A metal blackening device for uniform distribution of a rust-proof coating

Abstract

The utility model relates to a metal blackening treatment device of even distribution of antirust coating belongs to metal antirust coating technical field, the metal blackening treatment device of even distribution of antirust coating, include: blackening box, motor, rotating roller, stirring subassembly and transmission system, and one end fixed connection of motor's output with one rotating roller, blackening box adopts corrosion -resistant stainless steel material, and the inside is equipped with annular rotating roller support and overturns circular metal piece, and the design of compound stirring paddle and deflector of cooperation stirring subassembly promotes the circulation of liquid medicine to improve the reaction efficiency. Through transmission system drive rotating roller and stirring subassembly synchronous rotation, realize metal piece dynamic processing. The device combines mechanical overturning and fluid dynamics optimization, ensure that the oxide film is evenly deposited, cooperate with the intelligent temperature control system to ensure the compactness of the film layer, and the waste liquid circulation system prolongs the service life of the liquid medicine and reduces the processing cost, the whole has efficient, energy -conserving characteristics, be applicable to high -precision metal parts blackening treatment.

Description

Technical Field

[0001] This utility model relates to the field of metal anti-rust coating technology, and in particular to a metal blackening treatment device with uniform distribution of anti-rust coating. Background Technology

[0002] Blackening is a common chemical surface treatment method. Its principle is to use a chemical reaction to generate a dense oxide film on the metal surface, isolating it from corrosive media such as air and moisture, thereby achieving rust prevention and improving corrosion resistance. This process is mainly achieved through alkaline blackening, room temperature blackening, electrochemical blackening, or high-temperature oxidation. Alkaline blackening requires a specific temperature to form a film mainly composed of iron(III) oxide (Fe3O4); room temperature blackening is suitable for heat-sensitive metals; electrochemical blackening can impart higher uniformity to the film; and high-temperature oxidation can generate a thicker, more wear-resistant film. Blackening treatment is widely used in machinery manufacturing, automotive industry, building decoration, medical devices, and consumer electronics, offering advantages such as low cost and good dimensional stability.

[0003] In existing metal blackening processes, the metal is immersed in a blackening agent, and the metal parts fall to the bottom of the chamber. The bottom of the metal parts contacts the bottom of the chamber, which affects the reaction between the contact point and the blackening agent. This results in an uneven blackening reaction of the metal parts and affects the blackening effect. Utility Model Content

[0004] Therefore, it is necessary to provide a metal blackening treatment device that provides a uniform distribution of anti-rust coating to address the problem that when metal parts fall to the bottom of the box, the bottom of the metal parts comes into contact with the bottom of the box, affecting the reaction between the contact point and the blackening agent, resulting in uneven blackening reaction of the metal parts and affecting the effect of blackening treatment.

[0005] A metal blackening treatment device for uniformly distributing anti-rust coating includes: a blackening box, two rotating rollers are movably connected inside the blackening box, a stirring assembly is movably connected below the rotating rollers, and a transmission system is provided at one end of the two rotating rollers and one side of the stirring assembly.

[0006] An electric motor is fixed to the outer wall of the blackening box, and the output end of the motor is fixedly connected to one end of one of the rotating rollers.

[0007] In one embodiment, a heating tube is fixedly connected to the inner wall of the blackening box, and the heating tube surrounds both sides of the two rotating rollers.

[0008] In one embodiment, protective plates are fixedly connected to the inner walls of both sides of the blackening box, and the two protective plates respectively cover the surface of the heating tube.

[0009] In one embodiment, friction strips are fixedly connected to the surfaces of both rollers in an annular shape, and guide grooves are formed on the surfaces of both rollers and the plurality of friction strips.

[0010] In one embodiment, the stirring assembly includes a rotating rod that is movably inserted into the inner wall of the blackening box. The surface of the rotating rod is movably fitted with a plurality of collars, and the surfaces of the plurality of collars are equidistantly connected with a plurality of stirring blades.

