A multifunctional circulation cleaning system

Abstract

The present invention discloses a multifunctional circulating cleaning system for bidirectional cleaning of parts to be cleaned, comprising: an air source, a first gas-liquid separator and a second gas-liquid separator for storing cleaning agents, a first exhaust pipeline, a second exhaust pipeline, a pressure detection device, and a plurality of pipelines connecting the above components, and electromagnetic valves and controllers arranged on the pipelines. The present invention uses an air source as a power source, cooperates with a plurality of pipelines and electromagnetic valves to realize a reciprocating circulation type automatic cleaning process, is simple to operate, can clean thoroughly, and can also perform batch cleaning work, thereby solving the problem of recycling cleaning agents, effectively reducing cleaning costs, and truly realizing cleaning without liquid residue.

Description

Technical Field

[0001] The invention relates to the technical field of circulation cleaning, and more particularly to a multifunctional circulation cleaning system. Background Art

[0002] The overall operation process of the existing cleaning system has a low degree of automation, which is not conducive to batch cleaning of samples. In addition, the cleaning agent is prone to overflow during the cleaning process, resulting in a waste of cleaning agent and incomplete cleaning. At the same time, the cleaning agent is mixed with impurities after cleaning and cannot be reused, resulting in high cleaning costs. In addition, the cleaning agent remaining in the cleaned parts contains acetone and other harmful chemicals to the human body, which are easily volatilized and inhaled by the human body, which not only affects the use effect, but also causes damage to the health of personnel.

[0003] Therefore, how to provide a multifunctional circulation cleaning system is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0004] The present invention aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent, and provides a multifunctional circulating cleaning system which is environmentally friendly, cleans thoroughly and saves costs.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A multifunctional circulation cleaning system is used for bidirectional cleaning of a to-be-cleaned part, the to-be-cleaned part having a liquid inlet and a liquid outlet, comprising: an air source, the air source having a first outlet and a second outlet;

[0007] A first gas-liquid separator for storing cleaning agent, wherein the top of the first gas-liquid separator is connected to the first output port via a first pipeline, and the bottom is connected to the liquid inlet of the object to be cleaned via a second pipeline and a liquid inlet pipeline;

[0008] A second gas-liquid separator for storing cleaning agent, wherein the bottom of the second gas-liquid separator is connected to the liquid outlet of the to-be-cleaned object through a third pipeline and a liquid outlet pipeline, and the top of the second gas-liquid separator is connected to the second output port of the power source through a fourth pipeline;

[0009] a first exhaust pipeline, the first exhaust pipeline being arranged on the top of the first gas-liquid separator and being in communication with the interior thereof;

[0010] a second exhaust pipeline, the second exhaust pipeline being arranged at the top of the second gas-liquid separator and communicating with the interior thereof;

[0011] Solenoid valves, wherein a plurality of the solenoid valves are correspondingly arranged on the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the first exhaust pipeline and the second exhaust pipeline;

[0012] A pressure detection device, wherein the pressure detection components are respectively arranged on the first gas-liquid separator and the second gas-liquid separator;

[0013] A controller is communicatively connected with the gas source, the solenoid valve and the pressure detection device.

[0014] It can be seen from the above technical solution that compared with the prior art, the present invention uses an air source as the power, and preferably uses an inert gas that will not mix with the liquid. It is easy to store, environmentally friendly and pollution-free. It cooperates with multiple pipelines and solenoid valves to realize a reciprocating cycle automatic cleaning process. The operation is simple, batch cleaning work can be carried out, and the cleaning is thorough, which solves the problem of recycling of cleaning agents, effectively reduces cleaning costs, and truly realizes cleaning without liquid residue, which not only ensures the cleaning effect, but also increases the service life of the system.

[0015] Furthermore, it also includes a fifth pipeline, one end of which is connected to the liquid inlet pipeline, and the other end of which is connected to the sixth pipeline and the seventh pipeline respectively through a reversing valve, and the fifth pipeline, the sixth pipeline and the seventh pipeline are all provided with a solenoid valve for opening or cutting off the pipeline;

[0016] The other end of the sixth pipeline is connected to the first output port; the outlet end of the seventh pipeline is a free end.

