Reduced pressure boiling cleaning device and cleaning method thereof

Abstract

This invention provides a depressurized boiling cleaning device and method, comprising a frame, a blind cavity cleaning component, a sealing door, a heating component, a cleaning fluid treatment component, and a vacuum acquisition component. The blind cavity cleaning component is disposed on the frame, with an opening on one side to accommodate the blind cavity product. The sealing door is hinged to the blind cavity cleaning component and seals the opening. The heating component is sleeved on the outside of the blind cavity cleaning component. The cleaning fluid treatment component connects the upper and lower parts of the blind cavity cleaning component, with the cleaning fluid injected from the top and discharged from the bottom. The vacuum acquisition component connects to the upper part of the blind cavity cleaning component and evacuates the component. This invention solves the problem that the cleaning fluid is difficult to penetrate deep into the blind cavity and cannot effectively carry away contaminants, achieving effective cleaning and drying of the inner wall surface of blind cavity products with a single, narrow inlet.

Description

Technical Field

[0001] This invention belongs to the field of cleaning technology for spacecraft fluid heat transfer blind cavity products, specifically, it relates to a depressurized boiling cleaning device and its cleaning method. Background Technology

[0002] During the manufacturing process of spacecraft fluid heat transfer blind cavity products, a large amount of dust and metal particles from the manufacturing process adhere to the inner wall surface of the blind cavity. Spacecraft fluid heat transfer products are highly sensitive to particulate contaminants, especially pump components, where the presence of particulate contaminants can significantly impact their lifespan and reliability. Therefore, before integrating fluid heat transfer products, it is essential to thoroughly clean the piping, channels, and blind cavity components.

[0003] Patent document CN119175255B discloses an ultrasonic cleaning device and method for the inner cavity of an aero-engine blade; it can generate ultrasonic vibration on the blade and excite cavitation and abrasive in the blade's inner cavity, achieving efficient and high-quality cleaning of deposits in the blade's inner cavity. The technical solution includes: an ultrasonic generator, a fixed end, an ultrasonic excitation mechanism, a first tool head, and a second tool head. The fixed end is fixed relative to the ground. An ultrasonic excitation mechanism is provided at a position opposite to the fixed end and is connected to the ultrasonic generator. The first tool head includes a first contact surface that contacts the surface of the workpiece to be cleaned at a corresponding position, and the first tool head is fixed to the fixed end or the ultrasonic excitation mechanism. The second tool head includes a second contact surface that contacts the surface of the workpiece to be cleaned at a corresponding position, and the first and second tool heads clamp the workpiece to be cleaned in the middle; the second tool head is fixed to the fixed end or the ultrasonic excitation mechanism.

[0004] However, the ultrasonic and jet cleaning equipment currently used in patent document CN119175255B cannot effectively clean the inner wall surface of blind cavity products with a single, narrow inlet. It suffers from difficulties in the entry and exit of cleaning fluid into the blind cavity, making it difficult to remove internal contaminants. Furthermore, current cleaning equipment cannot meet the specific requirements of blind cavity products for cleaning pressure and temperature. Additionally, the interior of blind cavity products is difficult to dry, requiring specialized vacuum drying equipment, which can easily lead to secondary contamination and resource waste during post-cleaning transport and drying.

[0005] To address the challenges of cleaning fluids penetrating deep into blind cavities and effectively carrying away contaminants, thus hindering the effective cleaning and drying of the inner walls of products with a single, narrow inlet, this invention presents a depressurized boiling cleaning device that solves the aforementioned problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a depressurized boiling cleaning device and its cleaning method.

[0007] A vacuum boiling cleaning device according to the present invention includes: a frame, a blind cavity cleaning component, a sealing door, a heating component, a cleaning fluid treatment component, and a vacuum acquisition component; the blind cavity cleaning component is disposed on the frame, and a blind cavity product is accommodated inside an opening on one side of the blind cavity cleaning component; the sealing door is hinged to the blind cavity cleaning component and seals the opening of the blind cavity cleaning component; the heating component is sleeved on the outside of the blind cavity cleaning component; the cleaning fluid treatment component is connected to the upper and lower parts of the blind cavity cleaning component, and the cleaning fluid is injected into the blind cavity cleaning component from the top and discharged from the bottom; the vacuum acquisition component is connected to the upper part of the blind cavity cleaning component and evacuates the blind cavity cleaning component.

