A screen plate linkage separation structure and a screening equipment used in iron ore mining

Abstract

This invention discloses a screen plate linkage separation structure and a screening device for iron ore mining, relating to the field of mining machinery and equipment technology. It includes two opposing side plates and a screen plate linkage assembly disposed between the side plates. The screen plate linkage assembly includes multiple screen plates connected end-to-end by pins, forming an ore screening surface arranged from high to low. It also includes a front plate, a rear plate, and a bottom plate. The front and rear plates are respectively fixed to the openings formed by the two side plates, and the bottom plate is fixed to the bottom edge of the front plate, rear plate, and two side plates. The front plate, rear plate, bottom plate, and two side plates enclose a first impurity collection bin located below the ore screening surface. The lower part of the front plate has a front impurity outlet. The screening device provided by this invention relies solely on the continuous input of ore and its own gravity, improving the screening effect and enhancing the screening capacity of iron ore through a novel structural design.

Description

Technical Field

[0001] This invention relates to the field of mining machinery and equipment technology, and more specifically to a screen plate linkage separation structure and a screening equipment used in iron ore mining. Background Technology

[0002] A mine refers to an independent production and operation unit that extracts ore within a defined mining boundary. A mine mainly includes one or more mining workshops and some auxiliary workshops; most mines also include ore dressing plants. Iron is the world's earliest discovered, most widely used, and most consumed metal, accounting for approximately 95% of total metal consumption. Iron ore is mainly used in the iron and steel industry to smelt pig iron and steel with varying carbon content.

[0003] Existing iron ore beneficiation processes generally include: a primary grinding operation, a primary classification operation, a primary weak magnetic separation operation, a primary strong magnetic separation operation, a gravity separation operation, a high-frequency screening operation, and a secondary grinding and beneficiation operation. Existing technology CN109107690B discloses an iron ore beneficiation device, including a conveying mechanism, a separation mechanism, a crushing mechanism, a transport mechanism, and a separation mechanism. The separation mechanism is installed at the end of the conveying mechanism, the crushing mechanism is located at the end of the separation mechanism, the transport mechanism is located at both ends of the crushing mechanism, and the separation mechanism is installed at the end of the transport mechanism. The crushing mechanism includes a feeding component, a crushing component, a screening component, and a drive component. The screening component is located beside the separation mechanism, the crushing component is installed inside the screening component, and the feeding component and drive component are respectively installed at both ends of the screening component. This technology, by setting up a separation mechanism and a screening component, can promptly screen out waste materials in the iron ore, thereby avoiding excessive waste materials from affecting the screening speed and efficiency of the iron ore, and simplifying the iron ore beneficiation process.

[0004] The above technologies provide better ideas for iron ore screening. Therefore, those skilled in the art are focusing more on the separation and screening of iron ore. In this process, it has been found that, as disclosed in the above technologies, the separation mechanism mainly uses inclined screen plates for sliding and vibrating screening. To improve the screening effect, a corresponding vibrating motor is required. However, since iron ore is continuously fed in, it is necessary to consider how to improve the screening effect of iron ore by utilizing the original power of the ore conveying without relying on external power, while saving on the vibrating motor. This is a problem that those skilled in the art urgently need to solve. Summary of the Invention

[0005] In view of this, the present invention provides a screen plate linkage separation structure and a screening device for iron ore mining, aiming to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A screen plate linkage and separation structure includes two opposing side plates and a screen plate linkage assembly disposed between the two side plates. The screen plate linkage assembly includes multiple screen plates, each with a rotating shaft fixed along its centerline, passing through both sides. The screen plates are rotatably connected between the two side plates via the rotating shafts. The multiple screen plates are connected end-to-end by pins, forming an ore screening surface arranged from high to low. Corresponding limiting blocks are fixed on the inner walls of the two side plates, located below the connection line between adjacent screen plates. The positioning blocks allow multiple screen plates to be arranged in an alternating structure of inclined and horizontal arrangement. The first screen plate located on the ore screening surface is inclined. The limiting block located below the lower end of the inclined screen plate abuts against the screen plate. The limiting block located below the upper end of the inclined screen plate has a screen plate movement gap with the screen plate. The side of the screen plate used for connecting with other screen plates is a telescopic plate, and the telescopic direction of the telescopic plate is the route direction of the ore screening surface.

