An impurity filtering device for yellow phosphorus, a raw material for producing phosphorus trichloride

Abstract

This utility model discloses an impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride. The device includes a yellow phosphorus tank, a submersible pump installed within the tank to transport the yellow phosphorus to the workshop, and a conveying cylinder. One end of the conveying cylinder has an inlet pipe, and the end of the inlet pipe furthest from the conveying cylinder is connected to the outlet of the submersible pump. The submersible pump is connected to the inlet pipe. An outlet pipe is installed at the bottom of the conveying cylinder, connecting to the workshop. A top cover is installed on the top of the conveying cylinder. Compared with existing technologies, this utility model's impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, can remove various solid impurities that may be present in the yellow phosphorus before it enters the workshop. This effectively prevents impurities from being transported into the production system along with the yellow phosphorus, thus avoiding blockages in the conveying pipes, valves, and packing rings. It also minimizes maintenance frequency and costs, effectively reduces the impact of impurities on the raw material ratio, and ensures product quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of filtration devices, specifically relating to an impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride. Background Technology

[0002] In the production of phosphorus trichloride, yellow phosphorus is the main raw material, and its purity is crucial to product quality and production safety. Yellow phosphorus is typically stored in a molten liquid covered by hot water and transported to the reaction section of the production workshop via submersible pumps. However, the yellow phosphorus tank may contain various solid impurities, including ferric phosphate, oxides, phosphide agglomerates, and other mechanical impurities. During phosphorus trichloride production, these impurities are transported into the production system along with the yellow phosphorus, potentially causing blockages in pipelines, valves, and packing rings. This increases maintenance frequency and costs, and may even affect the raw material ratio, leading to decreased product quality and yield, and increased safety hazards.

[0003] To mitigate these operational problems, operators typically rely on natural settling in the yellow phosphorus tank for simple filtration. However, natural settling requires a long settling time, has limited filtration efficiency, and offers insufficient protection for pipelines and downstream equipment. Therefore, these methods cannot fundamentally prevent production problems and safety hazards caused by impurities, thus limiting improvements in production efficiency and product quality stability.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to provide an impurity filtration device for yellow phosphorus, a raw material for the production of phosphorus trichloride. Utility Model Content

[0005] The purpose of this invention is to provide an impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, which can solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] A device for filtering impurities in yellow phosphorus, a raw material for the production of phosphorus trichloride, includes a yellow phosphorus tank, a submersible pump installed in the yellow phosphorus tank to transport the yellow phosphorus to the workshop, and a conveying cylinder. One end of the conveying cylinder is connected to a feed pipe, and the end of the feed pipe furthest from the conveying cylinder is connected to the outlet end of the submersible pump. The submersible pump is connected to the feed pipe. A discharge pipe is installed at the bottom end of the conveying cylinder and is connected to the workshop. A top cover is installed on the top of the conveying cylinder. A filter screen is installed inside the conveying cylinder. A magnetic ring is installed on the outer wall of the conveying cylinder, located above the filter screen. An anti-clogging mechanism matching the filter screen is installed inside the conveying cylinder.

[0008] In one or more embodiments of this utility model, the anti-clogging mechanism includes a connecting ring, a scraper matching the filter screen is installed on the outside of the connecting ring, a handle is installed on the top of the conveying cylinder, and the connecting ring is installed at the bottom of the handle.

[0009] In one or more embodiments of this utility model, a pressure gauge matching the anti-clogging component is installed on the feed pipe.

[0010] In one or more embodiments of this utility model, the feed pipe is equipped with an air inlet for introducing nitrogen into the conveying cylinder.

[0011] In one or more embodiments of this utility model, a scraper is installed inside the conveying cylinder, the scraper is located above the connecting ring, the scraper is matched with the magnetic suction ring, and a sewage discharge component matched with the anti-clogging mechanism is installed on the scraper.

[0012] In one or more embodiments of this utility model, the sewage discharge assembly includes a spring installed inside a scraper, a groove matching the spring is provided inside the scraper, one end of the spring near the center of the scraper is installed on the scraper, and a slider matching the groove is installed on the other end of the spring. A scraper rod matching the scraper blade is installed on the slider, an inlet and an outlet matching the scraper rod are provided on the outer wall of the connecting ring, a sewage discharge pipe matching the inlet is installed at the bottom of the filter screen, the sewage discharge pipe communicates with the outer wall of the conveying cylinder, an electric control valve is installed at one end of the sewage discharge pipe near the filter screen, a limiting assembly matching the scraper is installed inside the conveying cylinder, and an anti-jamming assembly matching the scraper is installed on the scraper rod.

[0013] In one or more embodiments of the present invention, the limiting component includes a limiting block, the limiting block is mounted on the scraper, and the inner wall of the conveying cylinder is provided with a limiting groove that matches the limiting block.

