CN211999930U - Stainless steel storage tank and spherical tank cleaning system - Google Patents
Stainless steel storage tank and spherical tank cleaning system Download PDFInfo
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- CN211999930U CN211999930U CN202020625534.4U CN202020625534U CN211999930U CN 211999930 U CN211999930 U CN 211999930U CN 202020625534 U CN202020625534 U CN 202020625534U CN 211999930 U CN211999930 U CN 211999930U
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Abstract
The utility model provides a stainless steel storage tank, spherical tank cleaning system, the system includes circulation acid tank, first circulating pump, second circulating pump, cleaner accumulator, compressed air device and interim chemical cleaning subsystem, the circulation acid tank passes through the input that first pump inlet valve connects second pump inlet valve and third pump inlet valve respectively, the exit end of first circulating pump connects pump outlet main valve through first pump outlet valve, the exit end of second circulating pump passes through second pump outlet valve and connects pump outlet main valve, pump outlet main valve connects the feed liquor end of interim chemical cleaning subsystem. Compared with the prior art, the utility model discloses can carry out chemical cleaning to stainless steel storage tank, spherical tank under energy-conserving, environmental protection, simple condition, the cleaning time limit for a project is short, wash thoroughly, practice thrift the energy consumption, can be very big satisfy the huge stainless steel storage tank of growing large-scale spherical tank and medical enterprise quantity, storage tank chemical cleaning demand.
Description
Technical Field
The utility model relates to a petrochemical, fine chemistry industry, pharmaceutical production, food production field stainless steel storage tank, spherical tank wash safety control technical field, in particular to stainless steel storage tank, spherical tank cleaning system.
Background
In order to meet the increasingly strict environmental-protection discharge standard, more and more new or device reconstruction in the fields of petrochemical industry, fine chemical industry, medicine production and food production equipment are carried out, and devices of the production process of stainless steel pipelines, stainless steel storage tanks, storage tanks and spherical tanks are adopted to ensure the safety and sanitation of products; according to the standards of stainless steel pickling and passivation Standard SJ20893-2003 of Ministry of industry and informatization, chemical cleaning quality Standard of Industrial Equipment HG/T2387-2007 of Ministry of industry and informatization, and chemical cleaning construction and acceptance Standard of petrochemical industry and pipelines SH/T3547-2011 of Ministry of industry and informatization, newly-built chemical industry equipment needs to be chemically cleaned and passivated before being put into production. Practice proves that chemical cleaning and passivation before starting the automobile have important significance on production safety and economic benefit. The economic benefits that result are enormous.
1. The purpose of cleaning and passivating before driving is as follows:
rolling skin is formed when equipment raw materials of a steel pipe, a steel plate, stainless steel and the like of the system are rolled; rust, welding slag and oily antirust agent coated on steel for corrosion prevention can be formed in the manufacturing, storage, transportation and installation processes of equipment, and impurities such as dust, sand, cement, heat-insulating materials and the like can also be mixed into the equipment. As the time required for the steel pipe and the steel plate to leave the factory, manufacture, storage and transportation and be installed on the final production becomes longer along with the increase of the capacity of the equipment, the welding openings of the equipment are increased, the heating surface is enlarged, and the total amount of various impurities such as rolled skin, rust, welding slag, antirust agent, silt and the like is increased. After cleaning, a layer of compact chemical passivation film is formed on the clean metal surface, and the passivation film can effectively prevent dirt from being generated again and can effectively protect equipment. The equipment is protected from corrosion or other chemical damage. The safety of the equipment can be effectively ensured, and the service life of the equipment can be prolonged. The chemical cleaning passivation before the start of the vehicle mainly comprises the following points:
1) the smooth driving is ensured, and the product is qualified at one time;
2) normal production is maintained, and the service life of equipment is prolonged;
3) the production capacity is improved, and the product quality is ensured;
4) energy consumption is reduced, and production cost is reduced;
5) production accidents are reduced, and production safety is guaranteed;
6) improving the appearance of the equipment and purifying the environment.
