Low-grade ground phosphate rock recycling device

Abstract

The utility model discloses a low-grade ground phosphate rock recycling device, which relates to the technical field of ore dust recovery and comprises a dust removal barrel, the lower end of the dust removal barrel is communicated with an air inlet pipe, and the top of the dust removal barrel is communicated with an exhaust pipe A. A filter device, a primary cleaning device and a secondary cleaning device are sequentially arranged in the dust removal barrel from bottom to top. The primary cleaning device comprises an annular pipe A connected with the dust removal barrel and a plurality of cleaning units, and the annular pipe A communicates with the air inlet pipe; the dusty gas flowing into the annular pipe A can flow into any cleaning unit, and the dusty gas cleaned by the cleaning unit flows to the secondary cleaning device; and a solid-liquid mixture generated by cleaning of the cleaning unit flows to the filtering device for solid-liquid separation. A filtering device, a primary cleaning device and a secondary cleaning device are mounted in a dust removal barrel, dust-containing gas is cleaned by the primary cleaning device and the secondary cleaning device to form a solid-liquid mixture, and solid particles in the dust-containing gas are filtered out by the solid-liquid mixture through the filtering device to be recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of ore dust recovery, in particular to a low-grade phosphate rock powder recovery and utilization device. Background Art

[0002] During the processes of phosphate rock crushing, ball milling and drying, dust containing ore powder will be generated. This dust will fly everywhere and pollute the air. This dust containing ore powder will cause great hidden dangers to the health of production personnel. However, some existing ore powder recovery devices still have some fine dust escaping from the separator during the recovery process, which will reduce the recovery rate of dust-containing gas.

[0003] Therefore, a low-grade phosphate rock powder recovery and utilization device is proposed. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a low-grade phosphate rock powder recovery and utilization device.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A low-grade phosphate rock powder recovery and utilization device comprises a dust removal bucket, wherein the lower end of the dust removal bucket is connected to an air inlet pipe, the top of the dust removal bucket is connected to an exhaust pipe A, a filtering device, a primary cleaning device and a secondary cleaning device are sequentially arranged in the dust removal bucket from bottom to top, the primary cleaning device comprises an annular tube A connected to the dust removal bucket and a plurality of cleaning units arranged on the annular tube A, the annular tube A is connected to the air inlet pipe; the dust-containing gas flowing into the annular tube A can flow into any of the cleaning units, and the dust-containing gas cleaned by the cleaning units flows to the secondary cleaning device; the solid-liquid mixture produced by cleaning in the cleaning units flows to the filtering device for solid-liquid separation.

[0007] Furthermore, in the utility model, any of the above-mentioned cleaning units includes an exhaust pipe B connected to the above-mentioned annular pipe A and a liquid storage pipe arranged on the above-mentioned exhaust pipe B, the above-mentioned liquid storage pipe wraps the exhaust section of the above-mentioned exhaust pipe B, and the exhaust section of the above-mentioned exhaust pipe B is provided with a plurality of exhaust holes; the top end of the above-mentioned liquid storage pipe is open and has a bell-mouth structure; the bottom of the above-mentioned liquid storage pipe is provided with a plurality of drip holes.

[0008] Furthermore, in the utility model, the above-mentioned filtering device includes a filter barrel located below the above-mentioned annular tube A, the top of the above-mentioned filter barrel is a conical structure, and a plurality of filter holes are provided on the top of the above-mentioned filter barrel; there is a gap between the outer wall of the above-mentioned filter barrel and the inner wall of the above-mentioned dust removal barrel, and a sewage outlet is provided at the bottom of the above-mentioned dust removal barrel; a drain pipe is provided at the bottom of the above-mentioned dust removal barrel, and the above-mentioned drain pipe is connected to the above-mentioned filter barrel.

[0009] Furthermore, the utility model also includes a scraper device, which includes a driving motor arranged at the bottom of the dust removal barrel, a rotating shaft rotatably connected to the filter barrel, and a scraper that is always in contact with the outer top wall of the filter barrel. The central axis of the rotating shaft is colinear with the central axis of the filter barrel and is transmission-connected to the driving motor. The end of the rotating shaft away from the driving motor extends out of the top of the filter barrel and is connected to the scraper.

