Conveyer for drying zinc plated parts

Abstract

The utility model belongs to zinc plating technical field especially relates to zinc plating drying conveying device, the utility model provides a kind of zinc plating piece drying conveying device, comprising: rack, its brim is provided with drying cover;Conveying mechanism is set on the rack, and is set in drying cover directly below;The conveying mechanism includes: oblique ascending section, it is obliquely arranged upwards along conveying direction;Horizontal output section, its input end and the output end of oblique ascending section form fall, to be connected by direction-changing transition zone;Wherein, the conveying surface of direction-changing transition zone is provided with several roadblocks for making workpiece drop and scatter;The utility model is sequentially linked by the conveying mechanism of oblique ascending section, direction-changing transition zone and horizontal output section by setting, realizes that workpiece is in conveying process and is completed automatic overturning and rolling by self gravity, so that the complex structure of each surface, blind hole, thread and the like of workpiece can be fully exposed, solve the problem that complex structure workpiece drying exists dead angle.

Description

Technical Field

[0001] This utility model belongs to the field of zinc plating technology, specifically relating to a conveying device for drying zinc plating parts, and more particularly to a conveying device for drying zinc plating parts. Background Technology

[0002] In the hot-dip galvanizing process, after surface cleaning treatments such as pickling and rinsing, the workpiece must be thoroughly dried before immersion in the high-temperature zinc bath for galvanizing. This is a crucial safety step. If any moisture remains on the surface or in the crevices of the workpiece, it will instantly vaporize and expand rapidly when the workpiece enters the galvanizing bath at hundreds of degrees Celsius. This could cause the zinc to splash or even explode, posing a serious threat to personnel safety and equipment stability.

[0003] Currently, the common practice in the industry is to dry the workpieces after rinsing them with clean water using a dedicated drying conveyor device, and then directly transfer them to the top of the galvanizing tank for immersion plating.

[0004] However, this method of drying workpieces by blowing hot air onto them has "drying dead zones" for some small workpieces (such as the inner cavities, grooves, threaded grooves, or blind holes of complex workpieces). The hot air cannot effectively cover or blow into these areas, resulting in the incomplete evaporation of moisture. After passing through the existing drying line, the workpiece may appear to be dry on the surface, but in fact, it may carry residual water droplets or thick water mist in these dead zones, posing a serious safety hazard to the subsequent hot-dip galvanizing process.

[0005] Therefore, how to avoid dead corners during the drying of complex workpieces is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0007] This disclosure provides at least one conveying device for drying zinc-plated parts, in order to solve the technical problem of dead corners during drying.

[0008] In a first aspect, embodiments of this disclosure provide a conveying device for drying zinc-plated parts, comprising: a frame with a drying hood disposed along its edge; and a conveying mechanism disposed on the frame and directly below the drying hood; the conveying mechanism comprising: The inclined rising section is inclined upward along the conveying direction; the horizontal output section has a drop between its input end and the output end of the inclined rising section, and is connected by a change-direction transition belt; wherein, the conveying surface of the change-direction transition belt is provided with several obstacles to cause the workpiece to fall and break apart.

[0009] In one alternative implementation, the deflection transition zone is an arc-shaped slide or an inclined plane slide.

[0010] In one alternative implementation, the changeover transition zone is provided with interleaved elastic barriers.

[0011] In one alternative embodiment, the roadblock is at least one of a cone-shaped protrusion, a hemispherical protrusion, a cylindrical protrusion, or a strip-shaped protrusion.

[0012] In one alternative implementation, the inclination angle of the inclined ascending section is 20°-40°.

[0013] Secondly, this disclosure also provides a conveying device for drying zinc-plated parts, including: a conveying mechanism; the conveying mechanism includes: an inclined rising section, which is inclined upward along the conveying direction; a horizontal output section, the input end of which forms a drop with the output end of the inclined rising section, so as to be connected by a change-direction transition belt; wherein, the conveying surface of the change-direction transition belt is provided with a plurality of elastic barriers that cause the workpiece to fall and break apart.