[0008] Preferably, the frame is a support structure consisting of horizontal and vertical steel frames that are cross-lapped and fixed, with no enclosed surface.

[0009] Preferably, the blind cavity cleaning assembly includes a cleaning cavity, a blind cavity product fixing bracket, a telescopic jet splitter, and an ultrasonic generator; The cleaning chamber is installed on the upper part of the frame, with an opening on the front side wall; the blind cavity product fixing bracket is fixedly installed inside the cleaning chamber; the telescopic jet diverter is set at the bottom of the cleaning chamber, with its top end rising and falling inside the blind hole of the blind cavity product; the ultrasonic generator is fixed on the outer side of the bottom of the cleaning chamber.

[0010] Preferably, the telescopic jet diverter includes a riser, a telescopic rod, and a guide surface. The riser is installed at the bottom of the cleaning chamber, and the telescopic rod is connected to the riser in a lifting manner. The guide surface is fixed to the top of the telescopic rod and extends horizontally. The telescopic rod passes through the fixing bracket of the blind cavity product and is accommodated inside the blind hole of the blind cavity product.

[0011] Preferably, the sealing door is rotatably connected to one side of the opening of the cleaning chamber, with the other end extending towards the opposite side. The surface of the sealing door abuts against and seals the opening of the cleaning chamber. The rotation axis of the sealing door is coplanar with both the sealing door and the opening plane of the cleaning chamber, and the sealing door rotates along the axis to open. A pressure sealing safety device is provided on the sealing door, which includes a pin and a connecting rod. The pin is rotatably connected to the frame, and the pin is circumferentially arranged along the opening direction of the cleaning chamber. The connecting rod is fixed to the pin and extends radially along the pin, abutting against the side wall of the sealing door located on the opposite side of the cleaning chamber.

[0012] Preferably, the heating assembly includes a steam chamber, a steam generator, a water pump, and a control valve. The steam chamber is fitted onto the outer wall of the cleaning chamber. The steam generator is located on one side of the steam chamber and consists of a heating tube, a metal shell, and a temperature sensor. The heating tube and the temperature sensor are located inside the metal shell. The shell has a water inlet and an air outlet. The air outlet is connected to the steam chamber. The water inlet of the shell is connected to the water pump outlet. The water pump is fixed to one side of the steam chamber, and the control valve is located at the water pump outlet.

[0013] Preferably, the cleaning fluid treatment assembly includes a waste liquid pipe, a filter, a wastewater pump, a cleaning fluid storage tank, a sealing cap, a water level sensor, a liquid particle size detection sensor, a water pump, and a water inlet pipe; The waste liquid pipe is installed at the bottom of the cleaning chamber and connected to it; the filter inlet is connected to the waste liquid pipe, and the filter is located below the bottom of the cleaning chamber; the wastewater pump inlet is connected to the filter outlet; the cleaning liquid storage tank is connected to the wastewater pump outlet; the cleaning liquid storage tank has an opening at the top, and a sealing cap is connected by threads to seal the opening at the top of the cleaning liquid storage tank; the water level sensor and the liquid particle size detection sensor are installed at the top of the cleaning liquid storage tank and extend to the inside of the cleaning liquid storage tank; the water pump is located on one side of the cleaning liquid storage tank, the water pump inlet is connected to the bottom inside of the cleaning liquid storage tank, the water pump outlet is connected to the inlet pipe, and the inlet pipe extends upward to the top inside the cleaning chamber.

[0014] Preferably, the vacuum acquisition component includes a mechanical pump, a molecular pump, and a vacuum line. One end of the vacuum line is connected to the top of the side wall of the cleaning chamber, and the other end is connected to the inlet of the molecular pump. The molecular pump is mounted on the frame, and its outlet is connected to the mechanical pump. The mechanical pump is mounted on the frame and connected to the molecular pump for pre-vacuuming the cleaning chamber.

