Drum screen capable of conducting multi-stage screening

Abstract

The drum screen capable of achieving multi-stage screening comprises a mounting plate, a fixing frame is fixedly connected to the upper surface of the mounting plate, a first drum screen body is movably mounted on the portion, located on the upper surface of the mounting plate, in the fixing frame, and a second drum screen body is movably connected to the center of the interior of the first drum screen body in a sleeving mode; cleaning rods fixedly connected with the top end of the inner wall of the fixing frame are arranged on the inner walls of the first drum screen and the second drum screen in a contact mode, and a discharging mechanism installed on the upper surface of the installing plate is arranged at one end of the second drum screen. The blocking block is driven to rotate through the movable rod, so that intermittent discharging operation can be conducted on the discharging hopper, screening hole blocking caused by excessive one-time discharging is prevented, meanwhile, the inner wall of the drum screen can be scraped and swept through the arrangement of the sweeping rod when the drum screen rotates, screening hole blocking is further prevented, and the screening efficiency is improved. Therefore, the screen is prevented from being blocked to a certain extent, and meanwhile the screening efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drum screens, and particularly to a drum screen capable of multi-stage screening. Background Art

[0002] The drum screen is a kind of machinery widely used in the sorting technology. It controls the sorting of garbage by the particle size of the particles. The sorting accuracy is high. The cylinder of the drum screen is generally divided into several sections, which can be determined according to the specific situation. The sieve holes are arranged from small to large, and the aperture of the sieve holes on each section is the same. The drum screen mainly consists of a motor, a reducer, a drum device, a frame, a sealing cover, and a feeding and discharging port.

[0003] In the prior art, when the drum screen screens materials, when the rotation speed of the drum screen is too slow, the residence time of the materials in the drum is too long, and the one-time feeding is too much, it may easily cause the materials to accumulate on the surface of the sieve mesh, resulting in the blockage of the sieve mesh, affecting the subsequent screening operation of the materials, and reducing the screening efficiency. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a drum screen capable of multi-stage screening to solve the technical problems proposed in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A drum screen capable of multi-stage screening, including a mounting plate, a fixed frame is fixedly installed on the mounting plate, a rotatable first drum screen is installed inside the fixed frame, a rotatable second drum screen is installed at the central position inside the first drum screen, and cleaning rods fixedly connected to the inner wall of the fixed frame are provided in contact with the inner walls of both the first drum screen and the second drum screen; a feeding mechanism installed on the mounting plate is provided at one end of the second drum screen. The feeding mechanism includes a feeding frame fixedly connected to both the mounting plate and the fixed frame, a feeding hopper is fixedly connected inside the feeding frame, a blocking block is provided in contact with the outlet end face of the outlet of the feeding hopper, a driving mechanism for driving the blocking block to move horizontally is provided on one side of the feeding frame, and the driving mechanism can also drive the first drum screen and the second drum screen to rotate.

[0006] Preferably, a movable rod is hinged to the outer wall of the blocking block, one end of the movable rod away from the blocking block is movably connected to a turntable, a transmission rod is fixedly connected to the center of the turntable, a second bevel gear is installed at the input end of the transmission rod, and the second bevel gear is rotatably supported on the mounting plate and meshes with a first bevel gear.

[0007] Preferably, two groups of mounting rings are rotatably sleeved on the outer walls at both ends of the first drum screen, both groups of mounting rings are fixedly connected to the mounting plate and the fixed frame, and a plurality of rotating wheels in contact with the outer wall of the first drum screen are provided between the two mounting rings in the same group.

[0008] Preferably, both ends of the second drum sieve extend to the outside of the first drum sieve, and both ends of the outer wall of the second drum sieve are rotatably sleeved with limiting rings, the limiting rings are fixedly connected with the mounting plate, and a plurality of pulleys in contact with the outer wall of the second drum sieve are arranged between two limiting rings in the same group, and a driving wheel in contact with the outer wall of the second drum sieve is further arranged at one end of the second drum sieve close to the feeding frame, and the driving wheel is rotatably supported on the mounting plate.

[0009] Preferably, the driving mechanism includes a motor fixedly installed on the mounting plate, the output end of the motor is connected with a rotating rod through a coupling, a second belt pulley is fixedly sleeved on the outer wall of the rotating rod, a rotating first belt pulley is further supported on the mounting plate, the first belt pulley and the second belt pulley are connected by a belt drive, and the driving wheel and the first belt pulley are connected by a fixed shaft.

