Eddy current damping type rotating nozzle and metal forging material surface cleaning device

Abstract

The invention discloses an eddy current damping type rotary nozzle and a metal forging material surface cleaning device. According to the eddy current damping type rotating nozzle, the damping disc made of the conductive material rotates in the magnetic field formed by the permanent magnet to generate eddy current, the eddy current generates damping torque, and when the damping torque and torque generated when the nozzle sprays are balanced, the rotating speed of the rotating shaft reaches a constant value. The speed is adjusted in an eddy current damping mode, and eddy current damping is in a non-contact mode, so that mechanical abrasion of ball centrifugal damping in related technologies is avoided, and the service life is prolonged. The magnet mounting disc moves in the axial direction by rotating the threaded twisting sleeve, the air gap between the damping disc and the permanent magnet is adjusted, flexible adjustment of the rotating speed of the spray head is achieved, and the problem that the rotating speed is fixed and difficult to adjust in the related technology is solved. In addition, the middle position of the damping disc serves as a part of the flow channel, so that fluid flowing through the flow channel takes away heat generated by the damping disc.

Description

Technical Field

[0001] This application belongs to the field of cleaning equipment technology, and in particular relates to a vortex damping rotary nozzle and a metal forging surface cleaning device. Background Technology

[0002] During the forging process, metal materials inevitably develop surface oxide scale due to the high temperatures involved. If not properly handled, this oxide scale can be pressed into the high-temperature, softer metal matrix during subsequent forging processes. This oxide scale forms defects such as pits, pits, and scratches on the forging surface, affecting the yield of subsequent forgings. Metal materials such as titanium alloys or high-temperature alloys are prone to surface cracks due to their cast structure defects, poor plasticity, high deformation resistance, and strong temperature sensitivity. With each forging pass, these surface cracks become increasingly finer. These subtle cracks significantly impact subsequent forging processes, and the oxide scale generated during forging is also forged into the interior along with these cracks. The difficulty in removing surface cracks lies in the dense oxide scale that forms on the surface of the forging during high-temperature forging. This oxide scale masks the tiny cracks, making them difficult to detect with the naked eye or through non-destructive testing, leading to missed detections and potential quality risks.

[0003] Common methods for treating oxide scale on forging surfaces include overall grinding or chemical cleaning. Overall grinding is time-consuming and labor-intensive, causes significant damage to titanium alloys, and the resulting dust pollutes the environment. Chemical cleaning, on the other hand, is inefficient and increases the burden on environmental protection and wastewater treatment. With the continuous growth in metal material production, the market demand for high-volume, automated, efficient, and environmentally friendly surface oxide scale removal technologies is becoming increasingly urgent. Summary of the Invention

[0004] This application provides a vortex-damped rotary nozzle and a metal forging surface cleaning device to solve the problems of low efficiency and environmental unfriendliness of existing processing methods.

[0005] To achieve the above objectives, this application provides the following technical solution.

[0006] According to a first aspect of this application, an embodiment of this application provides a vortex-damped rotary nozzle, comprising: a nozzle housing having an inlet; a rotating shaft including a damping disc made of conductive material, the rotating shaft having a flow channel penetrating the damping disc, the rotating shaft being rotatably mounted within the nozzle housing; a jet nozzle connected to the end of the rotating shaft, the jet nozzle including a plurality of nozzles, the jetting direction of the nozzles being the resultant direction of a direction parallel to the axial direction and a direction parallel to the tangent direction, the torque generated when the nozzles jets driving the rotating shaft to rotate; at least one adjustable-pitch magnet support plate, each of the adjustable-pitch magnet support plates including: a magnet mounting plate; a bushing coaxially disposed on the nozzle housing; and a threaded torsion sleeve. The threaded torsion sleeve is rotatably mounted on the bushing, and the magnet mounting plate is threadedly connected to the threaded torsion sleeve; a fixed pin is mounted on the nozzle housing and passes through a positioning hole on the magnet mounting plate; multiple permanent magnets are evenly distributed along the circumference of the magnet mounting plate, with adjacent permanent magnets having opposite polarities; an adjustable air gap exists between the damping disc and the permanent magnets, and the threaded torsion sleeve drives the magnet mounting plate to move axially along the fixed pin when rotating to adjust the air gap; when the damping disc rotates, it generates eddy currents in the magnetic field formed by the permanent magnets, and the eddy currents generate damping torque. When the damping torque is equal to the torque generated when the nozzle sprays, the rotational speed of the rotating shaft reaches a constant value.

[0007] In some possible implementations, the vortex-damped rotary nozzle includes two adjustable-pitch magnet support disks, which are arranged opposite to each other along the axial direction of the damping disks.

[0008] In some possible implementations, in the two adjustable-pitch magnet support disks, the permanent magnets at corresponding positions have opposite polarities on the side closer to the damping disk.

[0009] In some possible implementations, the damping disc is made of copper, and the flow channel extends through the center of the damping disc.

[0010] In some possible implementations, the rotating shaft further includes a voltage stabilizing shaft and a speed increasing shaft, which are respectively connected to the two ends of the damping disk.

[0011] In some possible implementations, the nozzle housing is provided with a rotating sealing ring at the inlet and outlet of the nozzle.

[0012] According to a second aspect of this application, an embodiment of this application provides a metal forging surface cleaning device, comprising: a mobile platform; a liftable material placement platform disposed in the middle of the mobile platform; a dual-sided cooperating four-jaw chuck, the dual-sided cooperating four-jaw chuck comprising two four-jaw chucks disposed on both sides of the mobile platform; an actuator disposed on one side of the mobile platform; and a high-pressure rotary jet drying integrated device, the high-pressure rotary jet drying integrated device being mounted on the actuator, the high-pressure rotary jet drying integrated device comprising the vortex damping rotary nozzle and drying device described in the embodiment of this application.

[0013] In some possible implementations, the liftable material placement platform includes a platform body and a lifting mechanism; the top of the platform body is a V-shaped support surface for supporting forgings; the lifting mechanism is used to drive the platform body to rise and fall; the lifting mechanism includes a lifting platform, a power mechanism, a lead screw, a lead screw nut, and a scissor arm; the top of the lifting platform is connected to the bottom of the platform body, and the bottom of the lifting platform is connected to the moving platform via the scissor arm; the power mechanism is connected to the lead screw and is used to drive the lead screw to rotate; the lead screw has reverse threads on both sides, and two lead screw nuts are respectively disposed at both ends of the lead screw and engage with the corresponding reverse threads; the lead screw nuts are connected to the scissor arm.

