Novel wollastonite powder airflow crushing classifier

Abstract

The utility model relates to the technical field of wollastonite powder processing, in particular to a novel wollastonite powder airflow pulverization classifier which comprises a classifier body, an inclined feeding pipe is arranged at the bottom end of the classifier body, a movable sleeve driven by an air cylinder is arranged at the end, located in the classifier body, of the feeding pipe in a sleeved mode, and the movable sleeve is connected with the air cylinder. A movable sleeve is arranged in the classifier body, a dynamic flow guide cover located at an inlet of a crushing chamber of the classifier body is installed on the movable sleeve, a fixing ring is arranged at the bottom end in the dynamic flow guide cover, a plurality of dispersion flow guide pieces are arranged on the fixing ring in a surrounding mode, and a plurality of turbulent flow fins are further arranged on the inner wall of the dynamic flow guide cover in a surrounding mode. According to the novel wollastonite powder airflow pulverization classifier, by optimizing the contact mode of materials and airflow, the pulverization efficiency is remarkably improved, deposition of the materials in equipment is effectively reduced, the cleaning process is simplified, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wollastonite powder processing technology, specifically a novel wollastonite powder airflow pulverizer and classifier. Background Technology

[0002] Wollastonite is a naturally occurring inorganic non-metallic mineral resource, widely used in plastics, rubber, coatings, and other industries due to its unique physicochemical properties. With increasing demands for fineness and uniformity in wollastonite powder, air jet milling technology has gained popularity because it can provide products with high fineness and narrow particle size distribution. Air jet milling utilizes high-speed airflow to cause materials to collide and rub against each other, achieving pulverization, and is particularly suitable for processing mineral materials with high hardness.

[0003] Existing airflow pulverization and classification equipment for wollastonite powder has some problems in practical applications. In particular, during the pulverization process, the contact method between the material and the airflow is not optimized, resulting in low pulverization efficiency. This suboptimal contact method not only limits production efficiency but also easily causes material to accumulate inside the equipment, increasing the difficulty of cleaning and maintenance costs. These problems highlight the necessity of structural improvements to existing equipment to improve pulverization efficiency and reduce maintenance requirements. Utility Model Content

[0004] The purpose of this invention is to provide a novel airflow pulverizer and classifier for wollastonite powder, in order to solve the problems mentioned in the background art, such as low pulverization efficiency caused by the insufficient optimization of the material-airflow contact method in current airflow pulverizers and classifiers for wollastonite powder, as well as the increased cleaning difficulty and maintenance costs caused by material deposition inside the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel airflow pulverizer and classifier for wollastonite powder, comprising a classifier body, an inclined feed pipe at the bottom of the classifier body, a movable sleeve driven by a cylinder at one end of the feed pipe inside the classifier body, a dynamic guide hood at the inlet of the pulverizing chamber of the classifier body installed on the movable sleeve, a fixed ring at the bottom inside the dynamic guide hood, a plurality of dispersing guide plates surrounding the fixed ring, and a plurality of turbulence fins surrounding the inner wall of the dynamic guide hood, the dispersing guide plates and the turbulence fins together forming a dispersion structure that optimizes the contact path between the material and the airflow.

[0006] Preferably, the two sides of the dispersing guide plate are uniformly provided with a plurality of recessed grooves, and the inner walls of the recessed grooves are all arc-shaped to increase the contact area between the material and the airflow and reduce resistance.

[0007] Preferably, the cross-section of the turbulence fin is an airfoil structure, and the turbulence fin is evenly distributed in a ring shape along the inner wall of the dynamic flow guide to enhance the dispersion effect of the material when it enters the crushing chamber and the degree of airflow turbulence.

[0008] Preferably, an elastic gasket is provided on the inner wall of the classifier body in the middle, and the outer wall of the outer end of the dynamic flow guide is in contact with the inner wall of the elastic gasket to ensure the sealing between the dynamic flow guide and the classifier body during the movement.

[0009] Preferably, the inner wall of the bottom end of the movable sleeve is symmetrically connected with rolling balls, and the outer walls of both sides of the vertical section of the feed pipe located inside the classifier body are provided with vertical ball grooves that cooperate with the ball structure, so as to realize the smooth up and down movement of the movable sleeve and reduce wear.

