Machining part cleaning equipment and cleaning method

Abstract

The invention belongs to the field of cleaning equipment, and particularly relates to machining part cleaning equipment and a cleaning method, workpieces are cleaned and dried through a cleaning device and a drying device respectively, cleaning liquid with certain pressure acts on the workpieces, oil stains and metal chips on the inner surfaces and the outer surfaces of the workpieces are removed, and cleaning efficiency is improved. The inner surface and the outer surface of the workpiece are deeply cleaned by combining the effect of vacuum ultrasonic soaking and cleaning, primary rinsing and vacuum ultrasonic rinsing are carried out by utilizing deionized water or commercial water with certain pressure, and in the process, a cleaning bearing frame drives a cleaning basket to rotate or swing, so that cleaning is more comprehensive and thorough; after cleaning is completed, the cleaning basket and the workpiece are transferred into the drying cylinder through the conveying device, and the workpiece is completely dried in the mode that hot air is matched with vacuum. The cleaning and rinsing processes are carried out in the cleaning cylinder, drying is carried out in the drying cylinder, and the whole equipment is small in occupied area, high in working efficiency and good in cleaning and drying effect.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a cleaning equipment and a cleaning method for machined parts. Background Art

[0002] At present, industrial cleaning equipment is developing rapidly, and has integrated cleaning processes such as ultrasonic cleaning, spray cleaning, drying, and bubbling. However, most of the existing cleaning equipment is assembly line type, with a long line body and a large footprint. Moreover, for complex machined parts (such as the valve body of a valve), only the external cleaning can be performed, and the internal holes, cavities, flow channels and other structures cannot be cleaned well, resulting in low cleaning cleanliness and failure to meet the requirements. Summary of the invention

[0003] The embodiments of the present application provide a machined parts cleaning device and a cleaning method, which aim to reduce the floor space and improve the cleanliness.

[0004] To achieve the above-mentioned purpose, the present application provides a machined parts cleaning device, comprising a washing basket, a washing device, a drying device, a vacuum device, and a conveying device for transporting the washing basket between the washing device and the drying device;

[0005] The cleaning device comprises a horizontal cleaning cylinder and a cleaning liquid storage tank and a rinsing liquid storage tank arranged below the cleaning cylinder; the cleaning cylinder comprises a cleaning outer cylinder body with an opening at the front end, a cleaning carrier and a cleaning sealing door, the cleaning carrier body is coaxially rotatably arranged in the cleaning outer cylinder body, and a first motor for driving the cleaning carrier body to rotate or swing is arranged at the rear end of the cleaning outer cylinder body; the cleaning sealing door is used to seal the opening of the cleaning outer cylinder body, and the inner wall of the cleaning outer cylinder body is provided with a plurality of nozzles along the circumferential direction; the cleaning liquid storage tank pumps cleaning liquid for the nozzle through a cleaning liquid delivery pipeline The cleaning liquid is pumped into the nozzle through the rinsing liquid delivery pipeline by the rinsing liquid storage tank; the compressed air source delivers compressed air to the nozzle through the air delivery pipe; the lower end of the cleaning outer cylinder is provided with a cleaning liquid return pipe connected to the cleaning liquid storage tank and a rinsing liquid return pipe connected to the rinsing liquid storage tank, and valves are provided on the cleaning liquid return pipe and the rinsing liquid return pipe; the cleaning liquid storage tank and the rinsing liquid storage tank are both provided with an oil-water separator and a liquid heater; an ultrasonic vibration rod connected to an ultrasonic generator is provided between the cleaning carrier and the cleaning outer cylinder;

[0006] The drying device comprises a horizontal drying drum and a hot air circulation system; the drying drum comprises a drying outer cylinder body with an opening at the front end, a drying carrier frame and a drying sealing door; the drying carrier frame is coaxially rotatably arranged in the drying outer cylinder body, and a second motor for driving the drying carrier frame to rotate or swing is arranged at the rear end of the drying outer cylinder body; the drying sealing door is used to seal the opening of the drying outer cylinder body; a drain valve is arranged at the lower end of the drying outer cylinder body, and the hot air circulation system is connected to the interior of the drying outer cylinder body;

[0007] The vacuuming device is communicated with the interior of the cleaning outer cylinder and the drying outer cylinder respectively, and is used for vacuuming the interior of the cleaning outer cylinder and the drying outer cylinder.

[0008] Optionally, a liquid distribution pipe connected to each of the nozzles is provided at the rear end of the cleaning outer cylinder, and the liquid distribution pipe is connected to the cleaning liquid delivery pipeline, the rinsing liquid delivery pipeline and the air delivery pipe through a four-way valve.

