Full-automatic hydrocarbon cleaning vacuum drying device and using method thereof

Abstract

The invention provides a full-automatic hydrocarbon cleaning vacuum drying device and a using method thereof.The using method of the full-automatic hydrocarbon cleaning vacuum drying device comprises the following steps that S1, a workpiece to be cleaned is placed in a cleaning cavity; s2, the cleaning cavity is vacuumized for the first time; s3, spraying and rough washing; s4, after reaching the liquid level, carrying out ultrasonic rough washing; s5, after ultrasonic rough cleaning is completed, liquid discharging is conducted, and after liquid discharging is completed, the cleaning cavity is vacuumized for the second time; s6, spraying and fine washing; s7, after the liquid level is reached, ultrasonic fine washing is conducted; s8, after ultrasonic fine washing is completed, liquid discharging is conducted; according to the full-automatic hydrocarbon cleaning vacuum drying device, efficient and automatic cleaning operation on various workpieces to be cleaned under different temperature and different cleanliness requirements can be achieved through the full-automatic hydrocarbon cleaning vacuum drying device, and the cleaning effect and efficiency are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning and drying equipment, and in particular to a fully automatic hydrocarbon cleaning vacuum drying device and a use method thereof. Background Art

[0002] The vacuum hydrocarbon cleaning machine uses the mechanical vibration force of ultrasonic wave with strong penetration to impact the workpiece surface, and combines the chemical decontamination effect of hydrocarbon cleaning agent to perform comprehensive cleaning under vacuum state, so that the workpiece surface and blind holes and slits are clean.

[0003] The vacuum hydrocarbon cleaning machine is a cleaning device for cleaning precision industrial parts. It uses hydrocarbon solvents as cleaning media and combines vacuum technology to perform efficient and environmentally friendly cleaning operations. This type of cleaning machine is widely used in the cleaning of precision parts, optical instruments, electronic components and other fields. The working principle of the hydrocarbon solvent vacuum cleaning machine is mainly to achieve efficient cleaning through the vacuum environment and the special properties of hydrocarbon solvents. In a vacuum environment, the gas pressure is reduced, which reduces the boiling point of the hydrocarbon solvent, so that cleaning can be performed at a lower temperature. This can not only improve the cleaning efficiency, but also avoid damage to the cleaned items due to high temperature;

[0004] The current hydrocarbon cleaning machines can only clean a certain type of workpiece. However, due to the different temperature resistance and cleaning requirements of various workpieces, a single hydrocarbon cleaning machine can no longer meet the adaptive adjustment cleaning requirements of various workpieces at different temperatures and different cleanliness requirements, resulting in poor cleaning effects and poor applicability of the cleaning machine, which greatly reduces the cleaning efficiency and effect of various workpieces. Summary of the invention

[0005] In view of this, the present invention provides a fully automatic hydrocarbon cleaning vacuum drying device and a method of using the same, which can achieve efficient automatic cleaning operations for various workpieces to be cleaned at different temperatures and with different cleanliness requirements, greatly improving the cleaning effect and efficiency.

[0006] In order to solve the above technical problems, the present invention provides a fully automatic hydrocarbon cleaning vacuum drying device and a method for using the same. The method for using the fully automatic hydrocarbon cleaning vacuum drying device comprises the following steps:

[0007] S1, placing the workpiece to be cleaned into the cleaning chamber, and conveying the workpiece to be cleaned in the cleaning basket into the cleaning chamber by an automatic conveyor;

[0008] S2, evacuate the cleaning chamber for the first time, start the vacuum pump to evacuate the cleaning chamber, and evacuate the air pressure in the cleaning chamber to -95Kpa±10Kpa;

[0009] S3, spray rough cleaning, introducing the rough cleaning liquid in the rough cleaning liquid storage tank in the cleaning system into the spray main pipe to spray the workpiece to be cleaned in the cleaning chamber for rough cleaning;

[0010] S4, after the liquid level is reached, ultrasonic rough cleaning is performed, and the ultrasonic generator is started to perform ultrasonic rough cleaning on the workpiece to be cleaned in the cleaning chamber;

[0011] S5. After the ultrasonic rough cleaning is completed, the liquid is drained. After the liquid is drained, the cleaning chamber is vacuumed for the second time to reduce the air pressure to -95Kpa±10Kpa;

[0012] S6, spray fine washing, introducing the fine washing liquid in the fine washing liquid storage tank in the cleaning system into the spray main pipe to perform a spray fine washing operation on the workpiece to be cleaned in the cleaning chamber;

[0013] S7, after reaching the liquid level, ultrasonic fine cleaning is performed, and the ultrasonic generator is started to perform ultrasonic fine cleaning on the workpiece to be cleaned in the cleaning chamber;

[0014] S8, after the ultrasonic fine cleaning is completed, the cleaning liquid is discharged into the distillation tank for distillation recovery operation;

[0015] S9. After draining, the workpiece in the cleaning chamber is dried, and the residual cleaning agent on the workpiece is dried, discharged and collected, thereby achieving a drying operation on the workpiece.

