CN212440316U - Reverse acid dip pickle of metal filter core - Google Patents
Reverse acid dip pickle of metal filter core Download PDFInfo
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- CN212440316U CN212440316U CN202021031397.8U CN202021031397U CN212440316U CN 212440316 U CN212440316 U CN 212440316U CN 202021031397 U CN202021031397 U CN 202021031397U CN 212440316 U CN212440316 U CN 212440316U
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Abstract
The utility model relates to a reverse pickling device for metal filter elements, which comprises a filter tank body, a clear liquid outlet valve, a filter element assembly, a flushing valve, an acid liquid valve, a cleaning valve, a back flushing valve, a pressure regulating valve and a back flushing air source; the acid liquid valve and the cleaning valve are respectively connected with the flushing valve through pipelines, and the flushing valve is communicated with the interior of the filter element assembly filter element and used for inputting clear water and acid liquid into the filter element assembly; the back-blowing air source, the pressure regulating valve and the back-blowing valve are sequentially connected through pipelines, and the back-blowing valve is connected with the flushing valve through a pipeline and used for providing back-blowing air for the filter element assembly; the filter element assembly is connected with the clear liquid outlet valve, and the clear liquid outlet valve discharges the cleaned/acid liquid out of the filter tank body through a pipeline. The process has the advantages that the acid washing effect on the metal filter element is good under the conditions of low operation pressure and dilute acid liquor, and meanwhile, the process is low in acid consumption and suitable for cleaning the metal filter element on large-scale precise filtering equipment.
Description
Technical Field
The utility model relates to a filter core washs the field, concretely relates to reverse pickling plant of metal filter core.
Background
The ternary precursor of the lithium battery positive material is usually subjected to precise filtration to concentrate suspended matters in the material in the production process, and the material particles are extremely fine and are easy to block a filter element to reduce the flux of the filter element, so that the filter element is subjected to acid washing after being used for a certain time, and the particles blocked in the pores of the filter element are dissolved to recover the flux of the filter element. Because the strength and the corrosion resistance of the metal filter element are greatly different from those of a plastic filter element and a ceramic filter element, the metal filter element cannot be cleaned by an acid washing process of the plastic filter element or the ceramic filter element.
The defects of the prior art are as follows: for large-scale filtering equipment, the forward pickling requires acid liquor to immerse the filter element, so that the required acid liquor amount is large, and the cost for recovering and treating the acid liquor is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a reverse pickling installation of metal filter element, has better pickling effect to metal filter element under lower operating pressure and more rare acidizing fluid condition, and this technology consumes the acid volume less simultaneously, is fit for wasing the metal filter element on the large-scale precision filtration equipment.
The purpose of the utility model is realized through the following technical scheme:
a reverse pickling device for metal filter elements comprises a filter tank body, a clear liquid outlet valve, a filter element assembly, a flushing valve, an acid liquid valve, a cleaning valve, a back flushing valve, a pressure regulating valve and a back flushing air source;
the acid liquid valve and the cleaning valve are respectively connected with the flushing valve through pipelines, and the flushing valve is communicated with the interior of the filter element assembly filter element and used for inputting clear water and acid liquid into the filter element assembly;
the back-blowing air source, the pressure regulating valve and the back-blowing valve are sequentially connected through pipelines, and the back-blowing valve is connected with the flushing valve through a pipeline and used for providing back-blowing air for the filter element assembly;
the filter element assembly is connected with the clear liquid outlet valve, and the clear liquid outlet valve discharges the cleaned/acid liquid out of the filter tank body through a pipeline.
Furthermore, the top of the filter tank body is provided with a vent valve.
Further, a tank bottom valve is arranged at the bottom of the filter tank body.
Further, the acid liquid valve and the cleaning valve are arranged at the upper part of the filter tank body.
Furthermore, the filter element assemblies comprise one or more groups, each corresponding group of filter element assemblies is provided with a clear liquid valve and a flushing valve, and the multiple groups of filter element assemblies share one group of acid liquid valve and one group of cleaning valves;
or each group of filter element component is respectively connected with a group of acid liquid valve and a cleaning valve.