[0017] The beneficial effect of adopting the above scheme is that after cleaning is completed, all solenoid valves are closed, and the solenoid valves of the sixth pipeline, the third pipeline and the second exhaust pipeline are opened. The gas is output through the gas source through the sixth pipeline and the liquid inlet pipeline in turn to discharge the cleaning agent remaining in the parts to be cleaned, and the cleaning agent is transported to the second gas-liquid separator through the liquid outlet pipeline and the third pipeline in turn. The gas is discharged into the air through the second exhaust pipeline to realize the recovery of the cleaning agent, ensure that the parts to be cleaned and the inside of the pipeline are clean, and improve the recovery rate of the cleaning agent.

[0018] Furthermore, it also includes an eighth pipeline, one end of which is connected to the liquid outlet pipeline, and the other end of which is respectively connected to a ninth pipeline and a tenth pipeline through a reversing valve, and the ninth pipeline and the tenth pipeline are both provided with a solenoid valve for opening or cutting off the pipeline;

[0019] The other end of the ninth pipeline is communicated with the second output port, and the outlet end of the tenth pipeline is a free end.

[0020] The beneficial effect of adopting the above scheme is that after cleaning is completed, all solenoid valves are closed, and the solenoid valves on the ninth pipeline, the second pipeline and the first exhaust pipeline are opened, and the gas is output through the gas source through the ninth pipeline and the liquid outlet pipeline in turn to discharge the cleaning agent remaining in the parts to be cleaned, and the cleaning agent is transported to the first gas-liquid separator through the liquid inlet pipeline and the second pipeline in turn, and the gas is discharged into the air through the first exhaust pipeline; the function of recovering the residual cleaning agent in the parts to be cleaned in the other direction can be realized, so that no matter whether the first gas-liquid separator or the second gas-liquid separator is the final cleaning agent collection container, the recovery path can be conveniently selected to recover the cleaning agent according to needs, thereby improving work efficiency.

[0021] Furthermore, the pressure detection device is also provided on the liquid inlet pipeline and the liquid outlet pipeline.

[0022] Furthermore, the tenth pipeline is provided with an air extraction device.

[0023] The beneficial effect of adopting the above scheme is that after the recovery is completed, all the solenoid valves are closed, the solenoid valve on the seventh pipeline is opened, and the residual gas inside the parts to be cleaned is discharged into the air through the liquid inlet pipeline, the fifth pipeline and the seventh pipeline; when the pressure detection device detects that the pressure on the liquid inlet pipeline is the same as the pressure on the liquid outlet pipeline, the solenoid valve on the seventh pipeline is closed, and the solenoid valve on the tenth pipeline is opened, and under the action of the vacuum pump, the residual gas in the parts to be cleaned is discharged into the air through the liquid outlet pipeline, the eighth pipeline and the tenth pipeline.

[0024] Furthermore, the first exhaust pipeline and the second exhaust pipeline are also provided with flow control valves, and the flow control valves are communicatively connected with the controller.

[0025] The beneficial effect of adopting the above scheme is that as the gas and the cleaning agent continue to enter the first gas-liquid separator or the second gas-liquid separator, the pressure in the separator will begin to increase. In the process of separating the gas and the cleaning agent and discharging them to the outside, the gas discharge rate is adjusted by the flow control valve so that the gas source pressure is always greater than the pressure in the separator, and the pressure in the separator is ensured to be higher than the saturated vapor pressure of the cleaning agent so that it will not be lost by boiling and evaporation, and the cleaning agent is ensured to enter the second gas-liquid separator or the first gas-liquid separator after cleaning.

[0026] Furthermore, the first gas-liquid separator and the second gas-liquid separator are both provided with a capacity detection device.

[0027] The beneficial effect of adopting the above scheme is that the cleaning agent capacity in the first gas-liquid separator and the second gas-liquid separator is further detected to ensure that the cleaning agent in the first gas-liquid separator or the second gas-liquid separator is used thoroughly during a single cleaning process, which is conducive to the next procedure.

