Automatic ice particle air jet cleaning system for aero-engine parts

Abstract

The invention relates to the technical field of ice particle jet flow cleaning, in particular to an automatic ice particle air jet flow cleaning system for aero-engine parts, which comprises a workshop, an integrated ice particle injection machine, an air compressor, a portal frame and a filter, a cross beam of the portal frame penetrates through the upper part of the workshop; an industrial robot is arranged in the middle of a cross beam of the portal frame. A spray gun is installed at the operation end of the industrial robot. The air compressor is connected with the air storage tank through a pipeline, the air storage tank is connected with the integrated ice particle injection machine through a pipeline, and the integrated ice particle injection machine is connected with the spray gun through an ice particle conveying pipe; and a water collecting tank is arranged at the bottom of the inner cavity of the workshop and is connected with a filter through a blow-off pipe. As the industrial robot is arranged for cleaning operation, the cleaning operation is completed in the workshop, and the splashed ice particles can be collected in the water collecting tank at the bottom of the workshop; sewage collected in the water collecting tank is discharged into the filter through the blow-off pipe to be filtered, so that pollution to the environment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ice particle jet cleaning, and particularly to an automated ice particle air jet cleaning system for aero-engine parts. Background Art

[0002] An aero-engine is the power source of an aircraft, and its performance has an important impact on the operation of the aircraft. However, pollutants such as carbon deposits and oil stains are likely to be generated on the components of the aero-engine, resulting in increased fuel consumption and decreased power performance of the engine, and further endangering the flight safety of the aircraft. Therefore, in the maintenance of aero-engines, it is necessary to remove the pollutants on the surfaces of relevant components. However, the existing cleaning technologies have disadvantages such as high pollution, low efficiency, and easy damage to the substrate.

[0003] The ultra-low temperature ice particle air jet cleaning technology uses ice particles moving at high speed to impact pollutants and transfer momentum to overcome the binding force between the pollutants and the substrate, causing cracks and fragmentation of the pollutants. The fragmented pollutants are blown off the substrate surface under the purging action of the high-speed air flow. Since the ultra-low temperature ice particle air jet cleaning technology has advantages such as high efficiency, high flexibility, no pollution, low cost, and no damage to the substrate surface, it can solve the above problems. Therefore, some ice particle air jet cleaning equipment has emerged. For example, the patent with the publication number CN109015390A discloses an ice jet cleaning device, and the patent application with the publication number CN110548729A discloses an ice particle jet surface treatment device.

[0004] Although the ice particle air jet cleaning equipment provided by the above-mentioned prior arts CN110548729A and CN109015390A can complete the production of ice particles and the ejection of ice particle air jets after connecting the gas source, when applying it to the surface of aero-engine parts for large-scale cleaning work, there are still the following problems: 1. The operation process of the ice particle air jet is noisy and the ice particles splash severely, and no suitable cleaning space is provided; 2. There is no suitable treatment method for the sewage and ice sand generated after cleaning. Summary of the Invention

[0005] The main object of the present invention is to propose an automated ice particle air jet cleaning system for aero-engine parts, aiming to solve the above technical problems.

[0006] To achieve the above object, the present invention provides an automated ice particle air jet cleaning system for aero-engine parts, comprising a workshop and an integrated ice particle injector; further comprising an air compressor, a gantry and a filter; the crossbeam of the gantry is inserted through the upper part of the workshop; an industrial robot is arranged in the middle of the crossbeam of the gantry, and a spray gun is installed at the operating end of the industrial robot; the air compressor is connected to an air storage tank through a pipeline, the air storage tank is connected to the integrated ice particle injector through a pipeline, and the integrated ice particle injector is connected to the spray gun through an ice particle delivery pipe; a water collecting tank is arranged at the bottom of the inner cavity of the workshop, and the water collecting tank is connected to the filter through a sewage discharge pipe.

[0007] Preferably, both ends of the crossbeam of the gantry extend out of the workshop, and gantry support columns are arranged at both ends of the crossbeam of the gantry, and the lower ends of the gantry support columns are fixed on the ground outside the workshop.