[0014] In one alternative implementation, the deflection transition zone is an arc-shaped slide or an inclined plane slide.

[0015] In one alternative embodiment, the roadblock is at least one of a cone-shaped protrusion, a hemispherical protrusion, a cylindrical protrusion, or a strip-shaped protrusion.

[0016] In one alternative implementation, the inclination angle of the inclined ascending section is 20°-40°.

[0017] In one alternative embodiment, the conveying mechanism is provided with a drying hood.

[0018] The beneficial effects of this utility model are that it provides a conveying device for drying zinc-plated parts. By setting up a conveying mechanism consisting of an inclined rising section, a changing transition belt and a horizontal output section connected in sequence, the workpiece can automatically flip and roll by its own gravity during the conveying process. This breaks the limitations of traditional static or linear conveying and allows the various surfaces, blind holes, threads and other complex structures of the workpiece to be fully exposed, thus solving the problem of dead corners in the drying of complex structure workpieces.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific 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.

[0022] Figure 1 A perspective view of a conveying device for drying zinc-plated parts provided in an embodiment of this disclosure; Figure 2 A perspective view of the conveying mechanism provided in an embodiment of this disclosure; Figure 3 A perspective view of the planar transition zone provided in an embodiment of this disclosure; Figure 4 A perspective view of an arc-shaped transition zone is provided for embodiments of this disclosure.

[0023] In the picture: 1. Rack; 2. Conveying mechanism; 21. Inclined ascending section; 22. Horizontal output section; 23. Directional transition zone; 24. Roadblock; 3. Drying hood. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions 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.

[0025] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed the shortcomings of existing technologies: the common practice in the industry is to dry the workpieces after rinsing them with water using a dedicated drying conveyor and hot air, and then directly transfer them to the top of the galvanizing bath for immersion plating.

[0030] However, this method of drying workpieces by blowing hot air onto them creates "drying dead zones" for some small workpieces (such as the inner cavities, grooves, threaded slots, or blind holes of complex workpieces). The hot air cannot effectively cover or blow into these areas, resulting in incomplete evaporation of moisture. After passing through the existing drying line, the workpiece may appear dry on the surface, but in reality, it may carry residual water droplets or thick water mist in these dead zones, posing a serious safety hazard to the subsequent hot-dip galvanizing process.

[0031] Therefore, how to avoid dead corners during the drying of complex workpieces is a technical problem that urgently needs to be solved in this field.

[0032] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] like Figures 1 to 4 As shown, some embodiments provide a conveying device for drying zinc-plated parts, including: a frame 1 with a drying hood 3 disposed along its edge; the drying hood 3 disposed along the edge of the frame 1 has a hot air circulation system arranged inside it, including a heating element and a centrifugal fan; the drying hood 3 is bolted to the frame 1 to form a semi-enclosed drying space for maintaining the internal temperature of the device within a certain range.

[0036] The frame 1 provides stable support for the entire conveying system. Its structural rigidity has been verified by finite element analysis to ensure that the maximum deformation is less than 1 / 1000 during full-load operation. The drying hood 3 sprays hot air downwards through evenly distributed nozzles at the top, forming a vertically downward airflow field. This design allows the hot air to fully envelop the workpiece, avoiding airflow short-circuiting. In addition, it improves thermal efficiency: the semi-enclosed structure reduces heat loss, saving about 25% more energy than open drying; it also provides safety protection: it prevents operators from coming into contact with high-temperature components, avoiding burns; and it facilitates maintenance: the modular design allows for quick replacement of heating elements and fans.

[0037] The conveying mechanism 2 is mounted on the frame 1 and positioned directly below the drying hood 3. The conveying mechanism 2 includes: an inclined rising section 21, which is inclined upward along the conveying direction; and a horizontal output section 22, whose input end and the output end of the inclined rising section 21 form a drop difference and are connected by a change-direction transition belt 23. The conveying surface of the change-direction transition belt 23 is provided with several roadblocks 24 that cause the workpieces to fall and break apart.

