Multistage vibrating screen for iron ore

Abstract

The utility model discloses an iron ore multistage vibrating screen which comprises a bottom plate, the top end of the bottom plate is fixedly connected with a screening mechanism, the screening mechanism comprises a first connecting column, the first connecting column is fixedly arranged at the top end of the bottom plate, and the bottom end of the first connecting column is fixedly connected with a first motor. The driven rotating disc is driven to rotate through the transmission belt, the eccentric column converts rotating motion into reciprocating swing of the driving column, the driving column pushes the screening disc to conduct high-frequency vibration through the second fixing column, iron ore is layered according to the particle size under the vibration effect, small-particle iron ore and impurities fall down through screening holes, and large-particle iron ore stays on the surface of the screening disc. When the first motor stops working, large-particle iron ore can be manually taken out, the static contact time of the ore and impurities is shortened through dynamic screening, it is avoided that the impurities are embedded into the ore in the crushing process, efficient and uniform screening is achieved through the multi-stage linkage design, and the impurity embedding risk is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of iron ore screening technology, specifically to a multi-stage vibrating screen for iron ore. Background Technology

[0002] Iron ore is an important raw material for steel production enterprises. Iron ore is gradually separated into iron through processes such as crushing, grinding, magnetic separation, flotation, and gravity separation. It is a mineral aggregate containing elemental iron or iron compounds that can be economically utilized. Because the iron ore mined from the mine has a complex composition of impurities, it usually needs to undergo several preliminary selections before being loaded onto trucks.

[0003] For example, CN222778402U discloses a multi-stage vibrating screen for iron ore, including an iron ore screening machine box. A feed processing box is fixedly connected to the top of the iron ore screening machine box. A fixed frame is fixedly installed on the top of the inner wall of the iron ore screening machine box. A drive motor is fixedly installed on the bottom of the inner wall of the fixed frame. A rotating disk is fixedly connected to the output end of the drive motor. A hinge rod is rotatably connected to the surface of the rotating disk through a pin. A lifting plate is rotatably connected to the bottom of the hinge rod through a pin seat.

[0004] This patent involves adding a feeding box above the iron ore screening machine to crush the iron ore, and then using a subsequent up-and-down rotating vibrating screen to perform multi-stage screening of the iron ore. However, the iron ore may contain associated impurities during the pretreatment stage, and these impurities may penetrate into the ore crystal lattice when crushed together with the ore. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage vibrating screen for iron ore, in order to solve the problem mentioned in the background art that iron ore may contain associated impurities during the pretreatment stage, and that these impurities may penetrate into the ore crystal lattice when crushed together with the ore.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a multi-stage vibrating screen for iron ore, comprising a base plate, a screening mechanism fixedly connected to the top of the base plate, the screening mechanism including a connecting column one, the connecting column one being fixedly disposed at the top of the base plate, a motor one being fixedly connected to the bottom of the connecting column one, a drive turntable being movably connected to the top of the connecting column one, a transmission belt being movably connected to the inner cavity of the drive turntable, a driven turntable being movably connected to the side of the transmission belt away from the drive turntable, an eccentric column being fixedly connected to the top of the driven turntable, a driving column being fixedly connected to the outer side of the eccentric column, a fixed column two being fixedly connected to one end of the driving column, and a screening disc being fixedly connected to one end of the fixed column two.

[0008] Furthermore, one end of the connecting column is fixedly connected to the screening main plate, and the bottom end of the screening main plate is fixedly connected to the fixing column. The screening main plate is connected to the bottom plate through the fixing column.

[0009] Furthermore, the inner cavity of the screening main plate is movably connected to a movable column, and four sets of movable columns are symmetrically arranged. One end of each movable column is fixedly connected to a connecting column two, and the movable column is connected to the screening disc through the connecting column two.

[0010] Furthermore, a vibration mechanism is fixedly connected to the top of the base plate. The vibration mechanism includes a fixed column three, which is fixedly connected to the top of the base plate. A connecting shaft one is fixedly connected to one end of the fixed column three, and a motor two is fixedly connected to one end of the connecting shaft one. A connecting plate one is movably connected to the outer side of the connecting shaft one.

[0011] Furthermore, the inner cavity of the fixed column one is movably connected to the connecting column three, and one end of the connecting column three is hinged to the connecting plate two, which is hinged to the connecting plate one.

