CN220003235U - Cleaning structure of pickling filter - Google Patents
Cleaning structure of pickling filter Download PDFInfo
- Publication number
- CN220003235U CN220003235U CN202321304113.1U CN202321304113U CN220003235U CN 220003235 U CN220003235 U CN 220003235U CN 202321304113 U CN202321304113 U CN 202321304113U CN 220003235 U CN220003235 U CN 220003235U
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- China
- Prior art keywords
- acid
- cleaning
- filter
- waste
- control valve
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- 238000004140 cleaning Methods 0.000 title claims abstract description 93
- 238000005554 pickling Methods 0.000 title abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 205
- 239000007788 liquid Substances 0.000 claims abstract description 106
- 239000002699 waste material Substances 0.000 claims abstract description 87
- 238000011084 recovery Methods 0.000 claims description 33
- 239000012535 impurity Substances 0.000 claims description 25
- 238000007599 discharging Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 10
- 239000010865 sewage Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model relates to a cleaning structure of an acid cleaning filter, which comprises a filter box body, a filter element, an acid inlet pipeline, an acid inlet control valve and an acid liquid outlet control valve; the filter elements are respectively arranged in the filter box body; the acid liquor outlet control valve is arranged at the upper part of one side of the filter box body; the inlet end of the filter element is connected with a waste acid liquid collecting component through a cleaning waste liquid discharge pipeline, and the waste acid liquid collecting component is connected to the tail end of the cleaning waste liquid discharge pipeline; the acid inlet pipeline is connected between the acid inlet and the middle upper region of the cleaning waste liquid discharge pipeline; the acid inlet control valve is arranged on the acid inlet pipeline. The utility model can greatly reduce the manual replacement of the filter element and the cleaning times of the pickling line and the working time for replacing and cleaning the filter element each year; and the unblocked acid liquor circulation loop can be effectively ensured, and accidents such as pump burning and the like caused by filter blockage are avoided.
Description
Technical Field
The utility model relates to the technical field of pickling filtration, in particular to a cleaning structure of a pickling filter.
Background
In the acid washing production process of large-scale strip steel, a plurality of filters generally participate in work and are used for filtering impurities insoluble in hydrochloric acid in the acid liquor, so that the acid liquor is kept clean, and acid liquor holes of an acid liquor heater and acid liquor nozzles in an acid regeneration roasting furnace are prevented from being blocked. However, the existing acid washing filter cannot realize self-cleaning, maintenance personnel are required to disassemble the filter periodically for manual cleaning, manpower is wasted, and production efficiency is reduced.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide a cleaning structure of an acid cleaning filter, which can realize automatic cleaning of the acid cleaning filter, save manpower and keep smooth circulation of acid liquor.
The technical scheme adopted by the utility model is as follows:
the utility model provides a cleaning structure of an acid cleaning filter, which comprises a filter box body, a filter element, an acid inlet pipeline, an acid inlet control valve and an acid outlet control valve, wherein the filter box body is provided with a filter core; the filter elements are respectively arranged in the filter box body; the acid liquor outlet control valve is arranged at the upper part of one side of the filter box body; the inlet end of the filter element is connected with a waste acid liquid collecting component through a cleaning waste liquid discharge pipeline, and the waste acid liquid collecting component is connected to the tail end of the cleaning waste liquid discharge pipeline; the acid inlet pipeline is connected between the acid inlet and the middle upper region of the cleaning waste liquid discharge pipeline; the acid inlet control valve is arranged on the acid inlet pipeline.
Preferably, the waste acid liquid collecting assembly comprises a cleaning control valve, a waste acid liquid collecting tank, a liquid level detector, an acid liquid recovery control valve, an acid liquid recovery pump and a waste acid storage tank; the waste acid liquid collecting tank is arranged at the tail end of the cleaning waste liquid discharging pipeline, and a cleaning control valve is arranged at the bottom of the cleaning waste liquid discharging pipeline; the liquid level detector is arranged inside the waste acid liquid collecting tank; one side of the waste acid liquid collecting tank is connected with the waste acid storage tank through a pipeline, and an acid liquid recovery pump and an acid liquid recovery control valve are sequentially arranged on the pipeline.
Preferably, the bottom end of the waste acid liquid collecting tank is provided with an impurity discharge valve.
Preferably, a sewage tank is arranged below the waste acid liquid collecting tank.
Preferably, a liquid level controller is arranged between the liquid level detector and the acid liquor recovery control valve as well as between the liquid level detector and the acid liquor recovery pump.