[0010] Preferably, one end of the rotating rod away from the motor is fixedly connected with a group of driving wheels, and a first bevel gear is fixedly sleeved on the outer wall of the rotating rod.

[0011] Preferably, a slotted opening is formed on one side surface of the feeding frame, and the movable rod penetrates through the slotted opening and extends into the feeding frame; a supporting plate for supporting the movable rod is further fixedly connected to the outer wall of the feeding frame; one side of the bottom end of the feeding frame is fixedly connected with a discharge pipe communicated with the feeding frame, and one end of the discharge pipe away from the feeding frame extends into the second drum sieve.

[0012] Preferably, two groups of limiting rods are symmetrically and fixedly connected to the inner wall of the feeding frame below the feeding hopper, two groups of limiting blocks are symmetrically and fixedly connected to the outer wall of the material blocking block, and the extending ends of the two groups of limiting blocks are respectively movably sleeved on the outer walls of the two groups of limiting rods.

[0013] Preferably, a second guiding plate fixedly connected with the limiting ring is arranged at one end of the second drum sieve away from the feeding mechanism, and a first guiding plate fixedly connected with the mounting ring is arranged below one end of the first drum sieve and located below the second guiding plate; an opening matching the first drum sieve is formed on the surface of the mounting plate, and a guiding frame matching the opening is fixedly connected to the lower surface of the mounting plate.

[0014] In summary, the present invention mainly has the following beneficial effects:

[0015] 1. The present invention drives the blocking block to rotate through the movable rod, so as to perform intermittent feeding operation on the feeding hopper, thereby preventing excessive feeding at one time and causing the sieve holes to be blocked. At the same time, through the arrangement of the cleaning rod, the inner wall of the drum sieve can be scraped when the drum sieve rotates, further preventing the sieve holes from being blocked, thereby preventing the sieve mesh from being blocked to a certain extent and improving the screening efficiency.

[0016] 2. By setting the first pulley and the second pulley in the driving mechanism, the present invention drives two groups of drum screens to rotate simultaneously, facilitating multi-stage screening of materials and providing a power source for the feeding mechanism. This improves production efficiency and screening accuracy at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the overall structure of the first perspective of the present invention;

[0018] Figure 2 is a three-dimensional schematic diagram of the overall structure of the second perspective of the present invention;

[0019] Figure 3 is a three-dimensional diagram of the internal structure of the fixed frame of the present invention;

[0020] Figure 4 is a three-dimensional diagram of a partial internal structure of the fixed frame of the present invention;

[0021] Figure 5 is a three-dimensional sectional view of the feeding mechanism of the present invention.

[0022] In the figure: 1. mounting plate; 11. fixed frame; 12. material guiding frame; 13. first drum screen; 131. first material guiding plate; 14. mounting ring; 15. second drum screen; 151. second material guiding plate; 152. pulley; 16. limiting ring; 17. cleaning rod; 2. driving mechanism; 21. runner; 22. transmission wheel; 23. first pulley; 24. second pulley; 25. motor; 26. rotating rod; 3. feeding mechanism; 31. first bevel gear; 32. second bevel gear; 33. transmission rod; 34. turntable; 35. movable rod; 351. material blocking block; 352. limiting block; 36. limiting rod; 37. feeding frame; 371. slotted opening; 372. support plate; 38. feeding hopper; 39. discharge pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The embodiments of the present invention will be described below according to its overall structure.

[0025] A drum screen capable of multi-stage screening, such as Figure 1 , Figure 3 , Figure 4 , Figure 5As shown in the figure, it includes a mounting plate 1. A fixed frame 11 is fixedly mounted on the mounting plate 1. A rotatable first drum sieve 13 is installed inside the fixed frame 11. A rotatable second drum sieve 15 is installed at the central position inside the first drum sieve 13. Through the setting of the fixed frame 11, the first drum sieve 13 and the second drum sieve 15 can be protected and used;

[0026] Exemplarily, cleaning rods 17 fixedly connected to the inner wall of the fixed frame 11 are in contact with the inner walls of both the first drum sieve 13 and the second drum sieve 15. The inner walls of the first drum sieve 13 and the second drum sieve 15 can be scraped by the cleaning rods 17, thereby preventing the screen from being blocked;