[0009] Optionally, a plurality of spray pipes are arranged on the inner side of the cleaning outer cylinder, the axial directions of the plurality of spray pipes are parallel to the axial direction of the cleaning outer cylinder, the plurality of spray pipes are arranged at intervals in the circumferential direction of the cleaning outer cylinder, the rear end of each spray pipe extends from the rear end of the cleaning outer cylinder and is connected with the liquid distribution pipe; each of the spray pipes is provided with a plurality of nozzles along its length direction, and the spray direction of each nozzle is toward the axis of the cleaning outer cylinder.

[0010] Optionally, the cleaning liquid delivery pipeline includes a cleaning liquid delivery pipe and a cleaning pump and a filter arranged on the cleaning liquid delivery pipe, and both ends of the cleaning liquid delivery pipe are respectively connected to the cleaning liquid storage tank and the first interface of the four-way valve;

[0011] The rinsing liquid delivery pipeline includes a rinsing liquid delivery pipe and a rinsing pump and a filter arranged on the rinsing liquid delivery pipe, and both ends of the rinsing liquid delivery pipe are respectively connected to the rinsing liquid storage tank and the second interface of the four-way valve;

[0012] The gas delivery pipe is connected to the third interface of the four-way valve.

[0013] Optionally, the cleaning device further comprises an exhaust assembly, wherein the exhaust assembly comprises an exhaust pipe connected to the interior of the cleaning outer cylinder, and an exhaust fan and an oil mist separator arranged on the exhaust pipe.

[0014] Optionally, the cleaning liquid reservoir and the rinsing liquid reservoir are both connected to a circulation filtering device, and the circulation filtering device includes a circulation pipe connected to the cleaning liquid reservoir / the rinsing liquid reservoir to form a loop, and a circulation pump and a filter arranged on the circulation pipe;

[0015] The cleaning liquid reservoir and the rinsing liquid reservoir are both connected to a liquid replenishing device, which includes a high and low liquid level sensor arranged in the cleaning liquid reservoir / the rinsing liquid reservoir, a liquid replenishing tube connected to the cleaning liquid reservoir / the rinsing liquid reservoir, and a liquid replenishing pump arranged on the liquid replenishing tube.

[0016] Optionally, the liquid heater includes an electric heating tube and a temperature sensor disposed in the cleaning liquid storage tank / the rinsing liquid storage tank, and a temperature controller electrically connected to the electric heating tube and the temperature sensor.

[0017] Optionally, the hot air circulation system includes a hot air duct and an air heating box, a hot air blower and an air filter arranged on the hot air duct, and the top and rear end of the drying outer cylinder are respectively provided with an air inlet and an air outlet, and the two ends of the hot air duct are respectively connected to the air inlet and the air outlet.

[0018] Optionally, the vacuum extraction device includes an exhaust pipe and a vacuum pump arranged on the exhaust pipe, one end of the exhaust pipe is connected to the interior of the cleaning outer cylinder and the interior of the drying outer cylinder respectively through two branch pipes, and valves are arranged on both branch pipes.

[0019] The present application also provides a cleaning method, based on the machined parts cleaning device as described above, the cleaning method comprises the following steps:

[0020] The washing basket containing the workpieces enters the washing carrier in the washing cylinder under the action of the conveying device, the washing sealing door is closed, the vacuum device draws vacuum on the washing outer cylinder, the washing liquid storage tank pumps the washing liquid to the nozzle through the washing liquid conveying pipeline, and the workpieces in the washing basket are sprayed and cleaned. When the washing liquid covers the washing basket, the spray cleaning is ended, and the ultrasonic vibrating rod is started for vacuum immersion ultrasonic cleaning. After the cleaning is completed, the washing liquid is discharged into the washing liquid storage tank through the washing liquid reflux pipe; then, the compressed gas source conveys compressed air to the nozzle through the gas pipeline to perform the first compressed gas wind shear;

[0021] After the first compressed gas wind shearing is completed, the vacuum device evacuates the cleaning outer cylinder, and the rinsing liquid storage tank pumps the rinsing liquid to the nozzle through the rinsing liquid delivery pipeline to spray and rinse the workpieces in the washing basket. When the rinsing liquid covers the washing basket, the spray rinsing is ended, and the ultrasonic vibrating rod is started to perform vacuum immersion ultrasonic rinsing. After the rinsing is completed, the rinsing liquid is discharged into the rinsing liquid storage tank through the rinsing liquid reflux pipe; then, the compressed gas source delivers compressed air to the nozzle through the air delivery pipe to perform the second compressed gas wind shearing;

[0022] After the second compressed gas wind shear is completed, the cleaning sealing door is opened, and the washing basket is transported to the drying carrier in the drying drum through the conveying device, and the drying sealing door is closed, and the hot air circulation system is started to perform hot air circulation and vacuum drying. After the drying is completed, the drying sealing door is opened, and the washing basket is output through the conveying device;

[0023] Among them, during the processes of spray cleaning, vacuum immersion ultrasonic cleaning, the first compressed gas wind cutting, spray rinsing, vacuum immersion ultrasonic rinsing and the second compressed gas wind cutting, the first motor drives the cleaning carrier to drive the washing basket to rotate or swing; during the hot air circulation and vacuum drying process, the second motor drives the drying carrier to drive the washing basket to rotate or swing.