[0015] Preferably, a power distribution box and a control equipment box are provided on the frame, and a control panel is provided on the cleaning chamber for controlling the cleaning process. The blind cavity cleaning component, control equipment box, control panel, heating component, cleaning fluid treatment component, and vacuum acquisition component are all electrically connected to the power distribution box; the blind cavity cleaning component, control panel, heating component, cleaning fluid treatment component, and vacuum acquisition component are all electrically connected to the control equipment box.

[0016] A cleaning method for a vacuum boiling cleaning device according to the present invention includes the following steps: Step S1: First, the vacuum obtaining component evacuates the inside of the cleaning chamber. After reaching the vacuum level, the water pump in the cleaning fluid treatment component pumps the filtered clean cleaning fluid in the cleaning fluid storage tank into the cleaning chamber. After reaching the water level, the pipeline valve and water pump are closed. Step S2: Start the ultrasonic generator to perform ultrasonic cleaning on the blind cavity product. After the ultrasonic cleaning is completed, the water pump on the heating component supplies the required liquid to the steam generator. The steam generated by the steam generator enters the steam chamber outside the cleaning chamber through the pipe to heat the entire cleaning chamber. After the temperature is reached in the cleaning chamber, due to the vacuum, the cleaning liquid boils at a temperature lower than the boiling point of normal pressure. A large number of bubbles generated in the cleaning liquid pool converge in the blind cavity, completely expelling the cleaning liquid and contaminants from the inside of the blind cavity. Step S3: Then control the vacuum acquisition component to restore the pressure inside the cleaning chamber to atmospheric pressure. The pressure difference between the inside and outside of the blind cavity forces the cleaning fluid to re-enter the blind cavity in the form of a jet. Under the action of the telescopic jet splitter, the jet changes direction to clean the axial inner wall of the blind cavity. Finally, the cleaning fluid fills the blind cavity again. Repeat steps S1, S2, and S3 as a single cycle of depressurized boiling cleaning; the depressurized boiling cleaning cycle is performed in multiple alternations with ultrasonic cleaning according to the cleaning program settings. In different depressurized boiling cleaning cycles, the extension height of the telescopic jet distributor is adjusted to achieve effective cleaning of the inner wall of the blind cavity at all depths. Step S4: After the cleaning process is completed, the vacuum acquisition component restores the pressure in the cleaning chamber to atmospheric pressure, and the waste liquid is discharged into the cleaning liquid treatment component through the waste liquid pipe for filtration and recycling. Step S5: Finally, restart the vacuum assembly and heating assembly to bring the cleaning chamber to a certain vacuum level and heat it to a certain temperature for vacuum drying of the product.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up heating components, high-precision control of the temperature inside the cleaning chamber can be achieved. By controlling the steam generator, temperature regulation can be achieved in different processes of cleaning and drying.

[0018] 2. By setting up a vacuum assembly, a vacuum level is achieved in the cleaning chamber, so as to clean the inside of the blind cavity product using the principle of depressurized boiling cleaning. At the same time, the high vacuum liquid in the drying process after cleaning can ensure that the inside of the blind cavity product is thoroughly dried.

[0019] 3. By incorporating a blind cavity cleaning component, the inner walls of the blind cavity product are cleaned. The blind cavity product fixing bracket allows for simultaneous cleaning of blind cavities at different depths, saving workload and resources. An ultrasonic generator positioned at the bottom of the cleaning chamber effectively transmits ultrasonic energy to the interior of the blind cavity product, achieving the cleaning purpose. A telescopic jet splitter automatically changes the jet direction and height within the blind cavity, enabling effective cleaning of the inner wall surfaces at different radial depths.

[0020] 4. By installing a cleaning fluid treatment component, the waste fluid after cleaning the blind cavity can be recovered and filtered, and the filtered clean cleaning fluid can be stored in a cleaning fluid storage tank for use in the next cleaning. Sensors in the cleaning fluid storage tank monitor the cleaning fluid level and cleanliness, allowing operators to replenish the cleaning fluid in a timely manner and perform secondary filtration on cleaning fluid that does not meet the cleanliness standards. This effectively reduces the waste of cleaning fluid resources and facilitates operators in monitoring the cleaning effect of the blind cavity and sampling for excess contaminants. Attached Figure Description

[0021] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the back of the overall structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the blind cavity cleaning component of the present invention.