[0010] Preferably, a sealing ring is provided on the inner wall of the end where the movable sleeve is connected to the dynamic guide shroud, and the sealing ring is attached to the outer wall of the port of the feed pipe located inside the classifier body to prevent material leakage and maintain the system's airtightness.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This novel wollastonite powder airflow pulverizer and classifier significantly improves pulverization efficiency by optimizing the contact method between material and airflow, effectively reduces material deposition inside the equipment, simplifies the cleaning process, and lowers maintenance costs. Through the inclined design of the feed pipe and the dynamic adjustment function of the movable sleeve, combined with the unique structure of the dispersing guide vanes and turbulence fins, this novel wollastonite powder airflow pulverizer and classifier achieves the optimal path distribution of material entering the pulverizing chamber. This not only improves production efficiency but also greatly reduces material deposition inside the equipment, simplifies the cleaning process, and extends the service life of the equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a novel airflow pulverizer and classifier for wollastonite powder according to the present invention.

[0013] Figure 2 This is a schematic diagram of the connection structure between the movable sleeve and the feed pipe of a novel airflow pulverizer and classifier for wollastonite powder according to this utility model.

[0014] Figure 3 This is a schematic diagram of the dynamic flow guide structure of a novel wollastonite powder airflow pulverizer and classifier according to this utility model;

[0015] Figure 4 This is a schematic diagram of the dispersion guide plate structure of a novel wollastonite powder airflow pulverizer and classifier according to this utility model.