[0024] The beneficial effects of the machined parts cleaning equipment and cleaning method provided by the present application are as follows: compared with the prior art, the machined parts cleaning equipment and cleaning method of the present application respectively realize the cleaning and drying of the workpiece through a cleaning device and a drying device. During the cleaning process, a cleaning liquid with a certain pressure is used to act on the workpiece to remove the oil and metal debris on the inner and outer surfaces of the workpiece, and the inner and outer surfaces of the workpiece are deeply cleaned by combining the effect of vacuum ultrasonic immersion cleaning, and then a certain pressure of deionized water or city water is used for a rinse and vacuum ultrasonic rinse to remove the residual cleaning liquid on the inner and outer surfaces of the workpiece. Compressed gas wind shearing is performed before and after rinsing to remove the liquid on the surface of the workpiece between each spray cleaning process. In the above process, the cleaning carrier drives the washing basket to rotate or swing, making the cleaning more comprehensive and thorough; after the cleaning is completed, the washing basket connected to the workpiece is transferred to the drying drum through the conveying device, and the hot air is combined with the vacuum method to make it completely dry. The above cleaning and rinsing process is carried out in the cleaning drum, and the drying is carried out in the drying drum. The whole equipment occupies a small area, has high working efficiency, and has good cleaning and drying effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application 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 some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] in:

[0027] Figure 1 It is a schematic diagram of the overall structure of the machined parts cleaning equipment shown in one embodiment of the present application;

[0028] Figure 2 It is a structural schematic diagram of a cleaning device and a drying device of a machined parts cleaning device shown in one embodiment of the present application;

[0029] Figure 3It is a schematic diagram of the front end of a washing cylinder after removing the washing sealing door and a drying cylinder after removing the drying sealing door, shown in one embodiment of the present application;

[0030] Figure 4 yes Figure 3 A schematic diagram of the rear end of the washing cylinder and the drying cylinder shown;

[0031] Figure 5 It is a schematic cross-sectional structural diagram of a cleaning cylinder after removing the cleaning sealing door shown in an embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of the internal structure of a cleaning cylinder after removing the cleaning sealing door and the cleaning outer cylinder body shown in an embodiment of the present application;

[0033] Figure 7 It is a schematic cross-sectional structure diagram of a drying drum after removing the drying sealing door shown in an embodiment of the present application;

[0034] Figure 8 It is a schematic diagram of the principle of a machined parts cleaning device shown in one embodiment of the present application.

[0035] Description of main component symbols:

[0036] 100. Washing basket;

[0037] 200. Cleaning device;

[0038] 210, cleaning cylinder; 211, cleaning outer cylinder; 212, cleaning carrier; 213, cleaning seal

[0039] door; 214, first motor; 215, nozzle; 216, spray pipe; 217, liquid distribution pipe;

[0040] 220, cleaning liquid storage tank; 2211, cleaning liquid delivery pipe; 2212, cleaning pump; 222, cleaning

[0041] Liquid return pipe;

[0042] 230, rinsing liquid storage tank; 2311, rinsing liquid delivery pipe; 2312, rinsing pump; 232, rinsing

[0043] Liquid return pipe;

[0044] 240, compressed gas source; 241, gas pipeline;

[0045] 250. Ultrasonic generator; 251. Ultrasonic vibrating rod;

[0046] 260. Oil-water separator;

[0047] 270. Circulation filtering device;

[0048] 281. Electric heating tube;

[0049] 291. exhaust pipe; 292. exhaust fan; 293. oil mist separator;

[0050] 300. Drying device;

[0051] 310, drying cylinder; 311, drying outer cylinder; 3111, drain valve; 312, drying carrier;

[0052] 313, drying sealing door; 314, second motor;

[0053] 320. Hot air circulation system; 321. Hot air duct; 322. Air heating box; 323. Hot air

[0054] Fan; 324, air filter;

[0055] 410, exhaust pipe; 411, branch pipe; 420, vacuum pump;

[0056] 500, conveying device; 510, roller conveyor; 520, push-pull mechanism;

[0057] 600, casing; 601, import and export. DETAILED DESCRIPTION

[0058] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0059] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0060] It should be understood that the terms "length", "width", "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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0063] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0064] According to one aspect of the present application, an embodiment of the present application provides a machined parts cleaning device, such as Figure 1-Figure 8 As shown, the machined parts cleaning equipment includes a washing basket 100 , a washing device 200 , a drying device 300 , a vacuum device, and a conveying device 500 for transferring the washing basket 100 between the washing device 200 and the drying device 300 .

