Powder cyclone classifier
The powder cyclone classifier, with its conical outer shell, screen cyclone cover, venturi neck zone, and zoned airflow design, solves the problems of low separation accuracy and processing efficiency of traditional powder cyclone classifiers, achieving multi-stage precision separation and efficient collection, thereby improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520192398.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-07
AI Technical Summary
Traditional powder cyclone classifiers have low separation accuracy and processing efficiency, and their product collectors have a simple design, making it difficult to achieve fine classification and effective sorting.
The powder cyclone classifier features a conical outer shell design, an internal cyclone shroud with a screen structure, a venturi neck area design, and main and secondary air inlets that create zoned flow. It is equipped with collectors for secondary and coarse products and a cleaning air inlet pipe.
It achieves multi-level fine grading, improves grading accuracy and efficiency, facilitates product collection and cleaning maintenance, and enhances production efficiency and product quality.
Smart Images
Figure CN223862047U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of powder grading device, specifically, a kind of powder cyclone classifier. BACKGROUND
[0002] In the production and processing of metal powder, screening and grading are very important links. Traditional metal powder screening and grading mainly rely on manual or simple mechanical equipment to complete, but these methods have the disadvantages of low efficiency, low precision, easy to be affected by human factors, etc. Therefore, how to improve the efficiency and precision of metal powder screening and grading, reduce manual operation and error is a problem to be solved at present.
[0003] Cyclone classification is a method of classifying particles using centrifugal force, which is mainly used for dust and particulate material treatment. In the screening and grading of metal powder, cyclone classification is also widely used. Traditional cyclone classification equipment mainly consists of a cyclone barrel, an air duct, a screen and the like. By adjusting the rotational speed and air volume of the cyclone barrel, the screening and grading of metal powder can be realized.
[0004] Although the traditional powder cyclone classifier has a simple structure, it has problems such as low separation precision and low processing efficiency in use. The existing equipment usually cannot achieve fine classification, which affects the quality and production efficiency of the product. In addition, the design of the product collector is relatively simple, and the different particle size products after separation cannot be conveniently and effectively collected and classified, which limits the application range and environmental adaptability of the overall system. SUMMARY
[0005] The utility model aims to provide a kind of powder cyclone classifier, mainly solves the problem of low separation precision and processing efficiency of traditional classifier.
[0006] To achieve the above-mentioned purpose, the utility model employs the following technical solutions:
[0007] A kind of powder cyclone classifier, comprising a conical shell, a cyclone cover is arranged in the shell, a tangential main air inlet pipe is arranged in the middle of the shell and penetrates into the cyclone cover, a feed inlet and a fine product discharge port are opened in the top of the shell and extend into the cyclone cover, a straight cylinder is arranged at the bottom of the shell, a tangential secondary air inlet pipe is opened in the middle of the straight cylinder, and a product collector is connected to the bottom of the straight cylinder;Wherein, the cyclone cover is a screen structure.
[0008] Further, in the utility model, a Venturi neck region is arranged in the upper part of the cyclone cover;The fine product discharge port is communicated with the cyclone cover above the Venturi neck region, and the feed inlet is communicated with the cyclone cover below the Venturi neck region.
[0009] Further, in the utility model, the straight cylinder includes an inner cylinder and an outer cylinder, the top of the inner cylinder is connected with the bottom of the cyclone cover, and the top of the outer cylinder is connected with the bottom of the shell.
[0010] Further, in the utility model, the product collector top is threadedly connected with the shell bottom.
[0011] Further, in the utility model, the product collector includes a secondary coarse product collector and a coarse product collector, the secondary coarse product collector and the coarse product collector are separated by a circular partition plate, and the upper end of the circular partition plate is butted with the bottom of the inner cylinder.
[0012] Further, in the utility model, a cleaning air inlet pipe is further arranged on the upper shell.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] (1) The cyclone classifier has fine grading performance, the shell is designed in a conical shape, a unique cyclone cover is arranged inside, the cover is formed by a screen, and different particle size powders can be effectively separated. A Venturi neck area is arranged on the upper part of the cyclone cover, so that the particle concentration is increased when the fine product passes through the Venturi neck area on the top, the chance of particle collision is increased, the dispersion of particles is intensified, the grading effect of metal powder is better, and the coarse powder is classified again through the screen hole on the bottom inlet and the cyclone cover, so that multi-stage fine classification is realized, and the grading precision of metal powder is improved.
[0015] (2) The cyclone classifier forms a zoned flow phenomenon through the airflow interaction of the main and secondary air inlets, the secondary airflow has little influence on the tangential velocity of the main classification flow field, but the axial velocity of the central area airflow is significantly increased by nearly 100%, which creates conditions for the timely discharge of fine particles and improves the grading efficiency of metal powder.
[0016] (3) The straight cylinder below the cyclone cover is composed of an inner cylinder and an outer cylinder, the top of the inner cylinder is connected with the bottom of the cyclone cover, and the bottom of the outer cylinder is connected with the shell, so that the finished product after classification falls into the straight cylinder, and the secondary coarse product collector and the coarse product collector collect the product, and meanwhile, the top of the collector is threadedly connected with the bottom of the shell, so that the product can be discharged, and the collector can be disassembled and cleaned.
[0017] (4) The upper part of the shell is further provided with a cleaning air inlet pipe, so that the cyclone cover can be conveniently cleaned and maintained. Through the design, the powder cyclone classifier can not only efficiently classify the powder, but also effectively improve the production efficiency and product quality, and is convenient to maintain and clean. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is the whole structure schematic diagram of the utility model.
