Material filtering and impurity removing device

Abstract

The utility model relates to the technical field of filtering and impurity removing devices, and discloses a material filtering and impurity removing device which comprises a base, screen frames are stacked on the mounting base through a plurality of fixing pieces. A screen cavity is formed in the screen frame, a discharging pipe communicated with the screen cavity is arranged on the outer side wall of the screen frame, a blocking assembly is arranged in the screen cavity and comprises a blocking plate which is arranged in the screen cavity and can slide, a communicating groove communicated with the screen cavity is formed in the outer side wall of the screen frame, and a driving block penetrating through the communicating groove to extend out is arranged on one side face of the blocking plate. Positioning pieces used for positioning the driving blocks are oppositely arranged on the outer side wall of the screen frame. And a top cover is arranged on the screen frame at the highest position through a mounting assembly. Through the arrangement of the blocking assembly, the driving block slides along the communicating groove, the driving block can drive the blocking plate to slide along the arc-shaped groove, then the blocking plate can close the discharging pipe, and therefore the situation that materials are discharged from the discharging pipe can be well avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of filtration and impurity removal devices, specifically, to a material filtration and impurity removal device. Background Technology

[0002] Filtration and impurity removal devices are equipment used to remove impurities and improve product quality during production and manufacturing processes. They remove impurities such as foreign objects and sediments generated in raw materials or during production through physical barriers, ensuring the purity and quality of the final product.

[0003] Vibrating screens are common filtration and impurity removal devices. They mainly consist of stacked screen frames on a base, with a vibrating motor vibrating the stacked screen frames to filter and remove impurities from the material. However, in traditional vibrating screens, because the discharge pipe on the outer wall of the screen frame is connected to the inside of the screen frame, the material inside the screen frame may not be completely filtered before being discharged through the discharge pipe by vibration. This results in the discharged material containing impurities, affecting the purity and quality of the material, and therefore needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a material filtration and impurity removal device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A material filtration and impurity removal device includes a base with a mounting seat on the base; a screen frame is stacked on the mounting seat by multiple fixing components; a screen cavity is provided inside the screen frame, and a discharge pipe communicating with the screen cavity is provided on the outer wall of the screen frame; a sealing assembly for blocking the discharge pipe is provided inside the screen cavity, the sealing assembly includes a slidable blocking plate disposed inside the screen cavity, a communicating groove communicating with the screen cavity is provided on the outer wall of the screen frame, the communicating groove is arranged circumferentially along the screen frame, a driving block extending through the communicating groove is provided on one side of the blocking plate, the driving block is used to drive the blocking plate to open and close the discharge pipe, positioning components for positioning the driving block are provided opposite each other on the outer wall of the screen frame at both ends of the communicating groove; a top cover is provided on the screen frame at the highest position via the mounting assembly, the top cover is used to block the screen frame at the highest position.

[0007] Furthermore, the upper and lower ends of the screen frame extend outward to form an upper mounting ring and a lower mounting ring, respectively; the fastener includes two interlocking connecting half-rings, one end of which is hinged together by a hinge; the connecting half-rings are provided with a groove along their circumference, and the upper and lower mounting rings of adjacent screen frames are inserted into the groove to fix the adjacent screen frames; the other end of the two connecting half-rings is provided with a locking member to fix the two connecting half-rings.

[0008] Furthermore, an arc-shaped block is provided on the side wall of the sieve cavity along its circumference, and an arc-shaped groove with an opening at the lower end is provided on the upper part of the arc-shaped block. The arc-shaped groove is T-shaped, and the upper end of the blocking plate is slidably installed in the arc-shaped groove. A connecting groove is provided to connect the arc-shaped groove.

[0009] Furthermore, the drive block is provided with a positioning hole, and the opposite side wall of the drive block is provided with a first inclined surface. The positioning component includes a fixed plate provided on the side wall of the screen frame, a slidable positioning rod provided on the fixed plate, a second inclined surface adapted to the first inclined surface provided at the lower end of the positioning rod, and an abutment piece provided on the positioning rod. A first spring is sleeved on the positioning rod located between the abutment piece and the fixed plate. The first spring is used to push the abutment piece to drive the positioning rod to insert into the positioning hole.

[0010] Furthermore, the hinge includes a connecting block located at one end of the connecting half-ring, and the opposite connecting blocks are connected by two connecting plates. The connecting plates are located on the upper and lower side walls of the connecting blocks, respectively, and the opposite connecting plates are provided with hinge rods that pass through the corresponding connecting blocks.