[0065] The washing basket 100 is used to hold multiple workpieces to be cleaned after processing, and can ensure that the workpieces will not fall. The washing basket 100 is a rectangular parallelepiped (e.g., 1400 mm long, 480 mm wide, and 380 mm high) as a whole, and is a frame structure. The washing basket 100 can be fed and clamped on the washing support frame 212 of the washing cylinder 210 and the drying support frame 312 of the drying cylinder 310 in the circumferential direction, and rotate or swing with the washing support frame 212 / drying support frame 312. The washing basket 100 is coated with a grid to prevent the workpieces from bumping during rotation, cleaning, and drying.

[0066] The cleaning device 200 includes a horizontal cleaning cylinder 210 and a cleaning liquid storage tank 220 and a rinsing liquid storage tank 230 arranged below the cleaning cylinder 210; the cleaning cylinder 210 includes a cleaning outer cylinder 211 with an opening at the front end, a cleaning carrier 212 and a cleaning sealing door 213, the cleaning carrier 212 is coaxially rotatably arranged in the cleaning outer cylinder 211, and a first motor 214 for driving the cleaning carrier 212 to rotate or swing is arranged at the rear end of the cleaning outer cylinder 211; the cleaning sealing door 213 is used to seal the opening of the cleaning outer cylinder 211, and a plurality of nozzles 215 are arranged on the inner wall of the cleaning outer cylinder 211 along the circumferential direction. The cleaning liquid storage tank 220 pumps cleaning liquid to the nozzle 215 through a cleaning liquid delivery pipeline. The rinsing liquid storage tank 230 pumps rinsing liquid to the nozzle 215 through a rinsing liquid delivery pipeline. The compressed air source 240 delivers compressed air to the nozzle 215 through an air delivery pipe 241. The lower end of the cleaning outer cylinder 211 is provided with a cleaning liquid reflux pipe 222 connected to the cleaning liquid storage tank 220 and a rinsing liquid reflux pipe 232 connected to the rinsing liquid storage tank 230. Valves are provided on the cleaning liquid reflux pipe 222 and the rinsing liquid reflux pipe 232. It should be noted here that the cleaning liquid storage tank 220 and the rinsing liquid storage tank 230 are arranged below the cleaning cylinder 210, so that the liquid in the cleaning outer cylinder 211 can be quickly discharged and returned to the storage tank after cleaning / rinsing, thereby improving the cleaning efficiency.

[0067] The cleaning liquid storage tank 220 and the rinsing liquid storage tank 230 are both provided with an oil-water separator 260 and a liquid heater. The oil-water separator 260 can adopt a RIX rotary oil-water separator to effectively separate the oil in the cleaning liquid / rinsing liquid, extend the service life of the cleaning liquid / rinsing liquid, and improve the cleanliness. The liquid heater is used to heat the cleaning liquid / rinsing liquid to a certain temperature (such as 50±5°C) to improve the decontamination and cleaning effect.

[0068] An ultrasonic vibrating rod 251 (frequency 25KHZ, power 2000W / set, brand German Martin Walter) connected to the ultrasonic generator 250 is arranged between the cleaning carrier 212 and the cleaning outer cylinder 211. The drying device 300 includes a horizontal drying cylinder 310 and a hot air circulation system 320; the drying cylinder 310 includes a drying outer cylinder 311 with an opening at the front end, a drying carrier 312 and a drying sealing door 313, the drying carrier 312 is coaxially rotatably arranged in the drying outer cylinder 311, and the rear end of the drying outer cylinder 311 is provided with a second motor 314 for driving the drying carrier 312 to rotate or swing; the drying sealing door 313 is used to seal the opening of the drying outer cylinder 311; a drain valve 3111 is provided at the lower end of the drying outer cylinder 311, and the hot air circulation system 320 is connected to the interior of the drying outer cylinder 311. The vacuuming device is communicated with the interior of the cleaning outer cylinder 211 and the drying outer cylinder 311 respectively, and is used for vacuuming the interior of the cleaning outer cylinder 211 and the drying outer cylinder 311 .

[0069] In the embodiment of the present application, the machined parts cleaning equipment realizes the cleaning and drying of the workpiece through the cleaning device 200 and the drying device 300 respectively. During the cleaning process, a cleaning liquid with a certain pressure is used to act on the workpiece to remove the oil and metal debris on the inner and outer surfaces of the workpiece, and the inner and outer surfaces of the workpiece are deeply cleaned by combining the effect of vacuum ultrasonic immersion cleaning, and then a certain pressure of deionized water or city water is used for a rinse and vacuum ultrasonic rinse to remove the cleaning liquid residue on the inner and outer surfaces of the workpiece. Compressed gas wind shearing is performed before and after rinsing to remove the liquid on the surface of the workpiece between each spray cleaning process to prevent the liquid from flowing between each process. In the above process, the cleaning carrier 212 drives the washing basket 100 to rotate or swing, so that the cleaning is more comprehensive and thorough; after the cleaning is completed, the washing basket 100 is connected to the workpiece and transferred to the drying drum 310 through the conveying device 500, and the workpiece is completely dried by hot air combined with vacuum. The above cleaning and rinsing process is carried out in the cleaning drum 210, and the drying is carried out in the drying drum 310. The whole equipment occupies a small area, has high working efficiency, and has good cleaning and drying effects.

