Grinding device for nanomaterial preparation

Abstract

The application relates to the technical field of grinding devices, and discloses a grinding device for nanometer material preparation, which comprises a grinding box, a feeding cone cylinder installed on the top of the grinding box, a supporting frame and a discharging valve pipe installed on the bottom of the grinding box, and grinding assemblies are sleeved on the inner side of the top and the inner side of the bottom of the grinding box. The composite transition material cylinder, the first adjusting cone disc, the second adjusting cone disc and the bidirectional output assembly are arranged to form a reciprocating opening and closing transition space, the powder raw material after one-stage grinding can be sealed and temporarily stored after being combined with two grinding assemblies, the powder raw material is further operated by cooperating with the air blowing pump, the air guide valve pipe, the air separation filter screen and the flow guide pipe, air separation and filtration are carried out, the qualified powder raw material is collected by the collecting component, the operation load of the second-stage grinding is reduced, the operation amount is relatively reduced, and the operation time is relatively shortened.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, specifically to a grinding equipment for preparing nanomaterials. Background Technology

[0002] Nanoscale structural materials, or nanomaterials for short, refer to materials whose structural units are between 1 nanometer and 100 nanometers in size. Since their size is close to the coherence length of electrons, their properties change greatly due to the self-organization caused by strong coherence. Furthermore, their scale is close to the wavelength of light, and they have the special effect of large surface area. Therefore, their properties, such as melting point, magnetism, optics, thermal conductivity, and electrical conductivity, are often different from the properties exhibited by the material in its overall state, thus enabling them to be widely used.

[0003] Currently, in the preparation of nanomaterials, grinding is an essential step in the initial raw material processing. With continuous optimization of related technologies, existing technologies have also disclosed multi-stage grinding devices that differ from traditional methods. For example, patent application number 202021575277.4 discloses "a fully automatic grinding device for preparing nanomaterials, comprising a primary grinding chamber, a secondary grinding chamber, and a tertiary grinding chamber, wherein the secondary grinding chamber is located below the primary grinding chamber, and the tertiary grinding chamber is located below the secondary grinding chamber." After implementation, "a servo motor drives the lower grinding disc to rotate at high speed, grinding the material placed between the lower and upper grinding discs. When the lower grinding disc rotates, centrifugal force is generated, causing the material to continuously move outwards. The properly ground material is thrown out through the gap between the lower and upper grinding discs." Unqualified materials continue to be ground until they are qualified. Qualified materials from the first-stage grinding chamber are fed into the second-stage grinding chamber via a conveyor plate. The gap between the lower and upper grinding discs inside the second-stage grinding chamber is smaller than that inside the first-stage grinding chamber, resulting in a better grinding effect. Similarly, the grinding effect of the third-stage grinding chamber is greater than that of the second-stage grinding chamber. This progressive grinding process leads to more uniform grinding and better grinding quality. However, in actual grinding, the material is not broken down uniformly, and some powdery raw materials may reach the expected processing target. For these powdery materials, the existing technology still sends them to the next stage of grinding. Although this ultimately achieves the processing target, the overall processing technology involves significant wasted effort, resulting in longer processing times and greater wear on each grinding stage, which is not conducive to optimizing the overall grinding process. Summary of the Invention

[0004] This invention provides a grinding apparatus for preparing nanomaterials, which solves the problems mentioned in the prior art.

[0005] This invention provides the following technical solution: a grinding device for preparing nanomaterials, comprising a grinding box, a feeding cone mounted on the top of the grinding box, a support frame mounted on the bottom of the grinding box, and a discharge valve pipe. Grinding components are fitted on the inner sides of the top and bottom of the grinding box, and the grinding precision of the two grinding components gradually increases from top to bottom. A composite transition material cylinder is fitted on the inner side of the middle part of the grinding box, located between the two grinding components. The composite transition material cylinder is fitted with a first adjusting cone, a second adjusting cone, and a bidirectional output component. The two output ends of the bidirectional output component are respectively connected to the first adjusting cone and the second adjusting cone. Under the drive of the bidirectional output component, the first adjusting cone and the second adjusting cone can respectively seal the middle space and the bottom space of the composite transition material cylinder. The top of the grinding chamber is equipped with an air pump and an air guide valve pipe. The two ends of the air guide valve pipe are connected to the output end of the air pump and respectively fitted inside the middle of the composite transition material cylinder. A guide pipe is fitted on one side of the middle of the composite transition material cylinder, and an air classifier filter screen is nested inside one end of the guide pipe. The other end of the guide pipe passes through the grinding chamber and extends to the outside of the grinding chamber. A material collection component is fitted on the other end of the guide pipe, and an air outlet is opened on the material collection component.

