CN108188112B - Liquid carbon dioxide cleaning system - Google Patents
Liquid carbon dioxide cleaning system Download PDFInfo
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- CN108188112B CN108188112B CN201810015654.XA CN201810015654A CN108188112B CN 108188112 B CN108188112 B CN 108188112B CN 201810015654 A CN201810015654 A CN 201810015654A CN 108188112 B CN108188112 B CN 108188112B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0021—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by liquid gases or supercritical fluids
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Abstract
The embodiment of the application discloses liquid carbon dioxide cleaning system includes: a liquid carbon dioxide retention system and an eductor, wherein: the air inlet end of carbon dioxide in the liquid carbon dioxide holding system is communicated with the air inlet end of the refrigerator through a supercharger, and the refrigerator comprises an air storage channel and a refrigerating device; the heating subsystem in the jet machine is arranged at the bottom end of the jet machine, and the carbon dioxide jet subsystem is adjacently arranged at one side of the heating subsystem close to the jet machine; the liquid electromagnetic valve in the carbon dioxide injection subsystem is communicated with the gas storage channel of the refrigerator, the regulating valve is respectively communicated with the liquid electromagnetic valve and the first channel of the carbon dioxide outlet, and the throttle valve is communicated with the second channel of the carbon dioxide outlet and communicated with the hot gas outlet of the heating subsystem through the spray gun. The pressurized carbon dioxide is cooled through the refrigerating machine, the output of the pressurized carbon dioxide is low-temperature liquid carbon dioxide, the carbon dioxide enters the jet machine and keeps pure liquid, and the cleaning effect is improved.
Description
Technical Field
The application relates to the technical field of carbon dioxide cleaning, in particular to a liquid carbon dioxide cleaning system.
Background
With the progress of equipment manufacturing technology, the precision of equipment parts is continuously improved, and the sizes of the parts are continuously reduced. The cleanliness requirements for the equipment parts are therefore also increasing. Since the adhesion on the surface of the component affects the stability of the structure and function of the precision equipment, the precision equipment needs to be repeatedly cleaned during the manufacturing process. The cleaning is to effectively remove various kinds of pollution on the premise of not damaging the structure and the function of the precision equipment parts. Due to the particularity of precision equipment, conventional water washing or wiping washing cannot meet the washing requirements.
The problem that precision equipment cannot be cleaned by traditional cleaning can be solved by carbon dioxide spray cleaning. Carbon dioxide spray cleaning, also known as "snow" cleaning, ejects solid carbon dioxide snow and gaseous carbon dioxide which impact particles on the components to dislodge swept particle contaminants. The carbon dioxide snow is generated when high-pressure liquid carbon dioxide rapidly expands through a specially designed pipeline and a nozzle, so that stable high-pressure liquid carbon dioxide is the key for ensuring the carbon dioxide spray cleaning.
However, due to the special physical properties of carbon dioxide, liquid carbon dioxide is affected by the ambient temperature during transportation, and a gas-liquid mixed state is easily formed, so that the efficiency of generating dry ice and snow is reduced. In the prior art, carbon dioxide is first made into dry ice and then made into particles, and the carbon dioxide is greatly lost through gas transmission. Direct injection with the direct pressure boost of liquid carbon dioxide, because pressure control can't accurate control and ambient temperature influence, also can cause the loss of carbon dioxide to influence abluent effect.
Disclosure of Invention
The application provides a liquid carbon dioxide cleaning system to can not guarantee steadily liquid carbon dioxide output in solving traditional carbon dioxide cleaning process, and then influence the problem of cleaning performance.