[0008] Preferably, a sewage discharge outlet is welded at the bottom of the water collecting tank, and the inlet end of the sewage discharge pipe is connected to the sewage discharge outlet.

[0009] Preferably, a workbench and a grid plate are arranged inside the workshop; a load-bearing beam is installed above the water collecting tank, the workbench and the grid plate are both placed on the load-bearing beam above the water collecting tank, and the grid plate surrounds the workbench; water passing holes are arranged in an array on the workbench.

[0010] Preferably, a fixture assembly for clamping the parts to be cleaned is arranged on the workbench.

[0011] Preferably, the fixture assembly comprises three slide rails, and the three slide rails are radially distributed on the top surface of the workbench; T-shaped grooves are arranged on the slide rails; a fixture head and a height adjustment block are installed on each slide rail through T-shaped screws.

[0012] Preferably, the fixture head is a spring pin type flexible fixture head.

[0013] Preferably, the automated ice particle air jet cleaning system further comprises a piston air compressor arranged on the ground outside the workshop; a heating machine is installed on the outer wall of the workshop; an air outlet pipe is placed on the grid plate, and the air outlet pipe surrounds the outer peripheral position of the workbench; a plurality of air outlets are arranged on the air outlet pipe, and the air outlets face the workbench; the piston air compressor is connected to the heating machine through an air inlet pipe; the air outlet pipe is connected to the heating machine through an air delivery pipe.

[0014] Preferably, the heating machine includes a filter screen, a flow guide plate, a heater, a mounting plate, and a moisture absorption and drying layer; the filter screen is installed at the inlet of the heating machine, the flow guide plate is arranged near the filter screen to guide the air flow direction, the heater is installed in the heating chamber of the heating machine through the mounting plate, and the moisture absorption and drying layer is installed at the outlet of the heating machine.

[0015] Preferably, the air compressor, the filter, the air storage tank, and the integrated ice particle injector are all arranged on the ground outside the workshop.

[0016] Due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0017] (1) By adopting the automated ice particle air jet cleaning system provided by the present invention, when in use, the air compressor can pressurize the air to a set pressure and transport it to the air storage tank, and then input it into the integrated ice particle injector through a pipeline. Uniformly sized sheet ice particles are produced in the integrated ice particle injector. Through its internal ice delivery system, they converge with the high-pressure gas input from the air storage tank to form an ice particle air jet, which is input into the spray gun inside the workshop through the ice particle delivery pipe. The spray gun accelerates and sprays the ice particle air jet onto the surface of the aeroengine parts. Since the cleaning operation is completed inside the workshop, the ice particles can be collected in the water collection tank at the bottom of the workshop after splashing; the sewage collected in the water collection tank is discharged into the filter through the sewage discharge pipe for filtration to reduce environmental pollution.

[0018] (2) In the present invention, after the ice particle air jet hits the surface of the part, some of the ice particles melt into water and carry pollutants through the hole array on the surface of the workbench and the gaps of the grid plate and flow into the water tank, but some of the ice particles do not melt and form ice sand mixed with pollutants and accumulate on the upper surface of the workbench. To facilitate the cleaning of the workbench, the warm air supply structure formed by using the piston air compressor, the heating machine, and the air outlet pipe can heat up the entire workshop. At the same time, since the air outlet pipe surrounds the outer periphery of the workbench and the air outlet faces the workbench, the ice sand mixed with pollutant particles accumulated on the workbench can be blown away and its melting can be accelerated and it can flow into the water collection tank. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a schematic diagram of the automated ice particle air jet cleaning system provided by the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the workshop in the present invention;

[0022] Figure 3 It is a schematic diagram of the bottom structure of the workshop in the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the heating machine in the present invention.