The difference between the use of multiple purge valves and a single purge valve is that multiple purge valves may be cleaned simultaneously, while a single purge valve must be cleaned individually and sequentially due to flow restrictions.
Furthermore, the multiple groups of filter element assemblies share one group of back-blowing air source, pressure regulating valve and back-blowing valve, namely the back-blowing valve is respectively connected with the flushing valves of the multiple groups of filter element assemblies;
or each group of filter element component is provided with a group of back-blowing air source, a pressure regulating valve and a back-blowing valve.
The advantage of using multiple sets of back-blowing air sources, pressure regulating valves and back-blowing valves is that the back-blowing effect is good, but the cost is higher, and the advantage of using a single set of back-blowing air sources, pressure regulating valves and back-blowing valves is that the cost is low, but the process time is longer.
The utility model has the advantages that:
(1) the pickling solution does not need to immerse the filter element, and the amount of the used acid solution is small;
(2) the filter element can still have better cleaning effect under the condition of limited acid concentration;
(3) the process is simple, and full-automatic control is easy to realize;
(4) the cleaned substances can be recovered in the form of solution, and the environment is not polluted;
(5) the pickling effect of each filter element is relatively uniform.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1, a reverse pickling device for metal filter elements comprises a filter tank body 1, a clear liquid outlet valve 2, a filter element assembly 3, a flushing valve 5, an acid liquid valve 6, a cleaning valve 7, a back-flushing valve 8, a pressure regulating valve 9 and a back-flushing air source 10;
the acid liquid valve 6 and the cleaning valve 7 are respectively connected with the flushing valve 5 through pipelines, and the flushing valve 5 is communicated with the interior of the filter element assembly 3 and is used for inputting clean water and acid liquid into the filter element assembly 3;
the back-blowing air source 10, the pressure regulating valve 9 and the back-blowing valve 8 are sequentially connected through pipelines, and the back-blowing valve 8 is connected with the flushing valve 5 through a pipeline and used for providing back-blowing air for the filter element assembly 3;
the filter element assembly 3 is connected with a clear liquid outlet valve 2, and the clear liquid outlet valve 2 discharges the cleaned/acid liquid out of the filter tank body 1 through a pipeline.
As a preferred embodiment, the top of the filter tank body 1 is provided with an emptying valve 4, the bottom of the filter tank body 1 is provided with a tank bottom valve 11, and the acid liquor valve 6 and the cleaning valve 7 are arranged at the upper part of the filter tank body 1.
As a preferred embodiment, the filter element assemblies 3 comprise one or more groups, each group of corresponding filter element assemblies 3 is provided with a clear liquid valve 2 and a flushing valve 5, and the groups of filter element assemblies 3 share one group of acid liquid valve 6 and a cleaning valve 7;
or each group of filter element assemblies 3 is respectively connected with a group of acid liquid valves 6 and a cleaning valve 7.
As a preferred embodiment, the multiple groups of filter core assemblies 3 share one group of blowback air source 10, pressure regulating valve 9 and blowback valve 8, namely the blowback valve 8 is respectively connected with the flushing valves 5 of the multiple groups of filter core assemblies 3;
or each group of filter element assemblies 3 is provided with a group of back-blowing air sources 10, a pressure regulating valve 9 and a back-blowing valve 8.
