A zirconium powder grinder

Abstract

The application relates to a zirconium powder grinder, and relates to the technical field of grinding equipment. In order to solve the problem of grinding quality of the existing grinding equipment, the zirconium powder grinder comprises a rack, a shell is arranged on the rack, a feeding hopper is arranged at the top of the shell, a grinding mechanism is arranged in the shell, the grinding mechanism comprises a cylinder, a grinding screw and a driving motor, the cylinder is arranged in the shell, the inlet end of the cylinder corresponds to the feeding hopper, the grinding screw is rotationally connected in the cylinder, the output end of the driving motor is connected to the end of the grinding screw, a primary sieve cylinder is coaxially arranged at the outlet end of the cylinder, coarse sieve holes are arranged in the circumferences of the primary sieve cylinder, a guide plate is obliquely arranged below the primary sieve cylinder, a discharge plate is arranged below the tail end of the guide plate, a fine sieve plate is arranged on the discharge plate, fine sieve holes are arranged on the fine sieve plate, and a material collecting box is arranged below the fine sieve plate. The application has the effect of significantly improving product uniformity and qualified rate.

Description

Technical Field

[0001] This application relates to the field of grinding equipment technology, and in particular to a zircon powder grinding machine. Background Technology

[0002] Zircon powder is a natural mineral powder with zircon as its main component. Due to its high hardness, high temperature resistance, corrosion resistance, and low coefficient of thermal expansion, it is widely used in high-end ceramics, refractory materials, aerospace coatings, and the nuclear industry. With the development of materials science, the demand for finer zircon powder is increasing, placing higher requirements on grinding processes.

[0003] In large-scale production, existing zircon powder grinding equipment mostly relies on fixed sieve cylinders for particle classification. However, the design of the sieve hole size has problems: if the sieve hole is too large, although it can reduce the risk of clogging, it will cause large particles to enter the finished product without being fully ground, significantly reducing powder uniformity and product qualification rate; if the sieve hole is too small, although it can strictly limit the upper limit of particle size, the high hardness of zircon powder will easily cause wear on the edge of the sieve hole. At the same time, the strong agglomeration characteristics of nano-sized particles will accelerate the sieve surface clogging, causing frequent equipment shutdowns for cleaning. Therefore, improvements are needed. Utility Model Content

[0004] To address the grinding quality issues of existing grinding equipment, this application provides a zircon powder grinding mill.

[0005] The zircon powder grinding mill provided in this application adopts the following technical solution:

[0006] A zircon powder grinding mill includes a frame, a housing mounted on the frame, a feed hopper at the top of the housing, and a grinding mechanism inside the housing. The grinding mechanism includes a cylinder, a grinding screw, and a drive motor. The cylinder is arranged inside the housing, with its inlet end corresponding to the feed hopper. The grinding screw is rotatably connected to the cylinder, and the output end of the drive motor is connected to the end of the grinding screw. A primary sieve cylinder is coaxially mounted at the outlet end of the cylinder, with coarse sieve holes circumferentially arranged on the primary sieve cylinder. A guide plate is inclined below the primary sieve cylinder, and a discharge plate is located below the end of the guide plate. A fine sieve plate with fine sieve holes is mounted on the discharge plate, and a collection box is located below the fine sieve plate.

[0007] Because existing methods rely heavily on fixed screen cylinders for particle grading, the screen aperture design has problems: if the aperture is too large, although it can reduce the risk of clogging, it will cause large particles to enter the finished product without being fully ground, significantly reducing powder uniformity and product qualification rate; if the aperture is too small, although it can strictly limit the upper limit of particle size, the high hardness of zircon powder will easily cause wear on the edge of the aperture, and the strong agglomeration characteristics of nano-sized particles will accelerate the clogging of the screen surface, causing frequent equipment shutdowns for cleaning; by adopting the above technical solution, including a frame, a shell mounted on the frame, a feed hopper installed on the top of the shell, and a grinding mechanism inside the shell, the grinding mechanism includes a cylinder, a grinding screw and a drive motor, a primary screen cylinder coaxially installed at the outlet end of the cylinder, a guide plate located below the primary screen cylinder, and a discharge plate installed below the guide plate, with a fine screen plate located on the discharge plate;

