A screening device for iron ore processing

Abstract

The application relates to a screening device for iron ore processing, which comprises a frame body, a supporting seat arranged on the frame body, a grading screening cylinder rotationally arranged in the supporting seat, a driving element arranged on the supporting seat and used for driving the grading screening cylinder to rotate, and a conveying unit arranged at one end of the frame body. The grading screening cylinder comprises a plurality of screening cylinders connected in sequence, the screen holes of the plurality of screening cylinders increase in sequence along the length of the frame body, the inner side of the screening cylinder is provided with a fixing frame, and the fixing frame is connected with the driving element. The bottom of the supporting seat is provided with a plurality of discharge hoppers, and the discharge hoppers are located at the bottom of the corresponding screening cylinders. The application can simultaneously perform multi-stage screening on iron ore in one device through the cooperation of the driving element, the supporting seat and the grading screening cylinder, the screening efficiency is greatly improved, and the working strength of the operator is reduced.

Description

Technical Field

[0001] This application relates to the field of iron ore processing technology, and in particular to a screening device for iron ore processing. Background Technology

[0002] In the iron ore processing industry, after crushing, iron ore needs to be screened according to different particle size requirements to meet the precise particle size requirements of subsequent smelting, beneficiation, and other processes. As a crucial step in the iron ore processing flow, the efficiency and quality of screening directly affect the overall production efficiency and product quality.

[0003] Currently, various types of iron ore screening equipment exist on the market. However, most traditional screening equipment has significant limitations. Some equipment can only perform single-stage screening, meaning it can only screen out one type of iron ore particle size at a time. This implies that to obtain iron ore products of various particle sizes, the screening equipment needs to be adjusted or replaced for multiple screening operations. This multi-stage, single-pass screening method not only greatly increases the workload of workers and raises the cost of purchasing multiple pieces of equipment, but also affects processing efficiency.

[0004] To address the aforementioned problems, a screening device for iron ore processing is now designed. Utility Model Content

[0005] This application provides a screening device for iron ore processing to solve the problem that most traditional screening equipment in the related technology has obvious limitations, and some screening equipment can only realize single-stage screening function at the same time, that is, it can only screen out iron ore of one particle size at a time, which affects the work efficiency.

[0006] In a first aspect, a screening device for iron ore processing is provided, comprising: The frame has a support base, and a grading and screening cylinder is rotatably installed inside the support base. A driving component is installed on the support base to drive the grading and screening cylinder to rotate. A conveying unit is installed at one end of the frame to feed the stone into the grading and screening cylinder. The grading screening cylinder includes multiple screening cylinders connected in sequence. The screen holes of the multiple screening cylinders increase in size along the length of the frame. A fixing frame is provided inside the screening cylinder, and the fixing frame is connected to the driving component. The bottom of the support base is provided with multiple discharge hoppers, and the discharge hoppers are located at the bottom of the corresponding screening cylinder.

[0007] In some embodiments, the screening cylinder is cylindrical with open ends, the filter holes on the screening cylinder are distributed in a ring, and multiple screening cylinders are interconnected to form a grading screening cylinder.

[0008] In some embodiments, the fixing frame includes a plurality of connecting rods disposed inside the screening cylinder, and a fixing cylinder is disposed between the other ends of the plurality of connecting rods on the same side.

[0009] In some embodiments, the support base includes two side plates disposed opposite to each other on the frame, and a plurality of support plates are arranged sequentially between the two side plates. The top of the support plate is provided with a groove adapted to the grading screening cylinder, and the grading screening cylinder is rotatably engaged with the plurality of grooves. The support base also includes U-shaped seats arranged in a rectangular shape at both ends of the frame. Rollers are rotatably arranged inside the U-shaped seats, and the bottom of the grading and screening cylinder is rotatably engaged with the rollers.

[0010] In some embodiments, multiple support plates and two side plates are mutually enclosed to form multiple screening chambers, the screening chambers being adapted to the length of the screening cylinder; The discharge hopper is located at the bottom of the corresponding screening chamber, and one end of the discharge port of the discharge hopper is inclined downward.