[0006] Selectedly, both grinding components include a fixed annular grinding disc, a moving grinding disc, and a motor output component. The composite transition material cylinder is fixedly sleeved inside the grinding box. The two fixed annular grinding discs are respectively fixedly installed on the inner wall of the top of the grinding box and fixedly installed on the surface of the bottom of the composite transition material cylinder. The fixed annular grinding disc is aligned with the corresponding moving grinding disc to form a grinding gap.

[0007] Selectedly, both motor output components consist of an outer support box and a drive motor. The output end of the drive motor passes through the corresponding outer support box and is connected to the center of the corresponding moving grinding disc. A support rod is fixedly connected between the surface of the outer support box and the inner wall of the grinding box.

[0008] Preferably, the bidirectional output assembly includes a support sleeve, inside which are fitted a first electric push rod and a second electric push rod with opposite output directions. The output ends of the first and second electric push rods respectively penetrate the top structure of the support sleeve and the bottom structure of the bidirectional output assembly, and are then connected to the middle of the second adjusting cone and the middle of the first adjusting cone respectively, thereby realizing automated operation. An auxiliary rod is fixedly connected between the surface of the support sleeve and the inner wall of the composite transition cylinder to ensure stability in subsequent use.

[0009] Specifically, sealing rings are provided at the fitting points of the output end of the first electric push rod and the support sleeve, and at the fitting points of the output end of the second electric push rod and the support sleeve, to improve the sealing effect of the connection between the two. In addition, the second adjusting cone can be locked and sealed with the inner wall of the middle part of the composite transition cylinder, and the first adjusting cone can be locked and sealed with the inner wall of the bottom of the composite transition cylinder.

[0010] Specifically, the material collection component includes a first internally threaded sleeve, a filter bag, and a second internally threaded sleeve. The open end of the filter bag is fixedly sleeved on the outside of one end of the first internally threaded sleeve. The surface of the other end of the guide tube is provided with external threads. The other end of the first internally threaded sleeve can be threadedly connected to the surface of the other end of the guide tube. The surface of the first internally threaded sleeve is also provided with external threads. The second internally threaded sleeve completely fits the filter bag and is threadedly connected to the surface of the first internally threaded sleeve. The material collection component can cooperate with the guide tube to collect the powder material screened by the combined operation of the air pump, air valve pipe, and air classifier filter.

[0011] The second internal threaded sleeve has a limiting sleeve plate that is fixedly sleeved on the surface of the other end of the guide tube, thereby limiting the connection length between the second internal threaded sleeve and the guide tube. The air outlet is opened on the top of the other end of the second internal threaded sleeve.

[0012] Specifically, the outer side of the air classifier filter screen is provided with a clogging removal component. The clogging removal component includes a transition air cylinder, a first connecting air pipe, a second connecting air pipe, and a drive shaft. One end of the first connecting air pipe is fixedly sleeved to the top of the transition air cylinder, and one end of the second connecting air pipe is fixedly sleeved to the bottom of the transition air cylinder. One end of the drive shaft is sleeved on the inner side of the middle of the transition air cylinder through a bearing, and a fan blade that is movably sleeved inside the transition air cylinder is fixedly connected to the surface of one end of the drive shaft. The other end of the drive shaft is fixedly connected to a scraper that can fit and connect with one side of the air classifier filter screen. The clogging removal component utilizes the airflow output from the material collection component for secondary transmission, thereby assisting in cleaning the filtration surface of the air classifier filter screen and ensuring the long-term high-efficiency filtration effect of the air classifier filter screen.

[0013] The fan blades and scrapers are set in the same number and are both no less than two, respectively ensuring the transmission effect and the scraping and cleaning effect. The other end of the first connecting air pipe and the other end of the second connecting air pipe both penetrate one side wall of the grinding box and extend to the outside of the grinding box. The end of the other end of the first connecting air pipe is snapped into the air outlet.

[0014] The second internal threaded sleeve is fitted with an internal threaded limiting sleeve that engages with the other end of the first connecting air pipe on the outer side of the other end. The surface of the other end of the second internal threaded sleeve is provided with an external thread. The interior of the internal threaded limiting sleeve can be threadedly connected to the surface of the other end of the second internal threaded sleeve. The locking of the internal threaded limiting sleeve with the second internal threaded sleeve enhances the connection strength between the first connecting air pipe and the air outlet.