[0011] Furthermore, the locking component includes a mounting block located at the other end of the connecting half-ring, a locking bolt between opposing mounting blocks, the locking bolt passing through the mounting block, and a locking nut at both ends of the locking bolt.

[0012] Furthermore, the mounting assembly includes multiple mounting posts located on the lower side of the top cover. The mounting posts are provided with mounting holes. The mounting posts are arranged circumferentially along the top cover. A cavity is provided on the upper mounting ring of the screen frame at the highest position, corresponding to the mounting post. A slidable locking rod is provided in the cavity. An abutment plate is provided on the locking rod. A second spring is sleeved on the locking rod located in the cavity. The second spring is used to push the abutment plate to drive the locking rod to insert into the mounting hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the sealing component, enables the sliding drive block along the connecting groove to drive the blocking plate to slide along the arc groove, thereby enabling the blocking plate to close the discharge pipe, thus better preventing impurities in the material from being discharged from the discharge pipe and the material together through vibration without being fully filtered and removed.

[0015] This invention, through the setting of the installation components, allows the top cover to be fixedly installed on the screen frame located at the highest position. Thus, when the screen frame filters and screens powdery materials (such as manganese dioxide), the top cover blocks the screen frame at the highest position, thereby preventing the powdery material from floating out from the upper opening of the screen frame due to vibration. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a material filtration and impurity removal device according to the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the material filtration and impurity removal device of this utility model.

[0018] Figure 3 This is a schematic diagram of the internal sealing component of the sieve frame in this utility model.

[0019] Figure 4 This is a structural schematic diagram of the fixing component in this utility model.

[0020] Figure 5 This is a schematic diagram of the top cover in this utility model.

[0021] Figure 6 This is an enlarged structural diagram of part A in this utility model.

[0022] Figure 7 This is an enlarged structural diagram of part B in this utility model.

[0023] The meanings of the labels in the diagram are as follows: 100, base; 101, sliding column; 102, third spring; 103, discharge pipe; 104, connecting half ring; 105, mounting block; 106, locking nut; 107, locking bolt; 108, top cover; 109, stop block; 110, screen frame; 111, connecting groove;

[0024] 200. Screen cavity; 201. Arc-shaped block; 202. Blocking plate; 203. Mounting base; 204. Vibrating motor; 205. Lower mounting ring; 206. Upper mounting ring;

[0025] 300. Connecting plate;

[0026] 400, slot; 401, hinge rod;

[0027] 500, Mounting column; 501, Mounting hole; 502, Third inclined plane;

[0028] 600. Drive block; 601. Fixing plate; 602. First inclined surface; 603. Second inclined surface; 604. First spring; 605. Positioning rod; 606. Abutment piece;

[0029] 700, cavity; 701, locking rod; 702, abutment plate; 703, second spring; 705, positioning bolt. Detailed Implementation

[0030] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0031] The following is in conjunction with the appendix Figures 1-7 This embodiment will be described in further detail.

[0032] Combination Figures 1-7 As shown, a material filtration and impurity removal device in this embodiment includes a base 100, on which a mounting base 203 is provided; a screen frame 110 is stacked on the mounting base 203 by multiple fixing members; a screen cavity 200 is provided inside the screen frame 110, and a discharge pipe 103 communicating with the screen cavity 200 is provided on the outer wall of the screen frame 110; a sealing assembly for the discharge pipe 103 is provided inside the screen cavity 200, the sealing assembly including a slidable blocking plate 202 disposed inside the screen cavity 200; and a connecting plate 202 communicating with the screen cavity 200 is provided on the outer wall of the screen frame 110. A connecting groove 111 is arranged circumferentially along the screen frame 110. A driving block 600 is provided on one side of the blocking plate 202, extending through the connecting groove 111. The driving block 600 is used to drive the blocking plate 202 to open and close the discharge pipe 103. Positioning elements for positioning the driving block 600 are provided on the outer wall of the screen frame 110 at both ends of the connecting groove 111. A top cover 108 is provided on the screen frame 110 at the highest position through an installation assembly. The top cover 108 is used to seal the screen frame 110 at the highest position.