[0008] Through the above technical solution, the ore screening surface formed by the screen plate linkage separation structure provided by the present invention is composed of multiple screen plates. Due to the setting of the limiting blocks, the multiple screen plates form an alternating structure of inclined-horizontal-inclined arrangement. Each screen plate uses a rotating shaft as a fulcrum, enabling it to perform a seesaw-like swinging motion. When multiple screen plates are connected, a linked swinging motion is formed, allowing the ore screening surface formed by the screen plate linkage assembly to continuously switch between inclined and horizontal states in segments. That is, under the action of ore gravity, it can move downwards along the ore screening surface, and the downward speed can be reduced due to the switching of the inclined state. Simultaneously, the continuous seesaw motion can vibrate the ore, improving the screening effect. The structure of the present invention does not require external power; it only relies on the continuous input of ore and the gravity effect of the ore itself. While saving energy, the new structural design alone improves the screening effect, making it more valuable for widespread application.

[0009] Preferably, in the above-mentioned screen plate linkage separation structure, a pull rod is hinged to the lower end of the inclined screen plate. A through hole corresponding to the pull rod is provided on the limiting block, through which the pull rod passes. An anti-detachment head is fixed to the bottom end of the pull rod, and a first spring is sleeved on the pull rod, pressing against the limiting block and the anti-detachment head. To improve the linkage effect of the screen plates, the present invention also provides an elastic pull-reset structure that cooperates with the pull rod and the first spring. That is, when the inclined screen plate is pressed to a horizontal state, the elastic force provided by the first spring can assist in pulling the horizontal screen plate back to its inclined state. This better meets the needs of ore movement and prevents difficulties in ore movement caused by the screen plate always being in a horizontal state.

[0010] It should be noted that the structural feature of this invention lies in its ability to reduce the speed of ore conveying through the linkage of multiple screen plates. Traditional ore conveying systems use a sloping structure. Generally, before achieving a good screening effect, the ore has already slid from the highest point of the slope to the lowest point, which is detrimental to ore screening. Therefore, to overcome this problem, the slope of the conveying surface can be set to be relatively gentle. However, this leads to a slower conveying speed, and even a gentler slope can result in insufficient gravity, failing to achieve the desired conveying effect. Therefore, in general, a vibrating motor can be installed on a relatively gentle conveying surface, utilizing the vibration effect of the motor to both ensure conveying and reduce speed. However, this invention aims to eliminate the vibrating motor, relying solely on structural design to reduce the speed of ore conveying while preventing jamming. Therefore, the effect achieved by this invention is:

[0011] ① Because multiple screen plates are linked, horizontally arranged screen plates can always be present, which can reduce the conveying speed. However, because inclined screen plates can always be present, it will not cause jamming or affect the conveying.

[0012] ② In order to ensure that this horizontal and tilted state can always be effective, a tie rod and a first spring structure were added to help the state switching action and keep the operation effective at all times;

[0013] ③ Since multiple screen plates are always in linkage, they are actually constantly vibrating, which can achieve a similar vibrating screening effect with a body vibration motor. Its power only needs to rely on the original power of the ore falling and the gravitational potential energy accumulated during the falling process, making the structure more ingenious.

[0014] Preferably, in the above-mentioned screen plate linkage separation structure, when the horizontally arranged screen plate tilts and abuts against the limiting block below it, the tilted screen plate is driven to a horizontal position. The arrangement of the limiting block is designed according to the action requirements of multiple screen plates, aiming to ensure that each screen plate can switch between tilted and horizontal states without deviation from its action.

[0015] Preferably, in the above-mentioned sieve plate linkage separation structure, the telescopic plate includes a sieve plate base and a telescopic plate base; the edge of the telescopic plate base slidably engages with the edge of the sieve plate base, the sieve plate base has grooves on both sides, and the telescopic plate base has limiting pins on both sides that are slidably connected to the grooves. The sieve plate base and the telescopic plate base enable the sieve plate to extend and retract, thus better meeting the coordination requirements of the state switching process and preventing deformation or interference caused by the rigid plate structure.