[0016] In step S9, after the drainage is completed, if the workpiece to be cleaned is a temperature-resistant workpiece, it is necessary to evacuate the cleaning chamber for the third time after the drainage, and pump the air pressure inside to -95Kpa±10Kpa. After the third vacuuming is completed, steam bath washing is performed, and the steam bath washing time is not less than 5 minutes. After the steam bath washing is completed, the workpiece in the cleaning chamber is directly vacuum dried, and the vacuum drying time is not less than 8 minutes. No drying is required. After drying is completed, the workpiece can be taken out of the cleaning chamber, thereby completing the fully automatic cleaning and drying operations of the temperature-resistant workpiece.

[0017] In step S9, when the drainage is completed, if the workpiece to be cleaned is a non-heat-resistant workpiece, the cleaning chamber after drainage needs to be hot air dried. The temperature of hot air drying is between 45°C and 55°C, and the drying time is not less than 15 minutes. After drying, the workpiece can be taken out of the cleaning chamber, thereby completing the automatic cleaning and drying operation of the non-heat-resistant workpiece.

[0018] When cleaning workpieces with non-high temperature grease, the pressure of the spray rough cleaning in the cleaning chamber in S3 and the spray fine cleaning in the cleaning chamber in S6 are both 2Bar-3Bar;

[0019] When cleaning workpieces with high-temperature grease, the pressure in the spray rough cleaning in the cleaning chamber in S3 and the pressure in the cleaning chamber in S6 are both 3Bar-4Bar;

[0020] When cleaning a carbon-deposited workpiece, the time for the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 is 480S-600S. When cleaning a non-carbon-deposited workpiece, the time for the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 is 300S-450S.

[0021] The temperatures for the spray rough cleaning in S3, the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 are all 50°C ± 5°C, and the temperature in the cleaning chamber for the spray fine cleaning in S6 is 60°C ± 5°C;

[0022] The frequencies of the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 are both 28KHz-36KHz;

[0023] The rotation angles of the spray rough washing in S3, the ultrasonic rough washing in S4 and the spray fine washing in S6 are all -15°±10° or 15°±10°, and the vacuum degree is -50Kpa±10Kpa.

[0024] When the cleaning temperature of the workpiece cannot exceed 80℃, the time of ultrasonic fine cleaning in S7 is 200S-280S, the time of hot air drying in S9 is 900S-1200S, and the temperature is 60℃±5℃;

[0025] When the workpiece to be cleaned has no special pollutants or is cleaning a workpiece with high-temperature and high-grease impurities, the drying method in step S9 is steam bath washing, the steam bath washing temperature is 110°C ± 5°C, the time is 300S-380S, the vacuum degree is -50Kpa ± 10Kpa, and vacuum drying is required after steam bath washing, the vacuum drying time is 300S-380S, and the vacuum degree is -98Kpa ± 10Kpa;

[0026] When the workpiece with carbon deposits needs to be cleaned, a rinsing pretreatment process needs to be added before S1. The drying method in step S9 is steam bath washing. The temperature of the steam bath washing is 110℃±5℃, the time is 420S-520S, and the vacuum degree is -50Kpa±10Kpa. Vacuum drying is required after the steam bath washing. The vacuum drying time is 300S-380S, and the vacuum degree is -98Kpa±10Kpa.

[0027] A fixed frame is provided with a cleaning system inside the fixed frame, the cleaning system comprises a cleaning chamber and a cleaning agent storage tank connected to the cleaning chamber, the cleaning solvent in the cleaning agent storage tank is introduced into the cleaning chamber to clean the workpiece to be cleaned, the cleaning agent storage tank comprises a rough cleaning storage tank and a fine cleaning storage tank, the rough cleaning storage tank and the fine cleaning storage tank are connected to the cleaning chamber through a three-way control valve, the outlet of the rough cleaning storage tank is connected to one branch of the three-way control valve through a pipeline, the outlet of the fine cleaning storage tank is connected to another branch of the three-way control valve through a pipeline, the end of the main pipe of the three-way control valve is provided with a liquid pump, and the water suction port of the liquid pump is connected to the water suction port of the three-way control valve. The main pipes of the three-way control valve are connected through a pipeline, and a liquid extraction valve, a filter and a spray valve are sequentially arranged on the pipeline between the water suction port of the liquid extraction pump and the three-way control valve, and the outlet of the spray valve is connected to the inlet of the spray liquid inlet main pipe. The present invention can realize the introduction of the cleaning agent in the rough cleaning liquid storage tank into the spray liquid inlet main pipe through the three-way control valve in the cleaning system in conjunction with the liquid extraction pump to realize the rough cleaning operation of the workpiece to be cleaned in the cleaning chamber, and can also realize the introduction of the cleaning agent in the fine cleaning liquid storage tank into the spray liquid inlet main pipe to realize the fine cleaning operation of the workpiece to be cleaned in the cleaning chamber, which greatly improves the cleaning effect and efficiency of the workpiece, and the operation is more convenient and efficient;

