Screening system for production and detection of fine iron powder

Abstract

The invention belongs to the technical field of detection, and particularly relates to a screening system for fine iron powder production detection, which comprises a screening box and a detection box, and a screening assembly and a dredging assembly are arranged in the screening box. According to the screening device, the second screening cylinder is rotated, so that the second screening holes or the third screening holes in the second screening cylinder are overlapped with the first screening holes; when a first screening hole, a second screening hole and a third screening hole in the first screening cylinder and the second screening cylinder rotate into a closed space formed by a partition piece, a sealing piece and a screening box, a reciprocating motion piece pressurizes air in the closed space formed by the partition piece, the sealing piece and the screening box; compressed air penetrates through the first screening holes and the second screening holes or the third screening holes overlapped with the first screening holes from the upper portions of the first screening barrel and the second screening barrel to enter the first screening barrel and the second screening barrel and is exhausted from the exhaust part.

Description

Technical Field

[0001] This invention belongs to the field of detection technology, and specifically relates to a screening system for detecting iron concentrate production. Background Technology

[0002] In the production of iron concentrate, the detection of iron concentrate particle size is a critical quality control step. If the particle size distribution of iron concentrate does not meet the requirements, it will directly affect the stability of the subsequent sintering process and the quality of the sintered ore. At present, the commonly used detection method mainly relies on standard test sieves for analysis. This process usually involves mechanical vibration or manual shaking to make the sample particles pass through a series of sieves with different apertures in sequence, thereby separating the powder into several grades according to particle size. After sieving, the weight of the powder remaining on each sieve surface is weighed, and the mass percentage of each particle size range is calculated accordingly to obtain a quantitative result of the particle size distribution.

[0003] A search revealed that Chinese patent application number 202120202189.8 discloses an iron concentrate screening device, relating to the field of iron concentrate processing equipment. The device includes a screening cylinder with several screening holes on its sidewalls, and a housing. One side wall of the housing has a receiving interface, and the bottom wall of the housing away from the receiving interface has a first discharge port and a second discharge port. The first discharge port is located on the side of the second discharge port near the receiving interface. One end face of the screening cylinder has an inlet, and the other end face has an outlet. The inlet is located at the end of the housing near the receiving interface, and the outlet is located directly above the second discharge port. A drive motor is detachably connected to the screening cylinder to drive it to rotate around its own axis. This application claims to facilitate the screening of iron concentrate with various particle sizes, but it still has the following drawbacks: 1) During the screening process, the screening cylinder is changed to screen iron concentrate of different particle sizes. However, in actual application, changing the screening cylinder is a cumbersome step. In addition, there are many types of iron concentrate particles, and changing the screening cylinder for different sizes of iron concentrate leads to low screening efficiency. 2) During the screening process, the different particle sizes of iron concentrate can easily clog the screening holes on the screening cylinder, which can seriously affect the screening quality of iron concentrate. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a screening system for iron concentrate production and testing. By rotating the second screening cylinder, the second or third screening hole on the second screening cylinder is adjusted to overlap with the first screening hole, thereby screening out iron concentrate of different particle sizes. When the first and second screening cylinders rotate, the first, second, and third screening holes on the first and second screening cylinders rotate into the sealed space formed by the separator, the sealing element, and the screening box. The reciprocating motion component pressurizes the air in the sealed space formed by the separator, the sealing element, and the screening box. The compressed air passes through the first screening hole and the second or third screening hole superimposed on the first screening hole from above the first and second screening cylinders and enters the interior of the first and second screening cylinders, and is discharged from the exhaust component.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A screening system for testing iron concentrate production includes a screening box and a testing box. The screening box is located on top of the testing box and is connected to the testing box. An electronic scale and a guide are installed inside the testing box. The guide is located at the connection between the screening box and the testing box and is used to guide the screened iron concentrate. A screening component and a dredging component that cooperate with the screening component are installed inside the screening box. The screening assembly includes a first screening cylinder, a second screening cylinder, and a driving component. The second screening cylinder is located inside the first screening cylinder, and the outer wall of the second screening cylinder is in contact with the inner wall of the first screening cylinder. The first screening cylinder and the second screening cylinder can rotate relative to each other. A plurality of first screening holes are evenly opened on the first screening cylinder, and a plurality of second screening holes and third screening holes identical to the first screening holes are opened on the second screening cylinder. The second screening cylinder can be rotated to adjust the overlap between the second screening holes or the third screening holes and the first screening holes. The driving component is located on the top of the detection box and is used to drive the first screening cylinder and the second screening cylinder to rotate. The unblocking assembly includes a reciprocating motion component, an air inlet component, an air outlet component, a separator component, and a sealing component. The separator components are symmetrically arranged on both sides of the center line of the first screening cylinder and are installed on the inner wall of the screening box. The separator components are in contact with the outer wall of the first screening cylinder and can rotate relative to the first screening cylinder. The sealing component is located inside the second screening cylinder and is in contact with the inner wall of the second screening cylinder. The second screening cylinder can rotate relative to the sealing component. A sealed space is formed between the separator component, the sealing component, and the inner wall of the screening box. The reciprocating motion component is located on the outside of the screening box and is used to pressurize the air in the sealed space. The air inlet component is located at the top of the screening box and is connected to the screening box. The air outlet component is located on one side of the screening box, above the sealing component, and is connected to the screening box. As the first and second screening cylinders rotate, when the first, second, and third screening holes on the first and second screening cylinders rotate into the sealed space formed by the separator, the seal, and the screening box, the reciprocating motion component repeatedly pressurizes the air in the sealed space formed by the separator, the seal, and the screening box. The compressed air passes through the first screening hole and the second or third screening hole superimposed on the first screening hole from above the first and second screening cylinders and enters the interior of the first and second screening cylinders, and is discharged from the exhaust component.

[0006] Preferably, the separator includes a separator plate and a first sealing plate. The separator plates are symmetrically arranged on both sides of the first screening cylinder and the second screening cylinder. The separator plates are inclined. One end of the separator plate is connected to the inner wall of the screening box, and the other end of the separator plate is in contact with the outer wall of the first screening cylinder. The first sealing plate is symmetrically arranged on both sides of the separator plate and is located between the inner walls of the first screening cylinder and the screening box. The first sealing plate is in contact with the outer wall of the first screening cylinder. The sealing element includes a base plate, second sealing plates disposed on both sides of the base plate, and inclined plates located at both ends of the base plate. The inclined plates have the same inclination angle as the partition plates. The second sealing plates are in contact with the inner wall of the second screening cylinder and have clearance grooves on the side plates near the fixed shaft. The base plate is fixedly installed at the end of the fixed shaft. A sealed space is formed between the partition, the sealing element, and the inner wall of the screening box. This ensures that when the reciprocating moving part compresses the air in the sealed space, the compressed air will pass through the first screening hole and the third or second screening hole that cooperates with the first screening hole in the sealed space, thereby achieving the purpose of unblocking the first screening hole and the third or second screening hole that cooperates with the first screening hole.