[0008] When grinding zircon raw materials, the zircon raw materials are fed into the feed hopper and enter the cylinder under the action of gravity and vibration. They are squeezed and sheared by the high-speed rotating grinding screw and the inner wall of the cylinder to complete the grinding. The ground material exits from the primary screen cylinder at the cylinder outlet. The coarse screen holes around the primary screen cylinder intercept the larger unqualified particles and continue grinding. After the qualified particles pass through the coarse screen holes, they slide down the inclined guide plate to the discharge plate. The fine screen plate (fine screen holes) embedded on it performs secondary fine screening of the material. Zircon powder that meets the target particle size falls into the semi-enclosed collection box below through the fine screen holes and is finally discharged to the external storage tank. The coarser particles that are not screened out by the fine screen plate slide down the surface of the discharge plate and are returned to the feed hopper to participate in the next round of grinding.

[0009] By setting up a grinding mechanism, a primary screen cylinder, and a fine screen plate, the system achieves efficient operation of grinding, multi-stage screening, and circulating return material, ensuring that all materials are fully ground to the target particle size, significantly improving product uniformity and pass rate. It effectively solves the problems of low product pass rate and frequent maintenance caused by the contradiction of screen hole size in traditional fixed screen cylinders (large screen holes cause large particles to mix in, and small screen holes are prone to clogging and wear), thus balancing production efficiency and equipment stability.

[0010] Optionally, an emergency unloading assembly is provided on one side of the discharge plate. The emergency unloading assembly includes a discharge gate and a discharge cylinder. The discharge gate is connected to one side of the discharge plate and arranged parallel to the discharge plate. The discharge cylinder is arranged inside the housing, and the output end of the discharge cylinder is connected to the discharge gate.

[0011] By adopting the above technical solution, the emergency unloading component is installed on one side of the discharge plate. The emergency unloading component includes a discharge gate and a discharge cylinder. The setting of the emergency unloading component realizes rapid response under abnormal working conditions. The discharge gate is arranged parallel to the side of the discharge plate. During normal production, it is tightly engaged with the discharge plate by the edge wedge block to ensure that the material is screened by the fine screen plate according to the process. When the fine screen plate is blocked, and it is necessary to temporarily adjust the production or quickly clean the equipment, the discharge cylinder drives the discharge gate to rotate, so that it disengages from the discharge plate. The unscreened material is directly discharged from the emergency outlet below along the channel formed by the discharge gate and the shell, which significantly shortens the abnormal handling time and improves the emergency handling capability of the equipment.

[0012] Optionally, the edges of the unloading gate and the discharge plate are respectively provided with interlocking wedge-shaped blocks.

[0013] By adopting the above technical solution, the unloading gate and the discharge plate are engaged with each other by wedge blocks. In case of emergency (such as blockage of the fine screen plate, need for rapid equipment cleaning, or temporary adjustment of production requirements), the emergency unloading function is activated. The unloading cylinder drives the unloading gate connected to it to rotate, so that the wedge blocks on the edge of the unloading gate and the discharge plate disengage. The unscreened material no longer passes through the fine screen plate, but is directly discharged from the emergency outlet under the shell along the channel formed by the unloading gate and the shell, realizing rapid unloading. The wedge block setting realizes the efficient cooperation between the unloading gate and the discharge plate, significantly reducing the risk of leakage during normal use, and meeting the rapid operation requirements in emergency scenarios.

[0014] Optionally, the discharge plate has an inclination angle of 30-45°, and a rib seat is provided on the housing, with the rib seat arranged at the bottom of the discharge plate.

