A dust removal and return air device and method for an aircraft parts processing table

Abstract

This invention relates to the field of dust removal technology for machining tables, and discloses a dust removal and return air device and method for aircraft parts machining tables, solving the problem of poor dust removal effect. It includes a dust collection hood, with a dust collection fan fixed to the top of the hood via a dust collection pipe. A dust collector is located at the outlet of the dust collection fan, and a dust collection bin is located at the bottom of the dust collector. A PTFE membrane filter cartridge is located at the right end of the dust collector, and a HEPA terminal filter box is located at the right end of the PTFE membrane filter cartridge. A separator pipe is located at the right end of the HEPA terminal filter box, and a variable diameter air duct is located inside the separator pipe. A noise reduction pipe is located at the right end of the separator pipe. This device, through a reversing motor, an adjusting motor, a main lifting rod, a moving rod motor, a moving rod, an auxiliary lifting rod, and a connecting block motor, works in conjunction with the strip-shaped exhaust channels on the edge of the fitter's workbench to form a three-dimensional collection network, dynamically covering the grinding points, thereby allowing the dust collection hood to reach any position on the grinding table.

Description

Technical Field

[0001] This invention belongs to the field of dust removal technology for machining tables, specifically a dust removal and return air device and method for aircraft parts machining tables. Background Technology

[0002] Aircraft components are often complex products with high technical standards and acceptance requirements. Currently, the return air system in dusty work areas mainly uses existing technologies such as centralized dust collection return air systems, wet dust collectors, or single-unit filtration devices. With the continuous increase in aircraft production volume, traditional centralized systems, while capable of handling dust from multiple workstations, suffer from insufficient return air cleanliness, a high risk of titanium powder explosion, and potential health hazards for fitters. Wet dust collectors can easily lead to hydrogen production from titanium powder upon contact with water, posing secondary safety risks. Single-unit filtration devices struggle to meet aerospace-grade cleanliness requirements. Existing technologies generally suffer from low dust capture rates, lack of explosion-proof measures, high energy consumption, and imbalanced positive and negative pressure, failing to meet the safety and energy-saving requirements of aerospace manufacturing.

[0003] However, existing dust removal devices have insufficient dynamic dust collection, resulting in poor dust removal efficiency; at the same time, existing dust removal devices pose an explosion risk, threatening the lives of workers, and fail to meet cleanliness standards, thus polluting the environment; they also waste a lot of energy. Therefore, this invention proposes a dust removal and return air device and method for aircraft parts processing tables to solve the above problems. Summary of the Invention

[0004] Purpose of the invention:

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides a dust removal and return air device and method for an aircraft parts processing table, which effectively solves the problems mentioned in the background art.

[0006] Technical solution:

[0007] A dust removal and return air device for an aircraft parts processing table includes a reversing motor mounted on the bottom surface. A main lifting rod is located at the top of the reversing motor, and a moving rod is hinged to the top of the main lifting rod. A secondary lifting rod is hinged to the left end of the moving rod, and a connecting block is hinged to the bottom of the secondary lifting rod. A dust collection hood is located at the left end of the connecting block. A dust collection fan is fixed to the top of the dust collection hood via a dust collection pipe. A dust collector inlet pipe is fixed to the outlet of the dust collection fan. A dust collector is fixed to the right end of the dust collector inlet pipe. A dust collection bin is located at the bottom of the dust collector. A ring-shaped pipe is fixed to the top of the dust collector via several water spray pipes. A water tank is located at the rear end of the dust collection bin, and a nitrogen tank is located at the right end of the water tank. An exhaust pipe is located inside the dust collector. A centrifugal fan is fixed to the top of the air outlet pipe via a delivery pipe. A PTFE membrane filter cartridge is fixed to the right end of the centrifugal fan. The PTFE membrane filter cartridge contains a filter membrane, and a cleaning head is located inside the filter membrane. A high-pressure cleaning pump is fixed to the rear end of the cleaning head. A HEPA terminal filter box is located at the right end of the PTFE membrane filter cartridge. A HEPA filter plate is located inside the HEPA terminal filter box. A partition pipe is located at the right end of the HEPA terminal filter box. A temperature regulating pipe is located inside the partition pipe. A variable diameter air duct is located inside the temperature regulating pipe. An expansion pipe is fixed to the right end of the partition pipe via a pipe. A noise reduction pipe is fixed to the right end of the expansion pipe. A perforated plate is located inside the noise reduction pipe. Sound-absorbing cotton is located at the right end of the perforated plate.

[0008] Preferably, a control cabinet is fixed on the ground, a power supply box is fixed to the right end of the control cabinet, a reversing motor is fixed on the ground with a reversing head rotatably connected to its top, an adjusting motor is fixed to the front end of the reversing head, the adjusting motor is rotatably connected to the main lifting rod at its rear end, a moving rod motor is fixed to the front end of the top of the main lifting rod, the moving rod motor is rotatably connected to the moving rod, an auxiliary lifting rod motor is fixed to the front left side of the moving rod, the auxiliary lifting rod motor is rotatably connected to the auxiliary lifting rod, a connecting block motor is fixed to the front bottom of the auxiliary lifting rod, the connecting block motor is rotatably connected to the connecting block, positioning rings are fixed to the ends of the fixed ends of the auxiliary lifting rod, the moving rod, and the main lifting rod, a positioning plate is fixed to the left end of the connecting block, a vacuum camera is fixed to the top of the positioning plate, and the positioning plate is fixedly connected to the vacuum hood.

[0009] Preferably, a plurality of the positioning rings are slidably connected to the suction pipe, a suction valve is fixed at the bottom of the suction fan, a water curtain pipe is fixed at the top of the suction valve, a water curtain trough is fixed at the bottom of the water curtain pipe, a water curtain outlet is fixed at the bottom of the dust collector inlet pipe, the bottom of the water curtain outlet is fixedly connected to the dust collection bucket through a connecting pipe, a water curtain valve is fixed at the rear end of the water curtain pipe, a water curtain pump is fixed at the rear end of the water curtain valve, and a water supply pipe is fixed at the rear end of the water curtain pump.

[0010] Preferably, a stirring motor is fixed inside the dust collection bin, a stirring plate is rotatably connected to the bottom of the stirring motor, a sewage valve is fixed to the front end of the dust collection bin, an anti-backflow hopper is fixed to the top of the dust collection bin, a sewage level sensor is fixed to the top of the anti-backflow hopper, a dust removal funnel is fixed to the top of the dust collection bin through a pipe, the top of the dust removal funnel is fixedly connected to the dust collector, an infrared spark detector is fixed to the front end of the dust collector, and a light scattering dust meter is fixed to the left end of the infrared spark detector.

[0011] Preferably, the dust collector has several nozzles inside, each nozzle is fixedly connected to the water spray pipe outside it, a dust suppression valve is fixed to the rear end of the annular pipe, a dust suppression pipe is fixed to the rear end of the dust suppression valve, the dust suppression pipe is fixedly connected to the water supply pipe, a water outlet valve is fixed to the rear end of the bottom of the dust suppression pipe, a dust suppression pump is fixed to the rear end of the water outlet valve, the dust suppression pump is fixedly connected to the water tank at its rear end, a nitrogen pipe is also fixed to the rear end of the dust collector, a nitrogen valve is fixed to the bottom of the nitrogen pipe, a nitrogen pump is fixed to the rear end of the nitrogen valve, and the nitrogen pump is fixedly connected to the nitrogen tank at its rear end.