[0033] In this embodiment, the mounting base 203 slides on the mounting base 203 via multiple sliding columns 101. The lower end of the sliding column 101 is provided with a positioning nut. A third spring 102 is sleeved on the sliding column 101 located between the mounting base 203 and the base 100, so that the mounting base 203 can be installed, that is, the screen frame 110 on the mounting base 203 can be installed. The base 100 is provided with a vibration motor 204, which is used to drive the mounting base 203 to vibrate.

[0034] In actual use, the screen frame 110 is fixed to the mounting base 203 by fasteners. The arrangement of multiple fasteners allows adjacent screen frames 110 to be stacked and fixed in sequence. The sealing component can block the discharge pipe 103 inside the screen frame 110. At this time, the material is added to the screen frame 110 at the highest position, and the top cover 108 is installed on the screen frame 110 at the highest position by the mounting component. Since the aperture of the screen frame 110 decreases from top to bottom, the mounting base 203 is driven to vibrate by the vibration motor 204, which in turn causes the screen frame 110 to vibrate. This allows the material inside the screen frame 110 to be filtered and impurities removed through the screens of different apertures by vibration.

[0035] Specifically, the bottom of the sieve frame 110 located at the lowest position is provided with a sealing plate, thereby making the sieve frame 110 a collection frame to collect impurities and prevent them from accumulating on the mounting base 203.

[0036] In actual use, the side wall of the sieve cavity 200 is provided with an arc-shaped block 201 along its circumference. The arc-shaped block 201 has an arc-shaped groove with an opening at the lower end. The arc-shaped groove is T-shaped. The upper end of the blocking plate 202 is slidably installed in the arc-shaped groove. The connecting groove 111 is connected to the arc-shaped groove. Specifically, through the setting of the blocking plate 202 and the driving block 600, the driving block 600 slides along the connecting groove 111, so that the driving block 600 can drive the blocking plate 202 to slide along the arc-shaped groove. This allows the blocking plate 202 to close the discharge pipe 103, thereby better preventing impurities in the material from being discharged from the discharge pipe 103 along with the material due to vibration without being fully filtered and removed, which would affect the purity and quality of the material. At the same time, the driving block 600 drives the blocking plate 202 to open the discharge pipe 103, so that the material in the sieve cavity 200 can be discharged through the discharge pipe 103.

[0037] Among them, one side wall of the blocking plate 202 slides against the corresponding side wall of the screen cavity 200, thereby enabling the output pipe 103 to be better blocked;

[0038] The two positioning components are designed such that when the blocking plate 202 closes the discharge pipe 103, one positioning component can position the drive block 600, thus effectively preventing the blocking plate 202 from opening the discharge pipe 103 due to vibration; when the blocking plate 202 opens the discharge pipe 103, the other positioning component positions the drive block 600, thus preventing the blocking plate 202 from closing the discharge pipe 103 due to vibration and affecting material discharge.

[0039] The top cover 108 is fixedly installed on the screen frame 110 at the highest position by the installation components. When the screen frame 110 filters and screens powdery materials (such as manganese dioxide), the top cover 108 blocks the screen frame 110 at the highest position, thereby preventing the powdery materials from floating out of the upper opening of the screen frame 110 due to vibration.

[0040] Combination Figure 4 As shown, in this embodiment, the upper and lower ends of the screen frame 110 extend outward to form an upper mounting ring 206 and a lower mounting ring 205, respectively; the fixing member includes two interconnected connecting half-rings 104, one end of which is hinged together by a hinge member; a slot 400 is provided on the connecting half-ring 104 along its circumference, and the upper mounting ring 206 and lower mounting ring 205 of adjacent screen frames 110 are inserted into the slot 400 to fix adjacent screen frames 110; the other end of the two connecting half-rings 104 is provided with a locking member, which is used to fix the two connecting half-rings 104.

[0041] In actual use, the two ends and the inner side of the connecting half ring 104 are open. By using the hinge, the two connecting half rings 104 are rotated so that they can move away from each other. The inner opening of the connecting half ring 104 is aligned with the edge of the mounting base 203 and the lower mounting ring 205 of the screen frame 110 at the lowest position. At this time, by rotating the two connecting half rings 104, the edge of the mounting base 203 and the lower mounting ring 205 of the screen frame 110 at the lowest position can be engaged in the slot 400, thereby fixing the screen frame 110 at the lowest position. The locking member makes the two connecting half rings 104 fixed together, so that the screen frame 110 at the lowest position can be better installed on the mounting base 203.