[0011] In some embodiments, the drive unit includes two mounting seats disposed opposite to each other on the frame, each mounting seat being provided with a bearing seat, a rotating shaft being rotatably disposed between the two bearing seats, a fixed cylinder being fixedly connected to the side wall of the rotating shaft, and a drive motor and a reducer being disposed on one side of the mounting seat, the output shaft of the drive motor being connected to the input shaft of the reducer; Both the rotating shaft and the output shaft of the reducer are equipped with sprockets. The two sprockets have different diameters, one large and one small, and are connected by a chain drive.

[0012] In some embodiments, the conveying unit includes a belt conveyor arranged on one side of the frame, one end of the belt conveyor is inclined upward, a guide plate is provided at the inclined end of the belt conveyor, the other end of the guide plate is inclined downward and extends into the grading and screening cylinder, and a surrounding plate is provided on the guide plate. The other end of the belt conveyor is equipped with a feeding hopper.

[0013] In some embodiments, a dust extraction mechanism is also included; The dust collection mechanism includes a dust collection hopper arranged above the grading and screening cylinder, a pipe communicating with the dust collection hopper, and the other end of the pipe being connected to an external cyclone dust collector.

[0014] This application provides a screening device for iron ore processing. Through the coordinated use of a drive unit, a support base, and a grading screening cylinder, the screening cylinder with multiple screen holes of progressively larger size can simultaneously perform multi-stage screening of iron ore within one device, greatly improving screening efficiency, reducing the workload of operators, reducing the purchase cost of multiple devices, and also shortening the iron ore screening time, thereby improving the production efficiency of the entire iron ore processing flow.

[0015] Because the screen holes of each screening cylinder are of different sizes and increase sequentially, the iron ore can fully contact the screen holes in the rotating screening cylinder, so that iron ore of different particle sizes can be accurately separated, effectively avoiding the occurrence of material mixing, improving screening accuracy, and ensuring the requirements of subsequent processing steps for iron ore particle size. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural illustration provided for an embodiment of this application. Figure 1 ; Figure 2 A three-dimensional structural illustration provided for an embodiment of this application. Figure 2 ; Figure 3 This is a three-dimensional schematic diagram of a grading screening cylinder provided in an embodiment of this application; Figure 4 This is a schematic diagram of the conveying unit and frame assembly provided in the embodiments of this application; Figure 5 Three-dimensional schematic diagram of the support base provided in the embodiments of this application Figure 1 ; Figure 6 Three-dimensional schematic diagram of the support base provided in the embodiments of this application Figure 2 .

[0018] In the diagram: 1. Frame; 2. Support base; 3. Grading and screening cylinder; 4. Drive component; 5. Conveying unit; 31. Screening cylinder; 32. Fixed frame; 6. Discharge hopper; 321. Connecting rod; 322. Fixed cylinder; 21. Side plate; 22. Roller; 23. Support plate; 24. Groove; 25. U-shaped seat; 7. Screening chamber; 41. Mounting base; 42. Bearing seat; 43. Rotating shaft; 44. Drive motor; 45. Reducer; 51. Belt conveyor; 52. Guide plate; 521. Enclosure plate; 53. Feed hopper; 8. Dust collection mechanism; 81. Dust collection hopper; 82. Pipeline. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] This application provides a screening device for iron ore processing, which can solve the problem that most traditional screening equipment in the related technology has obvious limitations. Some screening equipment can only realize single-stage screening function at the same time, that is, it can only screen out iron ore of one particle size at a time, which affects the work efficiency.

[0021] Please see Figures 1-3 A screening device for iron ore processing includes: a frame 1 with a support base 2 on it; a grading screening cylinder 3 rotatably disposed inside the support base 2; a driving component 4 on the support base 2 for driving the grading screening cylinder 3 to rotate; a conveying unit 5 at one end of the frame 1 for feeding stone into the grading screening cylinder 3; the grading screening cylinder 3 includes multiple screening cylinders 31 connected in sequence, the screen holes of the multiple screening cylinders 31 increasing sequentially along the length of the frame 1; a fixing frame 32 on the inner side of the screening cylinder 31, the fixing frame 32 being connected to the driving component 4; and multiple discharge hoppers 6 at the bottom of the support base 2, the discharge hoppers 6 being located at the bottom of the corresponding screening cylinder 31.

