Screening equipment for processing iron oxide black

Abstract

The invention belongs to the technical field of screening equipment, and discloses screening equipment for iron oxide black processing, which comprises a screening box, the left end of the screening box is hinged with a sealing door plate, and the top end of the screening box is fixedly provided with a top cover; the horizontal pushing mechanism is arranged in the screening box; and the driving mechanism is arranged outside the screening box. Through arrangement of a rotating rod, a first round block, a flat push rod, a driving rod and a second round block, after a driving motor is started, a driving shaft can drive the driving rod and the second round block to rotate, so that the outer surface of the second round block generates thrust on the inner surface of the top end of the rotating rod, and the rotating rod is pushed to rotate with a fixed rod as the axis; further, the inner surface of the bottom end of the rotating rod generates thrust on the first round block to push the first round block to drive the connecting rod and the horizontal push rod to reciprocate, so that the situation that the screening efficiency of the screening equipment is affected due to accumulation of the iron oxide black can be prevented.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of screening equipment, and particularly relates to a screening equipment for processing iron oxide black. BACKGROUND

[0002] Iron oxide black, also known as iron black, is a black inorganic pigment mainly composed of iron trioxide, which is an addition product of iron oxide and ferrous oxide. The iron oxide black is black powder in appearance, has a refractive index of 2.42, and the particles are cubic. The iron oxide black has very high hiding power, is very stable to sunlight and atmosphere, is resistant to all alkalis, can be dissolved in acid, and has strong magnetism. The iron oxide black is easily oxidized into iron oxide red when calcined in the presence of sufficient air.

[0003] In the process of processing iron oxide black, in order to remove impurities and large particles in the iron oxide black, a corresponding screening equipment is needed to vibrate screen the iron oxide black. However, in the actual use process of the existing screening equipment, due to the limitation of structure and design, the iron oxide black will be accumulated together after entering the inside of the screening equipment from the feeding port, thereby increasing the screening time of the screening equipment and reducing the screening efficiency of the screening equipment. Therefore, improvement is needed. SUMMARY

[0004] The purpose of the present application is to provide a screening equipment for processing iron oxide black to solve the problems in the background.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a screening equipment for processing iron oxide black, comprising:

[0006] The screening box is hinged with a sealing door plate at the left end, and a top cover is fixedly installed at the top end of the screening box.

[0007] The flat pushing mechanism is arranged in the inside of the screening box.

[0008] The driving mechanism is arranged outside the screening box.

[0009] The flat pushing mechanism comprises a fixed rod, the fixed rod is fixedly installed on the right side inner wall of the screening box, a rotating rod is movably sleeved on the left side outer surface of the fixed rod, a first circular block is movably sleeved on the top of the inner surface of the bottom end of the rotating rod, a connecting rod is fixedly sleeved on the right end of the first circular block, the left end of the connecting rod and the right end of the rotating rod are movably connected, a flat pushing rod is fixedly installed on the bottom end of the connecting rod, the flat pushing rod is movably sleeved on the left and right side inner walls of the screening box, and the rotating rod moves the flat pushing rod.

[0010] As a preferred technical scheme of the present application, the driving mechanism comprises:

[0011] A driving motor is fixedly installed at the top of the right end of the screening box, the other end of the output shaft of the driving motor is fixedly sleeved with a driving shaft, and the left end of the driving shaft penetrates through the screening box and extends into the inside of the screening box.

[0012] A driving rod is fixedly sleeved at the left side of the outer surface of the driving shaft, the right end of the driving rod is movably connected with the right side inner wall of the screening box, the left end of the driving rod is movably connected with the right end of the rotating rod, the bottom end of the driving rod is fixedly sleeved with a second circular block, and the outer surface of the second circular block is movably sleeved with the inner surface of the top end of the rotating rod.

[0013] As a preferred technical scheme of the present application, the middle part of the top end of the top cover is fixedly sleeved with a feeding hopper, the middle part of the bottom end of the feeding hopper is fixedly installed with a supporting rod, and the top end of the supporting rod is fixedly installed with a limiting rod.

