Metal workpiece drying system

Abstract

The invention relates to the technical field of metal workpiece drying, in particular to a metal workpiece drying system which comprises a heating frame, an exhaust connector is mounted at the top of the heating frame, sealing doors are rotatably mounted on the upper portion and the lower portion of the side wall of one end of the heating frame correspondingly, and a ventilation frame, a sealing plate and a fixing frame are fixedly connected to the interior of the heating frame from top to bottom in sequence; a pretreatment cavity is formed above the ventilation frame, a drying cavity is formed below the sealing plate, and a carbon dioxide supply mechanism is placed on one side of the heating frame and connected with the drying cavity and the pretreatment cavity. Through mutual cooperation of three treatment modes of staged cooperative treatment, dynamic disturbance strengthening and closed-loop resource circulation, the drying mode of the metal workpiece in the prior art is changed, so that the metal workpiece is subjected to staged drying treatment, efficiency and depth are both considered, the microcosmic cleaning bottleneck is broken through through the multi-field coupling effect, and the cleaning efficiency is improved. The closed-loop system realizes dual optimization of environment and economic benefits.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing part drying, and in particular to a metal processing part drying system. Background Art

[0002] In the production process of metal parts, it is generally necessary to dry the metal parts. For example, in the processing stage, metal parts often adhere to moisture due to contact with cutting fluid and coolant, and a large amount of moisture will remain after the cleaning process. Drying of metal parts is one of the important steps that affect their quality. If the residual moisture is not removed by drying, it is easy to cause corrosion and reduce the strength and wear resistance of the parts. The degree of drying of metal parts directly reflects the length of their shelf life. If the drying is insufficient, the moisture will continue to erode the metal, which will accelerate the damage of the parts and greatly shorten their service life.

[0003] For example, a patent application document with Chinese invention publication number CN119123788A discloses a metal processing parts drying system. The device is equipped with an electric slider, a connecting block, a fan, an air outlet hood and a magnetic block to achieve the technical effect of avoiding the stacking of steel pipes while controlling the air volume according to the number of parts, fully drying the surface of the steel pipe from multiple angles and in all directions, and reducing the oxidation inside the steel pipe. However, the device still has the following problems during use, that is, when the metal processing parts are placed on the conveyor belt device, it is difficult to fully dry the lower surface of the metal processing parts, resulting in insufficient drying, and the hot air in the drying process cannot be recycled, resulting in poor economic benefits. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings in the prior art and to propose a metal workpiece drying system.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A metal processing parts drying system, comprising a heating frame, an exhaust interface is installed on the top of the heating frame, a sealing door is rotatably installed at the upper and lower sides of the side wall of one end of the heating frame, a breathable frame, a sealing plate and a fixed frame are fixedly connected in sequence from top to bottom inside the heating frame, a pretreatment chamber is set above the breathable frame, a drying chamber is set below the sealing plate, a carbon dioxide supply mechanism is placed on one side of the heating frame, and the carbon dioxide supply mechanism is connected to the drying chamber and the pretreatment chamber; A carbon dioxide pressurizing mechanism is installed on the side wall of the other end of the heating frame, and the carbon dioxide pressurizing mechanism is connected to the drying chamber and the pretreatment chamber; A stirring mechanism is arranged inside the fixing frame, and a spraying assembly is arranged between the air permeable frame and the sealing plate.

[0006] Preferably, the carbon dioxide supply mechanism includes a gas tank, in which carbon dioxide is stored, and the output end of the gas tank is respectively connected to a first air inlet pipe and a second air inlet pipe, the end of the first air inlet pipe away from the gas tank is connected to the interior of the drying chamber, and the end of the second air inlet pipe away from the gas tank is connected to the interior of the pretreatment chamber.

[0007] Preferably, the input end of the gas storage tank is connected to a return air pipe, one end of the return air pipe away from the gas storage tank is connected to an exhaust fan fixedly mounted on the heating frame, and the input end of the exhaust fan is connected to the interior of the pretreatment chamber.