[0027] Exemplarily, a blanking mechanism 3 installed on the mounting plate 1 is provided at one end of the second drum sieve 15. The blanking mechanism 3 includes a feed frame 37 fixedly connected to both the mounting plate 1 and the fixed frame 11. A blanking hopper 38 is fixedly connected inside the feed frame 37. A blanking block 351 in contact with the outlet end face of the blanking hopper 38 is provided at the outlet of the blanking hopper 38. A driving mechanism 2 for driving the blanking block 351 to move horizontally is provided on one side of the feed frame 37. The driving mechanism 2 can also drive the first drum sieve 13 and the second drum sieve 15 to rotate; by driving the first drum sieve 13 and the second drum sieve 15 to rotate through the driving mechanism 2, it is convenient to screen the materials inside them. At the same time, by driving the blanking block 351 to move through the driving mechanism 2, it is convenient to cooperate with the blanking hopper 38 to carry out intermittent blanking of the materials, preventing too much materials from being poured in at one time and causing the screen to be blocked.

[0028] Refer to Figure 4 and Figure 5 As can be seen, a movable rod 35 is hinged to the outer wall of the blanking block 351. The lower surface of the end of the movable rod 35 away from the blanking block 351 is movably connected to a turntable 34. A transmission rod 33 is fixedly connected to the center of the turntable 34. A second bevel gear 32 is installed at the input end of the transmission rod 33, and the second bevel gear 32 is rotatably supported on the mounting plate 1. The second bevel gear 32 meshes with a first bevel gear 31. By driving the transmission rod 33 to rotate through the cooperation of the first bevel gear 31 and the second bevel gear 32, the transmission rod 33 drives the turntable 34 to rotate, and the turntable 34 cooperates with the movable rod 35 to drive the blanking block 351 to move reciprocally, thereby realizing the intermittent blanking of the materials.

[0029] Refer to Figure 3 As can be seen, two groups of mounting rings 14 are rotatably sleeved on the outer walls of both ends of the first drum sieve 13. Both groups of mounting rings 14 are fixedly connected to the mounting plate 1 and the fixed frame 11. The first drum sieve 13 can be installed through the mounting rings 14;

[0030] Exemplarily, a plurality of rotating wheels 21 in contact with the outer wall of the first drum sieve 13 are provided between the two mounting rings 14 in the same group. The first drum sieve 13 is driven to rotate through the mutual cooperation of the plurality of rotating wheels 21 to screen the materials.

[0031] Refer to Figure 3 and Figure 4 As can be seen, both ends of the second drum screen 15 extend to the outside of the first drum screen 13, and both ends of the outer wall of the second drum screen 15 are rotatably sleeved with limit rings 16. The limit rings 16 are fixedly connected to the mounting plate 1, and the second drum screen 15 can be installed through the limit rings 16;

[0032] Exemplarily, a plurality of pulleys 152 in contact with the outer wall of the second drum screen 15 are provided between two limit rings 16 in the same group, and a transmission wheel 22 in contact with its outer wall is further provided at one end of the second drum screen 15 close to the feed frame 37. The transmission wheel 22 is rotatably supported on the mounting plate 1. By driving the transmission wheel 22 to rotate through the first pulley 23, the second drum screen 15 can be driven to rotate in cooperation with the pulleys 152, so as to facilitate the screening of materials.

[0033] Refer to Figure 3 and Figure 4 As can be seen, the driving mechanism 2 includes a motor 25 fixedly installed on the mounting plate 1. The output end of the motor 25 is connected to a rotating rod 26 through a coupling. A second pulley 24 is fixedly sleeved on the outer wall of the rotating rod 26. A rotating first pulley 23 is also supported on the mounting plate 1. The first pulley 23 and the second pulley 24 are connected by belt drive, and the transmission wheel 22 and the first pulley 23 are connected by a fixed shaft. One end of the rotating rod 26 away from the motor 25 is fixedly connected to a group of transmission wheels 22. By driving the rotating rod 26 to rotate through the motor 25, the rotating rod 26 drives the transmission wheel 22 to rotate, and the rotating rod 26 can drive the second pulley 24 to rotate. The second pulley 24 drives the first pulley 23 to rotate through the belt. Under the action of the second pulley 24 and the first pulley 23, the first drum screen 13 and the second drum screen 15 can be driven to rotate through the rotating wheel 21 and the transmission wheel 22 to screen the materials.

