CN114011809B - Cleaning system and cleaning method for flotation column spray gun - Google Patents
Cleaning system and cleaning method for flotation column spray gun Download PDFInfo
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- CN114011809B CN114011809B CN202111202912.3A CN202111202912A CN114011809B CN 114011809 B CN114011809 B CN 114011809B CN 202111202912 A CN202111202912 A CN 202111202912A CN 114011809 B CN114011809 B CN 114011809B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention belongs to the technical field of flotation, and particularly relates to a cleaning system and a cleaning method for a spray gun of a flotation column. The cleaning system comprises a liquid storage tank for storing cleaning liquid and a flushing tank communicated with the liquid storage tank, wherein the flushing tank is provided with a pressurizing device, a liquid outlet of the flushing tank is connected with a spray gun leather hose, the spray gun leather hose is connected with a flotation column spray gun, and the flotation column spray gun can be inserted into the liquid storage tank in a pluggable manner so as to facilitate recycling of the cleaning liquid; the cleaning solution comprises alkali cleaning solution and pickling solution, wherein the alkali cleaning solution comprises sodium hydroxide and sodium carbonate according to the mass ratio of 4:1, preparing a 20% solute mass water solution; the pickling solution is EDTA disodium, hydrochloric acid and oxalic acid according to the mass ratio of 10:2:1, 5% solute mass water solution. The cleaning system can clean the inside of the spray gun of the flotation column rapidly and conveniently, dredge the spray gun nozzle, reduce calcium formation in the spray gun and prolong the service life of the spray gun.
Description
Technical Field
The invention belongs to the technical field of cleaning of flotation column spray guns, and particularly relates to a cleaning system for a flotation column spray gun and a cleaning method using the system.
Background
The flotation column belongs to simple aerated flotation equipment and has remarkable advantages in the aspect of treating micro-fine mineral. The general structure of the flotation column is a column body, no mechanical stirring device is arranged in the column body, and a spray gun for dispersing and inflating the column body to generate flotation bubbles is arranged at the bottom of the column body. The performance and working condition of the spray gun greatly influence the sorting effect of the flotation column.
Currently, there are many methods for controlling the flow of liquid. Flotation column lances are most widely used in the type of arrangement outside the flotation column, including swirl type lances, steam-water mixing type lances, etc. The steam-water mixing type spray gun is characterized in that air is dissolved in high-pressure water, and is injected into a flotation column from a spray gun nozzle, so that the problem of blockage is generally avoided. However, in the partial copper-sulfur separation process, a large amount of lime is needed to be added in the process, the pH value of the generated backwater is higher, the water used by the spray gun is acidic water, and SO in the water 4 2- 、Ca 2+ 、Fe 2+ The plasma content is higher, and the inside of the spray gun is easy to be calcium-binding in the use process, and the main components of the calcareous are impurities such as calcium carbonate, calcium sulfate, ferric hydroxide and the like. When the impurity content in the spray gun is more, not only can influence the result of use of spray gun, serious still can block up the spray gun nozzle, make the spray gun damage, both influence normal ore dressing production, cause the rising of ore dressing cost again.
Disclosure of Invention
In order to solve the problems in the prior art, one of the purposes of the invention is to provide a cleaning system for a spray gun of a flotation column, which can quickly and conveniently clean the interior of the spray gun, dredge the spray gun nozzle and reduce calcium accumulation in the spray gun.
The invention adopts the technical scheme that:
the cleaning system for the flotation column spray gun comprises a liquid storage tank for storing cleaning liquid and a flushing tank communicated with the liquid storage tank, wherein the flushing tank is provided with a pressurizing device, a liquid outlet of the flushing tank is connected with a spray gun leather hose, the spray gun leather hose is connected with the flotation column spray gun, and the flotation column spray gun can be inserted into the liquid storage tank in a pluggable manner so as to facilitate recycling of the cleaning liquid;
the cleaning solution comprises alkali cleaning solution and pickling solution, wherein the alkali cleaning solution comprises sodium hydroxide and sodium carbonate according to the mass ratio of 4:1, preparing a 20% solute mass water solution; the pickling solution is EDTA disodium, hydrochloric acid and oxalic acid according to the mass ratio of 10:2:1 into a 5% solute mass aqueous solution.
