Zinc dross screening device
By designing a multi-layer screen structure and dust collection system for the zinc dross screening device, the safety hazards and environmental pollution problems in the zinc dross screening process were solved, achieving a clean screening effect with no dust leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN CHIHONG ZN & GE CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-04-24
AI Technical Summary
The current zinc dross screening process poses safety hazards, and the zinc dross contains toxic and flammable substances, making conventional screening equipment unsuitable and easily causing environmental pollution and health threats.
A zinc slag screening device was designed, which adopts a multi-layer screen structure with a dust cover and a side dust suction cover, combined with belt drive and roller slide, to achieve multiple screening of materials and effective collection of dust, thus avoiding dust leakage.
This achieves zero dust leakage during the screening process, reduces safety hazards, ensures a clean and healthy working environment, and reduces the risk of environmental pollution.
Smart Images
Figure CN224157282U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of screening equipment technology, and in particular to a zinc slag screening device. Background Technology
[0002] In the hot-dip galvanizing process, when an iron workpiece is immersed in molten zinc, a zinc-α-iron (body-centered) solid solution forms at the interface. To avoid high-temperature deformation of the workpiece and reduce zinc dross caused by iron loss, manufacturers typically use a temperature of 450-470℃. Zinc dross is generated during this process and usually floats on the surface of the molten zinc. Zinc dross is mainly produced during the immersion of the workpiece in the zinc bath and is usually skimmed off manually. The composition of zinc dross is complex, mainly containing Zn and ZnO, and may also contain impurities such as SiO2, Fe²⁺, Cd²⁺, and Mn²⁺. Furthermore, ammonium chloride and zinc chloride are commonly used as fluxing agents during galvanizing, and during the collection of zinc dross, zinc chloride, zinc oxide, and particulate zinc are inevitably carried along, forming a mixture.
[0003] Because zinc chloride, used in the galvanizing process, is corrosive and highly toxic, zinc dross is generally considered to possess toxic and hazardous characteristics. Furthermore, the zinc powder contained in zinc dross is flammable when in contact with water, and the high temperatures during zinc ash processing and separation lead to spontaneous combustion during reprocessing, posing a significant danger. Moreover, the zinc particles after zinc dross sorting can easily exceed lead and cadmium limits during smelting, causing secondary pollution and increasing environmental risk control costs. Therefore, some solid waste disposal company personnel believe that zinc dross should be classified as hazardous waste. Consequently, during the screening process of zinc dross, it should be treated as hazardous material; conventional screening equipment is unsuitable and could easily create safety hazards. Utility Model Content
[0004] To address or partially address the problems existing in related technologies, this application provides a zinc slag screening device that can reduce safety hazards during the screening process.
[0005] This application discloses a zinc slag screening device, comprising:
[0006] A bracket with a slide rail is mounted on it. A motor and a shaft seat are connected to the bracket. A pulley and a drive wheel are connected to the shaft seat via a shaft. The drive wheel has a connecting shaft on its surface. The motor is connected to the pulley via belt drive.
[0007] Screening mechanism; the screening mechanism includes a receiving hopper, a first screen, a second screen, a side dust suction hood, and an upper dust cover; rollers are connected to the bottom of the receiving hopper, the first screen is connected to the receiving hopper, the second screen is connected to the first screen, the upper dust cover is installed on the second screen, and the side dust suction hood is connected to the side formed by the connection of the receiving hopper, the first screen, and the second screen; a rotating shaft is connected to one end of the bottom of the receiving hopper; and
[0008] Connecting rod;
[0009] The roller is connected to the slide rail, and the connecting rod is sleeved on the connecting shaft and rotated. The other end of the connecting rod is rotatably connected to the rotating shaft.
[0010] Optionally, the first and second screens have the same structure, both including annular baffles, baffles, screens, connecting plates, discharge ports, and dust removal screens; annular baffles are provided at the bottom of the annular baffles, and screens are embedded and fixedly installed in the baffles; connecting plates are vertically installed above and below the annular baffles, and screw holes are constructed on the connecting plates; through holes are constructed at opposite ends of the annular baffles, one through hole is connected to the discharge port, and the other through hole is covered and fixedly installed with dust removal screens.
[0011] Optionally, the receiving hopper has the same structure as the first and second screens, except that the bottom is sealed.
[0012] Optionally, the side dust hood is equipped with an air duct and connected to a negative pressure dust collector.
[0013] Optionally, the upper dust cover is equipped with a discharge pipe that connects to the hopper.
[0014] Optionally, the discharge port is equipped with a collection hopper and connected to the finished product warehouse via a pipe.
[0015] Optional, the slide can be tilted, with an angle greater than 5 degrees and less than 15 degrees.
[0016] Optionally, the slide is a conical slide, and the rollers are V-shaped wheels adapted to the conical slide.