[0015] The present invention has the following beneficial effects: 1. This invention uses a composite transition cylinder, a first adjusting cone, a second adjusting cone, and a bidirectional output component to form a reciprocating openable and closed transition space. When combined with two grinding components, it can seal and temporarily store the powder raw material after primary grinding. Then, with the help of the provided air pump, air valve pipe, air classifier filter, and guide pipe, it performs further processing, such as air classification filtration. This allows the qualified powder raw material to be pre-collected using the provided material collection component, reducing the workload of subsequent secondary grinding and resulting in a relatively reduced workload and shorter processing time, thus fully solving the problems existing in the prior art.

[0016] 2. This invention further combines the anti-clogging component with the air classifier filter, the material collection component, and the guide pipe. The kinetic energy of the air classifier airflow discharged from the material collection component is used to drive the fan blades inside the anti-clogging component to rotate the drive shaft. At the same time, the scraper rotates synchronously under the drive of the drive shaft to simultaneously scrape and clean the filtering surface of the air classifier filter, maintaining the long-term high-efficiency filtering effect of the air classifier filter. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional view of the structure of the present invention; Figure 2 This is a front view schematic diagram of the structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of the bidirectional output component of the present invention; Figure 4 This is a cross-sectional schematic diagram of the material collection component of the present invention; Figure 5 This is an enlarged schematic diagram of the composite transition cylinder structure of the present invention; Figure 6 This is a partial cross-sectional schematic diagram of the unblocking component of the present invention.

[0018] In the diagram: 1. Grinding box; 2. Feeding cone; 3. Support frame; 4. Discharge valve pipe; 5. Grinding assembly; 51. Fixed annular grinding disc; 52. Moving grinding disc; 53. Motor output assembly; 6. Composite transition cylinder; 7. First adjusting cone; 8. Second adjusting cone; 9. Bidirectional output assembly; 91. Support sleeve; 92. First electric push rod; 93. Second electric push rod; 10. Guide pipe; 11. Material collection component; 111. First internal threaded sleeve; 112. Filter bag; 113. Second internal threaded sleeve; 12. Air pump; 13. Air guide valve pipe; 14. Unblocking assembly; 141. Transition air cylinder; 142. First connecting air pipe; 143. Second connecting air pipe; 144. Drive shaft; 145. Fan blade; 146. Scraper; 15. Internal threaded limit sleeve; 16. Air separator filter. Detailed Implementation