[0034] Exemplarily, a first bevel gear 31 is fixedly sleeved on the outer wall of the rotating rod 26, and the first bevel gear 31 is located on the side of the first pulley 23 away from the transmission wheel 22. The rotating rod 26 can provide power for the first bevel gear 31 at the same time, so as to facilitate driving the material blocking block 351 to move and be used.

[0035] Refer to Figure 4 and Figure 5 As can be seen, a slot 371 is formed on one surface of the feed frame 37. The movable rod 35 passes through the slot 371 and extends outside the feed frame 37. The slot 371 can be used to limit the movable rod 35;

[0036] Exemplarily, a support plate 372 for supporting the movable rod 35 is also fixedly connected to the outer wall of the feed frame 37. The movable rod 35 is in contact with the support plate 372. The support plate 372 can support the movable rod 35, so as to facilitate the movable rod 35 to drive the material blocking block 351 to move;

[0037] Exemplarily, one side of the bottom end of the feed frame 37 is fixedly connected with a discharge pipe 39 that is communicated with the feed frame 37. One end of the discharge pipe 39 away from the feed frame 37 extends into the second drum sieve 15. Through the discharge pipe 39, the materials inside the feed frame 37 can be discharged into the second drum sieve 15 for screening operation.

[0038] Refer to Figure 5 It can be seen that two groups of limiting rods 36 are symmetrically and fixedly connected to the inner wall of the feed frame 37 below the feed hopper 38. Two groups of limiting blocks 352 are symmetrically and fixedly connected to the outer wall of the material blocking block 351. The extending ends of the two groups of limiting blocks 352 are respectively movably sleeved on the outer walls of the two groups of limiting rods 36. The limiting rods 36 and the limiting blocks 352 cooperate with each other to limit the material blocking block 351, so as to drive the material blocking block 351 to move back and forth in parallel, realizing the intermittent feeding of the feed hopper 38.

[0039] Refer to Figure 2 It can be seen that a second guide plate 151 fixedly connected to the limiting ring 16 is provided at one end of the second drum sieve 15 away from the feeding mechanism 3. Through the second guide plate 151, the materials screened by the second drum sieve 15 can be discharged;

[0040] Exemplarily, a first guide plate 131 fixedly connected to the mounting ring 14 is provided at one end of the first drum sieve 13 below the second guide plate 151. Through the first guide plate 131, the materials screened by the first drum sieve 13 can be discharged;

[0041] Exemplarily, an opening matching the first drum sieve 13 is formed on the surface of the mounting plate 1, and a guide frame 12 matching the opening is fixedly connected to the lower surface of the mounting plate 1. After the materials are screened by the first drum sieve 13, the materials fall through the opening and are then discharged through the guide frame 12, which is convenient for collecting the materials.

[0042] The working principle of the present invention is as follows: When screening materials, by starting the motor 25, the motor 25 drives the rotating rod 26 to rotate, the rotating rod 26 drives a group of rotating wheels 21 to rotate, and then the rotating wheels 21 can drive the first drum sieve 13 to rotate. At the same time, the rotating rod 26 drives the second pulley 24 to rotate, the second pulley 24 drives the first pulley 23 to rotate through a belt, and the first pulley 23 drives the transmission wheel 22 to rotate. With the cooperation of the transmission wheel 22 and the pulley 152, the second drum sieve 15 is driven to rotate, so that the materials can be screened. After the second drum sieve 15 screens the materials, a part of the materials is discharged through the second guide plate 151, and the other part of the materials falls into the first drum sieve 13 for continuous screening. After screening, a part of the materials is discharged through the first guide plate 131, and the remaining materials are discharged from the guide frame 12 through the opening for material collection;