[0028] The distillation system comprises a distillation tank, which is connected with the cleaning chamber and is used for distilling the cleaning solvent after cleaning. The distillation tank is a hollow structure and a double-sandwich structure, and the outer interlayer thereof is provided with heat-conducting oil or water, and the inner interlayer is connected with the discharge port of the cleaning system. The heat-conducting oil and water in the outer interlayer are heated by an electric heater, thereby heating and evaporating the cleaning solvent in the inner interlayer, so that the cleaning solvent is evaporated to participate in the bathing process of the cleaning system. The distillation system also comprises a vacuum pump arranged outside the distillation tank and connected with the distillation tank through a pipeline, and the vacuum pump is connected with the cleaning chamber through a pipeline; the distillation tank is connected with the cleaning chamber through a filter pump;

[0029] The drying system includes a heat exchanger, which is connected to the cleaning chamber. The heat exchanger is connected to the cleaning chamber through a pipeline and is used to dry the workpiece after cleaning. The heat exchanger does not work at ordinary times. When the workpiece to be cleaned is a rubber workpiece, the distillation system does not work. The workpiece in the cleaning chamber is dried with the help of the heat exchanger. The drying temperature is 55°C ± 3°C.

[0030] A recovery system is also provided in the fixed frame, and the recovery system includes a heat recovery pipe, one end of the heat recovery pipe is connected to the heat exhaust port of the distillation tank, and the other end is connected to the cleaning chamber, and is used for introducing excess heat generated by the distillation of the distillation tank into the cleaning system. The outlet of the distillation tank is connected to the inlet of the spray liquid inlet main pipe through a pipe, and a spray valve is provided on the pipe between the outlet of the distillation tank and the inlet of the spray liquid inlet main pipe. After the fine washing is completed, the fine washing liquid in the cleaning chamber is evacuated by the liquid extraction pump, and the vacuum pump evacuates the cleaning chamber. At this time, the spray valve is opened, and the pure hydrocarbon vapor generated by the distillation in the distillation tank is also sucked into the cleaning chamber by the water pump. When the steam passes through the spray liquid inlet main pipe, the steam blows away the residual accumulated liquid in the spray liquid inlet main pipe, and steam cleans the workpiece, thereby realizing the blowing out, recovery and reuse of the residual accumulated liquid in the spray liquid inlet main pipe, which improves the utilization efficiency of the cleaning solvent to a certain extent and is more energy-saving.

[0031] A heat exchange valve is provided on the pipeline between the vacuum pump and the distillation tank, the heat exchange valve is connected to the inlet of the heat exchange pipeline, and the outlet of the heat exchange pipeline is connected to the spray liquid inlet main pipe of the cleaning chamber. The present invention can realize the vacuum operation in the cleaning chamber through the vacuum pump in conjunction with the heat exchange valve, which is convenient for cooperating with the cleaning system, the distillation system and the drying system to realize efficient cleaning of the workpieces in the cleaning chamber, distillation and reuse of the cleaning agent after cleaning, and efficient drying or drying of the cleaned workpieces, thereby greatly improving the cleaning effect and efficiency of the workpieces.

[0032] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The present invention can realize efficient, automatic and convenient automatic cleaning operations for various workpieces to be cleaned through the cleaning system, the distillation system and the drying system, and can realize automatic drying of the cleaned workpieces according to the temperature resistance of different workpieces, and at the same time realize efficient and automatic recovery and reuse of the cleaning agent adhered thereto, which greatly improves the use efficiency of the cleaning agent and the cleaning efficiency of the workpieces, and is more convenient to operate.

[0034] 2. The present invention can evacuate the cleaning chamber through a vacuum pump, and then open the spray valve. At this time, the pure hydrocarbon vapor produced by distillation in the distillation tank is also sucked into the cleaning chamber by the water pump. When the steam passes through the spray liquid inlet main pipe, the steam blows away the remaining accumulated liquid in the spray liquid inlet main pipe, and performs steam cleaning on the workpiece, thereby realizing the blowing out, recycling and reuse of the remaining accumulated liquid in the spray liquid inlet main pipe, improving the utilization efficiency of the cleaning solvent to a certain extent, avoiding unnecessary waste of the cleaning accumulated liquid remaining in the spray liquid main pipe, and being more energy-saving and environmentally friendly.

[0035] 3. The present invention can realize the efficient and automatic cleaning operation of stubborn stains remaining on the workpiece to be cleaned repeatedly by spray rough cleaning combined with spray fine cleaning, ultrasonic rough cleaning combined with ultrasonic fine cleaning, and can realize the vacuum operation in the cleaning chamber through the cooperation of a vacuum pump to reduce the boiling point of the cleaning solvent, thereby realizing the efficient distillation and reuse of the cleaning solvent, which greatly improves the efficiency of the recycling of hydrocarbon solvents and makes the operation more convenient and efficient.

