Screening device for nano-powder production based on supercritical gas collision technology

Abstract

The utility model discloses a screening device for nano powder production based on supercritical gas collision technology, which comprises a rack and a screening mechanism, the screening mechanism comprises a shell, a cover plate, a first partition plate and a second partition plate, the cover plate is assembled on the top of the shell through a flange, and the first partition plate and the second partition plate are arranged in the inclined direction and are distributed in parallel up and down. The cyclone separation assemblies are all assembled between the first partition plate and the second partition plate, each cyclone separation assembly comprises an outer barrel, an end plate arranged at the top end of the outer barrel and used for installation of the outer barrel and an inner barrel installed at the bottom of the first partition plate in a penetrating mode, the inner barrels are coaxially erected in the outer barrels, and spiral guide plates are arranged on the outer walls of the inner barrels; the utility model relates to the technical field of nano powder production. According to the screening device for nano powder production based on the supercritical gas collision technology, the multiple cyclone separation assemblies are arranged between the first partition plate and the second partition plate in parallel, superfine powder can be screened more accurately, and the overall screening efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nanometer powder production technical field especially is based on nanometer powder production with screening device of supercritical gas collision technology. BACKGROUND

[0002] With supercritical gas as carrier, the material can be refined to nanometer level through high pressure impact technology, and the refined material is suspended in the gas, and finally separated and collected through the screening device.

[0003] In the process of realizing the present application, the inventor found that there are at least the following problems in the prior art:

[0004] In the current nanometer powder production process based on supercritical gas collision technology, cyclone separator is mainly used as the main screening and collecting component. The cyclone separator uses centrifugal effect to introduce the gas containing nanometer powder into the inside of the separator, so that the powder adheres to the inner wall of the separator under the action of centrifugal force and forms negative pressure at the bottom, thereby realizing effective separation of the powder and the gas. In actual application, as the particle size decreases, the separation performance of the traditional cyclone separator for superfine powder often cannot meet the demand, and the use of multi-stage series cyclone separator will gradually increase the pressure loss as the number of separators through which the gas flows increases.

[0005] Therefore, the above technical problems need to be solved. CONTENT OF THE UTILITY MODEL

[0006] In order to overcome the shortcomings of the prior art, the utility model provides a screening device for nanometer powder production based on supercritical gas collision technology, which solves the problems raised in the background art.

[0007] In order to solve the above technical problems, the basic technical scheme of the utility model is as follows:

[0008] The screening device for nanometer powder production based on supercritical gas collision technology comprises a rack and a screening mechanism fixedly installed on the rack,

[0009] The screening mechanism comprises a shell, a cover plate flange assembled on the top of the shell, and first and second partition plates arranged in an inclined direction and in parallel at the top and bottom, respectively. The bottom of the shell is provided with a conical structure of a material drop hopper. The side wall of the shell is respectively provided with an exhaust pipe and a feed pipe vertically arranged at the top and bottom, respectively. The first partition plate is arranged between the exhaust pipe and the feed pipe, and the second partition plate is arranged below the feed pipe.

[0010] Also comprising several cyclone separation assemblies assembled in vertical direction between the first partition plate and the second partition plate, the cyclone separation assembly comprises an outer cylinder penetrating through the second partition plate and an end plate provided at the top end of the outer cylinder for mounting, and an inner cylinder penetratingly mounted at the bottom of the first partition plate, the inner cylinder is coaxially arranged inside the outer cylinder, and a spiral guide plate is arranged on the outer wall of the inner cylinder.

[0011] Preferably, the end plate is attached to the top of the first partition plate, and an arc-shaped baffle is arranged at the high position of the top of the end plate. The arrangement of the baffle helps guide the nano powder input into the interior of the shell into the cyclone separation assembly.

[0012] Preferably, the top of the inner cylinder is coaxially provided with a first limiting plate and a threaded sleeve from bottom to top, a plurality of threaded seats for threaded assembly of the threaded sleeve are penetratingly arranged on the first partition plate, and a sealing ring is arranged on the top of the first limiting plate and outside the threaded sleeve. The threaded assembly of the inner cylinder to the bottom of the first partition plate is a detachable structure, which is helpful for subsequent maintenance and replacement.

[0013] Preferably, support plates for attaching the first partition plate are respectively welded on the two inner side walls of the shell. The two support plates provide structural support for the arrangement of the first partition plate, and the two sides of the first partition plate are respectively fixedly connected with the two support plates through screws. During subsequent maintenance of the inner cylinder, the operator can replace the inner cylinder by detaching the first partition plate from the shell.