[0024] Figure 4 This is a schematic diagram of the heating component of the present invention.

[0025] Figure 5 This is a schematic diagram of the cleaning fluid treatment component of the present invention.

[0026] Figure 6 This is a schematic diagram of the vacuum acquisition component of the present invention.

[0027] Figure 7 This is a schematic diagram of the telescopic jet splitter of the present invention.

[0028] The diagram shows: 1. Frame; 2. Blind cavity cleaning assembly; 21. Cleaning chamber; 22. Blind cavity product fixing bracket; 23. Telescopic jet distributor; 24. Ultrasonic generator; 3. Distribution box; 4. Control equipment box; 5. Control panel; 6. Sealing door; 7. Safety device; 8. Heating assembly; 81. Steam chamber; 82. Steam generator; 83. Water pump; 84. Control valve; 9. Cleaning fluid treatment assembly; 91. Waste liquid pipe; 92. Filter; 93. Wastewater pump; 94. Cleaning fluid storage tank; 95. Sealing cap; 96. Water level sensor; 97. Liquid particle size detection sensor; 98. Water pump; 99. Water inlet pipe; 10. Vacuum acquisition assembly; 101. Mechanical pump; 102. Molecular pump; 103. Vacuum extraction line. Detailed Implementation

[0029] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0030] like Figures 1-7 As shown, a depressurized boiling cleaning device includes: a frame 1, a blind cavity cleaning assembly 2, a sealing door 6, a heating assembly 8, a cleaning fluid treatment assembly 9, and a vacuum acquisition assembly 10. The blind cavity cleaning assembly 2 is disposed on the frame 1, and the blind cavity product is accommodated inside an opening on one side of the assembly. The sealing door 6 is hinged to the blind cavity cleaning assembly 2, sealing the opening of the assembly. The heating assembly 8 is sleeved on the outside of the blind cavity cleaning assembly 2. The cleaning fluid treatment assembly 9 connects the upper and lower parts of the blind cavity cleaning assembly 2, with cleaning fluid injected from the top and discharged from the bottom. The vacuum acquisition assembly 10 connects to the upper part of the blind cavity cleaning assembly 2 and evacuates the assembly.

[0031] The working principle of this application is as follows: the blind cavity product is placed into the blind cavity cleaning component 2, the sealing door 6 is closed, and the seal is locked by the safety device 7. First, the vacuum obtaining component 10 evacuates the blind cavity cleaning component 2, and then the cleaning fluid is injected into it through the cleaning fluid treatment component 9. The heating component 8 is activated to heat the blind cavity cleaning component 2, causing the cleaning fluid in the vacuum environment to depressurize and boil. Cleaning is achieved by using bubble aggregation and pressure difference to expel contaminants. After cleaning, the vacuum obtaining component 10 restores the internal pressure, and the waste liquid is treated by the cleaning fluid treatment component 9. Finally, the vacuum obtaining component 10 and the heating component 8 work together to complete the vacuum drying of the product.

[0032] Specifically, frame 1 is a support structure with no enclosed surface, consisting of horizontally and vertically interlocking steel frames. The blind cavity cleaning assembly 2 includes a cleaning chamber 21, a blind cavity product fixing bracket 22, a telescopic jet diverter 23, and an ultrasonic generator 24. The cleaning chamber 21 is installed on the upper part of frame 1, with an opening on its front-facing side wall. The blind cavity product fixing bracket 22 is fixedly installed inside the cleaning chamber 21. The telescopic jet diverter 23 is located at the bottom of the cleaning chamber 21, with its top end rising and falling inside the blind hole of the blind cavity product. The ultrasonic generator 24 is fixed to the outer bottom of the cleaning chamber 21.

[0033] The telescopic jet diverter 23 includes a riser, a telescopic rod, and a guide surface. The riser is installed at the bottom of the cleaning chamber 21, and the telescopic rod is connected to the riser for lifting. The guide surface is fixed to the top of the telescopic rod and extends horizontally. The telescopic rod passes through the blind cavity product fixing bracket 22 and is accommodated inside the blind hole of the blind cavity product.