Preferably, a pressure detection controller is arranged at the acid inlet.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model can greatly reduce the manual replacement and cleaning times of the filter element of the pickling line and the working time for replacing and cleaning the filter element each year.
2. The utility model can effectively ensure the smoothness of the acid liquor circulation loop and avoid the accidents of pump burning and the like caused by the blockage of the filter.
3. Because the impurities in the filter element can be cleaned in time, the acid liquor in the circulating system is cleaner.
4. The utility model is provided with the acid liquor recovery device, so that the amount of acid liquor consumed for cleaning the filter is small.
Drawings
FIG. 1 is a schematic view showing the overall structure of a cleaning structure of an acid cleaning filter according to the present utility model;
FIG. 2 is a schematic diagram of a conventional acid wash filter;
FIG. 3 is a schematic diagram of a conventional strip pickling process.
Wherein, the reference numerals: 1-1# filter element; 2-2# filter element; an acid inlet control valve of the 3-1# filter; 4-2# filter acid inlet control valve; a 5-1# filter cleaning control valve; a 6-2# filter cleaning control valve; 7-an acid liquor outlet control valve; 8-a waste acid liquid collection tank; 9-an impurity discharge valve; 10-a sewage tank; 11-a liquid level detector; 12-an acid liquor recovery control valve; 13-an acid liquor recovery pump; 14-a waste acid storage tank; 15-a liquid level controller; 16-a filter box; 17-1# filter core cleaning waste liquid discharge pipeline; an 18-2# filter element cleaning waste liquid discharge pipeline; 19-a pressure detection controller; 20-acid inlet pipeline.
Detailed Description
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
It should be noted that, in the description of the present utility model, the terms "upper", "lower", "top", "bottom", "one side", "another side", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not mean that the device or element must have a specific orientation, be configured and operated in a specific orientation.
Referring to fig. 1, a specific structure of an embodiment of a cleaning structure of an acid cleaning filter according to the present utility model is shown. The structure comprises a No. 1 filter element 1, a No. 2 filter element 2, a No. 1 filter acid inlet control valve 3, a No. 2 filter acid inlet control valve 4, an acid liquor outlet control valve 7, a filter box 16 and an acid inlet pipeline 20; the No. 1 filter element 1 and the No. 2 filter element 2 are vertically arranged at the left side and the right side of the inside of the filter box 16 respectively and are used for filtering impurities through acid liquor; the acid liquor outlet control valve 7 is arranged at the upper part of one side of the filter box 16 and is in a long-open state generally; the inlet ends of the No. 1 filter element 1 and the No. 2 filter element 2 are respectively connected with a waste acid liquid collecting component through a No. 1 filter element cleaning waste liquid discharging pipeline 17 and a No. 2 filter element cleaning waste liquid discharging pipeline 18, and the waste acid liquid collecting component is connected to the tail ends of the No. 1 filter element cleaning waste liquid discharging pipeline 17 and the No. 2 filter element cleaning waste liquid discharging pipeline 18; the acid inlet pipeline 20 is respectively connected between the acid inlet and the middle upper region of the No. 1 filter element cleaning waste liquid discharge pipeline 17 and between the acid inlet and the middle upper region of the No. 2 filter element cleaning waste liquid discharge pipeline 18; the # 1 filter acid feed control valve 3 and the # 2 filter acid feed control valve 4 are respectively installed on an acid feed line 20 connected to the # 1 filter cleaning waste liquid discharge line 17 and the # 2 filter cleaning waste liquid discharge line 18.
The acid inlet is provided with a pressure detection controller 19 for detecting the pressure of the acid liquor circulation loop including the filter.
In this embodiment, the waste acid liquid collecting assembly includes a # 1 filter cleaning control valve 5, a # 2 filter cleaning control valve 6, a waste acid collecting tank 8, an impurity discharging valve 9, a sewage tank 10, a liquid level detector 11, an acid liquid recovery control valve 12, an acid liquid recovery pump 13, a waste acid storage tank 14 and a liquid level controller 15; the waste acid liquid collecting tank 8 is connected to the tail ends of a No. 1 filter element cleaning waste liquid discharging pipeline 17 and a No. 2 filter element cleaning waste liquid discharging pipeline 18 and is used for collecting waste acid liquid discharged by cleaning and filtering; the bottoms of the No. 1 filter element cleaning waste liquid discharge pipeline 17 and the No. 2 filter element cleaning waste liquid discharge pipeline 18 are respectively provided with a No. 1 filter cleaning control valve 5 and a No. 2 filter cleaning control valve 6 which are used for selectively cleaning the corresponding filter elements; the liquid level detector 11 is arranged in the waste acid liquid collecting tank 8; one side of the waste acid liquid collecting tank 8 is connected with the waste acid storage tank 14 through a pipeline, and an acid liquid recovery pump 13 and an acid liquid recovery control valve 12 are sequentially arranged on the pipeline between the waste acid collecting tank 8 and the waste acid storage tank 14 and are used for conveying the acid liquid in the waste acid liquid collecting tank 8 into the waste acid storage tank 14 for production of an acid regeneration room; the waste acid liquid collecting tank 8 is of a funnel-shaped structure, and the bottom end of the waste acid liquid collecting tank 8 is provided with an impurity discharge valve 9 for discharging impurities deposited in the waste acid liquid collecting tank 8; a sewage tank 10 is provided below the impurity discharging valve 9 for discharging waste acid and wastewater.