[0016] Preferably, in the above-mentioned sieve plate linkage separation structure, sieve holes are formed on the surface of the sieve plate. The sieve holes can be designed according to requirements; sieve holes are a conventional structure of sieve plates and will not be described in detail here.

[0017] Preferably, in the above-mentioned sieve plate linkage separation structure, the gap between the two side edges of the sieve plate and the side plate is not greater than the diameter of the sieve holes. The two side edges of the sieve plate do not need to be completely fitted with the side plate; as long as the gap is not greater than the diameter of the sieve holes, it can still achieve the function of sieving.

[0018] The present invention also provides a screening device for iron ore mining, including the above-mentioned screen plate linkage separation structure; it also includes a front end plate, a rear end plate, and a bottom plate; the front end plate and the rear end plate are respectively fixed at the two openings formed by the two side plates, and the bottom plate is fixed to the bottom edge of the front end plate, the rear end plate, and the two side plates; the front end plate, the rear end plate, the bottom plate, and the two side plates enclose and form a first impurity collection bin located below the ore screening passage surface; the lower part of the front end plate has a front impurity outlet.

[0019] Through the above technical solution, the present invention utilizes the above screen plate linkage separation structure to combine the front end plate, the rear end plate and the bottom plate to form a box structure, and forms a first impurity collection chamber inside the box, which can collect the impurities screened by the screen plate linkage separation structure and discharge them through the front impurity outlet. The screening equipment provided by the present invention does not require other power assistance and can improve the screening capacity of iron ore.

[0020] Preferably, the screening equipment used in the above-mentioned iron ore mining also includes a vibrating screening box and an inclined transition frame;

[0021] The vibrating screen box has a vibrating screen inlet on the upper part of one side wall, and a vibrating screen outlet on the upper part of the other side wall, which is lower than the vibrating screen inlet. A rear impurity outlet is located at the bottom. An inclined vibrating screen plate is installed inside the vibrating screen box, with its two ends corresponding to the vibrating screen inlet and the vibrating screen outlet, respectively. A lower elastic support assembly supporting the vibrating screen plate is installed inside the vibrating screen box. A second impurity collection bin is formed below the vibrating screen plate.

[0022] The inclined transition frame is installed between the rear end plate and the vibrating screening box, and the two ends of the top slope of the inclined transition frame are respectively connected to the ore screening passage surface and the vibrating screening feed port.

[0023] To improve screening capabilities, this invention further provides a vibrating screening box in the downstream process of the screen plate linkage separation structure. The vibration of the vibrating screen plate is used to achieve further screening and separation of iron ore, which can further improve the screening effect.

[0024] Preferably, in the screening equipment used for iron ore extraction described above, an impact plate is connected to the upper part of the vibrating screen box via an upper elastic support assembly, forming an ore screening channel between the impact plate and the vibrating screen plate. To further improve the screening effect, this invention further utilizes an upper elastic support assembly to set an impact plate above the vibrating screen plate, combining the vibrating screen plate and the impact plate to form a set of upper and lower cooperating elastic structures. This allows the ore to collide and move forward within the ore screening channel, resulting in a better screening effect.

[0025] Preferably, in the screening equipment used in the above-mentioned iron ore mining, the rear end plate, the inclined transition frame, and the vibrating screening box are fastened together by bolts to form an integrated structure. This allows the three parts to be easily and quickly connected, resulting in stronger overall integrity.

[0026] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a screening device for iron ore mining, which has the following beneficial effects:

[0027] 1. The structure of the present invention does not require external power and can be achieved solely by the continuous input of ore and the gravity effect of the ore itself. While saving energy, the screening effect is improved simply by designing a new structure, which has better promotional value.

[0028] 2. The present invention also provides an elastic pull-reset structure in cooperation with a pull rod and spring. That is, when the inclined screen plate is pressed to a horizontal state, the elastic force provided by the first spring can assist in pulling the horizontal screen plate to reset it to the inclined state. This can better meet the movement of the ore and prevent the ore from running into difficulties due to the screen plate always being in a horizontal state.

[0029] 3. The present invention utilizes the above-mentioned screen plate linkage separation structure to combine the front end plate, the rear end plate and the bottom plate to form a box structure, and forms a first impurity collection chamber inside the box, which can collect the impurities screened by the screen plate linkage separation structure and discharge them through the front impurity outlet. The screening equipment provided by the present invention does not require other power assistance and can improve the screening capacity of iron ore.