In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:
a liquid carbon dioxide cleaning system comprising: a liquid carbon dioxide retention system and an eductor, wherein: the liquid carbon dioxide maintaining system comprises a carbon dioxide inlet end, a supercharger and a refrigerator, the carbon dioxide inlet end is communicated with the inlet end of the refrigerator through the supercharger, and the refrigerator comprises a gas storage channel and a refrigerating device; the injection machine comprises a carbon dioxide injection subsystem and a heating subsystem, wherein the heating subsystem is arranged at the bottom end of the injection machine, and the carbon dioxide injection subsystem is adjacently arranged on one side, close to the injection machine, of the heating subsystem; the carbon dioxide injection subsystem comprises a liquid electromagnetic valve, a regulating valve, a throttling valve and a carbon dioxide outlet, the liquid electromagnetic valve is communicated with the gas storage channel of the refrigerator, the regulating valve is respectively communicated with the liquid electromagnetic valve and the first channel of the carbon dioxide outlet, and the throttling valve is communicated with the second channel of the carbon dioxide outlet and communicated with the hot gas outlet of the heating subsystem through a spray gun.
Optionally, the heating subsystem comprises: the gas source inlet is communicated with the gas solenoid valve, the gas solenoid valve controls the gas flow entering the heater, the heater is communicated with the gas solenoid valve and the hot gas outlet, and the hot gas outlet is communicated with the spray gun.
Optionally, a pressure switch is arranged between the supercharger and the refrigerator, and the pressure switch is used for controlling the pressure value of the carbon dioxide entering the refrigerator.
Optionally, a first filter, a second pressure reducing valve and a second filter are further disposed between the refrigerator and the liquid solenoid valve, the first filter is respectively communicated with the gas storage channel of the refrigerator and the second pressure reducing valve, and the second filter is respectively communicated with the second pressure reducing valve and the liquid solenoid valve.
Optionally, a liquid pressure switch is further disposed in a passage between the second filter and the liquid solenoid valve, and the liquid pressure switch is used for displaying and controlling a pressure value of carbon dioxide of the spraying machine.
Optionally, a third filter is disposed between the air source inlet and the first pressure reducing valve, and the third filter is respectively communicated with the air source inlet and the first pressure reducing valve.
Optionally, a gas pressure switch and a gas temperature switch are further respectively arranged on a passage between the heater and the hot gas outlet, and the gas pressure switch and the gas temperature switch are used for controlling gas heating.
Optionally, the refrigerator is further connected to a liquid temperature switch, and the liquid temperature switch is used for measuring the temperature of liquid carbon dioxide in the refrigerator.
Optionally, the liquid carbon dioxide cleaning system comprises a tank shell, the liquid carbon dioxide holding system and the spraying machine are both arranged in the tank shell, and universal wheels are further fixedly arranged at the bottom end of the tank.
It can be seen from the above technical solution that a liquid carbon dioxide cleaning system that this application embodiment provided includes: a liquid carbon dioxide retention system and an eductor, wherein: the liquid carbon dioxide maintaining system comprises a carbon dioxide inlet end, a supercharger and a refrigerator, the carbon dioxide inlet end is communicated with the inlet end of the refrigerator through the supercharger, and the refrigerator comprises a gas storage channel and a refrigerating device; the injection machine comprises a carbon dioxide injection subsystem and a heating subsystem, wherein the heating subsystem is arranged at the bottom end of the injection machine, and the carbon dioxide injection subsystem is adjacently arranged on one side, close to the injection machine, of the heating subsystem; the carbon dioxide injection subsystem comprises a liquid electromagnetic valve, a regulating valve, a throttling valve and a carbon dioxide outlet, the liquid electromagnetic valve is communicated with the gas storage channel of the refrigerator, the regulating valve is respectively communicated with the liquid electromagnetic valve and the first channel of the carbon dioxide outlet, and the throttling valve is communicated with the second channel of the carbon dioxide outlet and communicated with the hot gas outlet of the heating subsystem through a spray gun. This application is cooled down through the refrigerator with the carbon dioxide after the pressure boost, and what guaranteed the output is microthermal liquid carbon dioxide for keep pure liquid state in the transport of reentrant jet plane, reach the maximum efficiency of production dry ice, improve abluent effect.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a schematic block diagram of one embodiment of a liquid carbon dioxide cleaning system provided herein;