[0036] 4. The present invention can realize efficient distillation and recycling of hydrocarbon cleaning agents in the cleaning process through the distillation system. At the same time, the excess heat or excess hydrocarbon solvent generated by the distillation system can be reintroduced into the cleaning chamber to participate in the steam bath cleaning operation, which greatly improves the utilization efficiency of the hydrocarbon solvent and the unnecessary dissipation of excess heat from the distillation. It also helps to accelerate the efficiency of the vacuum pump in evacuating the cleaning chamber, making the operation more convenient.

[0037] 5. The present invention connects the air outlet of the vacuum pump with the cleaning chamber through a pipeline. By starting the vacuum pump, the air in the cleaning chamber can be extracted, thereby reducing the air concentration in the cleaning chamber and reducing the boiling point of the hydrocarbon solvent involved in the circulation of the entire distillation recovery mechanism. This not only reduces the loss of heat required for heating the hydrocarbon solvent and oil in the distillation kettle, but also reduces the boiling point of the hydrocarbon solvent in the cleaning chamber. The temperature of the circulating hydrocarbon cleaning solvent is also reduced to a certain extent, thereby avoiding damage to the workpiece by the high-temperature hydrocarbon solvent in the distillation. This not only plays a role in efficiently cleaning the workpiece, but also effectively protects the workpiece. The invention can be applied to various environments at different altitudes and temperatures, is more convenient and energy-saving, and saves fuel or energy required for heating the distillation kettle to boil and vaporize the cleaning agent and grease therein, thereby achieving higher distillation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the method for using the fully automatic hydrocarbon cleaning vacuum drying device of the present invention;

[0039] Figure 2 This is a schematic diagram of the control system software operation principle of the fully automatic hydrocarbon cleaning vacuum drying device of the present invention;

[0040] Figure 3 It is a structural schematic diagram of the fully automatic hydrocarbon cleaning vacuum drying device of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the process pipeline valves of the fully automatic hydrocarbon cleaning vacuum drying device of the present invention.

[0042] Explanation of the reference numerals: 100, fixed frame; 200, cleaning system; 210, cleaning chamber; 220, cleaning agent storage tank; 300, distillation system; 310, distillation tank; 320, vacuum pump; 400, drying system; 410, heat exchanger; 500, recovery system; 510, heat recovery pipe. DETAILED DESCRIPTION

[0043] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1-4 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0044] like Figure 1 As shown: This embodiment provides a fully automatic hydrocarbon cleaning vacuum drying device and a method for using the same, wherein a method for using the fully automatic hydrocarbon cleaning vacuum drying device comprises the following steps:

[0045] S1, placing the workpiece to be cleaned into the cleaning chamber 210, and conveying the workpiece to be cleaned in the cleaning basket into the cleaning chamber 210 by an automatic conveyor;

[0046] S2, the cleaning chamber 210 is vacuumed for the first time, and the vacuum pump 320 is started to vacuum the cleaning chamber 210, and the air pressure therein is pumped to -95Kpa±10Kpa, generally to -95Kpa;

[0047] S3, spray rough washing, introducing the rough washing liquid in the rough washing liquid storage tank in the cleaning system 200 into the spray main pipe to spray the workpiece to be cleaned in the cleaning chamber 210 for rough washing;

[0048] S4, after the liquid level is reached, ultrasonic rough cleaning is performed, and the ultrasonic generator is started to perform ultrasonic rough cleaning on the workpiece to be cleaned in the cleaning chamber 210;

[0049] S5, after the ultrasonic rough cleaning is completed, the liquid is drained. After the liquid is drained, the cleaning chamber 210 is vacuumed for the second time, and the air pressure therein is pumped to -95Kpa±10Kpa, generally to -95Kpa;

[0050] S6, spray fine washing, introducing the fine washing liquid in the fine washing liquid storage tank in the cleaning system 200 into the spray main pipe to perform a spray fine washing operation on the workpiece to be cleaned in the cleaning chamber 210;

[0051] S7, after reaching the liquid level, ultrasonic fine cleaning is performed, and the ultrasonic generator is started to perform ultrasonic fine cleaning on the workpiece to be cleaned in the cleaning chamber 210;

[0052] S8, after the ultrasonic fine cleaning is completed, the cleaning liquid is discharged into the distillation tank 310 for distillation recovery operation;

[0053] S9, after draining, drying the workpiece in the cleaning chamber 210, drying, discharging and collecting the residual cleaning agent on the workpiece, and achieving the drying operation of the workpiece;

[0054] The present invention can realize efficient, automatic and convenient automatic cleaning operations on various workpieces to be cleaned by means of the above-mentioned cleaning method, and can automatically dry the cleaned workpieces and recover the cleaning agent adhered thereto at the same time, thereby greatly improving the use efficiency of the cleaning agent and the cleaning efficiency of the workpieces, and making the operation more convenient.

