Hydrochloric acid purification equipment

Abstract

The utility model provides hydrochloric acid purification equipment and relates to the technical field of hydrochloric acid purification. The device comprises a liquid inlet pipeline and a liquid outlet pipeline, two purification units are arranged between the liquid inlet pipeline and the liquid outlet pipeline, each purification unit comprises a box body, a box cover is arranged at the top of the box body, the liquid inlet pipeline is communicated with the top of the box cover, the liquid outlet pipeline is communicated with the bottom of the box body, a first filter assembly is arranged in the box body, and a second filter assembly is arranged in the box body. And a second filtering assembly is arranged in the box body at the lower part of the first filtering assembly. According to the utility model, two sets of purification units are arranged, so that one set of purification unit works normally, the other set of purification unit is standby, and hydrochloric acid filtering operation can be realized by switching the purification units when the filtering structure is cleaned.

Description

Technical Field

[0001] This utility model relates to the field of hydrochloric acid purification technology, specifically to a hydrochloric acid purification device. Background Technology

[0002] Hydrochloric acid is an aqueous solution of hydrogen chloride. It has a wide range of industrial applications. Hydrochloric acid is a colorless and transparent liquid with a strong pungent odor and high corrosiveness. In the chemical industry, hydrochloric acid has many important applications and plays a decisive role in the quality of products. Hydrochloric acid can be used to pickle steel and is also a chemical reagent required for the large-scale preparation of many inorganic and organic compounds.

[0003] In existing technologies, during hydrochloric acid filtration and purification, impurities gradually accumulate in the filter structure as filtration progresses, requiring cleaning. Due to the high corrosiveness of hydrochloric acid, cleaning the filter equipment takes a certain amount of time, leading to interruptions in the hydrochloric acid filtration operation and affecting the filtration process. Alternatively, a separate set of filter equipment may be used, making the operation cumbersome. Utility Model Content

[0004] The purpose of this invention is to develop a hydrochloric acid purification device that has two sets of purification units, one of which operates normally while the other is on standby. When cleaning the filter structure, switching between purification units can maintain the hydrochloric acid filtration process.

[0005] This utility model is achieved through the following technical solution:

[0006] A hydrochloric acid purification device, comprising:

[0007] Inlet and outlet pipelines;

[0008] Two purification units are located between the inlet and outlet liquid lines;

[0009] The purification unit includes a box, the top of which is covered, the inlet pipe is connected to the top of the cover, and the outlet pipe is connected to the bottom of the box.

[0010] The housing contains a first filter assembly, and the housing below the first filter assembly contains a second filter assembly.

[0011] Optionally, the box body is frustum-shaped, with the larger diameter end of the box body facing upwards and being the open end, and the box lid is movably connected to the open end of the box body.

[0012] Optionally, the first filter assembly includes an annular support ring, the outer diameter of which is adapted to the inner wall of the housing, and a filter bag is disposed inside the support ring, the filter bag being a concave spherical crown shape.

[0013] Optionally, the inner edge of the support ring is provided with a connecting ring, the connecting ring is frustum-shaped and its large diameter end is connected to the inner edge of the first pad ring, and the filter bag is connected to the connecting ring.

[0014] Optionally, the top center of the cover has a circular manifold, and the bottom of the manifold has multiple vertically arranged liquid distribution pipes. The liquid distribution pipes are evenly arranged at the bottom of the manifold and communicate with the inside of the manifold. The arrangement area of ​​the liquid distribution pipes is a circle with a diameter smaller than that of the connecting ring, and the liquid inlet pipe is connected to the manifold.

[0015] Optionally, a first gasket ring is provided on the inner wall of the box, the outer diameter of the support ring is adapted to the shape and size of the inner wall of the box at the top of the first gasket ring, and the inner diameter of the support ring is smaller than the inner diameter of the first gasket ring.

[0016] Optionally, the inner wall of the top of the box cover is provided with a cylindrical top ring, the top ring is coaxial with the box body, the top ring is directly above the first pad ring, and the bottom end of the top ring is adapted to the support ring.

[0017] Optionally, the second filter assembly includes a filter frame with a frustum-shaped profile that fits the inner wall of the housing. The filter frame includes multiple annular filter frames arranged vertically. The diameter of the multiple filter frames gradually increases from bottom to top, and their outer walls contact the inner wall of the housing. Multiple support rods connect adjacent filter frames. A filter screen is provided inside each filter frame.

[0018] Optionally, the support rod contacts the inner wall of the housing, the support rod is arranged along the generatrix of the frustum-shaped contour of the filter frame, multiple support rods are arranged at equal intervals on the circular trajectory of the filter frame, the mesh size of the filter screen in multiple filter frames gradually decreases from top to bottom, and a second gasket ring is provided on the inner wall of the housing at the bottom of the filter frame.

[0019] Optionally, the liquid inlet pipeline includes a main liquid inlet pipe and two branch liquid inlet pipes connected to each other. A three-way valve is provided between the main liquid inlet pipe and the two branch liquid inlet pipes. The two branch liquid inlet pipes are respectively connected to the top of the cover of the two purification units.