[0014] In some possible implementations, the mobile platform is provided with guide rails on both sides, and each four-jaw chuck is slidably mounted on the guide rails; each four-jaw chuck is provided with a gear and rack mechanism, and the four-jaw chuck moves along the guide rails under the drive of the gear and rack mechanism, so that the two four-jaw chucks on both sides of the mobile platform move synchronously.

[0015] In some possible implementations, the high-pressure rotary jet drying device is mounted on the actuator via a connecting plate; the actuator is a three-axis truss or a robotic arm.

[0016] This application provides an eddy current damped rotary nozzle. An eddy current is generated by a damping disc made of conductive material rotating within a magnetic field formed by a permanent magnet. The damping torque generated by the eddy current balances with the (driving) torque generated during nozzle spraying, resulting in a constant rotational speed. This application uses eddy current damping for speed regulation. Because eddy current damping is non-contact, it avoids the mechanical wear caused by ball-bearing centrifugal damping in related technologies, extending the service life of the eddy current damped rotary nozzle. This application uses a rotating threaded sleeve to move the magnet mounting disc along the axial direction of the fixed pin, adjusting the air gap between the damping disc and the permanent magnet, thereby achieving flexible adjustment of the nozzle speed and solving the problem of difficult-to-adjust fixed speed in related technologies. Furthermore, this application uses the middle position of the damping disc as part of a flow channel, allowing the fluid flowing through this channel to carry away the heat generated by the damping disc under the eddy current damping effect. This application also provides a metal forging surface cleaning device that uses an eddy current damped rotary nozzle to clean the forging surface. High-pressure jets, through the self-rotation of the nozzle, form a large-scale annular jet impact zone, achieving comprehensive removal of oxide scale from the forging surface. Compared with traditional grinding methods, this improves cleaning efficiency and uses clean water as the cleaning medium, avoiding environmental pollution. Furthermore, this application utilizes a height-adjustable material placement platform to accommodate forgings of different heights; synchronous movement of dual-sided coordinated four-jaw chucks clamps and flips forgings of different lengths; a moving platform that travels along ground rails reduces the travel distance of the actuator, facilitating the overall cleaning of longer forgings; and a high-pressure rotary jet drying integrated device combines the vortex-damped rotary nozzle and the drying device, enabling continuous operation of forging surface removal, cleaning, and drying. Additionally, this application allows for adjustment of process parameters such as nozzle jet pressure, nozzle rotation speed, and nozzle-to-forging surface distance to meet the treatment requirements of different metal materials. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of a vortex-damped rotary nozzle provided in an embodiment of this application.

[0019] Figure 2 This is a cross-sectional view of the vortex-damped rotary nozzle in an embodiment of this application, wherein the magnet mounting plate has been moved to the first limit position of the fixing pin.

[0020] Figure 3 This is an explosion diagram of the vortex-damped rotating nozzle in an embodiment of this application.

[0021] Figure 4 This is another schematic diagram of the vortex-damped rotary nozzle in the embodiments of this application.

[0022] Figure 5 This is a schematic diagram of the jet direction and reaction force direction of the vortex-damped rotary nozzle in the embodiments of this application.

[0023] Figure 6 This is a schematic diagram showing the distribution between the permanent magnet and the damping disk in an embodiment of this application.

[0024] Figure 7 This is a side view of the vortex-damped rotary nozzle in an embodiment of this application, wherein the magnet mounting plate has been moved to the second limit position of the fixing pin.

[0025] Figure 8 This is a three-dimensional schematic diagram of a metal forging surface cleaning device provided in an embodiment of this application.

[0026] Figure 9 This is a schematic diagram of the structure of the mobile platform in the embodiments of this application.

[0027] Figure 10 This is a schematic diagram of the structure of the liftable material placement platform in the embodiments of this application.

[0028] Figure 11 This is a schematic diagram of the structure of the placement platform body in the embodiment of this application.

[0029] Figure 12 This is a schematic diagram of the lifting mechanism in the embodiments of this application.

[0030] Figure 13 This is a schematic diagram showing the connection between the lead screw nut and the scissor arm in an embodiment of this application.

[0031] Figure 14 This is a schematic diagram of a dual-sided cooperative four-jaw chuck in an embodiment of this application.

[0032] Figure 15 This is a schematic diagram of the gear and rack mechanism in the embodiments of this application.

[0033] Figure 16 This is a schematic diagram of the actuator in the embodiment described in this application, wherein the actuator controls the high-pressure rotary jet drying integrated device to perform drying operations.

[0034] Figure 17 This is a schematic diagram of the high-pressure rotary jet drying integrated device in the embodiments described in this application.

[0035] Figure 18 This is a schematic diagram of the annular jet impact zone in the embodiments described in this application.

[0036] Explanation of some figure labels: 1. Metal forging surface cleaning device; 100. Vortex-damped rotary nozzle; 110. Nozzle housing; 111. Upper section of the outer casing; 112. Lower section of the outer casing; 113. Bolt holes; 114. Water inlet; 120. Rotary shaft; 121. Voltage stabilizing shaft; 122. Damping disc; 123. Speed ​​increasing shaft; 130. Jet nozzle; 131. Diffuser disk; 132. Nozzle; 140. Bearing; 150. Adjustable pitch magnet support plate; 151. Magnet mounting plate; 152. Bushing; 153. Threaded torque sleeve; 154. Fixed pin; 155. Permanent magnet; 160. Rotary sealing ring; 200. Mobile platform; 210. Slide rail; 300. Liftable material placement platform; 310. Placement platform body; 311. V-shaped support surface; 320. Lifting mechanism; 321. Lifting platform; 322. Lead screw; 323. Lead screw nut; 324. Scissor arm; 3241. First arm; 3242. Second arm; 400. Dual-sided cooperative four-jaw chuck; 410. Four-jaw chuck; 411. Jaw; 420. Guide rail; 430. Gear and rack mechanism; 431. Gear; 432. Rack; 500. Actuator; 510. Connecting plate; 600. High-pressure rotary jet drying integrated device; 610. Drying device; 900. Forging material. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] During the forging process, metal materials inevitably develop surface oxide scale due to the high temperatures involved. If not properly handled, this oxide scale can be pressed into the high-temperature, softer metal matrix during subsequent forging, forming defects such as pits, pits, and scratches on the forging surface, affecting the yield of subsequent forgings. Traditional methods for treating surface oxide scale on forgings include overall grinding or chemical cleaning. Overall grinding is time-consuming and labor-intensive, causing significant wear and tear on titanium alloys, and the resulting dust pollutes the environment. Chemical cleaning is inefficient and increases the burden on environmental protection and wastewater treatment.