[0015] By adopting the above technical solution, the tilt angle of the discharge plate is 30-45°, and the discharge plate is fixed in the shell by the stiffener seat. Through the tilt angle of the discharge plate and the setting of the stiffener seat, the tilt of the discharge plate makes full use of gravity, so that the material after coarse screening by the primary screen cylinder can slide naturally and smoothly down the inclined surface to the fine screen plate area. This avoids material accumulation due to too small an angle or excessive sliding speed due to too large an angle, which would affect the screening effect of the fine screen plate. At the same time, the stiffener seat rigidly supports and distributes the overall weight of the discharge plate and the material, preventing the discharge plate from deforming due to long-term load or equipment vibration.

[0016] Optionally, the discharge plate has a through-hole mounting groove, and the fine screen plate is embedded in the mounting groove.

[0017] By adopting the above technical solution, the fine screen plate can be detachably installed on the discharge plate through the mounting groove. The detachable installation method simplifies the replacement and cleaning of the screen plate, allows for quick removal of the old screen plate and installation of the new screen plate, shortens maintenance downtime, and improves production continuity.

[0018] Optionally, the collection box has a semi-enclosed structure, with the collection box facing the grinding area as a closed end and the collection box facing away from the grinding area as an open end, and the collection box is provided with bolts for fixing to the discharge plate.

[0019] By adopting the above technical solution, the collection box has a semi-enclosed structure. The shape of the collection box effectively blocks the possibility of dust spreading into the collection box, preventing dust from mixing into the screened qualified zircon powder, thus ensuring the purity of the final product. The open end is convenient for direct connection with external storage equipment (such as storage tanks), reducing the risk of leakage during transportation.

[0020] Optionally, a vibrating motor is provided on the side wall of the feed hopper, and an airflow purging assembly is provided inside the housing. The airflow purging assembly includes a high-pressure blower, which is arranged in the direction of unloading.

[0021] By adopting the above technical solution, the vibrating motor is installed on the side wall of the feed hopper, and the airflow purging assembly is installed inside the shell. The airflow purging assembly includes a high-pressure blower. Through the setting of the vibrating motor and the airflow purging assembly, the vibrating motor effectively breaks the adhesion or bridging of zircon raw materials on the hopper wall through periodic vibration, ensuring that the raw materials continuously and evenly enter the grinding zone of the cylinder under the action of gravity, thereby improving the stability of the feeding process. At the same time, the high-pressure blower can disperse the dust agglomeration that may be generated during the unloading process, reducing the accumulation of dust in the shell. On the other hand, it also helps the substandard coarse particles to slide smoothly down the discharge plate to the return path.

[0022] Optionally, a dustproof baffle is provided at the end of the housing, and the dustproof baffle is arranged above the discharge plate.

[0023] By adopting the above technical solution, a dust baffle is installed at the end of the shell. The dust baffle effectively intercepts the upward diffusion of dust generated during the material sliding process, preventing dust from escaping into the external environment through the opening at the end of the shell, significantly reducing the dust concentration in the workshop and improving the working hygiene conditions.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up a grinding mechanism, a primary screen cylinder, and a fine screen plate, the system achieves efficient operation of grinding, multi-stage screening, and circulating return material, ensuring that all materials are fully ground to the target particle size, significantly improving product uniformity and pass rate. It effectively solves the problems of low product pass rate and frequent maintenance caused by the contradiction of screen hole size in traditional fixed screen cylinders (large screen holes cause large particles to mix in, and small screen holes are prone to clogging and wear), thus balancing production efficiency and equipment stability.

[0026] 2. By setting up an emergency unloading component, rapid response under abnormal working conditions is achieved. The unloading gate is arranged parallel to the side of the discharge plate. During normal production, it is tightly engaged with the discharge plate by edge wedge blocks to ensure that the material is screened by the fine screen plate according to the process. When the fine screen plate is blocked, production needs to be temporarily adjusted or the equipment needs to be cleaned quickly, the unloading cylinder drives the unloading gate to rotate, so that it disengages from the discharge plate. The unscreened material is directly discharged from the emergency outlet below along the channel formed by the unloading gate and the shell, which significantly shortens the abnormal handling time and improves the emergency handling capability of the equipment.