[0007] Preferably, the reciprocating motion component includes a support, a motor, a piston cylinder, a piston head, a connecting pipe, a piston rod, and a lifting rod. The support is disposed on one side of the screening box, the motor is fixedly mounted on the support, and a rotating arm is disposed on the output shaft of the motor. The piston cylinders are symmetrically disposed on both sides of the screening box and are fixedly mounted on the screening box. The piston head is disposed inside the piston cylinder, the piston rod is mounted on the piston head, and the piston rod extends to the bottom of the piston cylinder. The two ends of the connecting pipe are respectively connected to the piston cylinder and the screening box. A connecting rod is disposed on the piston rod, and the two ends of the lifting rod... The ends are connected to the connecting rods on the piston rods on both sides of the screening box. A strip hole is opened in the middle of the lifting rod, and a slider is set in the strip hole. The end of the rotating arm is rotatably mounted on the slider. The reciprocating motion component can reciprocate to compress the air in the sealed space formed between the partition, the sealing component and the inner wall of the screening box, ensuring that the compressed air passes through the first screening hole and the third or second screening hole that cooperates with the first screening hole in the sealed space, and is finally discharged from the exhaust component, thus achieving the purpose of the first screening hole and the third or second screening hole that cooperates with the first screening hole.

[0008] Preferably, the air intake component includes an air intake cylinder, a filter cylinder, a first spring, a first sealing plate, and a first sliding rod. The air intake cylinder is located on the top of the screening box and is connected to the screening box. A first mounting rod is provided inside the air intake cylinder. The filter cylinder is sleeved on the air intake cylinder. The two ends of the first sliding rod are respectively connected to the filter cylinder and the first sealing plate. The first spring is sleeved on the first sliding rod and is located between the first mounting rod and the filter cylinder. The air intake component can deliver air to the space between the separator, the seal, and the inner wall of the screening box to form a sealed space, ensuring that the air in the sealed space is always sufficient. This ensures that the air has sufficient impact force to clear the first screening hole and the third or second screening hole that cooperates with the first screening hole during the subsequent air compression process.

[0009] Preferably, the venting component includes an venting cylinder, a second spring, a second sealing plate, and a second sliding rod. The venting cylinder is disposed on the side wall of the screening box and is connected to the screening box. A second mounting rod is disposed inside the venting cylinder. The second sliding rod is slidably mounted on the second mounting rod. One end of the second sliding rod is fixedly mounted on the second sealing plate, and a baffle is fixedly mounted on the other end of the second sliding rod. The second spring is sleeved on the second sliding rod and is located between the baffle and the second mounting rod. The venting component ensures that compressed air can pass through the first screening hole and the third or second screening hole that cooperates with the first screening hole from the outside of the first and second screening cylinders and enter the interior of the first and second screening cylinders, thereby achieving the purpose of unblocking the first screening hole and the third or second screening hole that cooperates with the first screening hole.

[0010] Preferably, a feed pipe is provided at the end of the second screening cylinder, and a rotating disk is also provided at the end of the feed pipe. A sleeve is provided at the end of the first screening cylinder, the sleeve is sleeved on the feed pipe, a locking element is provided on the sleeve, and an unlocking element is provided on the rotating disk. The unlocking element cooperates with the locking element. The screening assembly also includes a fixed shaft, which is fixedly installed on the inner wall of the screening box. Both the first screening cylinder and the second screening cylinder are rotatably mounted on the fixed shaft. The feed pipe facilitates the conveying of the material to be screened to the inside of the second screening cylinder. The rotating disk facilitates the relative sliding between the second screening cylinder and the first screening cylinder, allowing the second screening hole or the third screening hole to be matched with the first screening hole as needed, thereby screening out iron concentrate of different particle sizes.

[0011] Preferably, the locking component includes a mounting block and a locking pin. The mounting block has a mounting groove, and a third spring and a moving block are disposed in the mounting groove. The moving block is slidably disposed in the mounting groove. The third spring is used to provide power for the moving block to move along the mounting groove. The locking pin is fixedly mounted on the moving block. A limit hole is opened on the rotating disk, and the locking pin cooperates with the limit hole. The unlocking component includes a fixed post, a foolproof ring, a top rod, a pressure plate, and a stop block. The fixed post is fixedly installed on the rotating disk. The foolproof ring is located at the limiting hole, and the center of the foolproof ring coincides with the center of the limiting hole. The top rod is fixedly installed on the pressure plate, and the top rod is located inside the foolproof ring. The stop block is fixedly installed at the end of the fixed post. The pressure plate and the fixed post are slidably engaged. Pressing the pressure plate drives the fixed post to move towards the foolproof ring until the locking post is pushed out of the limiting hole. The locking component is used to fix the first screening cylinder and the second screening cylinder together, ensuring that the second screening cylinder rotates along with the first screening cylinder while the driving component drives it to rotate, thereby achieving the purpose of screening iron concentrate. The unlocking component is used to release the restriction of the locking component on the second screening cylinder, thereby allowing the second screening hole or the third screening hole on the second screening cylinder to coincide with the first screening hole, achieving the purpose of screening iron concentrate particles of different sizes.

[0012] Preferably, the driving component includes a drive motor, a pad, a first pulley, a second pulley, and a belt. The second pulley is fixedly mounted on a bushing, the pad is fixedly mounted on the top of the detection box, the drive motor is fixedly mounted on the pad, and the first pulley is fixedly mounted on the output shaft of the drive motor. The drive motor drives the first pulley to rotate, and the first pulley drives the second pulley to rotate via a belt. The driving component is used to drive the first screening cylinder and the second screening cylinder to rotate, thereby causing the iron concentrate powder to tumble and improving the efficiency of iron concentrate powder screening.

[0013] Preferably, a vertical pole is also provided at the bottom of the separator, and the vertical pole is symmetrically arranged on both sides of the center line of the separator. A material-pushing plate is also provided at the bottom of the vertical pole, and the bottom of the material-pushing plate is in contact with the inner wall of the second screening cylinder. The vertical pole and the material-pushing plate can be used to push the iron concentrate powder, prevent the iron concentrate powder from sticking to the inner wall of the second screening cylinder, and improve the screening efficiency of the iron concentrate powder.