If a plurality of groups of filter elements exist, the acid cleaning is carried out on the plurality of groups of filter elements in turn, the acid cleaning is carried out on one group of filter elements each time, and the acid cleaning steps of the filter elements which are currently subjected to the acid cleaning are as follows:
1) closing the clear liquid outlet valve 2, closing the emptying valve 4, opening the flushing valve 5, closing the cleaning valve 7, closing the back flushing valve 8 and opening the tank bottom valve 11;
2) opening the acid liquid valve 6, and injecting acid liquid into the filter element assembly 3 until the filter element assembly 3 is filled with the acid liquid;
3) adjusting the acid liquor valve 6 to ensure that the pressure in the filter element assembly 3 is higher than the pressure in the outer side by 0.1Mpa, so that the acid liquor flows into the inner side of the filter element, permeates out of the filter element through the pores of the filter element, is collected below the filter and is discharged from the tank bottom valve 11;
4) after pickling for 60 minutes continuously according to the step 3), closing the acid liquor valve 6, opening the emptying valve 4, and draining the acid liquor in the filter 1 through the tank bottom valve 11;
5) opening the cleaning valve 6, washing the filter element assembly 3 by using clean water, collecting the clean water after permeating from the filter element to the outside of the filter element to the bottom of the filter 1, discharging the clean water through the tank bottom valve 11, and closing the cleaning valve 7 after washing for 5 minutes;
6) adjusting the air pressure at the outlet of the pressure regulating valve 9 to be 0.15Mpa, opening a back flushing valve 8, and carrying out back flushing for 2 minutes by using gas;
7) and opening a clear liquid outlet valve 2, closing a flushing valve 5, closing an emptying valve 4, closing a tank bottom valve 11, closing an acid liquid valve 6, closing a cleaning valve 7, closing a back flushing valve 8 and returning to a normal filtering process.
Wherein the acid solution for acid cleaning is dilute sulfuric acid with the pH value of 1, the medium for washing with clear water is pure water or deionized water, and the medium for back blowing is clean compressed air or nitrogen. If a plurality of groups of filter elements are arranged, the acid cleaning is carried out on the plurality of groups of filter elements in turn, and the acid cleaning is carried out on one group of filter elements each time.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. A reverse pickling device for metal filter elements is characterized by comprising a filter tank body (1), a clear liquid outlet valve (2), a filter element assembly (3), a flushing valve (5), an acid liquid valve (6), a cleaning valve (7), a back flushing valve (8), a pressure regulating valve (9) and a back flushing air source (10);
the acid liquid valve (6) and the cleaning valve (7) are respectively connected with the flushing valve (5) through pipelines, and the flushing valve (5) is communicated with the interior of the filter element assembly (3) and is used for inputting clear water and acid liquid into the filter element assembly (3);
the back-blowing air source (10), the pressure regulating valve (9) and the back-blowing valve (8) are sequentially connected through pipelines, and the back-blowing valve (8) is connected with the flushing valve (5) through a pipeline and used for providing back-blowing air for the filter element assembly (3);
the filter element assembly (3) is connected with the clear liquid outlet valve (2), and the clear liquid outlet valve (2) discharges the cleaned/acid liquid out of the filter tank body (1) through a pipeline.
2. The reverse pickling device for metal filter elements according to claim 1, characterized in that a vent valve (4) is arranged at the top of the filter tank body (1).
3. A reverse pickling device for metal filter elements according to claim 1, characterized in that the bottom of the filter tank (1) is provided with a tank bottom valve (11).
4. A reverse pickling device for metal filter elements according to claim 1, characterized in that the acid liquid valve (6) and the cleaning valve (7) are arranged at the upper part of the filter tank (1).
5. The metal filter element reverse pickling device according to claim 1, wherein the filter element assemblies (3) comprise one or more groups, each corresponding group of filter element assemblies (3) is provided with a clear liquid valve (2) and a flushing valve (5), and the groups of filter element assemblies (3) share one group of acid liquid valve (6) and one group of cleaning valves (7);
or each group of filter element components (3) is respectively connected with a group of acid liquid valve (6) and a cleaning valve (7).
6. The reverse pickling device for metal filter elements according to claim 1, wherein the multiple groups of filter element assemblies (3) share one group of blowback air source (10), pressure regulating valve (9) and blowback valve (8), i.e. the blowback valve (8) is respectively connected with the flushing valves (5) of the multiple groups of filter element assemblies (3);
or each group of filter element assemblies (3) is provided with a group of back-blowing air sources (10), a pressure regulating valve (9) and a back-blowing valve (8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589401 | 2019-09-24 | ||
| CN201921589401X | 2019-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212440316U true CN212440316U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021031397.8U Active CN212440316U (en) | 2019-09-24 | 2020-06-08 | Reverse acid dip pickle of metal filter core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212440316U (en) |
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2020
- 2020-06-08 CN CN202021031397.8U patent/CN212440316U/en active Active
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