[0019] The technical solutions of the embodiments 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, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Please see Figure 1-5 A grinding device for preparing nanomaterials includes a grinding box 1, a feeding cone 2 installed on the top of the grinding box 1, a support frame 3 installed on the bottom of the grinding box 1, and a discharge valve pipe 4. Grinding components 5 are installed on the inner sides of the top and bottom of the grinding box 1, and the grinding precision of the two grinding components 5 gradually increases from top to bottom. A composite transition material cylinder 6 located between the two grinding components 5 is installed on the inner side of the middle of the grinding box 1. Each of the two grinding components 5 includes a fixed annular grinding disc 51, a moving grinding disc 52, and a motor output component 53. The composite transition material cylinder 6 is fixedly fitted inside the grinding box 1. The two fixed annular grinding discs 51 are respectively fixedly installed on the inner wall of the top of the grinding box 1 and fixedly installed on the surface of the bottom of the composite transition material cylinder 6. The fixed annular grinding disc 51 is aligned with the corresponding moving grinding disc 52 and forms a grinding gap. Each of the two motor output components 53 consists of an outer support box and a drive motor. The output end of the drive motor passes through the corresponding outer support box and is connected to the middle of the corresponding moving grinding disc 52. A support rod is fixedly connected between the surface of the outer support box and the inner wall of the grinding box 1. The composite transition cylinder 6 is internally fitted with a first adjusting cone 7, a second adjusting cone 8, and a bidirectional output assembly 9. The two output ends of the bidirectional output assembly 9 are respectively connected to the first adjusting cone 7 and the second adjusting cone 8. Under the drive of the bidirectional output assembly 9, the first adjusting cone 7 and the second adjusting cone 8 can respectively close the middle space and the bottom space of the composite transition cylinder 6. The bidirectional output assembly 9 includes a support sleeve 91. Inside the support sleeve 91 are a first electric push rod 92 and a second electric push rod 93 with opposite output directions. The output ends of the first electric push rod 92 and the second electric push rod 93 pass through the top structure of the support sleeve 91 and the bottom structure of the bidirectional output assembly 9, respectively, and are then connected to the middle of the second adjusting cone 8 and the middle of the first adjusting cone 7, respectively, to achieve automated operation. An auxiliary rod is fixedly connected between the surface of the support sleeve 91 and the inner wall of the composite transition cylinder 6 to ensure stability in subsequent use. Sealing rings are provided at the fitting points of the first electric push rod 92 and the second electric push rod 93 and the support sleeve 91 to improve the sealing effect of the connection. The second adjusting cone 8 can be locked and sealed with the inner wall of the middle part of the composite transition cylinder 6, and the first adjusting cone 7 can be locked and sealed with the inner wall of the bottom part of the composite transition cylinder 6. The top of the grinding box 1 is equipped with an air pump 12 and an air guide valve pipe 13. The two ends of the air guide valve pipe 13 are connected to the output end of the air pump 12 and are fitted inside the middle of the composite transition material cylinder 6. A guide pipe 10 is fitted on one side of the middle of the composite transition material cylinder 6, and an air classifier filter screen 16 is nested inside one end of the guide pipe 10. The other end of the guide pipe 10 passes through the grinding box 1 and extends to the outside of the grinding box 1. A material collection component 11 is fitted on the other end of the guide pipe 10, and an air outlet is opened on the material collection component 11. The collecting component 11 includes a first internally threaded sleeve 111, a filter bag 112, and a second internally threaded sleeve 113. The open end of the filter bag 112 is fixedly sleeved on the outside of one end of the first internally threaded sleeve 111. The surface of the other end of the guide tube 10 is provided with an external thread. The other end of the first internally threaded sleeve 111 can be threadedly connected to the surface of the other end of the guide tube 10. The surface of the first internally threaded sleeve 111 is also provided with an external thread. The second internally threaded sleeve 113 completely fits the filter bag 112 and is connected to the first internally threaded sleeve 113. The threaded sleeve 111 has a threaded connection on its surface, and the material collection component 11 can cooperate with the guide pipe 10 to collect the powder material screened by the combined operation of the air pump 12, the air valve pipe 13, and the air classifier filter 16. One end face of the second internal threaded sleeve 113 is fitted with a limiting sleeve plate that is fixedly sleeved on the surface of the other end of the guide pipe 10, thereby limiting the connection length between the second internal threaded sleeve 113 and the guide pipe 10. The air outlet is opened on the top of the other end of the second internal threaded sleeve 113.