[0016] In the diagram: 1. Classifier body; 2. Feed pipe; 3. Movable sleeve; 4. Dynamic guide hood; 5. Elastic gasket; 6. Dispersing guide plate; 7. Fixing ring; 8. Turbulence fin; 9. Cylinder; 10. Sealing ring; 11. Ball bearing; 12. Recessed groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4This utility model provides a technical solution: a novel wollastonite powder airflow pulverizer and classifier, comprising a classifier body 1. The upper part of the classifier body 1 is provided with a pulverizing chamber and a classification chamber, which are responsible for pulverizing the material and classifying the particle size, respectively. An air guide pipe is also provided outside the classifier body 1 to guide the gas after pulverization and classification to the exhaust system or for recycling. An inclined feed pipe 2 is provided at the bottom of the classifier body 1. One end of the feed pipe 2 inside the classifier body 1 has a vertical section. A movable sleeve 3 driven by a cylinder 9 is fitted onto the vertical section of the feed pipe 2 inside the classifier body 1. The bottom end of the cylinder 9 is welded and fixed to the feed pipe 2 inside the classifier body 1 via a connecting block. On the outer wall of one end of the body 1, the output end of the cylinder 9 is fixedly connected to one side of the outer wall of the movable sleeve 3 via a connector. A dynamic guide shroud 4 located at the inlet of the crushing chamber of the classifier body 1 is installed on the movable sleeve 3. The connection between the dynamic guide shroud 4 and the movable sleeve 3 is fixed by welding. A fixing ring 7 is provided at the bottom of the inside of the dynamic guide shroud 4. Both outer walls of the fixing ring 7 are fixedly connected to the inner wall of the dynamic guide shroud 4 via connecting pieces. Several dispersing guide plates 6 are arranged around the fixing ring 7. The dispersing guide plates 6 and the fixing ring 7 can be connected by snap-fit ​​or adhesive. In addition, several turbulence fins 8 are also welded and fixed around the inner wall of the dynamic guide shroud 4. Together, they form a dispersion structure that optimizes the contact path between materials and airflow. When materials enter the classifier body 1 through the inclined feed pipe 2, the cylinder 9 can drive the dynamic guide hood 4 to move up and down via the movable sleeve 3, thereby adjusting the relative position between the dynamic guide hood 4 and the inlet of the crushing chamber of the classifier body 1. The dispersion guide plate 6 on the fixed ring 7 and the turbulence fin 8 on the inner wall of the dynamic guide hood 4 work together to optimize the contact path between materials and airflow, allowing the materials to be more evenly distributed and fully mixed with the airflow during the process of entering the crushing chamber. Specifically, the dispersion guide plate 6 not only helps to disperse materials but also further increases the contact area between materials and airflow, reducing resistance, while the turbulence fin 8 enhances the turbulence of the airflow, making the materials more fine and evenly distributed. This linkage The design ensures that the material remains in an optimal airflow environment throughout the entire crushing process, significantly improving crushing efficiency and effectively reducing material deposition inside the equipment. Compared to existing technologies where the material-airflow contact method is not ideal, resulting in low production efficiency and frequent cleaning and maintenance, this design significantly improves work efficiency, simplifies equipment cleaning, and reduces maintenance costs. The dispersing guide plate 6 has several evenly distributed recessed grooves 12 on both sides, and the inner walls of these grooves are all arc-shaped. This structure allows the material to flow more smoothly along the grooves when it comes into contact with the dispersing guide plate 6, increasing the contact area between the material and the airflow and reducing resistance during dispersion. This not only helps the dispersing guide plate 6 to disperse the material more evenly...Furthermore, it can guide the material to form a more ideal flow path, allowing it to better combine with the turbulence generated by the turbulence fins 8. The turbulence fins 8 have an airfoil structure in cross-section, and are evenly distributed in a ring shape along the inner wall of the dynamic guide shroud 4. This structure of the turbulence fins 8, through its special airfoil structure, can effectively increase the degree of airflow turbulence, so that the material and airflow are fully mixed and dispersed before entering the grinding chamber. Specifically, this not only promotes the passage of material between the turbulence fins 8, but also guides the airflow to form a complex flow pattern, further enhancing the interaction between the material and the airflow. An elastic washer 5 is bonded and fixed to the inner wall in the middle of the classifier body 1. Ring 5 can be made of a material with good elasticity and wear resistance, such as polyurethane or nitrile rubber. The outer wall of the outer end of the dynamic guide hood 4 is in contact with the inner wall of the elastic gasket 5. This structure ensures that when the dynamic guide hood 4 moves up and down under the drive of cylinder 9 to adjust its relative position to the inlet of the crushing chamber of the classifier body 1, the outer wall of the outer end of the dynamic guide hood 4 always remains in contact with the inner wall of the elastic gasket 5. This ensures good sealing even during the movement of the dynamic guide hood 4, preventing material leakage and unnecessary entry of outside air, thus guaranteeing the stability of the internal airflow. In other words, the elastic gasket 5 is soft and has a certain degree of elasticity. The dynamic guide shroud 4 provides appropriate cushioning and compensation during its movement, ensuring a tight fit without gaps regardless of its movement. The inner wall of the bottom of the movable sleeve 3 is symmetrically connected with rolling balls 11, and the outer walls of both sides of the vertical section of the feed pipe 2 located inside the classifier body 1 are provided with vertical ball grooves that cooperate with the structure of the rolling balls 11. When the movable sleeve 3 moves outside the vertical section of the feed pipe 2 located inside the classifier body 1, the movable sleeve 3 will engage with the vertical ball grooves on both sides of the vertical section of the feed pipe 2 through the rolling balls 11. This greatly reduces the friction between the movable sleeve 3 and the feed pipe 2, making the movable sleeve... The movement of sleeve 3 is smoother and more stable, ensuring that the movable sleeve 3 always moves precisely up and down along the predetermined trajectory during the movement, avoiding any possible deviation or jamming. A sealing ring 10 is bonded and fixed to the inner wall of the end where the movable sleeve 3 connects to the dynamic guide shroud 4, and the sealing ring 10 is attached to the outer wall of the port of the feed pipe 2 located inside the classifier body 1. This structure ensures that the sealing ring 10 always maintains contact with the outer wall of the feed pipe 2 port, effectively preventing material or gas from leaking from the gap between the movable sleeve 3 and the feed pipe 2. This ensures the stability of the airflow inside the equipment, allowing the material to be efficiently crushed and classified in the optimized airflow environment.