[0070] In one embodiment, if Figure 2 , Figure 4 , Figure 6 and Figure 8 As shown, a liquid distribution pipe 217 connected to each nozzle 215 is provided at the rear end of the cleaning outer cylinder 211, and the liquid distribution pipe 217 is connected to the cleaning liquid delivery pipeline, the rinsing liquid delivery pipeline and the air delivery pipe 241 through a four-way valve.

[0071] Specifically, a plurality of spray pipes 216 are arranged on the inner side of the cleaning outer cylinder 211, and the axial directions of the plurality of spray pipes 216 are parallel to the axial direction of the cleaning outer cylinder 211. The plurality of spray pipes 216 are arranged at intervals in the circumferential direction of the cleaning outer cylinder 211, and the rear end of each spray pipe 216 extends from the rear end of the cleaning outer cylinder 211 and is connected to the liquid distribution pipe 217; each spray pipe 216 is provided with a plurality of nozzles 215 along its length direction, and the spray direction of each nozzle 215 is toward the axis of the cleaning outer cylinder 211.

[0072] By providing a plurality of spray pipes 216 and cooperating with the cleaning carrier 212, the workpieces in the washing basket 100 are driven to rotate 360 ​​degrees or swing back and forth, so that spray cleaning, spray rinsing and compressed gas wind shearing are more comprehensive and thorough.

[0073] In one embodiment, if Figure 2 and Figure 8As shown, the cleaning liquid delivery pipeline includes a cleaning liquid delivery pipe 2211 and a cleaning pump 2212 and a filter arranged on the cleaning liquid delivery pipe 2211, and the two ends of the cleaning liquid delivery pipe 2211 are respectively connected to the cleaning liquid storage tank 220 and the first interface of the four-way valve. The rinsing liquid delivery pipeline includes a rinsing liquid delivery pipe 2311 and a rinsing pump 2312 and a filter arranged on the rinsing liquid delivery pipe 2311, and the two ends of the rinsing liquid delivery pipe 2311 are respectively connected to the rinsing liquid storage tank 230 and the second interface of the four-way valve. The air delivery pipe 241 connected to the compressed air source 240 (such as an air compressor, which is used to provide 0.3MPa compressed air, which is used to remove the liquid on the surface of the parts between each spray cleaning process) is connected to the third interface of the four-way valve. By switching the four-way valve, a set of nozzles 215 can be used to realize cleaning liquid spray flushing, rinsing liquid spray flushing and compressed gas wind shearing.

[0074] In one embodiment, if Figure 2 and Figure 8 As shown, the cleaning device 200 further includes an exhaust assembly, which includes an exhaust pipe 291 connected to the interior of the cleaning outer cylinder 211 , and an exhaust fan 292 and an oil mist separator 293 arranged on the exhaust pipe 291 .

[0075] In one embodiment, if Figure 2 and Figure 8 As shown, the liquid heater includes an electric heating tube 281 and a temperature sensor disposed in the cleaning liquid storage tank 220 / rinsing liquid storage tank 230, and a temperature controller electrically connected to the electric heating tube 281 and the temperature sensor.

[0076] The cleaning liquid reservoir 220 and the rinsing liquid reservoir 230 are both connected to a circulation filter device 270, which includes a circulation pipe connected to the cleaning liquid reservoir 220 / rinsing liquid reservoir 230 and forming a loop, and a circulation pump and a filter arranged on the circulation pipe. The circulation filter device 270 improves the cleanliness of the cleaning liquid / rinsing liquid and enhances the cleaning effect. The cleaning liquid reservoir 220 and the rinsing liquid reservoir 230 are both connected to a liquid replenishing device, which includes a high and low liquid level sensor arranged in the cleaning liquid reservoir 220 / rinsing liquid reservoir 230, a liquid replenishing pipe connected to the cleaning liquid reservoir 220 / rinsing liquid reservoir 230, and a liquid replenishing pump arranged on the liquid replenishing pipe.

[0077] Specifically, the high and low liquid level sensors are set with three liquid levels: high, medium and low. The high level alarm is used, and the low level is used to protect the electric heating tube 281 and the pump lower limit protection circulation filter pump and heating device. When the lower limit is reached, the pump and heating device stop working, and the water inlet solenoid valve is started for liquid replenishment. When the upper limit is reached, the liquid replenishment is stopped.

[0078] In one embodiment, if Figure 2 and Figure 8As shown, the hot air circulation system 320 includes a hot air duct 321 and an air heating box 322, a hot air blower 323 and an air filter 324 arranged on the hot air duct 321. The top and rear end of the drying outer cylinder 311 are respectively provided with an air inlet and an air outlet, and the two ends of the hot air duct 321 are respectively connected to the air inlet and the air outlet.