[0021] Working principle: When in use, the second electric push rod 93 is activated, causing the output end of the second electric push rod 93 to drive the first adjusting cone 7 to move down to the inner space at the bottom of the composite transition material cylinder 6, thus sealing the bottom space of the composite transition material cylinder 6. At this time, the first electric push rod 92 is already in the open state. Then, a certain amount of raw material to be processed is fed into the space between the fixed annular grinding disc 51 and the moving grinding disc 52 at the top of the grinding box 1 through the feeding cone 2. Then, the drive motor in the motor output component 53 corresponding to the moving grinding disc 52 is activated, causing the drive motor to drive the moving grinding disc 52 to rotate cyclically. In conjunction with the discharge valve pipe 4, the raw material located between the discharge valve pipe 4 and the moving grinding disc 52 is ground. The ground raw material is centrifugally thrown out by the moving grinding disc 52 and, under the guidance of the composite transition material cylinder 6, is concentrated on the inner side of the bottom of the composite transition material cylinder 6. After the raw material is ground between the fixed annular grinding disc 51 and the moving grinding disc 52 at the top of the grinding box 1, the first electric push rod 92 is turned off, causing the first electric push rod 92 to drive the second adjusting cone disc 8 to move down, sealing the middle space of the composite transition cylinder 6. Then, the air pump 12 is started, and air is delivered from the output end of the air pump 12 to the inner side of the middle of the composite transition cylinder 6 through the air guide valve pipe 13. The powder raw material inside the composite transition cylinder 6 then flows with the airflow. The powder raw material that is of qualified size can enter the interior of the guide pipe 10 through the air classifier filter screen 16, and then be filtered and temporarily stored through the filter screen bag 112. The air is discharged through the air outlet in the second internal thread sleeve 113. This process is repeated to collect the raw material that does not need to be ground again in advance, reducing the need for subsequent grinding and compounding, and shortening the processing time. For the raw materials that still need to be ground again after filtering, the second electric push rod 93 is turned off, causing the second electric push rod 93 to drive the first adjusting cone 7 to move upward, making room for the bottom space of the composite transition material cylinder 6. Then, the powder raw material enters the space between the fixed annular grinding disc 51 and the moving grinding disc 52 at the bottom of the grinding box 1. Next, the drive motor in the motor output component 53 corresponding to the moving grinding disc 52 is started, causing the drive motor to drive the moving grinding disc 52 to rotate cyclically. In conjunction with the discharge valve pipe 4, the raw material located between the discharge valve pipe 4 and the moving grinding disc 52 is ground. The ground raw material is centrifugally thrown out by the moving grinding disc 52 and concentrated under the guidance of the bottom structure of the grinding box 1. Finally, it is collected through the discharge valve pipe 4. After the second-stage grinding begins, the second electric push rod 93 is activated, causing its output end to move the first adjusting cone 7 down into the inner space at the bottom of the composite transition cylinder 6, thus sealing the bottom space of the composite transition cylinder 6. Then, the first electric push rod 92 is activated, causing it to move the second adjusting cone 8 up, making room for the middle space of the composite transition cylinder 6. Then, the first-stage grinding is performed synchronously according to the initial steps. For the powder raw materials collected inside the collecting component 11, during the gap when not collecting, the first internal threaded sleeve 111 is screwed to disengage the first internal threaded sleeve 111 from the guide pipe 10, and then the raw materials collected inside the filter bag 112 are poured out.