[0034] A sealing door 6 is rotatably connected to one side of the opening of the cleaning chamber 21, with the other end extending towards the opposite side. The surface of the sealing door 6 abuts against and seals the opening of the cleaning chamber 21. The rotation axis of the sealing door 6 is coplanar with both the plane of the sealing door 6 and the plane of the opening of the cleaning chamber 21, allowing the sealing door 6 to rotate and open. A pressure-sealing safety device 7 is provided on the sealing door 6. The safety device 7 is located on the opposite side of the opening of the cleaning chamber 21, at the rotatable connection point of the sealing door 6, and abuts against the side wall of the sealing door 6 on the opposite side of the cleaning chamber 21 along the circumferential direction of the rotation axis of the sealing door 6.

[0035] The safety device 7 includes a pivot pin and an abutment rod. The pivot pin is rotatably connected to the frame 1 and is circumferentially arranged along the opening direction of the cleaning chamber 21. The abutment rod is fixed to the pivot pin and extends radially along the pivot pin. When the abutment rod is rotated to the vertical position, it is misaligned with the sealing door 6. When the abutment rod is rotated to the horizontal position, it abuts against the side wall of the sealing door 6 located on the opposite side of the cleaning chamber 21.

[0036] The heating assembly 8 includes a steam chamber 81, a steam generator 82, a water pump 83, and a control valve 84. The steam chamber 81 is fitted onto the outer wall of the cleaning chamber 21. The steam generator 82 is located on one side of the steam chamber 81 and consists of a heating tube, a metal casing, and a temperature sensor. The heating tube and temperature sensor are located inside the metal casing. The heating tube converts electrical energy into heat energy, rapidly heating cold water to a boiling state to generate steam. The casing has a water inlet and a steam outlet. The steam outlet is connected to the steam chamber 81, and the water inlet of the casing is connected to the outlet of the water pump 83. The water pump 83 is fixed to one side of the steam chamber 81, and the control valve 84 is located at the outlet of the water pump 83.

[0037] The cleaning fluid treatment assembly 9 includes a waste liquid pipe 91, a filter 92, a wastewater pump 93, a cleaning fluid storage tank 94, a sealing cap 95, a water level sensor 96, a liquid particle size detection sensor 97, a water pump 98, and an inlet pipe 99. The waste liquid pipe 91 is installed at the bottom of the cleaning chamber 21 and communicates with it, and is used to discharge the waste liquid generated by the cleaning chamber. The inlet of filter 92 is connected to waste liquid pipe 91, and filter 92 is located below the bottom of cleaning chamber 21 to intercept solid impurities in waste liquid; the inlet of waste water pump 93 is connected to the outlet of filter 92 to pump the filtered waste liquid; the cleaning liquid storage tank 94 is connected to the outlet of waste water pump 93 to store the filtered recovery liquid; the top of cleaning liquid storage tank 94 has an opening, and sealing cap 95 is connected by threads to seal the top opening of cleaning liquid storage tank 94; water level sensor 96 and liquid particle size detection sensor 97 are installed on the top of cleaning liquid storage tank 94 and extend to the inside of cleaning liquid storage tank 94 to monitor the cleanliness of recovery liquid; water pump 98 is located on one side of cleaning liquid storage tank 94, the inlet of water pump 98 is connected to the bottom inside of cleaning liquid storage tank 94, and the outlet of water pump 98 is connected to inlet pipe 99, which extends upward to the top inside of cleaning chamber 21 to pressurize and transport recovery liquid to realize the recycling of cleaning liquid.

[0038] The vacuum acquisition assembly 10 includes a mechanical pump 101, a molecular pump 102, and a vacuum line 103. One end of the vacuum line 103 is connected to the top of the side wall of the cleaning chamber 21, and the other end is connected to the inlet of the molecular pump 102. The molecular pump 102 is mounted on the frame 1, and its outlet is connected to the mechanical pump 101. The mechanical pump 101 is mounted on the frame 1 and connected to the molecular pump 102, and is used to pre-evacuate the cleaning chamber 21.