[0022] After being crushed, the iron ore is placed in the conveying unit 5, which transports the stone upward into the grading and screening cylinder 3.

[0023] When the drive unit 4 is working, it drives the grading and screening cylinder 3 to rotate inside the support base 2. When the grading and screening cylinder 3 rotates, the iron ore that enters it will move together with the screening cylinder 31 under the action of centrifugal force and gravity.

[0024] As the screen openings of the multiple screening cylinders 31 increase sequentially along the length of the frame 1, smaller iron ore particles will pass through the screening cylinder 31 first and fall into the corresponding discharge hopper 6 at the bottom of the screening cylinder 31. Larger iron ore particles cannot pass through the screen openings of the current screening cylinder 31 and will continue to rotate with the screening cylinder 31 until they enter the next screening cylinder 31 with larger screen openings for further screening. Finally, iron ore of different particle sizes will be discharged from the corresponding discharge hopper 6, achieving multi-stage synchronous screening.

[0025] With the combined use of the drive unit 4, support base 2 and grading screening cylinder 3, the screening cylinder 31 with multiple screen holes of progressively larger size can simultaneously perform multi-stage screening of iron ore in one device, which greatly improves screening efficiency, reduces the workload of operators, reduces the purchase cost of multiple devices, and also shortens the screening time of iron ore, thereby improving the production efficiency of the entire iron ore processing flow.

[0026] Because the screen holes of each screening cylinder 31 are of different sizes and increase sequentially, the iron ore can fully contact the screen holes in the rotating screening cylinder 31, so that iron ore of different particle sizes can be accurately separated, effectively avoiding the occurrence of material mixing, improving screening accuracy, and ensuring the requirements of subsequent processing steps for iron ore particle size.

[0027] like Figure 3 As shown, in one embodiment, the screening cylinder 31 is cylindrical with open ends, and the filter holes on the screening cylinder 31 are distributed in a ring. Multiple screening cylinders 31 are interconnected to form a grading screening cylinder 3.

[0028] Iron ore is conveyed to the grading screening cylinder 3 via the conveying unit 5. Since the screening cylinder 31 is cylindrical and open at both ends, the material can smoothly enter the interior of the grading screening cylinder 3, which is composed of multiple interconnected screening cylinders 31.

[0029] When the drive unit 4 is started, it drives the grading and screening cylinder 3 to rotate around the axis. During the rotation, the iron ore will continuously roll and move as the screening cylinder 31 rotates.

[0030] During the rotation and tumbling process, iron ore of different particle sizes is subjected to the combined action of centrifugal force and its own gravity. Iron ore with a particle size smaller than the diameter of the filter hole of the current screening cylinder 31 will pass through the filter hole under the action of centrifugal force and fall into the corresponding discharge hopper 6 below the screening cylinder 31. Iron ore with a particle size larger than the diameter of the filter hole cannot pass through the filter hole and will continue to rotate with the screening cylinder 31 and move forward to the next screening cylinder 31 with a larger screen hole for further screening. In this way, the iron ore passes through multiple screening cylinders 31 in sequence, thereby achieving the classification and screening of iron ore of different particle sizes.

[0031] Because the filter holes are arranged in a ring shape, the material can come into contact with the filter holes from all directions when the screening cylinder 31 rotates, which increases the chance of the material passing through the filter holes. Compared with the screening structure where the filter holes are only distributed in a part of the area, this greatly improves the screening volume of the material per unit time.

[0032] The annularly distributed filter holes ensure that the material is uniformly screened during the screening process. No matter where the material is in the screening cylinder 31, it has the opportunity to pass through the appropriate filter holes. This avoids the problem of insufficient or excessive screening of some materials due to uneven distribution of filter holes, ensuring accurate separation of iron ore of different particle sizes and improving screening quality.

[0033] Multiple screening cylinders 31 are interconnected to form a grading screening cylinder 3, which enables the material to be screened in multiple stages in a continuous channel. This reduces the number of times the material is transferred between different equipment or screening areas, reduces the risk of secondary crushing and contamination of the material during the transfer process, and further ensures the quality of the iron ore after screening.