[0019] Working Principle: When using this new type of wollastonite powder airflow pulverizer and classifier, the material first enters the classifier body 1 through the inclined feed pipe 2 and moves along the vertical section of the feed pipe 2 towards the pulverizing chamber of the classifier body 1. When the material reaches the vertical section of the feed pipe 2 located at one end inside the classifier body 1, the cylinder 9 starts to drive the movable sleeve 3, causing it to roll along the vertical ball groove through the ball bearings 11. This drives the dynamic guide shroud 4 to move up and down to adjust its relative position with the inlet of the pulverizing chamber of the classifier body 1. At the same time, the sealing ring 10 ensures a tight fit between the movable sleeve 3 and the feed pipe 2, preventing material or gas leakage. As the dynamic guide shroud 4 moves, several dispersing guide plates 6 and turbulence fins 8 begin to initially disperse the incoming material. In the first step, the material is further guided into the grinding chamber by the dispersing guide plate 6. During this process, the material is not only evenly distributed, but also fully mixed with the airflow. After entering the grinding chamber, the material is pulverized to the required fineness by the high-speed airflow. The pulverized material, together with the airflow, enters the classification chamber of the classifier body 1. It is screened according to the different particle sizes. Powder that meets the requirements is discharged from the system or recycled through the external air guide pipe of the classifier body 1, while particles that do not meet the particle size requirements are sent back to the grinding chamber for further pulverization. Throughout the process, the elastic gasket 5 always maintains the seal between the dynamic guide hood 4 and the classifier body 1, ensuring the stability of the internal airflow and the smooth operation, thereby completing a series of tasks.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel wollastonite powder air flow classifier, comprising a classifier body (1), the bottom end of the classifier body (1) is provided with an inclined feed pipe (2), characterized in that: The feeding pipe (2) is sleeved with a movable sleeve (3) driven by a pneumatic cylinder (9) at one end inside the classifier body (1), the movable sleeve (3) is provided with a dynamic flow guide cover (4) at the inlet of the classifier body (1) crushing chamber, the bottom end of the dynamic flow guide cover (4) is provided with a fixed ring (7), the fixed ring (7) is provided with a plurality of dispersion flow guide vanes (6) around, and the inner wall of the dynamic flow guide cover (4) is also provided with a plurality of spoiler fins (8) around, the dispersion flow guide vanes (6) and the spoiler fins (8) together form a dispersion structure which optimizes the contact path of the material and the airflow.

2. A novel wollastonite powder air jet classifier as claimed in claim 1, wherein: The two side surfaces of the dispersion flow guide vane (6) are uniformly provided with a plurality of recessed grooves (12), and the inner wall of the recessed groove (12) is in circular arc surface structure.

3. A novel wollastonite powder air jet classifier as claimed in claim 1, wherein: The cross section of the spoiler fin (8) is in wing type structure, and the spoiler fin (8) is uniformly and parallelly distributed along the inner wall of the dynamic flow guide cover (4).

4. A novel wollastonite powder air jet classifier as claimed in claim 1, wherein: The inner wall of the middle of the classifier body (1) is provided with an elastic washer (5), and the outer wall of the outer end part of the dynamic flow guide cover (4) is attached to the inner wall of the elastic washer (5).

5. A novel wollastonite powder air jet classifier as claimed in claim 1, wherein: The inner wall of the bottom end of the movable sleeve (3) is symmetrically connected with a plurality of rolling balls (11), and the vertical sections of the feeding pipe (2) located at both sides of the inner wall of the classifier body (1) are provided with vertical ball grooves matched with the structure of the rolling balls (11).

6. A novel wollastonite powder air jet classifier as claimed in claim 1, wherein: The inner wall of one end of the movable sleeve (3) connected with the dynamic flow guide cover (4) is provided with a sealing ring (10), and the sealing ring (10) is attached to the outer wall of the port of the feeding pipe (2) located at one end inside the classifier body (1). The inner wall of one end of the movable sleeve (3) connected with the dynamic flow guide cover (4) is provided with a sealing ring (10), and the sealing ring (10) is attached to the outer wall of the port of the feeding pipe (2) located at one end inside the classifier body (1).

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