FIG. 2 is a schematic diagram of the internal structure of a liquid carbon dioxide cleaning system provided herein;
in fig. 1-2, the symbols are represented as:
1-liquid carbon dioxide holding system, 2-jet machine, 3-carbon dioxide gas inlet end, 4-booster, 5-refrigerator, 6-liquid electromagnetic valve, 7-regulating valve, 8-throttling valve, 9-carbon dioxide outlet, 10-gas source inlet, 11-first pressure reducing valve, 12-gas electromagnetic valve, 13-heater, 14-hot gas outlet, 15-pressure switch, 16-first filter, 17-second pressure reducing valve, 18-second filter, 19-liquid pressure switch, 20-third filter, 21-gas pressure switch, 22-gas temperature switch, 23-liquid temperature switch, 24-spray gun, 25-box shell and 26-universal wheel.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic structural diagram of an embodiment of a liquid carbon dioxide cleaning system provided by the present application, the apparatus shown in fig. 1 includes: liquid carbon dioxide keeps system 1 and jet plane 2, liquid carbon dioxide keeps system 1 and jet plane 2 fixed the setting in the box shell 25, the box bottom is the fixed universal wheel 26 that is provided with still, and the setting of universal wheel 26 can guarantee that liquid carbon dioxide cleaning system can be convenient remove, satisfies the demand of production.
As shown in fig. 2, the liquid carbon dioxide retention system 1 includes a carbon dioxide inlet 3, a booster 4, and a refrigerator 5. The carbon dioxide inlet end 3 is connected with a carbon dioxide gas source, and carbon dioxide required by the device can be provided by a carbon dioxide generating device. The carbon dioxide inlet end 3 is communicated with the inlet end of the refrigerator 5 through the supercharger 4, the supercharger 4 is arranged to ensure that the carbon dioxide entering the refrigerator 5 reaches the pressure of pure liquid carbon dioxide, so the pressure generated by the supercharger 4 must meet the requirement of carbon dioxide liquefaction, and the supercharged carbon dioxide can be supercritical carbon dioxide. The refrigerator 5 comprises a gas storage channel and a refrigerating device. After the liquid carbon dioxide enters the gas storage pipeline of the refrigerator 5, the refrigerating device starts to work, and the temperature of the entered carbon dioxide is reduced, so that the gas storage pipeline of the refrigerator 5 is filled with the liquid carbon dioxide. The refrigerator 5 is further connected with a liquid temperature switch 23, and the liquid temperature switch 23 is used for measuring the temperature of the liquid carbon dioxide in the refrigerator 5, so that the liquid carbon dioxide can be kept in a good liquid state. A pressure switch 15 is arranged between the supercharger 4 and the refrigerator 5, and the pressure switch 15 is used for controlling the pressure value of the liquid carbon dioxide entering the refrigerator 5.
The injection machine 2 comprises a carbon dioxide injection subsystem and a heating subsystem, wherein the heating subsystem is arranged at the bottom end of the injection machine, and the carbon dioxide injection subsystem is adjacently arranged on one side, close to the injection machine, of the heating subsystem. As is clear from the physical properties of carbon dioxide, when liquid carbon dioxide is gasified, a large amount of heat is absorbed, and dry ice is generated. However, excessive gasification and excessive formation of dry ice can block the lines of the carbon dioxide injection subsystem. The protection pipeline of the heating subsystem can provide certain controllable heat, so that the pipeline is smooth, and the dry ice is generated stably and is easy to control; in addition, during carbon dioxide cleaning, a large amount of heat can be absorbed, water mist is generated on the cleaning surface, the cleaning effect is influenced, the protection pipeline of the heating subsystem can provide certain controllable heat, and the heat is sprayed out through the nozzle, so that the cleaning surface is dry and comfortable and has no mist.