[0030] 4. In order to improve the screening capability, the present invention further provides a vibrating screening box in the post-process of the screen plate linkage separation structure. The vibration of the vibrating screen plate is used to achieve further screening and separation of iron ore. At the same time, an impact plate is set above the vibrating screen plate using an upper elastic support component. The vibrating screen plate and the impact plate are combined to form a set of upper and lower elastic structures, which can make the ore collide and move forward in the ore screening channel, resulting in better screening effect. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0032] Figure 1 The attached figure is a schematic diagram of the sieve plate linkage separation structure provided by the present invention;

[0033] Figure 2 The attached figure is an internal front view of the sieve plate linkage separation structure provided by the present invention;

[0034] Figure 3 The attached figure is provided by the present invention. Figure 2 A magnified view of part A in the middle;

[0035] Figure 4 The attached figure shows the sieve plate linkage separation structure provided by the present invention relative to... Figure 2 A diagram illustrating the action state;

[0036] Figure 5 The attached figure is a schematic diagram of the sieve plate provided by the present invention;

[0037] Figure 6 The attached figure is a schematic diagram of the screening device provided by the present invention;

[0038] Figure 7 The attached figure is an internal front view of the screening device provided by the present invention;

[0039] Figure 8 The attached figure is a top view of the internal structure of the screening device provided by the present invention;

[0040] Figure 9 The attached figure is provided by the present invention. Figure 8 A magnified view of part B in the middle;

[0041] Figure 10 The attached figure is a bottom view of the internal structure of the screening device provided by the present invention.

[0042] Figure 11 The attached figure is provided by the present invention. Figure 10 A magnified view of part C in the middle.

[0043] 1-Side panel;

[0044] 2-Front-end board; 21-Front impurity outlet;

[0045] 3-Back end board;

[0046] 4-Base plate;

[0047] 5-Screen plate linkage assembly; 51-Screen plate; 511-Telescopic plate; 5111-Screen plate base; 51111-Slide groove; 5112-Telescopic plate base; 51121-Limit pin; 512-Screen hole; 52-Rotating shaft; 53-Ore screening passage surface; 54-Limit block; 55-Screen plate movement gap; 56-Pull rod; 561-Anti-detachment head; 57-First spring;

[0048] 6-Vibrating screen box; 61-Vibrating screen feed inlet; 62-Vibrating screen discharge outlet; 63-Rear impurity outlet; 64-Vibrating screen plate; 65-Lower elastic support assembly; 651-Lower support beam; 652-Upright rod; 653-Second spring; 654-Sleeve; 655-Sloping steel plate; 656-Moving port; 657-Connecting rod; 658-Blade; 66-Second impurity collection bin; 67-Upper elastic support assembly; 671-Upper support beam; 672-Guide rod; 673-Guide rod head; 674-Third spring; 68-Impact plate; 681-Hard rubber protrusion; 69-Ore screening channel;

[0049] 7-Slope transition frame;

[0050] 8-First impurity collection bin. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] See appendix Figure 6 and attached Figure 7 The present invention discloses a screening device for iron ore mining, comprising: a screen plate linkage separation structure, a spring vibrating screening box 6 and an inclined transition frame 7;

[0053] See appendix Figure 1 To be continued Figure 3The screen plate linkage separation structure includes two opposing side plates 1 and a screen plate linkage assembly 5 disposed between the two side plates 1. The screen plate linkage assembly 5 includes multiple screen plates 51, each of which has a rotating shaft 52 fixed along its centerline, passing through its two edges. The screen plates 51 are rotatably connected between the two side plates 1 via the rotating shafts 52. The multiple screen plates 51 are connected end to end by pins, forming an ore screening passage surface 53 arranged from high to low. Corresponding limiting blocks 54 are fixed on the inner sidewalls of the two side plates 1. The limiting blocks 54 are located below the connecting line of the two adjacent screen plates 51, limiting... The position block 54 is set so that multiple screen plates 51 are arranged in an alternating structure of inclined and horizontal arrangement. The first screen plate 51 located on the ore screening passage surface 53 is inclined. The limiting block 54 located below the lower end of the inclined screen plate 51 abuts against the screen plate 51. The limiting block 54 located below the upper end of the inclined screen plate 51 has a screen plate movement gap 55 between it and the screen plate 51. The side of the screen plate 51 used to connect with other screen plates 51 is a telescopic plate 511, and the telescopic direction of the telescopic plate 511 is the route direction of the ore screening passage surface 53.

