Screen piece convenient to replace for roller screen

Abstract

The utility model relates to the technical field of roller screens, and discloses a conveniently replaceable screen piece for a roller screen, which comprises a screening box, a guide plate is fixedly mounted in the left side of the screening box, a first circular shaft is fixedly mounted on the back of the screening box, a first driven wheel is movably sleeved on the outer surface of the first circular shaft, and a second driven wheel is movably sleeved on the outer surface of the first driven wheel. A baffle is movably connected into the front face of the screening box in a sleeved mode. According to the convenient-to-replace screen piece for the roller screen, when a first rotating shaft rotates, four long shafts are driven to rotate through a circular ring, at the moment, the four long shafts drive four sets of moving blocks to move correspondingly, then the four sets of moving blocks pull four long plates through four sets of hinge blocks, and due to limiting of four sets of limiting shafts, the four long plates are driven to move through the four sets of hinge blocks; at the moment, the four long plates drive the four sets of clamping blocks to move inwards, then the four sets of clamping blocks are disengaged from the interior of the screen piece in the process of moving inwards, the four sets of clamping blocks relieve the locking effect on the screen piece at the moment, and then the abraded screen piece can be replaced conveniently.

Description

Technical Field

[0001] This utility model relates to the field of roller screen technology, and more specifically, to a roller screen plate that can be easily replaced. Background Technology

[0002] Coal is mainly composed of elements such as carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorus. Coal is widely used as fuel for industrial production, bringing unprecedented and enormous productivity to society and driving industrial development. As a result, industries such as coal, steel, chemicals, mining and metallurgy have developed.

[0003] Before pulverizing mined coal, operators often use roller screens to efficiently screen the coal for subsequent production and processing. While existing roller screens possess basic screening functions, long-term scouring by the coal flow causes severe wear on the screen plates, leading to a decline in screening performance. They become ineffective at screening large impurities in the coal, allowing many oversized coal chunks and stones to pass through the screen holes and enter the raw coal bunker without being crushed by a coal crusher, increasing the burden on the pulverizing system. This necessitates timely replacement of worn screen plates. In current technology, screen plates are often rigidly connected to the roller screen by welding. Therefore, when replacement is needed, the entire roller screen often needs to be replaced. However, not all screen plates on the same roller screen are severely worn. This replacement method is simplistic and wasteful, reducing enterprise efficiency. Therefore, improvements are needed. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a replaceable roller screen plate, which has the advantage of making it easy to replace the worn screen plate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a replaceable roller screen plate, comprising:

[0006] A screening box, wherein a guide plate is fixedly installed inside the left side of the screening box, a first round shaft is fixedly installed on the back of the screening box, a first driven wheel is movably sleeved on the outer surface of the first round shaft, a baffle is movably sleeved inside the front of the screening box, a handle is fixedly installed at the top of the front of the baffle, and round blocks are provided on the outer surfaces of both the screening box and the baffle.

[0007] A replacement mechanism is located inside the screening box;

[0008] The replacement mechanism includes a roller, the rear end of the outer surface of the roller being movably sleeved with the interior of the back of the screening box, the front end of the outer surface of the roller being movably sleeved with the interior of a baffle, a screen plate being movably sleeved on the outer surface of the roller, a first rotating shaft being movably sleeved inside the roller, a ring being fixedly sleeved on the outer surface of the first rotating shaft, a long shaft being fixedly sleeved inside the ring, a moving block being movably sleeved on the outer surface of the long shaft, a hinge block being hinged to the other end of the moving block, a long plate being fixedly installed on the outer surface of the hinge block, the outer surface of the long plate being movably connected to the interior of the roller, limit shafts being movably sleeved on the interiors of both the front and rear ends of the long plate, the outer surfaces of the limit shafts being fixedly connected to the interior of the roller, and a locking block being fixedly installed on the outer surface of the long plate, the outer surfaces of the locking blocks being movably sleeved with the interiors of the roller and the screen plate, respectively.

[0009] As a preferred embodiment of the present invention, a rotating block is fixedly installed at the front end of the first rotating shaft, and a rotating plate is fixedly sleeved on the outer surface of the rotating block.

[0010] As a preferred embodiment of this utility model, a fixing block is fixedly installed on the front side of the roller, a threaded block is threaded inside the fixing block, a locking block is fixedly installed at the rear end of the threaded block, and the outer surface of the locking block is movably sleeved with the interior of the rotating plate.