[0012] Furthermore, a spring is fixedly connected to one end of the connecting column three, the connecting column three is slidably connected to the fixed column three through the spring, a fixed column four is fixedly connected to the top end of the connecting column three, and a slope plate one is fixedly connected to the top end of the fixed column four.

[0013] Furthermore, a fixed column five is movably connected to the inner cavity of the fixed column three. The fixed column five is connected to the connecting column three via a spring. A connecting column four is fixedly connected to the top of the fixed column five. A vibrating plate is fixedly connected to the top of the connecting column four.

[0014] Furthermore, the inner cavity of the vibratory plate is provided with several symmetrically arranged slots, and the inner cavity of the vibratory plate is fixedly connected with a second slope plate, and two sets of the second slope plate are symmetrically arranged.

[0015] This utility model has the following beneficial effects:

[0016] I. This utility model is equipped with a screening mechanism. Motor 1 drives the active turntable to rotate, which in turn drives the driven turntable to rotate via a transmission belt. The eccentric column converts the rotational motion into the reciprocating oscillation of the driving column. The driving column pushes the screening disc to vibrate at high frequency through the fixed column 2. Under the action of vibration, the iron ore is stratified according to particle size. Smaller iron ore particles and impurities fall through the screen holes, while larger particles remain on the surface of the screening disc. When Motor 1 stops working, the large iron ore particles can be removed manually. Dynamic screening reduces the static contact time between the ore and impurities, and avoids impurities from embedding into the ore during the crushing process. Through multi-stage linkage design, efficient and uniform screening is achieved, which significantly reduces the risk of impurity embedding.

[0017] II. Based on the above-mentioned beneficial effects, a vibration mechanism is also provided. Motor II drives connecting shaft I to rotate, causing connecting plate I to swing. Through the hinged connecting plate II, connecting column III moves laterally, causing fixed column IV and slope plate I, which are vertically connected to connecting column III, to move laterally. Small iron ore particles passing through the vibrating plate slide freely off the slope for easy collection. The vibrating plate generates a vibration effect under the action of spring, fixed column V, and connecting column IV. The vibrating plate performs secondary vibration screening of the ore through the slot and slope plate II to further separate residual impurities and ensure screening purity. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection of the fixed column of the screening mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram showing the connection of the screening disc in the screening mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the three connections of the fixed column of the vibration mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection of the vibrating plate in the vibration mechanism of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. Base plate; 2. Screening mechanism; 21. Fixed column one; 22. Screening main plate; 23. Connecting column one; 24. Motor one; 25. Driven turntable; 26. Transmission belt; 27. Driven turntable; 28. Eccentric column; 29. ​​Driving column; 210. Fixed column two; 211. Screening disc; 212. Movable column; 213. Connecting column two; 3. Vibration mechanism; 31. Fixed column three; 32. Connecting shaft one; 33. Motor two; 34. Connecting plate one; 35. Connecting column three; 36. Connecting plate two; 37. Spring; 38. Fixed column four; 39. Slope plate one; 310. Fixed column five; 311. Connecting column four; 312. Vibrating plate; 313. Slope plate two. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0028] Please see Figure 1-3 As shown, this utility model is a multi-stage vibrating screen for iron ore, including a base plate 1. A screening mechanism 2 is fixedly connected to the top of the base plate 1. The screening mechanism 2 includes a connecting column 23, which is fixedly disposed at the top of the base plate 1. A motor 24 is fixedly connected to the bottom of the connecting column 23. An active turntable 25 is movably connected to the top of the connecting column 23. A transmission belt 26 is movably connected to the inner cavity of the active turntable 25. A driven turntable 27 is movably connected to the side of the transmission belt 26 away from the active turntable 25. An eccentric column 28 is fixedly connected to the top of the driven turntable 27. A driving column 29 is fixedly connected to the outer side of the eccentric column 28. A fixed column 210 is fixedly connected to one end of the driving column 29. A screening disc 211 is fixedly connected to one end of the fixed column 210.