[0012] Preferably, the dust collector is further provided with an exhaust valve at the top, which is fixedly connected to the conveying pipe. A dust collection box is fixed at the bottom of the PTFE membrane filter cartridge, and a door is slidably connected to the front end of the dust collection box. Two filter cartridge motors are fixed at the left end of the PTFE membrane filter cartridge, and a filter cartridge door is rotatably connected to the right end of each filter cartridge motor. A filter membrane positioning plate is fastened to the left end of the PTFE membrane filter cartridge through a filter cartridge connecting rod. The filter membrane positioning plate is fixedly connected to the filter membrane at its right end. A cleaning plate is provided inside the filter membrane. The cleaning plate is fixedly connected to the cleaning head. A cleaning camera is fixed to the left end of the cleaning plate, and a cleaning rod is fixed to the right end of the cleaning plate. A cleaning motor is rotatably connected to the right end of the cleaning rod, and the cleaning motor is fixedly connected to the pipe at the left end of the HEPA terminal filter box.

[0013] Preferably, a filter membrane connecting flange is fixed to the right end of the filter membrane, and a conveying flange is fastened to the cleaning motor by bolts. The conveying flange is fixedly connected to the pipe at the left end of the HEPA terminal filter box. A sealing flange is tightly fitted to the right end of the conveying flange, and a filter cartridge connecting flange is fastened to the left end of the sealing flange. The filter cartridge connecting flange is fixedly connected to the PTFE membrane filter cartridge. The conveying flange is fastened to the sealing flange by bolts. A replacement plate is slidably connected to the front end of the HEPA terminal filter box. Gas flow meters are installed in the pipes at both ends of the HEPA terminal filter box. Air pumps are fixed to both ends of the HEPA terminal filter box. An air valve is fixed to the rear end of each air pump, and each air valve is fixedly connected to the pipes at both ends of the HEPA terminal filter box.

[0014] Preferably, the right-end pipe of the HEPA terminal filter box is fixedly connected to the variable diameter duct, the variable diameter duct is fixedly connected to the separator pipe, a return valve is fixedly connected to the right front end of the separator pipe via a pipeline, a radiator is fixedly connected to the front end of the return valve, a temperature-regulating water tank is fixedly connected to the left end of the radiator via a one-way valve, a water tank level gauge is fixedly connected to the top of the temperature-regulating water tank, a temperature-regulating pump is fixedly connected to the left end of the temperature-regulating water tank, a temperature-regulating valve is fixedly connected to the left end of the temperature-regulating pump, a temperature-regulating box is fixedly connected to the left end of the temperature-regulating valve, a temperature-regulating box thermometer is fixedly connected to the top of the temperature-regulating box, a heating plate is fixedly connected to the inside of the temperature-regulating box, a water pump is fixedly connected to the rear end of the temperature-regulating box, a water valve is fixedly connected to the rear end of the water pump, and the water valve is fixedly connected to the left end of the temperature-regulating pipe via a pipeline.

[0015] Preferably, a gas thermometer is fixed on the right end of the separator pipe, and a carbon dioxide concentration meter is provided on the right end of the gas thermometer. The noise reduction pipe is fastened to the perforated plate by bolts, and the sound-absorbing cotton is fastened to the outlet and the right end of the noise reduction pipe by bolts.

[0016] The present invention also provides a method for dust removal and return air of an aircraft parts processing table, based on the dust removal and return air device for an aircraft parts processing table as described above, comprising the following steps:

[0017] Step 1: When using this device, the staff installs the entire device according to the requirements. At this time, the control cabinet controls the reversing motor, adjusting motor, main lifting rod, moving rod motor, moving rod, auxiliary lifting rod and connecting block motor to work with the strip exhaust groove on the edge of the fitter's workbench to form a three-dimensional capture network, dynamically covering the grinding points, so that the dust hood can reach any position on the grinding table, thus ensuring the accuracy of dust collection.

[0018] Step Two: The control cabinet further controls the dust pump and water outlet valve to pump clean water from the water tank to the dust collection pipe. Then, the control cabinet controls the water curtain valve and water curtain pump to work together to transport clean water through the water supply pipe to the water curtain pipe, and then form a water curtain through the water curtain trough. At this time, the water inside the dust collector inlet pipe is transported to the dust collection bin through the water curtain outlet and connecting pipe. At this time, the control cabinet controls the dust suction fan and dust suction valve to work together to transport the dust on the dust suction hood to the dust collector through the dust suction pipe. At this time, the dust enters the dust collection bin with the water curtain. At the same time, due to the action of the dust suction fan and the dust collector inlet pipe, the dust and airflow generate centrifugal force inside the dust collector. The control cabinet further controls the dust collection valve to open, so that clean water is transported to the ring pipe, and then transported to the nozzle through the water spray pipe. The water is then sprayed out through the nozzle, which increases the weight of the dust, so that the dust falls into the dust collection bin through the dust collection funnel. At the same time, the clean gas reaches the exhaust pipe.

[0019] Step 3: The control cabinet monitors the dust concentration inside the dust collector using a light scattering dust meter. The control cabinet then controls the nitrogen pump and nitrogen valve to supply nitrogen into the dust collector, thereby maintaining the dust concentration inside the dust collector within a certain range. Furthermore, an infrared spark detector is used to detect sparks inside the dust collector, thereby controlling the water spray frequency of the nozzles to achieve the purpose of explosion prevention.

[0020] Step 4: The control cabinet further controls the centrifugal fan and the exhaust valve so that the clean gas inside the exhaust pipe is transported through the delivery pipeline to the PTFE membrane filter cartridge. At this time, due to the function of the filter membrane, the gas can be further purified. At the same time, the purified gas is transported to the HEPA terminal filter box, and then purified again through the HEPA filter plate, thereby outputting clean gas.

[0021] Step 5: If the gas flow rate monitored by the left gas flow meter is low, the control cabinet will control the cleaning motor, cleaning rod and cleaning high-pressure pump to blow out the dust from the filter membrane. At the same time, the filter cartridge motor will control the filter cartridge door to open and transport the dust into the dust collection box. If the gas flow rate of the left gas flow meter is high and the gas flow rate of the right gas flow meter is low, the control cabinet will alarm and the staff will replace the HEPA filter plate.

[0022] Step Six: Further gas is transported through pipelines to the inside of the variable diameter duct. The air pressure is balanced using Bernoulli's principle. The temperature of the gas output from the variable diameter duct is monitored by a gas thermometer. At this time, the staff controls the supply of clean water from the temperature-regulating water tank to the temperature-regulating box according to the needs. The water is then heated by a heating plate and sent to the temperature-regulating pipe, thereby changing the water temperature inside the variable diameter duct. At the same time, the carbon dioxide concentration meter monitors the carbon dioxide content of the gas output from the variable diameter duct. If the carbon dioxide content is high, the control cabinet controls the air pump and air valve on the right end to allow fresh air to enter the inside of the variable diameter duct, thereby balancing the carbon dioxide concentration.

[0023] Step 7: Further gas is delivered to the expansion tube, and then to the noise reduction tube. Due to the effects of the expansion tube, perforated plate and sound-absorbing cotton, noise reduction can be achieved, thereby preventing noise pollution and outputting clean gas. Furthermore, when the dust collection bin is full of sewage, the control cabinet alarms, and at the same time, the staff controls the sewage valve to open and discharge the sewage.

[0024] Beneficial effects:

[0025] (1) This device uses a reversing motor, adjusting motor, main lifting rod, moving rod motor, moving rod, auxiliary lifting rod and connecting block motor to cooperate with the strip exhaust groove on the edge of the fitter's workbench to form a three-dimensional collection network, dynamically covering the grinding points, so that the dust hood can reach any position on the grinding table, thereby ensuring the accuracy of dust collection. The dust can be transported to the dust collector through the dust collection pipe by the dust collection fan and dust collection valve.

[0026] (2) This device pumps clean water from the water tank to the dust removal pipe through the dust removal pump and the water outlet valve. Then the control cabinet controls the water curtain valve and the water curtain pump to work together to transport clean water to the water curtain pipe through the water supply pipe. Then a water curtain is formed through the water curtain trough. At this time, the sewage water inside the dust collector inlet pipe is transported to the dust collection bucket through the water curtain outlet and the connecting pipe. Thus, while removing dust, the titanium powder in the dust is pre-wetted, thereby achieving the purpose of anti-static, thus ensuring the dust removal effect while achieving the purpose of explosion prevention.