2. The chemical cleaning meaning before the start is to the chemical plant, in the production process, relate to multiple raw materials to use the catalyst. The purity of some raw materials and catalysts is extremely high, so that the cleanliness of decorative equipment and pipelines in the production process is extremely high, and any impurity intervention causes catalyst poisoning and side reaction until the whole process is damaged. In addition, the precision requirements of certain equipment and accessories in the device are high, and the device is sensitive to the destructive effect of impurities. Therefore, any impurity is introduced, and the quality of the precision part is possibly damaged, so that the normal production is influenced. For example, a polymerizer of a polyvinyl chloride plant, a hydrogen production plant, and the like are hearts of the apparatus. The equipment has high requirements on pipelines. Both minute metal particles and impurities may damage the precision parts thereof. With adverse consequences. Any new device inevitably produces rolling scale, oil stain, silt, welding slag, dust, various oxides and other dirt during the manufacturing, transportation, storage and installation processes. The dirt has to damage the production quality of the reactor, so the cleaning is needed before the equipment is started to remove the dirt, so that the equipment can ensure the safety of the equipment and the quality of products.
The existing cleaning method of the conventional stainless steel storage tank, storage tank and spherical tank comprises the following steps:
the first method comprises the following steps: smearing and cleaning stainless steel pickling passivation paste:
in the process of equipment installation, the welding seam is smeared and cleaned by stainless steel pickling passivation paste, and the method has the defects that firstly, the cleaning is not thorough, other parts except the welding seam can be cleaned only by adopting a smearing mode, and the cleaning effect is poor; secondly, the construction period is long, smearing and cleaning are needed each time the welding is carried out to a certain degree, 1-2 days are needed after pickling passivation paste is smeared, and if the cleaning effect is not good, smearing and cleaning are needed repeatedly, so that the installation period is prolonged;
the second method comprises the following steps: the large-scale cleaning device is circularly cleaned by spraying through a conventional process, namely: oil removal, acid washing, rinsing and passivation;
take a storage tank, a storage tank and a spherical tank with the cleaning volume of 1000m3 as an example:
1) the cleaning equipment is large in installation workload and long in time, after the equipment is installed, a fixed large-flow circulating cleaning device is installed, the flow of a circulating pump is larger than 100m3/h, the diameter of a temporary pipeline is larger than DN100mm, the installation workload is large, the time of 5-7 days is required for the installation of a general cleaning device, the cleaning time is 4-5 days, and the time of about 9-12 days is required for cleaning a storage tank, a storage tank and a spherical tank of 1000m 3;
2) the public condition requirement is high: the cleaning of storage tanks, storage tanks and spherical tanks with the volume of more than 1000m3 needs:
(1) the power supply is more than or equal to 45KW.h, the cleaning time of the conventional cleaning method is about 24h, and the power consumption is as follows: 45KW.h multiplied by 24h is 1080 KW;
(2) water: the supply amount of the required water consumption is more than 50t/h calculated according to the 10 percent of the reserved amount of the cleaning cycle;
(3) the water consumption is big just to have continued that the washing medicament quantity of use is big, and it is big to wash waste liquid volume, according to (2) water consumption: the cleaning agent needs about 5 tons according to the storage amount of 100 tons and 5 percent of water, 100 tons of water is multiplied by 5 times, and the waste liquid amount is about 500 tons;
in conclusion, the conventional cleaning method has the disadvantages of long cleaning period, incomplete cleaning, and huge consumption of water, electric energy and cleaning agent, and is difficult to meet the requirement of chemical cleaning of large spherical tanks (for example, 3 x 4000m3) and stainless steel storage tanks and storage tanks with huge number in pharmaceutical enterprises in the market.
SUMMERY OF THE UTILITY MODEL
To prior art defect above, the utility model provides a stainless steel storage tank, spherical tank cleaning system as follows:
the technical scheme of the utility model is realized like this:
the utility model provides a stainless steel storage tank, spherical tank cleaning system, the system includes circulation acid tank, first circulating pump, second circulating pump, cleaner accumulator, compressed air device and interim chemical cleaning subsystem, circulation acid tank connects the input of second pump inlet valve and third pump inlet valve respectively through first pump inlet valve, and the output of second pump inlet valve and third pump inlet valve corresponds the entrance point of connecting first circulating pump, second circulating pump respectively, the exit end of first circulating pump passes through first pump outlet valve and connects pump outlet main valve, the exit end of second circulating pump passes through second pump outlet valve and connects pump outlet main valve, pump outlet main valve exit end is provided with the manometer, pump outlet main valve connects the inlet end of interim chemical cleaning subsystem, the compressed air device corresponds through first compressed air valve, second compressed air valve respectively and connects first circulating pump, And the cleaning agent recovery tank is connected with the liquid inlet end of the temporary chemical cleaning subsystem through a cleaning agent recovery valve.