[0029] For example, motor 24 is a DC motor with a power setting of 30W. This power ensures sufficient power for the vibration of the screening disc 211 while also taking into account the overall energy consumption control of the equipment, achieving a good energy efficiency ratio. The speed of motor 24 is designed to be 1200 r / min. This speed has been verified through multiple tests and simulations. When combined with the structure and mass of the screening disc 211, it can enable the screening disc 211 to achieve an ideal vibration state. The motor 24 drives the active turntable 25, which in turn drives the driven turntable 27 to rotate via the transmission belt 26. The eccentric column 28 and the driving column 29 convert the circumferential motion into the reciprocating vibration of the screening disc 211, achieving efficient screening and preventing impurities from being embedded in the ore due to static accumulation. Based on the speed of motor 24 and the structural characteristics of the screening disc 211, the vibration frequency of the screening disc 211 is 20Hz. During iron ore screening, this vibration frequency effectively causes the iron ore to jump and tumble continuously on the screening disc 211, increasing the contact probability between the iron ore and the screen holes, thereby improving screening efficiency. The amplitude of the screening disc 211 is set to 8mm. This amplitude provides sufficient jumping energy for large iron ore particles, achieving good stratification and facilitating smooth passage through the screen. It effectively avoids problems such as difficulty in moving and accumulation of large particles due to excessively small amplitude, and decreased equipment stability and excessive material spillage due to excessively large amplitude.

[0030] One end of the connecting column 23 is fixedly connected to the screening main board 22, and the bottom end of the screening main board 22 is fixedly connected to the fixing column 21. The screening main board 22 is connected to the base plate 1 through the fixing column 21.

[0031] For example, the rigid connection between the fixed column 21 and the screening main plate 22 ensures the stability of the screening mechanism 2, reduces vibration transmission to the bottom plate 1, and reduces equipment wear.

[0032] The inner cavity of the screening main board 22 is movably connected to a movable column 212. Four sets of movable columns 212 are symmetrically arranged. One end of the movable column 212 is fixedly connected to a connecting column 213. The movable column 212 is connected to the screening disc 211 through the connecting column 213.

[0033] For example, four sets of symmetrical movable columns 212 are linked with the screening disc 211 through connecting column 213, so that the screening disc 211 moves more evenly and improves the screening accuracy.

[0034] Working principle: Motor 1 24 drives the active turntable 25 to rotate, which in turn drives the driven turntable 27 to rotate via the transmission belt 26. The eccentric column 28 converts the rotational motion into the reciprocating oscillation of the drive column 29. The drive column 29 pushes the screening disc 211 to vibrate at high frequency through the fixed column 210. Under the action of vibration, the iron ore is stratified according to particle size. Smaller iron ore particles and impurities fall through the screen holes, while larger particles remain on the surface of the screening disc 211. When Motor 1 24 stops working, the large iron ore particles can be removed manually. Dynamic screening reduces the static contact time between the ore and impurities, and avoids impurities from embedding inside the ore during the crushing process.

[0035] This step, through a multi-stage linkage design, achieves efficient and uniform screening, significantly reducing the risk of impurity embedding.

[0036] Please see Figure 4-5 As shown, this embodiment, based on the above embodiment, further includes a vibration mechanism 3.

[0037] A vibration mechanism 3 is fixedly connected to the top of the base plate 1. The vibration mechanism 3 includes a fixed column 31, which is fixedly connected to the top of the base plate 1. A connecting shaft 32 is fixedly connected to one end of the fixed column 31. A motor 33 is fixedly connected to one end of the connecting shaft 32. A connecting plate 34 is movably connected to the outside of the connecting shaft 32.

[0038] For example, motor 2 33 drives connecting plate 1 34 to swing through connecting shaft 1 32, providing a power source for vibration mechanism 3 and realizing controllable vibration frequency.

[0039] The inner cavity of the fixed column 21 is movably connected to the connecting column 35, and one end of the connecting column 35 is hinged to the connecting plate 26. The connecting plate 26 and the connecting plate 34 are hinged together.

[0040] A spring 37 is fixedly connected to one end of the connecting column 35. The connecting column 35 is slidably connected to the fixed column 31 through the spring 37. A fixed column 4 38 is fixedly connected to the top of the connecting column 35. A slope plate 1 39 is fixedly connected to the top of the fixed column 4 38.

[0041] For example, spring 37 buffers the vibration of connecting column 35, reduces rigid impact, and extends equipment life; slope plate 39 guides ore flow and avoids accumulation.

[0042] The inner cavity of the fixed column 31 is movably connected to the fixed column 5 310. The fixed column 5 310 is connected to the connecting column 35 via the spring 37. The top of the fixed column 5 310 is fixedly connected to the connecting column 4 311. The top of the connecting column 4 311 is fixedly connected to the vibrating plate 312.