[0022] Example 2 Please see Figure 1-6 A grinding device for preparing nanomaterials includes a grinding box 1, a feeding cone 2 installed on the top of the grinding box 1, a support frame 3 installed on the bottom of the grinding box 1, and a discharge valve pipe 4. Grinding components 5 are installed on the inner sides of the top and bottom of the grinding box 1, and the grinding precision of the two grinding components 5 gradually increases from top to bottom. A composite transition material cylinder 6 located between the two grinding components 5 is installed on the inner side of the middle of the grinding box 1. Each of the two grinding components 5 includes a fixed annular grinding disc 51, a moving grinding disc 52, and a motor output component 53. The composite transition material cylinder 6 is fixedly fitted inside the grinding box 1. The two fixed annular grinding discs 51 are respectively fixedly installed on the inner wall of the top of the grinding box 1 and fixedly installed on the surface of the bottom of the composite transition material cylinder 6. The fixed annular grinding disc 51 is aligned with the corresponding moving grinding disc 52 and forms a grinding gap. Each of the two motor output components 53 consists of an outer support box and a drive motor. The output end of the drive motor passes through the corresponding outer support box and is connected to the middle of the corresponding moving grinding disc 52. A support rod is fixedly connected between the surface of the outer support box and the inner wall of the grinding box 1. The composite transition cylinder 6 is internally fitted with a first adjusting cone 7, a second adjusting cone 8, and a bidirectional output assembly 9. The two output ends of the bidirectional output assembly 9 are respectively connected to the first adjusting cone 7 and the second adjusting cone 8. Under the drive of the bidirectional output assembly 9, the first adjusting cone 7 and the second adjusting cone 8 can respectively close the middle space and the bottom space of the composite transition cylinder 6. The bidirectional output assembly 9 includes a support sleeve 91. Inside the support sleeve 91 are a first electric push rod 92 and a second electric push rod 93 with opposite output directions. The output ends of the first electric push rod 92 and the second electric push rod 93 pass through the top structure of the support sleeve 91 and the bottom structure of the bidirectional output assembly 9, respectively, and are then connected to the middle of the second adjusting cone 8 and the middle of the first adjusting cone 7, respectively, to achieve automated operation. An auxiliary rod is fixedly connected between the surface of the support sleeve 91 and the inner wall of the composite transition cylinder 6 to ensure stability in subsequent use. Sealing rings are provided at the fitting points of the first electric push rod 92 and the second electric push rod 93 and the support sleeve 91 to improve the sealing effect of the connection. The second adjusting cone 8 can be locked and sealed with the inner wall of the middle part of the composite transition cylinder 6, and the first adjusting cone 7 can be locked and sealed with the inner wall of the bottom part of the composite transition cylinder 6. The top of the grinding box 1 is equipped with an air pump 12 and an air guide valve pipe 13. The two ends of the air guide valve pipe 13 are connected to the output end of the air pump 12 and are fitted inside the middle of the composite transition material cylinder 6. A guide pipe 10 is fitted on one side of the middle of the composite transition material cylinder 6, and an air classifier filter screen 16 is nested inside one end of the guide pipe 10. The other end of the guide pipe 10 passes through the grinding box 1 and extends to the outside of the grinding box 1. A material collection component 11 is fitted on the other end of the guide pipe 10, and an air outlet is opened on the material collection component 11. The collecting component 11 includes a first internally threaded sleeve 111, a filter bag 112, and a second internally threaded sleeve 113. The open end of the filter bag 112 is fixedly sleeved on the outside of one end of the first internally threaded sleeve 111. The surface of the other end of the guide tube 10 is provided with an external thread. The other end of the first internally threaded sleeve 111 can be threadedly connected to the surface of the other end of the guide tube 10. The surface of the first internally threaded sleeve 111 is also provided with an external thread. The second internally threaded sleeve 113 completely fits the filter bag 112 and is connected to the first internally threaded sleeve 113. The threaded sleeve 111 has a threaded connection on its surface. The material collection component 11 can cooperate with the guide pipe 10 to collect the powder material screened by the combined operation of the air pump 12, the air valve pipe 13, and the air classifier filter screen 16. One end face of the second internal threaded sleeve 113 is fitted with a limiting sleeve plate that is fixedly sleeved on the surface of the other end of the guide pipe 10, thereby limiting the connection length between the second internal threaded sleeve 113 and the guide pipe 10. The air outlet is opened on the top of the other end of the second internal threaded sleeve 113. An anti-clogging component 14 is provided on the outer side of the air classifier filter 16. The anti-clogging component 14 includes a transition air cylinder 141, a first connecting air pipe 142, a second connecting air pipe 143, and a drive shaft 144. One end of the first connecting air pipe 142 is fixedly sleeved to the top of the transition air cylinder 141, and one end of the second connecting air pipe 143 is fixedly sleeved to the bottom of the transition air cylinder 141. One end of the drive shaft 144 is sleeved on the inner side of the middle part of the transition air cylinder 141 through a bearing. A fan blade 145 that is movably sleeved inside the transition air cylinder 141 is fixedly connected to the surface of one end of the drive shaft 144. A scraper 146 that can fit and connect with one side of the air classifier filter 16 is fixedly connected to the surface of the other end of the drive shaft 144. The anti-clogging component 14 uses the airflow output from the material collection component 11 for secondary transmission, and then performs auxiliary cleaning on the filtration working surface of the air classifier filter 16 to ensure the long-term high-efficiency filtration effect of the air classifier filter 16. The number of fan blades 145 and scraper blades 146 is the same and not less than two, respectively ensuring the transmission effect and the scraping and cleaning effect. The other end of the first connecting air pipe 142 and the other end of the second connecting air pipe 143 both penetrate one side wall of the grinding box 1 and extend to the outside of the grinding box 1. The end of the other end of the first connecting air pipe 142 is engaged inside the air outlet. The other end of the second internal threaded sleeve 113 is fitted with an internal threaded limiting sleeve 15 that engages with the other end of the first connecting air pipe 142. The surface of the other end of the second internal threaded sleeve 113 is provided with an external thread. The inside of the internal threaded limiting sleeve 15 can be threadedly connected to the surface of the other end of the second internal threaded sleeve 113. The internal threaded limiting sleeve 15 cooperates with the locking of the second internal threaded sleeve 113 to improve the connection strength between the first connecting air pipe 142 and the air outlet.