[0011] As a preferred embodiment of this utility model, a fixed shaft is fixedly installed on the front of the screening box, and a stop block is movably sleeved on the outer surface of the fixed shaft. The outer surface of the other end of the stop block is movably connected to the front of the baffle.

[0012] As a preferred technical solution of this utility model, a fixed frame is fixedly installed on the back of the screening box, a motor is fixedly installed on the back of the fixed frame, a second rotating shaft is fixedly sleeved on the other end of the motor output shaft, a first driving wheel and a second driving wheel are fixedly sleeved on the outer surface of the second rotating shaft respectively, and the first driving wheel is connected to the first driven wheel through a first transmission belt.

[0013] As a preferred embodiment of this utility model, a rotating wheel is connected to the outer surface of the first transmission belt, and a connecting shaft is fixedly sleeved inside the rotating wheel. The front end of the connecting shaft is fixedly connected to the rear end of the roller.

[0014] As a preferred embodiment of this utility model, a second round shaft is fixedly installed on the back of the screening box, and the outer surface of the second round shaft is movably connected to the outer surface of the first transmission belt.

[0015] As a preferred technical solution of this utility model, an arc-shaped plate is fixedly installed on the right side of the bottom of the screening box, a driven shaft is movably sleeved inside the right side of the arc-shaped plate, and a driven roller is fixedly sleeved on the outer surface of the driven shaft.

[0016] As a preferred technical solution of this utility model, a third circular shaft is fixedly installed on the back of the arc plate, and a second driven wheel and a drive gear are movably sleeved on the outer surface of the third circular shaft. The second driven wheel is fixedly connected to the drive gear, and the second driven wheel is connected to the second drive wheel through a second transmission belt.

[0017] As a preferred embodiment of this utility model, a driven gear is meshed with the outer surface of the drive gear, a drive shaft is fixedly sleeved inside the driven gear, both ends of the drive shaft are movably sleeved inside the arc plate, a drive roller is fixedly sleeved on the outer surface of the drive shaft, and the drive roller is connected to the driven roller via a third transmission belt.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This replaceable roller screen plate, when the first rotating shaft rotates, will drive the four long shafts to rotate through the ring. At this time, the four long shafts will drive the four sets of moving blocks to move respectively. Then, the four sets of moving blocks will pull the four long plates through the four sets of hinge blocks. Due to the limitation of the four sets of limiting shafts, the four long plates will drive the four sets of locking blocks to move inward. Then, the four sets of locking blocks will disengage from the sleeve inside the screen plate during the inward movement. At this time, the four sets of locking blocks will release the locking effect on the screen plate, thus making it easy to replace the worn screen plate.

[0020] 2. This replaceable roller screen plate, when the motor is running, the second rotating shaft will simultaneously drive the first drive wheel and the second drive wheel to rotate. At this time, the first drive wheel will drive the first driven wheel to rotate through the first transmission belt. Simultaneously, the first transmission belt will drive the connecting shaft and the roller as a whole to rotate through the rotating wheel. At this time, the screen plate will screen the coal blocks. At the same time, the second drive wheel will drive the second driven wheel and the drive gear to rotate through the second transmission belt. Since the drive gear and the driven gear are meshed, the drive gear will drive the drive shaft to rotate through the driven gear. At this time, the drive shaft will drive the driven roller to rotate through the drive roller and the third transmission belt. At this time, the third transmission belt will transport the screened coal blocks in motion, thereby enabling efficient screening and transportation of coal blocks. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0023] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 4 This is a cross-sectional view of the motor of this utility model;

[0025] Figure 5 This is a cross-sectional structural diagram of the roller of this utility model;

[0026] Figure 6 This is a cross-sectional view of the rotating wheel of this utility model;

[0027] Figure 7 This is a cross-sectional view of the driven roller of this utility model;