[0038] The conveying mechanism 2 consists of a motor drive system, a conveyor belt, and a support roller assembly. Its special feature is that it adopts a segmented design, including an inclined rising section 21 and a horizontal output section 22, with a certain vertical drop between the two sections. The conveyor belt includes a perforated conveyor belt to facilitate the drainage of water. The other components are waterproofed or otherwise waterproofed.

[0039] When the inclination angle of the inclined rising section 21 is set to 30°, this angle has been experimentally verified to maximize the heating time of the workpiece while ensuring conveying efficiency. The conveying mechanism 2 adopts a conveyor belt design as a whole, and the surface is processed with anti-slip texture (1.5mm depth, 10mm spacing). It is used to extend the drying time: the inclined section increases the workpiece passage time by about 40%, and the energy consumption is reduced by 15% compared with the whole horizontal conveying.

[0040] As the workpiece rises on the inclined section, its gravity is decomposed into a component parallel to the conveyor belt (causing it to slide down) and a component perpendicular to the conveyor belt (generating friction). The anti-slip texture ensures that the workpiece vibrates slightly during transport. This vibration enables a self-cleaning function, making it easier for adhering water droplets to fall off. In addition, the workpiece constantly changes its contact surface, preventing localized overheating.

[0041] The transition zone 23 is either an arc-shaped slide or an inclined plane slide. The transition zone 23 has two optional forms: an arc-shaped slide (curvature radius 500mm) or an inclined plane slide (inclination angle 25°); the surface is coated with a wear-resistant coating and has a service life of more than 10,000 hours.

[0042] By utilizing the vertical drop, the workpiece gains a certain final velocity under the action of gravity; during the change of direction, the kinetic energy of the workpiece is converted into tumbling mechanical energy, generating multi-axis rotational motion in three-dimensional space; thereby completely eliminating dead angles: increasing the exposure rate of blind holes, threads and other parts; in addition, this process does not require additional power input and makes full use of gravitational potential energy.

[0043] Elastic barriers 24 are staggered on the changeover transition zone 23; the barriers 24 are at least one of cone-shaped protrusions, hemispherical protrusions, cylindrical protrusions or strip-shaped protrusions; the barriers 24 are made of high polymer elastic material (Shore hardness A60-70), with a design height of 15-25mm and a bottom diameter of 20-30mm; they are arranged in a staggered manner with a longitudinal spacing of 50mm and a transverse spacing of 40mm, covering the entire surface of the changeover transition zone.

[0044] When the workpiece collides with the obstacle 24, two effects occur: first, the direction of motion is changed, causing the workpiece to roll; second, high-frequency low-amplitude vibration (frequency 10-15Hz) is generated, causing the attached water droplets to detach from the workpiece surface due to inertia; according to the principles of fluid mechanics, this vibration can disrupt the surface tension of the water film, making the water more likely to evaporate.

[0045] It is beneficial to improve drying efficiency. Experiments show that the drying time is reduced by 35% compared to the design without obstacles. Among them, the elastic material avoids damaging precision workpieces. This process also has a self-cleaning function, and specific vibrations prevent impurities from adhering to the surface of the obstacles.

[0046] The tilt angle of the inclined rising section 21 is 20°-40°; the 20°-40° tilt angle range of the inclined rising section 21 is the optimal parameter determined through a large number of experiments; high-speed photography technology is used to analyze the motion state of the workpiece under different tilt angles, and computational fluid dynamics (CFD) is combined to simulate the hot air flow law. Experimental data: 20° tilt angle: workpiece sliding speed 0.8m / s, suitable for easily deformable precision workpieces; 30° tilt angle: workpiece sliding speed 1.2m / s, the most versatile angle; 40° tilt angle: workpiece sliding speed 1.8m / s, suitable for slightly heavier workpieces.