[0023] Working principle: When in use, the second electric push rod 93 is activated, causing the output end of the second electric push rod 93 to drive the first adjusting cone 7 to move down to the inner space at the bottom of the composite transition material cylinder 6, thus sealing the bottom space of the composite transition material cylinder 6. At this time, the first electric push rod 92 is already in the open state. Then, a certain amount of raw material to be processed is fed into the space between the fixed annular grinding disc 51 and the moving grinding disc 52 at the top of the grinding box 1 through the feeding cone 2. Then, the drive motor in the motor output component 53 corresponding to the moving grinding disc 52 is activated, causing the drive motor to drive the moving grinding disc 52 to rotate cyclically. In conjunction with the discharge valve pipe 4, the raw material located between the discharge valve pipe 4 and the moving grinding disc 52 is ground. The ground raw material is centrifugally thrown out by the moving grinding disc 52 and, under the guidance of the composite transition material cylinder 6, is concentrated on the inner side of the bottom of the composite transition material cylinder 6. After the raw material grinding between the fixed annular grinding disc 51 and the moving grinding disc 52 at the top of the grinding chamber 1 is completed, the first electric push rod 92 is turned off, causing the first electric push rod 92 to drive the second adjusting cone disc 8 to move down, sealing the middle space of the composite transition cylinder 6. Then, the air pump 12 is started, and air is delivered from the output end of the air pump 12 to the inner side of the middle of the composite transition cylinder 6 through the air guide valve pipe 13. This causes the powder raw material inside the composite transition cylinder 6 to flow with the airflow. Powder raw material of qualified size can be filtered by the air classifier filter screen 16 and enter the interior of the guide pipe 10, and then pass through the filter bag 112. The air is temporarily filtered and stored. Air is discharged into the first connecting air pipe 142 through the air outlet in the second internal threaded sleeve 113, and then enters the transition air cylinder 141 to impact the drive shaft 144 and fan blade 145. The fan blade 145 drives the drive shaft 144 to rotate. At the same time, the scraper 146 rotates synchronously under the drive of the drive shaft 144 to simultaneously scrape and clean the filtering surface of the air classifier filter 16, maintaining the long-term high-efficiency filtering effect of the air classifier filter 16. Subsequently, this process is repeated to collect raw materials that do not need to be ground again in advance, reducing the need for subsequent grinding and compounding and shortening the processing time. For the raw materials that still need to be ground again after filtering, the second electric push rod 93 is turned off, causing the second electric push rod 93 to drive the first adjusting cone 7 to move upward, making room for the bottom space of the composite transition material cylinder 6. Then, the powder raw material enters the space between the fixed annular grinding disc 51 and the moving grinding disc 52 at the bottom of the grinding box 1. Next, the drive motor in the motor output component 53 corresponding to the moving grinding disc 52 is started, causing the drive motor to drive the moving grinding disc 52 to rotate cyclically. In conjunction with the discharge valve pipe 4, the raw material located between the discharge valve pipe 4 and the moving grinding disc 52 is ground. The ground raw material is centrifugally thrown out by the moving grinding disc 52 and concentrated under the guidance of the bottom structure of the grinding box 1. Finally, it is collected through the discharge valve pipe 4. After the second-stage grinding begins, the second electric push rod 93 is activated, causing its output end to move the first adjusting cone 7 down into the inner space at the bottom of the composite transition cylinder 6, thus sealing the bottom space of the composite transition cylinder 6. Then, the first electric push rod 92 is activated, causing it to move the second adjusting cone 8 up, making room for the middle space of the composite transition cylinder 6. Then, the first-stage grinding is performed synchronously according to the initial steps. For the powder raw materials collected inside the collecting component 11, during the gap when not collecting, the first internal threaded sleeve 111 is screwed to disengage the first internal threaded sleeve 111 from the guide pipe 10, and then the raw materials collected inside the filter bag 112 are poured out.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this invention, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grinding apparatus for preparing nanomaterials, comprising a grinding chamber (1), a feeding cone (2) mounted on the top of the grinding chamber (1), a support frame (3) mounted on the bottom of the grinding chamber (1), and a discharge valve pipe (4), characterized in that: Grinding components (5) are fitted on the inner sides of the top and bottom of the grinding box (1), and the grinding precision of the two grinding components (5) gradually increases from top to bottom. A composite transition cylinder (6) located between the two grinding components (5) is fitted on the inner side of the middle of the grinding box (1). The composite transition cylinder (6) is fitted with a first adjusting cone (7), a second adjusting cone (8), and a bidirectional output component (9). The two output ends of the bidirectional output component (9) are respectively connected to the first adjusting cone (7) and the second adjusting cone (8). Under the transmission of the bidirectional output component (9), the first adjusting cone (7) and the second adjusting cone (8) can respectively close the middle space and the bottom space of the composite transition cylinder (6). The bidirectional output assembly (9) includes a support sleeve (91). Inside the support sleeve (91) are fitted a first electric push rod (92) and a second electric push rod (93) with opposite output directions. The output ends of the first electric push rod (92) and the second electric push rod (93) pass through the top structure of the support sleeve (91) and the bottom structure of the bidirectional output assembly (9) respectively, and are then connected to the middle of the second adjusting cone (8) and the middle of the first adjusting cone (7) respectively. An auxiliary rod is fixedly connected between the surface of the support sleeve (91) and the inner wall of the composite transition cylinder (6). A sealing ring is provided at the fitting point between the output end of the first electric push rod (92) and the support sleeve (91), and at the fitting point between the output end of the second electric push rod (93) and the support sleeve (91). The second adjusting cone (8) can be locked and sealed with the inner wall of the middle part of the composite transition cylinder (6), and the first adjusting cone (7) can be locked and sealed with the inner wall of the bottom of the composite transition cylinder (6). The top of the grinding box (1) is provided with an air pump (12) and an air guide valve pipe (13). The two ends of the air guide valve pipe (13) are respectively connected to the output end of the air pump (12) and fitted inside the middle of the composite transition material cylinder (6). A guide pipe (10) is fitted on one side of the middle of the composite transition material cylinder (6), and an air separation filter screen (16) is nested inside one end of the guide pipe (10). The other end of the guide pipe (10) passes through the grinding box (1) and extends to the outside of the grinding box (1). A material collection component (11) is fitted on the other end of the guide pipe (10), and an air outlet is opened on the material collection component (11).

