A jet mill
By integrating crushing, screening, and coarse material recirculation, the problems of low production efficiency and easy contamination of product quality in existing rotary crushers have been solved, achieving high-efficiency production and the preparation of high-quality silicon powder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA WUPO SILICONE POWDER CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-05
AI Technical Summary
Existing rotary pulverizers have low production efficiency, their products are easily contaminated, they occupy a large space, consume a lot of energy, and have a long material circulation path.
The vibrating screening component is directly connected to the lower end face of the machine body, and the first discharge port is connected to the second feed port. The second discharge port is connected to the feed port on the side wall of the machine body through the feed return component, so as to realize the integrated processing of crushing, screening and coarse material return. Pneumatic vibrators and fans are used to assist in screening and feed return.
It reduces energy consumption and equipment space required for external material transportation, reduces pollution risks, and significantly improves production efficiency and product quality.
Smart Images
Figure CN224321523U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of silicon powder swirl crushing devices, specifically to a swirl crusher. Background Technology
[0002] Cyclone milling is one of the common methods for preparing silicon powder. Cyclone milling machines use the huge impact and shearing forces generated by the high-speed rotation of the cyclone blades to strongly impact, shear and grind the silicon raw materials, crushing the blocky or granular silicon materials into silicon powder of the required particle size.
[0003] In existing technologies, rotary pulverizers typically connect their discharge port to a bucket elevator. The pulverized mixture is then conveyed by the bucket elevator to a vibrating screen or sorting equipment for particle size screening. After sorting, the fine powder that meets the requirements enters the finished product bin, while the coarse material needs to be returned to the pulverizer's feed port via the bucket elevator or conveyor belt for secondary pulverization. This process not only increases the number of equipment and space required but also prolongs the material circulation path, leading to increased energy consumption and reduced production efficiency. Furthermore, the material may be contaminated by the external environment during multiple conveying and sorting processes, affecting product quality. Utility Model Content
[0004] The purpose of this utility model is to provide a rotary pulverizer that can improve production efficiency and product quality.
[0005] This application is achieved through the following technical solution, specifically:
[0006] A rotary pulverizer includes a body, a first discharge port at the bottom of the body, a return port on the side wall of the body, a top cover connected to the upper part of the body, and a vibrating screening assembly connected to the lower end face of the body. The body has a pulverizing chamber inside. The top of the top cover has symmetrically arranged first inlets communicating with the pulverizing chamber. A transmission assembly extending into the pulverizing chamber is installed at the center of the top cover, and a rotary cutter disc is sleeved at the lower end of the transmission assembly. The vibrating screening assembly includes a screening hopper, a second inlet at the top of the screening hopper, a second discharge port and a third discharge port respectively located on the side and bottom of the screening hopper. An inclined downward screen plate is arranged inside the screening hopper. The second discharge port is located on one side of the bottom of the screen plate and communicates with the return port via a return assembly.
[0007] In this solution, by directly connecting the vibrating screening component to the lower end face of the machine body, and setting the first discharge port to be connected to the second feed port, and the second discharge port to be connected to the return port on the side wall of the machine body through the return component, the integrated processing of crushing, screening and coarse material return is realized. This reduces the energy consumption and equipment space occupied by external material transportation, reduces the risk of pollution that materials may encounter during multiple transportation and transfer processes, and significantly improves production efficiency and product quality.
[0008] As an improvement to the return port in this application, the return port is tangentially opened on the side wall of the machine body, and the return port is located between the first feed port and the punching and rotating cutter head.
[0009] As an improvement to the vibrating screening assembly in this application, the vibrating screening assembly further includes a pneumatic vibrator installed on the side wall of the screening hopper.
[0010] Furthermore, the first discharge port of the machine body and the second feed port of the vibrating screening assembly are sealed and connected by a flexible connector.
[0011] Furthermore, the lower end face of the machine body is connected to the upper end face of the screening hopper by an elastic connector.
[0012] As an improvement to the transmission assembly in this application, the transmission assembly includes a motor, a spindle, and a bearing disposed on the spindle. The motor drives the spindle to rotate, and the punching and spinning cutter head is fixedly connected to the lower end of the spindle.
[0013] As an improvement to the material return assembly in this application, the material return assembly includes a conveying pipe connecting the second discharge port and the material return port, and a blower for returning materials.
[0014] The beneficial effects of this application are as follows:
[0015] The solution of this application integrates crushing, screening and coarse material return by directly connecting the vibrating screening component to the lower end face of the machine body, and setting the first discharge port to be connected to the second feed port, and the second discharge port to be connected to the return port on the side wall of the machine body through the return component. This reduces the energy consumption of external material transportation and the space occupied by the equipment, reduces the risk of pollution that the material may encounter during multiple transportation and transfer processes, and significantly improves production efficiency and product quality.
