Converter feeding device for hydrogen fluoride production

Abstract

The utility model discloses a converter feeding device for hydrogen fluoride production, which comprises a screw conveyer, a feeding port and a discharging port are respectively arranged at two ends of the screw conveyer, a connecting cylinder is arranged on the feeding port, a conveying cylinder is coaxially communicated with the top end of the connecting cylinder, and a feeding port is arranged on the connecting cylinder. The diameter of the material conveying barrel is smaller than that of the connecting barrel, a scraping disc is coaxially arranged in the material conveying barrel, the outer circumferential surface of the scraping disc is in sliding fit with the inner circumferential surface of the material conveying barrel, the scraping disc is connected with a driving device, and a feeding opening is formed in the side wall of the material conveying barrel; the conveying barrel has the advantages that fluorite powder adsorbed on the inner wall of the conveying barrel can be quickly scraped off through the scraping disc, so that the conveying barrel is prevented from being blocked, the fluorite powder can be fed into a converter in time, and normal generation of hydrogen fluoride gas is guaranteed.

Description

Technical field:

[0001] The utility model belongs to the field of fluorine chemical production, and in particular relates to a converter feeding device for hydrogen fluoride production. Background technology:

[0002] The rotary kiln is one of the important equipment in the production of hydrogen fluoride. Hydrogen fluoride is a colorless gas that forms an association due to the presence of hydrogen bonds between molecules. Liquid hydrogen fluoride has a high dielectric constant and is an excellent solvent that can dissolve many inorganic and organic compounds. It is an important chemical product in industry.

[0003] The converter is one of the important equipment in the production of hydrogen fluoride. Fluorite powder (calcium fluoride CaF2) and concentrated sulfuric acid are mixed in a ratio of 1:1.2-1.3 and fed into the converter to react and produce hydrogen fluoride gas. When the fluorite powder enters the converter, due to the external humid air, the inner wall of the feed port of the screw conveyor used for feeding will absorb the fluorite powder. After long-term use, it will be blocked, resulting in the inability of the fluorite powder to be put into the converter in time, affecting the normal reaction in the converter and reducing the production of hydrogen fluoride gas. Utility model content:

[0004] The utility model aims to provide a converter feeding device for hydrogen fluoride production, and overcomes the shortcomings of the above-mentioned prior art, and effectively solves the existing problem of fluorite powder blockage.

[0005] The content of the utility model: A converter feeding device for hydrogen fluoride production includes a screw conveyor, wherein a feed port and a discharge port are respectively provided at both ends of the screw conveyor, a connecting cylinder is installed on the feed port, a feeding cylinder is coaxially connected to the top end of the connecting cylinder, the diameter of the feeding cylinder is smaller than the diameter of the connecting cylinder, a scraper is coaxially arranged in the feeding cylinder, the scraper is conical, the outer circumferential surface of the scraper is slidably fitted with the inner circumferential surface of the feeding cylinder, the scraper is connected to a driving device, and a feeding port is provided on the side wall of the feeding cylinder.

[0006] Furthermore, the driving device includes a cylinder, which is vertically installed downward on the top wall of the feed barrel, and the piston rod of the cylinder extends into the inner cavity of the feed barrel. A rotating rod is coaxially connected to the piston rod of the cylinder, and the bottom end of the rotating rod is coaxially fixedly connected to the scraper.

[0007] Furthermore, the piston rod of the cylinder is connected to the rotating rod through a coupling.

[0008] Furthermore, a receiving hopper is installed on the feeding port.

[0009] Furthermore, the diameter of the connecting tube is the same as the diameter of the feed port.

[0010] Furthermore, the connecting tube and the feeding tube are fixedly connected by bolts.

[0011] Furthermore, the inner wall of the feeding cylinder and the outer wall of the scraper are both smooth metal surfaces.

[0012] The beneficial effect of the utility model is that the fluorite powder adsorbed on the inner wall of the feeding tube can be quickly scraped off by the scraper, thereby preventing the feeding tube from being blocked, so that the fluorite powder can be put into the converter in time, thereby ensuring the normal generation of hydrogen fluoride gas. Description of the drawings:

[0013] Figure 1 It is a partial cross-sectional view of the main view of the utility model;

[0014] In the figure, 1 is a screw conveyor, 2 is a feed port, 3 is a discharge port, 4 is a connecting cylinder, 5 is a feeding cylinder, 6 is a scraper, 7 is a cylinder, 8 is a rotating rod, 9 is a coupling, and 10 is a hopper. Specific implementation method:

[0015] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation of the present invention is now described with reference to the accompanying drawings:

[0016] like Figure 1 As shown, a converter feeding device for hydrogen fluoride production comprises a screw conveyor 1, wherein a feed port 2 and a discharge port 3 are respectively provided at both ends of the screw conveyor 1, a connecting cylinder 4 is installed on the feed port 2, a feeding cylinder 5 is coaxially connected to the top end of the connecting cylinder 4, the diameter of the feeding cylinder 5 is smaller than the diameter of the connecting cylinder 4, a scraper 6 is coaxially arranged in the feeding cylinder 5, the outer circumferential surface of the scraper 6 is slidably fitted with the inner circumferential surface of the feeding cylinder 5, the scraper 6 is connected to a driving device, a feeding port is provided on the side wall of the feeding cylinder 5, the driving device comprises a cylinder 7, the cylinder 7 is vertically downwardly installed on the top wall of the feeding cylinder 5, the piston rod of the cylinder 7 extends into the inner cavity of the feeding cylinder 5, a rotating rod 8 is coaxially connected to the piston rod of the cylinder 7, the bottom end of the rotating rod 8 is coaxially fixedly connected to the scraper 6, and the piston rod of the cylinder 7 is transmission-connected to the rotating rod 8 via a coupling 9.