[0010] Furthermore, in the utility model, the secondary cleaning device includes a water inlet pipe, an annular pipe B connected to the water inlet pipe, and a plurality of spray nozzles connected to the annular pipe B, the water inlet pipe is passed through the dust removal bucket; the annular pipe B is arranged in the dust removal bucket and is located above the annular pipe A; the plurality of spray nozzles correspond to the plurality of liquid storage pipes one by one up and down.

[0011] The beneficial effects of the utility model are:

[0012] The utility model provides a low-grade phosphate rock powder recycling device. A filtering device, a primary cleaning device and a secondary cleaning device are installed in a dust removal barrel. The dust-containing gas is cleaned by the primary cleaning device and the secondary cleaning device to form a solid-liquid mixture. The solid-liquid mixture is then filtered out of solid particles in the dust-containing gas by the filtering device for recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0015] Figure 3 This is an exploded view of the cleaning unit according to an embodiment of the present utility model.

[0016] In the figure: 101-dust removal barrel; 201-inlet pipe; 301-exhaust pipe A; 401-annular pipe A; 402-exhaust pipe B; 403-liquid storage pipe; 404-exhaust hole; 405-drip hole; 601-filter barrel; 602-filter hole; 701-drain outlet; 702-drain pipe; 801-drive motor; 802-rotating shaft; 803-scraper; 901-water inlet pipe; 902-annular pipe B; 903-spray nozzle. DETAILED DESCRIPTION

[0017] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 , the utility model provides a technical solution:

[0019] A low-grade phosphate rock powder recovery and utilization device comprises a dust removal bucket 101, the lower end of the dust removal bucket 101 is connected to an air inlet pipe 201, the top of the dust removal bucket 101 is connected to an exhaust pipe A301, a filtering device, a primary cleaning device and a secondary cleaning device are sequentially arranged in the dust removal bucket 101 from bottom to top, the primary cleaning device comprises an annular pipe A401 connected to the dust removal bucket 101 and a plurality of cleaning units arranged on the annular pipe A401, the annular pipe A401 is connected to the air inlet pipe 201; the dust-containing gas flowing into the annular pipe A401 can flow into any cleaning unit, and the dust-containing gas cleaned by the cleaning unit flows to the secondary cleaning device; the solid-liquid mixture generated by the cleaning of the cleaning unit flows to the filtering device for solid-liquid separation.

[0020] Specifically, any cleaning unit includes an exhaust pipe B402 connected to the annular pipe A401 and a liquid storage pipe 403 disposed on the exhaust pipe B402. The liquid storage pipe 403 wraps the exhaust section of the exhaust pipe B402, and the exhaust section of the exhaust pipe B402 is provided with a plurality of exhaust holes 404. The top of the liquid storage pipe 403 is open and has a bell-mouth structure. The bottom of the liquid storage pipe 403 is provided with a plurality of drip holes 405. The exhaust pipe B402 is connected to an external dust collection device. When the dust needs to be processed, the dust collection device sends the dust containing ore powder into the annular pipe A401 at a certain pressure through the air inlet pipe 201.

[0021] In order to separate the solid particles in the solid-liquid mixture for recycling, a filtering device is specially designed at the inner bottom of the dust removal bucket 101. The filtering device includes a filtering bucket 601 located below the annular pipe A401, the top of the filtering bucket 601 is a conical structure, and a plurality of filtering holes 602 are opened on the top of the filtering bucket 601; there is a gap between the outer wall of the filtering bucket 601 and the inner wall of the dust removal bucket 101, and a sewage outlet 701 is opened at the bottom of the dust removal bucket 101; a drainage pipe 702 is arranged at the bottom of the dust removal bucket 101, and the drainage pipe 702 is connected to the filtering bucket 601.