[0017] Optionally, the discharge pipe of the upper dust cover is located at four-fifths of the length of the second screen.
[0018] The technical solution provided in this application may include the following beneficial effects:
[0019] This device sieves material from a dust cover onto a second screen for initial screening, then onto a first screen for secondary screening, before finally collecting it in a hopper. The number of layers and the size of the screen openings can be adjusted according to the specific screening mesh requirements. Dust generated during screening and the screening process is contained by the upper dust cover and simultaneously sucked away by the side suction hoods, ensuring that no health-threatening dust is generated during screening and minimizing dust generation from the screened material.
[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0021] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.
[0022] Figure 1 This is a schematic diagram of the structure shown in the embodiments of this application;
[0023] Figure 2 This is a top view of the screen shown in an embodiment of this application;
[0024] Figure 3 This is a side sectional view of the screen shown in an embodiment of this application;
[0025] Figure 4 This is a schematic diagram illustrating the connection between the slide and the pulley in an embodiment of this application;
[0026] Figure label:
[0027] 1. Support frame; 11. Motor; 12. Shaft seat; 13. Pulley; 14. Drive wheel; 15. Connecting shaft; 16. Slide rail; 2. Connecting rod; 31. Receiving hopper; 32. First screen; 33. Second screen; 34. Side dust suction hood; 35. Upper dust cover; 36. Roller; 321. Annular side guard; 322. Baffle; 323. Screen; 324. Connecting plate; 325. Discharge port; 326. Dust removal screen. Detailed Implementation
[0028] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.
[0029] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0030] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.
[0031] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0032] To address the aforementioned problems, this application provides a zinc slag screening device. The technical solution of this application embodiment is described in detail below with reference to the accompanying drawings.
[0033] like Figure 1 The zinc slag screening device shown includes:
[0034] The bracket 1 has a slide rail 16. A motor 11 and a rotating shaft seat 12 are connected and installed on the bracket 1. A pulley 13 and a drive wheel 14 are connected and installed in the rotating shaft seat 12 through a rotating shaft. A connecting shaft 15 is constructed on the surface of the drive wheel 14. The motor 11 is connected to the pulley 13 through belt drive. The rotation of the motor 11 drives the pulley 13 to rotate, which in turn transmits the rotation to the drive wheel 14 through the rotating shaft, thereby driving the drive wheel 14 to rotate and drive the equipment to operate.
[0035] This application also includes a screening mechanism and a connecting rod 2. The screening mechanism includes a receiving hopper 31, a first screen 32, a second screen 33, a side dust suction cover 34, and an upper dust cover 35; a roller 36 is connected to the bottom of the receiving hopper 31, the first screen 32 is connected to the receiving hopper 31, the second screen 33 is connected to the first screen 32, the upper dust cover 35 is installed on the second screen 33, and the side dust suction cover 34 is connected to the side formed by the connection of the receiving hopper 31, the first screen 32, and the second screen 33; a rotating shaft is connected to one end of the bottom of the receiving hopper 31.
[0036] Among them, roller 36 is connected to slide rail 16, and connecting rod 2 is sleeved on connecting shaft 15 and rotated. The other end of connecting rod 2 is rotatably connected to rotating shaft.
[0037] In this application, the rotation of the drive wheel 14 is transmitted to the screening mechanism via the connecting shaft 15. Since the entire screening mechanism is slidably connected to the slide rail 16 via rollers 36, the rotation of the drive wheel 14 pulls the screening mechanism back and forth, thereby achieving screening. The material falls from the upper dust cover 35 onto the second screen 33 for initial screening, then falls again onto the first screen 32 for secondary screening, and finally falls into the receiving hopper 31 for collection. In this application, the number of layers and the size of the screen holes can be set according to the specific screening mesh requirements. The dust generated as it falls into the screening mechanism and the dust generated during the screening process are covered by the upper dust cover 35 and cannot escape, while being sucked away by the side suction dust cover 34. This ensures that no health-threatening dust is generated during screening, and also minimizes dust generation from the screened material.
[0038] In this application, to facilitate the connection and sieving between the various layers of screens, and also to facilitate the collection of the dust raised, such as Figure 2 and Figure 3 As shown, the first screen 32 and the second screen 33 have the same structure, both including an annular baffle 321, a baffle 322, a screen 323, a connecting plate 324, a discharge port 325, and a dust collection screen 236. Specifically, the annular baffle 321 is a square annular groove. An annular baffle 322 is provided at the bottom of the annular baffle 321. The screen 323 is embedded and fixedly installed on or inside the baffle 322. The connecting plate 324 is vertically installed above and below the annular baffle 321. The connecting plate 324 has screw holes, and the upper and lower screens are fastened together by screws. Through holes are provided at opposite ends of the annular baffle 321. One through hole is connected to the discharge port 325, and the other through hole is covered and fixedly installed with the dust collection screen 236 to prevent dust from being collected while the material passes through. At the same time, the receiving hopper is the same as the first screen 32 and the second screen 33 except that the bottom is sealed.