A liquid level controller 15 is arranged between the liquid level detector 11 and the acid liquor recovery control valve 12 and between the liquid level detector 11 and the acid liquor recovery pump 13, and is used for receiving signals of the liquid level detector 11 so as to control the start and stop of the acid liquor recovery pump 13 and the acid liquor recovery control valve 12.
The application method of the utility model is as follows:
start-up mode
A load starting mode; starting cleaning according to the load current of the acid liquor circulating pump motor, wherein the current is overlarge, which indicates that a filter element of the filter is blocked; when the load current of the circulating pump motor exceeds 80%, the filter cleaning is started.
A pressure start mode; when the pressure of the acid liquor circulation loop exceeds 0.5Mpa, the filter is started to be cleaned.
Time-start mode. When the unit operates for 5 to 10 working days, the filter is started to be cleaned.
Filtering mode
Opening an acid inlet control valve 3 of the No. 1 filter, an acid inlet control valve 4 of the No. 2 filter and an acid outlet control valve 7 of the acid liquor; closing the No. 1 filter cleaning control valve 5, the No. 2 filter cleaning control valve 6 and the acid liquor recovery control valve 12; starting an acid liquor circulating pump (refer to figure 1); the acid liquor enters the filter core 1 of the filter through the acid inlet control valve 3 of the filter 1# and enters the filter box 16 through the filter screen of the filter core 1# and the impurities are attached to the inner wall of the filter screen of the filter core 1 #; the acid liquor enters the interior 2 of the filter 2# filter element through the 2# filter acid inlet control valve 4, the acid liquor enters the filter box 16 through the filter screen 2 of the filter 2# filter element, and impurities are attached to the inner wall of the filter screen 2 of the filter 2# filter element; the filtered acid liquor in the filter box 16 flows out into the pickling tank through the acid liquor outlet control valve 7.
Cleaning mode
Cleaning of 1# filter element 1: the acid inlet control valve 3 of the No. 1 filter, the cleaning control valve 6 of the No. 2 filter and the acid liquor recovery control valve 12 are closed; the acid inlet control valve 4 of the No. 2 filter, the cleaning control valve 5 of the No. 1 filter and the acid outlet control valve 7 of the acid liquid are opened; the acid liquor enters the filter 2# filter element 2 through the 2# filter acid inlet control valve 4, the acid liquor enters the filter box 16 through the filter screen of the 2# filter element 2, and impurities are attached to the inner wall of the filter screen of the 2# filter element 2; the acid liquor in the filter box 16 flows out through the control valve 7 and enters the pickling tank. Because of the pressure in the filter box 16, the acid liquor in the filter box 16 enters the filter element filter screen from the outside of the filter element 1 filter screen, the acid liquor washes out impurities attached to the inner wall of the filter screen, the impurities enter the waste acid liquor collecting tank 8 along with the acid liquor through the filter cleaning control valve 5 1, and after 10 seconds, about 50-60 liters of cleaning waste acid liquor enters the waste acid liquor collecting tank 8, and the cleaning of the filter element 1 is completed.
Cleaning a No. 2 filter element 2: the acid inlet control valve 4 of the No. 2 filter, the cleaning control valve 5 of the No. 1 filter and the acid liquor recovery control valve 12 are closed; the acid inlet control valve 3 of the No. 1 filter, the cleaning control valve 6 of the No. 2 filter and the acid outlet control valve 7 of the No. 2 filter are opened; the acid liquor enters the filter 1# filter element 1 through the 1# filter acid inlet control valve 3, the acid liquor enters the filter box 16 through the filter screen 1 of the filter 1# filter element, and impurities are attached to the inner wall of the filter screen 1 of the filter 1# filter element; the acid liquor outlet control valve 7 in the filter box 16 flows out into the pickling tank. Because of the pressure in the filter box 16, the acid liquor in the filter box 16 enters the filter element filter screen from the outside of the No. 2 filter element 2 filter screen, the acid liquor washes out impurities attached to the inner wall of the filter screen, the impurities enter the waste acid liquor collecting tank 8 along with the acid liquor through the No. 2 filter cleaning control valve 6, and after 10 seconds, about 50-60 liters of cleaning waste acid liquor enters the waste acid liquor collecting tank 8, and the cleaning of the No. 2 filter element 2 is completed.