[0055] According to one embodiment of the present invention, Figure 1 and Figure 2 As shown, in step S9, after the drainage is completed, if the workpiece to be cleaned is a temperature-resistant workpiece, it is necessary to evacuate the cleaning chamber 210 for the third time after the drainage, and pump the air pressure therein to -95Kpa±10Kpa, generally to -95Kpa. After the third vacuuming is completed, a steam bath is performed, and the steam bath washing time is not less than 5 minutes. After the steam bath washing is completed, the workpiece in the cleaning chamber 210 is directly vacuum dried, and the vacuum drying time is not less than 8 minutes. No drying is required. After drying is completed, the workpiece can be taken out of the cleaning chamber 210, thereby completing the fully automatic cleaning and drying operation of the temperature-resistant workpiece.

[0056] In step S9, when the drainage is completed, if the workpiece to be cleaned is a non-heat-resistant workpiece, the cleaning chamber 210 after drainage needs to be hot air dried. The temperature of the hot air drying is between 45°C and 55°C, and the drying time is not less than 15 minutes. After the drying is completed, the workpiece can be taken out of the cleaning chamber 210, thereby completing the automatic cleaning and drying operation of the non-heat-resistant workpiece.

[0057] When cleaning a workpiece with non-high temperature grease, the pressure of the spray rough cleaning in the cleaning chamber 210 in S3 and the spray fine cleaning in the cleaning chamber 210 in S6 are both 2Bar-3Bar;

[0058] When cleaning a workpiece with high-temperature grease, the pressure in the spray rough cleaning in the cleaning chamber 210 in S3 and the pressure in the cleaning chamber 210 in S6 are both 3Bar-4Bar;

[0059] When cleaning a carbon-deposited workpiece, the time for the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 is 480S-600S. When cleaning a non-carbon-deposited workpiece, the time for the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 is 300S-450S.

[0060] The temperatures for the spray rough cleaning in S3, the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 are all 50°C ± 5°C, and the temperature in the cleaning chamber 210 for the spray fine cleaning in S6 is 60°C ± 5°C;

[0061] The frequencies of the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 are both 28KHz-36KHz;

[0062] The rotation angles of the spray rough washing in S3, the ultrasonic rough washing in S4 and the spray fine washing in S6 are all -15°±10° or 15°±10°, and the vacuum degree is -50Kpa±10Kpa.

[0063] When the cleaning temperature of the workpiece cannot exceed 80℃, the time of ultrasonic fine cleaning in S7 is 200S-280S, the time of hot air drying in S9 is 900S-1200S, and the temperature is 60℃±5℃;

[0064] When the workpiece to be cleaned has no special pollutants or is cleaning a workpiece with high-temperature and high-grease impurities, the drying method in step S9 is steam bath washing, the steam bath washing temperature is 110°C ± 5°C, the time is 300S-380S, the vacuum degree is -50Kpa ± 10Kpa, and vacuum drying is required after steam bath washing, the vacuum drying time is 300S-380S, and the vacuum degree is -98Kpa ± 10Kpa;

[0065] When the workpiece with carbon deposits needs to be cleaned, a rinsing pretreatment process needs to be added before S1. The drying method in step S9 is steam bath washing. The temperature of the steam bath washing is 110℃±5℃, the time is 420S-520S, and the vacuum degree is -50Kpa±10Kpa. Vacuum drying is required after the steam bath washing. The vacuum drying time is 300S-380S, and the vacuum degree is -98Kpa±10Kpa.

[0066] According to another embodiment of the present invention, Figure 3 and Figure 4As shown, a fixed frame 100 is provided with a cleaning system 200 inside the fixed frame 100, and the cleaning system 200 includes a cleaning chamber 210 and a cleaning agent storage tank 220 connected to the cleaning chamber 210. The cleaning solvent in the cleaning agent storage tank 220 is introduced into the cleaning chamber 210 to clean the workpiece to be cleaned. The cleaning agent storage tank 220 includes a rough cleaning storage tank and a fine cleaning storage tank. The rough cleaning storage tank and the fine cleaning storage tank are connected to the cleaning chamber 210 through a three-way control valve. The outlet of the rough cleaning storage tank is connected to one branch of the three-way control valve through a pipeline, and the outlet of the fine cleaning storage tank is connected to the other branch of the three-way control valve through a pipeline. The end of the main pipe of the three-way control valve is provided with A liquid pump is provided, and the water suction port of the liquid pump is connected to the main pipe of the three-way control valve through a pipeline. The liquid pump valve, filter and spray valve are sequentially arranged on the pipeline between the water suction port of the liquid pump and the three-way control valve, and the outlet of the spray valve is connected to the inlet of the spray liquid inlet main pipe. The present invention can realize the introduction of the cleaning agent in the rough cleaning liquid storage tank into the spray liquid inlet main pipe through the three-way control valve in the cleaning system 200 to achieve the rough cleaning operation of the workpiece to be cleaned in the cleaning chamber 210, and can also introduce the cleaning agent in the fine cleaning liquid storage tank into the spray liquid inlet main pipe to achieve the fine cleaning operation of the workpiece to be cleaned in the cleaning chamber 210, which greatly improves the cleaning effect and efficiency of the workpiece, and the operation is more convenient and efficient.