[0027] (3) This device monitors the dust concentration inside the dust collector by using a light scattering dust meter, and further supplies nitrogen to the dust collector by using a nitrogen pump and nitrogen valve, so that the dust concentration inside the dust collector is maintained within a certain range. Furthermore, it detects sparks inside the dust collector by using an infrared spark detector, thereby controlling the spray frequency of the nozzles to achieve the purpose of explosion prevention, thus ensuring the safety of the entire device and ensuring the dust removal effect.

[0028] (4) The gas of this device is transported to the inside of the variable diameter air duct through the pipeline. The wind pressure is balanced by Bernoulli's principle. The temperature of the gas output from the variable diameter air duct is further monitored by the gas thermometer. At this time, the staff controls the clean water in the temperature regulating water tank to be transported to the temperature regulating box according to the needs. After being heated by the heating plate, it is transported to the temperature regulating pipe, thereby changing the water temperature inside the variable diameter air duct. This allows the air temperature to be controlled, which facilitates discharge and allows the ambient temperature to be changed according to the needs, thereby saving resources and ensuring the comfort of the environment. At the same time, the carbon dioxide content of the gas output from the variable diameter air duct is monitored by the carbon dioxide concentration meter. If the carbon dioxide content is high, the fresh air is brought into the inside of the variable diameter air duct through the air pump and air valve at the right end, thereby balancing the carbon dioxide concentration and preventing the environment from being oxygen-deficient.

[0029] (5) This device can ensure the accuracy of filtering gas impurities by using HEPA filter plates and filter membranes, and further ensure the filtration effect. The cleaning head and cleaning high-pressure pump can blow the dust on the outer surface of the filter membrane into the PTFE membrane filter cartridge, and then discharge it through the filter cartridge door, which makes it easy to clean the filter membrane and ensures the cleanliness of the filter membrane, thus ensuring the filtration effect. The air pump and air valve at the left end make it easy to clean the filter membrane with the cleaning head. The gas is then delivered to the expansion tube and then to the noise reduction tube. Due to the function of the expansion tube, perforated plate and sound-absorbing cotton, noise reduction can be achieved, thus preventing noise pollution. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall device;

[0032] Figure 2 This is a top view of the entire device;

[0033] Figure 3 This is a schematic diagram of the left end of the conveying pipeline of this device;

[0034] Figure 4 This is a schematic diagram of the top of the commutator motor in this device;

[0035] Figure 5 This is a schematic diagram of the top of the dust collection bin of this device;

[0036] Figure 6 This is a schematic diagram of the front end of the water tank in this device;

[0037] Figure 7 This is a schematic diagram of the upper part of the dust collector in this device;

[0038] Figure 8 This is a schematic diagram of the internal structure of the dust collector in this device;

[0039] Figure 9 This is a schematic diagram of the upper part of the dust collector inside this device;

[0040] Figure 10 This is a cross-sectional view of the dust collector inlet of this device;

[0041] Figure 11 This is a schematic diagram of the water curtain tank for this device;

[0042] Figure 12 This is a schematic diagram of the right end of the outlet valve of this device;

[0043] Figure 13 This is a schematic diagram of the interior of the PTFE membrane filter cartridge of this device;

[0044] Figure 14 This is a cross-sectional schematic diagram of the PTFE membrane filter cartridge of this device;

[0045] Figure 15 This is a schematic diagram of the interior of the HEPA terminal filter box of this device;

[0046] Figure 16 This is a schematic diagram of the right end of the HEPA terminal filter box of this device;

[0047] Figure 17 This is a schematic diagram of the interior of the temperature control chamber of this device;

[0048] Figure 18 This is a schematic diagram of the interior of the partition tube of this device;

[0049] Figure 19 This is a schematic diagram of the right end of the noise reduction tube in this device;

[0050] Figure 20 This is a cross-sectional view of the noise reduction tube of this device.