Preferably, a heating device is arranged in the liquid storage tank, and the heating device heats the cleaning liquid to 38-42 ℃.
Preferably, the pressurizing device comprises an air pressurizing valve and an evacuating valve which are arranged on the flushing tank, a feeding valve is arranged between the flushing tank and the liquid storage tank, a hand valve is arranged between the flushing tank and the spray gun leather hose, the flushing tank forms a closed space through closing of the feeding valve and the evacuating valve, and a high-pressure environment is formed by the air pressurizing valve, so that the cleaning liquid is pressed to enter the spray gun leather hose through the hand valve; the bottom of the flushing tank is also provided with a liquid discharge valve.
Preferably, the outside of the flushing tank is annularly provided with an annular pipe communicated with the flushing tank, the annular pipe is provided with at least one hand valve, and each hand valve is connected with a spray gun leather pipe for simultaneously cleaning a plurality of flotation spray guns.
Preferably, the flushing tank is further provided with a pressure gauge for measuring the internal pressure of the flushing tank; and the spray gun leather tube is provided with a flowmeter for measuring the flow rate of the cleaning fluid.
Preferably, at least one liquid storage tank is arranged; when the number of the liquid storage tanks is 1, different types of cleaning liquid are sequentially placed in the liquid storage tanks according to the cleaning sequence; when the number of the liquid storage tanks is greater than 1, the liquid storage tanks are connected in parallel, and the liquid storage tanks connected in parallel are respectively filled with the required cleaning liquid and are communicated with the same flushing tank.
Preferably, 2 liquid storage tanks are arranged.
Another object of the present invention is to provide a method for cleaning a spray gun using the cleaning system as described above, comprising the following steps:
s1, respectively placing alkaline washing liquid and pickling liquid into a liquid storage tank, heating to corresponding temperatures, connecting a flotation column spray gun to be cleaned with a spray gun leather hose, and inserting the flotation column spray gun on the wall of the alkaline washing liquid storage tank; closing the pressurizing valve, the hand valve and the liquid discharge valve, and opening a first feed valve and an exhaust valve between the alkaline washing liquid storage tank and the hand valve of the flushing tank to enable alkaline washing liquid to flow into the flushing tank;
s2, closing the first feeding valve and the exhaust valve, opening the pressurizing valve and the hand valve, enabling alkaline washing liquid to enter a spray gun leather pipe through the hand valve to wash the flotation column spray gun until the alkaline washing liquid flowing out of the flotation column spray gun is not discolored any more, closing the pressurizing valve and the hand valve, opening the exhaust valve and the liquid discharge valve, and evacuating alkaline washing liquid in the flushing tank;
the alkaline washing aims to convert the indissolvable calcium sulfate in the spray gun into relatively soluble calcium carbonate and calcium hydroxide, and the reaction process is as follows:
CaSO 4 +2NaOH＝Ca(OH) 2 +Na 2 SO 4
CaSO 4 +NaCO 3 ＝CaCO 3 +Na 2 SO 4
s3, after draining, closing a drain valve, and opening a second feed valve between the pickling solution storage tank and the flushing tank to enable pickling solution to flow into the flushing tank;
s4, closing the second feeding valve and the exhaust valve, opening the pressurizing valve and the hand valve, enabling the pickling solution to enter the spray gun leather pipe through the hand valve to wash the flotation column spray gun until the pickling solution flowing out of the flotation column spray gun is not discolored, closing the pressurizing valve, and opening the exhaust valve and the liquid discharge valve to empty the pickling solution in the flushing tank, thereby completing the cleaning.