[0079] Specifically, the maximum heating temperature of the air heating box 322 is 120°C, and the hot air blower 323 adopts a Fengbeck heat-resistant blower with a power of 3.7KW and an air volume of 24m 3 / h, the dehumidification outlet of the hot air duct 321 is directly connected to the steam condenser for processing. The air filter 324 is resistant to high temperatures, and the air volume is not less than 24m 3 / h, filtration accuracy 10μm.

[0080] In one embodiment, if Figure 2 and Figure 8 As shown, the vacuum pumping device includes an air extraction pipe 410 and a vacuum pump 420 (such as German Speck vacuum pressure -0.09Mpa) arranged on the air extraction pipe 410. One end of the air extraction pipe 410 is connected to the inside of the cleaning outer cylinder 211 and the inside of the drying outer cylinder 311 through two branch pipes 411, and valves are arranged on the two branch pipes 411. By switching the valves, the cleaning outer cylinder 211 and the drying outer cylinder 311 share a set of vacuum pumping devices, which simplifies the structure and saves costs.

[0081] In one embodiment, if Figure 1 As shown, the machined parts cleaning device also includes a housing 600, and the cleaning device 200, the drying device 300 and the vacuum device are all arranged in the housing 600. One side of the housing 600 is provided with two inlets and outlets 601 corresponding to the openings at the front end of the cleaning outer cylinder 211 and the openings at the front end of the drying outer cylinder 311, respectively, so as to allow the washing basket 100 to enter and exit the cleaning outer cylinder 211 / drying outer cylinder 311. The conveying device 500 is arranged on the side of the housing 600 where the inlet and outlet 601 are provided. The conveying device 500 includes a roller conveyor 510 and two sets of push-pull mechanisms 520 arranged on the side of the roller conveyor 510 away from the housing 600. The two sets of push-pull mechanisms 520 correspond to the two inlets and outlets 601 on the housing 600, respectively, and are used to push the washing basket 100 located on the roller conveyor 510 into or out of the cleaning outer cylinder 211 / drying outer cylinder 311. Specifically, the push-pull mechanism 520 can be driven by a cylinder, an electric cylinder or an oil cylinder.

[0082] The working process is that the operator loads the workpiece into the dedicated washing basket 100. After loading, press the start button, and the conveying device 500 automatically transports the washing basket 100 to the washing chamber in the washing outer cylinder 211. The washing sealing door 213 automatically closes, and the degreasing spray and ultrasonic cleaning begin. After the entire cleaning process is automatically completed according to the set program, the washing outer cylinder 211 is exited and transported to the drying chamber of the drying outer cylinder 311. To ensure that the workpiece is completely cleaned and dried, the rotating basket can be rotated or swung. After the equipment automatically completes all processes, it automatically transports the washing basket 100 out and descends to the unloading position. After the operator finishes unloading, the start button automatically transports the empty basket to the loading position to complete the entire process.

[0083] The whole machined parts cleaning equipment is a fully enclosed structure. The housing 600 has a detachable inspection door. The appearance is beautiful and elegant. The front and rear door panels are both open and close, and a protection switch is set. When the door is opened, the spraying and rotating movements will stop. An observation and maintenance window is set on the side, and an inspection light is installed in front of the observation window to observe the spraying and drying effects of the workpiece during cleaning. The equipment adopts touch screen and PLC full-automatic control, which is simple to operate, high in production efficiency, and good in drying effect.

[0084] According to another aspect of the present application, an embodiment of the present application also provides a cleaning method. Based on the machined parts cleaning equipment in the above embodiment, the process of the cleaning method is as follows: feeding → spray cleaning + vacuum immersion ultrasonic cleaning → wind cutting → spray rinsing + vacuum immersion ultrasonic rinsing → wind cutting → hot air + vacuum drying → discharging.

[0085] The specific steps include:

[0086] The washing basket 100 containing the workpieces enters the washing carrier 212 in the washing cylinder 210 under the action of the conveying device 500, the washing sealing door 213 is closed, the vacuum device evacuates the inside of the washing outer cylinder 211, and the washing liquid storage tank 220 pumps the washing liquid to the nozzle 215 through the washing liquid delivery pipeline to spray the workpieces in the washing basket 100. When the washing liquid covers the washing basket 100, the spray cleaning is ended, and the ultrasonic vibration rod 251 is started to perform vacuum immersion ultrasonic cleaning. After the cleaning is completed, the washing liquid is discharged into the washing liquid storage tank 220 through the washing liquid reflux pipe 222; then, the compressed air source 240 delivers compressed air to the nozzle 215 through the air delivery pipe 241 to perform the first compressed gas wind shear;

