CN219333465U - Regeneration pretreatment system for solvent type paint cleaning waste organic solvent - Google Patents
Regeneration pretreatment system for solvent type paint cleaning waste organic solvent Download PDFInfo
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- CN219333465U CN219333465U CN202320234177.2U CN202320234177U CN219333465U CN 219333465 U CN219333465 U CN 219333465U CN 202320234177 U CN202320234177 U CN 202320234177U CN 219333465 U CN219333465 U CN 219333465U
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Abstract
The utility model belongs to the technical field of coating construction and coating manufacturing and recycling raw materials, in particular to a regeneration pretreatment system for solvent type coating cleaning waste organic solvent, which comprises a raw material tank, a working tank, a solution tank and an ultrafiltration membrane, wherein the raw material tank is communicated to the working tank through a first pipeline, the working tank is communicated to the ultrafiltration membrane through a second pipeline, a circulating pump is arranged on the second pipeline, the output end of the ultrafiltration membrane is respectively communicated to the working tank and the solution tank through a third pipeline and a fourth pipeline, a first conveying pump and a plurality of filters which are connected in series and used for primary filtration are arranged on the first pipeline, the filters comprise a basket, a filter bag or/and a filter core, and impurities such as waste residues or large-particle wastes in the solvent type coating cleaning waste organic solvent are primarily filtered through the basket, the filter bag or the filter core, so that a foundation is laid for separating the clear solution through the ultrafiltration membrane later, the working period of the ultrafiltration membrane is longer, and the filtration efficiency of the ultrafiltration membrane is ensured.
Description
Technical Field
The utility model belongs to the technical field of coating construction and raw material recovery in coating manufacturing, and particularly relates to a regeneration pretreatment system for solvent-type coating cleaning waste organic solvents.
Background
In the current coating field, solvent type paint is still used, especially in the automotive coating field, solvent type finishing varnish cannot be replaced by water paint all the time, and a large amount of organic solvent is required to be used for process cleaning for cleaning spraying equipment and a paint delivery and mixing system, so that a large amount of organic solvent is required to be consumed in the coating process, a large amount of waste solvent after cleaning is generated, and a large amount of dangerous waste is caused.
At present, waste paint slag generated by coating is treated as dangerous waste, so that the cost of harmless treatment is high, and the environment is polluted. In order to separate and regenerate acceptable good solvent (membrane separation or distillation) from the spent solvent, the spent solvent needs to be cleaned by solvent-based coating materials before the process is performed, and the organic solvent is filtered out by a solvent regeneration pretreatment process to ensure that the subsequent process produces acceptable regenerated solvent product.
Among the prior art, chinese patent document with publication No. CN212915189U describes a solvent type coating washs waste solvent recovery unit, including the head tank, the head tank has precision filter through first pipe connection, one side that the head tank was kept away from to the compact filter is equipped with the ultrafiltrate fluid reservoir, connect through the second pipeline between ultrafiltrate fluid reservoir and the head tank, the ultrafiltrate fluid reservoir has the input of circulating pump through the third pipe connection, the output of circulating pump is connected with the clear solution jar through the fourth pipe connection, connect through the fifth pipe between ultrafiltrate fluid reservoir and the clear solution jar, in the in-service use, this system still has following not enough: because the raw materials are collected from the job site and then have impurities, the raw materials are not primarily filtered, so that the service cycle of the precision filter and the ultrafiltration liquid tank is shorter, and the filtering efficiency is affected.
Disclosure of Invention
The utility model aims to provide a regeneration pretreatment system for a solvent-type coating cleaning waste organic solvent, which solves the technical problems that in the working process of waste recovery equipment of the solvent-type coating in the prior art, the filtering effect is poor, the filtering components such as an ultrafiltration membrane are easy to block, and the service cycle is short.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a solvent type coating washs useless organic solvent regeneration pretreatment systems, including head tank, working tank, solution jar, milipore filter, the head tank is through first pipeline intercommunication to the working tank, the working tank is through second pipeline intercommunication to the milipore filter, be equipped with the circulating pump on the second pipeline, the output of milipore filter is respectively through third pipeline and fourth pipeline intercommunication to working tank and solution jar, be equipped with the valve on first pipeline, second pipeline, third pipeline, the fourth pipeline respectively still be equipped with first delivery pump and a plurality of series connection, be used for the filter of just straining on the first pipeline, the filter includes basket, filter bag or/and filter core.