[0011] In one embodiment, a limiting block is fixedly connected to one side of each of the plurality of collars, and one side of the limiting block is movably engaged with the outer wall of the rotating rod.

[0012] In one embodiment, sealing rings are fitted on both sides of the rotating rod and the two rotating rollers, and multiple sealing rings are respectively fixed on the inner walls of both sides of the blackening box.

[0013] Beneficial effects

[0014] 1. The blackening chamber is made of corrosion-resistant stainless steel and features an internal rotatable annular roller to support and rotate circular metal parts, increasing their contact area with the chemical solution. The stirring assembly, with its composite stirring paddle and guide plate design, promotes chemical solution circulation and improves reaction efficiency. The transmission system consists of drive wheels mounted on two rollers and the stirring assembly. Multiple drive wheels are fitted with the transmission system itself, with an angle greater than 120° between the internal contact surface of the transmission system and each drive wheel. The motor drives the rollers and stirring assembly to rotate synchronously via the transmission system, achieving dynamic processing of the metal parts. This device, through mechanical rotation and optimized fluid dynamics, ensures uniform oxide film deposition. Combined with an intelligent temperature control system, it guarantees the density of the oxide film. Simultaneously, the waste liquid circulation system extends the service life of the chemical solution and reduces processing costs. Overall, this device is highly efficient and energy-saving, suitable for blackening high-precision metal parts.

[0015] 2. Friction strips are fixedly connected to the surfaces of both rollers in annular shape. Tungsten carbide particles are deposited on the stainless steel substrate using laser cladding technology, which improves the surface roughness and provides sufficient friction to prevent metal parts from sliding and to minimize scratches on the workpiece surface. The stirring blades welded to the surface of the collar adopt a biomimetic shark fin design, and their angle of attack can be automatically adjusted according to the viscosity of the liquid. Turbulence can be generated at low speeds to enhance mass transfer efficiency. Limiting blocks are fixedly connected to one side of each of the collars. Their wedge-shaped structure forms a precise engagement with the groove on the outer wall of the rotating rod to minimize axial movement of the stirring assembly. Sealing rings are fitted on both sides of the rotating rod and the two rollers. They adopt a fluororubber double-lip structure and work in conjunction with the labyrinth sealing groove on the inner wall of the blackened box to effectively prevent the liquid from seeping into the bearing cavity, thus extending the service life of the transmission system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the two rotating rollers structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the heating structure of the blackening box of this utility model;

[0020] Figure 4 This is a schematic diagram of the stirring assembly structure of this utility model.

[0021] Figure label:

[0022] 100. Blackening box; 101. Heating tube; 102. Protective plate; 200. Rotating roller; 201. Guide groove; 202. Friction strip; 300. Motor; 400. Stirring assembly; 401. Rotating rod; 402. Collar; 403. Limiting block; 404. Stirring blade; 500. Transmission system; 600. Sealing ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] The following is combined with Figures 1-4 This invention describes a metal blackening treatment device with a uniformly distributed anti-rust coating.

[0029] In one embodiment, a metal blackening treatment device for uniformly distributing anti-rust coating includes: a blackening box 100 and a motor 300. Two rotating rollers 200 are movably connected inside the blackening box 100, and a stirring assembly 400 is movably connected below the rotating rollers 200. A transmission system 500 is provided at one end of each of the two rotating rollers 200 and one side of the stirring assembly 400. The motor 300 is fixed on the outer wall of the blackening box 100, and the output end of the motor 300 is fixedly connected to one end of one of the rotating rollers 200.

[0030] In this embodiment, the blackening box 100 is made of corrosion-resistant stainless steel and has a rotatable annular roller 200 inside to support and flip the circular metal parts, increasing their contact area with the liquid medicine. The stirring assembly 400 promotes the circulation of the liquid medicine and improves the reaction efficiency through the design of a composite stirring paddle and a guide plate.