[0028] Figure 8 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0029] In the diagram: 1. Screening box; 2. Baffle; 3. Roller; 4. First rotating shaft; 5. Ring; 6. Long shaft; 7. Moving block; 8. Hinge block; 9. Long plate; 10. Limiting shaft; 11. Locking block; 12. Screen plate; 13. Twisting block; 14. Rotating plate; 15. Fixed block; 16. Threaded block; 17. Locking block; 18. Round block; 19. Fixed shaft; 20. Stop block; 21. Handle; 22. Guide plate; 23. First round shaft; 24. First driven wheel; 25. Fixed frame; 26. Motor; 27. Second rotating shaft; 28. First drive wheel; 29. ​​Second drive wheel; 30. First transmission belt; 31. Rotating wheel; 32. Connecting shaft; 33. Second round shaft; 34. Arc plate; 35. Driven shaft; 36. Driven roller; 37. Third round shaft; 38. Second driven wheel; 39. Drive gear; 40. Second transmission belt; 41. Driven gear; 42. Drive shaft; 43. Drive roller; 44. Third transmission belt. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1 to 8 As shown, this utility model provides a replaceable roller screen plate, comprising:

[0032] Screening box 1, a guide plate 22 is fixedly installed inside the left side of screening box 1, a first round shaft 23 is fixedly installed on the back of screening box 1, a first driven wheel 24 is movably sleeved on the outer surface of the first round shaft 23, a baffle 2 is movably sleeved inside the front of screening box 1, a handle 21 is fixedly installed on the top of the front of baffle 2, and round blocks 18 are provided on the outer surfaces of screening box 1 and baffle 2.

[0033] A replacement mechanism is installed inside the screening box 1.

[0034] The replacement mechanism includes a roller 3, the rear end of the outer surface of the roller 3 is movably connected to the interior of the back of the screening box 1, the front end of the outer surface of the roller 3 is movably connected to the interior of the baffle 2, a screen plate 12 is movably connected to the outer surface of the roller 3, a first rotating shaft 4 is movably connected to the interior of the roller 3, a ring 5 is fixedly connected to the outer surface of the first rotating shaft 4, a long shaft 6 is fixedly connected to the interior of the ring 5, a moving block 7 is movably connected to the outer surface of the long shaft 6, a hinge block 8 is hinged to the other end of the moving block 7, a long plate 9 is fixedly installed on the outer surface of the hinge block 8, the outer surface of the long plate 9 is movably connected to the interior of the roller 3, a limit shaft 10 is movably connected to the interior of both the front and rear ends of the long plate 9, the outer surface of the limit shaft 10 is fixedly connected to the interior of the roller 3, and a locking block 11 is fixedly installed on the outer surface of the long plate 9, the outer surface of the locking block 11 is movably connected to the interior of the roller 3 and the screen plate 12 respectively.

[0035] When the roller 3 drives the screen plate 12 to rotate, small coal particles inside the screening box 1 will fall into the screening box 1 through the gaps between the screen plates 12, while large coal particles will move to the inside of the guide plate 22 under the drive of the screen plate 12, and then move out of the screening box 1 under the guidance of the guide plate 22. When the first rotating shaft 4 rotates, the first rotating shaft 4 will drive the four long shafts 6 to rotate through the ring 5. Then the four long shafts 6 will drive the four sets of hinge blocks 8 to move through the four sets of moving blocks 7. At this time, the four sets of hinge blocks 8 will pull the four long plates 9. Due to the limitation of the four sets of limiting shafts 10, the four sets of locking blocks 11 will move inward under the drive of the four sets of long plates 9. Then the four sets of locking blocks 11 will release the sleeve inside the screen plate 12 during the inward movement. At this time, the four sets of locking blocks 11 will not be able to lock the screen plate 12, thus making it easier for the operator to replace the screen plate 12.

[0036] Among them, a screwing block 13 is fixedly installed at the front end of the first rotating shaft 4, and a rotating plate 14 is fixedly sleeved on the outer surface of the screwing block 13.

[0037] When the operator turns the turning block 13, the turning block 13 will simultaneously drive the first rotating shaft 4 and the rotating plate 14 to rotate.

[0038] Among them, a fixing block 15 is fixedly installed on the front of the roller 3, a threaded block 16 is threaded inside the fixing block 15, a locking block 17 is fixedly installed at the rear end of the threaded block 16, and the outer surface of the locking block 17 is movably sleeved with the inside of the rotating plate 14.

[0039] Since the threaded block 16 is threadedly connected to the fixed block 15, when the operator screws the threaded block 16, the threaded block 16 will move forward along the inside of the fixed block 15. At this time, the locking block 17 will move forward under the drive of the threaded block 16 and release its movable connection with the rotating plate 14. At this time, the locking block 17 will release the locking effect on the entire rotating plate 14.