[0034] like Figure 2 and Figure 3 As shown, the fixing frame 32 further includes a plurality of connecting rods 321 disposed inside the screening cylinder 31, and a fixing cylinder 322 is disposed between the other ends of the plurality of connecting rods 321 on the same side.

[0035] When the drive unit 4 starts working, its power is first applied to the fixed cylinder 322. Since the fixed cylinder 322 is connected to one end of multiple connecting rods 321 on the same side, and the other end of the connecting rods 321 is fixed inside the screening cylinder 31, when the drive unit 4 drives the fixed cylinder 322 to rotate, the fixed cylinder 322 will transmit the rotational power to the screening cylinder 31 through the connecting rods 321, so that the screening cylinder 31 can rotate around its central axis.

[0036] Multiple connecting rods 321 are evenly distributed inside the screening cylinder 31 and connected to the fixed cylinder 322, forming a stable structural frame. This effectively transmits the power of the driving component 4 evenly to the screening cylinder 31, avoiding the problem of vibration or eccentric rotation of the screening cylinder 31 caused by uneven power transmission, and ensuring the smoothness and reliability of the rotation of the screening cylinder 31.

[0037] like Figure 3 , Figure 4 and Figure 5 In one embodiment, the support base 2 includes two side plates 21 disposed opposite to each other on the frame 1, and a plurality of support plates 23 are arranged sequentially between the two side plates 21. The top of the support plate 23 is provided with a groove 24 adapted to the grading screening cylinder 3, and the grading screening cylinder 3 is rotatably engaged with the plurality of grooves 24. The support base 2 also includes U-shaped seats 25 arranged in a rectangular shape at both ends of the frame 1. Rollers 22 are rotatably disposed inside the U-shaped seats 25, and the bottom of the grading screening cylinder 3 is rotatably engaged with the rollers 22.

[0038] Two side plates 21 are set opposite to each other on the frame 1, providing a stable frame foundation for the entire support structure. Multiple support plates 23 are set between the two side plates 21 in sequence to form a support plane.

[0039] The groove 24 on the top of the support plate 23 is adapted to the shape of the grading screening cylinder 3. When the grading screening cylinder 3 is placed on the support plate 23, the groove 24 can accurately accommodate the grading screening cylinder 3 and play a role in positioning and initial support. At the same time, the grading screening cylinder 3 and the groove 24 are rotatably engaged, and the grading screening cylinder 3 can rotate around its own axis within the groove 24.

[0040] Furthermore, the roller 22, rotatably mounted inside the U-shaped seat 25, rotates in conjunction with the bottom of the grading and screening cylinder 3. Specifically, during the rotation of the grading and screening cylinder 3, the roller 22 rolls along with it, reducing the friction between the grading and screening cylinder 3 and the support seat 2, thus making the rotation of the grading and screening cylinder 3 smoother. Simultaneously, the combination of the U-shaped seat 25 and the roller 22 also provides auxiliary support, sharing some of the weight of the grading and screening cylinder 3 and ensuring the reliability of the entire support structure.

[0041] like Figure 4 and Figure 5 As shown, in one embodiment, multiple support plates 23 and two side plates 21 surround each other to form multiple screening chambers 7, the screening chambers 7 being adapted to the length of the screening cylinder 31; the discharge hopper 6 is disposed at the bottom of the corresponding screening chamber 7, and one end of the discharge port of the discharge hopper 6 is inclined downward.

[0042] Multiple support plates 23 and two side plates 21 surround each other to form multiple independent screening chambers 7. The screening chambers 7 are adapted to the length of the screening cylinder 31, which can ensure that the iron ore screened from different positions of the screening cylinder 31 falls accurately into the corresponding screening chambers 7, so as to achieve effective zoning and collection of iron ore of different particle sizes.

[0043] Since the discharge hopper 6 is located at the bottom of the corresponding screening chamber 7, and one end of its discharge port is inclined downwards, iron ore of different particle sizes falling into the screening chamber 7 will slide down along the inclined surface of the discharge hopper 6 and eventually be discharged from the discharge port. The inclined design utilizes gravity to allow the iron ore to flow out naturally and smoothly without the need for additional power, thus simplifying the discharge process.