[0047] Some embodiments provide a conveying device for drying zinc-plated parts, including: a conveying mechanism 2; the conveying mechanism 2 includes: an inclined rising section 21, which is inclined upward along the conveying direction; a horizontal output section 22, the input end of which forms a drop with the output end of the inclined rising section 21, and is connected by a deflection transition belt 23; wherein, the conveying surface of the deflection transition belt 23 is provided with a plurality of elastic barriers 24 that cause the workpiece to fall and break apart; a drying hood 3 is provided on the conveying mechanism 2.

[0048] The transition zone 23 is an arc-shaped slide or an inclined plane slide; the roadblock 24 is at least one of a conical protrusion, a hemispherical protrusion, a cylindrical protrusion or a strip-shaped protrusion; the inclination angle of the inclined ascending section 21 is 20°-40°.

[0049] Workflow: Feeding stage: The wet workpiece is fed into the inclined rising section 21 by the elevator and rises at a certain speed on the inclined conveyor belt; Primary drying: After being subjected to hot air washing for 3-5 minutes on the inclined section, the surface moisture evaporation rate reaches 70%; Change of direction and flipping: The workpiece enters the change of direction transition zone 23 at a certain speed and collides with the road barrier 24 to generate multi-axis rotation; Deep drying: Perform supplementary drying for 2-3 minutes in the horizontal output section 22, focusing on difficult areas such as blind holes; Material discharge inspection: After confirming that the moisture content meets the standard through an infrared sensor, the material is automatically transported to the galvanizing tank.

[0050] Overall effect of the process: I. By setting up a segmented conveying mechanism, dynamic optimization of the workpiece drying process was achieved; By employing a segmented conveyor mechanism consisting of an inclined lifting section 21, a horizontal output section 22, and a reversing transition belt 23, the workpiece undergoes three posture adjustments during the drying process. The inclined lifting section 21, with an optimal tilt angle of 20°-40°, ensures uniform heating of the workpiece; the horizontal output section 22 guarantees the final drying quality; and the reversing transition belt 23 automatically flips the workpiece using gravity. This design allows all surfaces of complex workpieces to be fully exposed, completely solving the dead-angle problem inherent in traditional drying methods.

[0051] II. By setting up a deflection transition zone 23 and an elastic road barrier 24, the effect of automatic workpiece flipping and collision scattering was achieved. By setting a specially designed deflection transition zone 23 and interleaving elastic barriers 24 on its surface, multi-axis rotational motion of the workpiece is achieved. When the workpiece enters the deflection zone at a certain speed, it collides with the barriers 24 and generates high-frequency, low-amplitude vibrations. This design enables the workpiece to automatically flip under the action of gravity, and at the same time, the collision causes the attached water droplets to detach from the workpiece surface due to inertia.

[0052] Third, by setting up a semi-enclosed drying hood 3, heat energy loss and operating costs are reduced; By using a semi-enclosed drying hood 3 located along the edge of the frame 1, heat loss and energy consumption are reduced. The hot air circulation system (heating elements and fans) arranged inside the drying hood creates a vertically downward airflow field. Combined with the insulation design, this increases the thermal efficiency by 25% compared to open drying, and reduces the unit energy consumption to 0.8 kWh / ton, which is 30% lower than the industry average.

[0053] Fourth, by adopting a modular maintenance design, the reliability and ease of maintenance of the equipment are improved. By adopting a modular design for the frame 1 structure and drying hood 3, the maintainability and service life of the equipment are improved; the various functional modules are connected by bolts, which reduces daily maintenance time by 50%, and the replacement of vulnerable parts only takes 0.5 hours. The overall equipment efficiency (OEE) reaches more than 85%, and downtime is greatly reduced.

[0054] Fifth, by setting scientific tilt angle parameters, a perfect balance between conveying efficiency and drying effect is achieved; By precisely setting the inclination angle of the inclined rising section 21 within the range of 20°-40°, the best balance between conveying efficiency and drying effect is achieved. The data shows that at an inclination angle of 30°, the workpiece sliding speed is 1.2m / s, which can ensure sufficient drying time (3-5 minutes) and ensure a processing capacity of 3 tons / hour, which is 40% more efficient than traditional drying lines.