[0014] As a preferred technical scheme of the present application, the bottom of the outer surface of the limiting rod is movably sleeved with a dredging rod, the outer surface of the dredging rod is movably sleeved with the inner surface of the feeding hopper, the right side of the bottom end of the dredging rod is fixedly installed with a vertical rod, and the bottom end of the vertical rod is fixedly installed with a horizontal rod.

[0015] As a preferred technical scheme of the present application, the right side of the bottom end of the top cover is fixedly installed with a first motor, the other end of the output shaft of the first motor is fixedly sleeved with a first rotating shaft, the outer surface of the first rotating shaft is fixedly sleeved with a short rod, the bottom of the left end of the short rod is hinged with a long rod, the other end of the long rod is hinged with the right side of the top end of the horizontal rod, and the long rod will cause the horizontal rod to move.

[0016] As a preferred technical scheme of the present application, the bottom of the right end of the screening box is fixedly installed with a second motor, the other end of the output shaft of the second motor is fixedly sleeved with a second rotating shaft, the left end of the second rotating shaft penetrates through the screening box and extends to the left side of the outer surface of the screening box, and the left and right ends of the outer surface of the second rotating shaft are fixedly sleeved with elliptical blocks, respectively.

[0017] As a preferred technical scheme of the present application, the bottom of the left and right side inner walls of the screening box is movably sleeved with a mounting block, respectively, the number of the mounting blocks is two, the top end of each of the two mounting blocks is fixedly installed with a positioning block, the number of the positioning blocks is two, the outer surface of each of the two positioning blocks is movably sleeved with a sieve plate, the outer surface of the sieve plate is movably sleeved with the inner surface of the screening box, the bottom end of the sieve plate is movably connected with the top end of the elliptical block, the left and right sides of the bottom end of the sieve plate are movably connected with the top end of the two mounting blocks, respectively, the bottom end of each of the two mounting blocks is fixedly installed with a first spring, and the other end of the first spring is fixedly connected with the inner surface of the screening box.

[0018] As a preferred embodiment of the present invention, handles are movably sleeved at the bottom of the two mounting blocks. Rotating plates located inside the two mounting blocks are fixedly sleeved on the left and right sides of the outer surface of the handles, respectively. Connecting plates are hinged to the left and right sides of the rear end of the rotating plates, and uprights are hinged to the other end of the connecting plates. There are four uprights, which are movably sleeved at the left and right ends inside the two mounting blocks and the positioning block, respectively. The rotating plates will cause the uprights to move.

[0019] As a preferred embodiment of the present invention, a second spring located inside two positioning blocks is fixedly installed on the top of the opposite sides of the four uprights, and a locking block is fixedly installed on the top of the opposite sides of the four uprights, with the other end of the locking block penetrating the positioning block and extending into the interior of the sieve plate.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention, by setting up a rotating rod, a first circular block, a flat push rod, a drive rod, and a second circular block, when the drive motor is started, will cause the drive shaft to drive the drive rod and the second circular block to rotate, thereby causing the outer surface of the second circular block to generate a thrust on the inner surface of the top of the rotating rod, pushing the rotating rod to rotate around the fixed rod as the axis, and then causing the inner surface of the bottom of the rotating rod to generate a thrust on the first circular block, pushing the first circular block to reciprocate along with the connecting rod and the flat push rod. This can prevent iron oxide black from accumulating together and affecting the screening efficiency of the screening equipment.

[0022] 2. This invention, by setting up a clearing rod, a crossbar, a first motor, a short rod, and a long rod, will cause the first rotating shaft to drive the short rod to rotate when the first motor is started. Since the upper and lower ends of the long rod are hinged to the short rod and the crossbar respectively, the long rod will generate a pulling force on the crossbar as the short rod rotates, pulling the crossbar, the vertical rod, and the clearing rod to move along the outer surface of the limiting rod. This can prevent iron oxide black from clogging the bottom of the feed hopper and affecting the normal feeding of the screening equipment.