[0016] In addition to the technical problems solved by this utility model, the technical features constituting the technical solution, and the advantages brought about by the technical features of these technical solutions as described above, other technical problems that this utility model can solve, other technical features contained in the technical solution, and the advantages brought about by these technical features will be further explained in detail with reference to the accompanying drawings. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a rotary pulverizer according to an embodiment of this application;
[0018] Figure 2 This is a partial cross-sectional structural diagram of a rotary pulverizer according to an embodiment of this application.
[0019] Explanation of reference numerals in the attached figures:
[0020] 1. Machine body; 11. First discharge port; 12. Return port; 2. Top cover; 21. First feed port; 3. Vibrating screen assembly; 31. Screening hopper; 32. Second feed port; 33. Second discharge port; 34. Third discharge port; 35. Screen plate; 36. Pneumatic vibrator; 4. Transmission assembly; 41. Motor; 42. Main shaft; 5. Punching and rotating cutter disc; 6. Return assembly; 61. Conveying pipe; 62. Fan; 7. Flexible connector; 8. Elastic connector. Detailed Implementation
[0021] The following will be combined with the appendix Figure 1 and 2 The embodiments of the technical solution of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0022] In view of the problems existing in the background technology or products, Figure 1 A schematic diagram of a rotary pulverizer according to an embodiment of this application is shown. Figure 2 It shows Figure 1 A partial cross-sectional structural diagram. (See attached diagram.) Figure 1 and 2 As shown, this application provides a rotary pulverizer, including a machine body 1, a first discharge port 11 opened at the bottom of the machine body 1, a return port 12 opened on the side wall of the machine body 1, an upper cover 2 connected to the upper part of the machine body 1, and a vibrating screening assembly 3 connected to the lower end face of the machine body 1.
[0023] The machine body 1 has a crushing chamber inside. The top of the upper cover 2 has a first feed port 21 that communicates with the crushing chamber. A transmission component 4 that extends into the crushing chamber is installed at the top center. A punching and rotating cutter disc 5 is sleeved at the lower end of the transmission component 4. The vibrating screening component 3 includes a screening hopper 31, a second feed port 32 opened on the upper part of the screening hopper 31, a second discharge port 33 and a third discharge port 34 opened on the side and bottom of the screening hopper 31, respectively. The screening hopper 31 has an inclined screen plate 35 inside. The second discharge port 33 is opened on one side of the bottom of the screen plate 35 and is connected to the return port 12 through a return component 6.
[0024] Optionally, a butterfly valve for controlling the falling material is installed at the third discharge port 34.
[0025] In this embodiment, by directly connecting the vibrating screening component 3 to the lower end face of the machine body 1, and setting the first discharge port 11 to be connected to the second feed port 32, and the second discharge port 33 to be connected to the return port 12 on the side wall of the machine body 1 through the return component 6, the integrated processing of crushing, screening and coarse material return is realized, which reduces the energy consumption of external material transportation and the space occupied by the equipment, reduces the risk of pollution that materials may encounter during multiple transportation and transfer processes, and significantly improves production efficiency and product quality.
[0026] To optimize the material return effect and enable coarse materials to return to the crushing chamber for re-crushing more effectively, in a preferred embodiment of this application, the return port 12 is tangentially located on the side wall of the machine body 1. This tangential arrangement facilitates the movement of material along the inner wall of the crushing chamber and allows it to be better drawn into the working area of the rotary cutter disc 5. More preferably, the return port 12 is located vertically between the first feed port 21 and the rotary cutter disc 5. This arrangement ensures that the returned material directly enters the effective crushing area, avoiding accumulation or interference with newly fed material.
[0027] In one implementation, the vibrating screening assembly 3 further includes a pneumatic vibrator 36 installed on the side wall of the screening hopper 31.
[0028] Specifically, the pneumatic vibrator 36 can provide a continuous and stable vibration force, keeping the material on the screen plate 35 loose and in motion, improving screening efficiency, and preventing screen clogging. In addition to the pneumatic vibrator 36, other types of vibration sources, such as vibrating motors, can also be used.
[0029] Preferably, the first discharge port 11 of the machine body 1 and the second feed port 32 of the vibrating screening assembly 3 are sealed and connected by a flexible connector 7. The flexible connector 7, such as a canvas sleeve or a rubber sleeve, can compensate for minor displacements and vibrations between the two, ensuring the reliability and sealing of the connection.
[0030] Preferably, the lower end face of the machine body 1 and the upper end face of the screening hopper 31 are connected by an elastic connector 8. The elastic connector 8, such as a rubber pad or a spring, can play a role in vibration isolation and buffering, reducing the impact of the vibration generated by the vibrating screening assembly 3 during operation on the machine body 1 and its upper components (such as the transmission assembly 4), and ensuring the stability of the connection.