[0008] Preferably, the carbon dioxide pressurizing mechanism includes a compound pump fixedly mounted on the heating frame, the input end of the compound pump is connected to an exhaust pipe, the end of the exhaust pipe away from the compound pump is connected to the interior of the pretreatment chamber, and the output end of the compound pump is connected to a pressurizing pipe, the end of the pressurizing pipe away from the compound pump is connected to the interior of the drying chamber.

[0009] Preferably, a dryer is detachably mounted on the exhaust pipe for drying the carbon dioxide gas flowing through the exhaust pipe.

[0010] Preferably, the stirring mechanism includes a driving motor fixedly mounted on the bottom wall of the heating frame, the output end of the driving motor rotates through the bottom wall of the heating frame and is keyed to be connected to a connecting rod, a section of the connecting rod located inside the fixed frame is fixedly mounted with a driving gear, a plurality of driven gears are meshedly connected to the driving gear, a circle of tooth grooves is provided on the inner side wall of the fixed frame, the driven gears are meshedly connected to the tooth grooves, and a placement component is provided on the upper end of the driven gear.

[0011] Preferably, the placement component includes a placement cavity opened on the upper end surface of the driven gear, and a plurality of micro-columns imitating lotus leaf micro-nano structures are evenly distributed on the bottom wall of the placement cavity. The micro-columns are made of carbon dioxide-repellent material, and a plurality of through holes are evenly opened on the bottom wall of the placement cavity.

[0012] Preferably, the top end of the connecting rod is located below the sealing plate and is fixedly provided with a stirring blade.

[0013] Preferably, a plurality of ultrasonic devices are fixedly mounted on the lower end of the sealing plate, the number of the ultrasonic devices corresponds to the number of the driven gears, and a waveguide cover is fixedly mounted on the working end of the ultrasonic device, and the pulse frequency of the ultrasonic device matches the rotation speed of the driven gear.

[0014] Preferably, the injection assembly comprises an injection frame arranged between the air permeable frame and the sealing plate, the lower end of the injection frame passes through the sealing plate and communicates with the interior of the drying chamber, and an electric control valve is detachably mounted on the lower end of the injection frame.

[0015] Compared with the prior art, the advantages of the present invention are: 1. This application realizes gradient processing through chamber design, combining low-pressure drying and supercritical carbon dioxide technology to form a multi-level cleaning system. In the pretreatment stage, the low-pressure environment is used to lower the boiling point of water, and free surface moisture is efficiently removed at a lower temperature; in the drying stage, the carbon dioxide enters the supercritical state by increasing the pressure and temperature, and uses its strong permeability to penetrate into the microscopic pores of the metal to dissolve residual moisture and organic impurities. The dual-chamber pressure difference design not only drives the carbon dioxide circulation, but also enhances the secondary cleaning effect of the pre-treated parts through the impact force generated by phase change expansion. This staged synergistic mechanism significantly reduces energy consumption and shortens the overall processing time, while taking into account surface and deep cleaning needs.

[0016] 2. This application achieves multi-dimensional cleaning enhancement through the design of compound motion and energy field coupling. Metal workpieces use centrifugal force to discharge pore liquid under the compound motion of rotation and revolution, while expanding the range of action of supercritical carbon dioxide. The ultrasonic pulse is dynamically matched with the rotation speed to accurately trigger the cavitation effect, and combined with the focusing effect of the waveguide cover, the energy is concentrated on the contaminated interface. The micro-nano structure that repel carbon dioxide reduces contact adsorption, cooperates with the bottom through-holes and turbulent stirring to break the medium laminar flow and accelerate the dissolution and diffusion process. This dynamic disturbance system significantly improves the removal efficiency of residues in complex structures and ensures uniform treatment of all parts of metal workpieces.

[0017] 3. This application constructs a closed-loop carbon dioxide circulation system throughout the entire process to maximize the use of medium characteristics and energy. Autonomous migration driven by pressure gradient reduces pumping energy consumption, and the expansion work released by phase change is reused for impact cleaning. Dielectric-repellent materials and drying systems reduce carbon dioxide loss, and pulsed ultrasound and waveguide structures optimize energy utilization. Waste heat recovery and efficient regeneration of the medium significantly improve the overall energy efficiency of the system, greatly reducing resource consumption and emissions compared to traditional open processes. This closed-loop design not only realizes the reuse of carbon dioxide, but also reduces operating costs through the dual circulation of energy and matter, which is in line with the concept of green manufacturing.