[0039] Thus, in the entire screening mechanism, apart from the feeding and discharging points, only the side dust hood 34 is connected to the outside. During use, the side dust hood 34 is equipped with an air duct connected to a negative pressure dust collector, the upper dust cover 35 is equipped with a discharge pipe connected to the hopper, and the discharge port 325 is equipped with a collection hopper and connected to the finished product hopper through a pipe. The equipment is in a relatively sealed state during operation, and the back-and-forth screening method replaces the vibrating screening, which reduces the generation of dust and can also suck up the dust that is inevitably generated, making the entire screening clean and preventing leakage that threatens the health of the workers.
[0040] In one embodiment, to facilitate the screening and rolling of materials, the slide 16 is inclined at an angle greater than 5 degrees and less than 15 degrees, specifically 7 degrees or 8 degrees. This angle satisfies the natural rolling screening of materials during screening without causing them to roll too quickly and become unscreenable, while also reducing the traction strength of the connecting rod 2.
[0041] In another embodiment, such as Figure 1 As shown, the discharge pipe of the upper dust cover 35 is located at four-fifths or three-quarters of the length of the second screen near the side dust cover 34. This ensures that the dust generated during discharge can be adsorbed and also prevents the material from accumulating and clogging the dust removal screen 236.
[0042] In one embodiment, such as Figure 4 As shown, the slide 16 is a conical slide, and the roller 36 is a V-shaped wheel adapted to the conical slide, which facilitates positioning and sliding.
[0043] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0044] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.
[0045] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A zinc slag screening device, characterized in that, include: A bracket (1) is provided with a slide rail (16). A motor (11) is connected to the bracket (1). A rotating shaft seat (12) is provided with a pulley (13) and a drive wheel (14) connected by a rotating shaft inside the rotating shaft seat (12). A connecting shaft (15) is provided on the surface of the drive wheel (14). The motor (11) is connected to the pulley (13) via a belt drive. Screening mechanism; the screening mechanism includes a receiving hopper (31), a first screen (32), a second screen (33), a side dust suction cover (34), and an upper dust cover (35); a roller (36) is connected to the bottom of the receiving hopper (31), the first screen (32) is connected to the receiving hopper (31), the second screen (33) is connected to the first screen (32), the upper dust cover (35) is installed on the second screen (33), and the side dust suction cover (34) is connected to the side formed after the receiving hopper (31), the first screen (32), and the second screen (33) are connected; a rotating shaft is connected to one end of the bottom of the receiving hopper (31); and Connecting rod (2); Among them, the roller (36) is connected to the slide (16), and the connecting rod (2) is sleeved on the connecting shaft (15) and rotated. The other end of the connecting rod (2) is rotatably connected to the rotating shaft.
2. The zinc slag screening device according to claim 1, characterized in that: The first screen (32) and the second screen (33) have the same structure, both including an annular baffle (321), a baffle (322), a screen (323), a connecting plate (324), a discharge port (325), and a dust removal screen (236). An annular baffle (322) is provided at the bottom of the annular baffle (321), and the screen (323) is embedded and fixed in the baffle (322). The connecting plate (324) is vertically provided above and below the annular baffle (321), and screw holes are constructed on the connecting plate (324). Through holes are constructed at opposite ends of the annular baffle (321), one of the through holes is connected to the discharge port (325), and the other through hole is covered and fixedly provided with the dust removal screen (236).
3. The zinc slag screening device according to claim 2, characterized in that: The receiving hopper is identical in structure to the first screen (32) and the second screen (33), except that the bottom is sealed.
4. The zinc slag screening device according to claim 1, characterized in that: The side dust hood (34) is equipped with an air duct and is connected to a negative pressure dust collector.
5. A zinc slag screening device according to claim 1, characterized in that: The upper dust cover (35) is equipped with a discharge pipe and connected to the hopper.
6. A zinc slag screening device according to claim 2, characterized in that: The discharge port (325) is covered with a material collection hopper and connected to the finished product warehouse through a pipe.
7. A zinc slag screening device according to claim 1, characterized in that: The slide (16) is inclined, with an inclination angle greater than 5 degrees and less than 15 degrees.
8. A zinc slag screening device according to claim 1 or 7, characterized in that: The slide (16) is a conical slide, and the roller (36) is a V-shaped wheel adapted to the conical slide.
9. A zinc slag screening device according to claim 1 or 7, characterized in that: The material discharge pipe of the upper dust cover (35) is located at four-fifths of the length of the second screen.