[0028] Furthermore, it also includes an oil collection device, and the oil collection device includes: a collection tank;

[0029] a first recovery pipeline, wherein two ends of the first recovery pipeline are respectively connected to the collection tank and the first gas-liquid separator, and the first recovery pipeline is provided with the solenoid valve;

[0030] The second recovery pipeline, both ends of which are respectively connected to the collection tank and the second gas-liquid separator, and the solenoid valve is arranged on the second recovery pipeline.

[0031] The beneficial effect of adopting the above scheme is that after there is no cleaning agent or gas residue inside the cleaned part, all valves are closed, and then the solenoid valves of the first recovery pipeline and the second recovery pipeline are opened. The oil inside the separator is discharged into the oil collection tank under the action of air pressure, keeping the system clean.

[0032] Furthermore, the gas source is connected to a pressure controller for adjusting the output gas pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0034] Figure 1 The present invention is a structural principle diagram of a multifunctional circulating cleaning system.

[0035] Figure 2 This is a structural principle diagram of the present invention with a recycling function.

[0036] Figure 3 This is a structural principle diagram of the present invention having the oil recovery function.

[0037] in:

[0038] 1-gas source; 2-first gas-liquid separator; 3-second gas-liquid separator; 4-parts to be cleaned; 5-pressure detection device; 6-oil collection device; 11-pressure controller; 21-first pipeline; 22-second pipeline; 23-first exhaust pipeline; 24-fifth pipeline; 25-sixth pipeline; 26-seventh pipeline; 31-third pipeline; 32-fourth pipeline; 33-second exhaust pipeline; 34-eighth pipeline; 35-ninth pipeline; 36-tenth pipeline; 37-vacuum device; 41-liquid inlet pipeline; 42-liquid outlet pipeline; 61-collection tank; 62-first recovery pipeline; 63-second recovery pipeline. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] like Figure 1As shown, the embodiment of the present invention discloses a multifunctional circulation cleaning system for bidirectional cleaning of a to-be-cleaned part 4, the to-be-cleaned part 4 having a liquid inlet and a liquid outlet, including: a gas source 1, the gas source 1 is N2 stored in a steel cylinder, the pressure of the output gas is adjusted by a pressure controller 11, the model of the pressure controller 11 can be a TQA-441 pressure reducer, and is simultaneously connected to a first outlet and a second outlet;

[0045] A first gas-liquid separator 2 for storing cleaning agent, wherein the top of the first gas-liquid separator 2 is connected to the first output port via a first pipeline 21, and the bottom is connected to the liquid inlet of the to-be-cleaned part 4 via a second pipeline 22 and a liquid inlet pipeline 41 in sequence, and the first pipeline 21 and the second pipeline 22 are both equipped with manual regulating valves or solenoid valves to control the opening or closing of the pipelines;

[0046] A second gas-liquid separator 3 for storing cleaning agent after one cleaning, wherein the bottom of the second gas-liquid separator 3 is connected to the liquid outlet of the to-be-cleaned part 4 through a third pipeline 31 and a liquid outlet pipeline 42, and the top is connected to the second output port of the gas source 1 through a fourth pipeline 32, and the third pipeline 31 and the fourth pipeline 32 are both equipped with manual regulating valves or solenoid valves to control the opening or closing of the pipelines;

[0047] A first exhaust pipeline 23, the first exhaust pipeline 23 is arranged on the top of the first gas-liquid separator 2 and is connected to the interior thereof; a second exhaust pipeline 33, the second exhaust pipeline 33 is arranged on the top of the second gas-liquid separator 3 and is connected to the interior thereof, and a manual regulating valve or a solenoid valve is provided on the first exhaust pipeline 23 and the second exhaust pipeline 33; a pressure detection device 5, the pressure detection device 5 is respectively arranged on the first gas-liquid separator 2 and the second gas-liquid separator 3, and can be a pressure gauge or a pressure sensor for detecting the pressure value in the container; and a controller communicatively connected to the gas source 1, the above-mentioned solenoid valve and the pressure detection device 5, and the automatic operation of the cleaning process is realized through the controller.