[0018] In summary, the present application changes the drying method of metal processed parts in the prior art by coordinating three processing methods: phased collaborative processing, dynamic disturbance intensification, and closed-loop resource circulation. The metal processed parts are dried in stages to balance efficiency and depth. The multi-field coupling effect breaks through the micro-cleaning bottleneck, and the closed-loop system achieves dual optimization of environmental and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic diagram of the overall structure of a metal processing parts drying system.

[0020] Figure 2This is a schematic diagram of the heating frame and support structure of a metal workpiece drying system proposed by the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of an air storage tank and an air pump of a metal workpiece drying system proposed by the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of a composite pump and dryer of a metal workpiece drying system proposed by the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of a driving gear and a driven gear of a metal workpiece drying system proposed by the present invention.

[0024] Figure 6 This is a schematic diagram of the connecting rod and stirring blade structure of a metal workpiece drying system proposed by the present invention.

[0025] Figure 7 This is a schematic diagram of the half-section structure of a heating frame of a metal workpiece drying system proposed by the present invention.

[0026] In the figure: 1 heating frame, 2 sealing door, 3 bracket, 4 gas storage tank, 5 first air inlet pipe, 6 second air inlet pipe, 7 return air pipe, 8 exhaust fan, 9 compound pump, 10 dryer, 11 exhaust pipe, 12 pressurizing pipe, 13 driving motor, 14 connecting rod, 15 stirring blade, 16 fixing frame, 17 driven gear, 18 driving gear, 19 placement chamber, 20 micro column, 21 through hole, 22 sealing plate, 23 waveguide cover, 24 ultrasonic device, 25 electric control valve, 26 injection frame, 27 breathable frame, 28 exhaust interface, 29 drying chamber, 30 pretreatment chamber. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figures 1 to 7 A metal processing parts drying system includes a heating frame 1, which is placed on the ground through a plurality of brackets 3 fixedly installed on the lower end surface of the heating frame 1. Sealing doors 2 are rotatably installed at the upper and lower sides of the side wall of the heating frame 1. A breathable frame 27, a sealing plate 22 and a fixed frame 16 are fixedly installed in the heating frame 1 from top to bottom in sequence. The breathable frame 27, the sealing plate 22 and the fixed frame 16 divide the interior of the heating frame 1 into four areas. A pretreatment chamber 30 is set above the breathable frame 27, and a drying chamber 29 is set below the sealing plate 22.

[0029] A gas tank 4 placed on a platform or the ground is provided on one side of the heating frame 1, and carbon dioxide is stored in the gas tank 4. The output ends of the gas tank 4 are respectively connected to the first air inlet pipe 5 and the second air inlet pipe 6. The end of the first air inlet pipe 5 away from the gas tank 4 is connected to the interior of the drying chamber 29, and the end of the second air inlet pipe 6 away from the gas tank 4 is connected to the interior of the pretreatment chamber 30. The input end of the gas tank 4 is connected to a return air pipe 7, and the end of the return air pipe 7 away from the gas tank 4 is connected to an exhaust fan 8 fixedly installed on the heating frame 1, and the input end of the exhaust fan 8 is connected to the interior of the pretreatment chamber 30. An exhaust interface 28 connected to the interior of the heating frame 1 is fixedly installed on the top of the heating frame 1.

[0030] A compound pump 9 is fixedly installed on the side wall of the other end of the heating frame 1 by bolts or welding. The input end of the compound pump 9 is connected to an exhaust pipe 11. The upper end of the exhaust pipe 11 is connected to the interior of the pretreatment chamber 30. A dryer 10 is detachably installed on the exhaust pipe 11. The dryer 10 is a prior art, and its specific structural design is not repeated here. It is used to dry the carbon dioxide gas flowing through the exhaust pipe 11. The output end of the compound pump 9 is connected to a pressurizing pipe 12. The lower end of the pressurizing pipe 12 is connected to the interior of the drying chamber 29. When the compound pump 9 is started, the carbon dioxide in the pretreatment chamber 30 can be pressurized and filled into the drying chamber 29, so that the pretreatment chamber 30 is in a low-pressure state, while the interior of the drying chamber 29 is in a high-pressure state, so as to achieve different drying effects in conjunction with the heating effect of the heating frame 1.