Preferably, a first tee is arranged at the rear end of the first delivery pump on the first pipeline, and one output interface of the first tee is communicated with the raw material tank through a fifth pipeline.
Preferably, the device further comprises a cleaning tank, wherein the clear liquid tank is communicated to the cleaning tank through a sixth pipeline, a valve and a second conveying pump are arranged on the sixth pipeline, the cleaning tank is communicated to the input end of the circulating pump through a seventh pipeline, and the valve is arranged on the seventh pipeline.
Preferably, the first transfer pump and the second transfer pump are pneumatic diaphragm pumps.
Preferably, the working tank is also communicated with an eighth pipeline, and the eighth pipeline is provided with a valve and a third delivery pump; the working tank is provided with a liquid level meter, and the third pipeline is provided with a flowmeter.
Preferably, the material tank and the working tank are respectively provided with an explosion-proof stirrer.
Preferably, a pressure gauge is provided on the first conduit before the filter.
Preferably, a pressure gauge is provided on the second pipe at the rear side of the circulation pump.
Preferably, the raw material tank, the working tank, the clean liquid tank and the cleaning tank are all provided with liquid level meters.
Preferably, a heat exchanger is further arranged on the third pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
1. this regeneration pretreatment system of solvent type coating washs useless organic solvent is equipped with first delivery pump and a plurality of series connection on the first pipeline that the head tank led to the working tank, be used for the filter of prefiltering, the filter includes basket, filter bag or/and filter core, carry out preliminary filtration through basket, filter bag or filter core with impurity such as waste residue or large granule waste in the solvent type coating washs useless organic solvent, for follow-up separation clear liquid through the milipore filter has laid the basis for the duty cycle of milipore filter at the back is longer, ensures the filtration efficiency of milipore filter simultaneously.
2. The regeneration pretreatment system for the solvent-type coating cleaning waste organic solvent is provided with a cleaning tank, wherein a clear liquid tank is communicated to the cleaning tank through a sixth pipeline, a valve and a second conveying pump are arranged on the sixth pipeline, and the cleaning tank is communicated to the input end of a circulating pump through a seventh pipeline, so that clear liquid in the clear liquid tank can be conveyed to the cleaning tank, and an ultrafiltration membrane is cleaned by starting the circulating pump, so that the filtration efficiency of the ultrafiltration membrane is ensured.
3. This regeneration pretreatment systems of solvent-based coating washs useless organic solvent is equipped with parts such as a plurality of pipelines and delivery pump, valve each other at head tank, working tank, wash jar, clear solution jar for during operation is more nimble, for example, the accessible fifth pipeline circulates and just strains, exports concentrate through eighth pipeline, flows back the washing liquid to the wash jar through ninth pipeline.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of one embodiment of a solvent-based coating cleaning waste organic solvent regeneration pretreatment system of the present utility model.
In the drawings, each reference numeral is intended to:
1.1-a raw material tank; 1.2-working tank; 1.3-a clear liquid tank; 1.4-a cleaning tank;
2.1-an explosion-proof stirrer; 2.2-explosion-proof stirrer;
3.1-a first transfer pump; 3.2-a circulation pump; 3.3-a second transfer pump; 3.4-a third transfer pump;
4.1-level gauge; 4.2-level gauge; 4.3-level gauge; 4.4-level gauge;
5.1-a filter; 5.2-filter; 5.3-filter; 5.4-filter; 5.5 ultrafiltration membrane;
6.1-6.15-stop valve;
7.1-a first three-way valve; 7.2-a second three-way valve; 7.3-a third three-way valve; 8.1-an electric regulating valve; 8.2-an electrically controlled valve; 8.3-an electrically controlled valve; 9-a heat exchanger; 10.1-pneumatic control valve; 10.2-pneumatic control valve; 10.3-pneumatic control valve;
PG-pressure gauge; FE-flow meter; FI-float flow meter;