[0017] Specifically, the fluorite powder adsorbed on the inner wall of the feeding tube 5 can be scraped off by the scraper 6, thereby preventing the feeding tube 5 from being blocked.

[0018] During actual use, when the inner wall of the feed barrel 5 absorbs a lot of fluorite powder, the cylinder 7 starts to retract the piston rod. At this time, the scraper 6 connected to the bottom end of the rotating rod 8 retracts from the connecting barrel 4 into the inner cavity of the feed barrel 5. At this time, the outer circumferential surface of the scraper 6 scrapes off the fluorite powder absorbed by the inner circumferential surface of the feed barrel 5. After scraping, the scraper 6 extends from the inner cavity of the feed barrel 5 and stops in the inner cavity of the connecting barrel 4. At this time, the scraped fluorite powder falls into the inner cavity of the screw conveyor 1 through the feed port 2.

[0019] like Figure 1 As shown, a converter feeding device for hydrogen fluoride production, the scraper 6 is conical in shape, a receiving hopper 10 is installed on the feeding port, the diameter of the connecting tube 4 is the same as the diameter of the feeding port 2, the connecting tube 4 and the feeding tube 5 are fixedly connected by bolts, and the inner wall of the feeding tube 5 and the outer wall of the scraper 6 are both smooth metal surfaces.

[0020] Specifically, the conical scraper 6 not only facilitates the rapid falling of the fluorite powder, but also controls the size of the opening gap between the conical scraper 6 and the feeding cylinder 5, thereby controlling the feeding amount of the fluorite powder.

[0021] During actual use, when the fluorite powder adsorbed on the inner wall of the feed barrel 5 is scraped off, the conical scraper 6 can quickly guide it to fall into the screw conveyor 1 to prevent the fluorite powder from accumulating on the scraper 6, and when the conical scraper 6 rises and falls, the size of the opening gap between it and the feed barrel 5 will also change accordingly, and the feeding amount of fluorite powder will also be changed accordingly. Therefore, after the scraping is completed, the up and down moving distance of the scraper 6 can be controlled to control the feeding amount of fluorite powder; the receiving hopper 10 can concentrate a large amount of fluorite powder into the feed barrel 5; the inner wall of the feed barrel 5 and the outer wall of the scraper 6 are both smooth metal surfaces, which further prevents the fluorite powder from being adsorbed on their surfaces.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A converter feeding device for hydrogen fluoride production, comprising a screw conveyor (1), wherein a feed port (2) and a discharge port (3) are respectively provided at both ends of the screw conveyor (1), wherein: A connecting cylinder (4) is installed on the feed port (2), and a feeding cylinder (5) is coaxially connected to the top end of the connecting cylinder (4). The diameter of the feeding cylinder (5) is smaller than the diameter of the connecting cylinder (4). A scraper (6) is coaxially arranged inside the feeding cylinder (5). The scraper (6) is conical in shape. The outer circumferential surface of the scraper (6) is slidably fitted with the inner circumferential surface of the feeding cylinder (5). The scraper (6) is connected to a driving device, and a feeding port is opened on the side wall of the feeding cylinder (5).

2. A converter feeding device for hydrogen fluoride production according to claim 1, characterized in that: The driving device comprises a cylinder (7), which is vertically mounted downward on the top wall of the feeding barrel (5), and the piston rod of the cylinder (7) extends into the inner cavity of the feeding barrel (5). A rotating rod (8) is coaxially connected to the piston rod of the cylinder (7), and the bottom end of the rotating rod (8) is coaxially fixedly connected to the scraper (6).

3. A converter feeding device for hydrogen fluoride production according to claim 2, characterized in that: The piston rod of the cylinder (7) is transmission-connected to the rotating rod (8) via a coupling (9).

4. A converter feeding device for hydrogen fluoride production according to claim 1, characterized in that: A material receiving hopper (10) is installed on the feeding port.

5. A converter feeding device for hydrogen fluoride production according to claim 1, characterized in that: The diameter of the connecting cylinder (4) is the same as the diameter of the feed port (2).

6. A converter feeding device for hydrogen fluoride production according to claim 1, characterized in that: The connecting cylinder (4) and the feeding cylinder (5) are fixedly connected by bolts.

7. A converter feeding device for hydrogen fluoride production according to claim 1, characterized in that: The inner wall of the feeding cylinder (5) and the outer wall of the scraper (6) are both smooth metal surfaces.

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