[0027] 3. By setting up a rapping motor and an airflow purging component, the rapping motor effectively breaks up the adhesion or bridging of zircon raw materials on the bucket wall through periodic vibration, ensuring that the raw materials continuously and evenly enter the grinding zone of the cylinder under the action of gravity, thus improving the stability of the feeding process; at the same time, the high-pressure blower can disperse the dust agglomeration that may be generated during the unloading process, reducing the accumulation of dust in the shell, and on the other hand, it helps the substandard coarse particles to slide smoothly down the discharge plate to the return path. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a zircon powder grinding mill according to an embodiment of this application.

[0029] Figure 2 This is a cross-sectional view of a zircon powder grinding mill according to an embodiment of this application.

[0030] Figure 3 This is a structural schematic diagram illustrating the connection relationship between the fine sieve plate and the discharge plate in the embodiments of this application.

[0031] Figure 4 This is a structural diagram illustrating the connection relationship between the material collection box and the discharge plate in the embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Shell; 3. Feed hopper; 4. Grinding mechanism; 41. Cylinder; 42. Grinding screw; 43. Drive motor; 5. Primary screen cylinder; 51. Coarse screen hole; 6. Guide plate; 7. Discharge plate; 8. Fine screen plate; 81. Fine screen hole; 9. Collection box; 10. Emergency unloading assembly; 101. Unloading gate; 102. Unloading cylinder; 11. Wedge block; 12. Rib plate seat; 13. Mounting groove; 14. Vibrating motor; 15. Airflow purging assembly; 16. Dustproof baffle. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0034] This application discloses a zircon powder grinding mill. (Refer to...) Figure 1The zircon powder grinding mill includes a frame 1, on which a housing 2 is installed. The housing 2 can be fixed to the frame 1 by bolts, etc. A feed hopper 3 is installed on the top of the housing 2. Zircon raw materials are fed into the feed hopper 3. At the same time, a vibrating motor 14 is installed on the outer wall of the feed hopper 3. The vibrating motor 14 effectively breaks the adhesion or bridging of zircon raw materials on the hopper wall through periodic vibration.

[0035] Reference Figure 2 The housing 2 is equipped with a grinding mechanism 4, which includes a cylinder 41, a grinding screw 42 and a drive motor 43. The cylinder 41 is installed inside the housing 2 and has a hollow structure. The inlet end of the cylinder 41 corresponds to the feed hopper 3. Zircon raw materials fed from the feed hopper 3 enter the cylinder 41. The grinding screw 42 is rotatably connected to the cylinder 41 through a bearing. The drive motor 43 is installed outside the housing 2 and the output end of the drive motor 43 is connected to the end of the grinding screw 42. The drive motor 43 is used to drive the grinding screw 42 to rotate.

[0036] Reference Figure 2 A primary screen cylinder 5 is coaxially sleeved at the outlet end of the cylinder 41. The primary screen cylinder 5 has coarse screen holes 51 circumferentially opened. In this embodiment, the zircon raw material is squeezed and sheared by the high-speed rotating grinding screw 42 against the inner wall of the cylinder 41 to complete the grinding. The ground material exits from the primary screen cylinder 5 at the outlet of the cylinder 41. The coarse screen holes 51 circumferentially open the primary screen cylinder 5 to intercept and grind the unqualified particles with larger particle sizes. The qualified particle size material is discharged through the coarse screen holes 51.