[0039] To address the aforementioned issues, the industry has proposed using high-pressure jetting for forging surface treatment. While high-pressure jetting offers advantages such as low cost and minimal environmental pollution, existing jet nozzles still suffer from the following drawbacks: Firstly, externally driven nozzles, such as electrically or pneumatically driven ones, require an external power source to rotate, resulting in higher costs and greater maintenance difficulties. Secondly, while self-driven nozzles lack external power, their rotational speed is difficult to control; excessively high speeds can cause abnormal atomization or whistling noises. Existing self-driven nozzles employ two methods to control rotational speed: ball-bearing centrifugal damping and damping fluid speed limiting. However, both methods have drawbacks: ball-bearing centrifugal damping uses the centrifugal force of the balls to generate friction and limit rotational speed. Due to this contact friction method, long-term use can lead to mechanical wear and even potential failure of the speed limiting function. Damping fluid speed limiting limits the maximum rotational speed by immersing the rotating shaft in damping fluid. This requires additional fluid channels, making the entire structure more complex, and there is a risk of damping fluid leakage. Furthermore, the rotational speeds limited by both of these speed control methods are difficult to adjust, making it impossible to flexibly change the nozzle rotational speed.

[0040] In view of this, this application provides a vortex-damped rotary nozzle and a surface cleaning device for metal forgings. The vortex-damped rotary nozzle of this application includes: a nozzle housing with a water inlet; a rotating shaft including a damping disc made of conductive material, a flow channel penetrating the damping disc inside the rotating shaft, and rotatably mounted within the nozzle housing; a jet nozzle connected to the end of the rotating shaft, the jet nozzle including multiple nozzles, the jetting direction of the nozzles being the resultant direction of a direction parallel to the axis and parallel to the tangent, the torque generated when the nozzles jets driving the rotating shaft to rotate; at least one adjustable-pitch magnet support plate, each of the adjustable-pitch magnet support plates including: a magnet mounting plate; a bushing coaxially disposed on the nozzle housing; and a threaded torque sleeve rotatably disposed on the bushing. The magnet mounting plate is threadedly connected to the threaded torsion sleeve. A fixed pin is located on the nozzle housing and passes through a positioning hole on the magnet mounting plate. Multiple permanent magnets are evenly distributed along the circumference of the magnet mounting plate, with adjacent permanent magnets having opposite polarities. An adjustable air gap exists between the damping plate and the permanent magnets. When the threaded torsion sleeve rotates, it drives the magnet mounting plate to move axially along the fixed pin to adjust the air gap. When the damping plate rotates, it generates eddy currents in the magnetic field formed by the permanent magnets. These eddy currents produce damping torque. When the damping torque balances the torque generated during nozzle spraying, the rotational speed of the rotating shaft reaches a constant value, i.e., the eddy current damped rotating nozzle (hereinafter referred to as the nozzle) has a stable rotational speed. This application uses eddy current damping for speed regulation. Since eddy current damping is non-contact, it avoids the mechanical wear caused by the ball centrifugal damping method used in related technologies, allowing the nozzle to maintain its speed regulation performance during long-term operation and extending its service life. Furthermore, this application uses a rotating threaded torsion sleeve to move the magnet mounting plate along the axial direction of the fixed pin, adjusting the air gap between the damping plate and the permanent magnet. The change in air gap affects the eddy current damping strength, thereby achieving flexible adjustment of the nozzle rotation speed and solving the problem of difficult adjustment of a fixed rotation speed in related technologies. This application also provides a metal forging surface cleaning device. The metal forging surface cleaning device includes: a moving platform; a liftable material placement platform, the liftable material placement platform being located in the middle of the moving platform; a double-sided cooperating four-jaw chuck, the double-sided cooperating four-jaw chuck including two four-jaw chucks located on both sides of the moving platform; an actuator, the actuator being located on one side of the moving platform; and a high-pressure rotary jet drying integrated device, the high-pressure rotary jet drying integrated device being mounted on the actuator, the high-pressure rotary jet drying integrated device including the eddy current damped rotary nozzle and drying device described in the embodiments of this application.The metal forging surface cleaning device described in this application effectively solves the problems of low cleaning efficiency and environmental unfriendliness of existing grinding and chemical cleaning methods through the coordinated operation of its components.

[0041] The following will provide a more detailed description of the vortex-damped rotary nozzle and the metal forging surface cleaning device described in this application, with reference to the accompanying drawings.

[0042] See Figures 1 to 7 In one embodiment of this application, the eddy current damped rotary nozzle 100 includes: a nozzle housing 110, a rotating shaft 120, a jet nozzle 130, and an adjustable distance magnet support disk 150.

[0043] See Figure 2 , Figure 3 , Figure 4 and Figure 6 In this embodiment, the nozzle housing 110 includes an upper section 111 and a lower section 112. The upper section 111 and the lower section 112 are coaxially connected. Bolt holes 113 are provided on the outermost layer of both the upper and lower sections 111 and 112, for inserting bolts to secure them. The nozzle housing 110 has a water inlet 114; specifically, a pipe thread is provided at the water inlet 114 of the upper section 111 for connecting a fluid, such as water, which is low-cost and pollution-free. The nozzle housing 110 provides protection and structural support for the entire nozzle. Because the nozzle housing 110 is made of metal, it also serves to concentrate the magnetic circuit.

[0044] Furthermore, in this embodiment of the application, a rotary sealing ring 160 is provided at the inlet 114 and outlet (not shown in the figure) of the nozzle housing 110 to prevent fluid leakage during long-term use.

[0045] See Figure 2 , Figure 3 and Figure 4 In this embodiment, the rotating shaft 120 (or "central rotating shaft") is installed inside the nozzle housing 110. The rotating shaft 120 includes a pressure-stabilizing shaft 121, a damping disk 122, and a speed-increasing shaft 123. The pressure-stabilizing shaft 121 and the speed-increasing shaft 123 are respectively connected to the two ends of the damping disk 122, and the pressure-stabilizing shaft 121, the damping disk 122, and the speed-increasing shaft 123 are connected sequentially. Specifically, the pressure-stabilizing shaft 121 and the speed-increasing shaft 123 are coaxially connected to the damping disk 122 by a threaded connection. Further, the rotating shaft 120 has a flow channel inside, in which fluid flows. The pressure-stabilizing shaft 121 is used to stabilize the fluid pressure, the flow channel inside the damping disk 122 also plays a pressure-stabilizing role, and the speed-increasing shaft 123 increases the fluid velocity by at least partially narrowing its internal flow channel.