[0014] In one or more embodiments of this utility model, the anti-jamming component includes a limiting piece installed at the end of the scraper blade away from the center of the scraper disk, and the scraper bar is provided with a slot that matches the limiting piece.

[0015] In one or more embodiments of this utility model, a limiting rod matching the scraper is installed inside the spring, the slider is slidably connected to the limiting rod, and both ends of the limiting rod are installed on the scraper.

[0016] In one or more embodiments of this utility model, an insulation cylinder is installed outside the conveying cylinder, a steam pipe is installed at the upper end of the insulation cylinder, and a water outlet pipe is installed at the bottom end of the insulation cylinder.

[0017] Compared with the prior art, the impurity filtration device of this utility model for yellow phosphorus, a raw material for the production of phosphorus trichloride, can remove various solid impurities that may be contained in yellow phosphorus before it enters the workshop. This effectively avoids impurities being transported into the production system along with yellow phosphorus, which could cause blockages in the conveying pipes, valves and packing ceramic rings. It also minimizes maintenance frequency and costs, effectively reduces the impact of impurities on the raw material ratio, and ensures product quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the process flow of an impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, according to the first embodiment of this utility model.

[0020] Figure 2 This is a schematic cross-sectional view of the first embodiment of the present invention. Figure 1 ;

[0021] Figure 3 This is a schematic cross-sectional view of the first embodiment of the present invention. Figure 2 ;

[0022] Figure 4 This is the first embodiment of the present utility model. Figure 3 A is an enlarged structural diagram;

[0023] Figure 5 This is a schematic cross-sectional view of the first embodiment of the present invention. Figure 3 ;

[0024] Figure 6 This is a partial structural diagram of the first embodiment of the present invention.

[0025] Explanation of key figure labels:

[0026] 1. Conveying cylinder; 101. Feed pipe; 1011. Pressure gauge; 1012. Air inlet; 102. Discharge pipe; 103. Limiting groove; 201. Filter screen; 202. Connecting ring; 2021. Feed inlet; 2022. Discharge outlet; 203. Scraper; 2031. Limiting plate; 204. Handle; 205. Scraper disc; 2051. Slide groove; 2052. Limiting block; 206. Spring; 207. Slider; 208. Scraper rod; 209. Limiting rod; 210. Drain pipe; 211. Electric control valve; 301. Magnetic ring; 4. Insulation cylinder; 401. Steam pipe; 402. Water outlet pipe. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] like Figure 1 As shown in one embodiment of this utility model, an impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, includes a yellow phosphorus tank. A submersible pump is installed inside the yellow phosphorus tank, and the submersible pump transports the yellow phosphorus from the tank to the workshop. A conveying cylinder 1 is installed between the submersible pump and the workshop. Before the yellow phosphorus from the tank is pumped out of the workshop, it passes through the conveying cylinder 1. The conveying cylinder 1 filters impurities in the molten yellow phosphorus output by the submersible pump, minimizing the transport of impurities into the production system and preventing blockages in the conveying pipes, valves, and packing rings. This reduces maintenance frequency and costs, and also minimizes the impact of impurities on the raw material ratio, thus affecting product quality.

[0029] like Figures 1-2 As shown, a feed pipe 101 is connected to one end of the conveying cylinder 1. The end of the feed pipe 101 away from the conveying cylinder 1 is installed at the outlet of a submersible pump, which is connected to the feed pipe 101. A discharge pipe 102 is connected to the bottom of the conveying cylinder 1 and is connected to the workshop. A top cover is installed on the top of the conveying cylinder 1. A filter screen 201 is installed inside the conveying cylinder 1, and a magnetic ring 301 is installed on the outer wall of the conveying cylinder 1, located above the filter screen 201. Yellow phosphorus enters the conveying cylinder 1 through the feed pipe 101. The magnetic ring 301 removes phosphorus, iron, and other mechanical impurities by adsorption, and then the filter screen 201 filters out oxides and phosphides that have clumped together, thus removing impurities.

[0030] The anti-clogging mechanism concentrates impurities on the filter screen 201, thereby effectively reducing the possibility of the filter screen 201 being clogged by impurities.

[0031] like Figures 3-4 As shown, the anti-clogging mechanism includes a connecting ring 202. A scraper 203, matching the filter screen 201, is mounted on the outside of the connecting ring 202. A handle 204 is slidably and rotatably mounted on the top of the conveying cylinder 1. A nut (not shown in the figure) matching the top cover is mounted on the outside of the handle 204 to fix the handle 204. The connecting ring 202 is mounted on the bottom of the handle 204. The user uses the handle 204 to move the connecting ring 202 and the scraper 203 toward the filter screen 201. When the scraper 203 is in close contact with the filter screen 201, the user rotates the scraper 203 to scrape away and concentrate the impurities on the surface of the filter screen 201.