[0023] 3. This invention, by setting up a handle, a rotating plate, a connecting plate, a vertical rod, and a locking block, allows the rotating plate to rotate when the handle is turned, causing the connecting plate to rotate along with the rotating plate. This, in turn, causes the connecting plate to exert a pulling force on the vertical rod, pulling the vertical rod and moving the locking block to compress the second spring. When the locking block separates from the screen plate, the locking block can be released from locking the screen plate, thus achieving quick disassembly of the screen plate and facilitating cleaning of the screen plate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2This is a cross-sectional view of the front of the present invention;

[0026] Figure 3 This is a schematic cross-sectional view of the side of the present invention;

[0027] Figure 4 This is a cross-sectional view of the mounting block of the present invention;

[0028] Figure 5 for Figure 2 A magnified schematic diagram of the local structure at point A;

[0029] Figure 6 for Figure 2 A magnified view of the structure at point B in the middle;

[0030] Figure 7 for Figure 3 A magnified schematic diagram of the local structure at point C;

[0031] Figure 8 for Figure 4 A magnified schematic diagram of the structure at point D.

[0032] In the diagram: 1. Screening box; 2. Sealed door panel; 3. Top cover; 4. Pushing mechanism; 401. Fixed rod; 402. Rotating rod; 403. First circular block; 404. Connecting rod; 405. Pushing rod; 5. Drive mechanism; 501. Drive motor; 502. Drive shaft; 503. Drive rod; 504. Second circular block; 6. Feed hopper; 7. Support rod; 8. Limiting rod; 9. Unblocking rod; 10. Vertical rod; 11. Horizontal rod; 12. First motor; 13. First rotating shaft; 14. Short rod; 15. Long rod; 16. Second motor; 17. Second rotating shaft; 18. Elliptical block; 19. Mounting block; 20. Positioning block; 21. Screen plate; 22. First spring; 23. Handle; 24. Rotating plate; 25. Connecting plate; 26. Vertical rod; 27. Second spring; 28. Locking block. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown, this embodiment of the invention provides a screening device for processing iron oxide black, comprising:

[0035] Screening box 1, with a sealing door panel 2 hinged to the left end of screening box 1, and a top cover 3 fixedly installed on the top of screening box 1;

[0036] The horizontal pushing mechanism 4 is located inside the screening box 1;

[0037] Drive mechanism 5 is located outside the screening box 1;

[0038] The flat pushing mechanism 4 includes a fixed rod 401, which is fixedly installed on the right inner wall of the screening box 1. A rotating rod 402 is movably sleeved on the left side of the outer surface of the fixed rod 401. A first round block 403 is movably sleeved on the top of the inner surface of the bottom end of the rotating rod 402. A connecting rod 404 is fixedly sleeved on the right end of the first round block 403. The left end of the connecting rod 404 is movably connected to the right end of the rotating rod 402. A flat pushing rod 405 is fixedly installed on the bottom end of the connecting rod 404. The left and right ends of the flat pushing rod 405 are movably sleeved on the left and right inner walls of the screening box 1, respectively. The rotating rod 402 will cause the flat pushing rod 405 to move.

[0039] When the top of the rotating rod 402 is pushed, it will rotate around the fixed rod 401. Since the outer surface of the first circular block 403 and the inner surface of the bottom end of the rotating rod 402 are movably connected, as the rotating rod 402 rotates, the inner surface of the bottom end of the rotating rod 402 will generate a thrust on the outer surface of the first circular block 403, pushing the first circular block 403 and the connecting rod 404 to move. This causes the flat push rod 405, which is fixedly connected to the connecting rod 404, to move along the inner surface of the screening box 1, thereby preventing iron oxide black from accumulating together and reducing the screening rate of the screening equipment.

[0040] The drive mechanism 5 includes:

[0041] Drive motor 501 is fixedly installed on the top of the right end of screening box 1. The other end of the output shaft of drive motor 501 is fixedly sleeved with drive shaft 502. The left end of drive shaft 502 passes through screening box 1 and extends into the interior of screening box 1.

[0042] The drive rod 503 is fixedly sleeved on the left side of the outer surface of the drive shaft 502. The right end of the drive rod 503 is movably connected to the inner wall of the right side of the screening box 1. The left end of the drive rod 503 is movably connected to the right end of the rotating rod 402. The bottom end of the drive rod 503 is fixedly sleeved with a second round block 504. The outer surface of the second round block 504 is movably sleeved with the inner surface of the top end of the rotating rod 402.