[0044] By adapting the length of multiple screening chambers 7 to the screening cylinder 31, iron ore of different particle sizes can be accurately separated into different screening chambers 7, avoiding mixing of iron ore of different particle sizes, improving the accuracy and purity of screening, and providing raw materials with more guaranteed quality for subsequent processing and use.

[0045] In addition, the iron ore is continuously rotated and screened inside the screening cylinder 31, and the screened material falls into the corresponding screening chamber 7 in a timely manner and is discharged through the discharge hopper 6, so that there will be no material accumulation or blockage, ensuring the efficient and stable operation of the screening operation.

[0046] like Figure 3 , Figure 4 and Figure 5 As shown, in one embodiment, the drive component (4) includes two mounting seats (41) arranged opposite to each other on the frame (1). The mounting seats (41) are provided with bearing seats (42). A rotating shaft (43) is rotatably arranged between the two bearing seats (42). The fixed cylinder (322) is fixedly connected to the side wall of the rotating shaft (43). A drive motor (44) and a reducer (45) are arranged on one side of the mounting seat (41). The output shaft of the drive motor (44) is connected to the input shaft of the reducer (45). A sprocket (46) is provided at one end of the rotating shaft (43) and the output shaft of the reducer (45). The diameters of the two sprockets (46) are large and small, and the two sprockets (46) are driven by a chain.

[0047] The drive motor (44) starts to run, and its output shaft transmits power to the input shaft of the reducer (45) connected to it. The function of the reducer (45) is to convert the high-speed, low-torque power output by the drive motor (44) to output low-speed, high-torque power to meet the torque requirements required for the rotation of the grading screening cylinder (3).

[0048] The sprocket (46) on the output shaft of the reducer (45) is connected to the sprocket (46) at one end of the shaft (43) via a chain. Since the two sprockets (46) have different diameters, a transmission ratio is formed. When the output shaft of the reducer (45) rotates, the sprocket (46) at one end of the shaft (43) rotates via the chain, thereby causing the shaft (43) to rotate around its axis between the two bearing seats (42). The fixed cylinder (322) is fixedly connected to the side wall of the shaft (43). When the shaft (43) rotates, it will drive the fixed cylinder (322) to rotate together, thus realizing the rotation of the entire grading screening cylinder (3), enabling it to perform grading and screening operations on iron ore.

[0049] The two mounting bases (41) provide basic support for the entire drive system. The bearing housing (42) on each mounting base (41) can support the rotating shaft (43), so that the rotating shaft (43) remains stable during rotation, reducing vibration and noise caused by shaft shaking, and improving the operational stability and reliability of the equipment.

[0050] The transmission method of sprocket (46) and chain has the advantages of high transmission efficiency, simple structure and convenient maintenance. Chain transmission can accurately transmit power and is not prone to slippage, thus ensuring the stability and reliability of power transmission.

[0051] The drive motor (44) provides initial power, while the reducer (45) makes reasonable adjustments to the power. The drive motor (44) can be selected according to the power requirements of the equipment, while the reducer (45) can convert the high-speed power of the drive motor (44) into a low-speed, high-torque power suitable for the rotation of the shaft (43) based on factors such as the rotational resistance of the grading screening cylinder (3), thereby achieving optimized power matching and improving energy utilization efficiency.

[0052] like Figure 1 and Figure 2 As shown, in one embodiment, the conveying unit 5 includes a belt conveyor 51 arranged on one side of the frame 1. One end of the belt conveyor 51 is inclined upward, and a guide plate 52 is provided at the inclined end of the belt conveyor 51. The other end of the guide plate 52 is inclined downward and extends into the grading and screening cylinder 3. A surrounding plate 521 is provided on the guide plate 52. A feeding hopper 53 is provided at the other end of the belt conveyor 51.

[0053] The iron ore to be screened is poured into the feeding hopper 53 through an external elevator. The feeding hopper 53 serves to collect and guide the iron ore, so that the iron ore can smoothly enter the belt conveyor 51.