[0046] In this embodiment, the jet nozzle 130 is connected to the end of the rotating shaft 120. Specifically, the jet nozzle 130 is installed at the end of the speed-increasing shaft 123 of the rotating shaft 120 via a threaded connection. The jet nozzle 130 may include a diffuser disk 131 and a plurality of nozzles 132. Specifically, the end of the speed-increasing shaft 123 is provided with an external thread, and the diffuser disk 131 is threadedly connected to the end of the speed-increasing shaft 123. A plurality of nozzles 132 are evenly distributed on the diffuser disk 131, preferably four nozzles 132. (See also...) Figure 5 Each nozzle 132 sprays in the direction of the combined direction of the axis of rotation 120 and the tangential direction of the circumference of the diffuser 131. When the nozzle 132 sprays, the reaction force (tangential component) generated by the jet produces a (driving) torque on the diffuser 131. This torque is transmitted to the axis of rotation 120 through the diffuser 131, causing the axis of rotation 120 to rotate within the nozzle housing 110 under the support of the bearing 140. As a result, the high-pressure jet forms a large-scale annular jet impact zone through the self-rotation of the nozzle 100 (i.e., the axis of rotation 120 and the jet nozzle 130), achieving a large-area cleaning effect.

[0047] See Figure 2 , Figure 3 and Figure 4 In this embodiment, the eddy current damped rotary nozzle 100 includes two adjustable-pitch magnet support disks 150. The two adjustable-pitch magnet support disks 150 are arranged opposite each other along the axial direction of the damping disk 122 (i.e., the axial direction of the rotation shaft 120), preferably symmetrically. Each adjustable-pitch magnet support disk 150 may include: a magnet mounting disk 151, a bushing 152, a threaded torque sleeve 153, a fixing pin 154, and a plurality of permanent magnets 155. The bushing 152 is coaxially mounted on the nozzle housing 110. The threaded torque sleeve 153 is rotatably mounted on the bushing 152 and coaxial with the bushing 152. One end of the threaded torque sleeve 153 has a polygonal cutout, exemplarily a hexagonal cutout, to facilitate rotational operation with a tool (such as a wrench). The magnet mounting disk 151 and the threaded torque sleeve 153 are threadedly connected. Specifically, the threaded sleeve 153 has threads on its exterior, and the magnet mounting plate 151 engages with the threaded sleeve 153 through its internal thread. A fixing pin 154 is mounted on the nozzle housing 110 along the axial direction of the rotation axis 120 and passes through a positioning hole on the magnet mounting plate 151, allowing the magnet mounting plate 151 to move along the axial direction of the fixing pin 154. Multiple permanent magnets 155 are evenly distributed along the circumference of the magnet mounting plate 151. Specifically, eight permanent magnets 155 are evenly distributed along the circumference of the magnet mounting plate 151, and adjacent permanent magnets 155 have opposite polarities to form a periodically changing magnetic field along the circumference of the magnet mounting plate 151. Furthermore, in the two adjustable-pitch magnet support plates 150, the permanent magnets 155 at corresponding positions have opposite polarities on the side closer to the damping plate 122, such as... Figure 6As shown. That is to say, for the two permanent magnets 155 at corresponding positions on both sides of the damping disk 122, if the polarity of one permanent magnet 155 on the side closer to the damping disk 122 is N or S, then the polarity of the other permanent magnet 155 on the side closer to the damping disk 122 is S or N. This configuration can enhance the magnetic field strength and improve the damping uniformity.

[0048] In this embodiment, the damping disk 122 in the rotating shaft 120 is disc-shaped and made of a conductive material, such as copper, which has good conductivity. The torque generated when the nozzle 132 sprays drives the rotating shaft 120 to rotate. Under the action of the magnetic field formed by the permanent magnet 155, the damping disk 122 generates an eddy current damping effect, thereby achieving speed regulation. It should be noted that the principle of speed regulation by eddy current damping effect is as follows: When a metal conductor (such as a disc-shaped metal conductor) rotates in a magnetic field, it cuts magnetic field lines. According to Faraday's law of electromagnetic induction, eddy currents, i.e., "eddy currents," are generated inside the metal conductor. The eddy currents are subjected to Ampere's force in the magnetic field. According to Lenz's law, the direction of this force always opposes the relative motion between the metal conductor and the magnetic field, forming a damping torque that opposes rotation. The resistance of the metal conductor itself converts the eddy current energy into heat energy for dissipation, continuously consuming rotational kinetic energy and achieving stable speed control. In this embodiment, eddy current damping is used for speed regulation. Since eddy current damping is non-contact, it avoids the mechanical friction and wear caused by ball centrifugal damping in related technologies.

[0049] In this embodiment, when the eddy current damped rotary nozzle 100 is working, fluid (high-pressure water injected by a high-pressure pump) is introduced through the inlet 114 of the nozzle housing 110. The fluid flows inside the rotating shaft 120, and after being stabilized by the flow channels of the pressure stabilizing shaft 121 and the damping disk 122 of the rotating shaft 120, it enters the flow channel of the speed-increasing shaft 123. The flow channel inside the speed-increasing shaft 123 narrows, increasing the fluid velocity. The fluid enters the jet nozzle 130 and is ejected at high speed along the nozzle 132 at its end. At this time, the rotating shaft 120 and the jet nozzle 130 begin to rotate, and the damping disk 122 rotates with the rotating shaft 120, generating eddy currents in the magnetic field formed by the permanent magnet 155. These eddy currents generate damping torque. When the nozzle 100 rotates at a low speed, the damping torque is very small, and the rotating shaft 120 and the jet nozzle 130 can start smoothly. As the rotation speed of the nozzle 100 gradually increases, the damping torque increases accordingly. When the damping torque increases to be equal to the torque generated when the nozzle 132 sprays, the two reach a balance, the rotational speed no longer increases, and the rotational speed of the nozzle 100 stabilizes at a certain constant value.

[0050] In this embodiment, an adjustable air gap exists between the damping disc 122 and the permanent magnet 155. When the threaded sleeve 153 is rotated, the threaded engagement between the threaded sleeve 153 and the magnet mounting disc 151 causes the magnet mounting disc 151 to move axially along the damping disc 122 under the guidance of the fixed pin 154, moving away from or closer to the damping disc 122. This adjusts the size of the air gap between the damping disc 122 and the permanent magnet 155, changes the eddy current damping intensity, and thus adjusts the rotational speed of the nozzle 100. This solves the problem in related technologies where the maximum rotational speed limited by ball centrifugal damping and damping liquid speed limiting methods is difficult to adjust.