[0014] Preferably, the guide component includes a rotating shaft, a rotating rod, a guide plate, and a locking bolt. The rotating shaft is rotatably mounted on the side wall of the testing chamber and extends through the testing chamber to its outer side. The guide plate is fixedly mounted on the rotating shaft. The rotating rod is located on the outer side of the testing chamber and is fixedly mounted on the rotating shaft. The locking bolt is threaded onto the rotating rod. Several fixing slots are formed on the side wall of the testing chamber, arranged in a circular array around the center of the rotating shaft. The fixing slots cooperate with the locking bolt. The guide component enables the iron concentrate of different particle sizes to be conveyed to different electronic scales inside the testing chamber, thereby facilitating the weighing of the iron concentrate of different particle sizes.

[0015] Preferably, an arc-shaped guide plate is also provided on the outer wall of the testing box. The arc-shaped guide plate has a guide groove on the rotating rod with the center of the rotating shaft as the center. The guide groove slides in conjunction with the arc-shaped guide plate. The arc-shaped guide plate can guide the rotating rod and limit its movement, preventing the rotating rod from shaking during rotation and ensuring the safety of the rotating rod during operation.

[0016] Preferably, limiting grooves are formed on the two inner walls opposite to each other in the screening box, and the limiting grooves cooperate with the ends of the guide plate. The limiting grooves are set to restrict the ends of the guide plate to prevent the screened iron concentrate from sliding down the inner wall of the screening box into the detection box, and to ensure that all the screened iron concentrate can fall onto the guide plate and be conveyed to the designated electronic scale under the action of the guide plate.

[0017] Preferably, a toggle block is also provided at the end of the rotating rod. The toggle block facilitates the movement of the rotating rod and the adjustment of the guide plate.

[0018] The beneficial effects of this invention are: 1) This device adjusts the second screening hole or the third screening hole on the second screening cylinder to overlap with the first screening hole by rotating the second screening cylinder, thereby screening out iron concentrate of different particle sizes. When the first screening cylinder and the second screening cylinder rotate, the first screening hole, the second screening hole and the third screening hole on the first screening cylinder and the second screening cylinder rotate into the closed space formed by the separator, the sealing element and the screening box. The reciprocating motion component pressurizes the air in the closed space formed by the separator, the sealing element and the screening box. The compressed air passes through the first screening hole and the second screening hole or the third screening hole superimposed on the first screening hole from the top of the first screening cylinder and the second screening cylinder and comes into the interior of the first screening cylinder and the second screening cylinder, and is discharged from the exhaust component.

[0019] 2) The partition, sealing component and inner wall of the screening box of this device form a closed space, which ensures that when the reciprocating moving part compresses the air in the closed space, the compressed air will pass through the first screening hole and the third screening hole or the second screening hole that cooperates with the first screening hole in the closed space, so as to achieve the purpose of clearing the first screening hole and the third screening hole or the second screening hole that cooperates with the first screening hole.

[0020] 3) The reciprocating motion of this device can reciprocate to compress the air in the sealed space formed between the separator, the sealing component and the inner wall of the screening box, ensuring that the compressed air passes through the first screening hole and the third or second screening hole that cooperates with the first screening hole in the sealed space, and is finally discharged from the exhaust component, thus achieving the purpose of the first screening hole and the third or second screening hole that cooperates with the first screening hole.

[0021] 4) The air intake component of this device can deliver air to the space between the separator, the seal and the inner wall of the screening box to form a closed space, ensuring that the air in the closed space is always sufficient, and ensuring that the air has enough impact force to clear the first screening hole and the third or second screening hole that cooperates with the first screening hole during the subsequent air compression process.

[0022] 5) The exhaust system of this device ensures that compressed air can pass through the first screening hole and the third or second screening hole that cooperates with the first screening hole from the outside of the first screening cylinder and the second screening cylinder, and enter the interior of the first screening cylinder and the second screening cylinder, thereby achieving the purpose of unblocking the first screening hole and the third or second screening hole that cooperates with the first screening hole.

[0023] 6) The feed pipe of this device is designed to facilitate the conveying of materials to be screened into the interior of the second screening cylinder. The rotating disc is designed to facilitate the relative sliding between the second screening cylinder and the first screening cylinder. It is also designed to allow the second or third screening hole to be matched with the first screening hole as needed, thereby screening out iron concentrate of different particle sizes.

[0024] 7) The locking component of this device is used to fix the first screening cylinder and the second screening cylinder together, ensuring that the second screening cylinder rotates along with the first screening cylinder as the drive component drives it to rotate, thereby achieving the purpose of screening iron concentrate. The unlocking component is used to release the restriction of the locking component on the second screening cylinder, thereby allowing the second screening hole or the third screening hole on the second screening cylinder to coincide with the first screening hole, achieving the purpose of screening iron concentrate particles of different sizes.

[0025] 8) The drive motor of this device drives the first pulley to rotate, and the first pulley drives the second pulley to rotate through the belt. The drive unit is used to drive the first screening cylinder and the second screening cylinder to rotate, thereby driving the iron concentrate to turn over and improving the screening efficiency of iron concentrate.

[0026] 9) The uprights and material-pushing plates of this device can be used to push the iron concentrate powder, preventing the iron concentrate powder from sticking to the inner wall of the second screening cylinder, thus improving the screening efficiency of the iron concentrate powder.

[0027] 10) The guide components of this device can transport iron concentrate of different particle sizes to different electronic scales in the testing box, thus facilitating the weighing of iron concentrate of different particle sizes. The arc-shaped guide plate can guide the rotating rod and also limit the rotation of the rotating rod to prevent it from shaking during rotation, ensuring the safety of the rotating rod during operation. The limiting groove is used to limit the end of the guide plate to prevent the iron concentrate from sliding down the inner wall of the screening box into the testing box, ensuring that all the iron concentrate falls onto the guide plate and is transported to the designated electronic scale under the action of the guide plate. Attached Figure Description

[0028] Appendix Figure 1 This is a schematic diagram of the structure of the present invention.

[0029] Appendix Figure 2 This is a side view of the present invention.

[0030] Appendix Figure 3 This is the present invention. Figure 2 A cross-sectional view along the BB direction.

[0031] Appendix Figure 4 This is a schematic diagram of the structure of the sealing element and the separator in this invention.

[0032] Appendix Figure 5 This is a schematic diagram of the reciprocating motion component in this invention.

[0033] Appendix Figure 6 This is the present invention. Figure 3 Enlarged view of point A in the middle.

[0034] Appendix Figure 7 This is a schematic diagram of the internal structure of the air intake component in this invention.

[0035] Appendix Figure 8 This is a schematic diagram of the internal structure of the exhaust component in this invention.

[0036] Appendix Figure 9 This is a schematic diagram of the structure of the first screening cylinder and the second screening cylinder in this invention.

[0037] Appendix Figure 10 This is a schematic diagram of the installation structure of the guide component in this invention.

[0038] Appendix Figure 11 This is the present invention. Figure 9 Enlarged view of point D in the middle.