[0031] In one implementation, the transmission assembly 4 includes a motor 41, a main shaft 42, and bearings (not shown in the figure) mounted on the main shaft 42. The motor 41 drives the main shaft 42 to rotate, and the rotary cutter disc 5 is fixedly connected to the lower end of the main shaft 42. The motor 41 serves as a power source, driving the main shaft 42 to rotate at high speed via a coupling or pulley. The rotary cutter disc 5 rotates together with the main shaft 42, impacting, shearing, and grinding the material entering the crushing chamber.
[0032] In one implementation, the material return assembly 6 includes a conveying pipe 61 connecting the second discharge port 33 and the return port 12, and a blower 62 for returning materials. Figures 1-2 In the illustrated embodiment, the blower 62 generates a positive pressure airflow, which blows the coarse material discharged from the second discharge port 33 through the conveying pipe 61 to the return port 12 of the machine body 1, thereby realizing automatic material return.
[0033] The working process of this application embodiment is as follows:
[0034] Material enters the crushing chamber of machine body 1 through the first feed port 21 at the top of the cover 2. The transmission assembly 4 drives the rotary cutter disc 5 to rotate at high speed, subjecting the material to strong impact, shearing, and grinding, thereby crushing it. Under the action of gravity and / or airflow, the crushed material passes through the first discharge port 11 at the bottom of machine body 1 and enters the second feed port 32 of the vibrating screening assembly 3 below via the flexible connector 7, falling onto the inclined screen plate 35 in the screening hopper 31.
[0035] Under the action of the pneumatic vibrator 36, the screening hopper 31, together with the screen plate 35, vibrates. The material moves on the screen plate 35 and is screened: fine materials with a particle size smaller than the screen aperture pass through the screen plate 35 and are discharged from the third discharge port 34 at the bottom of the screening hopper 31 as finished products. Coarse materials with a particle size larger than the screen aperture remain on the screen plate 35 and move along the inclined screen plate 35 to the second discharge port 33 on one side of its bottom for discharge. The coarse materials discharged from the second discharge port 33 enter the return material assembly 6, and under the action of the blower 62, are sent back to the return material port 12 on the side wall of the machine body 1 through the conveying pipe 61, re-entering the crushing chamber, and are crushed again by the swirl cutter disc 5 together with the newly fed material. This cycle continues until all materials reach the required fineness and are discharged from the third discharge port 34.
[0036] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set", "equipped with", "connected", and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A rotary pulverizer, characterized in that, It includes a machine body (1), a first discharge port (11) opened at the bottom of the machine body (1), a return port (12) opened on the side wall of the machine body (1), an upper cover (2) connected to the upper part of the machine body (1), and a vibrating screening assembly (3) connected to the lower end face of the machine body (1). The machine body (1) is provided with a crushing chamber inside. The top of the upper cover (2) is symmetrically provided with a first feed port (21) connected to the crushing chamber. A transmission component (4) extending into the crushing chamber is installed at the top center. A punching and rotating cutter disc (5) is sleeved at the lower end of the transmission component (4). The vibrating screening component (3) includes a screening bucket (31), a second feed port (32) opened on the upper part of the screening bucket (31), a second discharge port (33) and a third discharge port (34) opened on the side and bottom of the screening bucket (31) respectively. The screening bucket (31) is provided with an inclined downward screen plate (35). The second discharge port (33) is opened on the bottom side of the screen plate (35) and is connected to the return port (12) through a return component (6).
2. The rotary pulverizer as described in claim 1, characterized in that, The return port (12) is tangentially opened on the side wall of the machine body (1), and the return port (12) is located between the first feed port (21) and the punching and spinning cutter disc (5).
3. The rotary pulverizer as described in claim 1, characterized in that, The vibrating screening assembly (3) also includes a pneumatic vibrator (36) installed on the side wall of the screening hopper (31).
4. A rotary pulverizer as described in claim 3, characterized in that, The first discharge port (11) of the machine body (1) and the second feed port (32) of the vibrating screening assembly (3) are sealed and connected by a flexible connector (7).
5. A rotary pulverizer as described in claim 3, characterized in that, The lower end face of the machine body (1) is connected to the upper end face of the screening hopper (31) by an elastic connector (8).
6. A rotary pulverizer as described in claim 1, characterized in that, The transmission assembly (4) includes a motor (41), a main shaft (42) and a bearing disposed on the main shaft (42). The motor (41) drives the main shaft (42) to rotate, and the punching and spinning cutter disc (5) is fixedly connected to the lower end of the main shaft (42).
7. A rotary pulverizer as described in claim 1, characterized in that, The return material assembly (6) includes a conveying pipe (61) connecting the second discharge port (33) and the return material port (12) and a blower (62) for returning materials.