2. The grinding apparatus for preparing nanomaterials according to claim 1, characterized in that: Both grinding components (5) include a fixed annular grinding disc (51), a moving grinding disc (52), and a motor output component (53). The composite transition cylinder (6) is fixedly sleeved inside the grinding box (1). The two fixed annular grinding discs (51) are respectively fixedly installed on the inner wall of the top of the grinding box (1) and fixedly installed on the surface of the bottom of the composite transition cylinder (6). The fixed annular grinding disc (51) is aligned with the corresponding moving grinding disc (52) to form a grinding gap.

3. The grinding apparatus for preparing nanomaterials according to claim 2, characterized in that: Both of the motor output components (53) consist of an outer support box and a drive motor. The output end of the drive motor passes through the corresponding outer support box and is connected to the middle of the corresponding moving grinding disc (52). A support rod is fixedly connected between the surface of the outer support box and the inner wall of the grinding box (1).

4. The grinding apparatus for preparing nanomaterials according to claim 1, characterized in that: The material collection component (11) includes a first internal threaded sleeve (111), a filter bag (112), and a second internal threaded sleeve (113). The open end of the filter bag (112) is fixedly sleeved on the outside of one end of the first internal threaded sleeve (111). The surface of the other end of the guide tube (10) is provided with an external thread. The other end of the first internal threaded sleeve (111) can be threadedly connected to the surface of the other end of the guide tube (10). The surface of the first internal threaded sleeve (111) is also provided with an external thread. The second internal threaded sleeve (113) completely fits the filter bag (112) and is threadedly connected to the surface of the first internal threaded sleeve (111).

5. The grinding apparatus for preparing nanomaterials according to claim 4, characterized in that: One end face of the second internal threaded sleeve (113) is fitted with a limiting sleeve plate that is fixedly sleeved on the surface of the other end of the guide tube (10), and the air outlet is opened on the top of the other end of the second internal threaded sleeve (113).

6. The grinding apparatus for preparing nanomaterials according to claim 4, characterized in that: A blockage-clearing assembly (14) is provided on the outside of the air separation filter (16). The blockage-clearing assembly (14) includes a transition air cylinder (141), a first connecting air pipe (142), a second connecting air pipe (143), and a drive shaft (144). One end of the first connecting air pipe (142) is fixedly sleeved to the top of the transition air cylinder (141), and one end of the second connecting air pipe (143) is fixedly sleeved to the bottom of the transition air cylinder (141). One end of the drive shaft (144) is sleeved on the inner side of the middle part of the transition air cylinder (141) through a bearing. A fan blade (145) that is movably sleeved inside the transition air cylinder (141) is fixedly connected to the surface of one end of the drive shaft (144). A scraper (146) that can be attached to and connected to one side of the air separation filter (16) is fixedly connected to the surface of the other end of the drive shaft (144).

7. The grinding apparatus for preparing nanomaterials according to claim 6, characterized in that: The number of fan blades (145) and scrapers (146) is the same and not less than two. The other end of the first connecting air pipe (142) and the other end of the second connecting air pipe (143) both penetrate one side wall of the grinding box (1) and extend to the outside of the grinding box (1). The other end of the first connecting air pipe (142) is snapped into the air outlet.

8. The grinding apparatus for preparing nanomaterials according to claim 6, characterized in that: The other end of the second internal threaded sleeve (113) is fitted with an internal threaded limiting sleeve (15) that engages with the other end of the first connecting air pipe (142). The surface of the other end of the second internal threaded sleeve (113) is provided with an external thread, and the interior of the internal threaded limiting sleeve (15) can be threadedly connected to the surface of the other end of the second internal threaded sleeve (113).

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