Preferably, interim chemical cleaning subsystem is including setting up the spray set in the jar internal, spray set passes through interim pipe connection pump outlet main valve, spray set includes five 180 rotating spray nozzles, and wherein, three set up jar internal upper portion, and two set up jar internal lower part, be provided with light trap, liquid measurement hole, manhole door and material export on the jar body.
Preferably, a filter is arranged in the circulating acid tank, the filter is connected with an inlet valve of the first pump, and a circulating cleaning valve, an overflow valve, a softened water inlet and a cleaning agent inlet are respectively arranged on a tank body of the circulating acid tank.
A cleaning process method of a stainless steel storage tank and a spherical tank comprises the following steps;
s1, installing a cleaning system: installing a circulating spray device and a temporary pipeline in the tank body in series to form a temporary chemical cleaning subsystem with a circulating loop;
s2, washing system hydrostatic test: after the temporary pipeline is installed, a hydraulic test with the working pressure of 0.5-0.8 MPa is carried out for 10-20 min, and the leakage condition is detected; ensuring that the test run of the chemical cleaning circulation subsystem is not abnormal, and simultaneously adjusting the spraying angle, the flow rate and the flow velocity of the sprayed liquid for the spraying devices in the storage tank and the spherical tank to ensure that no dead angle is left in the storage tank and the spherical tank;
s3, acid washing and passivation: after the hydrostatic test, debugging and water washing of the system are finished, MZ-001 three-in-one pickling passivation solution is injected into a circulating acid tank according to the amount of a base liquid of the circulating acid tank, and MZ-001 three-in-one cleaning agent in the circulating acid tank is injected into a storage tank and a spherical tank by using a first circulating pump, a compressed air device and a connected temporary pipeline so as to remove grease and oxide scales on the surfaces of the tank and the tank; stopping the pump to check the cleaning effect of the inner surface of the tank when cleaning is carried out for 1-2 h, and finishing pickling passivation when the inner surface of the tank is clean and has no trace;
s4 and MZ-001 three-in-one acid washing passivation solution recovery: discharging MZ-001 three-in-one pickling and passivating solution into a cleaning agent recovery tank after the pickling and passivating are finished;
s5, neutralizing waste liquid: after pickling, adding alkali liquor into a circulating acid tank to perform neutralization reaction on residual MZ-001 three-in-one pickling passivation solution discharged from a storage tank and a ball tank until the pH value of the pickling solution in the circulating acid tank is 6-9, and controlling the pickling solution to flow into a first-party waste liquor neutralization tank;
s6 open type circulating water flushing: after the neutralization of the MZ-001 three-in-one pickling passivation solution is finished, softened water is filled in a circulating acid tank, and softened water is injected into the inner walls of a storage tank and a spherical tank by a first circulating pump to wash residual pickling solution at the cleaned part; and (4) washing the cleaned part for multiple times by using softened water until the pH value of the softened water discharged into the circulating acid tank is 7.0-7.5, and then finishing the water washing process.
Preferably, a filter screen is arranged at the inlet of the first circulating pump in the circulating acid tank, and a pressure gauge and a sampler are arranged on a connecting pipeline of the outlet of the first circulating pump.
Preferably, the MZ-001 three-in-one acid cleaning passivation solution is prepared according to the following formula in percentage by weight: MZ-001 three-in-one pickling passivation solution: 99.75 percent; corrosion inhibitor Lan-826: 0.25.
preferably, the pickling passivation is carried out for 2-3 hours.
Preferably, in the step S3, the pickling process needs to test the acidity of the pickling passivation solution in the circulating acid tank, and the test frequency of the acidity is 1-2 times/30 min.
Preferably, the stored water in the tank body needs to be tested for appearance, turbidity and pH in the process of flushing the softened water in the steps S5 and S6; the frequency of testing the appearance, turbidity and pH was 1 time/20 min.
Preferably, before the pipeline system is subjected to the hydrostatic test in step S2, the parts which are not allowed to participate in the chemical cleaning in the cleaned part need to be removed, and the positions of the removed parts are processed by taking the isolation measures of a temporary short pipe or a temporary bypass, wherein the temporary pipe or the temporary bypass is used for connecting the chemical cleaning subsystem, closing and isolating the valve which is not related to the temporary chemical cleaning subsystem and adding a blind plate.