[0031] The transmission system 500 consists of drive wheels mounted on two rotating rollers 200 and a stirring assembly 400. The transmission system 500 is fitted onto the surface of multiple drive wheels, with the contact angle between the internal parts of the transmission system 500 and each drive wheel greater than 120°. The motor 300 drives the rotating rollers 200 and the stirring assembly 400 to rotate synchronously via the transmission system 500, achieving dynamic processing of metal parts. This device ensures uniform oxide film deposition through mechanical tumbling and fluid dynamics optimization. Combined with an intelligent temperature control system, it guarantees the density of the oxide film. Simultaneously, the waste liquid recycling system extends the service life of the chemical solution and reduces processing costs. Overall, this device is highly efficient and energy-saving, suitable for the blackening treatment of high-precision metal parts.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, a heating tube 101 is fixedly connected to the inner wall of the blackening box 100. The heating tube 101 surrounds both sides of the two rotating rollers 200. Protective plates 102 are fixedly connected to the inner walls of both sides of the blackening box 100. The two protective plates 102 cover the surface of the heating tube 101 respectively.

[0033] In this embodiment, a heating tube 101 is fixedly connected to the inner wall of the blackening box 100. The heating tube 101 is U-shaped and surrounds both sides of the two rotating rollers 200 to form a three-dimensional heating structure, ensuring the uniformity of the liquid temperature. The heating tube 101 adopts PTC ceramic constant temperature heating technology and is used in conjunction with a thermocouple temperature controller to achieve precise temperature control of 100-145℃, avoiding film defects caused by local overheating.

[0034] The protective plate 102 is a stamped 316L stainless steel mesh plate with a polyimide corrosion-resistant coating sprayed on the surface. Its mesh aperture is 2mm, which can prevent metal parts from directly contacting the heating tube 101, while allowing the liquid medicine to pass through freely to form convection. While ensuring safety protection, it can improve the oxide film deposition rate.

[0035] like Figure 1 , Figure 2 and Figure 4 As shown, friction strips 202 are fixedly connected to the surfaces of the two rotating rollers 200 in an annular manner. Guide grooves 201 are opened on the surfaces of the two rotating rollers 200 and the multiple friction strips 202. The stirring assembly 400 includes a rotating rod 401 that is movably inserted into the inner wall of the blackening box 100. Multiple collars 402 are movably sleeved on the surface of the rotating rod 401. Multiple stirring blades 404 are fixedly connected to the surfaces of the multiple collars 402 in an annular manner at equal intervals.

[0036] Both rollers 200 have friction strips 202 fixedly connected to their surfaces in annular shape. Tungsten carbide particles are deposited on a 304 stainless steel substrate using laser cladding technology, which improves the surface roughness. This provides sufficient friction to prevent metal parts from sliding and minimizes scratches on the workpiece surface. The stirring blades 404 welded to the surface of the collar 402 adopt a biomimetic shark fin design. Their angle of attack can be automatically adjusted according to the viscosity of the liquid. Turbulence can be generated at low speeds to enhance mass transfer efficiency.

[0037] like Figure 1 , Figure 2 and Figure 4 As shown, a limiting block 403 is fixedly connected to one side of each of the multiple collars 402. One side of the limiting block 403 is movably engaged with the outer wall of the rotating rod 401. Sealing rings 600 are fitted on both sides of the rotating rod 401 and the two rotating rollers 200. Multiple sealing rings 600 are fixed on the inner walls of both sides of the blackening box 100.

[0038] In this embodiment, a limiting block 403 is fixedly connected to one side of each of the multiple collars 402. The wedge-shaped structure of the limiting block 403 forms a precise engagement with the groove on the outer wall of the rotating rod 401, so as to avoid axial movement of the stirring assembly 400 as much as possible. Sealing rings 600 are fitted on both sides of the rotating rod 401 and the two rotating rollers 200. The sealing rings 600 adopt a fluororubber double lip structure and work with the labyrinth sealing groove on the inner wall of the blackening box 100 to effectively prevent the liquid medicine from seeping into the bearing cavity, thereby extending the service life of the transmission system 500.