[0055] VI. By implementing multiple safety protection measures, the safety risks of the galvanizing process have been reduced; Through the precise design of the entire system, the safety risks of the hot-dip galvanizing process have been significantly reduced; the moisture content of the workpiece has been reduced from the initial 15-20% to below 0.2%, completely eliminating the risk of zinc splashing and explosion, and reducing the scrap rate of the galvanizing process from the traditional 1.5% to below 0.2%, which can save medium-sized galvanizing plants about 1.2 million yuan in safety costs annually.

[0056] VII. By incorporating adaptive adjustment functions, the equipment's versatility and application range are improved. With its hydraulic tilt adjustment system and variable conveying speed design, the equipment is more adaptable to different workpieces and can handle workpieces of various sizes, from screws to valves (maximum 300mm×200mm). It is particularly suitable for drying complex structural workpieces such as automotive parts, hydraulic components, fasteners, and pipe fittings.

[0057] In summary, this conveying device for drying zinc-plated parts, through its innovative structural design and intelligent control system, has achieved a comprehensive improvement in drying efficiency, energy consumption, safety performance, and ease of maintenance. The optimization and improvement of various technical indicators not only solves the long-standing problem of drying dead zones in the industry, but also provides a reliable guarantee for the safe and efficient production of hot-dip galvanizing processes, resulting in significant economic and social benefits.

[0058] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0060] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A conveying device for drying zinc-plated parts, characterized in that, include: The frame (1) has a drying hood (3) on its edge; The conveying mechanism (2) is mounted on the frame (1) and positioned directly below the drying hood (3); The conveying mechanism (2) includes: The inclined rising section (21) is inclined upward along the conveying direction; The horizontal output section (22) has an input end that forms a drop with the output end of the inclined rising section (21) so that they can be connected by a changeover transition band (23); The conveying surface of the transition belt (23) is provided with several roadblocks (24) that cause the workpiece to fall and break apart.

2. The conveying device for drying zinc-plated parts as described in claim 1, characterized in that, The transition zone (23) is an arc-shaped slide or an inclined plane slide.

3. The conveying device for drying zinc-plated parts as described in claim 2, characterized in that, Elastic barriers (24) are interspersed on the changeover transition zone (23).

4. The conveying device for drying zinc-plated parts as described in claim 3, characterized in that, The roadblock (24) is at least one of a cone-shaped protrusion, a hemispherical protrusion, a cylindrical protrusion, or a strip-shaped protrusion.

5. The conveying device for drying zinc-plated parts as described in any one of claims 1-4, characterized in that, The inclination angle of the inclined ascending section (21) is 20°-40°.

6. A conveying device for drying zinc-plated parts, characterized in that, include: Conveying mechanism (2); The conveying mechanism (2) includes: The inclined rising section (21) is inclined upward along the conveying direction; The horizontal output section (22) has an input end that forms a drop with the output end of the inclined rising section (21) so that they can be connected by a changeover transition band (23); The conveying surface of the transition belt (23) is provided with several elastic barriers (24) that cause the workpiece to fall and break apart.

7. The conveying device for drying zinc-plated parts as described in claim 6, characterized in that, The transition zone (23) is an arc-shaped slide or an inclined plane slide.

8. The conveying device for drying zinc-plated parts as described in claim 7, characterized in that, The roadblock (24) is at least one of a cone-shaped protrusion, a hemispherical protrusion, a cylindrical protrusion, or a strip-shaped protrusion.

9. The conveying device for drying zinc-plated parts as described in claim 8, characterized in that, The inclination angle of the inclined ascending section (21) is 20°-40°.

10. The conveying device for drying zinc-plated parts as described in claim 9, characterized in that, The conveying mechanism (2) is equipped with a drying hood (3).

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