(1) -a first conduit; (2) -a second conduit; (3) -a third conduit; (4) -a fourth conduit; (5) -a fifth conduit; (6) -a sixth conduit; (7) -a seventh conduit; (8) -an eighth conduit; (9) -a ninth conduit.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In one embodiment, a solvent-based paint cleaning waste organic solvent regeneration pretreatment system is provided, as shown in fig. 1, the solvent-based paint cleaning waste organic solvent regeneration pretreatment system comprises a raw material tank 1.1, a working tank 1.2, a clear liquid tank 1.3 and an ultrafiltration membrane 5.5, wherein the raw material tank 1.1 is a tank for storing solvent-based paint cleaning waste organic solvent, the raw material tank 1.1 is communicated with the working tank 1.2 through a first pipeline (1), and the first pipeline (1) is a pipeline for conveying raw materials in the raw material tank 1.1 into the working tank 1.2; the working tank 1.2 is used for storing a tank for primarily filtering a solvent type coating cleaning waste organic solvent, meanwhile, the working tank 1.2 participates in the circulating filtration of the ultrafiltration membrane 5.5, the working tank 1.2 is communicated to the ultrafiltration membrane 5.5 through a second pipeline (2), a circulating pump 3.2 is arranged on the second pipeline (2), the circulating pump 3.2 is an explosion-proof high-pressure pump, the output end of the ultrafiltration membrane 5.5 is communicated to the working tank 1.2 and a clear liquid tank 1.3 through a third pipeline (3) and a fourth pipeline (4) respectively, valves are respectively arranged on the first pipeline (1), the second pipeline (2), the third pipeline (3) and the fourth pipeline (4), after the circulating pump 3.2 is started, liquid in the working tank 1.2 can be pumped to the ultrafiltration membrane 5.5 for circulating filtration, the clear liquid is used for storing the cleaning liquid separated after the ultrafiltration membrane 5.5.5 is filtered, the solvent is discharged from the ultrafiltration membrane 1.5 through the ultrafiltration membrane, the solvent is concentrated solution in the residual solvent type solvent is discharged from the ultrafiltration membrane 1.5, and the solvent is filtered by the solvent is discharged from the solvent type filter tank.
As shown in fig. 1, a first delivery pump 3.1 is further arranged on the first pipeline (1), the first delivery pump 3.1 is a pneumatic diaphragm pump, the pneumatic diaphragm pump is suitable for pumping thick, volatile and inflammable liquid such as paint, four filters which are connected in series and used for primary filtration are further arranged on the first pipeline (1), the filters comprise a filter 5.1, a filter 5.2, a filter 5.3 and a filter 5.4, wherein the filter 5.1 is a basket type filter, the filter 5.2, the filter 5.3 and the filter 5.4 can adopt filter bags or filter cores respectively, and waste residues or large-particle wastes in the solvent type paint cleaning waste organic solvent are subjected to primary filtration through the basket, the filter bags or the filter cores, so that the working period of the following ultrafiltration membrane 5.5 is longer, and the filtration efficiency of the ultrafiltration membrane 5.5 is ensured.
Further, as shown in fig. 1, in one embodiment, the solvent type paint cleaning waste organic solvent regeneration pretreatment system is provided with explosion-proof stirrers EM in a raw material tank 1.1 and a working tank 1.2, namely an explosion-proof stirrer 2.1 and an explosion-proof stirrer 2.2 respectively, and in the working process, liquid materials in the raw material tank 1.1 and the working tank 1.2 are stirred to be always in a circulating state, so that the liquid materials are ensured to flow, and components such as pigment in the liquid materials cannot be caused to precipitate.
Further, as shown in fig. 1, in one embodiment, in the solvent type paint cleaning waste organic solvent regeneration pretreatment system, a first tee joint 7.1 is arranged at the rear end of a first conveying pump 3.1 on a first pipeline (1), one output interface of the first tee joint 7.1 is communicated with a raw material tank 1.1 through a fifth pipeline (5), so that raw materials in the raw material tank 1.1 can be circularly filtered through a filter 5.1 by controlling the first tee joint 7.1, and the primary filtering effect is improved.