[0019] Fig. 2 It is the cross section structure schematic diagram of the utility model.
[0020] Fig. 3 It is the overhead schematic diagram of the product collector of the utility model.
[0021] Among them, the name corresponding to the reference sign is:
[0022] 1, shell, 2, cyclone cover, 3, tangential main air inlet pipe, 4, feed inlet, 5, fine product discharge port, 6, straight cylinder, 7, tangential secondary air inlet pipe, 8, product collector, 9, venturi neck area, 10, inner cylinder, 11, outer cylinder, 12, secondary coarse product collector, 13, coarse product collector, 14, circular partition, 15, cleaning air inlet pipe. Specific implementation
[0023] The utility model will be further explained in combination with the drawings and examples, and the mode of the utility model includes but is not limited to the following examples.
[0024] Example
[0025] As Figs. 1-3 The utility model discloses a kind of powder cyclone classifier, including conical shell 1, cyclone cover 2 is arranged in shell 1, tangential main air inlet pipe 3 is arranged in the middle part of shell 1 and penetrates into cyclone cover 2, feed inlet 4 and fine product discharge port 5 are opened in the top of shell 1 and extend into cyclone cover 2, straight cylinder 6 is arranged in the bottom of shell 1, and tangential secondary air inlet pipe 7 is opened in the middle part of straight cylinder 6, and product collector 8 is connected to the bottom of straight cylinder 6;Wherein, cyclone cover 2 is screen structure.The airflow of primary and secondary air inlet pipe is interacted to form zoned flow phenomenon in the cyclone classifier, the tangential velocity of secondary airflow to main classification flow field is little, but the axial velocity of central region airflow is significantly increased, and the maximum amplitude is close to 100%, which creates conditions for timely discharge of fine particles, and improves the classification efficiency of metal powder.
[0026] In the embodiment, venturi neck area 9 is arranged in the upper part of cyclone cover 2;Fine product discharge port 5 is communicated with cyclone cover 2 above venturi neck area 9, and feed inlet 4 is communicated with cyclone cover 2 below venturi neck area 9.The upper part of cyclone cover is designed with venturi neck area, so that the particle concentration is increased when fine product passes through the top venturi neck area, the opportunity of particle mutual collision is increased, the particle is intensified to disperse, the classification effect of metal powder is better, and the powder of relatively coarse is classified again through the bottom feed inlet and the screen hole on cyclone cover, so that multi-stage fine classification is realized, and the classification precision of metal powder is improved.
[0027] The straight cylinder 6 below the cyclone cover 2 in the embodiment is composed of an inner cylinder 10 and an outer cylinder 11, the top of the inner cylinder 10 is connected with the bottom of the cyclone cover 2, and the bottom of the outer cylinder 11 is connected with the shell, so that the classified products fall into the straight cylinder 6. The product collector 8 includes a secondary coarse product collector 12 and a coarse product collector 13; the secondary coarse product collector 12 and the coarse product collector 13 are separated by a circular partition plate 14, and the upper end of the circular partition plate 14 is in butt joint with the bottom of the inner cylinder 10. The secondary coarse product collector 12 and the coarse product collector 13 collect products, and meanwhile, the top of the product collector is in threaded connection with the bottom of the shell, so as to facilitate product discharge, disassembly and cleaning.
[0028] In order to avoid the powder from blocking the screen structure on the cyclone cover 2, the upper shell of the shell 1 of the embodiment is further provided with a cleaning air inlet pipe 15, so as to facilitate the cleaning and maintenance of the cyclone cover.
[0029] The above embodiment is only one of the preferred embodiments of the present application, and should not be used to limit the protection scope of the present application. Any modification or polishing without substantial meaning made on the basis of the main design idea and spirit of the present application, and the technical problems solved by the modification or polishing are still consistent with the present application, and should be included in the protection scope of the present application.
Claims
1. A powder cyclone classifier, characterized in that, The device includes a conical outer shell (1), a cyclone shroud (2) inside the outer shell (1), a tangential main air inlet pipe (3) located in the middle of the outer shell (1) and extending into the cyclone shroud (2), a feed inlet (4) and a fine product outlet (5) located at the top of the outer shell (1) and extending into the cyclone shroud (2), a straight cylinder (6) located at the bottom of the outer shell (1), a tangential secondary air inlet pipe (7) located in the middle of the straight cylinder (6), and a product collector (8) connected to the bottom of the straight cylinder (6); wherein the cyclone shroud (2) is a screen structure.
2. The powder cyclone classifier according to claim 1, characterized in that, The upper part of the cyclone cover (2) is provided with a Venturi neck area (9); the fine product outlet (5) is connected to the cyclone cover (2) above the Venturi neck area (9), and the feed inlet (4) is connected to the cyclone cover (2) below the Venturi neck area (9).
3. A powder cyclone classifier according to claim 2, characterized in that, The straight cylinder (6) includes an inner cylinder (10) and an outer cylinder (11). The top of the inner cylinder (10) is connected to the bottom of the cyclone cover (2); the top of the outer cylinder (11) is connected to the bottom of the outer shell (1).
4. A powder cyclone classifier according to claim 3, characterized in that, The top of the product collector (8) is threaded to the bottom of the housing (1).
5. A powder cyclone classifier according to claim 4, characterized in that, The product collector (8) includes a coarse product collector (12) and a coarse product collector (13); the coarse product collector (12) and the coarse product collector (13) are separated by a circular partition (14), the upper end of which is connected to the bottom of the inner cylinder (10).
6. A powder cyclone classifier according to claim 5, characterized in that, A cleaning air inlet pipe (15) is also provided on the upper part of the outer shell (1).