[0040] Among them, a fixed shaft 19 is fixedly installed on the front of the screening box 1, and a stop block 20 is movably sleeved on the outer surface of the fixed shaft 19. The outer surface of the other end of the stop block 20 is movably connected to the front of the baffle 2.

[0041] When the stop block 20 is movably connected to the baffle 2, the stop block 20 can fix the connection between the baffle 2 and the screening box 1. Since the inside of the stop block 20 is movably sleeved with the fixed shaft 19, the stop block 20 can rotate around the fixed shaft 19. Due to the design of the circular block 18, the rotation stroke of the stop block 20 is limited, so that it can only rotate 90 degrees. When the stop block 20 rotates 90 degrees, it will release the contact with the baffle 2, and thus cannot fix it.

[0042] Among them, a fixed frame 25 is fixedly installed on the back of the screening box 1, a motor 26 is fixedly installed on the back of the fixed frame 25, a second rotating shaft 27 is fixedly sleeved on the other end of the output shaft of the motor 26, a first driving wheel 28 and a second driving wheel 29 are fixedly sleeved on the outer surface of the second rotating shaft 27 respectively, and the first driving wheel 28 is connected to the first driven wheel 24 through the first transmission belt 30.

[0043] When the motor 26 is running, the second shaft 27 will simultaneously drive the first drive wheel 28 and the second drive wheel 29 to rotate. At this time, the first drive wheel 28 will drive the first driven wheel 24 to rotate through the first transmission belt 30.

[0044] The outer surface of the first transmission belt 30 is connected to a rotating wheel 31, and a connecting shaft 32 is fixedly sleeved inside the rotating wheel 31. The front end of the connecting shaft 32 is fixedly connected to the rear end of the roller 3.

[0045] Since the outer surface of the first transmission belt 30 is movably connected to the rotating wheel 31, when the first transmission belt 30 transmits power to the first driving wheel 28 and the first driven wheel 24, it will simultaneously drive several sets of rotating wheels 31 to rotate. At this time, the rotating wheels 31 will drive the roller 3 to rotate as a whole through the connecting shaft 32.

[0046] The second round shaft 33 is fixedly installed on the back of the screening box 1, and the outer surface of the second round shaft 33 is movably connected to the outer surface of the first transmission belt 30.

[0047] Due to the design of the second circular shaft 33, the contact area between the first transmission belt 30 and the rotating wheel 31 can be increased, thereby improving the friction between the first transmission belt 30 and the rotating wheel 31, and thus enhancing the stability of the transmission of the first transmission belt 30.

[0048] Among them, an arc plate 34 is fixedly installed on the right side of the bottom of the screening box 1, a driven shaft 35 is movably sleeved inside the right side of the arc plate 34, and a driven roller 36 is fixedly sleeved on the outer surface of the driven shaft 35.

[0049] Since the driven shaft 35 is movably connected to the inside of the arc plate 34, when the driven roller 36 rotates, the driven shaft 35 will rotate inside the arc plate 34 under the drive of the driven shaft 35.

[0050] The back of the arc plate 34 is fixedly mounted with a third round shaft 37. The outer surface of the third round shaft 37 is movably sleeved with a second driven wheel 38 and a drive gear 39. The second driven wheel 38 is fixedly connected to the drive gear 39 and is connected to the second drive wheel 29 through a second transmission belt 40.

[0051] When the second drive wheel 29 rotates, it will drive the second driven wheel 38 to rotate through the second transmission belt 40. At this time, the second driven wheel 38 will drive the drive gear 39 to rotate around the third circular shaft 37.

[0052] Among them, the outer surface of the drive gear 39 is meshed with the driven gear 41, the drive shaft 42 is fixedly sleeved inside the driven gear 41, the front and rear ends of the drive shaft 42 are movably sleeved inside the arc plate 34, the outer surface of the drive shaft 42 is fixedly sleeved with the drive roller 43, and the drive roller 43 is connected to the driven roller 36 through the third transmission belt 44.

[0053] Since the outer surface of the drive gear 39 meshes with the outer surface of the driven gear 41, when the drive gear 39 rotates, it will drive the drive shaft 42 to rotate through the driven gear 41. At this time, the drive shaft 42 will drive the driven roller 36 to rotate through the drive roller 43 and the third transmission belt 44. At this time, the third transmission belt 44 will be able to transport the small coal particles at its top.