Further, the carbon dioxide injection subsystem comprises a liquid solenoid valve 6, a regulating valve 7, a throttle valve 8 and a carbon dioxide outlet 9. The liquid electromagnetic valve 6 is communicated with the gas storage channel of the refrigerator 5, a first filter 16, a second pressure reducing valve 17 and a second filter 18 are arranged between the liquid electromagnetic valve 6 and the connecting pipeline of the refrigerator 5, the first filter 16 is respectively communicated with the gas storage channel of the refrigerator 5 and the second pressure reducing valve 17, and the second filter 18 is respectively communicated with the second pressure reducing valve 17 and the liquid electromagnetic valve 6. The first filter 16 is arranged to remove impurities from the liquid carbon dioxide, ensuring the purity of the liquid carbon dioxide entering the second pressure reducing valve 17. After the liquid carbon dioxide outputted from the first filter 16 enters the second pressure reducing valve 17, the second pressure reducing valve 17 stably controls the pressure of the liquid carbon dioxide.
The treated liquid carbon dioxide enters a second filter 18 for secondary filtration, and finally enters a liquid electromagnetic valve 6 to control the liquid carbon dioxide to be gasified. The passage between the second filter 18 and the liquid solenoid valve 6 is also provided with a liquid pressure switch 19. The hydraulic pressure switch 19 controls the operating pressure of the pilot hydraulic solenoid valve.
The regulating valve 7 is respectively communicated with the liquid electromagnetic valve 6 and the carbon dioxide outlet 9. The regulating valve 7 is used for controlling the liquid flow of the liquid carbon dioxide entering the throttling valve 7. Since the cleaning operation is performed by using the liquid carbon dioxide cleaning system, different amounts of liquid carbon dioxide are required according to different requirements, so that too much and too little can not meet the requirements of the operation, and the function of the regulating valve 7 is particularly important. The carbon dioxide outlet 9 has two channels, the first channel is connected with the regulating valve 7 and transmits liquid carbon dioxide, the second channel is connected with the throttling valve 8 and transmits hot gas, and the hot gas channel wraps the liquid carbon dioxide channel. The hot gas entering the throttle valve 8 controls the hot gas flow through throttling, and the carbon dioxide channel is kept smooth. The carbon dioxide outlet 9 is connected with a spray gun 24, and the required cleaning work is completed through the spray gun 24.
The heating subsystem includes: a gas source inlet 10, a first pressure reducing valve 11, a gas solenoid valve 12, a heater 13 and a hot gas outlet 14. The first pressure reducing valve 11 is respectively communicated with the gas source inlet 10 and the gas electromagnetic valve 12, a third filter 20 is arranged between the gas source inlet 10 and the first pressure reducing valve 11, and the third filter 20 is respectively communicated with the gas source inlet 10 and the first pressure reducing valve 11. The gas source inlet 10 is connected with a hot gas supply device, the hot gas firstly enters a third filter 20, and the third filter 20 filters impurities and water in the hot gas. The filtered gas enters the first pressure reducing valve 11, and the first pressure reducing valve 11 can control the flow rate of the heated gas by pressure, so that the first pressure reducing valve 11 can stably reduce the pressure.
The gas enters a gas electromagnetic valve 12, the gas electromagnetic valve 12 controls the gas entering the heater 13 to be heated, and the heater 13 is respectively communicated with the gas electromagnetic valve 12 and the hot gas outlet 14. A gas pressure switch 21 and a gas temperature switch 22 are respectively arranged on a channel between the heater 13 and the hot gas outlet 14. Wherein, the gas pressure switch 21 controls and checks whether the air pressure exists in the indirect heating pipeline, so as to prevent the heater 13 from being burnt empty; the gas temperature switch 22 controls the temperature of the heating and provides a controlled amount of heat to optimize the piping in the carbon dioxide injection subsystem. The hot gas outlet 14 is connected to a spray gun 24, and the required cleaning is accomplished by the spray gun 24.