[0024] Explanation of the reference numerals in the drawings: 1. Air compressor; 2. Air storage tank; 3. Integrated ice particle injector; 4. Workshop; 40. Fixture assembly; 400. Fixture head; 401. Height adjustment block; 402. Slide rail; 41. Workbench; 42. Piston air compressor; 43. Air inlet pipe; 44. Heating machine; 440. Filter screen; 441. Deflector; 442. Heater; 443. Mounting plate; 444. Moisture absorption and drying layer; 45a. Air delivery pipe; 45b. Air outlet pipe; 46. Air outlet; 47. Water collecting tank; 48. Sewage discharge outlet; 49. Grid plate; 5. Filter; 6. Ice particle delivery pipe; 7. Gantry; 8. Industrial robot; 9. Spray gun. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0026] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] Combined with Figures 1 to 4As shown in the figure, this is a specific embodiment of an automated ice particle air jet cleaning system for aero-engine parts provided by the present invention. The cleaning system includes a workshop 4 and an integrated ice particle injector 3; it also includes an air compressor 1, a gantry 7, and a filter 5; the crossbeam of the gantry 7 is inserted through the upper part of the workshop 4; an industrial robot 8 is arranged in the middle of the crossbeam of the gantry 7, and a spray gun 9 is installed at the operating end of the industrial robot 8. Specifically, the spray gun 9 is installed on the industrial robot 8 through a flange. The air compressor 1 is connected to a gas storage tank 2 through a pipeline, the gas storage tank 2 is connected to the integrated ice particle injector 3 through a pipeline, the integrated ice particle injector 3 is connected to the spray gun 9 through an ice particle delivery pipe 6; a water collecting tank 47 is arranged at the bottom of the inner cavity of the workshop 4, and the water collecting tank 47 is connected to the filter 5 through a sewage discharge pipe. The integrated ice particle injector 3 can produce sheet ice particles, which converge with the high-pressure gas input from the gas storage tank 2 through its internal ice delivery system to form an ice particle air jet, and are input into the spray gun 9 inside the workshop 4 through the ice particle delivery pipe 6. The spray gun 9 accelerates and sprays the ice particle air jet onto the surface of the aero-engine parts.

[0029] Combined with Figure 1 and Figure 2 As shown in the figure, both ends of the crossbeam of the gantry 7 extend out of the workshop 4, and gantry support columns are arranged at both ends of the crossbeam of the gantry 7. The lower ends of the gantry support columns are fixed on the ground outside the workshop 4. Installing the gantry support columns on the ground outside the workshop 4 can avoid the gantry support columns occupying the internal space of the workshop 4. Similarly, the air compressor 1, the filter 5, the gas storage tank 2, and the integrated ice particle injector 3 are all arranged on the ground outside the workshop 4, also to avoid occupying the internal space of the workshop 4.

[0030] Combined with Figure 2 As shown in the figure, in order to facilitate the discharge of the sewage collected in the water collecting tank 47, a sewage discharge port 48 is welded at the bottom of the water collecting tank 47, and the water inlet end of the sewage discharge pipe is connected to the sewage discharge port 48.

[0031] Combined with Figure 2 and Figure 3 As shown in the figure, a workbench 41 and a grid plate 49 are arranged inside the workshop 4; a load-bearing beam is installed above the water collecting tank 47. The workbench 41 and the grid plate 49 are both placed on the load-bearing beam above the water collecting tank 47, and the grid plate 49 surrounds the workbench 41. Water passing holes are arranged in an array on the workbench 41. Further, a fixture assembly 40 for clamping the parts to be cleaned is arranged on the workbench 41. Further, the water passing holes on the workbench 41 are threaded holes, which can play a role in leaking water and can also be used to install the fixture assembly 40.

[0032] In this embodiment, the fixture assembly 40 includes three slide rails 402, and the three slide rails 402 are radially distributed on the top surface of the workbench 41; T-shaped grooves are provided on the slide rails 402; a fixture head 400 and a height adjustment block 401 are mounted on each slide rail 402 by T-shaped screws. In order to avoid scratching the aero-engine parts to be cleaned, the fixture head 400 is a spring-pin type flexible fixture head, and the spring-pin type fixture head can automatically adjust the clamping force and contact points according to the shape of the workpiece, reducing damage to the surface of the workpiece.