[0054] Working principle and usage process of this utility model:

[0055] When the operator needs to screen the coal, the operator first pours the coal into the screening box 1. Then the operator starts the motor 26. At this time, the second rotating shaft 27 will simultaneously drive the first drive wheel 28 and the second drive wheel 29 to rotate. The second drive wheel 29 will drive the second driven wheel 38 to rotate through the second transmission belt 40. The second driven wheel 38 will drive the drive gear 39 to rotate around the third circular shaft 37. Since the outer surface of the drive gear 39 is meshed with the outer surface of the driven gear 41, the drive gear 39 will drive the drive shaft 42 to rotate through the driven gear 41. At this time, the drive roller 43 will rotate under the drive of the drive shaft 42. Then the drive roller 43 will drive the driven roller 36 to rotate through the third transmission belt 44.

[0056] Meanwhile, the first drive wheel 28 will drive the first driven wheel 24 to rotate via the first transmission belt 30. At the same time, several rotating wheels 31 will rotate under the drive of the first transmission belt 30. These rotating wheels 31 will drive several rollers 3 to rotate via several connecting shafts 32. These rollers 3 will drive several sets of screen plates 12 to rotate. The coal blocks inside the screening box 1 will be moved by the rotation of the screen plates 12. During this process, coal blocks with a volume smaller than the aperture between the screen plates 12 will fall to the bottom of the screening box 1. Due to the design of the bottom of the screening box 1, these coal blocks can be guided to the top of the third transmission belt 44 for transportation. Larger coal blocks will move to the inside of the guide plate 22 under the drive of the screen plates 12 and move out of the screening box 1 through the guide plate 22, thereby achieving the function of efficient screening and transportation.

[0057] When the screen plate 12 wears out, the operator first rotates each of the four stop blocks 20. Due to the design of the four sets of round blocks 18, the rotation stroke of the four stop blocks 20 is limited, allowing them to rotate only 90 degrees. When all four stop blocks 20 rotate 90 degrees around the fixed shaft 19, the outer surfaces of the four stop blocks 20 will disengage from the outer surface of the baffle 2. At this point, the four stop blocks 20 will no longer be able to fix the connection between the baffle 2 and the screening box 1. Then, the operator pulls the handle 21 to disengage the baffle 2 from the screening box 1. Next, the operator rotates the threaded block 16. Since the outer surface of the threaded block 16 is threaded with the inner thread of the fixed block 15, when the threaded block 16 rotates, it will move forward along the inside of the fixed block 15. At this time, the locking block 17 will move forward under the drive of the threaded block 16. Subsequently, the outer surface of the locking block 17 will disengage from the rotating plate 14 during the forward movement. In addition to locking the rotating plate 14 as a whole, the operator then rotates the screw block 13. The screw block 13 will drive the first rotating shaft 4 to rotate inside the roller 3. Subsequently, the first rotating shaft 4 will drive the four long shafts 6 to rotate through the ring 5. The four long shafts 6 will drive the four sets of moving blocks 7 to move during rotation. At this time, the other end of the four sets of moving blocks 7 will pull the four sets of hinge blocks 8 during movement, thereby causing the four sets of hinge blocks 8 to drive the four long plates 9 to move. Due to the design of the four sets of limiting shafts 10, the movement of the long plates 9 will be limited. At this time, the four long plates 9 will move inward along the outer surface of the four sets of limiting shafts 10. Then, the four sets of locking blocks 11 will move inward under the drive of the four long plates 9. Subsequently, the outer surface of the four sets of locking blocks 11 will disengage from the inside of the screen plate 12 during inward movement. At this time, the four sets of locking blocks 11 will release the locking of the screen plate 12, thereby realizing the function of facilitating the replacement of the worn screen plate 12.

[0058] 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.