[0042] In actual use, by inserting the upper mounting ring 206 and lower mounting ring 205 of two adjacent screen frames 110 into the slot 400, and locking the two connecting half rings 104 with locking parts, the two adjacent screen frames 110 can be fixedly installed.

[0043] The hinge includes a connecting block located at one end of the connecting half-ring 104. The opposing connecting blocks are connected by two connecting plates 300, which are located on the upper and lower side walls of the connecting blocks respectively. A hinge rod 401 is provided between the opposing connecting plates 300, and the hinge rod 401 passes through the corresponding connecting block. This allows the two connecting blocks to be rotatably mounted on the corresponding hinge rod 401, thereby enabling the two connecting half-rings 104 to be hinged together so that the upper mounting ring 206 and lower mounting ring 205 of the adjacent screen frame 110 can be locked into the slot 400 for fixation.

[0044] The locking component includes a mounting block 105 located at the other end of the connecting half-ring 104, and a locking bolt 107 is provided between the opposite mounting blocks 105. The locking bolt 107 passes through the mounting block 105, and a locking nut 106 is provided at both ends of the locking bolt 107.

[0045] Specifically, by tightening the two locking nuts 106, the two locking nuts 106 can be pressed against the corresponding mounting block 105, thereby pressing and fixing the mounting block 105, which in turn can press and fix the two connecting half rings 104, so that the adjacent screen frames 110 can be better fixed.

[0046] Combination Figures 1-6As shown, in this embodiment, the drive block 600 is provided with a positioning hole, and the opposite side wall of the drive block 600 is provided with a first inclined surface 602. The positioning component includes a fixing plate 601 provided on the side wall of the screen frame 110. The fixing plate 601 is provided with a slidable positioning rod 605. The lower end of the positioning rod 605 is provided with a second inclined surface 603 that is adapted to the first inclined surface 602. The positioning rod 605 is also provided with an abutment piece 606. A first spring 604 is sleeved on the positioning rod 605 located between the abutment piece 606 and the fixing plate 601. The first spring 604 is used to push the abutment piece 606 to drive the positioning rod 605 to insert into the positioning hole.

[0047] In actual use, the fixing plate 601 is located above the connecting groove 111. When it is necessary to block the discharge pipe 103, the sliding drive block 600 can slide along the connecting groove 111. When the first inclined surface 602 on one side wall of the drive block 600 is in contact with the second inclined surface 603 on its positioning rod 605, the drive block 600 is continued to slide, so that the first inclined surface 602 can slide and press the second inclined surface 603, so that the second inclined surface 603 can drive the positioning rod 605 to move upward, so that the positioning rod 605 can... When the positioning hole and positioning rod 605 are aligned, the positioning rod 605 abuts against the upper side of the drive block 600. Under the action of the first spring 604, the first spring 604 can push the abutment piece 606 to drive the positioning rod 605 into the positioning hole, thereby fixing the drive block 600. At the same time, when it is necessary to release the positioning rod 605 from the drive block 600, by lifting the positioning rod 605, the positioning rod 605 can drive the abutment piece 606 to move upward and compress the first spring 604, so that the positioning rod 605 can disengage from the positioning hole, thereby releasing the positioning of the drive block 600.

[0048] In actual use, when it is necessary to open the discharge pipe 103, the positioning of the drive block 600 by one of its positioning components is released, and the drive block 600 is slid so that the first inclined surface 602 on the other side wall of the drive block 600 can fit with the second inclined surface 603 on the other positioning rod 605. At this time, the drive block 600 is slid further so that the first inclined surface 602 can slide and press the second inclined surface 603, so that the second inclined surface 603 can drive the other positioning rod 605 to move upward, so that the positioning rod 605 can abut against the upper side of the drive block 600. When the positioning hole is aligned with the positioning rod 605, under the action of the first spring 604, the first spring 604 can push the abutment piece 606 to drive the positioning rod 605 to insert into the positioning hole, thereby fixing the drive block 600.

[0049] The positioning hole and the positioning rod 605 are both square and are compatible with each other, so that the positioning rod 605 will not wobble in the positioning hole, and thus the driving block 600 will not wobble, so that the driving block 600 can be positioned better.