[0039] Appendix Figure 12 This is the present invention. Figure 1 Enlarged view of section B in the middle.

[0040] Appendix Figure 13 This is the present invention. Figure 10 Enlarged view of point C in the middle.

[0041] Appendix Figure 14 This is a cross-sectional view of the locking component in this invention.

[0042] Appendix Figure 15 This is a schematic diagram of the unlocking component in this invention.

[0043] In the picture: 1. Testing box; 2. Guide component; 201. Rotating rod; 202. Guide groove; 203. Actuating block; 204. Locking bolt; 205. Fixing groove; 206. Arc-shaped guide plate; 207. Rotating shaft; 208. Material guide plate; 3. Screening box; 301. Limiting groove; 4. Unblocking components; 401. Reciprocating motion components; 402. Exhaust components; 403. Intake components; 404. Separators; 405. Sealing components; 406. First sealing plate; 407. Partition plate; 408. Second sealing plate; 409. Inclined plate; 4010. Base plate; 4011, Electric motor; 4012, Lifting rod; 4013, Strip hole; 4014, Rotating arm; 4015, Slider; 4016, Connecting rod; 4017, Piston rod; 4018, Piston cylinder; 4019, Support; 4020, Connecting pipe; 4021, Piston head; 4022, Sliding rod; 4023, Air inlet cylinder; 4024, Filter cartridge; 4025, First sliding rod; 4206, First spring; 4027, First mounting rod; 4028, First sealing plate; 4029. Exhaust pipe; 4030. Second sealing plate; 4031. Second mounting rod; 4032. Second sliding rod; 4033. Second spring; 4034. Baffle; 4035. Limiting rod; 4036. Groove; 5. Screening assembly; 501. Sleeve shaft; 502. First screening cylinder; 503. First screening hole; 504. Fixed shaft; 505. Second screening cylinder; 506. Second screening hole; 507. Third screening hole; 508. Feed pipe; 509. Rotary disc; 5010, Pad; 5011, Drive motor; 5012, Belt; 5013, Second pulley; 5014, First pulley; 5015, Limiting hole; 5016, Upright post; 5017, Material guide plate; 6. Locking element; 601. Mounting block; 602. Mounting groove; 603. Third spring; 604. Moving block; 605. Locking pin; 7. Unlocking component; 701. Pressure plate; 702. Top rod; 703. Anti-fool ring; 704. Fixing post; 705. Stop block; 8. Electronic scale. Detailed Implementation

[0044] The technical solutions in 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.

[0045] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to 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 invention.

[0046] like Figure 1 , Figure 3As shown, a screening system for testing iron concentrate production includes a screening box 3 and a testing box 1. The screening box 3 is located on top of the testing box 1 and is connected to the testing box 1. An electronic scale 8 and a guide 2 are installed inside the testing box 1. The guide 2 is located at the connection between the screening box 3 and the testing box 1 and is used to guide the screened iron concentrate. A screening component 5 and a clearing component 4 that cooperate with the screening component 5 are installed inside the screening box 3. The screening component 5 is designed to screen out iron concentrate particles of different sizes. The clearing component 4 is designed to clear the screen component 5 and ensure its normal operation.

[0047] Among them, the electronic scale 8 is used to weigh the sieved iron concentrate, which improves the detection efficiency of iron concentrate.

[0048] In this embodiment, as Figure 9 As shown, the screening assembly 5 includes a first screening cylinder 502, a second screening cylinder 505, and a driving component. The second screening cylinder 505 is located inside the first screening cylinder 502, and the outer wall of the second screening cylinder 505 is in contact with the inner wall of the first screening cylinder 502. The first screening cylinder 502 and the second screening cylinder 505 can rotate relative to each other. A plurality of first screening holes 503 are evenly opened on the first screening cylinder 502. A plurality of second screening holes 506 and third screening holes 507, which are the same as the first screening holes 503, are opened on the second screening cylinder 505. By rotating the second screening cylinder 505, the second screening holes 506 or third screening holes 507 on the second screening cylinder 505 can be adjusted to overlap with the first screening holes 503. The driving component is set on the top of the detection box 1 and is used to drive the first screening cylinder 502 and the second screening cylinder 505 to rotate.

[0049] The first screening cylinder 502 and the second screening cylinder 505 are configured to screen iron concentrate particles of different sizes without changing the screening cylinders. The rotation of the first screening cylinder 502 and the second screening cylinder 505 can prevent iron concentrate from sticking to the inner wall of the second screening cylinder 505, and can also achieve the purpose of turning over the iron concentrate, thereby improving the screening efficiency of iron concentrate.

[0050] In this embodiment, as Figure 2 , Figure 3As shown, the unblocking assembly 4 includes a reciprocating motion component 401, an air inlet component 403, an air outlet component 402, a separator component 404, and a sealing component 405. The separator component 404 is symmetrically arranged on both sides of the center line of the first screening cylinder 502, and is installed on the inner wall of the screening box 3. The separator component 404 is in contact with the outer wall of the first screening cylinder 502 and can rotate relative to the first screening cylinder 502. The sealing component 405 is disposed inside the second screening cylinder 505, and the sealing component 405 is in contact with the second screening cylinder 505. The inner wall of the dividing cylinder 505 is fitted together, and the second screening cylinder 505 can rotate relative to the sealing element 405. A sealed space is formed between the dividing element 404, the sealing element 405 and the inner wall of the screening box 3. The reciprocating motion element 401 is set on the outside of the screening box 3 to pressurize the air in the sealed space. The air inlet element 403 is set on the top of the screening box 3 and is connected to the screening box 3. The exhaust element 402 is set on one side of the screening box 3, located on the top of the sealing element 405, and is connected to the screening box 3. As the first screening cylinder 502 and the second screening cylinder 505 rotate, the first screening hole 503, the second screening hole 506, and the third screening hole 507 on the first screening cylinder 502 and the second screening cylinder 505 rotate into the sealed space formed by the separator 404, the seal 405, and the screening box 3. The reciprocating motion component 401 reciprocates to pressurize the air in the sealed space formed by the separator 404, the seal 405, and the screening box 3. The compressed air passes through the first screening hole 503 and the second screening hole 506 or the third screening hole superimposed on the first screening hole 503 from above the first screening cylinder 502 and the second screening cylinder 505 and comes into the interior of the first screening cylinder 502 and the second screening cylinder 505, and is discharged from the exhaust component 402.