[0033] Combined with Figures 3 to 4 As shown, the automated ice particle air jet cleaning system further includes a piston air compressor 42 disposed on the ground outside the workroom 4; a heating machine 44 is installed on the outer wall of the workroom 4; an air outlet pipe 45b is placed on the grid plate 49, and the air outlet pipe 45b surrounds the outer peripheral position of the workbench 41; a plurality of air outlets 46 are provided on the air outlet pipe 45b, and the air outlets 46 face the workbench 41; the piston air compressor 42 is connected to the heating machine 44 through an air inlet pipe 43; the air outlet pipe 45b is connected to the heating machine 44 through an air delivery pipe 45a. Further, the heating machine 44 includes a filter screen 440, a flow guide plate 441, a heater 442, a mounting plate 443, and a moisture absorption and drying layer 444; the filter screen 440 is installed at the inlet of the heating machine 44, the flow guide plate 441 is disposed near the filter screen 440 for guiding the air flow direction, the heater 442 is installed in the heating chamber of the heating machine 44 through the mounting plate 443, and the moisture absorption and drying layer 444 is installed at the outlet of the heating machine 44.

[0034] The working principle of the automated ice particle air jet cleaning system provided in this embodiment is as follows:

[0035] The air compressor 1 pressurizes the air to a gauge pressure of 0.7 MPa and inputs it into the gas storage tank 2 through a pipeline for storage. Then, the high-pressure gas in the gas storage tank 2 is input into the integrated ice particle injector 3 through a pipeline. The ice-making system in the integrated ice particle injector 3 makes uniformly sized sheet ice particles, which converge with the high-pressure gas input from the gas storage tank 2 through its internal ice delivery system to form an ice particle air jet, and is input into the spray gun 9 inside the workroom 4 through the ice particle delivery pipe 6. The spray gun 9 accelerates and sprays the ice particle air jet onto the surface of the aero-engine parts to be cleaned.

[0036] During cleaning, the aero-engine parts to be cleaned are installed on the fixture assembly 40. The height adjustment block 401 can be adjusted to an appropriate position and height on the slide rail 402 so that the fine structures on the aero-engine parts do not interfere with the workbench 41. The fixture head 400 can also be adjusted to an appropriate position on the slide rail 402 to clamp and position the aero-engine parts. Since the fixture head 400 is a spring-pin type flexible fixture head, its spring pins contact and fit with the irregular surface of the aero-engine parts, which can not only reduce damage to the workpiece surface but also provide clamping reliability.

[0037] The industrial robot 8 drives the spray gun 9 to perform full-coverage cleaning on the surface of the target aero-engine parts by executing a predetermined program. After the ice particle air jet hits the part surface, some ice particles melt into water and carry pollutants through the water holes on the workbench 41 and the gaps in the grid plate 49 and flow into the water collecting tank 47. Some ice particles do not melt and form ice sand mixed with pollutants and accumulate on the upper surface of the workbench 41. To clean the surface of the workbench 41, the piston air compressor 42 compresses air to 0.2 MPa and inputs the high-pressure gas into the heater 44 through the air inlet pipe 43. The filter screen 440 filters and removes impurities and dust from the air. The deflector 441 introduces the air after removing impurities to the heater 443 in the heating chamber for heating, and then enters the air delivery pipe 45a through the moisture absorption and drying layer 444 for drying and secondary filtration, and is then discharged into the workroom 4 through the air outlet 46 on the air outlet pipe 45b. Therefore, the warm air supply structure formed by using the piston air compressor 42, the heater 44 and the air outlet pipe 45b can raise the temperature of the entire workroom 4. At the same time, since the air outlet pipe 45b surrounds the outer peripheral position of the workbench 41 and the air outlet 46 faces the workbench 41, the ice sand mixed with pollutants accumulated on the workbench 41 can be blown away and its melting can be accelerated and it flows into the water collecting tank 47.

[0038] The sewage in the water collecting tank 47 is discharged from the sewage outlet 48 and discharged into the filter 5 through the sewage discharge pipe. After oil-water separation and impurity filtration and adsorption in the filter 5 to meet the discharge standard, it is discharged. The structure of the filter 5 is a conventional existing technology and will not be elaborated here.

