centrifuge. When the particle size of the ultrafine powder is less than or equal to the preset size, the ultrafine powder flows out through the discharge port. When the particle size of the ultrafine powder is greater than the preset size, the ultrafine powder re-enters the solid-gas mixing cylinder through the coarse particle recovery pipe for further crushing.

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