[0051] In this embodiment, as Figure 4As shown, the separator 404 includes a separator plate 407 and a first sealing plate 406. The separator plate 407 is symmetrically arranged on both sides of the first screening cylinder 502 and the second screening cylinder 505. The separator plate 407 is inclined, with one end connected to the inner wall of the screening box 3 and the other end in contact with the outer wall of the first screening cylinder 502. The first sealing plate 406 is symmetrically arranged on both sides of the separator plate 407 and is located on the inner wall of the first screening cylinder 502 and the screening box 3. The first sealing plate 406 is in contact with the outer wall of the first screening cylinder 502; the first sealing plate 406 can block the gap between the first screening cylinder 502 and the inner wall of the screening box 3, preventing compressed air from flowing out from the gap between the first screening cylinder 502 and the inner wall of the screening box 3, affecting the quality of clearing the first screening hole 503, the second screening hole 506 and the third screening hole 507, and ensuring that the compressed air can clear the first screening hole 503, the second screening hole 506 and the third screening hole 507.

[0052] To prevent air leakage between the outer wall of the first screening cylinder 502 and the first sealing plate 406, a rubber gasket can be installed between the outer wall of the first screening cylinder 502 and the first sealing plate 406. Without affecting the normal rotation of the first screening cylinder 502, it can also limit the loss of compressed air to the maximum extent, ensuring the quality of clearing the first screening hole 503, the second screening hole 506 and the third screening hole 507.

[0053] In this embodiment, as Figure 4 As shown, the sealing element 405 includes a base plate 4010, second sealing plates 408 disposed on both sides of the base plate 4010, and inclined plates 409 located at both ends of the base plate 4010. The inclined angle of the inclined plates 409 is the same as that of the partition plate 407. The second sealing plate 408 is in contact with the inner wall of the second screening cylinder 505, and a clearance groove (not shown in the figure) is opened on the side plate near the fixed shaft 504. The base plate 4010 is fixedly installed at the end of the fixed shaft 504. A sealed space is formed between the partition 404, the sealing element 405, and the inner wall of the screening box 3. This ensures that when the reciprocating motion element 401 compresses the air in the sealed space, the compressed air will pass through the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperates with the first screening hole 503 in the sealed space, thereby achieving the purpose of unblocking the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperates with the first screening hole 503.

[0054] The inclined plate 409 is designed to cooperate with the partition plate 407 to ensure that the gas entering the interior from the outside of the first screening cylinder 502 and the second screening cylinder 505 flows out between the inclined plate 409 and the partition plate 407, thus ensuring the smooth flow of the device through the first screening hole 503, the second screening hole 506, and the third screening hole 507.

[0055] To prevent the loss of compressed air, rubber pads can be installed at the connection between the inclined plate 409 and the second screening cylinder 505, and at the connection between the partition plate 407 and the inner wall of the first screening cylinder 502, to ensure that the compressed air can clear the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperates with the first screening hole 503.

[0056] In this embodiment, as Figure 5 As shown, the reciprocating motion component 401 includes a support 4019, a motor 4011, a piston cylinder 4018, a piston head 4021, a connecting pipe 4020, a piston rod 4017, and a lifting rod 4012. The support 4019 is disposed on one side of the screening box 3. The motor 4011 is fixedly mounted on the support 4019, and a rotating arm 4014 is disposed on the output shaft of the motor 4011. The piston cylinders 4018 are symmetrically disposed on both sides of the screening box 3 and are fixedly mounted on the screening box 3. The piston head 4021 is disposed inside the piston cylinder 4018, and the piston rod 4017 is mounted on the piston head 4021 and extends to the bottom of the piston cylinder 4018. The two ends of the connecting pipe 4020 are respectively connected to the piston cylinder 4018 and the screening box 3. A connecting rod 4012 is disposed on the piston rod 4017. The connecting rod 4016 connects the two ends of the lifting rod 4012 to the connecting rods 4016 on the piston rods 4017 on both sides of the screening box 3. A strip hole 4013 is opened in the middle of the lifting rod 4012, and a slider 4015 is provided in the strip hole 4013. The end of the rotating arm 4014 is rotatably mounted on the slider 4015. The reciprocating motion component 401 can reciprocate to compress the air in the sealed space formed between the separator 404, the sealing component 405 and the inner wall of the screening box 3, ensuring that the compressed air passes through the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperates with the first screening hole 503 in the sealed space, and is finally discharged from the exhaust component 402, thereby achieving the purpose of the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperates with the first screening hole 503.

[0057] The motor 4011 drives the rotating arm 4014 to rotate. The rotation of the rotating arm 4014 causes the slider 4015 to slide along the strip hole 4013 on the lifting rod 4012, thereby driving the lifting rod 4012 to move up and down. During the up and down movement of the lifting rod 4012, it will drive the piston rod 4017 to push the piston head 4021 to move up and down reciprocally in the piston cylinder 4018.

[0058] When the piston head 4021 moves upward in the piston cylinder 4018, it compresses the air in the piston cylinder 4018 into a sealed space formed between the separator 404, the seal 405, and the inner wall of the screening box 3, thereby achieving the purpose of compressing the air in the sealed space. When the air in the sealed space is compressed to the extent that it can move, the exhaust device 402 will automatically open. In order to discharge the gas in the sealed space, the compressed air will enter the interior of the first screening cylinder 502 and the second screening cylinder 505 from the outside of the first screening cylinder 502 and the second screening cylinder 505 through the first screening hole 503 and the second screening hole 506 or the third screening hole 507 that cooperates with the first screening hole 503, thereby clearing the first screening hole 503 and the second screening hole 506 or the third screening hole 507 that cooperates with the first screening hole 503, and finally being discharged from the exhaust device 402.

[0059] When the piston head 4021 moves downward, the sealed space becomes negative pressure. Under the action of atmospheric pressure, the air intake 403 will open, and air will enter the sealed space through the air intake 403, ensuring that the air in the sealed space is always full, thus ensuring the dredging quality of the first screening hole 503 and the second screening hole 506 or the third screening hole 507 that cooperates with the first screening hole 503.

[0060] In this embodiment, as Figure 7 As shown, the air intake component 403 includes an air intake cylinder 4023, a filter cylinder 4024, a first spring 4206, a first sealing plate 4028, and a first sliding rod 4025. The air intake cylinder 4023 is located on top of the screening box 3 and is connected to the screening box 3. A first mounting rod 4027 is provided inside the air intake cylinder 4023. The filter cylinder 4024 is sleeved on the air intake cylinder 4023. The two ends of the first sliding rod 4025 are respectively connected to the filter cylinder and the first sealing plate 4028. The first spring 4026... 206 is sleeved on the first slide rod 4025, and the first spring 4206 is located between the first mounting rod 4027 and the filter cylinder 4024. The air inlet 403 can deliver air to the space between the separator 404, the seal 405 and the inner wall of the screening box 3 to form a closed space, ensuring that the air in the closed space is always sufficient, and ensuring that the air has sufficient impact force to clear the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperates with the first screening hole 503.