[0059] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable roller screen plate, characterized in that, Including: A screening box (1) has a guide plate (22) fixedly installed inside the left side of the screening box (1), a first round shaft (23) fixedly installed on the back of the screening box (1), a first driven wheel (24) movably sleeved on the outer surface of the first round shaft (23), a baffle (2) movably sleeved inside the front of the screening box (1), a handle (21) fixedly installed at the top of the front of the baffle (2), and round blocks (18) are provided on the outer surfaces of both the screening box (1) and the baffle (2). A replacement mechanism is provided inside the screening box (1); The replacement mechanism includes a roller (3), the rear end of the outer surface of the roller (3) is movably connected to the interior of the back of the screening box (1), the front end of the outer surface of the roller (3) is movably connected to the interior of the baffle (2), a screen plate (12) is movably connected to the outer surface of the roller (3), a first rotating shaft (4) is movably connected to the interior of the roller (3), a ring (5) is fixedly connected to the outer surface of the first rotating shaft (4), a long shaft (6) is fixedly connected to the interior of the ring (5), and a moving block is movably connected to the outer surface of the long shaft (6). 7) The other end of the moving block (7) is hinged to a hinge block (8). A long plate (9) is fixedly installed on the outer surface of the hinge block (8). The outer surface of the long plate (9) is movably connected to the inside of the roller (3). Limiting shafts (10) are movably sleeved on the inside of both the front and rear ends of the long plate (9). The outer surface of the limiting shaft (10) is fixedly connected to the inside of the roller (3). A locking block (11) is fixedly installed on the outer surface of the long plate (9). The outer surface of the locking block (11) is movably sleeved with the inside of the roller (3) and the screen plate (12) respectively.

2. The replaceable roller screen plate according to claim 1, characterized in that: A screwing block (13) is fixedly installed at the front end of the first rotating shaft (4), and a rotating plate (14) is fixedly sleeved on the outer surface of the screwing block (13).

3. The easily replaceable roller screen plate according to claim 2, characterized in that: A fixing block (15) is fixedly installed on the front of the roller (3), and a threaded block (16) is threaded inside the fixing block (15). A locking block (17) is fixedly installed at the rear end of the threaded block (16), and the outer surface of the locking block (17) is movably connected to the inside of the rotating plate (14).

4. The easily replaceable roller screen plate according to claim 1, characterized in that: A fixed shaft (19) is fixedly installed on the front of the screening box (1), and a stop block (20) is movably sleeved on the outer surface of the fixed shaft (19). The outer surface of the other end of the stop block (20) is movably connected to the front of the baffle (2).

5. The replaceable roller screen plate according to claim 1, characterized in that: A fixed frame (25) is fixedly installed on the back of the screening box (1). A motor (26) is fixedly installed on the back of the fixed frame (25). A second rotating shaft (27) is fixedly sleeved on the other end of the output shaft of the motor (26). A first drive wheel (28) and a second drive wheel (29) are fixedly sleeved on the outer surface of the second rotating shaft (27). The first drive wheel (28) is connected to the first driven wheel (24) through a first transmission belt (30).

6. A replaceable roller screen plate according to claim 5, characterized in that: The outer surface of the first transmission belt (30) is connected to a rotating wheel (31), and a connecting shaft (32) is fixedly sleeved inside the rotating wheel (31). The front end of the connecting shaft (32) is fixedly connected to the rear end of the roller (3).

7. A replaceable roller screen plate according to claim 5, characterized in that: A second round shaft (33) is fixedly installed on the back of the screening box (1), and the outer surface of the second round shaft (33) is movably connected to the outer surface of the first transmission belt (30).

8. The easily replaceable roller screen plate according to claim 1, characterized in that: An arc plate (34) is fixedly installed on the right side of the bottom of the screening box (1). A driven shaft (35) is movably sleeved inside the right side of the arc plate (34). A driven roller (36) is fixedly sleeved on the outer surface of the driven shaft (35).

9. A replaceable roller screen plate according to claim 8, characterized in that: A third round shaft (37) is fixedly installed on the back of the arc plate (34). A second driven wheel (38) and a drive gear (39) are movably sleeved on the outer surface of the third round shaft (37). The second driven wheel (38) is fixedly connected to the drive gear (39). The second driven wheel (38) is connected to the second drive wheel (29) through the second transmission belt (40).

10. A replaceable roller screen plate according to claim 9, characterized in that: The outer surface of the drive gear (39) is meshed with a driven gear (41), and the drive shaft (42) is fixedly sleeved inside the driven gear (41). Both ends of the drive shaft (42) are movably sleeved inside the arc plate (34). The outer surface of the drive shaft (42) is fixedly sleeved with a drive roller (43), and the drive roller (43) is connected to the driven roller (36) through a third transmission belt (44).

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