Sulfuric acid tank filtering device

Abstract

The utility model discloses a sulfuric acid tank filtering device which comprises a cylinder body, the top of the cylinder body is detachably connected with an end cover, and a glass window is arranged on the end cover; an acid liquor inlet pipe and an acid liquor outlet pipe are connected to the left side and the right side of the barrel at the same height, a filter basket with an inclined top opening is placed in the barrel, the filter basket is tightly attached to the inner wall of the barrel, and the higher side of the top of the filter basket just blocks a pipe opening of the acid liquor outlet pipe. The utility model effectively solves the problem that the valve core and the valve seat of the sulfuric acid metering pump in the existing production system are blocked after solid particles are sucked into the valve core and the valve seat.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure leaching in hydrometallurgy, and particularly relates to a sulfuric acid tank filtering device. Background Art

[0002] The oxygen pressure leaching system in hydrometallurgy is usually a sulfuric acid system, and a pure sulfate solution is produced by preparing a slurry of raw materials, salt solution and sulfuric acid to meet the requirements of technical conditions. The sulfuric acid metering pump mainly pumps 93% concentrated sulfuric acid in the sulfuric acid tank into the system to provide acidity for the production system. During the production process, due to the difficulty in cleaning the sulfuric acid tank, solid particles such as acid sludge are deposited at the bottom for a long time. Once they enter the sulfuric acid metering pump, they will cause the valve core and valve seat to be stuck. Further, it will lead to a shortage of acid in the production system, affecting the reaction effect of the slurry and various production technical and economic indicators. Content of the Utility Model

[0003] The purpose of the utility model is to provide a sulfuric acid tank filtering device, which solves the problem of blockage and interruption of the valve core and valve seat of the sulfuric acid metering pump in the existing production system after inhaling solid particles.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A sulfuric acid tank filtering device includes a cylinder body, the top of the cylinder body is detachably connected with an end cover, and a glass window is installed on the end cover; acid liquid inlet pipes and acid liquid outlet pipes are connected to the left and right sides of the cylinder body at the same height. A filter basket with an inclined top opening is placed inside the cylinder body. The filter basket is in close contact with the inner wall of the cylinder body, and the higher side of the top of the filter basket just blocks the pipe orifice of the acid liquid outlet pipe.

[0006] The utility model has the following beneficial effects:

[0007] The utility model selects 316L stainless steel anti-corrosion material, which can meet the long-term use of the device in the sulfuric acid system and oxidation atmosphere. The communicating vessel structure of the inlet and outlet pipes and the cylinder body can better guide the concentrated sulfuric acid. The filter basket with an inclined surface design enhances the filtering performance. The end cover at the top of the cylinder body is equipped with an arc-shaped glass window, which is convenient for the post to regularly observe the liquid level inside the filtering device. A drain plug is arranged at the bottom of the cylinder body, which is convenient for discharging the residual concentrated sulfuric acid and deposited acid sludge in the cylinder body during maintenance. In summary, the utility model effectively solves the problem of blockage failure of the valve core and valve seat of the sulfuric acid metering pump in the existing production system after inhaling solid particles. Description of the Drawings

[0008] Figure 1 It is a structural schematic diagram of the utility model.

[0009] In the figure, 1 - cylinder body, 2 - end cover, 3 - acid liquid inlet pipe, 4 - glass window, 5 - filter basket, 6 - acid liquid outlet pipe, 7 - drain plug. Detailed implementation mode

[0010] The following further explains and illustrates the present utility model in conjunction with the accompanying drawings.

[0011] As Figure 1 shown, a sulfuric acid tank filtering device includes a Φ200mm cylinder body 1. A cover 2 is detachably connected to the top of the cylinder body 1, and a Φ50mm glass window 4 is installed on the cover 2. Acid inlet pipes 3 and acid outlet pipes 6 with a diameter of Φ16mm are connected to the left and right sides of the cylinder body 1 at the same height. A Φ190mm filter basket 5 with an inclined top opening is placed inside the cylinder body 1. The filter basket 5 is in close contact with the inner wall of the cylinder body 1, and the higher side of the top of the filter basket 5 just blocks the nozzle of the acid outlet pipe 6.

[0012] Further, a circular glass window 4 is provided on the cover 2, and the staff can observe the liquid level inside the filtering device through the glass window 4.

[0013] Further, the upper part of the filter basket 5 is designed with an inclined surface and has Φ5mm filter holes. When working, larger solid particles such as acid slag are blocked and deposited at the bottom of the filter basket 5, and smaller particles such as acid sludge pass through the filter basket and are deposited at the bottom of the cylinder body 1. The clean concentrated sulfuric acid enters the sulfuric acid metering pump through the acid outlet pipe 6.

[0014] Further, the acid inlet pipe 3, the acid outlet pipe 6 and the cylinder body 1 form a communicating vessel structure. When concentrated sulfuric acid enters the inside of the cylinder body 1 through the acid inlet and outlet pipes, the liquid levels are always kept the same and the flow rate is uniform.

[0015] Further, a drain plug 7 is provided on the side of the bottom of the cylinder body 11. When overhauling and cleaning, after opening the drain plug 7, the residual concentrated sulfuric acid in the filtering device can be drained completely.

[0016] During use, connect the acid inlet pipe 3 to the sulfuric acid storage tank, connect the acid outlet pipe 6 to the sulfuric acid metering pump, use the sulfuric acid metering pump to extract sulfuric acid, and perform regular maintenance. Open the cover 2, take out the filter basket 5, clean it and then put it back.

Claims

1. A sulfuric acid tank filtration device, characterized in that: It includes a cylinder body (1), a end cover (2) is detachably connected to the top of the cylinder body (1), and a glass window (4) is installed on the end cover (2); acid inlet pipes (3) and acid outlet pipes (6) are connected to the left and right sides of the cylinder body (1) at the same height. A filter basket (5) with an inclined top opening is placed inside the cylinder body (1). The filter basket (5) is in close contact with the inner wall of the cylinder body (1), and the higher side of the top of the filter basket (5) just blocks the nozzle of the acid outlet pipe (6).

2. The sulfuric acid tank filtration device according to claim 1, wherein: The filter basket (5) is densely covered with filter holes of Φ5mm.

3. The sulfuric acid tank filtration device according to claim 1, characterized in that: A drain plug (7) is installed on the side of the bottom of the cylinder body (1).

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