Further, as shown in fig. 1, in one embodiment, the regeneration pretreatment system for cleaning waste organic solvent by using solvent type coating further comprises a cleaning tank 1.4, the cleaning tank 1.3 is communicated to the cleaning tank 1.4 through a sixth pipeline (6), a valve and a second delivery pump 3.3 are arranged on the sixth pipeline (6), the second delivery pump 3.3 is a pneumatic diaphragm pump, the second delivery pump 3.3 is started, after the valve on the sixth pipeline (6) is opened, clear liquid in the cleaning tank 1.3 can be conveyed to the cleaning tank 1.4, the input end of the circulating pump 3.2 on the seventh pipeline (7) is provided with a second tee joint 7.2, the cleaning tank 1.4 is communicated to the second tee joint 7.2 through the seventh pipeline (7), the seventh pipeline (7) is provided with a valve 6.15, the third tee joint 7.3 is arranged on the third pipeline (3), one of the ports of the third tee joint 7.3 is communicated to the cleaning tank 4.4 through a ninth pipeline (9), the valve 6.15 is opened, the third tee joint 7.3.5.5 is adjusted, and the circulating pump 3.5.5 is communicated to the ultrafiltration membrane through the circulating pump 3.5, and the ultrafiltration membrane can be cleaned through the circulating pump 4.5.5, and the reflux membrane is enabled to be communicated to the circulating pump 4.5.5.
Further, as shown in fig. 1, in one embodiment, the working tank 1.2 of the solvent-type paint cleaning waste organic solvent regeneration pretreatment system is further communicated with an eighth pipeline (8), a valve 6.9 and a third delivery pump 3.4 are arranged on the eighth pipeline (8), the third delivery pump 3.4 is a pneumatic diaphragm pump, a liquid level meter 4.2 is arranged on the working tank 1.2, a flow meter FE is arranged on the third pipeline (3), the flow meter FE is a kepler ultrasonic flow meter, the condition of liquid in the working tank 1.2 is judged through the flow meter FE and the liquid level meter 4.2, if the flow of the flow meter FE is slow or the liquid level meter 4.2 reaches a certain low level value, the concentration of the liquid in the working tank 1.2 is required to be eliminated, at the moment, the valve 6.9 is opened, the third delivery pump 3.4 is started, the concentrated waste liquid in the working tank 1.2 is discharged to the transport bucket 11, and the subsequent raw materials are filtered after the working tank 1.2 is emptied.
Further, as shown in fig. 1, in one embodiment, the regeneration pretreatment system for the solvent-type coating cleaning waste organic solvent is provided with a pressure gauge between adjacent filters on the first pipeline (1), specifically, the front sides of the filters 5.2, 5.3 and 5.4 are respectively provided with a pressure gauge PG, the pressure gauge PG is a mechanical pressure gauge, and the condition of blocking inside the filters 5.2, 5.3 and 5.4 can be judged by the condition of the pressure gauge PG so as to be convenient for cleaning or replacement in time.
Further, as shown in fig. 1, in one embodiment, the regeneration pretreatment system for the solvent-type coating cleaning waste organic solvent is provided with a pressure gauge PG on the second pipeline (2) at the rear side of the circulating pump 3.2, and the output pressure of the circulating pump 3.2 can be read and the blocking condition of the ultrafiltration membrane 5.5 can be judged by the pressure gauge PG on the second pipeline (2) so as to clean the ultrafiltration membrane 5.5 in time.
Further, as shown in fig. 1, in one embodiment, the solvent type paint cleaning waste organic solvent regeneration pretreatment system is provided with a liquid level meter 4.1, a liquid level meter 4.3 and a liquid level meter 4.4 on a raw material tank 1.1, a clear liquid tank 1.3 and a cleaning tank 1.4 respectively, and the liquid levels in the raw material tank 1.1, the clear liquid tank 1.3 and the cleaning tank 1.4 are observed through the liquid level meter 4.1, the liquid level meter 4.3 and the liquid level meter 4.4.
Further, as shown in fig. 1, in one embodiment, the solvent-type paint cleaning waste organic solvent regeneration pretreatment system is further provided with a heat exchanger 9 on the third pipeline (3), the temperature of the liquid output through the ultrafiltration membrane 5.5 is increased, and the temperature of the circulating filtrate is reduced through the heat exchanger 9.