[0039] Working principle:

[0040] The motor 300 drives the rotating roller 200 to rotate, causing the metal parts to continuously flip in the liquid medicine. The surface friction strip 202 provides gripping force to prevent slippage. The guide groove 201 guides the liquid medicine to form a directional flow. The rotating rod 401 of the stirring assembly 400 drives the stirring blade 404 to rotate through the collar 402. The biomimetic shark fin design allows the angle of attack of the stirring blade 404 to be automatically adjusted, generating turbulence at low speed and promoting the renewal of the liquid medicine.

[0041] Heating tube 101 maintains the reaction temperature using PTC ceramic constant temperature technology. Protective plate 102 prevents metal parts from directly contacting the heating element while allowing liquid convection. Limiting block 403 and rotating rod 401 engage in a slot to prevent axial displacement of stirring assembly 400. Sealing ring 600 adopts a double-lip structure with a labyrinth sealing groove to effectively prevent liquid from seeping into the bearing cavity. The large contact surface angle transmission system 500 enables synchronous operation of rotating roller 200 and stirring assembly 400. The synergistic action of each component ensures uniform deposition of oxide film on the metal surface. Combined with intelligent temperature control and waste liquid circulation system, the processing efficiency is improved while ensuring the density of the film layer.

[0042] It should be noted that the heating element 101 and motor 300 mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the heating element 101 and motor 300 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A metal blackening treatment device with uniformly distributed anti-rust coating, characterized in that, include: A blackening box (100) has two rotating rollers (200) movably connected inside. A stirring assembly (400) is movably connected below the rotating rollers (200). A transmission system (500) is provided at one end of the two rotating rollers (200) and on one side of the stirring assembly (400). A motor (300) is fixed to the outer wall of the blackening box (100), and the output end of the motor (300) is fixedly connected to one end of one of the rollers (200).

2. The metal blackening treatment device for uniformly distributing rust-preventive coating according to claim 1, characterized in that, A heating tube (101) is fixedly connected to the inner wall of the blackening box (100), and the heating tube (101) surrounds both sides of the two rotating rollers (200).

3. The metal blackening treatment device for uniformly distributing rust-preventive coating according to claim 2, characterized in that, The inner walls of both sides of the blackening box (100) are fixedly connected with protective plates (102), and the two protective plates (102) respectively cover the surface of the heating tube (101).

4. The metal blackening treatment device for uniformly distributing rust-preventive coating according to claim 1, characterized in that, The surfaces of the two rollers (200) are fixedly connected with friction strips (202) in an annular shape, and the surfaces of the two rollers (200) and the multiple friction strips (202) are provided with guide grooves (201).

5. The metal blackening treatment device for uniformly distributing rust-preventive coating according to claim 1, characterized in that, The stirring assembly (400) includes a rotating rod (401) that is movably inserted into the inner wall of the blackening box (100). Multiple collars (402) are movably sleeved on the surface of the rotating rod (401), and multiple stirring blades (404) are fixedly connected to the surface of the multiple collars (402) at equal intervals in a ring.

6. The metal blackening treatment device for uniformly distributing rust-preventive coating according to claim 5, characterized in that, Each of the multiple collars (402) is fixedly connected to a limiting block (403) on one side, and one side of the limiting block (403) is movably engaged with the outer wall of the rotating rod (401).

7. The metal blackening treatment device for uniformly distributing rust-preventive coating according to claim 5, characterized in that, Sealing rings (600) are fitted on both sides of the rotating rod (401) and the two rotating rollers (200), and multiple sealing rings (600) are fixed on the inner walls of both sides of the blackening box (100).

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