[0043] When the drive motor 501 starts, the drive shaft 502 will drive the drive rod 503 and the second circular block 504 to rotate, thereby causing the outer surface of the second circular block 504 to generate a thrust on the inner surface of the top of the rotating rod 402.

[0044] Among them, a feed hopper 6 is fixedly sleeved at the middle of the top of the top cover 3, a support rod 7 is fixedly installed at the middle of the bottom of the feed hopper 6, and a limit rod 8 is fixedly installed at the top of the support rod 7.

[0045] The presence of feed hopper 6 facilitates the entry of iron oxide black into the screening equipment, while the presence of support rod 7 and limiting rod 8 provides support and limitation.

[0046] Among them, the bottom of the outer surface of the limiting rod 8 is movably sleeved with the unblocking rod 9, the outer surface of the unblocking rod 9 is movably sleeved with the inner surface of the feed hopper 6, the right side of the bottom end of the unblocking rod 9 is fixedly installed with the vertical rod 10, and the bottom end of the vertical rod 10 is fixedly installed with the horizontal rod 11.

[0047] When the unblocking rod 9 moves along the outer surface of the limiting rod 8, it can unblock the bottom of the feed hopper 6, thereby preventing iron oxide black from clogging the bottom of the feed hopper 6.

[0048] The top cover 3 has a first motor 12 fixedly installed on the right side of the bottom end. The other end of the output shaft of the first motor 12 is fixedly sleeved with a first rotating shaft 13. A short rod 14 is fixedly sleeved on the outer surface of the first rotating shaft 13. A long rod 15 is hinged to the bottom of the left end of the short rod 14. The other end of the long rod 15 is hinged to the right side of the top of the crossbar 11. The long rod 15 will cause the crossbar 11 to move.

[0049] When the short rod 14 rotates along with the top of the long rod 15, the bottom of the long rod 15 will exert a pulling force on the horizontal rod 11, causing the horizontal rod 11 to move along with the vertical rod 10.

[0050] The bottom right end of the screening box 1 is fixedly installed with a second motor 16. The other end of the output shaft of the second motor 16 is fixedly sleeved with a second rotating shaft 17. The left end of the second rotating shaft 17 passes through the screening box 1 and extends to the left side of the outer surface of the screening box 1. The left and right ends of the outer surface of the second rotating shaft 17 are respectively fixedly sleeved with elliptical blocks 18.

[0051] When the second motor 16 is started, the second rotating shaft 17 will drive the elliptical block 18 to rotate.

[0052] Among them, two mounting blocks 19 are movably sleeved on the bottom of the inner walls on the left and right sides of the screening box 1. The top of the two mounting blocks 19 is fixedly installed with positioning blocks 20. The outer surface of the two positioning blocks 20 is movably sleeved with a screen plate 21. The outer surface of the screen plate 21 is movably sleeved with the inner surface of the screening box 1. The bottom end of the screen plate 21 is movably connected with the top end of the elliptical block 18. The left and right sides of the bottom end of the screen plate 21 are movably connected with the top ends of the two mounting blocks 19. The bottom ends of the two mounting blocks 19 are fixedly installed with a first spring 22. The other end of the first spring 22 is fixedly connected with the inner surface of the screening box 1.

[0053] Due to the restoring effect of the first spring 22, when the elliptical block 18 rotates, the sieve plate 21, along with the positioning block 20 and the mounting block 19, will vibrate.

[0054] Each of the two mounting blocks 19 has a handle 23 movably sleeved at its bottom. Rotating plates 24 located inside the two mounting blocks 19 are fixedly sleeved on the left and right sides of the outer surface of the handle 23. Connecting plates 25 are hinged to the left and right sides of the rear end of the rotating plates 24. The other end of the connecting plates 25 is hinged to a vertical rod 26. There are four vertical rods 26. The four vertical rods 26 are movably sleeved at the left and right ends inside the two mounting blocks 19 and the positioning block 20. The rotating plates 24 will cause the vertical rods 26 to move.

[0055] When the handle 23 rotates along with the rotating plate 24, one end of the connecting plate 25 will rotate along with it, thereby generating a pulling force on the upright 26 at the other end of the connecting plate 25, which will pull the upright 26 to move.