[0051] In the diagram: 1-Ground; 2-Dust hood; 3-Dust collector; 4-Conveying pipe; 5-Ring pipe; 6-PTFE membrane filter cartridge; 7-HEPA terminal filter box; 8-Separation pipe; 9-Noise reduction pipe; 101-Control cabinet; 102-Power supply box; 103-Reversing motor; 104-Reversing head; 105-Main lifting rod; 106-Moving rod; 107-Secondary lifting rod; 108-Connecting block; 109-Positioning plate; 110-Dust suction camera; 111-Adjusting motor; 112-Moving rod motor; 113-Secondary lifting rod motor; 114-Connecting block motor; 115-Positioning ring; 201-Dust suction pipe; 202 - Dust collector fan; 203 Dust collection valve; 204 Dust collector inlet pipe; 205 Water curtain pipe; 206 Water curtain outlet; 207 Connecting pipe; 208 Water curtain valve; 209 Water curtain pump; 210 Water supply pipe; 211 Water curtain tank; 301 Infrared spark detector; 302 Light scattering dust meter; 303 Dust collection funnel; 304 Dust collection bin; 305 Anti-backflow hopper; 306 Wastewater level sensor; 307 Wastewater valve; 308 Stirring motor; 309 Stirring plate; 401 Air outlet valve; 402 Centrifugal fan; 403 Air outlet pipe; 501 Water tank; 502 Nitrogen tank; 503 Dust suppression pump; 504-Water outlet valve; 505-Dust suppression pipe; 506-Dust suppression valve; 507-Nitrogen pump; 508-Nitrogen valve; 509-Nitrogen pipe; 510-Water spray pipe; 511-Spray head; 601-Dust collection box; 602-Box door; 603-Filter cartridge motor; 604-Filter cartridge door; 605-Filter cartridge connecting rod; 606-Filter membrane positioning plate; 607-Filter membrane; 608-Cleaning plate; 609-Cleaning head; 610-Cleaning camera; 611-Cleaning high-pressure pump; 612-Cleaning rod; 613-Cleaning motor; 614-Filter membrane connecting flange; 615-Filter cartridge connecting flange; 701-Replacement plate; 702-Gas Pump; 703-Gas valve; 704-Gas flow meter; 705-Transfer flange; 706-Sealing flange; 707-HEPA filter plate; 801-Temperature control pipe; 802-Temperature control box; 803-Temperature control box thermometer; 804-Heating plate; 805-Water pump; 806-Water valve; 807-Temperature control water tank; 808-Water tank level gauge; 809-Temperature control pump; 810-Temperature control valve; 811-Radiator; 812-Return valve; 813-Reducing duct; 901-Outlet; 902-Gas thermometer; 903-Carbon dioxide concentration meter; 904-Expansion pipe; 905-Perforated plate; 906-Sound absorbing cotton. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0054] In the description of this invention, it should be noted that the directions or positional relationships indicated by terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing and simplifying the invention, and should not be construed as limiting the invention. Furthermore, the use of ordinal numbers (e.g., "first and second," etc.) is for distinguishing objects and is not limited to this order, and should not be construed as indicating or implying relative importance.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, encompassing both direct connection and indirect connection via an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0056] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0058] Example 1, by Figures 1-3 , Figures 7-8 , Figure 13、 Figures 18-19The present invention discloses a dust removal and return air device for an aircraft parts processing table. A ground surface 1 supports the entire device. A reversing motor 103 is fixed on the ground surface 1. The reversing motor 103 can drive the reversing head 104 to rotate. A main lifting rod 105 is provided at the top of the reversing motor 103. The main lifting rod 105 is telescopic, thereby driving the moving rod 106 to rise and fall. The moving rod 106 is hinged to the top of the main lifting rod 105. The moving rod 106 is telescopic, thereby driving the auxiliary lifting rod 107 to move. The auxiliary lifting rod 107 is hinged to the left end of the moving rod 106. The auxiliary lifting rod 107 is telescopic, thereby driving the connecting block 108 to move. A connecting block 108 is hinged to the bottom of the auxiliary lifting rod 107. Connecting block 108, made of alloy material, is used to position the positioning plate 109. A dust suction hood 2, made of rubber, is located at the left end of the connecting block 108 for easy dust collection. A dust suction fan 202, made of flexible material and retractable, is fixed to the top of the dust suction hood 2 via a dust suction pipe 201, allowing for easy movement of the dust suction hood 2. The dust suction fan 202 and the dust suction valve 203 work together to transport dust and gas to the dust collector inlet pipe 204. The outlet of the dust suction fan 202 is fixed to the dust collector inlet pipe 204, made of alloy material. The dust collector inlet pipe 204 is tangent to the dust collector 3. The dust collector 3 is fixed to the right end of the inlet pipe 204. The dust collector 3 is made of alloy material and facilitates dust removal. A dust collection bin 304, also made of alloy material, is located at the bottom of the dust collector 3. A ring pipe 5, made of alloy material, is fixed to the top of the dust collector 3 via several water spray pipes 510. The ring pipe 5 provides clean water to the water spray pipes 510. A water tank 501, made of alloy material, is located at the rear end of the dust collection bin 304. The water tank 501 holds clean water. A nitrogen tank 502, located at the right end of the water tank 501, is used for... The dust collector 3 contains nitrogen gas and has an internal outlet pipe 403 made of alloy material. The outlet pipe 403 facilitates the output of clean gas. A centrifugal fan 402 is fixed to the top of the outlet pipe 403 via a conveying pipe 4. The centrifugal fan 402, in conjunction with the outlet valve 401, transports the gas inside the dust collector 3 to the PTFE membrane filter cartridge 6. A PTFE membrane filter cartridge 6, also made of alloy material, is fixed to the right end of the centrifugal fan 402. The PTFE membrane filter cartridge 6 is used to position the filter membrane positioning plate 606. A filter membrane 607, made of PTFE material, is located inside the PTFE membrane filter cartridge 6.The filter membrane 607 is used to filter the gas supplied into the PTFE-coated filter cartridge 6 via the conveying pipe 4, thereby ensuring the cleanliness of the gas. A cleaning head 609 is provided inside the filter membrane 607. The cleaning head 609, in conjunction with the high-pressure cleaning pump 611, can blow dust from the outer surface of the filter membrane 607 into the PTFE-coated filter cartridge 6, and then discharge it through the filter cartridge door 604, thus facilitating the cleaning of the filter membrane 607 and ensuring its cleanliness, thereby guaranteeing the filtration effect. The high-pressure cleaning pump 611 is fixed to the rear end of the cleaning head 609. The PTFE membrane filter cartridge 6 has a HEPA terminal filter box 7 at its right end. The HEPA terminal filter box 7 is made of alloy material and is used to position the HEPA filter plate 707. The HEPA filter plate 707, made of microfiber material, is located inside the HEPA terminal filter box 7. The HEPA filter plate 707, in conjunction with the filter membrane 607, ensures the accuracy of filtering gas impurities and further guarantees the filtration effect. A separator tube 8 is located at the right end of the HEPA terminal filter box 7. Made of heat-insulating material, the partition tube 8 protects the temperature-regulating tube 801. The temperature-regulating tube 801 is located inside the partition tube 8. By circulating water of different temperatures inside the temperature-regulating tube 801, the gas temperature inside the variable-diameter duct 813 can be changed, thereby controlling the air temperature. This facilitates ventilation while allowing for adjustments to the ambient temperature as needed, thus saving resources. The variable-diameter duct 813 is located inside the temperature-regulating tube 801. The variable-diameter duct 813 is made of alloy material and employs a variable-diameter duct design, utilizing Bernoulli's principle to balance air pressure, with the terminal airflow deviation controlled within ±5%. Within a certain percentage, an expansion tube 904, made of alloy material, is fixed to the right end of the separator tube 8 via a pipe. A noise reduction tube 9, also made of alloy material, is fixed to the right end of the expansion tube 904. The noise reduction tube 9 is used to position the perforated plate 905. The perforated plate 905, also made of alloy material, is located inside the noise reduction tube 9. Sound-absorbing cotton 906, made of sound-absorbing material, is located at the right end of the perforated plate 905. This achieves broadband noise reduction by first weakening low-frequency noise through a resistive structure and then absorbing mid-to-high frequencies using resistive materials.

[0059] Example 2, based on Example 1, is... Figures 4-6 , Figures 9-11As shown, a control cabinet 101 is fixed to the top of the ground 1. The control cabinet 101 is used to control the entire device. A power supply box 102 is fixed to the right end of the control cabinet 101. The power supply box 102 provides the necessary power for the entire device. A reversing motor 103 is fixed to the top of the ground 1, and a reversing head 104 is rotatably connected to the top of the reversing motor 103. The reversing head 104 is used to position the main lifting rod 105. An adjusting motor 111 is fixed to the front end of the reversing head 104. The adjusting motor 111 can drive the reversing head 104 to rotate. The adjusting motor 111 is rotatably connected to the main lifting rod 105 at its rear end. A moving rod motor 112 is fixed to the front end of the top of the main lifting rod 105. The moving rod motor 112 can drive the moving rod to rotate. The rod 106 rotates, and the moving rod motor 112 is rotatably connected to the moving rod 106. A secondary lifting rod motor 113 is fixed to the front left side of the moving rod 106. The secondary lifting rod motor 113 can drive the secondary lifting rod 107 to rotate. The secondary lifting rod motor 113 is rotatably connected to the secondary lifting rod 107. A connecting block motor 114 is fixed to the front bottom of the secondary lifting rod 107. The connecting block motor 114 can drive the connecting block 108 to rotate. The connecting block motor 114 is rotatably connected to the connecting block 108. Positioning rings 115 are fixed to the ends of the fixed ends of the secondary lifting rod 107, the moving rod 106, and the main lifting rod 105. The 15 is made of alloy material. The positioning ring 115 is used to position the suction pipe 201. The left end of the connecting block 108 is fixed with a positioning plate 109, which is also made of alloy material. The positioning plate 109 is used to position the suction camera 110. The top of the positioning plate 109 is fixed with the suction camera 110, which is used to monitor the position of the suction hood 2. The positioning plate 109 is fixedly connected to the suction hood 2. Several positioning rings 115 are slidably connected to the suction pipe 201. The bottom of the suction fan 202 is fixed with a suction valve 203. The top of the suction valve 203 is fixed with a water curtain pipe 205, which is made of alloy material. The water curtain pipe 205 is used to supply the required clean water to the water curtain tank 211. The bottom of the water curtain pipe 205 is fixed to the water curtain tank 211, which is made of alloy material and forms a water curtain. The bottom of the dust collector inlet pipe 204 is fixed to a water curtain outlet 206, which has a funnel-shaped structure and is made of alloy material. The bottom of the water curtain outlet 206 is fixedly connected to the dust collection bin 304 via a connecting pipe 207. The water curtain outlet 206 and the connecting pipe 207 work together to transport wastewater into the dust collection bin 304. A water curtain valve 208 is fixed to the rear end of the water curtain pipe 205, and a water curtain pump 209 is fixed to the rear end of the water curtain valve 208.The water curtain valve 208 and the water curtain pump 209 work together to transport clean water from the water supply pipe 210 to the water curtain pipe 205. The water supply pipe 210 is fixed to the rear end of the water curtain pump 209. A stirring motor 308 is fixed inside the dust collection bin 304. A stirring plate 309 is rotatably connected to the bottom of the stirring motor 308. The stirring motor 308 can drive the stirring plate 309 to rotate, thereby stirring the sewage inside the dust collection bin 304 and preventing sludge from settling and clogging the sewage valve 307. A sewage valve 307 is fixed to the front end of the dust collection bin 304 for easy sewage discharge. An anti-backflow bucket 305 is fixed to the top of the dust collection bin 304. The anti-backflow bucket 305 adopts an inverted funnel structure to prevent dust backflow. A wastewater level sensor 306 is fixed to the top of the anti-backflow bucket 305. The wastewater level sensor 306 is used to monitor the liquid level inside the dust collection bucket 304. A dust removal funnel 303 is fixed to the top of the dust collection bucket 304 via a pipe. The dust removal funnel 303 facilitates the downward flow of wastewater. The top of the dust removal funnel 303 is fixedly connected to the dust collector 3. An infrared spark detector 301 is fixed to the front end of the dust collector 3. The infrared spark detector 301 is used to monitor the spark situation inside the dust collector 3. A light scattering dust meter 302 is fixed to the left end of the infrared spark detector 301. Instrument 302 is used to monitor the dust concentration inside the dust collector 3. The dust collector 3 has several nozzles 511 inside, which facilitate water spraying. Each nozzle 511 is fixedly connected to an external water spray pipe 510. A dust suppression valve 506 is fixed to the rear end of the annular pipe 5, which controls the entry of clean water into the annular pipe 5. A dust suppression pipe 505 is fixed to the rear end of the dust suppression valve 506, and is fixedly connected to the water supply pipe 210. A water outlet valve 504 is fixed to the rear end of the bottom of the dust suppression pipe 505, and a dust suppression pump 503 is fixed to the rear end of the water outlet valve 504. The dust pump 503 and the water outlet valve 504 work together to... Clean water inside the water tank 501 is transported to the annular pipe 5 through the dust collection pipe 505. The dust collection pump 503 is fixedly connected to the water tank 501 at its rear end. A nitrogen pipe 509 is also fixedly connected to the rear end of the dust collector 3. A nitrogen valve 508 is fixedly connected to the bottom of the nitrogen pipe 509. A nitrogen pump 507 is fixedly connected to the rear end of the nitrogen valve 508. The nitrogen pump 507 and the nitrogen valve 508 work together to transport nitrogen from the nitrogen tank 502 to the dust collector 3 through the nitrogen pipe 509, thereby preventing the titanium powder inside the dust collector 3 from exploding and ensuring the safety of the entire device. The nitrogen pump 507 is fixedly connected to the nitrogen tank 502 at its rear end.