The purpose of acid washing is to remove impurities such as calcium carbonate, calcium hydroxide, ferric hydroxide, manganese hydroxide and the like, and the reaction process is as follows:
Ca(OH) 2 +2HCl＝CaCl 2 +H 2 O
CaCO 3 +2HCl＝CaCl 2 +H 2 O+CO 2
Fe(OH) 2 +2HCl＝FeCl 2 +H 2 O
Fe(OH) 3 +3HCl＝FeCl 3 +H 2 O
Mn(OH) 2 +2HCl＝MnCl 2 +H 2 O。
preferably, the pressure in the flushing tank is kept between 0.45 and 0.65MPa, and the flow rate of the cleaning liquid is between 0.5 and 0.9L/min during cleaning.
Preferably, after the step S4, the alkaline washing liquid and the pickling liquid can be continuously used for carrying out circulating washing for a plurality of times, and a clear water washing step is added between each circulating washing or after the last washing
The invention has the beneficial effects that:
according to the invention, the pressure in the tank is increased by introducing gas into the flushing tank, so that the cleaning liquid is driven to enter the leather tube of the spray gun and finally sprayed out of the spray gun, and the high-pressure water flow is used for flushing the interior of the spray gun, so that the settled impurity layer can be promoted to be stripped and fall off, and the cleaning speed of the spray gun is accelerated.
The cleaning liquid after cleaning in the invention directly flows into the liquid storage tank for storing the cleaning liquid, so that the cleaning space can be saved, the recovered cleaning liquid can be selected to continue to carry out the second cleaning or be used as waste liquid treatment according to the cleaning condition, and the recovery rate of the cleaning liquid in the process is high, so that the pollution problems such as leakage and the like can not be caused in the cleaning process.
The cleaning state of the spray gun can be more intuitively judged by arranging the pressure gauge and the flowmeter. In the initial stage of cleaning the spray gun, the spray gun contains more impurities such as calcium carbonate, calcium sulfate, ferric hydroxide and the like, the resistance of the cleaning liquid is larger, and the flow rate of the cleaning liquid is smaller, so that the cleaning liquid needs higher pressure to wash the interior of the spray gun. At this point the pressure reading of the pressure gauge should be high, greater than 0.65MPa, while the reading of the flow meter is low, less than 0.5L/min. When the reading of the pressure gauge is lower than 0.45MPa and the reading of the flow meter is higher than 1L/min, the spray gun is cleaned.
According to the invention, firstly, indissolvable calcium sulfate in the spray gun is converted into relatively soluble calcium carbonate and calcium hydroxide by alkali washing, and then, impurities such as calcium carbonate, calcium hydroxide, ferric hydroxide, manganese hydroxide and the like are removed by acid washing, so that a better cleaning effect can be achieved on the spray gun for copper-sulfur separation. Meanwhile, the selected alkali washing and pickling solution components can not damage the spray gun body, and compared with the traditional pickling, the service life of the spray gun can be prolonged.
The pickling solution adopts EDTA disodium, hydrochloric acid and oxalic acid according to the mass ratio of 10:2:1 is prepared into a 5% solute mass water solution, and EDTA disodium has good complexation effect on various metal ions. Hydrochloric acid and oxalic acid can dissolve insoluble precipitate, improve the acidic environment for cleaning, and improve the solubility and complexation ability of EDTA disodium.
Drawings
FIG. 1 is a schematic diagram of the structure of the present cleaning system;
fig. 2 is a schematic structural view of the present invention provided with two liquid storage tanks.
The meaning of the reference symbols in the figures is as follows:
10-liquid storage tank 11-heating device 12-feeding valve
121-first feed valve 122-second feed valve
20-flushing tank 21-air pressurization valve 22-exhaust valve 23-hand valve 24-drain valve
30-spray gun leather tube 40-spray gun 50-annular tube
61-pressure gauge 62-flowmeter
Detailed Description
The technical scheme of the present invention is described below in conjunction with the drawings and embodiments of the specification so as to be understood by those skilled in the art.
