Mineral screen
By designing the structure of the side plate, front support, and bar fixing plate, the replacement of individual bars was realized, solving the problem of replacing the entire screen due to bar breakage, improving the continuity of zinc hydrometallurgical production and reducing maintenance costs.
Patent Information
- Application Number
- CN202422728322.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-09
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-09
AI Technical Summary
Bar vibrating screens are prone to breakage during zinc hydrometallurgical processes, requiring the entire screen to be replaced, which affects production continuity and increases maintenance costs.
Design a mineral screen structure including side plates, front supports and bar fixing plates. The bars are clamped by L-shaped bases and pressure plates, allowing individual bars to be replaced and avoiding the need to replace the entire screen.
It shortens repair time, reduces maintenance costs, avoids the risk of production interruption caused by screen replacement, and extends the service life of the bars.
Smart Images
Figure CN223491404U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sieve technology, specifically, it relates to a mineral sieve. Background Technology
[0002] Industrial production operates continuously. In mineral processing, minerals need to be screened before proceeding to the next stage. For example, in the zinc hydrometallurgical process, zinc concentrate, after being batched, is conveyed by a belt conveyor to a bar vibrating screen for screening. The undersize material is sent to the intermediate silo of the fluidized bed furnace for use, while the oversize material is sorted and recycled. In practice, bar breakage frequently occurs in the bar vibrating screen, affecting the normal screening of zinc concentrate. This necessitates stopping the vibrating screen and replacing the entire screen, a process that takes 1.5–2.5 hours. Since the fluidized bed furnace operates continuously, the zinc concentrate stored in the intermediate silo can only be supplied normally for 2.5 hours. Replacing the screen poses a risk of feed shortage to the fluidized bed furnace, impacting the normal operation of the zinc hydrometallurgical system. Furthermore, replacing the entire screen due to individual bar breakage increases maintenance costs. Utility Model Content
[0003] In order to overcome the problems existing in the background technology, this utility model provides a mineral screen. When the bar breaks, only the damaged bar needs to be replaced. Compared with replacing the screen, it greatly speeds up the maintenance, saves screen maintenance time and cost, and avoids the impact of screen replacement on production and material supply.
[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0005] The mineral screen includes two side plates, a front support, bars, and bar fixing plates; the two side plates are arranged in parallel, and each bar fixing plate is fixed in parallel between the two side plates, with through holes provided on the bar fixing plates; the front support is fixed to the front end of the two side plates.
[0006] The front support includes an L-shaped base, a pressure plate, and bolts; the L-shaped base is formed by a horizontal plate and a vertical plate, and bolt holes are provided on the horizontal plate and the pressure plate; the L-shaped base and the pressure plate are connected by bolts; the pressure plate is positioned above the horizontal plate, and its front end does not exceed the vertical plate of the L-shaped base; the bar passes through the through holes on each bar fixing plate, and its front end is clamped and fixed by the L-shaped base and the pressure plate.
[0007] Preferably, the L-shaped base is fixedly connected to the side plate.
[0008] Preferably, the bar fixing plates are fixed parallel to each other at unequal intervals between the two side plates, and each bar fixing plate has through holes that are aligned front to back and of the same size.
[0009] Preferably, the bolt holes on the horizontal plate and the pressure plate are provided to avoid the bar.
[0010] Preferably, the distance between the through hole and the side edge of the bar fixing plate is less than 1 cm.
[0011] The beneficial effects of this utility model are:
[0012] This utility model utilizes a structural design with two side plates, a front support, and bar fixing plates. The two side plates and the front support form a square frame structure with only three sides, which facilitates both the insertion and removal of the bars. Furthermore, this design takes advantage of the screen's low front and high rear structure, with the front support positioned at the front. During use, the front end of the bars is clamped, ensuring their fixation. Additionally, each bar fixing plate limits the position of the bars, ensuring they are equidistant and spaced at a fixed interval.
[0013] This invention, by adjusting the position of the two bar fixing plates at the rear end of the side plate, can prevent the swaying of the extended end of the bar during operation of the vibrating screen, thus extending the service life of the bar.
[0014] This invention allows broken bars to be pulled out from the rear end of the screen by loosening the connecting bolts between the front support and the pressure plate, thus replacing the bars. This eliminates the need to replace the entire screen due to a single broken bar, reducing screen maintenance time and costs. It also avoids the risk of material shortage in the fluidized bed furnace and disruption to the normal production of the zinc hydrometallurgical system due to screen replacement. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the bar fixing plate structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the front support structure of this utility model;
[0018] In the diagram, 1. Side plate, 2. Bar, 3. Bar fixing plate, 31. Through hole, 4. Front support, 41. L-shaped base, 42. Pressure plate, 43. Bolt, 411. Horizontal plate, 412. Vertical plate. Detailed Implementation
[0019] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.
[0020] In the description of this utility model, unless otherwise stated, the terms "front", "rear", "tail", etc., indicate the orientation or state relationship based on the orientation or state relationship shown in the 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.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "equipped with" 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. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0022] like Figure 1-3 As shown, the mineral screen includes a side plate 1, a front support 4, bars 2, and a bar fixing plate 3.