[0051] It should be noted that, for reference Figure 2 When the magnet mounting plate 151 moves to the first limit position of the fixed pin 154, in this embodiment, that is, the magnet mounting plate 151 is limited to the outer wall of the upper section 111 of the nozzle housing 110, the air gap between the permanent magnet 155 and the damping plate 122 is the smallest. At this time, the generated magnetic field is the largest, and the corresponding eddy current damping intensity is the largest. (See reference...) Figure 7 When the magnet mounting plate 151 moves to the second limit position of the fixed pin 154, in this embodiment, the fixed pin 154 is a pin, and the magnet mounting plate 151 is limited to the pin head at one end of the pin. The air gap between the permanent magnet 155 and the damping plate 122 is the largest air gap. At this time, the generated magnetic field is the smallest, and the corresponding eddy current damping intensity is the smallest.

[0052] See Figure 2 In this embodiment, the damping disk 122 is made of a material with high thermal and electrical conductivity, such as copper. A flow channel inside the rotating shaft 120 passes through the center of the damping disk 122. When fluid flows through this channel, it carries away the heat generated by the damping disk 122 under the eddy current damping effect. In this way, the temperature of the damping disk 122 can remain relatively stable, preventing heat accumulation and ensuring that the damping torque generated by the eddy current remains stable during long-term operation, thus achieving a stable speed regulation effect.

[0053] See Figures 8 to 18 This application provides a metal forging surface cleaning device 1 in one embodiment. The metal forging surface cleaning device 1 is suitable for cleaning the oxide scale from the surface of metal forgings 900 (hereinafter referred to as forgings 900) during the forging process. The metal forging surface cleaning device 1 is adaptable to forgings 900 with a square or circular cross-section, and is suitable for most sizes of forgings 900. The forgings 900 can be loaded using a forklift or a bridge crane.

[0054] In this embodiment, the metal forging surface cleaning device 1 may include: a mobile platform 200, a liftable material placement platform 300, a double-sided cooperating four-jaw chuck 400, an actuator 500, and a high-pressure rotary jet drying integrated device 600.

[0055] See Figures 8 to 10 as well as Figure 14 Specifically, in this embodiment, the mobile platform 200 is the main platform supporting the liftable material placement platform 300 and the dual-sided cooperative four-jaw chuck 400. The mobile platform 200 is connected to the ground via a slide rail 210. Driven by a motor, the mobile platform 200 moves along the slide rail 210, reducing the travel distance of the actuator 500, thereby completing the overall cleaning of the longer forging 900.

[0056] See Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 In this embodiment, the liftable material placement platform 300 is positioned in the middle of the mobile platform 200. The liftable material placement platform 300 includes a platform body 310 and a lifting mechanism 320. (See also...) Figure 11 The top of the placement platform body 310 is a V-shaped support surface 311, which can accommodate and position square forgings or bars of different sizes. The lifting mechanism 320 is used to drive the lifting and lowering of the placement platform body 310. (See reference...) Figure 12 and Figure 13 The lifting mechanism 320 includes a lifting platform 321, a power mechanism (not shown in the figure), a lead screw 322, a lead screw nut 323, and a scissor arm 324. The top of the lifting platform 321 is flat and connected to the bottom of the placement platform body 310. (See reference...) Figure 9 , Figure 10 and Figure 12 The bottom of the lifting platform 321 is connected to the moving platform 200 via a scissor arm 324. A power mechanism is connected to a lead screw 322 to drive its rotation. The lead screw 322 has reverse threads on both sides, and two lead screw nuts 323 are respectively located at both ends of the lead screw 322 and engage with the corresponding reverse threads. The scissor arm 324 includes a first arm 3241 and a second arm 3242. The first arm 3241 and the second arm 3242 of the scissor arm 324 are hinged to the lead screw nuts 323. The first arm 3241 of the scissor arm 324 is hinged to the lifting platform 321, and the second arm 3242 of the scissor arm 324 is hinged to the moving platform 200. When the height of the liftable material placement platform 300 needs to be adjusted, the lead screw 322 is driven to rotate by the power mechanism. Since the lead screw 322 has reverse threads on both sides, the two lead screw nuts 323 are respectively engaged with the reverse threads on the corresponding sides. Due to the opposite rotation of the threads, they move towards each other, pushing the scissor arms 324 connected to it. This causes the first arm 3241 and the second arm 3242 of the scissor arms 324 to rotate, raising the lifting platform 321, thereby adjusting the placement height of the forging 900.

[0057] See Figure 14In this embodiment, the dual-sided cooperative four-jaw chuck 400 includes two four-jaw chucks 410 disposed on both sides of the mobile platform 200. Preferably, the two four-jaw chucks 410 are symmetrically disposed on both sides of the mobile platform 200. Guide rails 420 are provided on both sides of the mobile platform 200, and each four-jaw chuck 410 is slidably mounted on the guide rail 420. (See also...) Figure 15 Each four-jaw chuck 410 has a gear and rack mechanism 430 at its bottom, which includes a gear 431 and a rack 432. The gear 431 and rack 432 cooperate with each other to serve as a drive mechanism. Driven by the gear and rack mechanism 430, the two four-jaw chucks 410 move along the guide rail 420, causing the two four-jaw chucks 410 on both sides of the moving platform 200 to move synchronously along the length of the forging 900. When the forging 900 needs to be rotated, the placement height of the forging 900 is adjusted by the liftable material placement platform 300, so that the axis of the forging 900 is coaxial with the central axis of the four-jaw chuck 410. After achieving coaxiality, the two four-jaw chucks 410 on both sides of the moving platform 200 move towards the center of the moving platform 200. After moving a preset distance, the jaws 411 of the four-jaw chuck 410 clamp the forging 900 and rotate the forging 900 by a preset angle (e.g., 180° or 120°).

[0058] See Figure 16 In this embodiment, the actuator 500 is disposed on one side of the mobile platform 200. The actuator 500 can be a three-axis truss or a robotic arm. The actuator 500 is used to support the high-pressure rotary jet drying integrated device 600. The high-pressure rotary jet drying integrated device 600 includes the vortex-damped rotary nozzle 100 and the drying device 610 of this embodiment. Specifically, the vortex-damped rotary nozzle 100 and the drying device 610 are mounted on the end of the actuator 500 via a connecting plate 510. The actuator 500 controls the position and angle of both the vortex-damped rotary nozzle 100 and the drying device 610 to adapt to forgings 900 of different sizes and specifications, as well as different cleaning process requirements.

[0059] In this embodiment, the high-pressure rotary jet drying integrated device 600 is the main device for cleaning the forging material 900. As mentioned above, see [link to relevant documentation]. Figure 16 and Figure 17 The high-pressure rotary jet drying integrated device 600 may include a vortex-damped rotary nozzle 100 and a drying device 610. The specific structure and function of the vortex-damped rotary nozzle 100 (hereinafter referred to as nozzle 100) are as described above and will not be detailed here. The nozzle 100 is connected to a high-pressure fluid, and the jet reaction force drives the nozzle 100 to rotate at high speed. Under the rotation of the nozzle 100, the high-pressure jet forms a large-scale annular jet impact zone. (See reference...) Figure 18The diameter D of the annular jet impact zone is approximately related to the distance L from the nozzle 132 to the forging surface as follows: D = 1.1L + 25 (in mm). The annular jet impact zone has a large coverage area, allowing the actuator 500 to completely remove the oxide scale from the forging surface without complex trajectory planning. Subsequently, the high-pressure pump increases the fluid flow rate, performing high-flow-rate cleaning on the forging surface to thoroughly flush away the removed oxide scale fragments, thus completing the surface cleaning.

[0060] It should be noted that when using nozzle 100 to clean the surface of the forging, the distance from the tip of nozzle 100 (nozzle 132) to the surface of the forging should be controlled between 30mm and 200mm, and the fluid pressure supplied to nozzle 132 by the high-pressure pump should be controlled between 150MPa and 350MPa. Of course, the fluid pressure and the distance from nozzle 132 to the surface of the forging can be adjusted according to actual conditions to change the impact intensity of the jet on the forging surface, adapting to different metal substrates and different cleaning process requirements. Furthermore, the linear velocity of the actuator 500 moving the vortex-damped rotating nozzle 100 should not exceed 500mm / s to ensure coverage of the forging surface. During the process of peeling off the oxide scale from the forging surface, a "bow" shaped trajectory is used, with partial overlap between each trajectory. The width of the overlap should be at least approximately 25mm to effectively peel off the oxide scale from the forging surface.

[0061] See Figure 16 In this embodiment of the application, the drying device 610 in the high-pressure rotary jet drying integrated device 600 is used to dry the cleaned forging surface, thereby completing the cleaning process of the oxide scale on the forging surface.

[0062] The process flow of using the metal forging surface cleaning device 1 described in this application will be further explained below.

[0063] Step 1: Load the forging 900 to the middle area of ​​the liftable material placement platform 300 using a truss or forklift crane. Input the parameters of the forging 900 (such as cross-sectional parameters) into the control console in advance. Use the V-shaped support surface 311 of the liftable material placement platform 300 to automatically position the square forging or round bar.

[0064] Step Two: Start the high-pressure pump. The high-pressure fluid drives the nozzle 100 to rotate. Adjust the nozzle 100 speed and fluid pressure according to process requirements. Under the rotation of the nozzle 100, the high-pressure jet forms an annular jet impact zone, impacting the surface of the forging. With the coordinated movement of the actuator 500 and the moving platform 200, the annular jet impact zone fully covers the surface of the forging to peel off the oxide scale exposed on the surface.

[0065] Step 3: After peeling is completed, the fluid flow rate is increased by using a high-pressure pump to clean the surface of the forging with a large flow rate, so as to completely flush away the peeled oxide scale fragments from the surface of the forging and complete the surface cleaning.

[0066] Step 4: The height of the liftable material placement platform 300 is adjusted to align the axis of the forging 900 with the central axis of the four-jaw chuck 410. Specifically, based on data pre-input to the control console, the axis height of the forging 900 is obtained, and the height of the liftable material placement platform 300 is adjusted accordingly to make the forging 900 coaxial with the two four-jaw chucks 410. Once coaxial, the two four-jaw chucks 410 move simultaneously from their initial positions toward the center of the liftable material placement platform 300. When both ends of the forging 900 extend a certain distance into the four-jaw chucks 410, the jaws 411 of the four-jaw chucks 410 clamp the forging 900. At this point, the liftable material placement platform 300 descends, creating space for flipping the forging 900. Subsequently, the two four-jaw chucks 410 rotate simultaneously in one direction to flip the forging 900, turning the uncleaned surface of the forging 900 to the top for subsequent cleaning. After being flipped into position, the liftable material placement platform 300 returns to its original position to support the forging 900. The jaws 411 of the two four-jaw chucks 410 open and simultaneously move away from the liftable material placement platform 300, returning to their initial positions.

[0067] Step 5: Repeat steps 2 and 3 to complete the cleaning of all oxide scale on the surface of the forging.

[0068] Step Six: After cleaning the surface of the forging, turn on the drying device 610. With the coordinated movement of the actuator 500 and the moving platform 200, the drying device 610 will fully cover and dry the surface of the forging. During the drying process, the forging 900 will be turned over to dry all surfaces of the forging 900.

[0069] Step 7: After cleaning the material surface, unload the material using a forklift or overhead crane.

[0070] It should be noted that there are two scenarios when removing oxide scale from the surface of forgings. The first scenario is when oxide scale is easily removed. In this case, the high-pressure pump provides normal or lower pressure. The rotation speed of the vortex-damped rotary nozzle 100 of the metal forging surface cleaning device 1 is relatively slow. To increase the rotation speed, the vortex damping strength can be adjusted, i.e., the resistance can be adjusted, specifically by reducing the resistance to increase the rotation speed, thereby improving the jet coverage and efficiency of the vortex-damped rotary nozzle 100. The second scenario is when oxide scale is more difficult to remove. In this case, the high-pressure pump needs to provide higher pressure (and flow rate). The rotation speed of the vortex-damped rotary nozzle 100 of the metal forging surface cleaning device 1 is relatively fast. If the rotation speed of the vortex-damped rotary nozzle 100 is too fast, the vortex damping strength can be adjusted, i.e., the resistance can be adjusted, specifically by increasing the resistance, thereby avoiding abnormal atomization caused by excessive rotation speed. If the rotational speed of the vortex-damped rotary nozzle 100 is relatively slow, the vortex damping intensity can be adjusted, i.e., the resistance can be adjusted, specifically by reducing the resistance, thereby improving the jet coverage and efficiency. It is worth noting that the ease of peeling determines the pressure provided by the high-pressure pump, i.e., the pressure generated when the nozzle 132 of the vortex-damped rotary nozzle 100 sprays. The pressure provided by the high-pressure pump determines the rotational speed of the vortex-damped rotary nozzle 100. By adjusting the vortex damping intensity, the rotational speed can be further adjusted to achieve the desired effect.

[0071] The following two embodiments will illustrate the process of cleaning the surface of metal forgings using a vortex-damped rotary nozzle 100.

[0072] Example 1: In Embodiment 1 of this application, a metal forging surface cleaning device is provided. This metal forging surface cleaning device can be used to clean titanium alloy square forgings. The forging 900 has a cross-sectional side length of 200mm and a length of 4000mm, and is in the final stage of heat treatment. The surface of the forging is covered with a large amount of oxide scale and a small number of micro-cracks. The processing requirement is to remove the oxide scale from the surface of the forging by cleaning, exposing the surface cracks for subsequent crack grinding. The specific processing flow of the metal forging surface cleaning device of this application is as follows: 101. The forging material 900 is loaded onto the middle area of ​​the liftable material placement platform 300 via the truss. The parameters of the forging material 900 (e.g., the side length of the cross section is 200mm, the cross section shape is square, and the length of the forging material 900 is 4000mm) are input into the control console. Using the V-shaped support surface 311 on the top of the liftable material placement platform 300, the two adjacent sides of the square forging material are made to fit against the V-shaped support surface 311 of the liftable material placement platform 300, thus completing the loading and positioning.

[0073] 102. The moving platform 200 moves, bringing the forging 900 within the working range of the actuator 500. The actuator 500 then moves the vortex-damped rotary nozzle 100 to the end face of the forging 900, aligning it with the cleaning start position. The vortex-damped rotary nozzle 100 begins to rotate, driven by the high-pressure water flow from the high-pressure pump. According to the requirements for exposing surface cracks, the pressure and flow rate of the high-pressure pump are adjusted so that the pressure generated by the nozzle 132 of the vortex-damped rotary nozzle 100 is 200 MPa, the nozzle 100 speed is adjusted to 1250 r / min, the distance from the nozzle 132 to the forging surface is 160 mm, and the diameter of the annular jet impact zone is 201 mm (i.e., greater than the side length of the forging cross-section). At this point, the actuator 500 remains stationary, and the moving platform 200 translates at a speed of 300 mm / s, ensuring the annular jet impact zone fully covers the forging surface, achieving maximum efficiency in peeling while ensuring the exposure of surface cracks.

[0074] 103. After completing the surface peeling of the first side of the square forging, the moving platform 200 returns to the initial position and repeats step 102 to peel off the adjacent second side above the square forging 900.

[0075] 104. After machining the two upper surfaces (first and second surfaces) of the square forging 900, the height-adjustable material placement platform 300 adjusts its height to align the axis of the forging 900 with the central axis of the two four-jaw chucks 410. This is achieved by pre-inputting data to the control console to obtain the axis height of the forging 900, and then adjusting the height of the height-adjustable material placement platform 300 accordingly, ensuring coaxiality between the forging 900 and the two four-jaw chucks 410. Once coaxial, the two four-jaw chucks 410 simultaneously move from their initial positions toward the center of the height-adjustable material placement platform 300. When both ends of the forging 900 extend into the four-jaw chucks 410 to a certain depth (500mm), the jaws 411 of the four-jaw chucks 410 clamp the forging 900. At this point, the height-adjustable material placement platform 300 lowers by 300mm, providing space for flipping the forging 900. Subsequently, both four-jaw chucks 410 simultaneously rotate 180° in one direction to flip the forging 900, turning its uncleaned surface upwards for easier subsequent cleaning. After flipping, the liftable material placement platform 300 returns to its original position to support the forging 900. The jaws 411 of the two four-jaw chucks 410 open and simultaneously move away from the liftable material placement platform 300, returning to their initial positions.

[0076] 105. Repeat steps 102 and 103 above to complete the cleaning of all oxide scale on the surface of the forging.

[0077] 106. After cleaning the surface of the forging, turn on the drying device 610. The operation method is the same as steps 102 to 103 above. With the coordinated movement of the actuator 500 and the moving platform 200, the drying device 610 (air knife) is used to fully cover and dry the surface of the forging. During the drying process, the forging 900 is flipped once to dry all surfaces of the forging 900.

[0078] 107. After cleaning the surface of the forging, unload the material using a forklift or bridge crane.

[0079] Example 2: In Embodiment 2 of this application, a metal forging surface cleaning device is provided. This metal forging surface cleaning device can be used to clean high-temperature alloy bars. The bar has a diameter of 300 mm, a circular cross-section, and a length of 3500 mm. After forging, its surface is covered with a large amount of oxide scale. The processing requirement is to clean all the oxide scale from the forging surface to improve the quality of subsequent processing. The specific processing flow of the metal forging surface cleaning device of this application is as follows: 201. Load the bar stock into the middle area of ​​the liftable material placement platform 300 using a forklift crane. Input the parameters of the bar stock (e.g., cross-sectional diameter of 300mm, cross-sectional shape of a circle, and bar stock length of 3500mm) into the control console. Utilize the V-shaped support surface 311 on the top of the liftable material placement platform 300 to make the circumferential surface of the bar stock tangent to the V-shaped support surface 311 of the liftable material placement platform 300, with the bar stock axis located in the middle of the liftable material placement platform 300.

[0080] 202. The moving platform 200 moves, bringing the bar stock within the working range of the actuator 500. The actuator 500 drives the vortex-damped rotary nozzle 100 to the end face of the bar stock, aligning it with the cleaning start position. The high-pressure water flow from the high-pressure pump drives the vortex-damped rotary nozzle 100 to begin rotating. To completely remove the surface oxide scale, due to the strong adhesion of the oxide scale on this type of high-temperature alloy surface, the pressure and flow rate of the high-pressure pump need to be adjusted so that the pressure generated by the nozzle 132 of the vortex-damped rotary nozzle 100 is 350MPa, the nozzle 100 rotation speed is adjusted to 1500r / min, the distance from the nozzle 132 to the surface of the bar stock is 40mm, and the diameter of the annular jet impact zone is 66mm. At this time, based on the cylindrical surface shape of the bar stock, the actuator 500 drives the nozzle 100 to reciprocate within a 120° range along the circumference of the bar stock to clean the surface area of ​​the bar stock currently facing upward (the first 1 / 3 circumferential surface area, i.e., the 120° area). The linear speed of movement is 150 mm / s, while the moving platform 200 moves at a speed of 50 mm / s. Under these conditions, it can be ensured that the surface oxide scale in this area is fully peeled off.

[0081] 203. After the first surface peeling of the material is completed, the height-adjustable material placement platform 300 adjusts its height to align the height of the bar's axis with the central axis of the four-jaw chuck 410. This is achieved by obtaining the bar's axis height through pre-input data to the control console and adjusting the height of the height-adjustable material placement platform 300 accordingly, making the bar coaxial with the two four-jaw chucks 410. Once coaxial, the two four-jaw chucks 410 simultaneously move from their initial positions toward the center of the height-adjustable material placement platform 300. When both ends of the bar are inserted into the four-jaw chucks to a certain depth (500mm), the jaws 411 of the four-jaw chucks 410 clamp the bar. At this point, the height-adjustable material placement platform 300 lowers by 300mm to allow space for flipping the bar. Subsequently, the two four-jaw chucks 410 simultaneously rotate 120° in one direction to flip the bar, causing the second 1 / 3 of the bar's circumferential surface area to be flipped upwards, facilitating the subsequent second cleaning. After being flipped into position, the liftable material placement platform 300 returns to its original position to support the bar stock. The jaws 411 of the two four-jaw chucks 410 open and simultaneously move away from the liftable material placement platform 300, returning to their initial positions.

[0082] 204. Repeat the cleaning process of step 202 above to clean the currently facing surface area (i.e., the second 1 / 3 circumferential surface area).

[0083] 205. After the second cleaning is completed, repeat the flipping process of step 203. The two four-jaw chucks 410 rotate 120° in one direction at the same time to flip the bar stock so that the third 1 / 3 circumferential surface area of ​​the bar stock is flipped to the top, which is convenient for the subsequent third cleaning.

[0084] 206. Repeat the cleaning process of step 202 above to clean the currently facing surface area (i.e., the third 1 / 3 circumferential surface area) to complete the cleaning of all surfaces of the bar stock in order to remove the oxide scale from all surfaces.

[0085] 207. After cleaning, turn on the drying device 610, and perform it in the same way as steps 202 to 206 above. With the coordinated movement of the actuator 500 and the moving platform 200, the drying device 610 (air knife) is used to fully cover and dry the surface of the bar stock. During the drying process, the bar stock is turned over twice to dry all surfaces of the bar stock.

[0086] 208. After cleaning the surface of the bar stock, unload it using a forklift.

[0087] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The features, structures, or characteristics described above can be combined in any suitable manner in one or more embodiments.

[0088] It is understood that those skilled in the art can combine various implementation methods in the above embodiments under the guidance of the above examples to obtain technical solutions with multiple implementation methods. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vortex-damped rotary nozzle, characterized in that, The device includes: a nozzle housing with a water inlet; a rotating shaft including a damping disc made of conductive material, a flow channel penetrating the damping disc inside the rotating shaft, and the rotating shaft being rotatably mounted inside the nozzle housing; and a jet nozzle connected to the end of the rotating shaft, the jet nozzle including multiple nozzles, the jetting direction of the nozzles being the resultant direction of a direction parallel to the axis and a direction parallel to the tangent, the torque generated when the nozzles jet drives the rotating shaft to rotate. At least one adjustable-pitch magnet support plate, each of the adjustable-pitch magnet support plates comprising: a magnet mounting plate; a bushing coaxially disposed on the nozzle housing; a threaded torsion sleeve rotatably disposed on the bushing, the magnet mounting plate being threadedly connected to the threaded torsion sleeve; a fixed pin disposed on the nozzle housing and passing through a positioning hole on the magnet mounting plate; a plurality of permanent magnets uniformly distributed along the circumference of the magnet mounting plate, the polarities of adjacent permanent magnets being opposite; an adjustable air gap between the damping plate and the permanent magnets, wherein the threaded torsion sleeve, when rotating, drives the magnet mounting plate to move along the axial direction of the fixed pin to adjust the air gap; the damping plate, when rotating, generates eddy currents in the magnetic field formed by the permanent magnets, the eddy currents generating damping torque, and when the damping torque is equal to the torque generated when the nozzle sprays, the rotational speed of the rotating shaft reaches a constant value.

2. The vortex-damped rotary nozzle as described in claim 1, characterized in that, It includes two adjustable-pitch magnet support disks, which are arranged opposite to each other along the axial direction of the damping disk.

3. The vortex-damped rotary nozzle as described in claim 2, characterized in that, In the two adjustable-pitch magnet support disks, the permanent magnets at corresponding positions have opposite polarities on the side closer to the damping disk.

4. The vortex-damped rotary nozzle as described in claim 1, characterized in that, The damping disc is made of copper, and the flow channel runs through the center of the damping disc.

5. The vortex-damped rotary nozzle as described in claim 1, characterized in that, The rotating shaft also includes a voltage stabilizing shaft and a speed increasing shaft, which are respectively connected to the two ends of the damping disk.

6. The vortex-damped rotary nozzle as described in claim 1, characterized in that, The nozzle housing is equipped with rotating sealing rings at both the inlet and outlet.

7. A surface cleaning device for metal forgings, characterized in that, include: Mobile platform; A liftable material placement platform is located in the middle of the mobile platform; A dual-sided cooperating four-jaw chuck, comprising two four-jaw chucks disposed on both sides of the mobile platform; An actuator is disposed on one side of the mobile platform; A high-pressure rotary jet drying integrated device, wherein the high-pressure rotary jet drying integrated device is mounted on the actuator, and the high-pressure rotary jet drying integrated device includes a vortex damping rotary nozzle and a drying device as described in any one of claims 1 to 6.

8. The metal forging surface cleaning device as described in claim 7, characterized in that, The liftable material placement platform includes a platform body and a lifting mechanism; the top of the platform body is a V-shaped support surface for supporting forgings; the lifting mechanism is used to drive the platform body to rise and fall; the lifting mechanism includes a lifting platform, a power mechanism, a lead screw, a lead screw nut, and a scissor arm; the top of the lifting platform is connected to the bottom of the platform body, and the bottom of the lifting platform is connected to the moving platform via the scissor arm; the power mechanism is connected to the lead screw and is used to drive the lead screw to rotate; the lead screw has reverse threads on both sides, and two lead screw nuts are respectively located at both ends of the lead screw and engage with the corresponding reverse threads; the lead screw nuts are connected to the scissor arm.

9. The metal forging surface cleaning device as described in claim 8, characterized in that, The mobile platform is provided with guide rails on both sides, and each four-jaw chuck is slidably mounted on the guide rails; each four-jaw chuck is provided with a gear and rack mechanism, and the four-jaw chuck moves along the guide rails under the drive of the gear and rack mechanism, so that the two four-jaw chucks on both sides of the mobile platform move synchronously.

10. The metal forging surface cleaning device as described in claim 7, characterized in that, The high-pressure rotary jet drying integrated device is mounted on the actuator via a connecting plate; the actuator is a three-axis truss or a robotic arm.

Images