Example 1
As shown in fig. 1, a cleaning system for a flotation column spray gun comprises a liquid storage tank for storing cleaning liquid and a flushing tank 20 communicated with the liquid storage tank 10, wherein the flushing tank 20 is provided with a pressurizing device, a liquid outlet of the flushing tank 20 is connected with a spray gun leather hose 30 through a hand valve 23, a spray gun leather hose 31 is used for quickly and conveniently connecting the flotation column spray gun 40, and the flotation column spray gun 40 can be inserted into the liquid storage tank 10 in a pluggable manner so as to facilitate recycling of the cleaning liquid.
In this embodiment, the flotation column spray gun 40 is removably mounted to the tank wall of the liquid storage tank 10, so long as the cleaning liquid is allowed to flow into the cleaning tank 10.
The hand valve 23 is provided with a control switch, which can be independently controlled to be opened, and further, the hand valve 23 can also adjust the flow of the cleaning liquid of the connected spray gun leather hose 30.
The inside of the liquid storage tank 10 is provided with a heating device 11, and the heating device 11 heats the cleaning liquid contained in the liquid storage tank 10 to a proper temperature, so that the cleaning effect is improved.
The pressurizing device in the flushing tank 20 comprises an air pressurizing valve 21 and an exhaust valve 22 which are arranged on the flushing tank 20, a feed valve 12 is arranged between the flushing tank 20 and the liquid storage tank 10, the flushing tank 20 forms a closed space through the closing of the feed valve 12 and the exhaust valve 22, compressed air is introduced into the flushing tank 20 by the air pressurizing valve 21 to form a high-pressure environment, and the cleaning liquid is pressed into the spray gun leather hose 30 through a hand valve 23; the bottom of the rinse tank 20 is also provided with a drain valve 24.
The flushing tank 20 is also provided with a pressure gauge 61 for measuring the pressure inside the flushing tank 20; a flow meter 62 is provided on the gun bellows 30 for measuring the flow rate of the cleaning fluid.
Further, an annular pipe 50 communicated with the flushing tank 20 is arranged on the outer side of the flushing tank 20 in a surrounding mode, at least one hand valve 23 is arranged on the annular pipe 50, and each hand valve 23 is connected with one spray gun leather hose 30 for cleaning a plurality of flotation column spray guns 40 simultaneously.
The liquid reservoir 10 may be provided in plurality according to the type of cleaning liquid and the cleaning process. When the number of the liquid storage tanks 10 is greater than 1, the liquid storage tanks 10 are connected in parallel, and the liquid storage tanks 10 connected in parallel are respectively placed into the required cleaning liquid and are communicated with the same flushing tank 20. When the number of the liquid storage tanks 10 is 1, the cleaning liquid may be sequentially put into the liquid storage tanks 10 in the cleaning order when different kinds of cleaning liquids are used.
Example 2
As shown in fig. 2, in this embodiment, the cleaning solution includes an alkaline cleaning solution and an acid cleaning solution, wherein the alkaline cleaning solution is sodium hydroxide and sodium carbonate according to a mass ratio of 4:1, preparing a 20% solute mass water solution; the pickling solution is EDTA disodium, hydrochloric acid and oxalic acid according to the mass ratio of 10:2:1 into a 5% solute mass aqueous solution.
The number of the liquid storage tanks 10 is 2, and the alkaline washing liquid and the acid washing liquid are respectively filled in the two liquid storage tanks 10, and are respectively communicated with the flushing tank 20 through the first feeding valve 121 and the second feeding valve 122.