[0031] A driving motor 13 is fixedly installed on the bottom wall of the heating frame 1 by bolts or welding. The output end of the driving motor 13 rotates through the bottom wall of the heating frame 1 and is keyed to a connecting rod 14. The top of the connecting rod 14 is located below the sealing plate 22 and is fixedly installed with a stirring blade 15. A driving gear 18 is fixedly installed on a section of the connecting rod 14 located inside the fixed frame 16. The driving gear 18 is meshed with multiple driven gears 17 around it. While the driving gear 18 is meshed with the driven gear 17, it can also support it. A circle of tooth grooves is provided on the inner wall of the fixed frame 16. The tooth grooves are meshed with the driven gear 17 and support it to a certain extent. When the driving motor 13 is running, the driving gear 18 can drive multiple driven gears 17 to rotate synchronously, and the multiple driven gears 17 can revolve around the driving gear 18 while rotating.

[0032] A placement cavity 19 is provided on the upper end surface of the driven gear 17, and a plurality of micro-pillars 20 imitating lotus leaf micro-nano structures are evenly distributed on the bottom wall of the placement cavity 19. The micro-pillars 20 are made of carbon dioxide-repellent material (such as modified PTFE). When the metal workpiece is placed in the placement cavity 19, its lower end surface contacts the upper end surface of the micro-pillars 20, thereby reducing the contact area between the metal workpiece and the placement cavity 19 and avoiding the accumulation of supercritical carbon dioxide in the placement cavity 19. A plurality of through holes 21 are evenly provided on the bottom wall of the placement cavity 19 to enhance the fluidity of supercritical carbon dioxide at the bottom of the metal workpiece.

[0033] A plurality of ultrasonic devices 24 are fixedly installed at the lower end of the sealing plate 22. The ultrasonic device 24 is a prior art and its specific structural design is not described in detail here. The number of ultrasonic devices 24 corresponds to the number of driven gears 17. A waveguide cover 23 is fixedly mounted on the working end of the ultrasonic device 24. The pulse frequency of the ultrasonic device 24 matches the rotation speed of the driven gear 17 to avoid energy waste and local overheating caused by continuous emission of ultrasonic waves.

[0034] An injection frame 26 is arranged between the air permeable frame 27 and the sealing plate 22. The lower end of the injection frame 26 passes through the sealing plate 22 and is connected to the interior of the drying chamber 29. An electric control valve 25 is detachably installed at the lower end of the injection frame 26. The electric control valve 25 is used to control the opening and closing of the injection frame 26.

[0035] When the present invention is used, firstly, the sealing door 2 is opened to place the metal workpieces that need to be pretreated and the metal workpieces that can be directly dried into the air permeable frame 27 and the placement chamber 19 respectively, the sealing door 2 is closed, the middle electric control valve 25 is opened, the air inside the device is discharged by using the exhaust interface 28, and then the gas storage tank 4 is opened to add carbon dioxide into the heating frame 1 through the first air inlet pipe 5 and the second air inlet pipe 6 to ensure that the metal workpieces are in the carbon dioxide atmosphere, the electric control valve 25 is closed, the compound pump 9 is started, and the carbon dioxide in the pretreatment chamber 30 is pressurized and filled into the drying chamber 29, and the metal workpieces in the pretreatment chamber 30 are transferred by the gas of the compound pump 9 to make the pretreatment chamber 30 in a low-pressure state, and at the same time, the metal workpieces in the air permeable frame 27 are subjected to low-pressure drying treatment in cooperation with the heating effect of the heating frame 1, and the low-pressure drying mainly uses the pressure reduction to reduce the boiling point of water, so that the water can be vaporized at a lower temperature. In this way, most of the free water on the surface of the metal workpieces can be quickly and effectively removed.