[0087] After the first compressed gas wind shearing is completed, the vacuuming device vacuumizes the cleaning outer cylinder 211, and the rinsing liquid storage tank 230 pumps the rinsing liquid to the nozzle 215 through the rinsing liquid delivery pipeline to spray and rinse the workpieces in the washing basket 100. When the rinsing liquid covers the washing basket 100, the spray rinsing is ended, and the ultrasonic vibration rod 251 is started to perform vacuum immersion ultrasonic rinsing. After the rinsing is completed, the rinsing liquid is discharged into the rinsing liquid storage tank 230 through the rinsing liquid reflux pipe 232; then, the compressed gas source 240 delivers compressed air to the nozzle 215 through the air delivery pipe 241 to perform the second compressed gas wind shearing;

[0088] After the second compressed gas wind shear is completed, the cleaning sealing door 213 is opened, and the washing basket 100 is transported to the drying carrier 312 in the drying cylinder 310 through the conveying device 500, and the drying sealing door 313 is closed, and the hot air circulation system 320 is started to perform hot air circulation and vacuum drying. After the drying is completed, the drying sealing door 313 is opened, and the washing basket 100 is output through the conveying device 500;

[0089] Among them, during the processes of spray cleaning, vacuum immersion ultrasonic cleaning, the first compressed gas wind cutting, spray rinsing, vacuum immersion ultrasonic rinsing and the second compressed gas wind cutting, the first motor 214 drives the cleaning carrier 212 to drive the washing basket 100 to rotate or swing; during the hot air circulation and vacuum drying process, the second motor 314 drives the drying carrier 312 to drive the washing basket 100 to rotate or swing.

[0090] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A machined parts cleaning device, characterized in that: It includes a washing basket, a cleaning device, a drying device, a vacuum device, and a conveying device for transporting the washing basket between the cleaning device and the drying device; The cleaning device comprises a horizontal cleaning cylinder and a cleaning liquid storage tank and a rinsing liquid storage tank arranged below the cleaning cylinder; the cleaning cylinder comprises a cleaning outer cylinder body with an opening at the front end, a cleaning carrier and a cleaning sealing door, the cleaning carrier body is coaxially rotatably arranged in the cleaning outer cylinder body, and a first motor for driving the cleaning carrier body to rotate or swing is arranged at the rear end of the cleaning outer cylinder body; the cleaning sealing door is used to seal the opening of the cleaning outer cylinder body, and the inner wall of the cleaning outer cylinder body is provided with a plurality of nozzles along the circumferential direction; the cleaning liquid storage tank pumps cleaning liquid for the nozzle through a cleaning liquid delivery pipeline The cleaning liquid is pumped into the nozzle through the rinsing liquid delivery pipeline by the rinsing liquid storage tank; the compressed air source delivers compressed air to the nozzle through the air delivery pipe; the lower end of the cleaning outer cylinder is provided with a cleaning liquid return pipe connected to the cleaning liquid storage tank and a rinsing liquid return pipe connected to the rinsing liquid storage tank, and valves are provided on the cleaning liquid return pipe and the rinsing liquid return pipe; the cleaning liquid storage tank and the rinsing liquid storage tank are both provided with an oil-water separator and a liquid heater; an ultrasonic vibration rod connected to an ultrasonic generator is provided between the cleaning carrier and the cleaning outer cylinder; The drying device comprises a horizontal drying drum and a hot air circulation system; the drying drum comprises a drying outer cylinder body with an opening at the front end, a drying carrier frame and a drying sealing door; the drying carrier frame is coaxially rotatably arranged in the drying outer cylinder body, and a second motor for driving the drying carrier frame to rotate or swing is arranged at the rear end of the drying outer cylinder body; the drying sealing door is used to seal the opening of the drying outer cylinder body; a drain valve is arranged at the lower end of the drying outer cylinder body, and the hot air circulation system is connected to the interior of the drying outer cylinder body; The vacuuming device is communicated with the interior of the cleaning outer cylinder and the drying outer cylinder respectively, and is used for vacuuming the interior of the cleaning outer cylinder and the drying outer cylinder.

2. The machined parts cleaning equipment according to claim 1, characterized in that: A liquid distribution pipe connected to each of the nozzles is provided at the rear end of the cleaning outer cylinder, and the liquid distribution pipe is connected to the cleaning liquid delivery pipeline, the rinsing liquid delivery pipeline and the air delivery pipe through a four-way valve.

3. The machined parts cleaning equipment according to claim 2, characterized in that: A plurality of spray pipes are arranged on the inner side of the cleaning outer cylinder body, the axial directions of the plurality of spray pipes are parallel to the axial direction of the cleaning outer cylinder body, the plurality of spray pipes are arranged at intervals in the circumferential direction of the cleaning outer cylinder body, the rear end of each spray pipe extends from the rear end of the cleaning outer cylinder body and is connected to the liquid distribution pipe; each of the spray pipes is provided with a plurality of nozzles along its length direction, and the spray direction of each nozzle is toward the axis of the cleaning outer cylinder body.