[0023] Two side plates 1 are set in parallel, and each bar fixing plate 3 is parallel to each other and fixed between the two side plates 1. The bar fixing plate 3 has a through hole 31, and the distance from the hole wall to the upper side of the bar fixing plate 3 is less than 1cm to ensure that the minerals can slide smoothly from above the bar fixing plate 3 when the vibrating screen is running. The bars 2 pass through the through hole 31 and are fixed at a fixed distance by the bar fixing plate 3. The spacing between the bars 2 is adapted to the mineral screening requirements. It should be noted that: during the initial installation, the bars 2 should be passed through each bar fixing plate 3 first, and the spacing of each bar fixing plate 3 should be adjusted. Then, each bar fixing plate 3 should be fixed to the side plate 1 to ensure that the through hole 31 of each bar fixing plate 3 is aligned, which facilitates the replacement of the bars 2 later.
[0024] The front support 4 includes an L-shaped base 41, a pressure plate 42, and bolts 43. The L-shaped base 41 is a right-angled plate consisting of a horizontal plate 411 and a vertical plate 412. Bolt holes facing each other are provided on both the pressure plate 42 and the horizontal plate 411 of the L-shaped base 41. Bolts 43 pass through these bolt holes to connect the two components. The pressure plate 42 is positioned above the horizontal plate 411. It is important to note that the front end of the pressure plate 42 should not exceed the vertical plate of the L-shaped base 41 to prevent the vertical plate from obstructing the clamping of the pressure plate 42 and the L-shaped base 41 when clamping the bar 2.
[0025] The front support 4 is fixed to the front end of the two side plates 1. The L-shaped base 41 is fixedly connected to the side plate 1. After the bar 2 passes through each bar fixing plate 3, its front end is clamped by the L-shaped base 41 and the pressure plate 42. By setting the L-shaped base 41, the insertion of each bar 2 can be limited. After insertion, the front end of the bar 2 abuts against the vertical plate of the L-shaped base 41.
[0026] The bar fixing plates 3 are set at irregular intervals between the two side plates 1. Each bar fixing plate 3 has through holes 31 that are aligned front and back and of the same size. The fixing position of the last bar fixing plate 3 is no more than 10cm away from the rear end of the side plate 1. That is, after the bar 2 is installed, the tail extension length is no more than 10cm. This can prevent the tail extension of the bar 2 from breaking due to high-frequency swing during use and extend the service life of the bar 2.
[0027] Meanwhile, the distance between the frontmost bar fixing plate 3 and the rearmost end of the clamping plate 42 does not exceed 10cm. This limits the front end of each bar 2 to prevent deformation during use, and ensures that the bar 2 can be easily pulled out during maintenance.
[0028] Bolt holes on the horizontal plate 411 and pressure plate 42 of the L-shaped base 41 are provided to avoid the bolt 43 blocking the insertion of the rod 2 into the front support 4.
[0029] Bar replacement operation demonstration:
[0030] When a bar 2 needs to be replaced, loosen the bolt 43, remove the pressure plate 42, pull out the bar 2 to be replaced from the rear end of the screen, insert the new bar 2 until the front end of the bar 2 abuts against the vertical plate 412 of the L-shaped base 41, install the pressure plate 42 and tighten the bolt 43.
[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.
Claims
1. A mineral sieve, characterized in that, It includes two side plates (1), a front support (4), a bar (2) and a bar fixing plate (3); the two side plates (1) are arranged in parallel, and each bar fixing plate (3) is fixed in parallel between the two side plates (1), and a through hole (31) is provided on the bar fixing plate (3); the front support (4) is fixed at the front end of the two side plates (1); The front support (4) includes an L-shaped base (41), a pressure plate (42), and bolts (43); the L-shaped base (41) is formed by a horizontal plate (411) and a vertical plate (412), and bolt holes with the upper and lower sides facing each other are provided on the horizontal plate (411) and the pressure plate (42); the L-shaped base (41) and the pressure plate (42) are connected by bolts (43); the pressure plate (42) is set above the horizontal plate (411), and the front end does not exceed the vertical plate (412) of the L-shaped base (41); the bar (2) passes through the through hole (31) on each bar fixing plate (3), and the front end is clamped and fixed by the L-shaped base (41) and the pressure plate (42).
2. The mineral sieve according to claim 1, characterized in that, The L-shaped base (41) is fixedly connected to the side plate (1).
3. The mineral sieve according to claim 1, characterized in that, The bar fixing plate (3) is fixed at unequal intervals between the two side plates (1).
4. The mineral screen according to claim 1, characterized in that, The bolt holes on the horizontal plate (411) and pressure plate (42) of the L-shaped base (41) are provided to avoid the bar (2).
5. The mineral sieve according to claim 1, characterized in that, The distance between the through hole (31) and the upper side of the bar fixing plate (3) is less than 1 cm.