[0050] Combination Figures 2-7 As shown, in this embodiment, the mounting assembly includes a plurality of mounting posts 500 disposed on the lower side of the top cover 108. The mounting posts 500 are provided with mounting holes 501. The mounting posts 500 are arranged circumferentially along the top cover 108. The upper mounting ring 206 of the highest screen frame 110 is provided with a cavity 700 corresponding to the mounting posts 500. A slidable locking rod 701 is provided in the cavity 700. An abutment plate 702 is provided on the locking rod 701. A second spring 703 is sleeved on the locking rod 701 located in the cavity 700. The second spring 703 is used to push the abutment plate 702 to drive the locking rod 701 to insert into the mounting hole 501.

[0051] In this embodiment, a third inclined surface 502 is provided on the lower end of the mounting post 500, and a fourth inclined surface similar to the third inclined surface 502 is provided at one end of the locking rod 701.

[0052] In actual use, the upper side of the upper mounting ring 206 of the screen frame 110 is provided with a through hole corresponding to the cavity 700. The mounting post 500 is aligned with the through hole and inserted into the cavity 700 so that the third inclined surface 502 can fit with the fourth inclined surface. At this time, the top cover 108 is moved down so that the third inclined surface 502 can slide and press the fourth inclined surface, so that the fourth inclined surface can drive the locking rod 701 to drive the abutment plate 702 to compress the second spring 703 and move. When the locking rod 701 is aligned with the mounting hole 501, the second spring 703 can push the abutment plate 702 to drive the locking rod 701 to be inserted into the mounting hole 501 under the action of the second spring 703. This allows the locking rod 701 to lock the mounting post 500, preventing it from moving up, so that the top cover 108 can be fixedly installed on the screen frame 110.

[0053] In actual use, in order to facilitate the operator to remove the top cover 108, in this embodiment, the other end of the locking rod 701 extends through the cavity 700 and is provided with a stop block 109 on its extended end, and a positioning bolt 705 is threaded on the stop block 109.

[0054] Specifically, when it is necessary to remove the top cover 108, by pulling the stop block 109 outward, the stop block 109 can drive the locking rod 701 to drive the abutment plate 702 to move outward, so that the locking rod 701 can disengage from the mounting hole 501, that is, the locking rod 701 releases the locking of the mounting column 500. At this time, the positioning bolt 705 is turned so that one end of the positioning bolt 705 can abut against the outer wall of the mounting ring 206 on the screen frame 110. At this time, the positioning bolt 705 can always keep the locking rod 701 released from the locking of the mounting column 500, thereby making it easy for the operator to remove the top cover 108.

[0055] The positioning bolt 705 is threaded onto the stop 109, which can better prevent the positioning bolt 705 from being lost.

[0056] The cavity 700 and the abutment plate 702 are both square and are compatible with each other, so that the side wall of the abutment plate 702 can slide against the corresponding side wall of the cavity 700, thereby preventing the locking rod 701 from rotating inside the cavity 700, and ensuring that the fourth inclined surface can always be in contact with the third inclined surface 502.

[0057] The mounting hole 501 and the locking rod 701 are both square and compatible, allowing the side wall of the locking rod 701 to slide against the corresponding side wall of the mounting hole 501. This prevents the locking rod 701 from shaking inside the mounting hole 501, thus preventing the top cover 108 from moving vertically and making the installation of the top cover 108 on the screen frame 110 more stable.

[0058] In practical use, when materials need to be filtered and impurities removed, multiple screen frames 110 are stacked sequentially on the mounting base 203, and the screen frame 110 at the lowest position is fixed to the mounting base 203 by fasteners. Adjacent screen frames 110 are then fixed sequentially by multiple fasteners. Next, the driving block 600 slides along the connecting groove 111, causing the blocking plate 202 to move along the arc-shaped groove. When the driving block 600 slides to one end of the connecting groove 111, a positioning component positions the driving block 600. The filtered material is then directly added... The material is moved to the screen frame 110 at the highest position, and the top cover 108 is fixed to the screen frame 110 at the highest position by the mounting assembly. At this time, the mounting base 203 is driven to vibrate by the vibration motor 204, so that the material can be filtered and impurities removed. After the material in the screen cavity 200 has been fully filtered, one of its positioning members is removed from the driving block 600, and the driving block 600 is slid to the other end of the connecting groove 111, so that the other positioning member can position the driving block 600, so that the blocking plate 202 can open the discharge pipe 103, so that the material can be discharged from the screen frame 110, thereby completing the filtration and impurity removal of the material.