The complete cleaning process is as follows:
s1, respectively placing alkaline washing liquid and pickling liquid into a liquid storage tank 10, heating to 38-42 ℃, connecting a flotation column spray gun to be cleaned with a spray gun leather pipe 30, and inserting a flotation column spray gun 40 on the wall of the alkaline washing liquid storage tank; closing the pressurizing valve 21, the hand valve 23 and the drain valve 24, and opening the first feed valve 121 and the exhaust valve 22 between the alkaline wash liquid storage tank and the wash tank hand valve 20 to allow alkaline wash liquid to flow into the wash tank; the whole process is about 10min;
s2, closing the first feeding valve 121 and the exhaust valve 22, opening the pressurizing valve 21 and the hand valve 23, enabling alkaline washing liquid to enter the spray gun leather hose 30 through the hand valve 23 to wash the flotation column spray gun 40 until the alkaline washing liquid flowing out of the flotation column spray gun 40 is not discolored any more, closing the pressurizing valve 21 and the hand valve 23, opening the exhaust valve 22 and the exhaust valve 24, and evacuating the alkaline washing liquid in the flushing tank 20;
s3, after draining, closing a drain valve 24, and opening a second feed valve 122 between the pickling solution storage tank and the flushing tank to enable pickling solution to flow into the flushing tank;
s4, closing the second feeding valve 122 and the exhaust valve 22, opening the pressurizing valve 21 and the hand valve 23, enabling the pickling solution to enter the spray gun leather hose 30 through the hand valve 23 to flush the flotation column spray gun 40, closing the pressurizing valve 21 after the pickling solution flowing out of the flotation column spray gun 40 is not discolored, and opening the exhaust valve 22 and the liquid discharge valve 24 to empty the pickling solution in the flushing tank, thus completing the cleaning.
In the above cleaning process, the specific flushing time may be determined according to the number of the flotation column spray guns 40 that are simultaneously flushed, and the opening and closing of the flushing are controlled, for example, the duration of a single flushing is set to be 2 min. During the flushing process, the pressure in the flushing tank 20 is kept at 0.45-0.65MPa, and the flow rate of the cleaning liquid is between 0.5-0.9L/min.
For partial cleaning, after a period of cleaning in steps S2 and S4, the cleaning liquid flowing out of the column spray gun 40 is clear, i.e. the cleaning is completed.
After step S4, the alkaline washing liquid and the pickling liquid can be continuously used for a plurality of times of circulating washing, so that the cleaning is more in place. The step of washing with clean water can be selected between each cycle of washing or after the last washing, and the clean water can be contained in the liquid storage tank 10, and the washing can be performed by referring to the same method using the cleaning liquid.
The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The cleaning system for the flotation column spray gun is characterized by comprising a liquid storage tank (10) for storing cleaning liquid and a flushing tank (20) communicated with the liquid storage tank (10), wherein the flushing tank (20) is provided with a pressurizing device, a liquid outlet of the flushing tank (20) is connected with a spray gun leather hose (30), the spray gun leather hose (30) is connected with a flotation column spray gun (40), and the flotation column spray gun (40) can be inserted into the liquid storage tank (10) in a pluggable manner so as to facilitate recycling of the cleaning liquid;
the cleaning solution comprises alkali cleaning solution and pickling solution, wherein the alkali cleaning solution comprises sodium hydroxide and sodium carbonate according to the mass ratio of 4:1, preparing a 20% solute mass water solution; the pickling solution is EDTA disodium, hydrochloric acid and oxalic acid according to the mass ratio of 10:2:1 a 5% solute mass aqueous solution configured;
a heating device (11) is arranged in the liquid storage tank (10), and the heating device (11) heats the cleaning liquid to 38-42 ℃;
the pressurizing device comprises an air pressurizing valve (21) and an exhaust valve (22) which are arranged on a flushing tank (20), a feeding valve (12) is arranged between the flushing tank (20) and the liquid storage tank (10), a hand valve (23) is arranged between the flushing tank and the spray gun leather hose (30), the flushing tank (20) forms a closed space through closing of the feeding valve (12) and the exhaust valve (22), and a high-pressure environment is formed by the air pressurizing valve (21), so that the cleaning liquid is pressed to enter the spray gun leather hose (30) through the hand valve (23); a drain valve (24) is also arranged at the bottom of the flushing tank (20);