Compared with the prior art, the utility model discloses there is following beneficial effect:
the utility model discloses a stainless steel storage tank, spherical tank cleaning system and cleaning process method, the utility model discloses can carry out chemical cleaning to stainless steel storage tank, spherical tank under energy-conserving, environmental protection, simple circumstances, it is short to wash the time limit for a project, wash thoroughly, practice thrift the energy consumption (reduce the quantity of water, vapour, electricity), not only guaranteed stainless steel storage tank, spherical tank and carried out abluent normal and safety, can also save a large amount of chemical cleaning liquid, also can receive the waste liquid of emission, reduce the waste liquid pollution, can very big satisfy the huge stainless steel storage tank of growing large-scale spherical tank (for example size: 3 x 4000m3) and medical enterprise quantity, storage tank chemical cleaning demand.
Drawings
FIG. 1 is a system design diagram of a cleaning system for stainless steel storage tanks and spherical tanks according to the present invention;
fig. 2 is a flow chart of the cleaning process of the stainless steel storage tank and the spherical tank of the present invention.
In the figure: the system comprises a circulating acid tank 1, a filter 110, a circulating cleaning valve 111, an overflow valve 112, a softened water inlet 113, a cleaning agent inlet 114, a first circulating pump 2, a second circulating pump 3, a cleaning agent recovery tank 4, a compressed air device 5, a temporary chemical cleaning subsystem 6, a spraying device 610, a temporary pipeline 611, a rotary nozzle 612, a light transmission hole 613, a liquid measuring hole 614, a manhole door 615, a material outlet 616, a first pump inlet valve 7, a second pump inlet valve 8, a third pump inlet valve 9, a pump outlet main valve 10, a pressure gauge 11, a first compressed air valve 12, a second compressed air valve 13, a cleaning agent recovery valve 14, a first pump outlet valve 15, a second pump outlet valve 16 and a first-side waste liquid neutralization pond 17.
Detailed Description
The present invention will be described more fully and clearly with reference to the accompanying drawings, which are incorporated in and constitute a part of this specification.
As shown in fig. 1, the cleaning system for stainless steel storage tank and spherical tank of the present invention comprises a circulating acid tank 1, a first circulating pump 2, a second circulating pump 3, a cleaning agent recycling tank 4, a compressed air device 5 and a temporary chemical cleaning subsystem 6, wherein the circulating acid tank 1 is connected with the input ends of a second pump inlet valve 8 and a third pump inlet valve 9 through a first pump inlet valve 7, the output ends of the second pump inlet valve 8 and the third pump inlet valve 9 are correspondingly connected with the inlet ends of the first circulating pump 2 and the second circulating pump 3 respectively, the outlet end of the first circulating pump 2 is connected with a pump outlet main valve 10 through a first pump outlet valve 15, the outlet end of the second circulating pump 3 is connected with a pump outlet main valve 10 through a second pump outlet valve 16, the outlet end of the pump outlet main valve 10 is provided with a pressure gauge 11, the pump outlet main valve 10 is connected with the inlet end of the temporary chemical cleaning subsystem 6, the compressed air device 5 is correspondingly connected with the first circulating pump 2 and the second circulating pump 3 through a first compressed air valve 12 and a second compressed air valve 13 respectively, and the cleaning agent recovery tank 4 is connected with the liquid inlet end of the temporary chemical cleaning subsystem 6 through a cleaning agent recovery valve 14; the temporary chemical cleaning subsystem 6 comprises a spraying device 610 arranged in a tank body, the spraying device 610 is connected with an outlet main valve 10 through a temporary pipeline 611, the spraying device 610 comprises five 180-degree rotary nozzles 612, wherein three of the rotary nozzles are arranged at the upper part in the tank body, two of the rotary nozzles are arranged at the lower part in the tank body, the rotary nozzles 612 can also be arranged according to the size and shape of the tank body in a matching manner so as to ensure that the cleaning agent is sprayed without dead angle, and the tank body is provided with a light transmission hole 613, a liquid measuring hole 614, a manhole door 615 and a material outlet 616; the inside of the circulating acid tank 1 is provided with a filter 110, the filter 110 is connected with the first pump inlet valve 7, and the tank body of the circulating acid tank 1 is respectively provided with a circulating cleaning valve 111, an overflow valve 112, a softened water inlet 113 and a cleaning agent inlet 114.