[0039] A power distribution box 3 and a control equipment box 4 are mounted on frame 1. A control panel 5 is mounted on the cleaning chamber 21 to control the cleaning process. The blind cavity cleaning component 2, control equipment box 4, control panel 5, heating component 8, cleaning fluid treatment component 9, and vacuum acquisition component 10 are all electrically connected to the power distribution box 3. The blind cavity cleaning component 2, control panel 5, heating component 8, cleaning fluid treatment component 9, and vacuum acquisition component 10 are all electrically connected to the control equipment box 4.

[0040] The working process of this application is as follows: the operator only needs to place the blind cavity product to be cleaned on both sides or in the middle of the blind cavity product fixing bracket 22 according to the depth of the blind cavity, align the telescopic jet diverter 23 with the blind cavity inlet, then close the sealing door 6 on the cleaning chamber 21, and rotate and tighten the sealing door 6 by the safety device 7 on the cleaning chamber 21. Finally, the operator can remove the blind cavity product after cleaning and drying inside the cleaning chamber 21. Other operating steps can be performed using the control panel 5 and buttons.

[0041] This embodiment also provides a cleaning method for a vacuum boiling cleaning device, which includes the following steps: Step S1: First, the vacuum obtaining component 10 evacuates the inside of the cleaning chamber 21. After reaching a certain vacuum level, the water pump 98 in the cleaning fluid treatment component 9 pumps the filtered clean cleaning fluid in the cleaning fluid storage tank 94 into the cleaning chamber 21. After reaching a certain water level, the pipeline valve and the water pump 98 are closed.

[0042] Step S2: Start the ultrasonic generator 24 to perform ultrasonic cleaning on the blind cavity product for a certain period of time. After the ultrasonic cleaning is completed, the water pump 83 on the heating component 8 supplies the required liquid to the steam generator 82. The steam generated by the steam generator 82 enters the steam chamber 81 outside the cleaning chamber 21 through the pipe to heat the entire cleaning chamber 21. After a certain temperature is reached in the cleaning chamber 21, the cleaning liquid boils at a lower temperature due to the vacuum. A large number of bubbles generated in the cleaning liquid pool converge in the blind cavity, so as to completely discharge the cleaning liquid and contaminants from the inside of the blind cavity.

[0043] Step S3: Then control the vacuum acquisition component 10 to restore the internal pressure of the cleaning chamber 21 to atmospheric pressure. The pressure difference between the inside and outside of the blind cavity forces the cleaning fluid to re-enter the blind cavity in the form of a jet. Under the action of the telescopic jet diverter 23, the jet changes direction to clean the axial inner wall of the blind cavity. Finally, the cleaning fluid fills the blind cavity again.

[0044] Repeat steps S1, S2, and S3 as a single cycle of depressurized boiling cleaning. The depressurized boiling cleaning cycle is performed alternately with ultrasonic cleaning multiple times according to the cleaning program settings. In different depressurized boiling cleaning cycles, the extension height of the telescopic jet distributor 23 is adjusted to achieve effective cleaning of the inner wall of the blind cavity at all depths.

[0045] Step S4: After the cleaning process is completed, the vacuum acquisition component 10 restores the pressure in the cleaning chamber to atmospheric pressure, and the waste liquid is discharged into the cleaning liquid treatment component 9 through the waste liquid pipe 91 for filtration and recycling.

[0046] Step S5: Finally, restart the vacuum assembly 10 and the heating assembly 8 to bring the cleaning chamber 21 to a certain vacuum level and heat it to a certain temperature for vacuum drying of the product.

[0047] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A pressure-reducing boiling cleaning device, characterized in that, include: The frame (1), the blind cavity cleaning assembly (2), the sealing door (6), the heating assembly (8), the cleaning fluid treatment assembly (9), and the vacuum generation assembly (10) are all included. The blind cavity cleaning assembly (2) is set on the frame (1), and the blind cavity product is accommodated inside the opening on one side of the blind cavity cleaning assembly (2). The sealing door (6) is hinged to the blind cavity cleaning assembly (2) and seals the opening of the blind cavity cleaning assembly (2). The heating assembly (8) is sleeved on the outside of the blind cavity cleaning assembly (2). The cleaning fluid treatment assembly (9) is connected to the upper and lower parts of the blind cavity cleaning assembly (2), and the cleaning fluid is injected into the blind cavity cleaning assembly (2) from the top and discharged from the bottom. The vacuum acquisition component (10) is connected to the upper part of the blind cavity cleaning component (2) and evacuates the blind cavity cleaning component (2).