[0054] The belt conveyor 51 starts to operate, and its conveyor belt moves continuously, conveying the iron ore in the feeding hopper 53 along the upward inclined end of the conveyor belt. Because one end of the belt conveyor 51 is inclined upward, the iron ore moves upward with the conveyor belt under the combined action of its own gravity and the friction of the conveyor belt.

[0055] When the iron ore is conveyed to the upward-inclined end of the belt conveyor 51, it slides down along the guide plate 52 set there. Specifically, the other end of the guide plate 52 is inclined downward and extends into the grading and screening cylinder 3. The iron ore slides into the grading and screening cylinder 3 along the guide plate 52 and begins the screening operation.

[0056] Meanwhile, the baffle plate 521 set on the guide plate 52 can prevent iron ore from falling from both sides of the guide plate 52 during the downward movement, ensuring that all iron ore can enter the grading and screening cylinder 3.

[0057] It should be further noted that the belt conveyor 51 in this embodiment is a stainless steel belt conveyor, and the stainless steel conveyor belt of the belt conveyor 51 is provided with multiple partitions.

[0058] The working principle of a stainless steel belt conveyor is similar to that of a conventional belt conveyor. It relies on a drive unit such as a motor and a reducer to drive the conveyor belt in continuous motion. The conveyor belt wraps around a drive drum and a return drum. When the drive drum rotates, friction drives the conveyor belt, thereby moving materials such as iron ore on the conveyor belt. The stainless steel material itself does not affect this basic principle of power transmission and material conveying; this is existing technology and will not be elaborated further here.

[0059] In the iron ore screening production environment, the conveyor may come into contact with moisture, chemicals in the ore, and some corrosive media. Stainless steel has excellent corrosion resistance, which can resist the erosion of these substances, and is not easy to rust or be damaged, thus extending the service life of the belt conveyor 51 and improving the continuity and stability of production.

[0060] In addition, the spacers are evenly distributed on the stainless steel conveyor belt and move together with the belt. When iron ore is poured into the hopper and falls onto the conveyor belt, the spacers act as barriers and dividers. The iron ore is confined within a certain area by the spacers and is conveyed to the guide plate as the conveyor belt moves.

[0061] Specifically, during the upward tilting conveyor transporting iron ore, the iron ore tends to slide downwards due to gravity. The spacers effectively block the iron ore, preventing it from sliding off the sides of the conveyor belt during transport. This ensures that the material is accurately conveyed to the guide plate and enters the grading and screening cylinder, improving the efficiency and accuracy of material transport.

[0062] like Figure 1 As shown, in one embodiment, a dust collection mechanism 8 is also included; The dust collection mechanism 8 includes a dust collection hopper 81 arranged above the grading and screening cylinder 3, a pipe 82 communicating with the dust collection hopper 81, and the other end of the pipe 82 being connected to an external cyclone dust collector.

[0063] During the iron ore grading and screening process, a large amount of dust is generated due to the collision and friction between iron ores, as well as the impact with the screen inside the grading and screening cylinder 3.

[0064] When the dust collection mechanism 8 is started, a certain negative pressure will be formed at the dust collection hopper 81. This negative pressure causes the dust in the air around the grading and screening cylinder 3 to be sucked into the dust collection hopper 81. The dust sucked into the dust collection hopper 81 enters the pipe 82 connected to it with the airflow. The pipe 82 plays the role of guiding the airflow and transporting the dust. It transports the airflow containing dust from the dust collection hopper 81 to the outside.

[0065] The other end of pipe 82 is connected to an external cyclone dust collector.

[0066] When dust-laden airflow enters the cyclone dust collector, the airflow rotates. During this rotation, dust particles are subjected to centrifugal force and thrown against the wall of the cyclone dust collector, then slide down the wall and fall into the dust collection device. The purified gas is discharged from the top of the cyclone dust collector, achieving separation of dust and gas. This is existing technology and will not be elaborated further.

[0067] The dust extraction mechanism 8 can promptly remove the dust generated during the grading and screening process, effectively reducing the dust concentration in the air around the grading and screening cylinder 3, making the air in the workplace fresher and reducing the impact of dust on the working environment.