[0036] Then, the carbon dioxide is dried by the dryer 10, and the heating frame 1 is started to heat the internal carbon dioxide, waiting for the drying chamber 29 to reach the specified pressure. The purpose of this treatment is that although low-pressure drying can remove most of the free water, a small amount of moisture and some organic impurities may still remain in the microscopic pores and surface depressions of the metal processing parts. Under the conditions of pressurization and temperature increase (temperature higher than 31.1°C, pressure higher than 7.38MPa), the carbon dioxide in the metal processing parts in the drying chamber 29 gradually changes from a gaseous state to a supercritical state. Supercritical carbon dioxide has good permeability. It can penetrate into these microstructures, dissolve and bring out the remaining moisture and impurities, and can effectively dissolve and remove those moisture and organic impurities that are difficult to remove by conventional methods, thereby making the metal processing parts reach a higher degree of cleanliness.

[0037] During the drying process, the driving motor 13 drives the connecting rod 14 to rotate, and the connecting rod 14 drives the driving gear 18 and the stirring blade 15 to rotate. The rotation of the stirring blade 15 generates turbulence, which breaks the laminar state of the supercritical carbon dioxide and increases the contact frequency and area between the supercritical carbon dioxide and the surface of the metal workpiece; the turbulence reduces the thickness of the stationary supercritical carbon dioxide boundary layer on the surface of the metal workpiece, and accelerates the dissolution and diffusion of the residue; the rotating supercritical carbon dioxide forms a dynamic flow field, covering the complex geometric structure on the surface of the metal workpiece, and enhancing the drying effect.

[0038] The driving gear 18 cooperates with the fixed frame 16 to drive the driven gear 17 to rotate. The centrifugal force generated by the rotation of the driven gear 17 throws the liquid inside the metal workpiece to the surface. The revolution of the driven gear 17 further expands the disturbance range of the supercritical carbon dioxide to ensure full contact with the metal workpiece, and ensures that all metal workpiece surfaces are periodically exposed to the ultrasonic action area. Then, the ultrasonic device 24 in the waveguide 23 is started, and the ultrasonic pulse is triggered when the metal workpiece enters the sound field focusing area, ensuring that the cavitation effect occurs in the area that needs cleaning most; the waveguide (made of silicon nitride) guides the ultrasonic wave to form a focused sound field to avoid energy scattering. The cavitation bubbles generated by the ultrasonic wave explode in the residual liquid film, and the pollutants with strong impact bonding force are generated by the micro jet. The rotation disturbance enhances the diffusion rate of the supercritical carbon dioxide in the micropores and dissolves the residues. At the same time, the ultrasonic wave acts on the micro column 20, causing the micro column 20 to vibrate at a high frequency, so that the residues on the surface of the metal workpiece can be better separated from the metal workpiece in the drying chamber 29. After the processing is completed, the metal workpiece in the pretreatment chamber 30 has also been processed. The middle electric control valve 25 is opened, and the supercritical carbon dioxide enters the low-pressure pretreatment chamber 30 from the high-pressure drying chamber 29 through the injection frame 26, and expands instantly and undergoes a phase change (supercritical state → gas state), the volume increases sharply, the dissolving power is enhanced, and the dissolving ability of the residue is enhanced; the phase change energy (expansion work) of the supercritical carbon dioxide is used to clean the metal workpiece in the pretreatment chamber 30 again by airflow impact, which further improves the processing effect of the pretreated metal workpiece and further improves the utilization rate of carbon dioxide.

[0039] Finally, the exhaust fan 8 is turned on to dry the carbon dioxide and return it to the gas storage tank 4 through the return pipe 7, so as to achieve the recycling of carbon dioxide. Carbon dioxide plays a role in the drying process during the transfer process and the process of changing the form, and the energy utilization rate is relatively high.

[0040] Finally, the metal parts that have completed the drying process and the metal parts that have completed the pretreatment are taken out and respectively carried out the next step of treatment.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal workpiece drying system, comprising a heating frame (1), an exhaust port (28) being installed on the top of the heating frame (1), and sealing doors (2) being rotatably installed at both upper and lower positions of a side wall at one end of the heating frame (1), characterized in that: The heating frame (1) is fixedly provided with a breathable frame (27), a sealing plate (22) and a fixed frame (16) in order from top to bottom; a pretreatment chamber (30) is provided above the breathable frame (27); a drying chamber (29) is provided below the sealing plate (22); a carbon dioxide supply mechanism is placed on one side of the heating frame (1); the carbon dioxide supply mechanism is connected to the drying chamber (29) and the pretreatment chamber (30); A carbon dioxide pressurizing mechanism is installed on the side wall at the other end of the heating frame (1), and the carbon dioxide pressurizing mechanism is connected to the drying chamber (29) and the pretreatment chamber (30); A stirring mechanism is provided inside the fixed frame (16), and a spraying assembly is provided between the air permeable frame (27) and the sealing plate (22).