[0060] Before using this device, the operator installs the entire device according to requirements. At this time, the control cabinet 101 controls the reversing motor 103 to rotate the reversing head 104, controls the adjusting motor 111 to rotate the main lifting rod 105, controls the extension and retraction of the main lifting rod 105 to move the moving rod 106, controls the moving rod motor 112 to rotate the moving rod 106, controls the extension and retraction of the moving rod 106 to move the auxiliary lifting rod 107, controls the auxiliary lifting rod motor 113 to rotate the auxiliary lifting rod 107, and controls the connecting block motor 114 to rotate the connecting block 108. Simultaneously, this is coordinated with the strip exhaust fan at the edge of the fitter's workbench. The system forms a three-dimensional dust collection network, dynamically covering the polishing points, allowing the dust collection hood 2 to reach any position on the polishing table, thus ensuring the accuracy of dust collection. Furthermore, the control cabinet 101 controls the dust pump 503 and the water outlet valve 504 to pump clean water from the water tank 501 to the dust collection pipe 505. Then, the control cabinet 101 controls the water curtain valve 208 and the water curtain pump 209 to work together to transport clean water through the water supply pipe 210 to the water curtain pipe 205, thereby forming a water curtain through the water curtain trough 211. At this time, the water inside the dust collector inlet pipe 204 is transported to the dust collection bin 304 through the water curtain outlet 206 and the connecting pipe 207. At this point, the control cabinet 101 controls the dust collection... The fan 202 and the dust suction valve 203 work together to transport dust from the dust suction hood 2 to the dust collector 3 through the dust suction pipe 201. At this time, the dust enters the dust collection bin 304 along with the water curtain, simultaneously wetting the titanium powder in the dust to prevent static electricity. Simultaneously, the action of the dust suction fan 202 and the dust collector inlet pipe 204 causes centrifugal force to be generated between the dust and the airflow inside the dust collector 3. Furthermore, the control cabinet 101 controls the dust suppression valve 506 to open, allowing clean water to be delivered to the annular pipe 5, and then through the water spray pipe 510 to the nozzle 511, where it is sprayed out, thus increasing the weight of the dust and causing it to pass through the dust collection funnel 30. 3. The dust falls into the dust collection bin 304, while simultaneously allowing clean gas to reach the outlet pipe 403. Furthermore, the control cabinet 101 monitors the dust concentration inside the dust collector 3 through the light scattering dust meter 302. The control cabinet 101 further controls the nitrogen pump 507 and the nitrogen valve 508 to supply nitrogen into the dust collector 3, thereby maintaining the dust concentration inside the dust collector 3 within a certain range. Furthermore, the infrared spark detector 301 monitors for sparks inside the dust collector 3, thereby controlling the water spray frequency of the nozzle 511 to prevent explosion. When the dust collection bin 304 is full of sewage, the control cabinet 101 alarms, and at the same time, the operator controls the sewage valve 307 to open and discharge the sewage.

[0061] Example 3, based on Example 1, is... Figure 12 , Figures 14-15The dust collector 3 is provided with an exhaust valve 401 at the top, which is fixedly connected to the conveying pipe 4. The exhaust valve 401 and the centrifugal fan 402 work together to transport the gas inside the exhaust pipe 403 to the PTFE membrane filter cartridge 6. A dust collection box 601 is fixed at the bottom of the PTFE membrane filter cartridge 6. The dust collection box 601 is made of alloy material and facilitates dust collection. A door 602 is slidably connected to the front end of the dust collection box 601, which facilitates cleaning the dust inside the dust collection box 601. Two filter cartridge motors 603 are fixed at the left end of the PTFE membrane filter cartridge 6. The filter cartridge motors 603 can drive the filter cartridge door 604 to rotate. The right end of each filter cartridge motor 603 rotates. A filter cartridge door 604 is movably connected to the PTFE membrane filter cartridge 6. The filter cartridge door 604 is made of alloy material and ensures the sealing of the bottom of the PTFE membrane filter cartridge 6. A filter membrane positioning plate 606, also made of alloy material, is fastened to the left end of the PTFE membrane filter cartridge 6 via a filter cartridge connecting rod 605. The filter membrane positioning plate 606 is used to position the filter membrane 607 and is fixedly connected to the filter membrane 607 at its right end. A cleaning plate 608, made of alloy material, is provided inside the filter membrane 607. The cleaning plate 608 is used to position the cleaning head 609 and is fixedly connected to the cleaning head 609. A cleaning camera 610 is fixed to the left end of the cleaning plate 608. The cleaning camera 610 is used to monitor the position of the cleaning head 609. A cleaning rod 612 is fixed to the right end of the cleaning plate 608. The cleaning rod 612 is telescopic, thereby driving the cleaning plate 608 to move. A cleaning motor 613 is rotatably connected to the right end of the cleaning rod 612. The cleaning motor 613 can drive the cleaning rod 612 to rotate. The cleaning motor 613 is fixedly connected to the pipe at the left end of the HEPA terminal filter box 7. A filter membrane connecting flange 614 is fixed to the right end of the filter membrane 607. The filter membrane connecting flange 614 is used to connect the filter membrane 607 and the conveying flange 705. The cleaning motor 613 is fastened to the conveying flange 705 by bolts. 05. The conveying flange 705 ensures that the gas inside the PTFE membrane filter cartridge 6 can only be conveyed to the HEPA terminal filter box 7 from inside the filter membrane 607. The conveying flange 705 is fixedly connected to the pipe at the left end of the HEPA terminal filter box 7. The right end of the conveying flange 705 is tightly fitted with a sealing flange 706. The left end of the sealing flange 706 is fastened to a filter cartridge connecting flange 615, which is fixedly connected to the PTFE membrane filter cartridge 6. The conveying flange 705 is fastened to the sealing flange 706 with bolts. A replacement plate 701 is slidably connected to the front end of the HEPA terminal filter box 7. The replacement plate 701 facilitates the removal of the HEPA filter plate 707.Gas flow meters 704 are installed in the pipes at both ends of the HEPA terminal filter box 7. The gas flow meter 704 at the left end monitors the flow rate of the gas discharged from the PTFE membrane filter cartridge 6, and the gas flow meter 704 at the right end monitors the flow rate of the gas discharged from the HEPA terminal filter box 7. Air pumps 702 are fixed at both ends of the HEPA terminal filter box 7. Each air pump 702 has a gas filtration mechanism fixed to its front end via a pipeline, thereby ensuring the cleanliness of the air delivered to both ends of the separator pipe 8. Each air pump 702 has an air valve 703 fixed to its rear end. The air pump 702 and the air valve 703 at the left end cooperate to facilitate the cleaning head 609 cleaning the filter membrane 607. The air pump 702 and the air valve 703 at the right end cooperate to deliver outside air into the variable diameter duct 813, thereby facilitating the adjustment of carbon dioxide concentration. Each air valve 703 is fixedly connected to the pipes at both ends of the HEPA terminal filter box 7.