[0067] The distillation system 300 includes a distillation tank 310, which is connected to the cleaning chamber 210 and is used to distill the cleaning solvent after cleaning. The distillation tank 310 is a hollow structure and a double-sandwich structure. The outer interlayer is provided with heat transfer oil or water. The inner interlayer is connected to the discharge port of the cleaning system 200. The heat transfer oil and water in the outer interlayer are heated by an electric heater, thereby heating and evaporating the cleaning solvent in the inner interlayer, so that the cleaning solvent evaporates and participates in the bathing process of the cleaning system 200. The distillation system 300 also includes a vacuum pump 320 arranged outside the distillation tank 310 and connected to it through a pipeline. The vacuum pump 320 is connected to the cleaning chamber 210 through a pipeline; the distillation tank 310 is connected to the cleaning chamber 210 through a filter pump;

[0068] The drying system 400 includes a heat exchanger 410, which is connected to the cleaning chamber 210. The heat exchanger 410 is connected to the cleaning chamber 210 through a pipeline and is used to dry the workpiece after cleaning. The heat exchanger 410 does not work at ordinary times. When the workpiece to be cleaned is a rubber workpiece, the distillation system 300 does not work, and the workpiece in the cleaning chamber 210 is dried by means of the heat exchanger 410. The drying temperature is 55°C ± 3°C.

[0069] A recovery system 500 is also provided in the fixed frame 100. The recovery system 500 includes a heat recovery pipe 510. One end of the heat recovery pipe 510 is connected to the heat exhaust port of the distillation tank 310, and the other end is connected to the cleaning chamber 210. The heat recovery pipe 510 is used to introduce the excess heat generated by the distillation of the distillation tank 310 into the cleaning system 200. The outlet of the distillation tank 310 is connected to the inlet of the spray liquid inlet main pipe through a pipe. A spray valve is provided on the pipe between the outlet of the distillation tank 310 and the inlet of the spray liquid inlet main pipe. The fine washing is completed. Finally, the fine washing liquid in the cleaning chamber 210 is emptied by the liquid pump, and the vacuum pump 320 evacuates the cleaning chamber 210. At this time, the spray valve is opened, and the pure hydrocarbon vapor produced by distillation in the distillation tank 310 is also sucked into the cleaning chamber 210 by the water pump. When the steam passes through the spray liquid inlet main pipe, the steam blows away the remaining accumulated liquid in the spray liquid inlet main pipe, and steam cleans the workpiece, thereby realizing the blowing out, recovery and reuse of the remaining accumulated liquid in the spray liquid inlet main pipe, which improves the utilization efficiency of the cleaning solvent to a certain extent and is more energy-saving.

[0070] A heat exchange valve is provided on the pipeline between the vacuum pump 320 and the distillation tank 310, the heat exchange valve is connected to the inlet of the heat exchange pipe, and the outlet of the heat exchange pipe is connected to the spray liquid inlet main pipe of the cleaning chamber 210. The present invention can realize the vacuum operation in the cleaning chamber 210 through the vacuum pump 320 in conjunction with the heat exchange valve, which is convenient for cooperating with the cleaning system 200, the distillation system 300 and the drying system 400 to realize efficient cleaning of the workpiece in the cleaning chamber 210, as well as distillation and reuse of the cleaning agent after cleaning and efficient drying or drying of the cleaned workpiece, which greatly improves the cleaning effect and efficiency of the workpiece.

[0071] The method of using the present invention:

[0072] First of all, it should be made clear that the method for using the fully automatic hydrocarbon cleaning vacuum drying device involved in the present invention is mainly used for the fully automatic hydrocarbon cleaning vacuum drying device to automatically clean various workpieces, and the cleaning solvent is a hydrocarbon cleaning liquid. The present invention takes the cleaning process of the fully automatic hydrocarbon cleaning vacuum drying device in the cleaning process of various workpieces as an example to elaborate on its method of use. Here, the following two points need to be made clear:

[0073] First, after the front-end cleaning process of the device is completed, the chamber door of the cleaning chamber 210 is sealed. At this time, the temperature of the parts to be cleaned is 50°C ± 5°C. The vaporized hydrocarbons at 120°C produced by the distillation kettle are introduced through the steam introduction pipe to perform steam bath cleaning on the workpiece for no less than 5 minutes, so that the aperture, narrow slit and surface temperature of the cleaned parts reach 90°C ± 5°C.

[0074] Secondly, the cleaning chamber 210 is evacuated to -95Kpa±10Kpa through the exhaust pipe connected to the vacuum pump 320202. At this time, according to the boiling relationship of hydrocarbons under different gas pressures, the boiling point (gasification) of hydrocarbons is 60-65°C, and the temperature of the cleaning parts is 90°C±5°C. The hydrocarbons attached to the surface of the workpiece are quickly vaporized and continuously discharged outward through the exhaust pipe, and the cleaned parts can be quickly vacuum dried within 60 seconds.