[0054] In this embodiment, to meet the reset requirement of the sieve plate 51, please refer to the attached document. Figure 3 A pull rod 56 is hinged to the lower end of the inclined screen plate 51. A through hole corresponding to the pull rod 56 is provided on the limiting block 54. The pull rod 56 passes through the through hole, and an anti-detachment head 561 is fixed at the bottom end of the pull rod 56. A first spring 57 is sleeved on the pull rod 56 and is pressed between the limiting block 54 and the anti-detachment head 561.

[0055] Taking this embodiment as an example, the number of sieve plates 51 is set to 3, such as Figure 2 As shown, the first and third screen plates 51 are arranged at an angle, while the middle screen plate 51 is arranged horizontally. With this design, only the limit blocks 54 at the ends of the first and third screen plates 51 need to be equipped with pull rods 56, and the middle limit block 54 does not need to be equipped with pull rods 56, which can meet the auxiliary requirements for resetting.

[0056] See appendix Figure 2 and attached Figure 4 , Figure 2 The initial state of the screen plate linkage assembly 5 is as follows: The elastic force provided by the first spring 57 supports the space between the limiting block 54 and the anti-detachment head 561, pulling the ends of the first and third screen plates 51 downwards, causing them to tilt, while the middle screen plate 51 is horizontally arranged. When iron ore falls onto the front end of the first screen plate 51, due to the lever principle, the front end of the first screen plate 51 is pressed down, and the end tilts up. The first screen plate 51 will then drive the second screen plate 51 to move in tandem, and similarly, the second screen plate 51 will drive the third screen plate 51 to move in tandem, thus switching the overall state. Figure 4As shown. This state transition allows the iron ore, which was originally sliding down at an angle, to be straightened and brought to a stop, while the iron ore that was originally stopped will slide down, slowing its movement. For example... Figure 4 In the indicated state, since the originally inclined screen plate 51 is pulled to the horizontal, the pull rod 56 is driven to move upward, causing the first spring 57 to be compressed and accumulate elastic force. Next, as the iron ore continues to be input and accumulate, it gradually moves backward under the accumulation, pressing down on the end of the screen plate 51, causing the horizontal screen plate 51 to be pressed down again. Simultaneously, under the action of the first spring 57, the horizontal screen plate 51 will also be driven to tilt, and the screen plate linkage assembly 5 will return to its original position. Figure 2 This process repeats itself, and due to the continuous input of iron ore, the screen plate linkage assembly 5 is in a state of flux. Figure 2 and Figure 4 The system switches between states, which can both delay the passage time of iron ore and serve as a reciprocating vibrating screen.

[0057] It should be noted that, due to the presence of the first spring 57, the first and third screen plates 51 always possess a force that restores them to their tilted state, thus ensuring the movement of the iron ore. During this process, each time iron ore is fed into the inlet, the lever principle is used to level the tilted first screen plate 51. However, due to the presence of the first spring 57 and the effect of inertia, it is quickly pulled back to its tilted state. It is important to note that the linkage of the multiple screen plates 51 relies not only on the action of the first spring 57 but also on the inertia during movement, allowing them to restore their state and thus effectively ensuring the smooth operation of the iron ore. For example, when iron ore falls onto the first screen plate 51, the first screen plate 51 is pulled to a horizontal position. At the moment of leveling, there is also a corresponding inertia that causes it to return to its original position. At the same time, under the pulling force of the first spring 57, it returns to its tilted position. At this time, the iron ore begins to slide down the tilted first screen plate 51 and then slides onto the second screen plate 51. Then, subsequent iron ore falls onto the first screen plate 51 again, and the first screen plate 51 is pulled to a horizontal position. At the same time, the second screen plate 51 is pulled to a tilted position, and the iron ore on the second screen plate 51 can continue to slide down. Then the first screen plate 51 is pulled back to a tilted position, and the second screen plate 51 becomes horizontal again... As iron ore is continuously input, the state is constantly switched, and the iron ore can continue to move forward intermittently.