[0032] like Figure 2 As shown, a pressure gauge 1011, which is compatible with the anti-clogging component, is connected and installed on the feed pipe 101. The user can use the readings of the pressure gauge 1011 to know the accumulation of impurities on the filter screen 201, so as to clean it in a timely manner.

[0033] like Figure 2 As shown, the feed pipe 101 is connected to an air inlet 1012 for introducing nitrogen into the conveying cylinder 1. A valve (not shown in the figure) is installed on the air inlet 1012. The air inlet 1012 is used to introduce nitrogen to replace the internal air before opening the cover for maintenance, replacing the filter screen 201 or discharging slag, to prevent yellow phosphorus from spontaneously combusting and to ensure operational safety as much as possible.

[0034] like Figure 4 As shown, a scraper 205 is slidably installed inside the conveying cylinder 1, positioned above the connecting ring 202, and matched with the magnetic ring 301. When the connecting ring 202 moves downward, the scraper 205 moves downward as well, scraping off phosphorus iron and other mechanical impurities attracted to the magnetic ring 301 from the inner wall of the conveying cylinder 1. A drain assembly matching the anti-clogging mechanism is installed on the scraper 205. The drain assembly is used to discharge impurities from the filter screen 201 and scraped off by the scraper 205.

[0035] like Figures 4-5As shown, the sewage discharge assembly includes a spring 206 installed inside the scraper 205. A groove 2051 matching the spring 206 is provided inside the scraper 205. One end of the spring 206 near the center of the scraper 205 is installed on the scraper 205. The other end of the spring 206 is equipped with a slider 207 matching the groove 2051. A scraper rod 208 matching the scraper blade 203 is installed on the slider 207. The outer wall of the connecting ring 202 has an inlet 2021 and an outlet 2022 matching the scraper rod 208. A sewage discharge pipe 210 matching the inlet 2021 is installed at the bottom of the filter screen 201. The sewage discharge pipe 210 is connected to the outer wall of the conveying cylinder 1. An electric control valve 211 is installed at the end of the sewage discharge pipe 210 near the filter screen 201. A limiting component matching the scraper 205 is installed inside the conveying cylinder 1. An anti-jamming component matching the scraper 205 is installed on the scraper rod 208. Under the action of the limiting component and the anti-jamming component, the scraper 205 moves with the connecting ring 202 to the upper surface of the filter screen 201 and cannot rotate. The user rotates the scraper blade 203 to concentrate the impurities. When the scraper blade 203 rotates to contact the scraper rod 208, the scraper rod 208 concentrates the impurities on the scraper blade 203. At the same time, the scraper rod 208 slides along the slide groove 2051, gradually pushing the impurities into the feed inlet 2021 for collection. Then, the user's electric control valve 211 rotates, causing the impurities to be discharged from the drain pipe 210. At the same time, under the action of the spring 206, the scraper rod 208 leaves the connecting ring 202 from the discharge port 2022, preparing for the next cleaning of the scraper blade 203.

[0036] like Figure 4 As shown, the limiting component includes a limiting block 2052, which is mounted on the scraper 205. The inner wall of the conveying cylinder 1 has a limiting groove 103 that matches the limiting block 2052. With the cooperation of the limiting groove 103 and the limiting block 2052, the scraper 205 can move up and down without rotating with the scraper blade 203.

[0037] like Figure 6 As shown, the anti-jamming component includes a limiting piece 2031 installed at the end of the scraper 203 furthest from the center of the scraper disc 205, and a slot on the scraper rod 208 that matches the limiting piece 2031. When the handle 204 and the scraper 203 move downward, the limiting piece 2031 can use the slot to move the scraper rod 208 and the scraper disc 205 downward, thereby minimizing the risk of the scraper disc 205 getting stuck in the middle of the conveyor cylinder 1.

[0038] like Figure 5 As shown, a limiting rod 209 matching the scraper 203 is installed inside the spring 206. The slider 207 is slidably connected to the limiting rod 209, and both ends of the limiting rod 209 are installed on the scraper 205. The limiting rod 209 can ensure the sliding path of the slider 207 and ensure that the scraper 208 slides out of the connecting ring 202 from the discharge port 2022 as much as possible.

[0039] like Figure 1As shown, an insulation cylinder 4 is installed outside the conveying cylinder 1. A steam pipe 401 is connected to the upper end of the insulation cylinder 4, and a water outlet pipe 402 is connected to the bottom end of the insulation cylinder 4. The user can output steam from the steam pipe 401 into the insulation cylinder 4 to avoid yellow phosphorus from cooling and solidifying as much as possible. The water outlet pipe 402 is used to discharge condensate.