an annular pipe (50) communicated with the flushing tank (20) is arranged on the outer side of the flushing tank (20) in a surrounding mode, at least one hand valve (23) is arranged on the annular pipe (50), and each hand valve (23) is connected with a spray gun leather hose (30) for simultaneously cleaning at least one flotation column spray gun (40);
2 liquid storage tanks (10) are arranged, two liquid storage tanks (10) are connected in parallel, and the two liquid storage tanks (10) connected in parallel are respectively filled with alkali washing liquid and pickling liquid and are communicated with the same flushing tank (20);
the method for cleaning the spray gun by the cleaning system comprises the following steps:
s1, respectively placing alkaline washing liquid and pickling liquid into a liquid storage tank (10) and heating to corresponding temperatures, connecting a flotation column spray gun (40) to be cleaned with a spray gun leather hose (30), and inserting the flotation column spray gun (40) on the wall of the alkaline washing liquid storage tank; closing the pressurizing valve (21), the hand valve (23) and the drain valve (24), and opening the first feed valve (121) and the exhaust valve (22) between the alkaline washing liquid storage tank and the flushing tank to enable the alkaline washing liquid to flow into the flushing tank;
s2, closing a first feeding valve (121) and an exhaust valve (22), opening a pressurizing valve (21) and a hand valve (23), enabling alkaline washing liquid to enter a spray gun leather hose (30) through the hand valve (23) to wash a flotation column spray gun (40), closing the pressurizing valve (21) and the hand valve (23) until the alkaline washing liquid flowing out of the flotation column spray gun (40) is not discolored, opening the exhaust valve (22) and a liquid discharge valve (24), and emptying the alkaline washing liquid in a flushing tank (20);
s3, after liquid is discharged, a liquid discharge valve (24) is closed, and a second feed valve (122) between the pickling liquid storage tank and the flushing tank is opened, so that the pickling liquid flows into the flushing tank;
s4, closing the second feeding valve (122) and the exhaust valve (22), opening the pressurizing valve (21) and the hand valve (23), enabling the pickling solution to enter the spray gun leather hose (30) through the hand valve (23) to flush the flotation column spray gun (40), closing the pressurizing valve (21) until the pickling solution flowing out of the flotation column spray gun (40) is not discolored, and opening the exhaust valve (22) and the liquid discharge valve (24) to empty the pickling solution in the flushing tank, thereby completing the cleaning.
2. A cleaning system for a flotation column spray gun according to claim 1, characterized in that the flushing tank (20) is further provided with a pressure gauge (61) for measuring the pressure inside the flushing tank (20); a flowmeter (62) is arranged on the spray gun leather hose (30) and is used for measuring the flow rate of the cleaning fluid.
3. A cleaning system for a flotation column spray gun according to claim 1, characterized in that the pressure in the flushing tank (20) is maintained between 0.45 and 0.65MPa and the flow rate of the cleaning liquid is between 0.5 and 0.9L/min during cleaning.
4. A cleaning system for a flotation column spray gun according to claim 1, characterized in that after step S4, the cycle cleaning is continued several times with alkaline and pickling solutions, and a clean water rinse step is added between each cycle cleaning or after the last cleaning.
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| CN202111202912.3A CN114011809B (en) | 2021-10-15 | 2021-10-15 | Cleaning system and cleaning method for flotation column spray gun |
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| CN202111202912.3A CN114011809B (en) | 2021-10-15 | 2021-10-15 | Cleaning system and cleaning method for flotation column spray gun |
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| CN114011809B true CN114011809B (en) | 2023-07-14 |
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| CN204934099U (en) * | 2015-09-02 | 2016-01-06 | 闵建平 | From reverse-flow type automatic washing station |
| CN107059371B (en) * | 2017-05-16 | 2019-10-25 | 苏州海歌电器科技有限公司 | Convenient for the burner cap of hanged ironing machine and its cleaning method of cleaning |
| CN210788354U (en) * | 2019-08-23 | 2020-06-19 | 天津市绿洲汽车修理有限公司 | Spray gun cleaning device |
| CN210816432U (en) * | 2019-09-04 | 2020-06-23 | 天津市绿洲汽车修理有限公司 | Spray gun cleaning machine capable of automatically filling cleaning agent |
| CN111014198A (en) * | 2019-12-31 | 2020-04-17 | 武汉湾流科技股份有限公司 | Automatic spray gun cleaning device and cleaning method |
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