[0039] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An automated ice particle air jet cleaning system for aeroengine parts, comprising a workshop (4) and an integrated ice particle injector (3); characterized in that, It also includes an air compressor (1), a gantry (7) and a filter (5); the cross beam of the gantry (7) penetrates through the upper part of the working chamber (4); An industrial robot (8) is arranged in the middle of the cross beam of the gantry (7), and a spray gun (9) is installed at the operating end of the industrial robot (8); The air compressor (1) is connected to an air storage tank (2) through a pipeline, the air storage tank (2) is connected to an integrated ice pellet injector (3) through a pipeline, and the integrated ice pellet injector (3) is connected to the spray gun (9) through an ice pellet delivery pipe (6); A water collecting tank (47) is arranged at the bottom of the inner cavity of the working chamber (4), and the water collecting tank (47) is connected to the filter (5) through a sewage discharge pipe.

2. The automated ice particle air jet cleaning system for aeroengine parts according to claim 1, wherein, Both ends of the cross beam of the gantry (7) extend out of the working chamber (4), and gantry support columns are arranged at both ends of the cross beam of the gantry (7), and the lower ends of the gantry support columns are fixed on the ground outside the working chamber (4).

3. An automated ice particle air jet cleaning system for aeroengine parts as claimed in claim 1, wherein, A sewage discharge outlet (48) is welded at the bottom of the water collecting tank (47), and the water inlet end of the sewage discharge pipe is connected to the sewage discharge outlet (48).

4. An automated ice particle air jet cleaning system for aero-engine parts as claimed in claim 1, wherein, A workbench (41) and a grating (49) are arranged inside the working chamber (4); a load-bearing beam is installed above the water collecting tank (47), the workbench (41) and the grating (49) are both placed on the load-bearing beam above the water collecting tank (47), and the grating (49) surrounds the workbench (41); water passing holes are arranged in an array on the workbench (41).

5. The automated ice particle air jet cleaning system for aeroengine parts according to claim 4, characterized in that, A fixture assembly (40) for clamping parts to be cleaned is arranged on the workbench (41).

6. The automated ice particle air jet cleaning system for aeroengine parts according to claim 5, characterized in that The fixture assembly (40) includes three slide rails (402), and the three slide rails (402) are radially distributed on the top surface of the workbench (41); T-shaped grooves are arranged on the slide rails (402); a fixture head (400) and a height adjusting block (401) are installed on each slide rail (402) through T-shaped screws.

7. The automated ice particle air jet cleaning system for aero-engine parts according to claim 6, wherein The fixture head (400) is a spring needle type flexible fixture head.

8. An automated ice particle air jet cleaning system for aeroengine parts according to claim 4, characterized in that, It also includes a piston air compressor (42) arranged on the ground outside the working chamber (4); a heating machine (44) is installed on the outer wall of the working chamber (4); An air outlet pipe (45b) is placed on the grating (49), and the air outlet pipe (45b) surrounds the outer periphery of the workbench (41); a plurality of air outlet openings (46) are arranged on the air outlet pipe (45b), and the air outlet openings (46) face the workbench (41); The piston air compressor (42) is connected to the heating machine (44) through an air inlet pipe (43); the air outlet pipe (45b) is connected to the heating machine (44) through an air delivery pipe (45a).

9. The automated ice particle air jet cleaning system for aeroengine parts according to claim 8, characterized in that, The heating machine (44) includes a filter screen (440), a flow guide plate (441), a heater (442), a mounting plate (443), and a moisture absorption and drying layer (444); the filter screen (440) is installed at the inlet of the heating machine (44), the flow guide plate (441) is arranged near the filter screen (440) for guiding the air flow direction, the heater (442) is installed in the heating chamber of the heating machine (44) through the mounting plate (443), and the moisture absorption and drying layer (444) is installed at the outlet of the heating machine (44).

10. An automated ice particle air jet cleaning system for aeroengine parts as described in claim 1, characterized in that, The air compressor (1), the filter (5), the gas storage tank (2), and the integrated ice particle injector (3) are all arranged on the ground outside the workroom (4).

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