[0056] Among them, the top of the opposite sides of the four uprights 26 are respectively fixedly installed with second springs 27 located inside the two positioning blocks 20, and the top of the opposite sides of the four uprights 26 are respectively fixedly installed with locking blocks 28. The other end of the locking block 28 passes through the positioning block 20 and extends into the interior of the sieve plate 21.

[0057] Due to the restoring effect of the second spring 27, the upright 26, along with the locking block 28, will move and then return to its original position.

[0058] Working principle and usage process:

[0059] First, the operator starts the second motor 16, causing the second rotating shaft 17 to drive the elliptical block 18 to rotate. Since the elliptical block 18 is movably connected to the screen plate 21, as the elliptical block 18 rotates, the screen plate 21 will vibrate along with the positioning block 20 and the mounting block 19, in conjunction with the first spring 22. Then, the operator pours the iron oxide black into the feed hopper 6 and starts the first motor 12, causing the first rotating shaft 13 to drive the top of the short rod 14 and the long rod 15 to rotate. This causes the bottom of the long rod 15 to exert a pulling force on the top of the crossbar 11, pulling the crossbar 11 through the vertical rod 10 and causing the unblocking rod 9 to move along the outer surface of the limiting rod 8, thereby preventing the iron oxide black from clogging at the bottom of the feed hopper 6 and affecting normal material feeding.

[0060] The iron oxide black entering the screening equipment will be discharged after being screened by the vibration of the screen plate 21. At the same time as the iron oxide black falls to the top of the screen plate 21, the operator starts the drive motor 501, which causes the drive shaft 502 to drive the drive rod 503 and the second circular block 504 to rotate. Since the inner surfaces of the upper and lower ends of the rotating rod 402 are respectively connected to the outer surfaces of the second circular block 504 and the first circular block 403, the rotating rod 402 will rotate around the fixed rod 401 as the axis as the second circular block 504 rotates. This causes the inner surface of the bottom end of the rotating rod 402 to generate a thrust on the outer surface of the first circular block 403, pushing the first circular block 403 to reciprocate through the connecting rod 404 and the flat push rod 405. This prevents the iron oxide black from accumulating together and affecting the screening efficiency of the screening equipment.

[0061] When the sieve plate 21 needs cleaning, the operator opens the sealing door 2 after screening and then turns the handle 23, causing the rotating plate 24 to rotate along with the connecting plate 25. This causes the other end of the connecting plate 25 to exert a pulling force on the upright rod 26, pulling the upright rod 26 and causing the locking block 28 to move and compress the second spring 27 until the locking block 28 separates from the sieve plate 21. Then the operator can pull out the sieve plate 21 for cleaning. With the cooperation of various mechanisms, the sieve plate 21 can be quickly disassembled, thereby improving the convenience of using the screening equipment.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening device for processing iron oxide black, characterized in that, Including: A screening box (1) is provided with a sealing door panel (2) hinged to the left end of the screening box (1) and a top cover (3) is fixedly installed on the top of the screening box (1). A horizontal pushing mechanism (4) is disposed inside the screening box (1); A drive mechanism (5) is disposed outside the screening box (1); The flat pushing mechanism (4) includes a fixed rod (401), which is fixedly installed on the inner right side of the screening box (1). A rotating rod (402) is movably sleeved on the left side of the outer surface of the fixed rod (401). A first round block (403) is movably sleeved on the top of the inner surface of the bottom end of the rotating rod (402). A connecting rod (404) is fixedly sleeved on the right end of the first round block (403). The left end of the connecting rod (404) and the right end of the rotating rod (402) are movably connected. A flat pushing rod (405) is fixedly installed on the bottom end of the connecting rod (404). The left and right ends of the flat pushing rod (405) are movably sleeved on the inner walls of the left and right sides of the screening box (1), respectively. The rotating rod (402) will cause the flat pushing rod (405) to move.