[0037] Reference Figure 2 and Figure 3 A guide plate 6 is installed at an incline below the primary screen cylinder 5, and a fine screen plate 8 is installed on the discharge plate 7. The fine screen plate 8 has fine screening holes 81. In this embodiment, the guide plate is installed inside the housing 2, and the discharge plate 7 is installed below the end of the guide plate. The inclination angle of the discharge plate 7 is 30-45°, preferably 30°. At the same time, a rib seat 12 is welded and fixed on the housing 2, and the rib seat 12 supports the bottom of the discharge plate 7. The inclination of the discharge plate 7 makes full use of gravity, so that the material after coarse screening by the primary screen cylinder 5 slides naturally and smoothly down the inclined surface to the area of ​​the fine screen plate 8. This avoids material accumulation due to too small an angle or excessive sliding speed due to too large an angle, which would affect the screening effect of the fine screen plate 8. At the same time, the rib seat 12 rigidly supports and distributes the overall weight of the discharge plate 7 and the material, preventing the discharge plate 7 from deforming due to long-term load or equipment vibration.

[0038] Reference Figure 2 and Figure 3 The discharge plate 7 has a through-hole mounting groove 13, and the fine screen plate 8 is embedded in the mounting groove 13. The detachable installation method simplifies the replacement and cleaning of the screen plate, and allows for quick removal of the old screen plate and installation of the new screen plate, shortening maintenance downtime and improving production continuity.

[0039] Reference Figure 2 and Figure 4 Below the fine sieve plate 8, a collection box 9 is installed. The collection box 9 has a semi-enclosed structure. The end of the collection box 9 facing the grinding area is closed, and the end of the collection box 9 facing away from the grinding area is open. The collection box 9 is equipped with bolts for fixing to the discharge plate 7. The closed end effectively prevents dust from spreading into the collection box 9, avoiding dust from mixing into the screened qualified zircon powder and ensuring the purity of the final product. The open end facilitates direct connection with external storage equipment (such as storage tanks), reducing the risk of leakage during transportation.

[0040] Reference Figure 2 The housing 2 is also equipped with an airflow purging assembly 15, which includes a high-pressure blower. The high-pressure blower is arranged in the direction of unloading. At the same time, the design of the airflow direction and angle of the high-pressure blower does not affect the material guiding path of the guide plate 6. The high-pressure blower can disperse the dust agglomeration that may be generated during the unloading process, reduce the dust accumulation in the housing 2, and on the other hand, assist the non-compliant coarse particles to slide smoothly down the discharge plate 7 to the return path.

[0041] Reference Figure 2 A dust baffle 16 is installed at the end of the housing 2. The dust baffle 16 is arranged above the discharge plate 7. In this embodiment, the dust baffle 16 can be adjusted in angle through the hinge seat, effectively intercepting the dust generated during the material sliding process and preventing the dust from escaping to the external environment through the opening at the end of the housing 2, significantly reducing the dust concentration in the workshop and improving the working hygiene conditions.

[0042] Reference Figure 2 An emergency unloading assembly 10 is installed on one side of the discharge plate 7. The emergency unloading assembly 10 includes an unloading gate 101 and an unloading cylinder 102. The unloading gate 101 is connected to one side of the discharge plate 7 and arranged parallel to the discharge plate 7. The unloading cylinder 102 is arranged inside the housing 2, and the output end of the unloading cylinder 102 is connected to the unloading gate 101.

[0043] Reference Figure 2 Meanwhile, the edges of the unloading gate 101 and the discharge plate 7 are respectively formed with interlocking wedge blocks 11. In case of emergency (such as blockage of the fine screen plate 8, need for quick equipment cleaning or temporary adjustment of production needs), the emergency unloading function is activated. The unloading cylinder 102 drives the unloading gate 101 connected to it to rotate, so that the wedge blocks 11 on the edge of the unloading gate 101 and the discharge plate 7 disengage. The unscreened material no longer passes through the fine screen plate 8, but is directly discharged from the emergency outlet under the shell 2 along the channel formed by the unloading gate 101 and the shell 2, realizing rapid unloading. This is to achieve efficient cooperation between the unloading gate 101 and the discharge plate 7, significantly reduce the risk of leakage during normal use, and meet the needs of rapid operation in emergency scenarios.