[0058] Since the iron ore is continuously fed in and the first spring 57 is always in action, the multiple screen plates 51 are always in motion, so the iron ore can also keep moving.

[0059] In this embodiment, the limiting block 54 mainly serves to limit the movement of the screen plate 51. When the horizontally arranged screen plate 51 tilts and comes into contact with the limiting block 54 below it, the tilted screen plate 51 is driven to a horizontally arranged state.

[0060] Furthermore, since multiple screen plates 51 are connected together, there will be some deformation of the plate body during operation. Therefore, the side of the screen plate 51 used for connecting with other screen plates 51 is designed as a telescopic plate 511, see [reference]. Figure 3 and Figure 5 The telescopic plate 511 includes a sieve plate base 5111 and a telescopic plate base 5112. The edge of the telescopic plate base 5112 is slidably inserted into the edge of the sieve plate base 5111. The sieve plate base 5111 has sliding grooves 51111 on both sides, and the telescopic plate base 5112 has limiting pins 51121 on both sides that are slidably connected to the sliding grooves 51111. The telescopic plate base 5112 can telescopically extend relative to the sieve plate base 5111, and the extension stroke is the stroke of the limiting pins 51121 within the sliding grooves 51111.

[0061] In this embodiment, in order to prevent particles from getting stuck in the chute 51111, a cover can be fixed to the outside of the chute 51111 to seal the limiting pin 51121 and the chute 51111 structure inside the cover.

[0062] To further optimize the above technical solution, sieve holes 512 are provided on the surface of the sieve plate 51.

[0063] To further optimize the above technical solution, the gap between the two sides of the sieve plate 51 and the side plate 1 shall not be greater than the diameter of the sieve hole 512.

[0064] In order to make the screen plate linkage separation structure form a complete device structure, it also includes a front plate 2, a rear plate 3 and a bottom plate 4; the front plate 2 and the rear plate 3 are respectively fixed at the two openings formed by the two side plates 1, and the bottom plate 4 is fixed at the bottom edge of the front plate 2, the rear plate 3 and the two side plates 1. The front plate 2, the rear plate 3, the bottom plate 4 and the two side plates 1 enclose and form the first impurity collection bin 8 located below the ore screening passage surface 53; the lower part of the front plate 2 has a front impurity outlet 21.

[0065] To further improve the screening effect of impurities in iron ore, this embodiment also adds a spring-vibrating screening box 6 and an inclined transition frame 7 in the subsequent process of the screen plate linkage separation structure.

[0066] The vibrating screen box 6 has a vibrating screen feed inlet 61 on the upper part of one side wall, and a vibrating screen discharge outlet 62 on the upper part of the other side wall, which is lower than the vibrating screen feed inlet 61. It also has a rear impurity outlet 63 at the bottom. The vibrating screen box 6 is equipped with an inclined vibrating screen plate 64, with its two ends corresponding to the vibrating screen feed inlet 61 and the vibrating screen discharge outlet 62, respectively. The vibrating screen box 6 is equipped with a lower elastic support assembly 65 that supports the vibrating screen plate 64. A second impurity collection bin 66 is formed below the vibrating screen plate 64.

[0067] The inclined transition frame 7 is located between the rear end plate 3 and the vibrating screening box 6. The top slope of the inclined transition frame 7 is connected to the ore screening passage surface 53 and the vibrating screening feed inlet 61 at both ends.

[0068] In this embodiment, the screen plate linkage separation structure and the spring vibrating screening box 6 serve as screening functions, while the inclined transition frame 7 serves as a transition connection, aiming to send the iron ore delivered by the screen plate linkage separation structure to the spring vibrating screening box 6.

[0069] To further optimize the above technical solution, the upper part of the vibrating screening box 6 is connected to an impact plate 68 through an upper elastic support component 67, and an ore screening channel 69 is formed between the impact plate 68 and the vibrating screen plate 64.

[0070] In this embodiment, the rear end plate 3, the inclined transition frame 7, and the vibrating screening box 6 are fastened together by bolts to form an integral structure. In other embodiments, welding or other methods can also be used for connection.