[0020] The liquid outlet pipeline includes a main liquid outlet pipe and two branch liquid outlet pipes connected to each other. A three-way valve is provided between the main liquid outlet pipe and the two branch liquid outlet pipes. The two branch liquid outlet pipes are respectively connected to the bottom of the housing of the two purification units.

[0021] The beneficial effects of this utility model are:

[0022] This utility model is equipped with two purification units. When one is working normally, the other can be used as a backup or for impurity cleaning, so that the hydrochloric acid filtration and purification operation is not stopped when a malfunction occurs or impurities need to be cleaned.

[0023] The manifold and its bottom distribution pipe ensure that the hydrochloric acid entering the chamber for filtration is evenly distributed onto the filter bag and then evenly distributed onto the multiple filter screens below. This prevents the hydrochloric acid from concentrating in one part of the filtration structure and affecting the filtration effect. The filtration structure performs filtration in multiple places, so that the filtered impurities are evenly distributed on the filtration structure, extending the cleaning cycle of the filtration structure.

[0024] The mesh size of multiple filters inside the filter frame gradually decreases, achieving graded filtration. Each level of filter intercepts impurities of a corresponding size, improving the filtration effect. The dispersion of impurities across multiple filter screens also extends the cleaning cycle.

[0025] The top ring not only secures the first filter assembly but also prevents hydrochloric acid from entering the connection between the housing and the cover, thus preventing hydrochloric acid leakage and corrosion of the seals between the housing and the cover. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application 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 of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a structural diagram of the present utility model;

[0028] Figure 2 This is a diagram of the filter frame structure.

[0029] Reference numerals in the attached diagram: 1. Box body; 2. Box cover; 3. Inlet manifold; 4. Three-way valve; 5. Main inlet pipe; 6. Outlet manifold; 7. Second gasket; 8. Main outlet pipe; 9. Manifold; 10. Divider pipe; 11. Top ring; 12. First gasket; 13. Support ring; 14. Connecting ring; 15. Filter bag; 16. Filter frame; 17. Support rod; 18. Filter screen. Detailed Implementation

[0030] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0034] like Figure 1 and Figure 2 As shown, this utility model discloses a hydrochloric acid purification device, including an inlet pipe and an outlet pipe. Two purification units are connected between the inlet pipe and the outlet pipe. Both purification units can filter hydrochloric acid. When one purification unit is working normally, the other is cleaned or kept on standby.

[0035] The purification unit includes a housing 1, and a hinged cover 2 is provided on the top of the housing 1. The housing 1 is truncated cone-shaped, with the larger diameter end of the housing 1 facing upwards and being the open end. The cover 2 is movably connected to the open end of the housing 1.

[0036] The housing 1 is equipped with a first filter assembly, and the housing 1 below the first filter assembly is also equipped with a second filter assembly. Both the first filter assembly and the second filter assembly are detachably installed in the housing 1.

[0037] The first filter assembly includes a first gasket 12 disposed on the inner wall of the housing 1, the first gasket 12 being arranged along the inner wall of the housing 1. A support ring 13 is provided on the first gasket 12, the support ring 13 being circular and its outer diameter being adapted to the shape and size of the inner wall of the housing 1 at the top of the first gasket 12.

[0038] The inner diameter of the support ring 13 is smaller than the inner diameter of the first pad ring 12. A connecting ring 14 is provided on the inner edge of the support ring 13. The connecting ring 14 is frustum-shaped and its large diameter end is connected to the inner edge of the support ring 13. A filter bag 15 is connected inside the connecting ring 14. The filter bag 15 is a concave spherical crown shape.

[0039] A top ring 11 is provided on the inner wall of the top of the cover 2. The top ring 11 is cylindrical and coaxial with the box body 1. The top ring 11 is located directly above the first gasket 12, and the bottom end of the top ring 11 is adapted to the support ring 13. When the cover 2 is placed on the box body 1, the bottom end of the top ring 11 presses on the support ring 13, so that the support ring 13 is tightly pressed on the first gasket 12. The top ring 11, the support ring 13, and the first gasket 12 are in close contact in sequence, which not only fixes the first filter assembly and prevents it from moving, but also ensures that the sealing connection between the cover 2 and the box body 1 is located outside the top ring 11, preventing hydrochloric acid from entering the sealing connection between the box body 1 and the cover 2 during the filtration process and affecting its sealing performance.

[0040] The second filter assembly includes a second gasket 7 disposed on the inner wall of the housing 1, with the second gasket 7 arranged along the inner wall of the housing 1. A filter frame is mounted on the second gasket 7, the filter frame having a frustum-shaped profile, its shape adapting to the inner wall of the housing 1 at the top of the second gasket 7. The filter frame includes three filter frames 16 with gradually increasing diameters from bottom to top. All three filter frames 16 are annular and coaxial with the housing 1, with their outer walls contacting the inner wall of the housing 1. The bottom filter frame 16 presses against the second gasket 7. Multiple support rods 17 connect adjacent filter frames 16, contacting the inner wall of the housing 1. The support rods 17 are arranged along the generatrix of the frustum-shaped profile of the filter frame, and are evenly spaced along the annular trajectory of the filter frames 16. A filter screen 18 is disposed within each filter frame 16, with the mesh size of the filter screen 18 gradually decreasing from top to bottom within the three filter frames 16.