[0043] The inner cavity of the vibratory plate 312 has several symmetrically arranged slots, and the inner cavity of the vibratory plate 312 is fixedly connected to a second slope plate 313, which is arranged in two sets symmetrically.

[0044] For example, the symmetrical slot and slope plate 2313 further disperse the ore flow, enhance the impurity separation effect, and reduce secondary mixing.

[0045] Working principle: Motor 2 33 drives the connecting shaft 1 32 to rotate, causing the connecting plate 1 34 to swing. The connecting plate 2 36, which is hinged, pulls the connecting column 3 35 to move laterally, causing the fixed column 4 38 and the slope plate 1 39, which are vertically connected to the connecting column 3 35, to move laterally. This allows the small iron ore particles passing through the vibrating plate 312 to slide freely down the slope for easy collection. The vibrating plate 312 generates a vibration effect under the action of the spring 37, the fixed column 5 310, and the connecting column 4 311. The vibrating plate 312 performs secondary vibration screening of the ore through the slot and the slope plate 2 313, further separating residual impurities and ensuring screening purity.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-stage iron ore vibrating screen, characterised in that, The device includes a base plate (1), a screening mechanism (2) is fixedly connected to the top of the base plate (1), the screening mechanism (2) includes a connecting column (23), the connecting column (23) is fixedly set at the top of the base plate (1), the bottom end of the connecting column (23) is fixedly connected to a motor (24), the top of the connecting column (23) is movably connected to an active turntable (25), the inner cavity of the active turntable (25) is movably connected to a transmission belt (26), the side of the transmission belt (26) away from the active turntable (25) is movably connected to a driven turntable (27), the top of the driven turntable (27) is fixedly connected to an eccentric column (28), the outer side of the eccentric column (28) is fixedly connected to a driving column (29), one end of the driving column (29) is fixedly connected to a fixed column (210), and one end of the fixed column (210) is fixedly connected to a screening disc (211).

2. A multi-stage iron ore vibrating screen as claimed in claim 1, wherein: One end of the connecting column (23) is fixedly connected to the screening main plate (22), and the bottom end of the screening main plate (22) is fixedly connected to the fixing column (21). The screening main plate (22) is connected to the bottom plate (1) through the fixing column (21).

3. A multi-stage iron ore vibrating screen as claimed in claim 2, wherein: The inner cavity of the screening main board (22) is movably connected to a movable column (212). Four sets of movable columns (212) are symmetrically arranged. One end of the movable column (212) is fixedly connected to a connecting column two (213). The movable column (212) is connected to the screening disc (211) through the connecting column two (213).

4. A multi-stage iron ore vibrating screen as claimed in claim 2, wherein: The top of the base plate (1) is fixedly connected to a vibration mechanism (3). The vibration mechanism (3) includes a fixed column three (31). The fixed column three (31) is fixedly connected to the top of the base plate (1). One end of the fixed column three (31) is fixedly connected to a connecting shaft one (32). One end of the connecting shaft one (32) is fixedly connected to a motor two (33). The outer side of the connecting shaft one (32) is movably connected to a connecting plate one (34).

5. A multi-stage iron ore vibrating screen as claimed in claim 4, characterised in that: The inner cavity of the fixed column one (21) is movably connected to the connecting column three (35), and one end of the connecting column three (35) is hinged to the connecting plate two (36), and the connecting plate two (36) and the connecting plate one (34) are hinged together.

6. A multi-stage iron ore vibrating screen as claimed in claim 5, characterised in that: One end of the connecting column three (35) is fixedly connected to a spring (37), the connecting column three (35) is slidably connected to the fixed column three (31) through the spring (37), the top end of the connecting column three (35) is fixedly connected to a fixed column four (38), and the top end of the fixed column four (38) is fixedly connected to a slope plate one (39).

7. A multi-stage iron ore vibrating screen as claimed in claim 4, wherein: The inner cavity of the fixed column three (31) is movably connected to the fixed column five (310). The fixed column five (310) is connected to the connecting column three (35) by a spring (37). The top end of the fixed column five (310) is fixedly connected to the connecting column four (311), and the top end of the connecting column four (311) is fixedly connected to the vibrating plate (312).

8. A multi-stage iron ore vibrating screen as claimed in claim 7, characterised in that: The inner cavity of the vibration disc (312) is provided with a plurality of symmetrically arranged notches, and the inner cavity of the vibration disc (312) is fixedly connected with a slope plate two (313), and the slope plate two (313) is symmetrically provided with two groups.

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