[0071] like Figures 7 to 9 As shown, the lower elastic support assembly 65 includes two lower support beams 651 arranged parallel to each other on both sides below the vibrating screen plate 64. Multiple uprights 652 are fixed to each of the two lower support beams 651. The top of each upright 652 is fixed to the vibrating screen plate 64, and the bottom of each upright 652 passes through the lower support beam and is fitted with a second spring 653. Multiple sleeves 654 corresponding to the bottom of the uprights 652 are fixed to the inner bottom surface of the vibrating screening box 6. The bottom of each upright 652 slides into the sleeve 654, and the second spring 653 is pressed against the top edge of the sleeve 654 and the lower support beam 651. When iron ore falls onto the vibrating screen plate 64, the downward pressure of gravity on the second spring 653 causes the frame structure formed by the uprights 652 and the lower support beams 651 to vibrate up and down under the guidance of the sleeves 654, thereby achieving screening.

[0072] Furthermore, an inverted L-shaped frame can be installed on the inner bottom surface of the vibrating screening box 6 to limit the upward height of the lower support beam 651, so that the upright 652 will not come out of the sleeve 654.

[0073] Furthermore, the two sets of lower support beams 654 and uprights 652 are respectively located on the lower sides of the vibrating screening box 6. To prevent dust particles from clogging the box, baffles can be installed to block them. The baffles need to have through holes for the uprights 652 to pass through, and sealing rings can be installed in the through holes. The uprights 652 can move up and down through the through holes, and the spring sleeve and other structures can be hidden inside the baffles. This is not the focus of the present invention and will not be described in detail here.

[0074] To achieve a more favorable vibration effect, in this embodiment, the two lower support beams 651 extend further towards the rear end plate 3, passing sequentially through the ramp transition frame 7 and the rear end plate 3, and entering the first impurity collection bin 8. Then, ramp steel plates 655 are fixed to the ends of the two lower support beams 651. The lower end of the ramp steel plate 655 abuts against the bottom edge of the front impurity outlet 21, but does not require further fixing. This allows the gravity of the impurities falling from the first impurity collection bin 8 to impact the ramp steel plate 655, thereby vibrating the frame structure formed by the uprights 652 and the lower support beams 651 while simultaneously removing impurities, further enhancing the vibration effect.

[0075] To meet the movement requirements, the plate through which the lower support beam 651 passes has an opening 656 for the up and down movement of the lower support beam 651.

[0076] Since the vibrating screen plate 64 relies solely on its own vibration, its slope design should be greater than that of the screen plate linkage assembly 5. For example, when the inclination angle of the screen plate linkage assembly 5 is 25°, the inclination angle of the vibrating screen plate 64 should be designed to be 35°.

[0077] Similarly, the shock-absorbing mesh plate 64 can also be designed as a whole plate with horizontal and inclined staggered arrangements.

[0078] Furthermore, a connecting rod 657 can be fixed between the two sets of uprights 652, and multiple blades 658 can be fixed on the connecting rod 657. In this way, the impurities screened out by the vibrating screen plate 64 can continuously impact the blades 658, which can also increase the vibration.

[0079] To ensure smooth operation of the iron ore, a vibration motor can be installed on the bottom surface of the vibrating mesh plate 64, and the vibration of the motor can be controlled intermittently to prevent blockage.

[0080] like Figure 10 and Figure 11As shown, the upper elastic support assembly 67 includes two parallel upper support beams 671 fixed on both sides above the vibrating screen plate 64. Multiple guide rods 672 are threaded through each upper support beam 671. A guide rod head 673 is fixed to the top of each guide rod 672, and an impact plate 68 is fixed to the bottom of each guide rod 672. A third spring 674 is sleeved on each guide rod 672, pressing against the guide rod head 673 and the upper support beam 671. When the impact plate 68 is struck, it can move up and down. Combining the vibrating screen plate 64 and the impact plate 68 forms a coordinated elastic structure, allowing the ore to move forward and backward within the ore screening channel 69, resulting in better screening performance.

[0081] To further enhance the impact effect, multiple hard rubber protrusions 681 can be fixed on the impact plate 68 to improve the impact vibration effect. Vibration helps the ore remove its own impurities.

[0082] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0083] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. 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 the invention. Therefore, the invention 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 disclosed herein.