[0048] Advantageously, a flow control valve is further provided in the first exhaust pipeline 23 and the second exhaust pipeline 33, and the flow control valve is communicatively connected with the controller; as N2 enters the pipeline, the cleaning agent is pushed to flow in the pipeline under the action of air pressure, and the to-be-cleaned part 4 takes the automobile air conditioner as an example. When adopting the system, it is not necessary to disassemble various parts of the automobile air conditioner and clean them one by one. It is only necessary to connect the system with the inlet and outlet of the automobile air conditioner pipeline, specifically, the liquid inlet pipeline of the system is connected with the inlet of the automobile air conditioner pipeline, and the liquid outlet pipeline is connected with the outlet of the automobile air conditioner pipeline, and then start the cleaning work, which reduces the workload;

[0049] After cleaning is completed, as N2 and the cleaning agent continue to enter the first gas-liquid separator or the second gas-liquid separator, the pressure in the separator will gradually increase. In the process of separating the gas and the cleaning agent and discharging them to the outside, the flow control valve is controlled by the controller to constantly change the gas discharge rate so that the gas source working pressure value P is always greater than the pressure P2 in the separator where the cleaning agent gathers after cleaning, thereby ensuring that all the cleaning agent enters the second gas-liquid separator or the first gas-liquid separator after cleaning.

[0050] In some embodiments, Figure 2 As shown, when the cleaning is completed, all the cleaning agents are collected in the second gas-liquid separator. In order to ensure that there is no liquid residue in the to-be-cleaned part 4, a fifth pipeline 24 is further provided. One end of the fifth pipeline 24 can be connected to the second pipeline 22 and the liquid inlet pipeline 41 respectively through a three-way valve, and the other end is connected to the sixth pipeline 25 and the seventh pipeline 26 respectively through a reversing valve. The reversing valve is a three-way valve. The sixth pipeline 25 and the seventh pipeline 26 are both provided with a solenoid valve for opening or cutting off the pipeline; the other end of the sixth pipeline 25 can also be connected to the air inlet end of the first pipeline 21 and the first output port of the air source 1 through a three-way valve, and the outlet end of the seventh pipeline 26 is a free end;

[0051] The operation process is as follows: after cleaning is completed, all solenoid valves are closed, and the solenoid valves of the sixth pipeline, the third pipeline and the second exhaust pipeline and the three-way valve at the connection are opened. The N2 is output through the gas source through the sixth pipeline and the liquid inlet pipeline in turn to discharge the cleaning agent remaining in the parts to be cleaned, and the cleaning agent is transported to the second gas-liquid separator through the liquid outlet pipeline and the third pipeline in turn. The N2 is discharged into the air through the second exhaust pipeline to realize the positive recovery of the cleaning agent, ensure that the parts to be cleaned and the inside of the pipeline are clean and free of liquid residue, and improve the recovery rate of the cleaning agent.

[0052] Advantageously, if all the cleaning agents are collected in the first gas-liquid separator after cleaning, in order to ensure that there is no liquid residue in the to-be-cleaned part 4, an eighth pipeline 34 is further provided, one end of the eighth pipeline 34 can be respectively connected to the liquid outlet pipeline 42 and the third pipeline 31 through a three-way valve, and the other end is respectively connected to the ninth pipeline 35 and the tenth pipeline 36 through a reversing valve, the reversing valve is also a three-way valve, and the ninth pipeline 35 and the tenth pipeline 36 are both provided with a solenoid valve for opening or cutting off the pipeline; the other end of the ninth pipeline 35 is connected to the air inlet end of the fourth pipeline 32 and the second output port of the air source 1 through a three-way valve, and the outlet end of the tenth pipeline 36 is a free end;

[0053] Similar to the above liquid recovery process: after cleaning, close all solenoid valves, open the solenoid valves and three-way valves on the ninth pipeline, the second pipeline and the first exhaust pipeline, and output N2 through the gas source through the ninth pipeline and the liquid outlet pipeline in turn to discharge the cleaning agent remaining in the parts to be cleaned, and transport the cleaning agent to the first gas-liquid separator through the liquid inlet pipeline and the second pipeline in turn, and N2 is discharged into the air through the first exhaust pipeline to realize the recovery of the cleaning agent in another direction.