[0059] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A material filtration and impurity removal device, comprising a base (100) and a mounting seat (203) on the base (100); characterized in that: A screen frame (110) is stacked on the mounting base (203) by multiple fasteners; a screen cavity (200) is provided inside the screen frame (110); a discharge pipe (103) communicating with the screen cavity (200) is provided on the outer wall of the screen frame (110); a sealing assembly for sealing the discharge pipe (103) is provided inside the screen cavity (200); the sealing assembly includes a slidable blocking plate (202) located inside the screen cavity (200); a connecting groove (111) communicating with the screen cavity (200) is provided on the outer wall of the screen frame (110); the connecting groove (111) runs along the screen frame (110). The circumferential arrangement includes a drive block (600) extending through the connecting groove (111) on one side of the blocking plate (202). The drive block (600) is used to drive the blocking plate (202) to open and close the discharge pipe (103). On the outer wall of the screen frame (110) and at both ends of the connecting groove (111), there are positioning elements for positioning the drive block (600). The screen frame (110) at the highest position is provided with a top cover (108) by means of an installation assembly. The top cover (108) is used to seal the screen frame (110) at the highest position.

2. The material filtration and impurity removal device according to claim 1, characterized in that: The upper and lower ends of the screen frame (110) extend outward to form an upper mounting ring (206) and a lower mounting ring (205), respectively. The fastener includes two interlocking connecting half-rings (104), one end of which is hinged to the other end. The connecting half-rings (104) are provided with a groove (400) along their circumference. The upper mounting ring (206) and lower mounting ring (205) of the adjacent screen frames (110) are inserted into the groove (400) to fix the adjacent screen frames (110). The other end of the two connecting half-rings (104) is provided with a locking member to fix the two connecting half-rings (104).

3. The material filtration and impurity removal device according to claim 1, characterized in that: An arc-shaped block (201) is provided on the side wall of the sieve cavity (200) along its circumference. An arc-shaped groove with an opening at the lower end is provided on the upper side of the arc-shaped block (201). The arc-shaped groove is T-shaped. The upper end of the blocking plate (202) is slidably installed in the arc-shaped groove. The connecting groove (111) is connected to the arc-shaped groove.

4. The material filtration and impurity removal device according to claim 1, characterized in that: The drive block (600) is provided with a positioning hole, and the side wall opposite the drive block (600) is provided with a first inclined surface (602). The positioning component includes a fixing plate (601) provided on the side wall of the screen frame (110). The fixing plate (601) is provided with a slidable positioning rod (605). The lower end of the positioning rod (605) is provided with a second inclined surface (603) that is adapted to the first inclined surface (602). The positioning rod (605) is also provided with an abutment piece (606). A first spring (604) is sleeved on the positioning rod (605) located between the abutment piece (606) and the fixing plate (601). The first spring (604) is used to push the abutment piece (606) to drive the positioning rod (605) to insert into the positioning hole.

5. The material filtration and impurity removal device according to claim 2, characterized in that: The hinge includes a connecting block located at one end of the connecting half ring (104). The opposite connecting blocks are connected by two connecting plates (300). The connecting plates (300) are located on the upper and lower side walls of the connecting blocks respectively. The opposite connecting plates (300) are provided with hinge rods (401), which pass through the corresponding connecting blocks.

6. The material filtration and impurity removal device according to claim 2, characterized in that: The locking component includes a mounting block (105) located at the other end of the connecting half ring (104), and a locking bolt (107) is provided between the opposite mounting blocks (105). The locking bolt (107) passes through the mounting block (105), and both ends of the locking bolt (107) are provided with locking nuts (106).

7. The material filtration and impurity removal device according to claim 2, characterized in that: The mounting assembly includes multiple mounting posts (500) located on the lower side of the top cover (108). The mounting posts (500) are provided with mounting holes (501). The mounting posts (500) are arranged circumferentially along the top cover (108). A cavity (700) is provided on the upper mounting ring (206) of the highest screen frame (110) corresponding to the mounting posts (500). A slidable locking rod (701) is provided in the cavity (700). An abutment plate (702) is provided on the locking rod (701). A second spring (703) is sleeved on the locking rod (701) located in the cavity (700). The second spring (703) is used to push the abutment plate (702) to drive the locking rod (701) to insert into the mounting hole (501).

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