As shown in FIG. 2, the cleaning system provides a cleaning process method for a stainless steel storage tank and a spherical tank, which comprises the following steps;
s1, installing a cleaning system: installing a circulating spray device and a temporary pipeline in the tank body in series to form a temporary chemical cleaning subsystem with a circulating loop, wherein the temporary chemical cleaning subsystem can be matched and arranged according to the shape and the size of the tank body;
s2, washing system hydrostatic test: after the temporary pipeline is installed, a hydraulic test with the working pressure of 0.5-0.8 MPa is carried out for 10-20 min, and the leakage condition is detected; ensuring that the test run of the chemical cleaning circulation subsystem is not abnormal, and simultaneously adjusting the spraying angle, the flow rate and the flow velocity of the sprayed liquid for the spraying devices in the storage tank and the spherical tank to ensure that no dead angle is left in the storage tank and the spherical tank;
s3, acid washing and passivation: after the hydrostatic test, debugging and water washing of the system are finished, MZ-001 three-in-one pickling passivation solution is injected into a circulating acid tank according to the amount of a base liquid of the circulating acid tank, and MZ-001 three-in-one cleaning agent in the circulating acid tank is injected into a storage tank and a spherical tank by using a first circulating pump, a compressed air device and a connected temporary pipeline so as to remove grease and oxide scales on the surfaces of the tank and the tank; stopping the pump to check the cleaning effect of the inner surface of the tank when cleaning is carried out for 1-2 h, and finishing pickling passivation when the inner surface of the tank is clean and has no trace;
s4 and MZ-001 three-in-one acid washing passivation solution recovery: discharging MZ-001 three-in-one pickling and passivating solution into a cleaning agent recovery tank after the pickling and passivating are finished;
s5, neutralizing waste liquid: after pickling, adding alkali liquor into a circulating acid tank to perform neutralization reaction on residual MZ-001 three-in-one pickling passivation solution discharged from a storage tank and a ball tank until the pH value of the pickling solution in the circulating acid tank is 6-9, and controlling the pickling solution to flow into a first-party waste liquid neutralization tank 17;
s6 open type circulating water flushing: after the neutralization of the MZ-001 three-in-one pickling passivation solution is finished, softened water is filled in a circulating acid tank, and softened water is injected into the inner walls of a storage tank and a spherical tank by a first circulating pump to wash residual pickling solution at the cleaned part; and (4) washing the cleaned part for multiple times by using softened water until the pH value of the softened water discharged into the circulating acid tank is 7.0-7.5, and then finishing the water washing process.
In the steps, a filter screen is arranged at the inlet of a first circulating pump in a circulating acid box and used for filtering large-size impurities in the MZ-001 three-in-one acid washing passivation solution, and a pressure gauge and a sampler are arranged on a connecting pipeline of the outlet of the first circulating pump and used for monitoring the passivation liquid pressure and other indexes in real time; the MZ-001 three-in-one acid-washing passivation solution is prepared according to the following formula in percentage by weight: MZ-001 three-in-one pickling passivation solution: 99.75 percent; corrosion inhibitor Lan-826: 0.25; the pickling passivation is carried out for 2-3 hours; in the step S3, the acid pickling process needs to test the acidity of the pickling passivation solution in the circulating acid tank, wherein the test frequency of the acidity is 1-2 times/30 min; in the steps S5 and S6, the stored water in the tank body needs to be tested for appearance, turbidity and pH in the process of flushing the softened water; the testing frequency of the appearance, the turbidity and the pH is 1 time/20 min, the quality and the progress of the washing process can be directly known through testing the performance of the water stored in the circulating acid tank, if the appearance and the turbidity value of the water stored in the circulating acid tank are still changed continuously along with the increase of the washing frequency, the pH value is lower, the situation that the washing is insufficient is shown, and the washing needs to be carried out again; if the appearance and turbidity value of the water stored in the circulating acid tank are not changed along with the increase of the washing times, the PH value tends to be stable, and the washing is basically finished; s1, installing a cleaning system, and replacing a power supply with 50m3/h compressed air when cleaning a stainless steel storage tank, a storage tank and a spherical tank which are less than or equal to 1000m3 by chemical cleaning, so that the power consumption cost in the cleaning process is greatly reduced, and the potential safety hazard in the cleaning process is greatly reduced; before the hydraulic pressure test of the pipeline system in the step S2, parts which are not allowed to participate in chemical cleaning in the cleaned part need to be removed, and the positions of the removed parts are processed by adopting an isolation measure of a temporary short pipe or a temporary bypass, wherein the temporary pipe or the temporary bypass is used for connecting into the chemical cleaning subsystem, closing and isolating a valve which is not related to the temporary chemical cleaning subsystem, and additionally arranging a blind plate. The blind plate can block and plug irrelevant valves and system components, so that the blind plate is isolated from the temporary chemical cleaning system to prevent cleaning liquid from leaking, the disassembled and assembled equipment and the disassembled and assembled position in the cleaned part are hung with the brand, and the disassembled equipment accessories are independently treated as required to be installed and reset after being cleaned.