2. The metal processing parts drying system according to claim 1, characterized in that: The carbon dioxide supply mechanism comprises a gas storage tank (4), wherein carbon dioxide is stored in the gas storage tank (4), and the output end of the gas storage tank (4) is respectively connected to a first air inlet pipe (5) and a second air inlet pipe (6), wherein an end of the first air inlet pipe (5) away from the gas storage tank (4) is connected to the interior of a drying chamber (29), and an end of the second air inlet pipe (6) away from the gas storage tank (4) is connected to the interior of a pretreatment chamber (30).

3. The metal processing parts drying system according to claim 2, characterized in that: The input end of the gas storage tank (4) is connected to a return air pipe (7), and one end of the return air pipe (7) away from the gas storage tank (4) is connected to an exhaust fan (8) fixedly mounted on the heating frame (1), and the input end of the exhaust fan (8) is in communication with the interior of the pretreatment chamber (30).

4. The metal processing parts drying system according to claim 1, characterized in that: The carbon dioxide pressurizing mechanism comprises a compound pump (9) fixedly mounted on the heating frame (1); an input end of the compound pump (9) is connected to an exhaust pipe (11); an end of the exhaust pipe (11) away from the compound pump (9) is in communication with the interior of the pretreatment chamber (30); an output end of the compound pump (9) is connected to a pressurizing pipe (12); an end of the pressurizing pipe (12) away from the compound pump (9) is in communication with the interior of the drying chamber (29).

5. The metal processing parts drying system according to claim 4, characterized in that: A dryer (10) is detachably mounted on the exhaust pipe (11) and is used to dry the carbon dioxide gas flowing through the exhaust pipe (11).

6. The metal processing parts drying system according to claim 1, characterized in that: The stirring mechanism comprises a driving motor (13) fixedly mounted on the bottom wall of the heating frame (1); the output end of the driving motor (13) rotates through the bottom wall of the heating frame (1) and is keyed to be connected to a connecting rod (14); a driving gear (18) is fixedly mounted on a section of the connecting rod (14) located inside the fixed frame (16); a plurality of driven gears (17) are meshingly connected to the driving gear (18); a circle of tooth grooves is provided on the inner side wall of the fixed frame (16); the driven gear (17) is meshingly connected to the tooth grooves; and a placement component is provided on the upper end of the driven gear (17).

7. The metal processing parts drying system according to claim 6, characterized in that: The placement component comprises a placement cavity (19) opened on the upper end surface of the driven gear (17), a plurality of micro-pillars (20) with lotus leaf-like micro-nano structures are evenly distributed on the inner bottom wall of the placement cavity (19), the micro-pillars (20) are made of carbon dioxide-repellent material, and a plurality of through holes (21) are evenly opened on the bottom wall of the placement cavity (19).

8. The metal processing parts drying system according to claim 6, characterized in that: The top end of the connecting rod (14) is located below the sealing plate (22) and is fixedly mounted with a stirring blade (15).

9. The metal processing parts drying system according to claim 6, characterized in that: A plurality of ultrasonic devices (24) are fixedly mounted on the lower end of the sealing plate (22), the number of the ultrasonic devices (24) corresponding to the number of the driven gears (17), and a waveguide cover (23) is fixedly sleeved on the working end of the ultrasonic device (24), and the pulse frequency of the ultrasonic device (24) matches the rotation speed of the driven gear (17).

10. The metal processing parts drying system according to claim 1, characterized in that: The spray assembly comprises a spray frame (26) arranged between the air permeable frame (27) and the sealing plate (22); the lower end of the spray frame (26) passes through the sealing plate (22) and is communicated with the interior of the drying chamber (29); and an electric control valve (25) is detachably mounted on the lower end of the spray frame (26).

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