The spray gun 24 is a three-way structure, and the spray gun 24 is respectively connected with two channels of the carbon dioxide outlet 9 and the hot gas outlet 14. On the one hand, it delivers carbon dioxide to the nozzle; on the other hand, hot gas is delivered to the nozzle and the carbon dioxide outlet 9, respectively. The carbon dioxide and the hot gas delivered to the nozzle accelerate or decelerate to spray carbon dioxide snow according to the structure of the nozzle, and the required cleaning work is finished. The hot gas reaching the carbon dioxide outlet 9 protects the carbon dioxide conveying pipeline, so that the pipeline is not blocked when the liquid carbon dioxide is gasified to generate snow in the pipeline conveying process.
As can be seen from the foregoing embodiments, the present embodiment provides a liquid carbon dioxide cleaning system, including: a liquid carbon dioxide retention system 1 and an eductor 2, wherein: the liquid carbon dioxide maintaining system 1 comprises a carbon dioxide inlet end 3, a supercharger 4 and a refrigerator 5, wherein the carbon dioxide inlet end 3 is communicated with the inlet end of the refrigerator 5 through the supercharger 4, and the refrigerator 5 comprises a gas storage channel and a refrigerating device; the injection machine 2 comprises a carbon dioxide injection subsystem and a heating subsystem, the heating subsystem is arranged at the bottom end of the injection machine, and the carbon dioxide injection subsystem is adjacently arranged on one side, close to the injection machine, of the heating subsystem; the carbon dioxide injection subsystem comprises a liquid electromagnetic valve 6, a regulating valve 7, a throttle valve 8 and a carbon dioxide outlet 9, the liquid electromagnetic valve 6 is communicated with a gas storage channel of the refrigerator 5, and the regulating valve 7 is respectively communicated with the liquid electromagnetic valve 6 and a first channel of the carbon dioxide outlet 9. The throttle valve 8 is in communication with the second passage of the carbon dioxide outlet 9 and is in communication with the hot gas outlet 14 via a lance 24. This application is cooled down through the refrigerator with the carbon dioxide after the pressure boost, and what has guaranteed the output is microthermal liquid carbon dioxide for keep pure liquid state in the transport of reentrant injection machine, reach the maximum efficiency of ice and snow futilely of production, improve abluent effect.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (8)
1. A liquid carbon dioxide cleaning system, comprising: a liquid carbon dioxide retention system (1) and an eductor (2), wherein:
the liquid carbon dioxide maintaining system (1) comprises a carbon dioxide inlet end (3), a supercharger (4) and a refrigerator (5), wherein the carbon dioxide inlet end (3) is communicated with the inlet end of the refrigerator (5) through the supercharger (4), and the refrigerator (5) comprises a gas storage channel and a refrigerating device;
the injection machine (2) comprises a carbon dioxide injection subsystem and a heating subsystem, wherein the heating subsystem is arranged at the bottom end of the injection machine, and the carbon dioxide injection subsystem is adjacently arranged on one side, close to the injection machine, of the heating subsystem; the carbon dioxide injection subsystem comprises a liquid electromagnetic valve (6), a regulating valve (7), a throttle valve (8) and a carbon dioxide outlet (9), the liquid electromagnetic valve (6) is communicated with a gas storage channel of the refrigerator (5), the regulating valve (7) is respectively communicated with the liquid electromagnetic valve (6) and a first channel of the carbon dioxide outlet (9), and the throttle valve (8) is communicated with a second channel of the carbon dioxide outlet (9) and is communicated with a hot gas outlet of the heating subsystem through a spray gun;
the heating subsystem includes: the gas source device comprises a gas source inlet (10), a first reducing valve (11), a gas electromagnetic valve (12), a heater (13) and a hot gas outlet (14), wherein the first reducing valve (11) is respectively communicated with the gas source inlet (10) and the gas electromagnetic valve (12), the gas electromagnetic valve (12) controls the flow of gas entering the heater (13), the heater (13) is respectively communicated with the gas electromagnetic valve (12) and the hot gas outlet (14) and communicated with a spray gun, and the hot gas outlet (14) is communicated with the spray gun;
the spray gun is of a three-way structure.