Recovery of cleaning waste acid liquid
The interval period for cleaning the filter element is generally more than 5 days, so that the acid liquid in the waste acid liquid collecting tank 8 is in a static state in a normal state, and the deposition of impurities in the acid liquid is facilitated.
The bottom of the waste acid liquid collecting tank 8 is conical, which is favorable for depositing, concentrating and discharging impurities in the acid liquid.
The waste acid liquid discharged by one-time cleaning of the filter element is about 100-120 liters, and the starting frequency of the acid liquid recovery pump 13 is relatively low, so that the static deposition of the acid liquid in the waste acid liquid collecting tank 8 is facilitated; when the liquid level in the waste acid collecting tank 8 reaches 85%, the acid recovery control valve 12 is opened, the acid recovery pump 13 is started, the acid purified by deposition at the upper part of the waste acid collecting tank 8 starts to be conveyed into the waste acid storage tank 14 between acid regenerations, when the liquid level in the waste acid collecting tank 8 is reduced to 40%, the acid recovery pump 13 is stopped, the acid recovery control valve 12 is closed, and the waste acid recovery is finished.
Discharge of impurities
About 100 to 150 working days, discharging impurities once; the impurity discharging valve 9 is opened for about half a minute, and impurities are discharged into the sump 10 through the impurity discharging valve 9 with a small amount of acid liquid.
The utility model is not fully described in detail in the prior art.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.
Claims (6)
1. A cleaning structure of an acid cleaning filter comprises a filter box body, a filter element, an acid inlet pipeline, an acid inlet control valve and an acid outlet control valve; the filter elements are respectively arranged in the filter box body; the acid liquor outlet control valve is arranged at the upper part of one side of the filter box body; the method is characterized in that: the inlet end of the filter element is connected with a waste acid liquid collecting component through a cleaning waste liquid discharge pipeline, and the waste acid liquid collecting component is connected to the tail end of the cleaning waste liquid discharge pipeline; the acid inlet pipeline is connected between the acid inlet and the middle upper region of the cleaning waste liquid discharge pipeline; the acid inlet control valve is arranged on the acid inlet pipeline.
2. A cleaning structure for an acid cleaning filter according to claim 1, characterized in that: the waste acid liquid collecting assembly comprises a cleaning control valve, a waste acid liquid collecting tank, a liquid level detector, an acid liquid recovery control valve, an acid liquid recovery pump and a waste acid storage tank; the waste acid liquid collecting tank is arranged at the tail end of the cleaning waste liquid discharging pipeline, and a cleaning control valve is arranged at the bottom of the cleaning waste liquid discharging pipeline; the liquid level detector is arranged inside the waste acid liquid collecting tank; one side of the waste acid liquid collecting tank is connected with the waste acid storage tank through a pipeline, and an acid liquid recovery pump and an acid liquid recovery control valve are sequentially arranged on the pipeline.
3. A cleaning structure for an acid cleaning filter according to claim 2, characterized in that: the bottom of the waste acid liquid collecting tank is provided with an impurity discharge valve.
4. A cleaning structure for an acid cleaning filter according to claim 3, characterized in that: a sewage tank is arranged below the waste acid liquid collecting tank.
5. A cleaning structure for an acid cleaning filter according to claim 2, characterized in that: a liquid level controller is arranged between the liquid level detector and the acid liquor recovery control valve and between the liquid level detector and the acid liquor recovery pump.
6. A cleaning structure for an acid cleaning filter according to claim 1, characterized in that: the acid inlet is provided with a pressure detection controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321304113.1U CN220003235U (en) | 2023-05-26 | 2023-05-26 | Cleaning structure of pickling filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321304113.1U CN220003235U (en) | 2023-05-26 | 2023-05-26 | Cleaning structure of pickling filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220003235U true CN220003235U (en) | 2023-11-14 |
Family
ID=88686984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321304113.1U Active CN220003235U (en) | 2023-05-26 | 2023-05-26 | Cleaning structure of pickling filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220003235U (en) |
-
2023
- 2023-05-26 CN CN202321304113.1U patent/CN220003235U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |