Surface treatment device for stainless steel acid-alkali-resistant anti-corrosion screw

Abstract

The invention discloses a stainless steel acid-alkali-resistant anti-corrosion screw surface treatment device, and particularly relates to the technical field of spraying equipment, the stainless steel acid-alkali-resistant anti-corrosion screw surface treatment device comprises a treatment tank, a transfer structure used for bearing screws is arranged in an inner cavity of the treatment tank, and the lower end of the treatment tank is filled with cleaning liquid used for pre-cleaning the screws; a cleaning assembly used for assisting in cleaning is arranged on the bottom wall of an inner cavity of the treatment tank, and the upper end of the treatment tank and the top wall of the inner cavity of the treatment tank are jointly provided with a spraying structure used for spraying Teflon. Through cooperation of the cleaning storage tank and the cleaning assembly, the screw cleaning effect is improved, and oil dirt and impurities are effectively removed; through cooperation of a driving cabinet, a lifting ring and a spraying assembly in the spraying structure, uniform spraying and rapid drying of Teflon paint are achieved, the coating quality is guaranteed, the acid and alkali resistance and corrosion resistance of screws are improved, all the structures are matched so that the device can adapt to treatment of screws of different specifications, and applicability and practicability are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spraying equipment, in particular to a stainless steel acid and alkali resistant anticorrosion screw surface treatment device. BACKGROUND

[0002] The technical field of spraying equipment includes devices and related technical systems for applying coatings to the surfaces of various types of workpieces to achieve specific functions. The core content of this technical field is to uniformly and stably attach coatings, anticorrosion materials, etc. to the surfaces of workpieces through specific device structures and operation processes to form functional coatings, covering device design and manufacturing, coating delivery systems, spraying execution mechanisms, workpiece positioning and conveying mechanisms, etc. It also involves the integration of auxiliary link technologies such as coating viscosity control, spraying pressure adjustment, and drying and curing during the spraying process to ensure coating quality. Among them, a stainless steel acid and alkali resistant anticorrosion screw surface treatment device refers to a special device that specifically processes the surface of stainless steel screws to endow them with acid and alkali resistant anticorrosion properties. The technical matters addressed by this device include screw surface cleaning, anticorrosion coating application, uniform coating distribution, and preliminary coating curing. Specifically, an ultrasonic cleaning module is set up to remove impurities from the surface of the screw, the screw is sent to the spraying chamber by the conveying belt, anticorrosion coating is sprayed by the high-pressure spray gun inside the chamber, and the screw is dried by the hot air circulation channel, while the screw is fixed by the screw positioning clamp.

[0003] The prior art only removes impurities from the surface of the screw through an ultrasonic cleaning module, conveys the screw to the spraying chamber by a conveying belt, sprays the coating by a high-pressure spray gun, dries it by a hot air circulation channel, and fixes the screw by a positioning clamp. The lack of a closed and stable processing space leads to external factors affecting the processing process, the lack of flexible clamping structures for different sizes of screws makes it difficult to adapt to processing of various specifications of screws, cleaning only relies on ultrasonic vibration and cannot achieve omnidirectional flushing and foam assisted cleaning, there is no structure to rotate the screw and swing the spray head during spraying, which leads to uneven distribution of the coating, and the drying link is not closely matched with the spraying, which affects the adhesion of the coating and the processing efficiency. These situations are particularly evident when processing screws of various specifications, which can easily cause unstable coating quality and insufficient applicability. SUMMARY

[0004] The main purpose of the present application is to provide a stainless steel acid and alkali resistant anticorrosion screw surface treatment device that can effectively solve the problems involved in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present application is: A surface treatment device for stainless steel acid and alkali resistant anti-corrosion screws includes a treatment tank, a cleaning storage tank located at the lower end of the treatment tank, a feeding port located at the front of the outer surface of the treatment tank, a transfer structure for carrying screws in the inner cavity of the treatment tank, a cleaning liquid for pre-cleaning the screws filling the lower end of the treatment tank, a cleaning component for auxiliary cleaning provided on the bottom wall of the inner cavity of the treatment tank, and a spraying structure for spraying Teflon on the upper end of the treatment tank and the top wall of its inner cavity.

[0006] Preferably, the transfer structure includes a drain basket slidably installed in the inner cavity of the processing tank. The lower end of the drain basket has a plurality of teeth arranged in a ring. The inner cavity of the drain basket is slidably connected to a drive plate. The outer surface of the drive plate is fixedly connected with a limiting wheel that is slidably connected to the inner wall of the processing tank. The upper end of the drain basket is provided with a top cover for closing the drain basket. The bottom wall of the inner cavity of the drain basket is provided with a plurality of bottom clamping components arranged in a ring. The upper part of the top wall of the inner cavity of the drain basket is provided with a plurality of top clamping components corresponding to the bottom clamping components. The lower end of the top cover is provided with a buffer spring.

[0007] Preferably, the spraying structure includes a drive cabinet installed on the upper end of the treatment tank, a lifting ring fixedly installed on the upper part of the inner cavity of the treatment tank, an electric shaft provided on the inner side of the lifting ring, and a cable fixedly connected to an adjacent limiting wheel wound around the outer surface of the shaft. A spraying assembly for spraying Teflon coating is rotatably connected to the top wall of the inner cavity of the treatment tank. The inner side of the drive cabinet is provided with a storage tank for storing Teflon coating, an air pump for driving the spraying, a drying fan, and a motor for driving the spraying assembly.

[0008] Preferably, a toothed ring is rotatably connected to the inner cavity of the drive plate, and a plurality of the top clamping components are rotatably mounted on the bottom wall of the inner cavity of the drive plate and extend to the lower end of the drive plate. The plurality of the top clamping components are engaged with the toothed ring. A through hole communicating with the lower end is provided on the upper end of the drive plate and the upper end of the toothed ring. A key groove that cooperates with the spraying component is provided on the inner surface of the through hole of the toothed ring.

[0009] Preferably, the top clamping assembly includes a gear rotatably mounted on the bottom wall of the inner cavity of the drive plate and meshing with a gear ring, and a mounting ring rotatably mounted on the lower end of the drive plate and drivenly connected to the lower end of the gear. The inner surface of the mounting ring is rotatably connected to a receiving groove for mounting a screw head, and the inner surface of the receiving groove has the same size and shape as the screw head.

[0010] Preferably, the inner surface of the receiving groove is provided with a plurality of sliding grooves distributed in a ring. Each of the sliding grooves has a pressing block slidably connected to its inner wall, and each of the sliding grooves has a wedge-shaped block slidably connected to its inner wall and fitting against the pressing block. A spring rod is fixedly connected to the upper end of each wedge block. The center rod of each spring rod extends through the inner cavity of the sliding groove to the upper end of the receiving groove and fits against the lower end of the mounting ring. The mounting ring has an arc-shaped block for pushing the spring rod. An L-shaped stop block for limiting the stroke of the spring rod is fixedly connected to the side of the arc block opposite to the direction of rotation. When the receiving groove is rotated, the spring rod slides at the lower end of the mounting ring and, under the action of the arc block, presses the pressing block downward to fit against the screw head. After the spring rod enters the recess of the L-shaped stop block on the upper side, it locks the screw head.

[0011] Preferably, the bottom clamping assembly includes a base installed on the bottom wall of the drain basket cavity. A magnetic ring is provided at the upper end of the base. Several clamping arms are arranged in a ring at the upper end of the base. The clamping arms are rotatably connected to the upper end of the base by torsion springs. A lever located in the inner cavity of the base is fixedly connected to the lower end of each clamping arm. A conical block is fixedly connected to the middle of the inner cavity of the base by a spring. A contact block is provided at the upper end of the base and fixedly connected to the upper end of the conical block by a short rod. A central block is fixedly connected to the bottom wall of the inner surface of the base. Several spring push rods that fit against the inclined surface of the conical block are arranged in a ring on the inner side of the central block. The side of the spring push rods away from the conical block overlaps with the adjacent lever.

[0012] Preferably, the cleaning assembly includes a water pipe rotatably mounted on the bottom wall of the inner cavity of the treatment tank and connected to a water pump inside the cleaning tank. A plurality of annularly distributed oblique nozzles are fixedly connected to the outer surface of the water pipe within the inner cavity of the treatment tank. A fixed plate is fixedly connected to the upper part of the outer surface of the water pipe. A plurality of elastic rods are fixedly connected to the outer surface of the fixed plate in an annular distribution. Each of the elastic rods, on the side away from the outer wall of the fixed plate, is fixedly connected to an impact ball corresponding to the tooth position. A plurality of foam nozzles with built-in foaming nets are annularly distributed on the upper part of the outer surface of the water pipe. When the cleaning tank supplies cleaning fluid to the water pipe, the cleaning fluid is sprayed out through the oblique nozzles and drives the water pipe to rotate, simultaneously driving the fixed plate to rotate so that the impact balls collide with the teeth.

[0013] Preferably, the spraying assembly includes a connecting pipe rotatably mounted on the top wall of the inner cavity of the treatment tank. A spline that mates with a keyway groove is fixedly connected to the outer surface of the connecting pipe. The connecting pipe is connected to a motor inside the drive cabinet via a coupling. Four sets of slots are opened on the outer wall of the connecting pipe, each slot having a sliding rod slidably connected to its inner wall. Paint nozzles, connected to the storage tank inside the drive cabinet via conduits, are rotatably arranged in an array on the inner sides of the four sets of slots. Buffer grooves, slidably connected to adjacent paint nozzles, are arranged in an array on the surfaces of several sliding rods. A spring disc, slidably connected to the inner wall of the connecting pipe, is fixedly connected to the lower ends of several sliding rods. An intermittent disc, slidably connected to the inner wall of the connecting pipe, is provided at the upper ends of several sliding rods. A drive rod, slidably connected to the motor inside the drive cabinet, is fixedly connected to the upper end of the intermittent disc drive plate. A drying pipe, connected to a drying fan inside the drive cabinet, is opened at the lower part of the outer surface of the connecting pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention provides a closed and stable space for screw processing through the cooperation of the processing tank and the transfer structure. The hollow design of the drain basket in the transfer structure enables rapid drainage, the limiting wheel ensures stable movement of the drive plate, and the top clamping component and the bottom clamping component work together to stably clamp screws of different sizes. The cooperation of the cleaning tank and the cleaning component improves the screw cleaning effect and effectively removes oil and impurities. The cooperation of the drive cabinet, lifting ring and the spraying component in the spraying structure enables uniform spraying and rapid drying of Teflon coating, ensuring coating quality and improving the screw's acid and alkali resistance and corrosion resistance. Moreover, the cooperation of each structure allows the device to process screws of different specifications, enhancing its applicability and practicality.

[0015] 2. This invention utilizes the engagement of the gear ring within the drive plate and the gear in the top clamping assembly to drive the screw to rotate stably, creating conditions for uniform spraying. The spline groove and the spline in the spraying assembly ensure stable power transmission. The engagement of the mounting ring, arc-shaped block, spring rod, and extrusion block in the top clamping assembly securely locks the heads of screws of different sizes. The engagement of the contact block, conical block, spring push rod, and clamping arm in the bottom clamping assembly automatically clamps the lower end of the screw. The magnetic ring on the base enhances stability, ensuring the screw is fixed in position during processing and improving coating quality and treatment effect.

[0016] 3. This invention provides power and a channel for the delivery of cleaning fluid through the cooperation of the cleaning tank and the water pipe in the cleaning assembly; through the cooperation of the water pipe and the angled nozzle, the cleaning fluid is sprayed out of the flushing screw and drives the water pipe to rotate, achieving all-round cleaning; through the cooperation of the water pipe, the fixed plate, the elastic rod and the impact ball, the impact ball collides with the teeth of the drain basket to generate vibration, simulating high-frequency vibration cleaning; through the cooperation of the water pipe and the foam nozzle with the built-in foaming net, foam is generated to enhance the oil stain removal ability, improving the cleaning effect in many ways and ensuring the quality of subsequent spraying.

[0017] 4. This invention achieves synchronous rotation of screws by cooperating with the connecting pipe and spline in the spraying assembly, combined with the drive cabinet motor driving the connecting pipe to rotate, laying the foundation for uniform spraying; through the cooperation of the drive rod, intermittent disc, sliding rod and buffer groove, the paint spray head is driven to swing up and down, so that the Teflon paint evenly covers the screws; through the cooperation of the connecting pipe and the drying pipe, hot air is delivered to quickly dry the screws of residual cleaning liquid and coating, avoiding affecting the coating adhesion and accelerating curing, thereby improving the screws' acid and alkali corrosion resistance and production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the processing tank of the present invention; Figure 3 This is a cross-sectional structural diagram of the drain basket of the present invention; Figure 4 This is a cross-sectional structural diagram of the drive board of the present invention; Figure 5 This is a schematic diagram of the top clamping assembly of the present invention; Figure 6 This is a schematic diagram showing the positional relationship of the extrusion blocks in this invention; Figure 7 This is a schematic diagram of the bottom clamping assembly of the present invention; Figure 8 This is a schematic diagram of the cleaning assembly of the present invention; Figure 9 This is a schematic diagram of the spraying assembly of the present invention.

[0019] In the diagram: 1. Processing tank; 2. Feed inlet; 3. Cleaning tank; 31. Cleaning assembly; 311. Water pipe; 312. Angled nozzle; 313. Fixed plate; 314. Elastic rod; 315. Impact ball; 316. Foam nozzle; 4. Transfer structure; 41. Drain basket; 411. Tooth; 412. Drive plate; 4121. Gear ring; 4122. Keyway groove; 413. Limiting wheel; 42. Top cover; 421. Buffer spring; 43. Top clamping assembly; 431. Gear; 432. Mounting ring; 433. L-shaped stop; 434. Arc block; 435. Receiving groove ; 436, Slide groove; 437, Wedge block; 438, Spring rod; 439, Extrusion block; 44, Bottom clamping assembly; 441, Base; 442, Center block; 443, Spring push rod; 444, Toggle rod; 445, Clamping arm; 446, Contact block; 447, Conical block; 5, Spraying structure; 51, Drive cabinet; 52, Lifting ring; 53, Spraying assembly; 531, Spline; 532, Connecting pipe; 533, Drive rod; 534, Intermittent disc; 535, Sliding rod; 536, Paint nozzle; 537, Buffer groove; 538, Spring disc; 539, Drying pipe. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1: A surface treatment device for stainless steel acid and alkali resistant anti-corrosion screws, see reference. Figure 1 and then Figure 2 The system includes a processing tank 1, which serves as the core load-bearing structure of the entire device, providing a closed and stable working space for the screw cleaning, drying, and spraying processes. A cleaning storage tank 3, located at the lower end of the processing tank 1, primarily stores the cleaning fluid and provides a liquid source for subsequent cleaning processes. A loading port 2, located on the front of the outer surface of the processing tank 1, is used for preparatory work before manual screw loading and operation, facilitating the installation of the screws to be processed onto designated components. The inner cavity of the processing tank 1 is equipped with a transfer structure 4 for carrying the screws, which can move the screws within the processing tank. The movement between different workstations within the tank enables the orderly connection of each process. The lower end of the treatment tank 1 is filled with cleaning fluid for pre-cleaning screws. This cleaning fluid can initially wet the screws, preparing them for subsequent deep cleaning. The bottom wall of the inner cavity of the treatment tank 1 is equipped with a cleaning component 31 for auxiliary cleaning. The cleaning component 31 can improve the cleaning effect and effectively remove oil and impurities from the screw surface. The upper end of the treatment tank 1 and the top wall of its inner cavity are jointly equipped with a spraying structure 5 for spraying Teflon. The spraying structure 5 can complete the uniform spraying and drying of the Teflon coating on the screw surface, ensuring the coating quality and improving the screw's acid and alkali resistance and corrosion resistance. For further details, please refer to [link / reference]. Figure 2 andFigure 3 The transfer structure 4 includes a drain basket 41 slidably installed inside the processing tank 1. The drain basket 41 has a hollow design, which allows for rapid drainage after cleaning, reducing cleaning fluid residue and providing good conditions for subsequent drying and spraying processes. Several teeth 411 are arranged in a ring at the lower end of the drain basket 41. The teeth 411 can cooperate with components in the cleaning assembly 31 to generate vibration, enhancing the cleaning effect. A drive plate 412 is slidably connected to the inner cavity of the drain basket 41. The drive plate 412 can drive the top clamping assembly 43 to move within the drain basket 41, meeting the screw position requirements of different processes. Limiting wheels 413 are fixedly connected to the surface of the surface in a ring and are slidably connected to the inner wall of the processing tank 1. The limiting wheels 413 can ensure that the drive plate 412 remains stable during movement and avoid displacement that affects the screw processing accuracy. The upper end of the drain basket 41 is provided with a top cover 42 for closing the drain basket 41. The top cover 42 can remain stationary in a specific process to help realize the conversion of the screw clamping state. Several bottom clamping components 44 are arranged in a ring on the bottom wall of the inner cavity of the drain basket 41. The bottom clamping components 44 cooperate with the top clamping components 43 to clamp the screw from both ends and ensure the stability of the screw during the processing. The upper part of the inner wall of the drain basket 41 is provided with several top clamping components 43 corresponding to the bottom clamping components 44. The top clamping components 43 can lock and unlock the screw head, adapt to different sizes of screw heads, and lock firmly to prevent the screw from loosening during subsequent operations. The lower end of the top cover 42 is provided with a buffer spring 421. The buffer spring 421 plays a buffering role when the drive plate 412 moves relative to the drain basket 41, to avoid damage caused by rigid collision between components. For further details, please refer to [link / reference]. Figure 2 The spraying structure 5 includes a drive cabinet 51 installed on the upper end of the treatment tank 1. The drive cabinet 51 provides power, paint, and hot air to the entire spraying structure 5 and is the core control and supply component for the spraying process. A lifting ring 52 is fixedly installed on the upper part of the inner cavity of the treatment tank 1. An electric shaft is provided on the inner side of the lifting ring 52, and a cable fixedly connected to the adjacent limit wheel 413 is wound around the outer surface of the shaft. The rotation of the electric shaft can control the lowering and retraction of the cable, thereby driving the drain basket 41 to move up and down, realizing the transfer of screws between different workstations. A spraying device is rotatably connected to the top wall of the inner cavity of the treatment tank 1. The Teflon coating spraying assembly 53 can complete the uniform spraying and hot air drying of Teflon coating to ensure coating quality. The drive cabinet 51 is equipped with a storage tank for storing Teflon coating, an air pump for driving the spraying, a drying fan, and a motor for driving the spraying assembly 53. The storage tank provides sufficient coating for spraying, the air pump provides power for coating spraying, the hot air generated by the drying fan can quickly dry the residual cleaning liquid and coating on the screw surface, and the motor provides power for the rotation of the spraying assembly 53 and the movement of the components. The coordinated work of all components ensures that the spraying process is carried out efficiently and orderly. In the operation of this embodiment, the cooperation between the processing tank 1 and the transfer structure 4 provides a closed and stable space for screw processing. The hollow design of the drain basket 41 in the transfer structure 4 enables rapid drainage, the limiting wheel 413 ensures the stable movement of the drive plate 412, and the cooperation between the top clamping component 43 and the bottom clamping component 44 enables stable clamping of screws of different sizes. The cooperation between the cleaning tank 3 and the cleaning component 31 improves the screw cleaning effect and effectively removes oil and impurities. The cooperation between the drive cabinet 51, the lifting ring 52 and the spraying component 53 in the spraying structure 5 enables uniform spraying and rapid drying of Teflon coating, ensuring coating quality and improving the screw's acid and alkali resistance and corrosion resistance. Moreover, the cooperation of each structure allows the device to adapt to the processing of screws of different specifications, enhancing its applicability and practicality.

[0022] Example 2: Based on Example 1, this example utilizes the engagement of the internal gear ring 4121 of the drive plate 412 with the gear 431 in the top clamping assembly 43 to drive the screw to rotate stably, creating conditions for uniform spraying. The spline groove 4122 and the spline 531 in the spraying assembly 53 cooperate to ensure stable power transmission. The engagement of the mounting ring 432, arc block 434, spring rod 438, and extrusion block 439 in the top clamping assembly 43 securely locks the heads of screws of different sizes. The engagement of the contact block 446, conical block 447, spring push rod 443, and clamping arm 445 in the bottom clamping assembly 44 automatically clamps the lower end of the screw. The magnetic ring of the base 441 enhances stability, ensuring the screw is fixed in position during processing and improving coating quality and processing effect.

[0023] For further details, please refer to [link / reference]. Figure 3 A gear ring 4121 is rotatably connected to the inner cavity of the drive plate 412. The rotation of the gear ring 4121 drives the top clamping assembly 43, which meshes with it, to rotate synchronously, thereby realizing the rotation of the screw and providing conditions for uniform spraying. Several top clamping assemblies 43 are rotatably mounted on the bottom wall of the inner cavity of the drive plate 412 and extend to the lower end of the drive plate 412. Several top clamping assemblies 43 mesh with the gear ring 4121. This meshing structure ensures that the gear ring 4121 can stably drive the top clamping assemblies 43 when it rotates. The drive plate 412 and the gear ring 4121 are both provided with through holes that communicate with the lower ends. The through holes provide channels for the components of the spraying assembly 53 to extend into and for the delivery of paint and hot air. The inner surface of the through hole of the gear ring 4121 is provided with a key groove 4122 that cooperates with the spraying assembly 53. The key groove 4122 cooperates with the spline 531 in the spraying assembly 53, which enables the spraying assembly 53 to drive the gear ring 4121 to rotate, thereby driving the top clamping assembly 43 and the screw to rotate, ensuring the uniformity of spraying. For further details, please refer to [link / reference]. Figure 5The top clamping assembly 43 includes a gear 431 rotatably mounted on the bottom wall of the inner cavity of the drive plate 412 and meshing with the gear ring 4121. The gear 431 plays a transmission role, transmitting the rotation of the gear ring 4121 to the mounting ring 432. The lower end of the drive plate 412 is rotatably mounted with the mounting ring 432, which is connected to the lower end of the gear 431. The mounting ring 432 provides a mounting base for the arc-shaped block 434 and the L-shaped stop block 433. At the same time, its rotation can cooperate with the receiving groove 435 to realize the action of the spring rod 438. The inner surface of the mounting ring 432 is rotatably connected with the receiving groove 435 for mounting the screw head. The receiving groove 435 provides an installation position for the screw head, ensuring that the head position of the screw is stable during processing. The inner surface of the receiving groove 435 has the same size and shape as the screw head. This fitting design can better fix the screw head and prevent the screw from shifting during rotation and processing. For further details, please refer to [link / reference]. Figure 5 and Figure 6 The inner surface of the receiving groove 435 is provided with several sliding grooves 436 arranged in a ring. The sliding grooves 436 provide sliding space for the extrusion block 439, wedge block 437 and spring rod 438 to ensure smooth operation of each component. The extrusion block 439 is slidably connected to the inner wall of each of the sliding grooves 436. Under the action of the spring rod 438 and the wedge block 437, the extrusion block 439 can approach and fit against the screw head to lock the screw head. The wedge block 437, which fits against the extrusion block 439, is slidably connected to the inner wall of each of the sliding grooves 436. The wedge block 437 converts the downward movement of the spring rod 438 into the lateral movement of the extrusion block 439 towards the screw head, playing the role of force transmission and conversion. The upper end of each wedge block 437 is fixedly connected to the spring rod 438. The spring rod 438 moves downward under the action of the arc block 434 to provide power for the movement of the extrusion block 439. The central rod of the spring rod 438 extends through the inner cavity of the slide groove 436 to the upper end of the receiving groove 435 and fits against the lower end of the mounting ring 432. This connection method ensures that the spring rod 438 can slide at the lower end of the mounting ring 432 and be acted upon by the arc-shaped block 434. The mounting ring 432 is provided with an arc-shaped block 434 for pushing the spring rod 438. When the mounting ring 432 and the receiving groove 435 rotate relative to each other, the arc-shaped block 434 pushes the spring rod 438 to move downward, thereby driving the wedge block 437 and the pressing block 439 to move. An L-shaped stop block 433 for limiting the stroke of the spring rod 438 is fixedly connected to the side of the arc-shaped block 434 opposite to the direction of rotation. The L-shaped stop block 433 can limit the spring rod 438 in the recess and keep the pressing block 439 locked to the screw head. When the receiving groove 435 is rotated, the spring rod 438 slides at the lower end of the mounting ring 432 and presses the pressing block 439 downward under the action of the arc block 434 so that it fits against the screw head. After the spring rod 438 enters the recess of the L-shaped stop block 433 on the upper side, it locks the screw head. This locking method can adapt to screw heads of different sizes and the locking is firm to prevent the screw from loosening in subsequent operations, ensuring the stability of the screw during the processing. For further details, please refer to [link / reference]. Figure 7 The bottom clamping assembly 44 includes a base 441 installed on the bottom wall of the inner cavity of the drain basket 41. The base 441 provides an installation foundation for other components of the bottom clamping assembly 44, ensuring the stability of each component. A magnetic ring is provided at the upper end of the base 441. The magnetic ring generates magnetic force to attract the lower end of the screw, further enhancing the clamping stability and preventing the screw from shifting during subsequent operations. Several clamping arms 445 are arranged in a ring at the upper end of the base 441. The clamping arms 445 can move towards the screw to clamp the lower end of the screw. The clamping arms 445 are rotatably connected to the upper end of the base 441 through torsion springs. The torsion springs provide a restoring force for the clamping arms 445, allowing the clamping arms 445 to return to their initial position when the clamping is released. Each of the clamping arms 445 is fixedly connected to a lever 444 located in the inner cavity of the base 441. The rotation of the lever 444 can drive the clamping arms 445 to rotate synchronously, realizing the clamping and releasing of the screw by the clamping arms 445. A conical block 447 is fixedly connected to the center of the inner cavity of the base 441 by a spring. The spring provides an upward restoring force to the conical block 447. After the screw leaves the contact block 446, the conical block 447 can return to its initial position. The upper end of the base 441 is provided with a contact block 446 fixedly connected to the upper end of the conical block 447 by a short rod. When the contact block 446 is pressed by the lower end of the screw, it drives the conical block 447 to move downward through the short rod. A central block 442 is fixedly connected to the bottom wall of the inner surface of the base 441. The central block 442 provides installation and support for the spring push rod 443, ensuring the stable operation of the spring push rod 443. Several rings are arranged on the inner side of the central block 442. The spring push rod 443, which is in contact with the inclined surface of the conical block 447, moves towards the lever 444 when the conical block 447 moves downward. The spring provides a restoring force for the spring push rod 443. The side of several spring push rods 443 away from the conical block 447 overlaps with the adjacent lever 444. When the spring push rod 443 moves, it pushes the lever 444 to rotate, thereby driving the clamping arm 445 to move and achieve clamping of the lower end of the screw. The entire bottom clamping assembly 44 can automatically achieve clamping when the screw descends to the designated position through the linkage of the mechanical structure. In addition, the magnetic ring further enhances the stability and ensures that the position of the screw is fixed in subsequent processing. In Example 3, based on Example 2, the cleaning tank 3 and the water pipe 311 in the cleaning assembly 31 work together to provide power and a channel for the delivery of cleaning fluid. The water pipe 311 and the angled nozzle 312 work together to spray cleaning fluid out of the flushing screw and drive the water pipe 311 to rotate, achieving all-round cleaning. The water pipe 311, the fixed plate 313, the elastic rod 314 and the impact ball 315 work together to make the impact ball 315 collide with the teeth 411 of the drain basket 41 to generate vibration, simulating high-frequency vibration cleaning. The water pipe 311 and the foam nozzle 316 with built-in foaming net are used to generate foam to enhance the oil stain removal ability, improve the cleaning effect in many ways, and ensure the quality of subsequent spraying.

[0024] For further details, please refer to [link / reference]. Figure 8 The cleaning assembly 31 includes a water pipe 311 rotatably mounted on the bottom wall of the inner cavity of the treatment tank 1 and connected to the water pump in the cleaning storage tank 3. The water pipe 311 provides a channel for the delivery of cleaning fluid, delivering the cleaning fluid in the cleaning storage tank 3 to each nozzle. The water pump in the cleaning storage tank 3 provides power for the delivery of cleaning fluid. Several annularly distributed inclined nozzles 312 are fixedly connected to the outer surface of the water pipe 311 located in the inner cavity of the treatment tank 1. The cleaning fluid sprayed from the inclined nozzles 312 can not only rinse the screws, but also generate a reaction force to drive the water pipe 311 to rotate, thereby achieving all-round cleaning of the screws. A fixing plate 313 is fixedly connected to the upper part of the outer surface of the water pipe 311. The fixing plate 313 rotates synchronously with the water pipe 311, providing an installation base for the elastic rods 314. Several elastic rods 314 are fixedly connected in a ring on the outer surface of the fixing plate 313. The elastic rods 314 are elastic and can buffer when the impact ball 315 collides with the tooth 411 to avoid damage to the components. On the side of each elastic rod 314 away from the outer wall of the fixing plate 313, an impact ball 315 corresponding to the position of the tooth 411 is fixedly connected. The impact ball 315 rotates with the fixed plate 313 and collides with the teeth 411. The resulting vibration is transmitted to the bottom of the drain basket 41, causing the cleaning liquid in the drain basket 41 to vibrate, simulating high-frequency vibration cleaning and improving the cleaning effect. Several foam nozzles 316 with built-in foaming nets are distributed in a ring on the upper part of the outer surface of the water pipe 311. The foaming net can make the cleaning liquid produce foam. The foam sprayed by the foam nozzles 316 enhances the ability to remove oil and impurities from the screw surface, ensuring the cleanliness of the screw surface to ensure the quality of subsequent spraying. When the cleaning tank 3 supplies cleaning fluid into the water pipe 311, the cleaning fluid is sprayed out through the angled nozzle 312 and drives the water pipe 311 to rotate. Simultaneously, the fixed plate 313 rotates, causing the impact ball 315 to collide with the tooth 411. All components work together to improve the cleaning effect from multiple aspects such as rinsing, vibration and foam cleaning, laying a good foundation for the subsequent spraying process. Example 4: Based on Example 3, this example utilizes the cooperation between the connecting pipe 532 and spline 531 in the spraying assembly 53, combined with the motor of the drive cabinet 51 driving the connecting pipe 532 to rotate, to achieve synchronous rotation of the screws, laying the foundation for uniform spraying. Through the cooperation of the drive rod 533, intermittent disc 534, sliding rod 535 and buffer groove 537, the paint nozzle 536 is driven to swing up and down, so that the Teflon paint evenly covers the screws. Through the cooperation of the connecting pipe 532 and the drying pipe 539, hot air is delivered to quickly dry the screws of residual cleaning liquid and coating, avoiding affecting the coating adhesion and accelerating curing, thereby improving the screws' acid and alkali resistance and corrosion resistance, as well as production efficiency.

[0025] For further details, please refer to [link / reference]. Figure 9 The spraying assembly 53 includes a connecting pipe 532 rotatably mounted on the top wall of the inner cavity of the treatment tank 1. The connecting pipe 532 provides a mounting base for components such as spline 531 and sliding rod 535, and its internal channel can be used for conveying paint and hot air. A spline 531 that mates with the spline groove 4122 is fixedly connected to the outer surface of the connecting pipe 532. After the spline 531 and the spline groove 4122 are engaged, the rotation of the connecting pipe 532 can drive the gear ring 4121 to rotate, which in turn drives the top clamping assembly 43 and screw to rotate, providing conditions for uniform spraying. The connecting pipe 532 is connected to the motor inside the drive cabinet 51 through a coupling. The motor provides power for the rotation of the connecting pipe 532 to ensure stable rotation of the connecting pipe 532. Four sets of slots are opened on the outer wall of the connecting pipe 532. Each slot has a sliding rod 535 slidably connected to its inner wall. The slot provides space for the sliding rod 535 to move up and down. The up and down movement of the sliding rod 535 can drive the paint nozzle 536 to swing up and down. The inner sides of the four slots are evenly distributed with rotatably connected paint nozzles 536 that are connected to the inner storage tank of the drive cabinet 51 through conduits. The conduits transport Teflon paint from the storage tank to the paint nozzles 536, and the paint nozzles 536 spray the paint to coat the screws. Several sliding rods 535 have buffer grooves 537 evenly distributed on their surfaces that are slidably connected to adjacent paint nozzles 536. When the sliding rods 535 move up and down, the buffer grooves 537 drive the paint nozzles 536 to swing up and down around the rotation point, while also playing a buffering role to avoid damage caused by rigid connections between components. Several sliding rods 535 are fixedly connected at their lower ends to a spring disc 538 that slides on the inner wall of the connecting pipe 532. The spring disc 538 provides an upward restoring force for the sliding rods 535, ensuring that the sliding rods 535 can move stably up and down under the action of the intermittent disc 534 and return to their initial position when no force is applied. Several sliding rods 535 are fixedly connected at their upper ends to an intermittent disc 534 that slides on the inner wall of the connecting pipe 532. The rotation of the intermittent disc 534 can drive the sliding rods 535 to move up and down cyclically, providing power for the oscillation of the paint spray head 536. The upper end of the intermittent disc 534 drive plate is fixedly connected to a drive rod 533 that is connected to the motor inside the drive cabinet 51. The motor drives the intermittent disc 534 to rotate through the drive rod 533, ensuring the stable operation of the intermittent disc 534. A drying pipe 539, which connects to the drying fan inside the drive cabinet 51, is provided on the lower part of the outer surface of the connecting pipe 532. The air duct delivers the hot air generated by the drying fan to the drying pipe 539, which in turn delivers the hot air to the surface of the screw. This quickly dries the residual cleaning liquid and coating on the screw surface, preventing the cleaning liquid from affecting the adhesion of the Teflon coating. At the same time, it accelerates the curing speed of the coating and improves production efficiency. During the spraying process, the motor inside the drive cabinet 51 drives the drive rod 533 to rotate. The drive rod 533 drives the intermittent plate 534 to move. The intermittent plate 534 drives the sliding rod 535 to move up and down cyclically. The sliding rod 535 drives the paint nozzle 536 to swing up and down through the buffer groove 537, so that the Teflon coating can be evenly covered on the surface of the screw, reducing the problem of uneven coating thickness and improving the screw's acid and alkali resistance.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A stainless steel acid and alkali resistant corrosion resistant screw surface treatment device, comprising a treatment tank (1), a cleaning storage tank (3) arranged at the lower end of the treatment tank (1), and a feeding port (2) opened in the front part of the outer surface of the treatment tank (1), characterized in that: The processing tank (1) is provided with a transfer structure (4) for carrying screws in the inner cavity, the lower end of the processing tank (1) is filled with cleaning liquid for pre-washing screws, the bottom wall of the inner cavity of the processing tank (1) is provided with a cleaning assembly (31) for assisting cleaning, and the upper end of the processing tank (1) and the top wall of the inner cavity are provided with a spraying structure (5) for spraying Teflon.

2. The acid and alkali resistant corrosion-proof stainless steel screw surface treatment device according to claim 1, characterized in that: The transfer structure (4) comprises a draining basket (41) slidably installed in the inner cavity of the processing tank (1), a plurality of teeth (411) are annularly arranged on the lower end of the draining basket (41), a driving plate (412) is slidably connected in the inner cavity of the draining basket (41), a plurality of limiting wheels (413) are slidably connected with the inner wall of the processing tank (1) and are fixedly connected in an annular manner on the outer surface of the driving plate (412), a top cover (42) is arranged on the upper end of the draining basket (41) and used for closing the draining basket (41), a plurality of bottom clamping assemblies (44) are annularly arranged on the bottom wall of the inner cavity of the draining basket (41), a plurality of top clamping assemblies (43) corresponding to the bottom clamping assemblies (44) are arranged on the upper part of the top wall of the inner cavity of the draining basket (41), and a buffer spring (421) is arranged on the lower end of the top cover (42).

3. The stainless steel acid and alkali resistant corrosion prevention screw surface treatment device according to claim 2, characterized in that: The spraying structure (5) comprises a driving cabinet (51) installed on the upper end of the processing tank (1), a lifting ring (52) is fixedly installed on the upper part of the inner cavity of the processing tank (1), an electric shaft is arranged on the inner side of the lifting ring (52), a rotating shaft of the electric shaft is wrapped and connected with a cable fixedly connected with adjacent limiting wheels (413), a spraying assembly (53) for spraying Teflon paint is rotatably connected with the top wall of the inner cavity of the processing tank (1), a storage tank for storing Teflon paint, a gas pump for driving spraying, a drying fan and a motor for driving the spraying assembly (53) are arranged on the inner side of the driving cabinet (51).

4. The stainless steel acid and alkali resistant corrosion prevention screw surface treatment device according to claim 3, characterized in that: The inner cavity of the driving plate (412) is rotatably connected with a gear ring (4121), a plurality of top clamping assemblies (43) are rotatably installed on the bottom wall of the inner cavity of the driving plate (412) and extend to the lower end of the driving plate (412), the top clamping assemblies (43) are engaged with the gear ring (4121), the upper end of the driving plate (412) and the upper end of the gear ring (4121) are both provided with through holes in communication with the lower end, and a key flower groove (4122) matched with the spraying assembly (53) is arranged on the inner surface of the through hole of the gear ring (4121).