2. The screening equipment for processing iron oxide black according to claim 1, characterized in that: The drive mechanism (5) includes: A drive motor (501) is fixedly installed on the top of the right end of the screening box (1). The other end of the output shaft of the drive motor (501) is fixedly sleeved with a drive shaft (502). The left end of the drive shaft (502) passes through the screening box (1) and extends into the interior of the screening box (1). A drive rod (503) is fixedly sleeved on the left side of the outer surface of the drive shaft (502). The right end of the drive rod (503) is movably connected to the inner wall of the right side of the screening box (1). The left end of the drive rod (503) is movably connected to the right end of the rotating rod (402). A second round block (504) is fixedly sleeved on the bottom end of the drive rod (503). The outer surface of the second round block (504) is movably sleeved on the inner surface of the top end of the rotating rod (402).

3. The screening equipment for processing iron oxide black according to claim 1, characterized in that: A feed hopper (6) is fixedly sleeved at the middle of the top of the top cover (3), a support rod (7) is fixedly installed at the middle of the bottom of the feed hopper (6), and a limit rod (8) is fixedly installed at the top of the support rod (7).

4. A screening device for processing iron oxide black according to claim 3, characterized in that: A dredging rod (9) is movably sleeved at the bottom of the outer surface of the limiting rod (8). The outer surface of the dredging rod (9) is movably sleeved with the inner surface of the feed hopper (6). A vertical rod (10) is fixedly installed on the right side of the bottom end of the dredging rod (9). A horizontal rod (11) is fixedly installed at the bottom end of the vertical rod (10).

5. A screening device for processing iron oxide black according to claim 1, characterized in that: A first motor (12) is fixedly installed on the right side of the bottom end of the top cover (3). A first rotating shaft (13) is fixedly sleeved on the other end of the output shaft of the first motor (12). A short rod (14) is fixedly sleeved on the outer surface of the first rotating shaft (13). A long rod (15) is hinged to the bottom of the left end of the short rod (14). The other end of the long rod (15) is hinged to the right side of the top end of the crossbar (11). The long rod (15) will cause the crossbar (11) to move.

6. A screening device for processing iron oxide black according to claim 1, characterized in that: A second motor (16) is fixedly installed at the bottom right end of the screening box (1). A second rotating shaft (17) is fixedly sleeved at the other end of the output shaft of the second motor (16). The left end of the second rotating shaft (17) passes through the screening box (1) and extends to the left side of the outer surface of the screening box (1). Elliptical blocks (18) are fixedly sleeved at the left and right ends of the outer surface of the second rotating shaft (17).

7. A screening device for processing iron oxide black according to claim 1, characterized in that: The bottom of the inner walls on the left and right sides of the screening box (1) is movably fitted with two mounting blocks (19). The top of each of the two mounting blocks (19) is fixedly fitted with a positioning block (20). The outer surface of each of the two positioning blocks (20) is movably fitted with a sieve plate (21). The outer surface of the sieve plate (21) is movably fitted with the inner surface of the screening box (1). The bottom end of the sieve plate (21) is movably connected to the top of the elliptical block (18). The left and right sides of the bottom end of the sieve plate (21) are movably connected to the top of the two mounting blocks (19). The bottom end of each of the two mounting blocks (19) is fixedly fitted with a first spring (22). The other end of the first spring (22) is fixedly connected to the inner surface of the screening box (1).

8. A screening device for processing iron oxide black according to claim 7, characterized in that: Handles (23) are movably sleeved at the bottom of the two mounting blocks (19). Rotating plates (24) located inside the two mounting blocks (19) are fixedly sleeved on the left and right sides of the outer surface of the handles (23). Connecting plates (25) are hinged to the left and right sides of the rear end of the rotating plates (24). A vertical rod (26) is hinged to the other end of the connecting plates (25). There are four vertical rods (26). The four vertical rods (26) are movably sleeved at the left and right ends inside the two mounting blocks (19) and the positioning block (20). The rotating plates (24) will cause the vertical rods (26) to move.

9. A screening device for processing iron oxide black according to claim 8, characterized in that: The top of the opposite sides of the four uprights (26) are respectively fixedly installed with second springs (27) located inside the two positioning blocks (20), and the top of the opposite sides of the four uprights (26) are respectively fixedly installed with locking blocks (28). The other end of the locking block (28) passes through the positioning block (20) and extends into the interior of the sieve plate (21).

Images