[0022] After the solid-liquid mixture flowing out of the cleaning unit flows to the upper surface of the filter barrel 601, if the solid particles therein are excessively accumulated on the upper surface of the filter barrel 601, on the one hand, the filter holes 602 will be blocked; on the other hand, the accumulated solid particles cannot fall into the bottom of the dust removal barrel 101 for discharge, which will reduce the recovery rate of the solid particles. Therefore, a scraper device is specially designed, which includes a drive motor 801 arranged at the bottom of the dust removal barrel 101, a rotating shaft 802 rotatably connected to the filter barrel 601, and a scraper 803 that is always in contact with the outer top wall of the filter barrel 601. The central axis of the rotating shaft 802 is colinear with the central axis of the filter barrel 601, and is transmission-connected to the drive motor 801. The end of the rotating shaft 802 away from the drive motor 801 extends out of the top of the filter barrel 601 and is connected to the scraper 803.

[0023] If the water in the liquid storage pipe 403 cannot completely submerge the exhaust section of the exhaust pipe B402 at some time, it will cause part of the dust-containing gas discharged through the exhaust pipe B402 to flow directly out from the top of the liquid storage pipe 403. In this case, it is necessary to process this part of the dust-containing gas, so a secondary cleaning device is specially designed at the inner top of the dust removal bucket 101, which includes a water inlet pipe 901, an annular pipe B902 connected to the water inlet pipe 901, and a plurality of spray nozzles 903 connected to the annular pipe B902. The water inlet pipe 901 is passed through the dust removal bucket 101, and the water inlet pipe 901 can be connected to an external matching water pump mechanism to facilitate water injection into the annular pipe B902. The annular pipe B902 is arranged in the dust removal bucket 101 and is located above the annular pipe A401; a plurality of spray nozzles 903 correspond to a plurality of liquid storage pipes 403 one by one.

[0024] Working principle:

[0025] When treating dusty gas containing ore powder, firstly, the dust collecting device sends the dusty gas into the annular pipe A401 through the air inlet pipe 201 at a certain pressure, and the dusty gas flows into the liquid storage pipe 403 through a plurality of exhaust holes 404 on the exhaust pipe B402. At the same time, the annular pipe B902 is filled with water, and the water is sprayed out through each spray nozzle 903, and the water mist sprayed by each spray nozzle 903 covers the top opening of each liquid storage pipe 403.

[0026] Then continue to inject water into each liquid storage pipe 403 to completely submerge the exhaust section of the exhaust pipe B402. The dust-containing gas with a certain pressure can enter the water in the liquid storage pipe 403 under the action of pressure, and the solid particles in the dust-containing gas will remain in the water and settle to the bottom of the liquid storage pipe 403. The solid-liquid mixture formed in this process falls to the top of the filter barrel 601 through the drip hole 405. The dust-containing gas filtered by the water in the liquid storage pipe 403 flows upward through the opening of the liquid storage pipe 403, and then is cleaned twice by the water mist generated by the spray nozzle 903, and finally discharged through the exhaust pipe A301. During this process, since there is air pressure in the exhaust pipe B402, the water in the liquid storage tube 403 cannot enter the exhaust pipe B402 through the exhaust hole 404 (for example, when drinking beverages with a straw in daily life, one end of the straw is inserted into the beverage, and the other end is held in the mouth, and then the mouth continuously blows air into the straw. During this process, the gas blown out of the mouth can enter the beverage through the straw. As long as the blowing is not stopped, the beverage cannot enter the straw).

[0027] When the solid-liquid mixture generated during the cleaning process falls to the top of the filter barrel 601, the liquid therein flows into the filter barrel 601 through the filter hole 602, and then is discharged through the drain pipe 702; the solid particles therein remain on the outer top wall of the filter barrel 601. At this time, the drive motor 801 is started, and the scraper 803 moves in a circular motion around the central axis of the rotating shaft 802. The scraper 803 is always in contact with the filter barrel 601 during the rotation process, thereby scraping the solid particles to the bottom of the dust removal barrel 101, and these solid particles containing water are discharged to the matching collection box through the sewage outlet 701 for recycling.