[0062] Furthermore, the control cabinet 101 controls the centrifugal fan 402 and the outlet valve 401 to deliver clean gas from the outlet pipe 403 to the PTFE membrane filter cartridge 6 via the delivery pipe 4. At this point, the filter membrane 607 further purifies the gas. Simultaneously, the purified gas is delivered to the HEPA terminal filter box 7 and further purified by the HEPA filter plate 707, thus outputting clean gas. If the gas flow meter 704 on the left detects a low gas flow rate, the control cabinet 101 determines that the filter membrane 607 is clogged. In this case, the control cabinet 101 controls the cleaning motor 613 and the cleaning rod 612 to move the cleaning head 609 to any position inside the filter membrane 607. Furthermore, the control cabinet 101 controls the left-side air valve 7... 03 and the air pump 702 on the left end operate to deliver clean external air into the filter membrane 607. At this time, the control cabinet 101 controls the cleaning high-pressure pump 611 to blow out the dust from the filter membrane 607, which is then blown into the PTFE membrane filter cartridge 6. After cleaning is completed, the control cabinet 101 controls the cleaning head 609 to reset. At this time, the control cabinet 101 controls the filter cartridge motor 603 to open the filter cartridge door 604, allowing the dust to fall into the dust collection box 601. The operator can remove the dust by opening the box door 602. If the gas flow rate of the gas flow meter 704 on the left end is large and the gas flow rate of the gas flow meter 704 on the right end is small, the control cabinet 101 will alarm. At this time, the operator will open the replacement plate 701 and replace the HEPA filter plate 707.

[0063] Example 4, based on Example 1, by Figures 16-17 , Figure 20The HEPA terminal filter box 7 is provided with a pipe fixedly connected to the right end of the variable diameter duct 813, which is fixedly connected to the partition pipe 8. A return valve 812 is fixedly attached to the right front end of the partition pipe 8 via a pipeline. The return valve 812 can transport water from the temperature regulating pipe 801 to the radiator 811. The radiator 811 is fixedly attached to the front end of the return valve 812 and is used for heat dissipation. A temperature regulating water tank 807 is fixedly attached to the left end of the radiator 811 via a one-way valve. The temperature regulating water tank 807 is used to hold clean water. A water level gauge 808 is fixed to the top of the temperature-regulating water tank 807. The water level gauge 808 is used to monitor the level of clean water inside the temperature-regulating water tank 807. A temperature regulating pump 809 is fixed to the left end of the temperature-regulating water tank 807. A temperature regulating valve 810 is fixed to the left end of the temperature regulating pump 809. The temperature regulating pump 809 and the temperature regulating valve 810 work together to transport clean water from the temperature-regulating water tank 807 to the temperature regulating box 802. The temperature regulating box 802 is fixed to the left end of the temperature regulating valve 810. The temperature regulating box 802 is used to heat clean water. A temperature regulating box temperature valve is fixed to the top of the temperature regulating box 802. The thermometer 803 is used to monitor the water temperature inside the temperature control chamber 802. A heating plate 804 is fixed inside the temperature control chamber 802 for heating the water inside. A water pump 805 is fixed to the rear end of the temperature control chamber 802. The water pump 805 and the water valve 806 work together to deliver the heated water to the temperature control pipe 801. The water valve 806 is fixed to the rear end of the water pump 805 and is fixedly connected to the left end of the temperature control pipe 801 via a pipeline. A gas thermometer 902 is fixed on the right end of the duct 8. The gas thermometer 902 is used to monitor the gas temperature inside the variable diameter duct 813. A carbon dioxide concentration meter 903 is provided on the right end of the gas thermometer 902. The carbon dioxide concentration meter 903 is used to monitor the carbon dioxide concentration. The noise reduction tube 9 is fastened to the perforated plate 905 by bolts. The sound-absorbing cotton 906 is fastened to the outlet 901 and the right end of the noise reduction tube 9 by bolts. The expansion tube 904, the perforated plate 905 and the sound-absorbing cotton 906 work together to reduce noise.

[0064] When the gas is further delivered to the variable diameter duct 813 through the pipeline, the air pressure is balanced using Bernoulli's principle. The temperature of the gas output from the variable diameter duct 813 is further monitored by the gas thermometer 902. At this time, the operator controls the temperature regulating pump 809 and the temperature regulating valve 810 to deliver clean water from the temperature regulating water tank 807 to the temperature regulating chamber 802. After being heated by the heating plate 804, the control cabinet 101 controls the water pump 805 and the water valve 806 to deliver clean water at the required temperature to the temperature regulating pipe 801, thereby changing the water temperature inside the variable diameter duct 813. The water is then further delivered through the return valve 812. The air flows into the radiator 811 to cool it down, and then back into the temperature-regulating water tank 807. The carbon dioxide concentration meter 903 monitors the carbon dioxide content of the gas output from the variable diameter duct 813. If the carbon dioxide content is high, the control cabinet 101 controls the air pump 702 and the air valve 703 on the right end to allow fresh air to enter the variable diameter duct 813, thereby balancing the carbon dioxide concentration. The gas is then delivered to the expansion pipe 904, and then to the noise reduction pipe 9. Due to the functions of the expansion pipe 904, the perforated plate 905, and the sound-absorbing cotton 906, noise reduction is achieved, thereby preventing noise pollution and outputting clean gas.

[0065] This embodiment of a dust removal and return air method for an aircraft parts processing table, based on the dust removal and return air device for an aircraft parts processing table as described above, includes the following steps:

[0066] Step 1: When using this device, the staff installs the entire device according to the requirements. At this time, the control cabinet 101 controls the reversing motor 103, the adjusting motor 111, the main lifting rod 105, the moving rod motor 112, the moving rod 106, the auxiliary lifting rod 107, and the connecting block motor 114 to work with the strip-shaped exhaust groove on the edge of the fitter's workbench to form a three-dimensional collection network that dynamically covers the grinding points, so that the dust collection hood 2 can reach any position on the grinding table, thereby ensuring the accuracy of dust collection.