[0040] The pressure gauge 1011 and the solenoid valve 211 can be selected from models Y-40 and D941F46-16C, and users can also choose different models according to actual market needs. The solenoid valve 211 is electrically connected to an external power supply, and since the solenoid valve 211 is common knowledge to those skilled in the art, its specific structure, switching method, and working principle will not be described in detail here.

[0041] During use, the conveying cylinder 1 is installed between the workshop and the submersible pump. When yellow phosphorus raw material is needed, the submersible pump is started to transport the yellow phosphorus in the yellow phosphorus pool to the workshop.

[0042] During the conveying process, the magnetic ring 301 inside the conveying cylinder 1 attracts magnets and metal impurities, and the filter screen 201 filters out oxides and phosphides that clump together, thus removing impurities.

[0043] When there are many impurities adsorbed by the magnetic ring 301 and filtered by the filter screen 201 that need to be removed, unscrew the nut, press down the handle 204 to drive the scraper 203 to press down, and the scraper 203 drives the scraper disc 205 to move down, removing some of the impurities from the inner wall of the conveying cylinder 1. Rotate the handle 204 to drive the scraper 203 to rotate and collect the impurities on the filter screen 201. During the rotation of the scraper 203, the scraper rod 208 moves along the scraper 203, pushing the impurities on the scraper 203 from the feed port 2021 into the connecting ring 202, and then discharge them through the drain pipe 210.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, comprising a yellow phosphorus tank, wherein a submersible pump is installed in the yellow phosphorus tank to transport the yellow phosphorus to the workshop, characterized in that, Also includes: A conveying cylinder, wherein a feed pipe is installed at one end of the conveying cylinder, the end of the feed pipe away from the conveying cylinder is installed at the outlet end of a submersible pump, the submersible pump is connected to the feed pipe, a discharge pipe is installed at the bottom end of the conveying cylinder, the discharge pipe is connected to the workshop, and a top cover is installed at the top of the conveying cylinder; The filter screen is installed inside the conveying cylinder; A magnetic suction ring is installed on the outer wall of the conveying cylinder and is located above the filter screen; An anti-clogging mechanism, which is compatible with the filter screen; The anti-clogging mechanism includes a connecting ring, a scraper that matches the filter screen is installed on the outside of the connecting ring, a handle is installed on the top of the conveying cylinder, and the connecting ring is installed at the bottom of the handle.

2. The impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, as described in claim 1, is characterized in that, A pressure gauge matching the anti-clogging component is installed on the feed pipe.

3. The impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, as described in claim 1, is characterized in that... The feed pipe is equipped with an inlet for introducing nitrogen into the conveying cylinder.

4. The impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, according to any one of claims 1-3, characterized in that, A scraper is installed inside the conveying cylinder. The scraper is located above the connecting ring. The scraper is matched with the magnetic ring. A sewage discharge component that matches the anti-clogging mechanism is installed on the scraper.

5. The impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, as described in claim 4, is characterized in that, The sewage discharge assembly includes a spring installed inside a scraper disc. A groove matching the spring is formed inside the scraper disc. One end of the spring near the center of the scraper disc is mounted on the scraper disc, and the other end of the spring is mounted on a slider matching the groove. A scraper rod matching the scraper blade is mounted on the slider. An inlet and outlet matching the scraper rod are formed on the outer wall of the connecting ring. A sewage discharge pipe matching the inlet is installed at the bottom of the filter screen. The sewage discharge pipe communicates with the outer wall of the conveying cylinder. An electrically controlled valve is installed at the end of the sewage discharge pipe near the filter screen. A limiting assembly matching the scraper disc is installed inside the conveying cylinder, and an anti-jamming assembly matching the scraper disc is installed on the scraper rod.

6. The impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, as described in claim 5, is characterized in that, The limiting component includes a limiting block, which is mounted on the scraper, and the inner wall of the conveying cylinder is provided with a limiting groove that matches the limiting block.

7. The impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, as described in claim 5, is characterized in that, The anti-jamming component includes a limiting piece installed at the end of the scraper blade away from the center of the scraper disk, and the scraper rod has a slot that matches the limiting piece.

8. The impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, as described in claim 5, is characterized in that, The spring has a limiting rod that matches the scraper blade, and the slider is slidably connected to the limiting rod. Both ends of the limiting rod are mounted on the scraper disc.

9. An impurity filtration device for yellow phosphorus, a raw material in the production of phosphorus trichloride, according to any one of claims 1-3, characterized in that, An insulation cylinder is installed on the outside of the conveying cylinder. A steam pipe is installed at the upper end of the insulation cylinder, and a water outlet pipe is installed at the bottom end of the insulation cylinder.

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