[0054] In some embodiments, a pressure detection device 5 is also provided on the liquid inlet pipeline 41 and the liquid outlet pipeline 42, which may be a pressure gauge, and an exhaust device 37 is provided on the tenth pipeline 36; the exhaust device 37 may be a vacuum pump to achieve the treatment of residual gas in the system pipeline; its operation is: after the recovery of the cleaning agent is completed, all valves are closed and the exhaust process is started: the solenoid valve on the seventh pipeline is opened, and the residual gas inside the part to be cleaned is discharged into the air through the liquid inlet pipeline, the fifth pipeline and the seventh pipeline; when the pressure detection device detects that the pressure on the liquid inlet pipeline is the same as the pressure on the liquid outlet pipeline, the solenoid valve on the seventh pipeline is closed, and the solenoid valve on the tenth pipeline is opened, and under the action of the vacuum pump, the N2 remaining in the part to be cleaned is discharged into the air through the liquid outlet pipeline, the eighth pipeline and the tenth pipeline.

[0055] In some embodiments, Figure 3 As shown, in order to keep the separator clean, it also includes an oil collection device 6, which includes: a collection tank 61, a first recovery pipeline 62 and a second recovery pipeline 63; the two ends of the first recovery pipeline 62 are respectively connected to the collection tank 61 and the first gas-liquid separator 2, and the first recovery pipeline 62 is provided with a solenoid valve, and the two ends of the second recovery pipeline 63 are respectively connected to the collection tank 61 and the second gas-liquid separator 3, and the second recovery pipeline 63 is provided with a solenoid valve; its operation is: when the above processes are completed, all valves are closed, and the solenoid valves of the first recovery pipeline 62 and the second recovery pipeline 63 are opened, and the oil inside the separator is discharged into the oil collection device 6 under the action of air pressure.

[0056] More advantageously, the first gas-liquid separator 2 and the second gas-liquid separator 3 are both provided with a capacity detection device, which may be an electronic scale arranged at the bottom of the separator or an internal electronic liquid level meter; the capacity of the cleaning agent in the first gas-liquid separator and the second gas-liquid separator is further detected to ensure that the cleaning agent in the first gas-liquid separator or the second gas-liquid separator is thoroughly used during a single cleaning process, which is conducive to the implementation of the next procedure.

[0057] Specifically, the present invention can realize the following functions (from left to right is positive, from right to left is reverse, the pressure values ​​P in different functions are not necessarily the same, and the same is true for P1 and P2):

[0058] (1) Forward cleaning: Turn on the gas source and, under the regulation of the pressure controller, output the most suitable dynamic air pressure value P under the current working state. Open the first pipeline N2 to enter the first gas-liquid separator. The pressure P1 in the first gas-liquid separator gradually rises and eventually equals the working pressure P. Open the second pipeline. Under the action of pressure, the cleaning agent in the first gas-liquid separator passes through the second pipeline and the liquid inlet pipeline in turn from the liquid inlet into the part to be cleaned to clean the inside. Then open the third pipeline. The cleaned liquid passes through the liquid outlet pipeline and the third pipeline into the second gas-liquid separator. As the cleaning agent in the second gas-liquid separator increases, the internal pressure value P2 gradually increases. By observing the pressure gauge of the second gas-liquid separator, when the pressure value When P2 is greater than the saturated vapor pressure of the cleaning agent, and P2 is maintained at the set value, the solenoid valve on the second exhaust pipeline is opened to start exhausting, and the gas exhaust rate is adjusted by the flow control valve to control the gas pressure value P2 in the second gas-liquid separator to always be greater than the saturated vapor pressure of the cleaning agent (when P2 is higher than the saturated vapor pressure at the current temperature, the cleaning agent cannot boil, thereby not causing boiling and evaporation losses of the cleaning agent, and the gas discharged after gas-liquid separation is all N2), and P2 is always smaller than P1 (P), and the internal liquid capacity is constantly detected by the capacity detection device set in the first gas-liquid separator to ensure that the cleaning agent in the first gas-liquid separator enters the second gas-liquid separator after cleaning the parts to be cleaned.

