Powder concentrator capable of uniformly scattering materials
By incorporating internal pipes, circular baffles, connecting pipe rings, and screening cylinders within the air classifier, precise screening and grading of materials are achieved, solving the problem of coarse particles entering fine powder and improving the fineness of cement and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU PANSHI CEMENT CO LTD
- Filing Date
- 2025-04-02
- Publication Date
- 2026-05-12
AI Technical Summary
Existing air classifiers cannot guarantee that materials of different coarse and fine textures will be selected to a uniform fineness under the same wind speed, resulting in some coarse particles entering the fine powder and affecting the fineness and performance of cement.
The powder separator is equipped with an internal pipe and a circular baffle ring, which are connected to a connecting pipe ring and an isolation net. Combined with the screening cylinder and filter screen in the powder discharge device, the material is dispersed by a positive pressure fan to achieve precise screening and grading.
It improves the fineness and grading effect of materials, reduces the possibility of coarse powder entering fine powder, and improves the quality and production efficiency of cement.
Smart Images
Figure CN224222003U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of powder classifier technology, specifically to a powder classifier that uniformly spreads materials. Background Technology
[0002] Air classifiers play a crucial role in cement grinding processes. They not only select fine-particle materials, preventing abrasive agglomeration and adhesion problems, but also adjust cement consumption types in a timely manner to produce high-fineness cement, thereby improving grinding efficiency. Specifically, air classifiers, through their grading function, can separate materials into coarse powder, medium-coarse powder, and fine powder. This precise grading helps increase mill output, and their reasonable internal structure results in significant powder selection effects. Therefore, an air classifier with uniform material distribution is proposed.
[0003] The existing Chinese utility model patent with publication number CN213611702U discloses a powder classifier with uniform material distribution, belonging to the technical field of powder grading equipment. This technical solution includes a powder classifier housing, a main shaft, a drive motor, a material distribution disc, and a cage rotor. The main shaft is rotatably mounted inside the powder classifier. Both the material distribution disc and the cage rotor are fixedly connected to the main shaft. A cone-shaped material discharge plate is provided at the end of the material distribution disc away from the cage rotor. The cone-shaped material discharge plate is a frustum-shaped disc with openings at both ends along the axial direction. The feed inlet is located at the top of the cone-shaped material discharge plate. The main shaft passes through the center of the cone-shaped material discharge plate. Several first and second material discharge rods are arranged between the main shaft and the cone-shaped material discharge plate. The cone-shaped material discharge plate is fixedly connected to the main shaft through the first and second material discharge rods. The first and second material discharge rods are arranged circumferentially along the main shaft, with the first material discharge rods located at the top of the second material discharge plate. This application has the function of impacting and crushing partially agglomerated powder into finer powder, thereby facilitating the classification of powder of different particle sizes by the powder classifier, improving the classification effect, and reducing powder waste.
[0004] Based on the search of the aforementioned patents and the findings of existing equipment, it is discovered that traditional air classifiers cannot guarantee that materials of different coarseness will be selected into uniform fineness at the same wind speed. This results in some coarse particles potentially entering the fine powder, affecting the fineness and performance of the cement. These problems all affect the use of the equipment. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a uniformly spreading powder classifier, which has advantages such as precise material screening and solves the aforementioned technical problems.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a uniformly spreading powder classifier, comprising a powder classifier body, wherein a material uniform spreading mechanism is installed inside the powder classifier body, and a material screening mechanism is connected to the side of the powder classifier body. The material uniform spreading mechanism includes: an inner pipe installed inside the powder classifier body, a circular baffle ring for blocking coarser particles is seamlessly connected above the inner pipe, and a connecting pipe ring is circumferentially connected to the side of the circular baffle ring, and a fan is provided inside the circular baffle ring;
[0009] The material screening mechanism includes: a powder discharge device connected to the side of the powder separator body, a connecting pipe connected above the powder discharge device, a screening cylinder connected inside the powder discharge device, a filter screen for material screening provided at the bottom of the screening cylinder, a discharge port provided below the filter screen, and a fixing ring provided below the powder discharge device.
[0010] As a preferred embodiment of this utility model, the lower part of the classifier body is connected to an organic hopper, and a support frame is fixedly installed on the four sides of the bottom of the classifier body; the classifier body performs fineness screening on the material.
[0011] As a preferred embodiment of this utility model, the hopper is provided with an inner ring, and a positive pressure fan is provided inside the inner ring. A fixing block is fixedly installed on the outside of the inner ring; the fixing block fixes the equipment in place.
[0012] As a preferred technical solution of this utility model, the four sides of the classifier body are inlaid with side openings, and the connecting pipe ring is located horizontally behind the side openings. The end of the connecting pipe ring is provided with an isolation net. The classifier body is interconnected with the powder discharge device through the side openings. The connecting pipe ring discharges and conveys the material.