[0044] The implementation principle of a zircon powder grinding mill according to an embodiment of this application is as follows: When grinding zircon raw materials, the zircon raw materials are fed into the feed hopper 3 and enter the cylinder 41 under the action of gravity and vibration. They are squeezed and sheared by the high-speed rotating grinding screw 42 and the inner wall of the cylinder 41 to complete the grinding. The ground material exits from the primary screen cylinder 5 at the outlet of the cylinder 41. The coarse screen holes 51 on the circumference of the primary screen cylinder 5 intercept the unqualified particles with larger particle sizes for continuous grinding. The qualified particles pass through the coarse screen holes 51 and then... The inclined guide plate 6 slides down to the discharge plate 7, where the fine sieve plate 8 (fine sieve hole 81) embedded on it performs secondary fine sieving of the material. Zircon powder that meets the target particle size falls into the semi-enclosed collection box 9 below through the fine sieve hole 81 and is finally discharged to the external storage tank. The coarser particles that are not sieved by the fine sieve plate 8 slide down along the surface of the discharge plate 7 and are returned to the feed hopper 3 to participate in the next round of grinding. During this process, the airflow blowing component 15 blows airflow in the discharge direction to reduce dust accumulation.

[0045] By setting up the grinding mechanism 4, the primary screen cylinder 5, and the fine screen plate 8, the efficient operation of grinding-multi-stage screening-circulating return material is realized, ensuring that all materials are fully ground to the target particle size, significantly improving product uniformity and pass rate. It effectively solves the problems of low product pass rate and frequent maintenance caused by the contradiction of screen hole size in traditional fixed screen cylinders (large screen holes cause large particles to be mixed in, and small screen holes are easy to be blocked and worn), and takes into account both production efficiency and equipment stability.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A zircon powder grinding mill, characterized in that: The device includes a frame, on which a housing is mounted. A feed hopper is located at the top of the housing. A grinding mechanism is located inside the housing. The grinding mechanism includes a cylinder, a grinding screw, and a drive motor. The cylinder is arranged inside the housing, with its inlet end corresponding to the feed hopper. The grinding screw is rotatably connected inside the cylinder. The output end of the drive motor is connected to the end of the grinding screw. A primary screen cylinder is coaxially mounted at the outlet end of the cylinder. The primary screen cylinder has coarse screening holes circumferentially. A guide plate is inclined below the primary screen cylinder. A discharge plate is located below the end of the guide plate. A fine screening plate is mounted on the discharge plate, with fine screening holes. A collection box is located below the fine screening plate.

2. The zircon powder grinding mill according to claim 1, characterized in that: An emergency unloading assembly is provided on one side of the discharge plate. The emergency unloading assembly includes an unloading gate and an unloading cylinder. The unloading gate is connected to one side of the discharge plate and arranged parallel to the discharge plate. The unloading cylinder is arranged inside the housing, and the output end of the unloading cylinder is connected to the unloading gate.

3. A zircon powder grinding mill according to claim 2, characterized in that: The edges of the unloading gate and the discharge plate are respectively provided with interlocking wedge-shaped blocks.

4. A zircon powder grinding mill according to claim 1, characterized in that: The discharge plate has an inclination angle of 30-45°, and a rib seat is provided on the shell, which is arranged at the bottom of the discharge plate.

5. A zircon powder grinding mill according to claim 1, characterized in that: The discharge plate has a through-hole mounting groove, and the fine screen plate is embedded in the mounting groove.

6. A zircon powder grinding mill according to claim 5, characterized in that: The collection box has a semi-enclosed structure, with the closed end facing the grinding area and the open end facing away from the grinding area. The collection box is equipped with bolts for fixing to the discharge plate.

7. A zircon powder grinding mill according to claim 1, characterized in that: The feed hopper is equipped with a vibrating motor on its side wall, and an airflow purging assembly is installed inside the housing. The airflow purging assembly includes a high-pressure blower, which is arranged in the direction of unloading.

8. A zircon powder grinding mill according to claim 7, characterized in that: A dustproof baffle is provided at the end of the housing, and the dustproof baffle is arranged above the discharge plate.

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