[0028] When all the dusty gases are processed, the water pumping mechanism connected to the water inlet pipe 901 stops pumping water into the annular pipe B902 and stops injecting water into each liquid storage pipe 403. However, the dust collection device continues to work and continues to inject clean air into the exhaust pipe B402, so that there is always air pressure in the exhaust pipe B402 to prevent the water in the liquid storage pipe 403 from flowing into the intake pipe 201 through the exhaust hole 404, the exhaust pipe B402 and the annular pipe A401 in sequence. When the water in the liquid storage pipe 403 leaks out through the drip hole 405, the dust collection device stops working, and the cleaning and recovery of the dusty gas is completed.

[0029] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A low-grade phosphate rock powder recovery and utilization device, comprising a dust removal bucket (101), the lower end of the dust removal bucket (101) being connected to an air inlet pipe (201), and the top of the dust removal bucket (101) being connected to an exhaust pipe A (301), characterized in that: The dust removal bucket (101) is provided with a filtering device, a primary cleaning device and a secondary cleaning device in order from bottom to top; the primary cleaning device comprises an annular pipe A (401) connected to the dust removal bucket (101) and a plurality of cleaning units arranged on the annular pipe A (401); the annular pipe A (401) is in communication with the air inlet pipe (201); the dust-containing gas flowing into the annular pipe A (401) can flow into any of the cleaning units, and the dust-containing gas cleaned by the cleaning units flows to the secondary cleaning device; the solid-liquid mixture generated by the cleaning of the cleaning units flows to the filtering device for solid-liquid separation.

2. The low-grade phosphate rock powder recovery and utilization device according to claim 1, characterized in that: Any of the cleaning units comprises an exhaust pipe B (402) connected to the annular pipe A (401) and a liquid storage pipe (403) arranged on the exhaust pipe B (402), wherein the liquid storage pipe (403) wraps the exhaust section of the exhaust pipe B (402), and the exhaust section of the exhaust pipe B (402) is provided with a plurality of exhaust holes (404); the top end of the liquid storage pipe (403) is open and has a bell-mouth structure; and the bottom of the liquid storage pipe (403) is provided with a plurality of drip holes (405).

3. A low-grade phosphate rock powder recovery and utilization device according to claim 1 or 2, characterized in that: The filtering device comprises a filtering barrel (601) located below the annular tube A (401); the top of the filtering barrel (601) is a conical structure; a plurality of filtering holes (602) are provided on the top of the filtering barrel (601); a gap exists between the outer wall of the filtering barrel (601) and the inner wall of the dust removal barrel (101); a sewage outlet (701) is provided at the bottom of the dust removal barrel (101); and a drainage pipe (702) is provided at the bottom of the dust removal barrel (101); the drainage pipe (702) is connected to the filtering barrel (601).

4. The low-grade phosphate rock powder recovery and utilization device according to claim 3 is characterized in that: The invention also comprises a scraping device, which comprises a driving motor (801) arranged at the bottom of the dust removal barrel (101), a rotating shaft (802) rotatably connected to the filter barrel (601), and a scraper (803) always in contact with the outer top wall of the filter barrel (601), wherein the central axis of the rotating shaft (802) is colinear with the central axis of the filter barrel (601) and is transmission-connected to the driving motor (801); and an end of the rotating shaft (802) away from the driving motor (801) extends out of the top of the filter barrel (601) and is connected to the scraper (803).

5. The low-grade phosphate rock powder recovery and utilization device according to claim 2, characterized in that: The secondary cleaning device comprises a water inlet pipe (901), an annular pipe B (902) connected to the water inlet pipe (901), and a plurality of spray nozzles (903) connected to the annular pipe B (902); the water inlet pipe (901) is passed through the dust removal bucket (101); the annular pipe B (902) is arranged in the dust removal bucket (101) and is located above the annular pipe A (401); and the plurality of spray nozzles (903) correspond to the plurality of liquid storage pipes (403) one by one up and down.

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