[0013] As a preferred embodiment of this utility model, the hopper is conical in shape, and the hopper is fixedly connected to the inner ring through a fixed block, and the midpoint of the positive pressure blower and the midpoint of the blower are located on the same horizontal line; the positive pressure blower conveys the material upward.
[0014] As a preferred embodiment of this utility model, the powder discharge device is connected to the powder classifier body via a connecting pipe, and the screening cylinder is interconnected with the discharge port via a filter screen. The powder discharge device is arranged in a ring shape at the midpoint of the powder classifier body; the filter screen further screens the material.
[0015] As a preferred embodiment of this utility model, the powder discharge device is located above the machine hopper, and six sets of powder discharge devices are provided; the powder discharge device performs different degrees of screening on the materials.
[0016] Compared with the prior art, this utility model provides a uniformly spreading air classifier, which has the following features:
[0017] Beneficial effects:
[0018] 1. This utility model has an internal pipe installed inside the powder classifier body, with a circular baffle ring connected to the top of the internal pipe. The circular baffle ring prevents coarse powder from entering and reduces the impact of coarse powder on the powder classification process. At the same time, a connecting pipe ring is connected to one side of the circular baffle ring. The connecting pipe ring is located behind the side opening, and an isolation net of different densities is installed behind the connecting pipe ring. This can prevent coarse powder from entering during material powder classification and increase the fineness of the equipment during powder classification.
[0019] 2. This utility model features a powder discharge device connected to the outside of the powder classifier body. The powder discharge device is connected to the powder classifier body via a connecting pipe. Inside the powder discharge device is a screening cylinder, and below the screening cylinder are a filter screen and a discharge port. When the powder discharge device discharges the material, the filter screen continues to further screen the material, blocking larger particles and ensuring the screening effect of the powder discharge device, thereby improving the fineness of the material. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the internal components of the air classifier body of this utility model;
[0022] Figure 3 This is a schematic diagram of the powder discharging device components of this utility model;
[0023] Figure 4 This is a schematic diagram of the hopper assembly of the present invention.
[0024] The components include: 1. Classifier body; 11. Side opening; 12. Inner pipe; 13. Connecting pipe ring; 14. Fan; 15. Circular retaining ring; 2. Powder discharge device; 21. Connecting pipe; 22. Screening cylinder; 23. Filter screen; 24. Discharge port; 25. Fixing ring; 3. Material hopper; 31. Inner ring; 32. Positive pressure fan; 33. Fixing block; 4. Support frame. Detailed Implementation
[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 this utility model based on the specific circumstances.
[0028] Please see Figure 1 — Figure 4 In this embodiment, a uniformly spreading powder classifier includes a powder classifier body 1. A material uniform spreading mechanism is installed inside the powder classifier body 1, and a material screening mechanism is connected to the side of the powder classifier body 1. The material uniform spreading mechanism includes: an inner pipe 12 installed inside the powder classifier body 1, a circular baffle ring 15 seamlessly connected above the inner pipe 12, and a connecting pipe ring 13 annularly connected to the side of the circular baffle ring 15, and a fan 14 is provided inside the circular baffle ring 15; side openings 11 are embedded on the four sides of the powder classifier body 1, and the connecting pipe ring 13 is located horizontally behind the side openings 11, and an isolation net is provided at the end of the connecting pipe ring 13; the powder classifier body 1 is interconnected with the powder discharge device 2 through the side openings 11.
[0029] Specifically, the powder classifier body 1 is equipped with a circular baffle ring 15 inside, which blocks coarser materials. The circular baffle ring 15 is connected to a connecting pipe ring 13 on the outside. A separation net of different densities is set behind the connecting pipe ring 13. The separation net screens the materials. A side opening 11 is horizontally corresponding to one side of the connecting pipe ring 13. A powder discharge device 2 is connected to the outside of the side opening 11. The powder discharge device 2 screens and discharges the materials to different degrees.
[0030] The material screening mechanism includes: a powder discharge device 2 connected to the side of the powder classifier body 1; a connecting pipe 21 connected to the top of the powder discharge device 2; a screening cylinder 22 connected inside the powder discharge device 2; a filter screen 23 installed at the bottom of the screening cylinder 22; a discharge port 24 installed below the filter screen 23; and a fixing ring 25 installed below the powder discharge device 2. The powder discharge device 2 is connected to the powder classifier body 1 through the connecting pipe 21, and the screening cylinder 22 is interconnected with the discharge port 24 through the filter screen 23. The powder discharge devices 2 are arranged in a ring around the midpoint of the powder classifier body 1. The powder discharge devices 2 are located above the hopper 3, and there are six sets of powder discharge devices 2.