[0014] Preferably, an anti-mixing assembly penetratingly arranged in the inner cylinder is further included, the anti-mixing assembly comprises a connecting rod coaxially arranged in the inner cylinder, a hemispherical anti-mixing cover is arranged at the bottom end of the connecting rod, a second limiting plate is coaxially arranged at the top end of the connecting rod, a screw rod is vertically arranged at the top of the second limiting plate, and the screw rod penetratingly passes through the cover plate and is locked and connected through a nut. The anti-mixing cover can be arranged below the inner cylinder by means of the connecting rod, which can optimize the internal flow field and reduce the formation of secondary vortexes. Meanwhile, the design of the hemispherical structure helps to disperse the output powder and effectively prevents the agglomeration and agglomeration of the powder.

[0015] The beneficial effects of the present application are as follows:

[0016] The technical scheme of the present application comprises several cyclone separation assemblies connected in parallel between the first partition plate and the second partition plate, which can more accurately screen the superfine powder, improve the overall screening efficiency, and the combined use of multiple cyclone separation assemblies can disperse the load of a single cyclone separation assembly, prolong its service life, reduce the frequency of replacement and maintenance, and ensure the stability of the screening process, reduce the screening efficiency or product quality problems caused by equipment failure or improper operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is a structural schematic view of the screening mechanism of the utility model;

[0019] Figure 3 It is a structural schematic view of the cyclone separation assembly of the utility model;

[0020] Figure 4 It is a structural schematic view of the installation structure of the inner cylinder of the utility model;

[0021] Figure 5 It is a structural schematic view of the installation structure of the first baffle of the utility model;

[0022] Figure 6 It is a structural schematic view of the installation structure of the outer cylinder of the utility model;

[0023] Figure 7 It is a structural schematic view of the installation structure of the anti-mixing assembly of the utility model;

[0024] Figure 8 It is a structural schematic view of the anti-mixing assembly of the utility model;

[0025] Explanation of reference signs:

[0026] 100, rack;

[0027] 200, screening mechanism;

[0028] 210, shell; 220, cover plate; 230, first baffle; 240, second baffle; 250, cyclone separation assembly; 260, support plate; 270, anti-mixing assembly;

[0029] 2110, material falling hopper; 2120, exhaust pipe; 2130, feeding pipe;

[0030] 2310, threaded seat;

[0031] 2510, outer cylinder; 2520, end plate; 2530, inner cylinder; 2540, spiral guide plate; 2550, baffle; 2560, sealing ring;

[0032] 2531, first limiting plate; 2532, threaded sleeve;

[0033] 2710, connecting rod; 2720, anti-mixing cover; 2730, second limiting plate; 2740, screw rod; 2750, nut. DETAILED DESCRIPTION

[0034] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] Please refer to Figures 1-8 The utility model provides technical scheme: based on supercritical gas collision technology's nanometer powder production with screening device, including frame 100 and fixed installation on frame 100's screening mechanism 200, screening mechanism 200 includes casing 210 and flange assembly in casing 210 top's cover plate 220, and first baffle 230 and second baffle 240 are evenly arranged in the oblique direction and are in upper and lower parallel distribution, the bottom of casing 210 is equipped with the taper structure's drop hopper 2110, the sidewall of casing 210 is vertically equipped with the exhaust pipe 2120 and feed pipe 2130 that are in upper and lower distribution respectively, first baffle 230 is erected between exhaust pipe 2120 and feed pipe 2130, second baffle 240 is erected below feed pipe 2130, still include a plurality of cyclone separation assemblies 250 that are evenly assembled between first baffle 230 and second baffle 240 along the vertical direction, cyclone separation assembly 250 includes the outer cylinder 2510 that is penetrated in second baffle 240 and the end plate 2520 that is equipped with the top of outer cylinder 2510 for its installation, and the inner cylinder 2530 that is penetrated and installed in the bottom of first baffle 230, the inner cylinder 2530 is coaxially erected in the inside of outer cylinder 2510, and the outer wall of inner cylinder 2530 is equipped with spiral fairing 2540.

[0036] Based on the structure of the above setting, the nanometer powder production screening device based on the supercritical gas collision technology is composed of a rack 100 and a screening mechanism 200, wherein the screening mechanism 200 is used for the separation and collection of the nanometer powder after collision, and the rack 100 provides structural support for the erection of the screening mechanism 200. Specifically, in the working process, the nanometer powder is input into the shell 210 from the feeding pipe 2130 and enters several cyclone separation assemblies 250 respectively under the action of the airflow, under the action of the spiral guide plate 2540, the nanometer powder spirally descends in the gap between the inner cylinder 2530 and the outer cylinder 2510, and the nanometer powder descends along the inner wall of the outer cylinder 2510 under the action of the centrifugal force, and the gas spirally ascends through the inner cylinder 2530. Finally, the powder is output from the hopper 2110, and the gas is output from the exhaust pipe 2120, so as to realize the separation of the powder and the gas. The nanometer powder production screening device based on the supercritical gas collision technology can more accurately screen the superfine powder by parallelly arranging several cyclone separation assemblies 250 between the first partition plate 230 and the second partition plate 240, improve the overall screening efficiency, and the combination of the plurality of cyclone separation assemblies 250 can disperse the load of the single cyclone separation assembly 250, prolong the service life, reduce the frequency of replacement and maintenance, and ensure the stability of the screening process, reduce the screening efficiency and product quality problems caused by equipment failure or improper operation.