2. The vacuum boiling cleaning device according to claim 1, characterized in that, The frame (1) is a support structure with no enclosed surface, which is fixed by the cross-over connection of horizontal and vertical steel frames.

3. The vacuum boiling cleaning device according to claim 2, characterized in that, The blind cavity cleaning assembly (2) includes a cleaning cavity (21), a blind cavity product fixing bracket (22), a telescopic jet diverter (23), and an ultrasonic generator (24). The cleaning chamber (21) is installed on the upper part of the frame (1), and the side wall of the cleaning chamber (21) is open on the front side; the blind cavity product fixing bracket (22) is fixedly installed inside the cleaning chamber (21); the telescopic jet diverter (23) is set at the bottom of the cleaning chamber (21), and the top end is raised and lowered inside the blind hole of the blind cavity product; the ultrasonic generator (24) is fixed on the outer side of the bottom of the cleaning chamber (21).

4. The vacuum boiling cleaning device according to claim 3, characterized in that, The telescopic jet diverter (23) includes a riser, a telescopic rod and a guide surface. The riser is installed at the bottom of the cleaning chamber (21), and the telescopic rod is connected to the riser in a lifting manner. The guide surface is fixed to the top of the telescopic rod and extends horizontally. The telescopic rod passes through the fixed bracket (22) of the blind cavity product and is accommodated inside the blind hole of the blind cavity product.

5. The vacuum boiling cleaning device according to claim 4, characterized in that, The sealing door (6) is rotatably connected to one side of the opening of the cleaning chamber (21), and the other end extends toward the opposite side. The surface of the sealing door (6) abuts against and seals the opening of the cleaning chamber (21). The rotation axis of the sealing door (6) is coplanar with the plane of the opening of the sealing door (6) and the cleaning chamber (21). The sealing door (6) rotates and opens along the axis. A pressure sealing safety device (7) is provided on the sealing door (6). The safety device (7) includes a shaft pin and an abutment rod. The shaft pin is rotatably connected to the frame (1), and the shaft pin is circumferentially arranged along the opening direction of the cleaning chamber (21). The abutment rod is fixed to the shaft pin and extends radially along the shaft pin. The abutment rod abuts against the side wall of the sealing door (6) located on the opposite side of the cleaning chamber (21).

6. The vacuum boiling cleaning device according to claim 5, characterized in that, The heating assembly (8) includes a steam chamber (81), a steam generator (82), a water pump (83), and a control valve (84). The steam chamber (81) is fitted onto the outer wall of the cleaning chamber (21). The steam generator (82) is located on one side of the steam chamber (81) and consists of a heating tube, a metal shell, and a temperature sensor. The heating tube and the temperature sensor are located on the inner side of the metal shell. The shell has a water inlet and an air outlet. The air outlet is connected to the steam chamber (81). The water inlet of the shell is connected to the water outlet of the water pump (83). The water pump (83) is fixed on one side of the steam chamber (81). The control valve (84) is located at the water outlet of the water pump (83).

7. The vacuum boiling cleaning device according to claim 6, characterized in that, The cleaning fluid treatment assembly (9) includes a waste liquid pipe (91), a filter (92), a waste water pump (93), a cleaning fluid storage tank (94), a sealing cap (95), a water level sensor (96), a liquid particle size detection sensor (97), a water pump (98), and a water inlet pipe (99). Waste liquid pipe (91) is installed at the bottom of cleaning chamber (21) and connected to it; the inlet of filter (92) is connected to waste liquid pipe (91), and filter (92) is located below the bottom of cleaning chamber (21); the inlet of waste water pump (93) is connected to the outlet of filter (92); cleaning liquid storage tank (94) is connected to the outlet of waste water pump (93); the top of cleaning liquid storage tank (94) is provided with an opening, and sealing cap (95) is connected to and seals the cleaning liquid storage tank by thread. (94) Top opening; Water level sensor (96) and liquid particle size detection sensor (97) are installed on the top of the cleaning liquid storage tank (94) and extend to the inside of the cleaning liquid storage tank (94); Water pump (98) is set on one side of the cleaning liquid storage tank (94), the water inlet of water pump (98) is connected to the bottom inside of the cleaning liquid storage tank (94), the water outlet of water pump (98) is connected to the water inlet pipe (99), and the water inlet pipe (99) extends upward to the top inside of the cleaning chamber (21).