[0031] Specifically, the powder discharge device 2 is connected to the outside of the powder classifier body 1. Inside the powder discharge device 2, there is a screening cylinder 22. Below the screening cylinder 22, there is a filter screen 23 and a discharge port 24. When the powder discharge device 2 discharges material, the filter screen 23 screens the coarser material again, thereby ensuring the fineness of the material discharged from the discharge port 24.
[0032] The lower part of the classifier body 1 is connected to the organic hopper 3. The organic hopper 3 has an inner ring 31 inside, and a positive pressure fan 32 is installed inside the inner ring 31. A fixing block 33 is fixedly installed on the outside of the inner ring 31. The organic hopper 3 is conical in shape, and the organic hopper 3 is fixedly connected to the inner ring 31 through the fixing block 33. The midpoint of the positive pressure fan 32 and the midpoint of the fan 14 are located on the same horizontal line. Support frames 4 are fixedly installed on the four sides of the bottom of the classifier body 1.
[0033] Specifically, the material hopper 3 is connected to the bottom of the powder classifier body 1. A positive pressure fan 32 is installed inside the material hopper 3. The positive pressure fan 32 is fixed and supported by the internal ring 31 and the fixing block 33. The positive pressure fan 32 is used to disperse the material, so that the material is kept dispersed inside the powder classifier body 1, which facilitates uniform discharge of the equipment.
[0034] In operation, the classifier body 1 processes the material. An internal pipe 12 is installed inside the classifier body 1, and a circular baffle ring 15 is connected above the internal pipe 12. The circular baffle ring 15 blocks coarser materials, and a connecting pipe ring 13 is connected to the outside of the circular baffle ring 15. The connecting pipe ring 13 is connected to the powder discharge device 2 through a side opening 11, and an isolation net is installed behind the connecting pipe ring 13. The isolation net further isolates the material, allowing materials of different sizes to be discharged from different powder discharge devices 2. When the material is discharged, the bottom of the powder separator 1 is connected to the organic hopper 3. The inside of the organic hopper 3 is equipped with a positive pressure fan 32. The positive pressure fan 32 keeps the material dispersed inside the powder separator 1, which facilitates the material to be dispersed and discharged. After the material is discharged from the powder discharge device 2, a screening cylinder 22 is connected inside the powder discharge device 2. A filter screen 23 and a discharge port 24 are connected below the screening cylinder 22. The filter screen 23 screens the coarser material again, thereby ensuring the fineness of the material discharged from the powder discharge device 2.
[0035] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A uniformly distributing powder classifier, comprising a powder classifier body (1), wherein a material uniformly distributing mechanism is installed inside the powder classifier body (1), and a material screening mechanism is connected to the side of the powder classifier body (1), characterized in that, The material uniform distribution mechanism includes: an inner pipe (12) installed inside the powder classifier body (1), a circular baffle (15) seamlessly connected above the inner pipe (12), and a connecting pipe ring (13) annularly connected to the side of the circular baffle (15), and a fan (14) is provided inside the circular baffle (15). The material screening mechanism includes: a powder discharge device (2) connected to the side of the powder separator body (1), a connecting pipe (21) connected above the powder discharge device (2), a screening cylinder (22) connected inside the powder discharge device (2), a filter screen (23) provided at the bottom of the screening cylinder (22), a discharge port (24) provided below the filter screen (23), and a fixing ring (25) provided below the powder discharge device (2).
2. The uniformly spreading powder classifier according to claim 1, characterized in that, The bottom of the classifier body (1) is connected to an organic hopper (3), and a support frame (4) is fixedly installed on the four sides of the bottom of the classifier body (1).
3. The uniformly spreading powder classifier according to claim 2, characterized in that, The machine hopper (3) is provided with an inner ring (31), and a positive pressure fan (32) is provided inside the inner ring (31). A fixing block (33) is fixedly installed on the outside of the inner ring (31).
4. The uniformly spreading powder classifier according to claim 1, characterized in that, The powder classifier body (1) has side openings (11) embedded on its four sides, and the connecting pipe ring (13) is located horizontally behind the side openings (11). An isolation net is provided at the end of the connecting pipe ring (13). The powder classifier body (1) is interconnected with the powder outlet device (2) through the side openings (11).
5. A uniformly spreading powder classifier according to claim 3, characterized in that, The hopper (3) is cone-shaped, and the hopper (3) is fixedly connected to the inner ring (31) through the fixing block (33), and the midpoint of the positive pressure fan (32) and the midpoint of the fan (14) are on the same horizontal line.
6. The uniformly spreading air classifier according to claim 1, characterized in that, The powder discharge device (2) is connected to the powder classifier body (1) through the connecting pipe (21), and the screening cylinder (22) is interconnected with the discharge port (24) through the filter screen (23). The powder discharge device (2) is arranged in a ring shape through the midpoint of the powder classifier body (1).
7. A uniformly spreading powder classifier according to claim 2, characterized in that, The powder discharge device (2) is located above the machine hopper (3), and there are six sets of powder discharge devices (2).