As shown in fig. 1, in one embodiment, the solvent-based paint cleaning waste organic solvent regeneration pretreatment system specifically works as follows:
(1) Feeding:
through the level gauge 4.1 observation on the head tank 1.1, ensure that the jar is in the work liquid level scope, explosion-proof agitator 2.1 is in the open mode, is equipped with stop valve 6.2 on first pipeline (1), and stop valve 6.2 is in normally closed state, and stop valve 6.2 is in abnormal state only, uses when wasing the emission. The first pipeline (1) is also provided with a stop valve 6.1, a stop valve 6.3, a stop valve 6.4, a stop valve 6.5, a stop valve 6.6, a stop valve 6.7 and a stop valve 6.8, wherein the filter 5.1 is a basket type filter, the filter 5.2, the filter 5.3 and the filter 5.4 are filter bags or filter core type filters, a pressure drainage valve connected with the first delivery pump 3.1 is closed, the pneumatic control valve 10.1 is started, the first delivery pump 3.1 is started, and the first delivery pump 3.1 is always in an operating state. When feeding the working tank 1.2, the first three-way valve 7.1 switches corresponding pipeline communication, the feed liquid is conveyed to the working tank 1.2 through a pressure gauge PG on the front side of the observation filter 5.2, the filter 5.3 and the filter 5.4, the liquid pressure on the first pipeline (1) is controlled within a process range, when the working tank 1.2 is at a full liquid level and the working liquid does not need to be injected, the first three-way valve 7.1 switches to the fifth pipeline (5) to be communicated to the raw material tank 1.1, and the raw material liquid is in a circulating filtration state.
(2) Separation and purification of clear liquid by ultrafiltration membrane 5.5
Observing the liquid level meter 4.2 on the working tank 1.2, when the working liquid level is reached, the explosion-proof stirrer 2.2 is in an open state, the valve 6.9 is in a closed state, and the second pipeline (2) and the fourth pipeline (4) are provided with a stop valve 6.10, a stop valve 6.11, a stop valve 6.12 and a stop valve 6.13 which are all in an open state; the second three-way valve 7.2 is adjusted in place, so that the third pipeline (3) is conducted, the ninth pipeline (9) is disconnected, the circulating pump 3.2 is started, and the working fluid in the working tank 1.2 is subjected to circulating filtration. An electric control valve 8.1 is arranged on the third pipeline (3) and positioned in front of the second three-way valve 7.2, and in the filtering process, the electric control valve 8.1 is automatically opened and is opened to the minimum value; the circulating pump 3.2 is an electric high-pressure pump, can be gradually pressurized under the regulation of a frequency converter, a float flowmeter FI is arranged on the fourth pipeline (4), the flow of the float flowmeter FI is observed, and when the outflow of clear liquid output from the ultrafiltration membrane 5.5 reaches satisfactory flow, the pressure of the circulating pump 3.2 is not regulated; the concentrated solution flowing out of the ultrafiltration membrane 5.5 is subjected to refrigeration temperature regulation through the heat exchanger 9, the concentrated solution returns to the working tank 1.2 after passing through the flowmeter FE, clear solution separated from the ultrafiltration membrane 5.5 enters the clear solution tank 1.3 through the float flowmeter FI and the stop valve 6.13, the clean solution is continuously extracted to enter the clear solution tank 1.3 in the running process of the system, and the working solution in the working tank 1.2 is continuously concentrated.
(3) Waste solvent concentrate discharge stage
Determining the concentration of the concentrated solution in the working tank 1.2 according to the technological parameters of the pressure gauge PG, the flowmeter FE and the float flowmeter FI at the rear side of the circulating pump 3.2, stopping the circulating pump 3.2 when the concentrated solution is required to be discharged after reaching the technological specified value, manually closing the stop valve 6.10, opening the stop valve 6.9, controlling the third conveying pump 3.4 to be opened through the pneumatic valve 10.3, pumping the concentrated solution into the conveying bucket 11, closing the third conveying pump 3.4 after the working tank 1.2 is emptied, closing the stop valve 6.9, and opening the stop valve 6.10.
(4) Ultrafiltration membrane 5.5 cleaning stage
When the outflow amount of the cleaning liquid from the ultrafiltration membrane 5.5 is attenuated, the ultrafiltration membrane 5.5 needs to be cleaned. The valve arranged on the sixth pipeline (6) comprises a stop valve 6.14 and an electric control valve 8.2, before the ultrafiltration membrane 5.5 is cleaned, cleaning liquid in the clear liquid tank 1.3 passes through the opened stop valve 6.14, the electric control valve 8.2 is opened, the pneumatic valve 10.2 is opened to start the second delivery pump 3.3, the liquid level is observed through a liquid level meter 4.4 arranged on the cleaning tank 1.4, the pneumatic valve 10.2 is closed after the cleaning liquid is injected into the cleaning tank 1.4 to reach the full working liquid level, the second delivery pump 3.3 stops running, and the electric control valve 8.2 is closed.