[0067] Step Two: Further, control cabinet 101 controls dust pump 503 and water outlet valve 504 to pump clean water from water tank 501 to dust collection pipe 505. Then, control cabinet 101 controls water curtain valve 208 and water curtain pump 209 to work together to transport clean water through water supply pipe 210 to water curtain pipe 205, forming a water curtain through water curtain trough 211. At this time, water inside dust collector inlet pipe 204 is transported to dust collection bin 304 through water curtain outlet 206 and connecting pipe 207. Then, control cabinet 101 controls suction fan 202 and suction valve 203 to work together to remove dust from suction hood 2. Dust is conveyed to the dust collector 3 through the dust pipe 201. At this time, the dust enters the dust collection bin 304 along with the water curtain. At the same time, due to the action of the dust suction fan 202 and the dust collector inlet pipe 204, the dust and airflow generate centrifugal force inside the dust collector 3. The control cabinet 101 further controls the dust removal valve 506 to open, so that clean water is conveyed to the ring pipe 5, and then conveyed to the nozzle 511 through the water spray pipe 510. The water is then sprayed out through the nozzle 511, which increases the weight of the dust. As a result, the dust falls into the dust collection bin 304 through the dust removal funnel 303, and at the same time, the clean gas reaches the air outlet pipe 403.

[0068] Step 3: Further control cabinet 101 monitors the dust concentration inside dust collector 3 through light scattering dust meter 302. Further control cabinet 101 controls nitrogen pump 507 and nitrogen valve 508 to deliver nitrogen into dust collector 3, thereby keeping the dust concentration inside dust collector 3 within a certain range. Further, infrared spark detector 301 detects sparks inside dust collector 3, thereby controlling the water spray frequency of nozzle 511 to achieve the purpose of explosion prevention.

[0069] Step 4: Further control cabinet 101 controls centrifugal fan 402 and air outlet valve 401 so that clean gas inside air outlet pipe 403 is delivered to PTFE membrane filter cartridge 6 through delivery pipe 4. At this time, due to the function of filter membrane 607, the gas can be further purified. At the same time, the purified gas is delivered to HEPA terminal filter box 7, and then purified again through HEPA filter plate 707, thereby outputting clean gas.

[0070] Step 5: If the gas flow rate detected by the left gas flow meter 704 is low, the control cabinet 101 will control the cleaning motor 613, cleaning rod 612 and cleaning high-pressure pump 611 to blow out the dust from the filter membrane 607. At the same time, the filter cartridge motor 603 will control the filter cartridge door 604 to open and transport the dust into the dust collection box 601. If the gas flow rate of the left gas flow meter 704 is high and the gas flow rate of the right gas flow meter 704 is low, the control cabinet 101 will alarm and the staff will replace the HEPA filter plate 707.

[0071] Step Six: Further gas is transported through pipelines to the inside of the variable diameter duct 813. The air pressure is balanced using Bernoulli's principle. The temperature of the gas output from the variable diameter duct 813 is monitored by the gas thermometer 902. At this time, the staff controls the supply of clean water from the temperature-regulating water tank 807 to the temperature-regulating box 802 as needed. The water is then heated by the heating plate 804 and supplied to the temperature-regulating pipe 801, thereby changing the water temperature inside the variable diameter duct 813. At the same time, the carbon dioxide concentration is monitored by the carbon dioxide concentration meter 903. If the carbon dioxide concentration is high, the control cabinet 101 controls the air pump 702 and the air valve 703 on the right end to allow fresh air to enter the inside of the variable diameter duct 813, thereby balancing the carbon dioxide concentration.

[0072] Step 7: Further gas is delivered to the expansion tube 904, and then to the noise reduction tube 9. Due to the function of the expansion tube 904, the perforated plate 905 and the sound-absorbing cotton 906, noise reduction can be achieved, thereby preventing noise pollution and outputting clean gas. Furthermore, when the dust collection bin 304 is full of sewage, the control cabinet 101 alarms, and at the same time, the staff controls the sewage valve 307 to open and discharge the sewage.

[0073] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dust removal and return air device for an aircraft parts processing table, characterized in that: The system includes a reversing motor mounted on the bottom surface. A main lifting rod is located on top of the reversing motor, with a moving rod hinged to the top of the main lifting rod. A secondary lifting rod is hinged to the left end of the moving rod, and a connecting block is hinged to the bottom of the secondary lifting rod. A dust collection hood is located at the left end of the connecting block. A dust collection fan is fixed to the top of the dust collection hood via a dust collection pipe. A dust collector inlet pipe is fixed to the outlet of the dust collection fan. A dust collector is fixed to the right end of the dust collector inlet pipe. A dust collection bin is located at the bottom of the dust collector. A ring-shaped pipe is fixed to the top of the dust collector via several water spray pipes. A water tank is located at the rear of the dust collection bin, and a nitrogen tank is located to the right of the water tank. An exhaust pipe is located inside the dust collector, and a conveyor belt is located at the top of the exhaust pipe. A centrifugal fan is fixed to the pipeline. A PTFE membrane filter cartridge is fixed to the right end of the centrifugal fan. The PTFE membrane filter cartridge contains a filter membrane. A cleaning head is located inside the filter membrane. A high-pressure cleaning pump is fixed to the rear end of the cleaning head. A HEPA terminal filter box is located to the right end of the PTFE membrane filter cartridge. A HEPA filter plate is located inside the HEPA terminal filter box. A partition pipe is located to the right end of the HEPA terminal filter box. A temperature regulating pipe is located inside the partition pipe. A variable diameter air duct is located inside the temperature regulating pipe. An expansion pipe is fixed to the right end of the partition pipe through a pipeline. A noise reduction pipe is fixed to the right end of the expansion pipe. A perforated plate is located inside the noise reduction pipe. Sound-absorbing cotton is located to the right end of the perforated plate. It also includes a control cabinet, with a power supply box fixed to the right end of the control cabinet. A reversing head is rotatably connected to the top of the reversing motor. An adjusting motor is fixed to the front end of the reversing head. The adjusting motor is rotatably connected to the main lifting rod at its rear end. A moving rod motor is fixed to the front end of the top of the main lifting rod. The moving rod motor is rotatably connected to the moving rod. An auxiliary lifting rod motor is fixed to the front side of the left end of the moving rod. The auxiliary lifting rod motor is rotatably connected to the auxiliary lifting rod. A connecting block motor is fixed to the front end of the bottom of the auxiliary lifting rod. The connecting block motor is rotatably connected to the connecting block. Positioning rings are fixed to the ends of the fixed ends of the auxiliary lifting rod, the moving rod, and the main lifting rod. A positioning plate is fixed to the left end of the connecting block. A dust collection camera is fixed to the top of the positioning plate. The positioning plate is fixedly connected to the dust collection hood. Several positioning rings are slidably connected to the suction pipe. A suction valve is fixed at the bottom of the suction fan. A water curtain pipe is fixed at the top of the suction valve. A water curtain trough is fixed at the bottom of the water curtain pipe. A water curtain outlet is fixed at the bottom of the dust collector inlet pipe. The bottom of the water curtain outlet is fixedly connected to the dust collection bin via a connecting pipe. A water curtain valve is fixed at the rear end of the water curtain pipe. A water curtain pump is fixed at the rear end of the water curtain valve. A water supply pipe is fixed at the rear end of the water curtain pump. A stirring motor is fixed inside the dust collection bin. A stirring plate is rotatably connected to the bottom of the stirring motor. A sewage valve is fixed at the front end of the dust collection bin. An anti-backflow hopper is fixed at the top. A sewage level sensor is fixed at the top of the anti-backflow hopper. A dust collection funnel is fixed to the top of the dust collection bin via a pipe. The top of the dust collection funnel is fixedly connected to the dust collector. An infrared spark detector is fixed at the front end of the dust collector. A light scattering dust meter is fixed to the left end of the infrared spark detector.