[0075] When it is necessary to clean the workpiece, after the workpiece to be cleaned is transported into the cleaning chamber 210 through the automatic conveyor, it first enters the rough cleaning process: start the motor of the liquid pump to rotate forward, and at the same time start the three-way control valve to open the pipe of the branch pipe connected to the rough cleaning tank, and close the pipe of the branch pipe connected to the fine cleaning tank. Then the liquid pump can extract the hydrocarbon solution from the rough cleaning tank. After being filtered by the filter, the rough cleaning liquid flows into the spray liquid inlet main pipe and the workpiece is spray cleaned. When the liquid level in the sealed cleaning chamber reaches the specified position, start the vacuum pump 320 and start the three-way control valve connected to the sealed cleaning chamber. The branch pipe of the branch pipe is opened, and the pipe connected to the inlet of the distillation tank 310 is closed. The vacuum pump 320 evacuates the sealed cleaning chamber and vacuum cleans the workpieces inside. After the specified time is reached, the motor of the liquid extraction pump is started to reverse. At this time, the liquid extraction pump will extract the hydrocarbon cleaning agent solution after rough washing in the sealed cleaning chamber 210. The hydrocarbon cleaning agent solution after rough washing is filtered again through the filter and flows into the sealed cleaning chamber for cyclic cleaning until the rough washing is completed. Then the liquid extraction pump is started again until the rough washing liquid in the sealed cleaning chamber 210 is pumped into the distillation tank 310. At this time, the rough washing liquid in the sealed cleaning chamber 210 is emptied. At the same time, the pipeline connected to the inlet of the distillation tank 310 is started, and the pipeline of the branch pipe connected to the sealed cleaning chamber 210 is closed, and the vacuum pump 320 is started to evacuate the distillation tank 310. After the cleaning agent in the distillation tank 310 is distilled and regenerated, the water pump is started. Finally, the distilled cleaning agent is pumped into the condensing device by the water pump to be cooled and flow out as pure cleaning agent;

[0076] Then, the fine washing process is entered: the motor of the liquid extraction pump is started to rotate forward, and at the same time, the three-way control valve is started to close the pipe of the branch pipe connected to the rough washing liquid storage tank, and the pipe of the branch pipe connected to the fine washing liquid storage tank is opened. Then the liquid extraction pump can extract the hydrocarbon solution from the fine washing liquid storage tank. After being filtered by the filter, the fine washing liquid flows into the spray liquid inlet main pipe, and the workpiece is sprayed and cleaned. When the liquid level in the sealed cleaning chamber 210 reaches the specified position, the vacuum pump 320 is started to work, and at the same time, the pipe of the branch pipe connected to the sealed cleaning chamber 210 is started, and the pipe connected to the inlet of the distillation tank 310 is closed. The vacuum pump 320 evacuates the sealed cleaning chamber 210 and vacuum cleans the workpieces inside. After the specified time is reached, the motor of the liquid extraction pump is started to reverse. At this time, the liquid extraction pump will extract the hydrocarbon cleaning agent solution after fine washing in the sealed cleaning chamber 210. Liquid, the hydrocarbon cleaning agent solution after fine washing is filtered again through the filter and flows into the sealed cleaning chamber 210 for cyclic cleaning until the fine washing is completed. When the fine washing is completed, the fine washing liquid in the sealed cleaning chamber 210 is emptied by the liquid pump, and the vacuum pump 320 evacuates the sealed cleaning chamber 210. At this time, the spray valve is opened, and the pure hydrocarbon vapor produced by distillation in the distillation tank 310 is also sucked into the sealed cleaning chamber 210 by the water pump. When the steam passes through the spray liquid inlet main pipe, the steam blows away the remaining accumulated liquid in the spray liquid inlet main pipe and steam cleans the workpiece. After the steam bath is completed, the spray valve is closed, the pipeline connected to the inlet of the distillation tank 310 is started, and the pipeline of the branch pipe connected to the sealed cleaning chamber 210 is closed, and the vacuum pump 320 is continued to be started to evacuate the distillation tank 310. Under the action of the vacuum pump 320, the steam is drawn into the heat exchanger 410, and the purpose of drying is also achieved.

[0077] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for using a fully automatic hydrocarbon cleaning vacuum drying device, characterized in that: The steps include: S1, placing the workpiece to be cleaned into the cleaning chamber (210); S2, evacuating the cleaning chamber (210) for the first time; S3, spray rough washing; S4, after reaching the liquid level, perform rough ultrasonic cleaning; S5, after the ultrasonic rough cleaning is completed, the liquid is drained, and after the liquid is drained, the cleaning chamber (210) is vacuumed for the second time; S6, spray fine washing; S7, after reaching the liquid level, ultrasonic fine cleaning is performed; S8, draining after ultrasonic fine cleaning is completed; S9. After draining, the workpiece in the cleaning chamber (210) is dried.

2. The method for using the fully automatic hydrocarbon cleaning vacuum drying device according to claim 1, characterized in that: In step S9, after the drainage is completed, if the workpiece to be cleaned is a temperature-resistant workpiece, it is necessary to vacuum the cleaning chamber (210) for the third time after the drainage. After the third vacuuming is completed, a steam bath is performed. After the steam bath is completed, the workpiece in the cleaning chamber (210) is directly vacuum dried without drying. After drying, the workpiece can be taken out of the cleaning chamber (210).