Claims

1. A sieve plate linkage separation structure, comprising two opposite side plates (1) and a sieve plate linkage assembly (5) arranged between the two side plates (1); characterized in that, The screen linkage assembly (5) comprises a plurality of screens (51), the surface centerline of each of the screens (51) is fixed with a rotating shaft (52) penetrating through both side edges, the screens (51) are rotatably connected between the two side plates (1) through the rotating shaft (52), the screens (51) are sequentially connected through pin shafts and form ore screening surfaces (53) arranged from high to low, the inner side walls of the two side plates (1) are fixed with corresponding limit blocks (54), the limit blocks (54) are located below the connecting lines of the adjacent two screens (51), the limit blocks (54) are arranged to sequentially form an alternating arrangement structure of the inclined arrangement and the horizontal arrangement of the screens (51), the first screen (51) located at the ore screening surface (53) is arranged in an inclined manner, the limit block (54) below the low end side of the screen (51) arranged in an inclined manner abuts against the screen (51), and the limit block (54) below the high end side of the screen (51) arranged in an inclined manner has a screen action gap (55) with the screen (51); the side plate surface of the screen (51) for connecting other screens (51) is a telescopic plate (511), the telescopic direction of the telescopic plate (511) is the route direction of the ore screening surface (53), the low end side of the screen (51) arranged in an inclined manner is hingedly connected with a pull rod (56), the limit block (54) is provided with a through hole corresponding to the pull rod (56), the pull rod (56) penetrates through the through hole, the bottom end of the pull rod (56) is fixed with an anti-disengagement head (561), a first spring (57) is sleeved on the pull rod (56), and the first spring (57) is tightly arranged between the limit block (54) and the anti-disengagement head (561); the telescopic plate (511) comprises a screen base body (5111) and a telescopic plate base body (5112), the edge of the telescopic plate base body (5112) is slidably inserted into the edge of the screen base body (5111), both sides of the screen base body (5111) are provided with sliding grooves (51111), and both sides of the telescopic plate base body (5112) are provided with limit pins (51121) slidably connected with the sliding grooves (51111).

2. The sieve plate linkage separation structure according to claim 1, characterized in that, When the screen (51) arranged in a horizontal manner is tilted and abuts against the limit block (54) below, the screen (51) arranged in an inclined manner is driven to be arranged in a horizontal manner.

3. The linkage separation structure of claim 1, wherein, The screen (51) is provided with a screen hole (512) on the plate surface.

4. The linkage separation structure of claim 3, wherein, The gap between the two side edges of the screen (51) and the side plate (1) is not greater than the caliber of the screen hole (512).

5. A screening apparatus for use in the mining of iron ore, characterised in that, The screen plate linkage separation structure comprises a front end plate (2), a rear end plate (3), a bottom plate (4), and two side plates (1).

6. A screening apparatus for use in the mining of iron ore according to claim 5, characterised in that, The front end plate (2) and the rear end plate (3) are respectively fixed at the two ends of the two side plates (1), and the bottom plate (4) is fixed at the bottom edges of the front end plate (2), the rear end plate (3), and the two side plates (1). The front end plate (2) has a front impurity outlet (21) at the lower part. The bouncer screen box (6) and the slope transition frame (7) are further included.

7. A screening apparatus for use in the mining of iron ore according to claim 6, characterised in that, The bouncer screen box (6) has a bouncer screen feeding port (61) at the upper part of one side wall, a bouncer screen discharging port (62) lower than the bouncer screen feeding port (61) at the upper part of the other side wall, and a rear impurity outlet (63) at the lower part.

8. A screening apparatus for use in the mining of iron ore according to claim 6, characterised in that, The bouncer screen box (6) is provided with an inclined bouncer screen plate (64) inside. The slope transition frame (7) is arranged between the rear end plate (3) and the bouncer screen box (6). The top slope surface of the slope transition frame (7) is connected with the ore screen passing surface (53) and the bouncer screen feeding port (61) respectively. The upper part of the bouncer screen box (6) is connected with an impact plate (68) through an upper elastic support assembly (67). The impact plate (68) and the bouncer screen plate (64) form an ore screen passing channel (69). The rear end plate (3), the slope transition frame (7), and the bouncer screen box (6) are connected through bolts to form an integrated structure.

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