2. The dust removal and return air device for an aircraft parts processing table according to claim 1, characterized in that: The dust collector has several nozzles inside, each of which is fixedly connected to an external water spray pipe. A dust suppression valve is fixed to the rear end of the annular pipe, and a dust suppression pipe is fixed to the rear end of the dust suppression valve. The dust suppression pipe is fixedly connected to a water supply pipe. A water outlet valve is fixed to the rear end of the bottom of the dust suppression pipe, and a dust suppression pump is fixed to the rear end of the water outlet valve. The dust suppression pump is fixedly connected to a water tank at its rear end. A nitrogen pipe is also fixed to the rear end of the dust collector, and a nitrogen valve is fixed to the bottom of the nitrogen pipe. A nitrogen pump is fixed to the rear end of the nitrogen valve, and the nitrogen pump is fixedly connected to a nitrogen tank at its rear end.

3. The dust removal and return air device for an aircraft parts processing table according to claim 2, characterized in that: The dust collector is equipped with an exhaust valve at the top, which is fixedly connected to the conveying pipeline. A dust collection box is fixed at the bottom of the PTFE membrane filter cartridge, and a door is slidably connected to the front end of the dust collection box. Two filter cartridge motors are fixed to the left end of the PTFE membrane filter cartridge, and a filter cartridge door is rotatably connected to the right end of each filter cartridge motor. A filter membrane positioning plate is fastened to the left end of the PTFE membrane filter cartridge through a filter cartridge connecting rod. The filter membrane positioning plate is fixedly connected to the filter membrane at its right end. A cleaning plate is provided inside the filter membrane. The cleaning plate is fixedly connected to the cleaning head. A cleaning camera is fixed to the left end of the cleaning plate, and a cleaning rod is fixed to the right end of the cleaning plate. A cleaning motor is rotatably connected to the right end of the cleaning rod. The cleaning motor is fixedly connected to the pipeline at the left end of the HEPA terminal filter box.

4. The dust removal and return air device for an aircraft parts processing table according to claim 3, characterized in that: A filter membrane connecting flange is fixed to the right end of the filter membrane. The cleaning motor is fastened to a conveying flange by bolts. The conveying flange is fixedly connected to the pipe at the left end of the HEPA terminal filter box. A sealing flange is tightly fitted to the right end of the conveying flange. A filter cartridge connecting flange is fastened to the left end of the sealing flange. The filter cartridge connecting flange is fixedly connected to the PTFE membrane filter cartridge. The conveying flange is fastened to the sealing flange by bolts. A replacement plate is slidably connected to the front end of the HEPA terminal filter box. Gas flow meters are installed in the pipes at both ends of the HEPA terminal filter box. Air pumps are fixed at both ends of the HEPA terminal filter box. An air valve is fixed to the rear end of each air pump. Each air valve is fixedly connected to the pipes at both ends of the HEPA terminal filter box.

5. The dust removal and return air device for an aircraft parts processing table according to claim 4, characterized in that: The right end of the HEPA terminal filter box is fixedly connected to the variable diameter duct, which is fixedly connected to the partition pipe. A return valve is fixed to the right front end of the partition pipe via a pipeline. A radiator is fixed to the front end of the return valve. A temperature-regulating water tank is fixed to the left end of the radiator via a one-way valve. A water level gauge is fixed to the top of the temperature-regulating water tank. A temperature-regulating pump is fixed to the left end of the temperature-regulating water tank. A temperature-regulating valve is fixed to the left end of the temperature-regulating pump. A temperature-regulating box is fixed to the left end of the temperature-regulating valve. A temperature-regulating box thermometer is fixed to the top of the temperature-regulating box. A heating plate is fixed inside the temperature-regulating box. A water pump is fixed to the rear end of the temperature-regulating box. A water valve is fixed to the rear end of the water pump. The water valve is fixedly connected to the left end of the temperature-regulating pipe via a pipeline.

6. The dust removal and return air device for an aircraft parts processing table according to claim 5, characterized in that: A gas thermometer is fixed on the right end of the separator pipe, and a carbon dioxide concentration meter is installed on the right end of the gas thermometer. The noise reduction pipe is fastened to the perforated plate by bolts, and the sound-absorbing cotton is fastened to the outlet and the right end of the noise reduction pipe by bolts.

7. A method for dust removal and return air circulation on an aircraft parts processing table, based on the dust removal and return air circulation device for an aircraft parts processing table as described in any one of claims 1-6, characterized in that, include: Step 1: When using this device, the staff installs the entire device according to the requirements. At this time, the control cabinet controls the reversing motor, adjusting motor, main lifting rod, moving rod motor, moving rod, auxiliary lifting rod and connecting block motor to work with the strip exhaust groove on the edge of the fitter's workbench to form a three-dimensional capture network, dynamically covering the grinding points, so that the dust hood can reach any position on the grinding table, thus ensuring the accuracy of dust collection. Step Two: The control cabinet further controls the dust pump and water outlet valve to pump clean water from the water tank to the dust collection pipe. Then, the control cabinet controls the water curtain valve and water curtain pump to work together to transport clean water through the water supply pipe to the water curtain pipe, and then form a water curtain through the water curtain trough. At this time, the water inside the dust collector inlet pipe is transported to the dust collection bin through the water curtain outlet and connecting pipe. At this time, the control cabinet controls the dust suction fan and dust suction valve to work together to transport the dust on the dust suction hood to the dust collector through the dust suction pipe. At this time, the dust enters the dust collection bin with the water curtain. At the same time, due to the action of the dust suction fan and the dust collector inlet pipe, the dust and airflow generate centrifugal force inside the dust collector. The control cabinet further controls the dust collection valve to open, so that clean water is transported to the ring pipe, and then transported to the nozzle through the water spray pipe. It is then sprayed out through the nozzle, which increases the weight of the dust, so that the dust falls into the dust collection bin through the dust collection funnel. At the same time, the clean gas reaches the exhaust pipe. Step 3: The control cabinet monitors the dust concentration inside the dust collector using a light scattering dust meter. The control cabinet then controls the nitrogen pump and nitrogen valve to supply nitrogen into the dust collector, thereby maintaining the dust concentration inside the dust collector within a certain range. Furthermore, an infrared spark detector is used to detect sparks inside the dust collector, thereby controlling the water spray frequency of the nozzles to achieve the purpose of explosion prevention. Step 4: The control cabinet further controls the centrifugal fan and the exhaust valve so that the clean gas inside the exhaust pipe is transported through the delivery pipeline to the PTFE membrane filter cartridge. At this time, the gas is further purified by the filter membrane. At the same time, the purified gas is transported to the HEPA terminal filter box, and then purified again by the HEPA filter plate, thereby outputting clean gas. Step 5: If the gas flow rate monitored by the left gas flow meter is low, the control cabinet will control the cleaning motor, cleaning rod and cleaning high-pressure pump to blow out the dust from the filter membrane. At the same time, the filter cartridge motor will control the filter cartridge door to open and transport the dust into the dust collection box. If the gas flow rate of the left gas flow meter is high and the gas flow rate of the right gas flow meter is low, the control cabinet will alarm and the staff will replace the HEPA filter plate. Step Six: Further gas is transported through pipelines to the inside of the variable diameter duct. The air pressure is balanced using Bernoulli's principle. The temperature of the gas output from the variable diameter duct is monitored by a gas thermometer. At this time, the staff controls the supply of clean water from the temperature-regulating water tank to the temperature-regulating box according to the needs. The water is then heated by a heating plate and sent to the temperature-regulating pipe, thereby changing the water temperature inside the variable diameter duct. At the same time, the carbon dioxide concentration meter monitors the carbon dioxide content of the gas output from the variable diameter duct. If the carbon dioxide content is high, the control cabinet controls the air pump and air valve on the right end to allow fresh air to enter the inside of the variable diameter duct, thereby balancing the carbon dioxide concentration. Step 7: Further gas is delivered to the expansion tube, and then to the noise reduction tube. Due to the action of the expansion tube, perforated plate and sound-absorbing cotton, noise reduction is achieved, thereby preventing noise pollution and outputting clean gas. When the dust collection bin is full of sewage, the control cabinet alarms, and at the same time, the staff controls the sewage valve to open and discharge the sewage.

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