[0068] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are 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. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0069] It should be noted that in this application, relational terms 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 "comprising," "including," or any other variations thereof 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. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0070] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A screening device for iron ore processing, characterized in that, include: A frame (1) is provided with a support base (2), and a grading screening cylinder (3) is rotatably arranged inside the support base (2). A driving component (4) is provided on the support base (2), and the driving component (4) is used to drive the grading screening cylinder (3) to rotate. A conveying unit (5) is provided at one end of the frame (1), and the conveying unit (5) is used to feed the stone into the grading screening cylinder (3). The grading screening cylinder (3) includes a plurality of screening cylinders (31) connected in sequence. The screen holes of the plurality of screening cylinders (31) increase in sequence along the length of the frame (1). A fixing frame (32) is provided on the inner side of the screening cylinder (31). The fixing frame (32) is connected to the driving component (4). The support base (2) is provided with a plurality of discharge hoppers (6) at the bottom, and the discharge hoppers (6) are located at the bottom of the corresponding screening cylinder (31).

2. The screening device for iron ore processing as described in claim 1, characterized in that: The screening cylinder (31) is cylindrical with open ends. The filter holes on the screening cylinder (31) are distributed in a ring. Multiple screening cylinders (31) are interconnected to form a grading screening cylinder (3).

3. The screening device for iron ore processing as described in claim 1, characterized in that: The fixing frame (32) includes multiple connecting rods (321) disposed inside the screening cylinder (31), and a fixing cylinder (322) is disposed between the other ends of the multiple connecting rods (321) on the same side.

4. The screening device for iron ore processing as described in claim 1, characterized in that: The support base (2) includes two side plates (21) arranged opposite to each other on the frame (1), and a plurality of support plates (23) are arranged between the two side plates (21). The top of the support plate (23) is provided with a groove (24) that is adapted to the grading screening cylinder (3). The grading screening cylinder (3) is rotatably engaged with the plurality of grooves (24). The support base (2) also includes a U-shaped base (25) arranged in a rectangle at both ends of the frame (1). A roller (22) is rotatably arranged inside the U-shaped base (25), and the bottom of the grading screening cylinder (3) is rotatably engaged with the roller (22).

5. The screening device for iron ore processing as described in claim 4, characterized in that: Multiple support plates (23) and two side plates (21) are mutually enclosed to form multiple screening chambers (7), and the length of the screening chambers (7) is adapted to the length of the screening cylinder (31); The discharge hopper (6) is located at the bottom of the corresponding screening chamber (7), and one end of the discharge port of the discharge hopper (6) is inclined downward.

6. The screening device for iron ore processing as described in claim 3, characterized in that: The drive unit (4) includes two mounting seats (41) arranged opposite to each other on the frame (1). The mounting seats (41) are provided with bearing seats (42). A rotating shaft (43) is rotatably arranged between the two bearing seats (42). The fixed cylinder (322) is fixedly connected to the side wall of the rotating shaft (43). A drive motor (44) and a reducer (45) are provided on one side of the mounting seat (41). The output shaft of the drive motor (44) is connected to the input shaft of the reducer (45). Both the shaft (43) and the output shaft of the reducer (45) are equipped with sprockets (46). The diameters of the two sprockets (46) are different, and the two sprockets (46) are driven by a chain.

7. A screening device for iron ore processing as described in claim 1, characterized in that: The conveying unit (5) includes a belt conveyor (51) arranged on one side of the frame (1). One end of the belt conveyor (51) is inclined upward. A guide plate (52) is provided at the inclined end of the belt conveyor (51). The other end of the guide plate (52) is inclined downward and extends into the grading screening cylinder (3). A surrounding plate (521) is provided on the guide plate (52). The other end of the belt conveyor (51) is equipped with a feeding hopper (53).

8. The screening device for iron ore processing as described in claim 1, characterized in that: It also includes a vacuuming mechanism (8); The dust collection mechanism (8) includes a dust collection hopper (81) arranged above the grading sieve cylinder (3), a pipe (82) communicating with the dust collection hopper (81), and the other end of the pipe (82) being connected to an external cyclone dust collector.

Images