The stop valve 6.15 on the seventh pipeline (7) is in a normally open state, the second three-way valve 7.2 is replaced by a mode that the waste liquid flows into the circulating pump 3.2 from the cleaning tank 1.4, the third three-way valve 7.3 is switched to a mode that the waste liquid flows into the cleaning tank 1.4 from the ultrafiltration membrane 5.5 through the ninth pipeline (9), the waste liquid flows into the cleaning tank 1.2 from the ultrafiltration membrane 5.5 after the cleaning of the circulating pump 3.2 is started for 10 minutes, the waste liquid is stored into the working tank 1.2 from the cleaning tank 1.4 through the circulating pump 3.2, and the cleaning liquid enters a stage of separating and purifying clear liquid through the ultrafiltration membrane 5.5 again after the cleaning is finished.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a solvent type coating washs useless organic solvent regeneration pretreatment systems, includes head tank, working tank, clear solution jar, milipore filter, the head tank is through first pipeline intercommunication to the working tank, the working tank is through second pipeline intercommunication to milipore filter, be equipped with the circulating pump on the second pipeline, milipore filter's output is respectively through third pipeline and fourth pipeline intercommunication to working tank and clear solution jar, be equipped with the valve on first pipeline, second pipeline, third pipeline, the fourth pipeline respectively, its characterized in that: the first pipeline is also provided with a first delivery pump and a plurality of filters which are connected in series and used for primary filtration, wherein the filters comprise a basket, a filter bag or/and a filter core.
2. The solvent-based paint cleaning waste organic solvent regeneration pretreatment system according to claim 1, wherein: the first pipeline is provided with a first tee joint at the rear end of the first delivery pump, and one output interface of the first tee joint is communicated with the raw material tank through a fifth pipeline.
3. The solvent-based paint cleaning waste organic solvent regeneration pretreatment system according to claim 1, wherein: the device comprises a circulating pump, and is characterized by further comprising a cleaning tank, wherein the clear liquid tank is communicated to the cleaning tank through a sixth pipeline, a valve and a second conveying pump are arranged on the sixth pipeline, the cleaning tank is communicated to the input end of the circulating pump through a seventh pipeline, and the valve is arranged on the seventh pipeline.
4. A solvent-based paint cleaning waste organic solvent regeneration pretreatment system as claimed in claim 3, wherein: the first delivery pump and the second delivery pump are pneumatic diaphragm pumps.
5. The solvent-based paint cleaning waste organic solvent regeneration pretreatment system according to claim 1, wherein: the working tank is also communicated with an eighth pipeline, and a valve and a third delivery pump are arranged on the eighth pipeline; the working tank is provided with a liquid level meter, and the third pipeline is provided with a flowmeter.
6. The solvent-based paint cleaning waste organic solvent regeneration pretreatment system according to claim 1, wherein: explosion-proof agitators are arranged in the raw material tank and the working tank.
7. The solvent-based paint cleaning waste organic solvent regeneration pretreatment system according to claim 1, wherein: a pressure gauge is provided on the first conduit in front of the filter.
8. The solvent-based paint cleaning waste organic solvent regeneration pretreatment system according to claim 1, wherein: and a pressure gauge is arranged on the second pipeline and positioned at the rear side of the circulating pump.
9. A solvent-based paint cleaning waste organic solvent regeneration pretreatment system as claimed in claim 3, wherein: and liquid level meters are arranged on the raw material tank, the clear liquid tank and the cleaning tank.
10. The solvent-based paint cleaning waste organic solvent regeneration pretreatment system according to claim 1, wherein: and a heat exchanger is also arranged on the third pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320234177.2U CN219333465U (en) | 2023-02-16 | 2023-02-16 | Regeneration pretreatment system for solvent type paint cleaning waste organic solvent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320234177.2U CN219333465U (en) | 2023-02-16 | 2023-02-16 | Regeneration pretreatment system for solvent type paint cleaning waste organic solvent |
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| CN219333465U true CN219333465U (en) | 2023-07-14 |
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| CN202320234177.2U Active CN219333465U (en) | 2023-02-16 | 2023-02-16 | Regeneration pretreatment system for solvent type paint cleaning waste organic solvent |
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