[0037] Further, the end plate 2520 is attached to the top of the first partition plate 230, and the arc-shaped baffle 2550 is arranged on the high position of the top of the end plate 2520.

[0038] Further, the top of the inner cylinder 2530 is coaxially provided with a first limiting plate 2531 and a threaded sleeve 2532 from bottom to top in sequence, a plurality of threaded seats 2310 for threaded assembly of the threaded sleeve 2532 are penetratingly arranged on the first partition plate 230, and a sealing ring 2560 is arranged on the top of the first limiting plate 2531 and outside the threaded sleeve 2532.

[0039] Further, support plates 260 for attaching the first partition plate 230 are respectively welded on the two inner side walls of the shell 210.

[0040] Further, it further includes an anti-mixing assembly 270 penetratingly arranged in the inner cylinder 2530, the anti-mixing assembly 270 includes a connecting rod 2710 coaxially arranged in the inner cylinder 2530, a hemispherical anti-mixing cover 2720 is arranged on the bottom end of the connecting rod 2710, a second limiting plate 2730 is coaxially arranged on the top end of the connecting rod 2710, a screw rod 2740 is vertically arranged on the top of the second limiting plate 2730, and the screw rod 2740 penetrates the cover plate 220 and is locked and connected through a nut 2750.

[0041] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A screening device for nano-powder production based on supercritical gas collision technology, characterized in that: The screen mechanism (200) is fixedly installed on the rack (100) and comprises a shell (210), a cover plate (220) flange-fitted on the top of the shell (210), a first partition plate (230) and a second partition plate (240) arranged in an inclined direction and in parallel in an upper and lower arrangement, and a material falling hopper (2110) in a conical structure arranged at the bottom of the shell (210). The shell (210) is provided with an exhaust pipe (2120) and a feeding pipe (2130) arranged in an upper and lower arrangement and vertically arranged on a side wall of the shell (210) respectively, the first partition plate (230) is arranged between the exhaust pipe (2120) and the feeding pipe (2130), and the second partition plate (240) is arranged below the feeding pipe (2130). A plurality of cyclone separation assemblies (250) are arranged in a vertical direction between the first partition plate (230) and the second partition plate (240), the cyclone separation assembly (250) comprises an outer cylinder (2510) penetrating the second partition plate (240), an end plate (2520) arranged at the top of the outer cylinder (2510) for mounting, and an inner cylinder (2530) penetratingly mounted at the bottom of the first partition plate (230), the inner cylinder (2530) is coaxially arranged inside the outer cylinder (2510), and a spiral guide plate (2540) is arranged on the outer wall of the inner cylinder (2530).

2. The screening device for nano-powder production based on supercritical gas collision technology according to claim 1, characterized in that: The end plate (2520) is attached to the top of the first partition plate (230), and an arc-shaped baffle (2550) is arranged at a high position of the top of the end plate (2520).

3. The screening device for producing nano-powder based on supercritical gas collision technology according to claim 1, characterized in that: The top of the inner cylinder (2530) is sequentially coaxially provided with a first limiting plate (2531) and a threaded sleeve (2532) from bottom to top, a plurality of threaded seats (2310) for threaded assembly of the threaded sleeve (2532) are penetratingly arranged on the first partition plate (230), and a sealing ring (2560) is arranged on the top of the first limiting plate (2531) and outside the threaded sleeve (2532).

4. The screening device for nano-powder production based on supercritical gas collision technology according to claim 1, characterized in that: Support plates (260) for attaching the first partition plate (230) are welded on the two inner side walls of the shell (210).

5. The screening device for nano-powder production based on supercritical gas collision technology according to claim 1, characterized in that: The anti-mixing assembly (270) comprises a connecting rod (2710) coaxially arranged in the inner cylinder (2530), a hemispherical anti-mixing cover (2720) is arranged at the bottom end of the connecting rod (2710), a second limiting plate (2730) is coaxially arranged at the top end of the connecting rod (2710), a screw rod (2740) is vertically arranged on the top of the second limiting plate (2730), and the screw rod (2740) penetrates the cover plate (220) and is locked and connected through a nut (2750).

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