[0061] When a negative pressure is formed in the sealed space between the separator 404, the seal 405, and the inner wall of the screening box 3, atmospheric pressure will drive the filter cylinder 4024 to move towards the side closer to the screening box 3. During the movement of the filter cylinder 4024, the first spring 4206 will be compressed, and the first sealing plate 4028 will move downward until a gap is created between the first sealing plate 4028 and the air inlet cylinder 4023, allowing air to pass through the filter cylinder 4024 and be transported from the air inlet cylinder 4023 to the sealed space. When the pressure in the sealed space is the same as the atmospheric pressure, the spring will reset, which will drive the filter cylinder 4024 and the first sealing plate 4028 to reset, thus achieving the purpose of sealing the air inlet cylinder 4023 again.

[0062] The filter cartridge 4024 is designed to filter out impurities in the air, preventing these impurities from clogging the first sieve hole 503 and the third sieve hole 507 or the second sieve hole 506 that cooperate with the first sieve hole 503. This ensures the device effectively clears the first sieve hole 503 and the third sieve hole 507 or the second sieve hole 506 that cooperate with the first sieve hole 503.

[0063] like Figure 7 As shown, in order to prevent the filter cylinder 4024 and the first sealing plate 4028 from rotating during operation, sliding rods 4022 are provided on both sides of the first sliding rod 4025. The two ends of the sliding rods 4022 are connected to the filter cylinder 4024 and the first sealing plate 4028 respectively, and the sliding rods 4022 are slidably engaged with the first mounting rod 4027.

[0064] In this embodiment, as Figure 8As shown, the exhaust component 402 includes an exhaust pipe 4029, a second spring 4033, a second sealing plate 4030, and a second sliding rod 4032. The exhaust pipe 4029 is disposed on the side wall of the screening box 3 and is connected to the screening box 3. A second mounting rod 4031 is disposed inside the exhaust pipe 4029. The second sliding rod 4032 is slidably mounted on the second mounting rod 4031. One end of the second sliding rod 4032 is fixedly mounted on the second sealing plate 4030, and a baffle 4034 is fixedly mounted on the other end of the second sliding rod 4032. The second spring 4032... The second spring 4033 is located between the baffle 4034 and the second mounting rod 4031 and is mounted on the second slide rod 4032. The exhaust component 402 ensures that compressed air can pass through the outside of the first screening cylinder 502 and the second screening cylinder 505, through the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperates with the first screening hole 503, and enter the inside of the first screening cylinder 502 and the second screening cylinder 505, thereby achieving the purpose of unblocking the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperates with the first screening hole 503.

[0065] When the reciprocating motion component 401 compresses the air in the sealed space formed between the separator 404, the seal 405, and the inner wall of the screening box 3, when a certain pressure value is reached, the air in the sealed space will push the second sealing plate 4030 outward, causing the second sealing plate 4030 to move away from the screening box 3 until a gap is created between the second sealing plate 4030 and the screening cylinder, allowing air to circulate. The compressed air will then pass through the outside of the first screening cylinder 502 and the second screening cylinder 505. The first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperate with the first screening hole 503 enter the interior of the first screening cylinder 502 and the second screening cylinder 505 and are finally discharged from the exhaust pipe 4029. When the compressed air passes through the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperate with the first screening hole 503, it will clear the first screening hole 503 and the third screening hole 507 or the second screening hole 506 that cooperate with the first screening hole 503.

[0066] When the pressure in the sealed space formed between the separator 404, the seal 405 and the inner wall of the screening box 3 returns to normal, the second sealing plate 4030 will be reset under the action of the second spring 4033 until the second sealing plate 4030 seals the exhaust pipe 4029 again.

[0067] The reciprocating motion component 401, in conjunction with the aforementioned air intake component 403 and exhaust component 402, can continuously unclog the first screening hole 503, the third screening hole 507, and the second screening hole 506 on the first screening cylinder 502 and the second screening cylinder 505, thereby ensuring the screening efficiency of the device.

[0068] To prevent the second sealing plate 4030 from sliding during operation, a limiting rod 4035 is also provided on the second sealing plate 4030, and a groove 4036 is opened on the inner wall of the exhaust pipe 4029, and the groove 4036 slides in cooperation with the limiting rod 4035.

[0069] In this embodiment, as Figure 9 As shown, a feed pipe 508 is provided at the end of the second screening cylinder 505, and a rotating disk 509 is also provided at the end of the feed pipe 508. A sleeve shaft 501 is provided at the end of the first screening cylinder 502, and the sleeve shaft 501 is sleeved on the feed pipe 508. The feed pipe 508 facilitates the conveying of the material to be screened into the interior of the second screening cylinder 505. The rotating disk 509 facilitates the relative sliding between the second screening cylinder 505 and the first screening cylinder 502, so that the second screening hole 506 or the third screening hole 507 can be matched with the first screening hole 503 as needed, thereby screening out iron concentrate of different particle sizes.

[0070] The sleeve shaft 501 facilitates the installation of the second pulley 5013, ensuring the normal operation of the drive components.

[0071] In this embodiment, as Figure 1 , Figure 9 As shown, a locking element 6 is provided on the sleeve shaft 501 to ensure that the second screening cylinder 505 rotates together with the first screening cylinder 502. An unlocking element 7 is provided on the rotating disk 509 to release the restriction of the locking element 6 on the second screening cylinder 505, thereby achieving the purpose of adjusting the second screening cylinder 505. The unlocking element 7 cooperates with the locking element 6.

[0072] In this embodiment, as Figure 9 As shown, the screening assembly 5 also includes a fixed shaft 504, which is fixedly installed on the inner wall of the screening box 3. The first screening cylinder 502 and the second screening cylinder 505 are both rotatably installed on the fixed shaft 504.

[0073] In this embodiment, as Figure 14As shown, the locking component 6 includes a mounting block 601 and a locking post 605. A mounting groove 602 is formed on the mounting block 601, and a third spring 603 and a moving block 604 are disposed within the mounting groove 602. The moving block 604 is slidably disposed within the mounting groove 602. The third spring 603 provides power for the moving block 604 to move along the mounting groove 602. The locking post 605 is fixedly mounted on the moving block 604. A limiting hole 5015 is formed on the rotating disk 509, and the locking post 605 cooperates with the limiting hole 5015. The locking component 6 is used to fix the first screening cylinder 502 and the second screening cylinder 505 together, ensuring that the second screening cylinder 505 rotates along with the first screening cylinder 502 as the driving component rotates, thereby achieving the purpose of screening iron concentrate.

[0074] When the locking pin 605 moves to the limiting hole 5015 on the rotating disk 509, the moving block 604 will slide along the mounting groove 602 under the action of the third spring 603, thereby driving the locking pin 605 to be inserted into the limiting hole 5015, fixing the first screening cylinder 502 and the second screening cylinder 505 together.