The cleaning system is adopted for cleaning 1000m3 stainless steel storage tanks, storage tanks and spherical tanks as an example:
1) the installation time of the cleaning base station is greatly shortened: the installation time of the stainless steel storage tank, the storage tank and the base station of the spherical tank is 1.5-2 days;
2) reduction of utility resource usage:
(1) a power supply: 50m3/h air compressor and lighting power supply; electricity consumption for conventional cleaning: about 5 percent;
(2) the water consumption in the whole cleaning process is as follows: 50 t; the water consumption for conventional cleaning: about 10 percent;
(3) the dosage of the cleaning agent is as follows: 1.5-2 t of MZ-001 three-in-one acid-washing passivation solution; the dosage of the conventional cleaning agent is as follows: 35-40%;
(4) amount of waste liquid: about 50t (including flush water); the amount of the conventional cleaning waste liquid is about 10 percent.
Synthesize the utility model discloses a system and process flow can know, the utility model discloses a stainless steel storage tank, spherical tank cleaning system and washing process method, the utility model discloses can carry out chemical cleaning to stainless steel storage tank, spherical tank under energy-conserving, environmental protection, simple circumstances, wash the time limit for a project short, wash thoroughly, practice thrift the energy consumption (reducing the quantity of water, vapour, electricity), not only guaranteed that stainless steel storage tank, spherical tank carry out abluent normal and safety, can also save a large amount of chemical cleaning liquid, also can receive the waste liquid of emission, reduce waste liquid pollution, can be very big satisfy the huge stainless steel storage tank of growing large-scale spherical tank (for example size: 3 x 4000m3) and medical enterprise quantity, storage tank chemical cleaning demand.
Claims (3)
1. The utility model provides a stainless steel storage tank, spherical tank cleaning system, a serial communication port, the system is including circulation acid tank, first circulating pump, second circulating pump, cleaner accumulator, compressed air device and interim chemical cleaning subsystem, circulation acid tank connects the input of second pump inlet valve and third pump inlet valve respectively through first pump inlet valve, and the output of second pump inlet valve and third pump inlet valve corresponds the entrance point of connecting first circulating pump, second circulating pump respectively, the exit end of first circulating pump passes through first pump outlet valve and connects pump outlet main valve, the exit end of second circulating pump passes through second pump outlet valve and connects pump outlet main valve, pump outlet main valve exit end is provided with the manometer, pump outlet main valve connects the feed liquor end of interim chemical cleaning subsystem, the compressed air device is respectively through first compressed air valve, The second compressed air valve is correspondingly connected with the first circulating pump and the second circulating pump, and the cleaning agent recovery tank is connected with the liquid inlet end of the temporary chemical cleaning subsystem through the cleaning agent recovery valve.
2. The stainless steel storage tank and spherical tank cleaning system according to claim 1, wherein the temporary chemical cleaning subsystem comprises a spray device arranged in the tank body, the spray device is connected with a pump outlet main valve through a temporary pipeline, the spray device comprises five 180-degree rotary nozzles, three of the spray devices are arranged at the upper part in the tank body, two of the spray devices are arranged at the lower part in the tank body, and the tank body is provided with a light hole, a liquid measuring hole, a manhole door and a material outlet.
3. The stainless steel storage tank and spherical tank cleaning system according to claim 1, wherein a filter is arranged inside the circulating acid tank, the filter is connected with the first pump inlet valve, and a circulating cleaning valve, an overflow valve, a softened water inlet and a cleaning agent inlet are respectively arranged on the tank body of the circulating acid tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020625534.4U CN211999930U (en) | 2020-04-23 | 2020-04-23 | Stainless steel storage tank and spherical tank cleaning system |
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| CN202020625534.4U CN211999930U (en) | 2020-04-23 | 2020-04-23 | Stainless steel storage tank and spherical tank cleaning system |
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