3. The method for using the fully automatic hydrocarbon cleaning vacuum drying device according to claim 1, characterized in that: In step S9, after the drainage is completed, if the workpiece to be cleaned is a non-temperature-resistant workpiece, the cleaning chamber (210) after the drainage needs to be dried with hot air. After the drying is completed, the workpiece can be taken out of the cleaning chamber (210).

4. The method for using the fully automatic hydrocarbon cleaning vacuum drying device as claimed in claim 1, characterized in that: When cleaning a workpiece with non-high temperature grease, the pressure of the spray rough cleaning in the cleaning chamber (210) in S3 and the spray fine cleaning in the cleaning chamber (210) in S6 are both 2 Bar to 3 Bar; When cleaning a workpiece with high-temperature grease, the pressure in the spray rough cleaning in the cleaning chamber (210) in S3 and the pressure in the cleaning chamber (210) in S6 are both 3 Bar to 4 Bar; When cleaning a carbon-deposited workpiece, the time for the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 is 480S-600S. When cleaning a non-carbon-deposited workpiece, the time for the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 is 300S-450S.

5. The method for using the fully automatic hydrocarbon cleaning vacuum drying device as claimed in claim 1, characterized in that: The temperatures for the spray rough cleaning in S3, the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 are all 50°C±5°C, and the temperature in the cleaning chamber (210) for the spray fine cleaning in S6 is 60°C±5°C; The frequencies of the ultrasonic rough cleaning in S4 and the ultrasonic fine cleaning in S7 are both 28KHz-36KHz; The rotation angles of the spray rough washing in S3, the ultrasonic rough washing in S4 and the spray fine washing in S6 are all -15°±10° or 15°±10°, and the vacuum degree is -50Kpa±10Kpa.

6. The method for using the fully automatic hydrocarbon cleaning vacuum drying device as claimed in claim 3, characterized in that: When the cleaning temperature of the workpiece cannot exceed 80℃, the time of ultrasonic fine cleaning in S7 is 200S-280S, the time of hot air drying in S9 is 900S-1200S, and the temperature is 60℃±5℃; When the workpiece to be cleaned has no special pollutants or is cleaning a workpiece with high-temperature and high-grease impurities, the drying method in step S9 is steam bath washing, the steam bath washing temperature is 110°C ± 5°C, the time is 300S-380S, the vacuum degree is -50Kpa ± 10Kpa, and vacuum drying is required after steam bath washing, the vacuum drying time is 300S-380S, and the vacuum degree is -98Kpa ± 10Kpa; When the workpiece with carbon deposits needs to be cleaned, a rinsing pretreatment process needs to be added before S1. The drying method in step S9 is steam bath washing. The temperature of the steam bath washing is 110℃±5℃, the time is 420S-520S, and the vacuum degree is -50Kpa±10Kpa. Vacuum drying is required after the steam bath washing. The vacuum drying time is 300S-380S, and the vacuum degree is -98Kpa±10Kpa.

7. A fully automatic hydrocarbon cleaning vacuum drying device, comprising a fixed frame (100), wherein a cleaning system (200) is arranged inside the fixed frame (100), wherein the cleaning system (200) comprises a cleaning chamber (210) and a cleaning agent storage tank (220) connected to the cleaning chamber (210), wherein a cleaning solvent in the cleaning agent storage tank (220) is introduced into the cleaning chamber (210) to clean a workpiece to be cleaned; A distillation system (300), including a distillation tank (310), which is in communication with the cleaning chamber (210) and is used to distill the cleaning solvent after cleaning; A drying system (400), including a heat exchanger (410), is connected to the cleaning chamber (210) and is used to dry the cleaned workpiece; Features: A recovery system (500) is also provided in the fixed frame (100), and the recovery system (500) includes a heat recovery pipe (510), one end of which is connected to the heat exhaust port of the distillation tank (310), and the other end of which is connected to the cleaning chamber (210), and is used to introduce excess heat generated by distillation in the distillation tank (310) into the cleaning system (200).

8. The fully automatic hydrocarbon cleaning vacuum drying device according to claim 7, characterized in that: The distillation system (300) further comprises a vacuum pump (320) disposed outside the distillation tank (310) and connected thereto via a pipeline, wherein the vacuum pump (320) is connected to the cleaning chamber (210) via a pipeline; the distillation tank (310) is connected to the cleaning chamber (210) via a filter pump; A heat exchange valve is provided on the pipeline between the vacuum pump (320) and the distillation tank (310), the heat exchange valve is connected to the inlet of the heat exchange pipeline, and the outlet of the heat exchange pipeline is connected to the spray liquid inlet main pipe of the cleaning chamber (210).

9. The fully automatic hydrocarbon cleaning vacuum drying device according to claim 8, characterized in that: The heat exchanger (410) is in communication with the cleaning chamber (210) via a pipeline.

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