2. A liquid carbon dioxide cleaning system according to claim 1, characterized in that a pressure switch (15) is arranged between the booster (4) and the refrigerator (5), the pressure switch (15) being adapted to control the pressure value of the carbon dioxide entering the refrigerator (5).
3. The liquid carbon dioxide cleaning system according to claim 2, wherein a first filter (16), a second pressure reducing valve (17) and a second filter (18) are further disposed between the refrigerator (5) and the liquid solenoid valve (6), the first filter (16) is communicated with the second pressure reducing valve (17) and the gas storage channel of the refrigerator (5), respectively, and the second filter (18) is communicated with the second pressure reducing valve (17) and the liquid solenoid valve, respectively.
4. A liquid carbon dioxide washing system according to claim 3, characterized in that the passage between the second filter (18) and the liquid solenoid valve (6) is further provided with a liquid pressure switch (19), and the liquid pressure switch (19) is used for displaying and controlling the pressure value of the carbon dioxide of the sprayer (2).
5. A liquid carbon dioxide cleaning system according to claim 1, wherein a third filter (20) is arranged between the gas source inlet (10) and the first pressure reducing valve (11), the third filter (20) being in communication with the gas source inlet (10) and the first pressure reducing valve (11), respectively.
6. A liquid carbon dioxide cleaning system according to claim 5, wherein a gas pressure switch (21) and a gas temperature switch (22) are respectively arranged on the passage between the heater (13) and the hot gas outlet (14), and the gas pressure switch (21) and the gas temperature switch (22) are used for controlling gas heating.
7. A liquid carbon dioxide washing system according to claim 1, characterized in that a liquid temperature switch (23) is further connected to the refrigerator (5), said liquid temperature switch (23) being adapted to measure the temperature of the liquid carbon dioxide in the refrigerator (5).
8. The liquid carbon dioxide cleaning system according to claim 7, wherein the liquid carbon dioxide cleaning system comprises a tank shell (25), the liquid carbon dioxide holding system (1) and the spraying machine (2) are arranged in the tank shell (25), and universal wheels (26) are fixedly arranged at the bottom end of the tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810015654.XA CN108188112B (en) | 2018-01-08 | 2018-01-08 | Liquid carbon dioxide cleaning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810015654.XA CN108188112B (en) | 2018-01-08 | 2018-01-08 | Liquid carbon dioxide cleaning system |
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| CN108188112A CN108188112A (en) | 2018-06-22 |
| CN108188112B true CN108188112B (en) | 2020-10-30 |
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Families Citing this family (4)
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| CN111360073B (en) * | 2020-02-13 | 2021-08-03 | 中南大学 | Method for improving surface roughness of rolled copper foil |
| CN111254858B (en) * | 2020-03-06 | 2021-09-21 | 西南交通大学 | Liquid carbon dioxide cleaning machine and cleaning method |
| CN111672236A (en) * | 2020-05-19 | 2020-09-18 | 茂名华粤华源气体有限公司 | Preparation method for separating and purifying liquid carbon dioxide |
| CN114015518B (en) * | 2021-12-01 | 2023-10-27 | 重庆朗福环保科技有限公司 | Carbon-cleaning powerful gas cleaning agent and preparation and use methods thereof |
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| TW478974B (en) * | 1999-10-13 | 2002-03-11 | Nippon Oxygen Co Ltd | Device for and method of producing/supplying dry ice snow, cleaning device and cleaning method |
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