[0059] (2) Reverse cleaning: When the forward cleaning is completed, the gas source is turned on and the pressure controller is adjusted to output the most suitable dynamic air pressure value P under the current working state. The gas from the fourth pipeline is opened to enter the second gas-liquid separator. The pressure P2 in the second gas-liquid separator gradually rises and eventually equals the working pressure P. The third pipeline is opened. Under the action of pressure, the cleaning agent in the second gas-liquid separator passes through the third pipeline and the liquid outlet pipeline in turn and enters the part to be cleaned from the liquid outlet to clean the inside. Then the second pipeline is opened. The cleaned liquid passes through the liquid inlet pipeline and the second pipeline and enters the first gas-liquid separator. As the amount of cleaning agent in the first gas-liquid separator increases, the internal pressure value P1 gradually increases. By observing the pressure gauge of the first gas-liquid separator, the pressure value P2 in the first gas-liquid separator increases. When the pressure value P1 is greater than the saturated vapor pressure of the cleaning agent, and P1 is maintained at the set value, the solenoid valve on the first exhaust pipeline is opened to start exhausting, and the gas exhaust rate is adjusted by the flow control valve to control the gas pressure value P1 in the first gas-liquid separator to always be greater than the saturated vapor pressure of the cleaning agent (when P1 is higher than the saturated vapor pressure at the current temperature, the cleaning agent cannot boil, thereby not causing boiling and evaporation losses of the cleaning agent, and the gas discharged after gas-liquid separation is all N2), and P1 is always smaller than P2 (P), and the internal liquid capacity is constantly detected by the capacity detection device set in the second gas-liquid separator to ensure that the cleaning agent in the second gas-liquid separator enters the first gas-liquid separator after cleaning the parts to be cleaned.

[0060] (3) Forward liquid recovery: After cleaning, close all valves, open the gas source and output the most suitable power gas pressure value P under the regulation of the pressure controller under the current working state, open the solenoid valves of the sixth pipeline, the third pipeline and the second exhaust pipeline in turn, and the output gas passes through the sixth pipeline and the liquid inlet pipeline in turn to discharge the cleaning agent remaining in the parts to be cleaned from the liquid outlet, and then transport the cleaning agent to the second gas-liquid separator through the liquid outlet pipeline and the third pipeline in turn. Under the pressure condition that the cleaning agent cannot boil, N2 is discharged into the air through the second exhaust pipeline to realize the recovery of the cleaning agent. The N2 emission rate is adjusted by the flow control valve to keep P2 always less than P.

[0061] (4) Reverse liquid recovery: After cleaning, close all solenoid valves, open the gas source and output the most suitable power pressure value P under the current working state under the regulation of the pressure controller, open the solenoid valves on the ninth pipeline, the second pipeline and the first exhaust pipeline, and output gas through the ninth pipeline and the liquid outlet pipeline in turn to discharge the cleaning agent remaining in the parts to be cleaned, and then transport the cleaning agent to the first gas-liquid separator through the liquid inlet pipeline and the second pipeline in turn. Under the pressure condition where the cleaning agent cannot boil, adjust the N2 emission rate through the flow control valve to keep P1 always less than P, and N2 is finally discharged into the air through the first exhaust pipeline.

[0062] (5) Vacuuming: After the liquid recovery is completed, close the gas source and all valves, open the solenoid valve on the seventh pipeline, and discharge the residual gas inside the cleaned part through the liquid inlet pipeline, the fifth pipeline and the seventh pipeline into the air; when the pressure gauge detects that the pressure on the liquid inlet pipeline is the same as the pressure on the liquid outlet pipeline, close the solenoid valve on the seventh pipeline, open the solenoid valve on the tenth pipeline, and under the action of the vacuum pump suction, discharge the gas remaining in the cleaned part through the liquid outlet pipeline, the eighth pipeline and the tenth pipeline into the air.

[0063] (6) Oil and dirt discharge: After there is no cleaning agent or gas residue inside the cleaned part, close all valves and then open the solenoid valves of the first recovery pipeline and the second recovery pipeline. The oil and dirt inside the separator are discharged into the oil collection device under the action of air pressure.