[0041] The top center of the cover 2 is provided with a manifold 9, which is circular. At the bottom of the manifold 9, there are multiple vertically arranged liquid distribution pipes 10. The liquid distribution pipes 10 are evenly arranged at the bottom of the manifold 9 and communicate with the inside of the manifold 9. The arrangement area of ​​the liquid distribution pipes 10 is a circle with a diameter smaller than that of the connecting ring 14.

[0042] The liquid inlet pipeline includes a main liquid inlet pipe 5 and two branch liquid inlet pipes 3 connected to each other. A three-way valve 4 is provided between the main liquid inlet pipe 5 and the two branch liquid inlet pipes 3. The two branch liquid inlet pipes 3 are respectively connected to the manifold 9 on the top of the two purification unit box covers 2.

[0043] The liquid outlet pipeline includes a main liquid outlet pipe 8 and two branch liquid outlet pipes 6 connected to each other. A three-way valve 4 is provided between the main liquid outlet pipe 8 and the two branch liquid outlet pipes 6. The two branch liquid outlet pipes 6 are respectively connected to the bottom of the two purification unit boxes 1.

[0044] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A hydrochloric acid purification device, characterized in that, include: Inlet and outlet pipelines; Two purification units are located between the inlet and outlet liquid lines; The purification unit includes a box, the top of which is covered, the inlet pipe is connected to the top of the cover, and the outlet pipe is connected to the bottom of the box. The housing contains a first filter assembly, and the housing below the first filter assembly contains a second filter assembly.

2. The hydrochloric acid purification equipment according to claim 1, characterized in that, The box body is shaped like a frustum, with the larger diameter end of the box body facing upwards and being the open end. The box lid is movably connected to the open end of the box body.

3. The hydrochloric acid purification equipment according to claim 2, characterized in that, The first filter assembly includes an annular support ring, the outer diameter of which is adapted to the inner wall of the housing, and a filter bag is provided inside the support ring, the filter bag being a concave spherical crown shape.

4. The hydrochloric acid purification equipment according to claim 3, characterized in that, The inner edge of the support ring is provided with a connecting ring, which is frustoconical and its large diameter end is connected to the inner edge of the first pad ring. The filter bag is connected to the connecting ring.

5. The hydrochloric acid purification equipment according to claim 4, characterized in that, The top center of the cover has a circular manifold, and the bottom of the manifold has multiple vertically arranged liquid distribution pipes. The liquid distribution pipes are evenly arranged at the bottom of the manifold and communicate with the inside of the manifold. The arrangement area of ​​the liquid distribution pipes is a circle with a diameter smaller than the connecting ring. The liquid inlet pipe is connected to the manifold.

6. The hydrochloric acid purification equipment according to claim 4, characterized in that, A first gasket ring is provided on the inner wall of the box. The outer diameter of the support ring is adapted to the shape and size of the inner wall of the box at the top of the first gasket ring, and the inner diameter of the support ring is smaller than the inner diameter of the first gasket ring.

7. The hydrochloric acid purification equipment according to claim 6, characterized in that, The inner wall of the top of the box cover is provided with a cylindrical top ring. The top ring is coaxial with the box body and is located directly above the first pad ring. The bottom end of the top ring is adapted to the support ring.

8. The hydrochloric acid purification equipment according to claim 2, characterized in that, The second filter assembly includes a filter frame, the filter frame having a frustum shape that fits the inner wall of the housing, the filter frame including multiple annular filter frames arranged vertically, the diameter of the multiple filter frames gradually increasing from bottom to top and the outer wall contacting the inner wall of the housing, multiple support rods connecting the vertically adjacent filter frames, and filter screens provided inside the filter frames.

9. The hydrochloric acid purification equipment according to claim 8, characterized in that, The support rod contacts the inner wall of the box. The support rod is arranged along the generatrix of the frustum-shaped contour of the filter frame. Multiple support rods are arranged at equal intervals on the circular trajectory of the filter frame. The mesh size of the filter screen in multiple filter frames gradually decreases from top to bottom. A second gasket ring is provided on the inner wall of the box at the bottom of the filter frame.

10. The hydrochloric acid purification equipment according to any one of claims 1 to 9, characterized in that, The liquid inlet pipeline includes a main liquid inlet pipe and two branch liquid inlet pipes connected to each other. A three-way valve is provided between the main liquid inlet pipe and the two branch liquid inlet pipes. The two branch liquid inlet pipes are respectively connected to the top of the cover of the two purification units. The liquid outlet pipeline includes a main liquid outlet pipe and two branch liquid outlet pipes connected to each other. A three-way valve is provided between the main liquid outlet pipe and the two branch liquid outlet pipes. The two branch liquid outlet pipes are respectively connected to the bottom of the housing of the two purification units.

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