[0075] The third spring 603 always provides power to the locking pin 605, ensuring that the first screening cylinder 502 and the second screening cylinder 505 are always in a relatively stationary state during operation, thereby improving the screening efficiency of iron concentrate.

[0076] In this embodiment, as Figure 15 As shown, the unlocking component 7 includes a fixing post 704, a foolproof ring 703, a push rod 702, a pressure plate 701, and a stop block 705. The fixing post 704 is fixedly installed on the rotating disk 509. The foolproof ring 703 is located at the limiting hole 5015, and the center of the foolproof ring 703 coincides with the center of the limiting hole 5015. The push rod 702 is fixedly installed on the pressure plate 701, and the push rod 702 is located inside the foolproof ring 703. The stop block 705 is fixedly installed on the fixing post 704. At the end of 4, the pressure plate 701 is slidably engaged with the fixed column 704. Pressing the pressure plate 701 drives the fixed column 704 to move toward the anti-fool ring 703 until the locking column 605 is pushed out of the limiting hole 5015. The unlocking member 7 is used to release the restriction of the locking member 6 on the second screening cylinder 505, thereby enabling the second screening hole 506 or the third screening hole 507 on the second screening cylinder 505 to coincide with the first screening hole 503, so as to achieve the purpose of screening out iron concentrate of different sizes.

[0077] When unlocking is required, simply press the pressure plate 701 to move the push rod 702 along the side of the fixed post 704 that is close to the rotating disk 509. The push rod 702 passes through the anti-fool ring 703 and extends into the limiting hole 5015 until the locking post 605 is pushed out of the limiting hole 5015.

[0078] In this embodiment, as Figure 10 As shown, the driving component includes a drive motor 5011, a pad 5010, a first pulley 5014, a second pulley 5013, and a belt 5012. The second pulley 5013 is fixedly mounted on a bushing. The pad 5010 is fixedly mounted on the top of the detection box 1. The drive motor 5011 is fixedly mounted on the pad 5010. The first pulley 5014 is fixedly mounted on the output shaft of the drive motor 5011. The drive motor 5011 drives the first pulley 5014 to rotate. The first pulley 5014 drives the second pulley 5013 to rotate via the belt 5012. The driving component is used to drive the first screening cylinder 502 and the second screening cylinder 505 to rotate, thereby agitating the iron concentrate and improving the screening efficiency of the iron concentrate.

[0079] In this embodiment, as Figure 11 As shown, a vertical rod 5016 is also provided at the bottom of the separator 404. The vertical rod 5016 is symmetrically arranged on both sides of the center line of the separator 404. A material-pushing plate 5017 is also provided at the bottom of the vertical rod 5016. The bottom of the material-pushing plate 5017 is in contact with the inner wall of the second screening cylinder 505. The vertical rod 5016 and the material-pushing plate 5017 can play the purpose of pushing the iron concentrate powder, preventing the iron concentrate powder from sticking to the inner wall of the second screening cylinder 505, and improving the screening efficiency of the iron concentrate powder.

[0080] In this embodiment, as Figure 12 , Figure 13 As shown, the guide component 2 includes a rotating shaft 207, a rotating rod 201, a guide plate 208, and a locking bolt 204. The rotating shaft 207 is rotatably mounted on the side wall of the testing box 1 and extends through the testing box 1 to the outside of the testing box 1. The guide plate 208 is fixedly mounted on the rotating shaft 207. The rotating rod 201 is located on the outside of the testing box 1 and is fixedly mounted on the rotating shaft 207. The locking bolt 204 is threaded onto the rotating rod 201. Several fixing grooves 205 are opened on the side wall of the testing box 1. The fixing grooves 205 are arranged in a circular array around the center of the rotating shaft 207. The fixing grooves 205 cooperate with the locking bolt 204. The guide component 2 can transport iron concentrate of different particle sizes to different electronic scales 8 in the testing box 1, thereby facilitating the weighing of iron concentrate of different particle sizes.

[0081] When the guide plate 208 needs to be adjusted, loosen the locking bolt 204, rotate the rotating rod 201 so that the top of the guide plate 208 rotates at an angle and moves into the limiting groove 301 on the side wall of the screening box 3, and then tighten the locking bolt 204.

[0082] The locking bolt 204 is used to fix the rotating rod 201 on the detection box 1 to ensure that the guide plate 208 is always in a stable state during operation.

[0083] In this embodiment, as Figure 12 As shown, an arc-shaped guide plate 206 is also provided on the outer wall of the detection box 1. The arc-shaped guide plate 206 has a guide groove 202 on the rotating rod 201 with the center of the rotating shaft 207 as the center. The guide groove 202 slides in cooperation with the arc-shaped guide plate 206.

[0084] The arc-shaped guide plate 206 can guide the rotating rod 201 and also limit the rotation of the rotating rod 201 to prevent it from shaking during rotation, thus ensuring the safety of the rotating rod 201 during operation.

[0085] In this embodiment, as Figure 3 As shown, limiting grooves 301 are opened on the two opposing inner walls of the screening box 3, and the limiting grooves 301 cooperate with the ends of the guide plate 208.

[0086] The limiting groove 301 is used to restrict the end of the guide plate 208 to prevent the screened iron concentrate from sliding down the inner wall of the screening box 3 into the detection box 1, ensuring that all the screened iron concentrate can fall onto the guide plate 208 and be conveyed to the designated electronic scale 8 under the action of the guide plate 208.

[0087] In this embodiment, as Figure 12 As shown, a toggle block 203 is also provided at the end of the rotating rod 201. The toggle block 203 facilitates the toggle of the rotating rod 201 and the adjustment of the guide plate 208.

[0088] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A screening system for testing iron concentrate production, comprising a screening box and a testing box, wherein the screening box is disposed on top of the testing box and the screening box is connected to the testing box, characterized in that, An electronic scale and a guide are installed inside the testing box. The guide is located at the connection between the screening box and the testing box and is used to guide the iron concentrate that has been screened out. A screening component and a dredging component that cooperate with the screening component are installed inside the screening box.

2. The sieving system for iron concentrate production and testing according to claim 1, characterized in that, The screening assembly includes a first screening cylinder, a fixed shaft, a second screening cylinder, and a driving component. The second screening cylinder is located inside the first screening cylinder, and its outer wall is in contact with the inner wall of the first screening cylinder. The first and second screening cylinders can rotate relative to each other. A plurality of first screening holes are evenly opened on the first screening cylinder, and a plurality of second screening holes and third screening holes identical to the first screening holes are opened on the second screening cylinder. The second screening cylinder can be rotated to adjust the overlap between the second screening holes or the third screening holes and the first screening holes. The driving component is located on the top of the detection box and is used to drive the first and second screening cylinders to rotate. The fixed shaft is fixedly installed on the inner wall of the screening box, and both the first and second screening cylinders are rotatably mounted on the fixed shaft. A feed pipe is provided at the end of the second screening cylinder, and a rotating disk is also provided at the end of the feed pipe. A sleeve is provided at the end of the first screening cylinder, and the sleeve is fitted onto the feed pipe. A locking component is provided on the sleeve, and an unlocking component is provided on the rotating disk. The unlocking component cooperates with the locking component.