8. The vacuum boiling cleaning apparatus according to claim 7, characterized in that, The vacuum acquisition component (10) includes a mechanical pump (101), a molecular pump (102), and a vacuum pipe (103). One end of the vacuum pipe (103) is connected to the top of the side wall of the cleaning chamber (21), and the other end is connected to the inlet of the molecular pump (102). The molecular pump (102) is mounted on the frame (1), and its outlet is connected to the mechanical pump (101). The mechanical pump (101) is mounted on the frame (1) and connected to the molecular pump (102) for pre-vacuuming the cleaning chamber (21).

9. The vacuum boiling cleaning apparatus according to claim 8, characterized in that, The frame (1) is provided with a power distribution box (3) and a control equipment box (4), and the cleaning chamber (21) is provided with a control panel (5) for controlling the cleaning process. The blind cavity cleaning component (2), control equipment box (4), control panel (5), heating component (8), cleaning fluid treatment component (9) and vacuum acquisition component (10) are all electrically connected to the power distribution box (3); the blind cavity cleaning component (2), control panel (5), heating component (8), cleaning fluid treatment component (9) and vacuum acquisition component (10) are all electrically connected to the control equipment box (4).

10. A cleaning method for a vacuum boiling cleaning device, using the vacuum boiling cleaning device according to any one of claims 1-8, characterized in that the steps include... include: Step S1: First, the vacuum obtaining component (10) evacuates the inside of the cleaning chamber (21). After reaching the vacuum level, the water pump (98) in the cleaning liquid treatment component (9) pumps the filtered clean cleaning liquid in the cleaning liquid storage tank (94) into the cleaning chamber (21). After reaching the water level, the pipeline valve and the water pump (98) are closed. Step S2: Start the ultrasonic generator (24) to perform ultrasonic cleaning on the blind cavity product. After the ultrasonic cleaning is completed, the water pump (83) on the heating component (8) provides the required liquid to the steam generator (82). The steam generated by the steam generator (82) enters the steam chamber (81) outside the cleaning chamber (21) through the pipe to heat the entire cleaning chamber (21). After the temperature is reached in the cleaning chamber (21), the cleaning liquid will boil at a temperature lower than the normal pressure boiling point due to the vacuum. A large number of bubbles generated in the cleaning liquid pool converge in the blind cavity, completely discharging the cleaning liquid and contaminants from the inside of the blind cavity. Step S3: Then control the vacuum acquisition component (10) to restore the pressure inside the cleaning chamber (21) to atmospheric pressure. The pressure difference between the inside and outside of the blind cavity forces the cleaning fluid to re-enter the blind cavity in the form of a jet. Under the action of the telescopic jet splitter (23), the jet changes direction to clean the axial inner wall of the blind cavity. Finally, the cleaning fluid fills the blind cavity again. Repeat steps S1, S2, and S3 as a single cycle of depressurized boiling cleaning; the depressurized boiling cleaning cycle is performed multiple times in conjunction with ultrasonic cleaning according to the cleaning program setting. In different depressurized boiling cleaning cycles, the extension height of the telescopic jet splitter (23) is adjusted to achieve effective cleaning of the inner wall of the blind cavity at full depth. Step S4: After the cleaning process is completed, the vacuum acquisition component (10) restores the pressure in the cleaning chamber to atmospheric pressure, and the waste liquid is discharged into the cleaning liquid treatment component (9) through the waste liquid pipe (91) for filtration and recycling. Step S5: Finally, restart the vacuum assembly (10) and heating assembly (8) to bring the cleaning chamber (21) to a certain vacuum level and heat it to a certain temperature for vacuum drying of the product.

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