[0064] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0065] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multifunctional circulating cleaning system for bidirectional cleaning of a part (4) to be cleaned, wherein the part (4) to be cleaned has a liquid inlet and a liquid outlet, and is characterized in that: include: An air source (1), the air source (1) having a first outlet and a second outlet; A first gas-liquid separator (2) for storing cleaning agent, wherein the top of the first gas-liquid separator (2) is connected to the first output port via a first pipeline (21), and the bottom is connected to the liquid inlet of the object to be cleaned (4) via a second pipeline (22) and a liquid inlet pipeline (41); a second gas-liquid separator (3) for storing cleaning agent, wherein the bottom of the second gas-liquid separator (3) is connected to the liquid outlet of the object to be cleaned (4) through a third pipeline (31) and a liquid outlet pipeline (42), and the top of the second gas-liquid separator (3) is connected to the second output port of the gas source (1) through a fourth pipeline (32); A first exhaust pipeline (23), the first exhaust pipeline (23) being arranged at the top of the first gas-liquid separator (2) and being in communication with the interior thereof; a second exhaust pipeline (33), the second exhaust pipeline (33) being arranged at the top of the second gas-liquid separator (3) and being in communication with the interior thereof; Solenoid valves, wherein the plurality of solenoid valves are correspondingly arranged on the first pipeline (21), the second pipeline (22), the third pipeline (31), the fourth pipeline (32), the first exhaust pipeline (23) and the second exhaust pipeline (33); A pressure detection device (5), wherein the pressure detection device (5) is respectively arranged on the first gas-liquid separator (2) and the second gas-liquid separator (3); A controller, the controller being communicatively connected with the gas source (1), the solenoid valve and the pressure detection device (5); a fifth pipeline (24), one end of the fifth pipeline being in communication with the liquid inlet pipeline (41), and the other end of the fifth pipeline being respectively connected to the sixth pipeline (25) and the seventh pipeline (26) via reversing valves, and the fifth pipeline (24), the sixth pipeline (25) and the seventh pipeline (26) are all provided with solenoid valves for opening or cutting off the pipelines; The other end of the sixth pipeline (25) is connected to the first output port; the outlet end of the seventh pipeline (26) is a free end; an eighth pipeline (34), one end of the eighth pipeline (34) being in communication with the liquid outlet pipeline (42), and the other end of the eighth pipeline (34) being respectively connected to a ninth pipeline (35) and a tenth pipeline (36) via a reversing valve, and the ninth pipeline (35) and the tenth pipeline (36) are both provided with a solenoid valve for opening or cutting off the pipeline; The other end of the ninth pipeline (35) is in communication with the second output port, and the outlet end of the tenth pipeline (36) is a free end.

2. A multifunctional circulation cleaning system according to claim 1, characterized in that: The pressure detection device (5) is also provided on the liquid inlet pipeline (41) and the liquid outlet pipeline (42).

3. A multifunctional circulation cleaning system according to claim 1, characterized in that: The tenth pipeline (36) is provided with an air extraction device (37).

4. A multifunctional circulation cleaning system according to claim 1, characterized in that: The first exhaust pipeline (23) and the second exhaust pipeline (33) are also provided with flow control valves, and the flow control valves are communicatively connected with the controller.

5. A multifunctional circulation cleaning system according to claim 1, characterized in that: The first gas-liquid separator (2) and the second gas-liquid separator (3) are both provided with a capacity detection device.

6. A multifunctional circulation cleaning system according to claim 1, characterized in that: It also includes an oil collection device (6), wherein the oil collection device (6) includes: a collection tank (61); a first recovery pipeline (62), wherein two ends of the first recovery pipeline (62) are respectively connected to the collection tank (61) and the first gas-liquid separator (2), and the first recovery pipeline (62) is provided with the solenoid valve; A second recovery pipeline (63), wherein two ends of the second recovery pipeline (63) are respectively connected to the collection tank (61) and the second gas-liquid separator (3), and the solenoid valve is provided on the second recovery pipeline (63).

7. A multifunctional circulation cleaning system according to claim 1, characterized in that: The gas source (1) is connected to a pressure controller (11) for adjusting the output gas pressure.

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