3. The sieving system for iron concentrate production and testing according to claim 2, characterized in that, The unblocking assembly includes a reciprocating motion component, an air inlet component, an air outlet component, a separator component, and a sealing component. The separator components are symmetrically arranged on both sides of the center line of the first screening cylinder and are installed on the inner wall of the screening box. The separator components are in contact with the outer wall of the first screening cylinder and can rotate relative to the first screening cylinder. The sealing component is located inside the second screening cylinder and is in contact with the inner wall of the second screening cylinder. The second screening cylinder can rotate relative to the sealing component. A sealed space is formed between the separator component, the sealing component, and the inner wall of the screening box. The reciprocating motion component is located on the outside of the screening box and is used to pressurize the air in the sealed space. The air inlet component is located at the top of the screening box and is connected to the screening box. The air outlet component is located on one side of the screening box, above the sealing component, and is connected to the screening box.

4. A sieving system for iron concentrate production and testing according to claim 3, characterized in that, The separator includes a separator plate and a first sealing plate. The separator plate is symmetrically arranged on both sides of the first screening cylinder and the second screening cylinder. The separator plate is inclined. One end of the separator plate is connected to the inner wall of the screening box, and the other end of the separator plate is in contact with the outer wall of the first screening cylinder. The first sealing plate is symmetrically arranged on both sides of the separator plate and is located between the inner walls of the first screening cylinder and the screening box. The first sealing plate is in contact with the outer wall of the first screening cylinder. The sealing element includes a base plate, a second sealing plate disposed on both sides of the base plate, and inclined plates located at both ends of the base plate. The inclined plates have the same inclination angle as the partition plates. The second sealing plate is in contact with the inner wall of the second screening cylinder, and a clearance groove is opened on the side plate near the fixed shaft. The base plate is fixedly installed at the end of the fixed shaft.

5. A sieving system for iron concentrate production and testing according to claim 4, characterized in that, A vertical pole is also provided at the bottom of the base plate. The vertical poles are symmetrically arranged on both sides of the center line of the base plate. A material-pushing plate is also provided at the bottom of the vertical pole. The bottom of the material-pushing plate is in contact with the inner wall of the second screening cylinder.

6. A sieving system for iron concentrate production and testing according to claim 3, characterized in that, The reciprocating motion component includes a support, a motor, a piston cylinder, a piston head, a connecting pipe, a piston rod, and a lifting rod. The support is located on one side of the screening box. The motor is fixedly mounted on the support, and a rotating arm is mounted on the output shaft of the motor. The piston cylinders are symmetrically arranged on both sides of the screening box and are fixedly mounted on the screening box. The piston head is located inside the piston cylinder, and the piston rod is mounted on the piston head and extends to the bottom of the piston cylinder. The two ends of the connecting pipe are respectively connected to the piston cylinder and the screening box. A connecting rod is provided on the piston rod. The two ends of the lifting rod are respectively connected to the connecting rods on the piston rods on both sides of the screening box. A strip-shaped hole is opened in the middle of the lifting rod, and a slider is provided in the strip-shaped hole. The end of the rotating arm is rotatably mounted on the slider.

7. A sieving system for iron concentrate production and testing according to claim 3, characterized in that, The air intake component includes an air intake cylinder, a filter cylinder, a first spring, a first sealing plate, and a first sliding rod. The air intake cylinder is located on the top of the screening box and is connected to the screening box. A first mounting rod is provided inside the air intake cylinder. The filter cylinder is sleeved on the air intake cylinder. The two ends of the first sliding rod are respectively connected to the filter cylinder and the first sealing plate. The first spring is sleeved on the first sliding rod and is located between the first mounting rod and the filter cylinder. The exhaust component includes an exhaust cylinder, a second spring, a second sealing plate, and a second sliding rod. The exhaust cylinder is disposed on the side wall of the screening box and is connected to the screening box. A second mounting rod is disposed inside the exhaust cylinder. The second sliding rod is slidably mounted on the second mounting rod. One end of the second sliding rod is fixedly mounted on the second sealing plate, and a baffle is fixedly mounted on the other end of the second sliding rod. The second spring is sleeved on the second sliding rod and is located between the baffle and the second mounting rod.

8. A sieving system for iron concentrate production and testing according to claim 2, characterized in that, The locking component includes a mounting block and a locking pin. The mounting block has a mounting groove, and a third spring and a moving block are disposed in the mounting groove. The moving block is slidably disposed in the mounting groove. The third spring is used to provide power for the moving block to move along the mounting groove. The locking pin is fixedly mounted on the moving block. A limit hole is opened on the rotating disk, and the locking pin cooperates with the limit hole. The unlocking component includes a fixed post, a foolproof ring, a push rod, a pressure plate, and a stop block. The fixed post is fixedly installed on the rotating disk. The foolproof ring is located at the limiting hole, and the center of the foolproof ring coincides with the center of the limiting hole. The push rod is fixedly installed on the pressure plate, and the push rod is located inside the foolproof ring. The stop block is fixedly installed at the end of the fixed post. The pressure plate and the fixed post are slidably engaged. Pressing the pressure plate drives the fixed post to move towards the foolproof ring until the locking post is pushed out of the limiting hole.

9. A sieving system for iron concentrate production and testing according to claim 2, characterized in that, The driving component includes a drive motor, a pad, a first pulley, a second pulley, and a belt. The second pulley is fixedly mounted on a bushing. The pad is fixedly mounted on the top of the detection box. The drive motor is fixedly mounted on the pad. The first pulley is fixedly mounted on the output shaft of the drive motor. The drive motor drives the first pulley to rotate. The first pulley drives the second pulley to rotate via the belt.

10. A sieving system for iron concentrate production and testing according to claim 1, characterized in that, The guide component includes a rotating shaft, a rotating rod, a guide plate, and a locking bolt. The rotating shaft is rotatably mounted on the side wall of the testing box and extends through the testing box to the outside of the testing box. The guide plate is fixedly mounted on the rotating shaft. The rotating rod is located on the outside of the testing box and is fixedly mounted on the rotating shaft. The locking bolt is threaded onto the rotating rod. Several fixing grooves are opened on the side wall of the testing box. The fixing grooves are arranged in a circular array around the center of the rotating shaft. The fixing grooves cooperate with the locking bolt.

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