4. The machined parts cleaning equipment according to claim 2, characterized in that: The cleaning liquid delivery pipeline includes a cleaning liquid delivery pipe and a cleaning pump and a filter arranged on the cleaning liquid delivery pipe, and the two ends of the cleaning liquid delivery pipe are respectively connected to the cleaning liquid storage tank and the first interface of the four-way valve; The rinsing liquid delivery pipeline includes a rinsing liquid delivery pipe and a rinsing pump and a filter arranged on the rinsing liquid delivery pipe, and both ends of the rinsing liquid delivery pipe are respectively connected to the rinsing liquid storage tank and the second interface of the four-way valve; The gas delivery pipe is connected to the third interface of the four-way valve.

5. The machined parts cleaning equipment according to claim 1, characterized in that: The cleaning device further comprises an exhaust assembly, wherein the exhaust assembly comprises an exhaust pipe communicated with the interior of the cleaning outer cylinder, and an exhaust fan and an oil mist separator arranged on the exhaust pipe.

6. The machined parts cleaning equipment according to claim 1, characterized in that: The cleaning liquid storage tank and the rinsing liquid storage tank are both connected to a circulation filtering device, and the circulation filtering device includes a circulation pipe connected to the cleaning liquid storage tank / the rinsing liquid storage tank to form a loop, and a circulation pump and a filter arranged on the circulation pipe; The cleaning liquid reservoir and the rinsing liquid reservoir are both connected to a liquid replenishing device, which includes a high and low liquid level sensor arranged in the cleaning liquid reservoir / the rinsing liquid reservoir, a liquid replenishing tube connected to the cleaning liquid reservoir / the rinsing liquid reservoir, and a liquid replenishing pump arranged on the liquid replenishing tube.

7. The machined parts cleaning equipment according to claim 1, characterized in that: The liquid heater includes an electric heating tube and a temperature sensor disposed in the cleaning liquid storage tank / the rinsing liquid storage tank, and a temperature controller electrically connected to the electric heating tube and the temperature sensor.

8. The machined parts cleaning equipment according to claim 1, characterized in that: The hot air circulation system includes a hot air duct and an air heating box, a hot air blower and an air filter arranged on the hot air duct. The top and rear end of the drying outer cylinder are respectively provided with an air inlet and an air outlet, and the two ends of the hot air duct are respectively connected to the air inlet and the air outlet.

9. The machined parts cleaning equipment according to claim 1, characterized in that: The vacuum device includes an exhaust pipe and a vacuum pump arranged on the exhaust pipe. One end of the exhaust pipe is connected to the interior of the cleaning outer cylinder and the interior of the drying outer cylinder through two branch pipes, and valves are arranged on the two branch pipes.

10. A cleaning method, based on the machined parts cleaning device according to any one of claims 1 to 9, characterized in that: The cleaning method comprises the following steps: The washing basket containing the workpieces enters the washing carrier in the washing cylinder under the action of the conveying device, the washing sealing door is closed, the vacuum device draws vacuum on the washing outer cylinder, the washing liquid storage tank pumps the washing liquid to the nozzle through the washing liquid conveying pipeline, and the workpieces in the washing basket are sprayed and cleaned. When the washing liquid covers the washing basket, the spray cleaning is ended, and the ultrasonic vibrating rod is started for vacuum immersion ultrasonic cleaning. After the cleaning is completed, the washing liquid is discharged into the washing liquid storage tank through the washing liquid reflux pipe; then, the compressed gas source conveys compressed air to the nozzle through the gas pipeline to perform the first compressed gas wind shear; After the first compressed gas wind shearing is completed, the vacuum device evacuates the cleaning outer cylinder, and the rinsing liquid storage tank pumps the rinsing liquid to the nozzle through the rinsing liquid delivery pipeline to spray and rinse the workpieces in the washing basket. When the rinsing liquid covers the washing basket, the spray rinsing is ended, and the ultrasonic vibrating rod is started to perform vacuum immersion ultrasonic rinsing. After the rinsing is completed, the rinsing liquid is discharged into the rinsing liquid storage tank through the rinsing liquid reflux pipe; then, the compressed gas source delivers compressed air to the nozzle through the air delivery pipe to perform the second compressed gas wind shearing; After the second compressed gas wind shear is completed, the cleaning sealing door is opened, and the washing basket is transported to the drying carrier in the drying drum through the conveying device, and the drying sealing door is closed, and the hot air circulation system is started to perform hot air circulation and vacuum drying. After the drying is completed, the drying sealing door is opened, and the washing basket is output through the conveying device; Among them, during the processes of spray cleaning, vacuum immersion ultrasonic cleaning, the first compressed gas wind cutting, spray rinsing, vacuum immersion ultrasonic rinsing and the second compressed gas wind cutting, the first motor drives the cleaning carrier to drive the washing basket to rotate or swing; during the hot air circulation and vacuum drying process, the second motor drives the drying carrier to drive the washing basket to rotate or swing.

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