5. The acid and alkali resistant corrosion prevention stainless steel screw surface treatment device according to claim 4, characterized in that: The top clamping assembly (43) comprises a gear wheel (431) rotatably installed on the bottom wall of the inner cavity of the driving plate (412) and engaged with the gear ring (4121), an installation ring (432) is rotatably installed on the lower end of the driving plate (412) and transmissionally connected with the lower end of the gear wheel (431), a containing groove (435) for containing the head of a screw is rotatably connected with the inner surface of the installation ring (432), and the inner surface of the containing groove (435) is the same in size and shape as the head of the screw.

6. The acid and alkali resistant corrosion preventing stainless steel screw surface treatment device according to claim 5, characterized in that: The inner surface of the accommodating groove (435) is annularly distributed with a plurality of sliding grooves (436), the inner wall of each of the plurality of sliding grooves (436) is slidably connected with an extrusion block (439), the inner wall of each of the plurality of sliding grooves (436) is slidably connected with a wedge-shaped block (437) abutting the extrusion block (439), the upper end of each of the wedge-shaped blocks (437) is fixedly connected with a spring rod (438), the center rod of each of the spring rods (438) extends through the inner cavity of the sliding groove (436) to the upper end of the accommodating groove (435) and abuts the lower end of the mounting ring (432), the mounting ring (432) is provided with an arc-shaped block (434) for jacking the spring rod (438), the side of the arc-shaped block (434) opposite to the rotation direction is fixedly connected with an L-shaped stop block (433) for limiting the stroke of the spring rod (438); when the accommodating groove (435) is rotated, the spring rod (438) slides at the lower end of the mounting ring (432) and is pressed downward under the action of the arc-shaped block (434) to press the extrusion block (439) to abut the head of the screw, and after the upper side of the spring rod (438) enters the recess of the L-shaped stop block (433), the head of the screw is locked.

7. The acid and alkali resistant corrosion-proof stainless steel screw surface treatment device according to claim 2, characterized in that: The bottom clamping assembly (44) comprises a base (441) mounted to the bottom wall of the inner cavity of the draining basket (41), the upper end of the base (441) is provided with a magnetic attraction ring, the upper end of the base (441) is annularly provided with a plurality of clamping arms (445), the upper end of the base (441) is rotatably connected with the plurality of clamping arms (445) through torsion springs, the lower end of each of the plurality of clamping arms (445) is fixedly connected with a push rod (444) located in the inner cavity of the base (441), a conical block (447) is fixedly connected in the middle of the inner cavity of the base (441) through a spring, the upper end of the base (441) is provided with a contact block (446) fixedly connected with the conical block (447) through a short rod, the bottom wall of the inner surface of the base (441) is fixedly connected with a center block (442), the inner side of the center block (442) is annularly provided with a plurality of spring push rods (443) abutting the inclined surface of the conical block (447), one side of each of the plurality of spring push rods (443) away from the conical block (447) is lapped with an adjacent push rod (444).

8. The acid and alkali resistant corrosion preventing stainless steel screw surface treatment device according to claim 1, characterized in that: The cleaning assembly (31) comprises a water pipe (311) rotatably installed on the bottom wall of the inner cavity of the processing tank (1) and communicated with the water pump in the cleaning storage tank (3), the outer surface of the water pipe (311) is fixedly connected with a plurality of annularly distributed inclined spray heads (312) on the part in the inner cavity of the processing tank (1), the upper part of the outer surface of the water pipe (311) is fixedly connected with a fixed disc (313), the outer surface of the fixed disc (313) is fixedly connected with a plurality of elastic rods (314) in an annular distribution, the side of the plurality of elastic rods (314) away from the outer wall of the fixed disc (313) is fixedly connected with impact balls (315) corresponding to the positions of the corresponding teeth (411), and the upper part of the outer surface of the water pipe (311) is annularly distributed and provided with a plurality of foam spray heads (316) with built-in foaming nets; when the cleaning storage tank (3) provides cleaning liquid into the water pipe (311), the cleaning liquid is sprayed out through the inclined spray heads (312) and drives the water pipe (311) to rotate, synchronously drives the fixed disc (313) to rotate, and makes the impact balls (315) collide with the teeth (411).

9. The acid and alkali resistant corrosion preventing stainless steel screw surface treatment device according to claim 3, characterized in that: The spraying assembly (53) comprises a connecting pipe (532) rotatably installed on the top wall of the inner cavity of the processing tank (1), the outer surface of the connecting pipe (532) is fixedly connected with a spline (531) matched with the key groove (4122), the connecting pipe (532) is drivingly connected with the motor in the inner side of the driving cabinet (51) through a shaft coupling, four groups of notches are formed in the outer wall of the connecting pipe (532), and the inner walls of the notches are slidingly connected with sliding rods (535), four groups of the notches are arrayed and distributed, and the coating spray heads (536) communicated with the storage tank in the inner side of the driving cabinet (51) through a guide pipe are rotatably connected to the inner sides of the notches, a plurality of buffer grooves (537) are arrayed and distributed on the surfaces of the sliding rods (535) and slidingly connected with adjacent coating spray heads (536), a plurality of spring discs (538) are fixedly connected to the lower ends of the sliding rods (535) and slidingly connected with the inner wall of the connecting pipe (532), a plurality of intermittent discs (534) are provided at the upper ends of the sliding rods (535) and slidingly connected with the inner wall of the connecting pipe (532), the upper end of the driving disc of the intermittent disc (534) is fixedly connected with a driving rod (533) drivingly connected with the motor in the inner side of the driving cabinet (51), and the lower part of the outer surface of the connecting pipe (532) is provided with a drying pipe (539) communicated with the drying fan in the inner side of the driving cabinet (51).

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