[0043] Furthermore, by pouring the materials into the feeding frame 37, the materials enter the feeding hopper 38 located inside the feeding frame 37. The rotating rod 26 drives the first bevel gear 31 to rotate, the first bevel gear 31 drives the second bevel gear 32 to rotate, the second bevel gear 32 cooperates with the transmission rod 33 to drive the turntable 34 to rotate, and the turntable 34 cooperates with the limiting block 352 and the limiting rod 36 to drive the blanking block 351 to move parallelly. Under the action of the turntable 34 and the movable rod 35, the feeding hopper 38 can perform intermittent blanking, thus preventing excessive blanking at one time from causing the screen to be blocked, and to a certain extent improving the screening efficiency of the materials. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0044] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A drum screen capable of multi-stage screening, comprising a mounting plate (1), characterized in that: A fixing frame (11) is fixedly mounted on the mounting plate (1), a rotatable first drum screen (13) is mounted inside the fixing frame (11), a rotatable second drum screen (15) is mounted at the center of the first drum screen (13), and a cleaning rod (17) fixedly connected to the inner wall of the fixing frame (11) is provided on the inner wall of the first drum screen (13) and the inner wall of the second drum screen (15); one end of the second drum screen (15) is provided with a material discharge mechanism (3) mounted on the mounting plate (1). ), the material discharge mechanism (3) comprises a feed frame (37) fixedly connected to the mounting plate (1) and the fixed frame (11), a material discharge hopper (38) fixedly connected inside the feed frame (37), a material blocking block (351) in contact with the outlet end surface of the material discharge hopper (38) is provided at the outlet of the material discharge hopper (38), a driving mechanism (2) for driving the material blocking block (351) to move horizontally is provided on one side of the feed frame (37), and the driving mechanism (2) can also drive the first drum screen (13) and the second drum screen (15) to rotate.

2. A drum screen capable of multi-stage screening according to claim 1, characterized in that: The outer wall of the blocking block (351) is hinged with a movable rod (35), one end of the movable rod (35) away from the blocking block (351) is movably connected to a rotating disk (34), the center of the rotating disk (34) is fixedly connected to a transmission rod (33), the input end of the transmission rod (33) is installed with a second bevel gear (32), the second bevel gear (32) is rotatably supported on the mounting plate (1), and the second bevel gear (32) is meshed with the first bevel gear (31).

3. A drum screen capable of multi-stage screening according to claim 1, characterized in that: Two groups of mounting rings (14) are rotatably sleeved on the outer walls at both ends of the first drum screen (13); the two groups of mounting rings (14) are fixedly connected to the mounting plate (1) and the fixed frame; and a plurality of rotating wheels (21) in contact with the outer wall of the first drum screen (13) are arranged between the two mounting rings (14) in the same group.

4. A drum screen capable of multi-stage screening according to claim 2, characterized in that: Both ends of the second drum screen (15) extend to the outside of the first drum screen (13), and both ends of the outer walls of the second drum screen (15) are rotatably sleeved with limit rings (16), the limit rings (16) are fixedly connected to the mounting plate (1), and a plurality of pulleys (152) in contact with the outer wall of the second drum screen (15) are provided between two limit rings (16) in the same group, and a transmission wheel (22) in contact with the outer wall of the second drum screen (15) is also provided at one end of the second drum screen (15) close to the feed frame (11), and the transmission wheel (22) is rotatably supported on the mounting plate (1).

5. A drum screen capable of multi-stage screening according to claim 4, characterized in that: The driving mechanism (2) comprises a motor (25) fixedly mounted on a mounting plate (1); an output end of the motor (25) is connected to a rotating rod (26) via a coupling; a second belt pulley (24) is fixedly sleeved on an outer wall of the rotating rod (26); a first belt pulley (23) is also supported on the mounting plate (1) for rotation; the first belt pulley (23) and the second belt pulley (24) are connected via a belt transmission, and a transmission wheel (22) and the first belt pulley (23) are connected via a fixed shaft.

6. A drum screen capable of multi-stage screening according to claim 5, characterized in that: One end of the rotating rod (26) away from the motor (25) is fixedly connected to a set of transmission wheels (22), and the first bevel gear (31) is fixedly sleeved on the outer wall of the rotating rod (26).

7. The drum screen capable of multi-stage screening according to claim 2, characterized in that: A groove (371) is provided on one side surface of the feed frame (37), and a movable rod (35) passes through the groove (371) and extends to the feed frame (37); a support plate (372) supporting the movable rod (35) is fixedly connected to the outer wall of the feed frame (37); a discharge pipe (39) connected to the feed frame (37) is fixedly connected to one side of the bottom end of the feed frame (37), and the discharge pipe (39) extends away from one end of the feed frame (37) to the inside of the second drum screen (15).

8. A drum screen capable of multi-stage screening according to claim 7, characterized in that: The inner wall of the feed frame (37) is located below the lower hopper (38) and is symmetrically fixedly connected to two groups of limit rods (36), and the outer wall of the blocking block (351) is symmetrically fixedly connected to two groups of limit blocks (352), and the extended ends of the two groups of limit blocks (352) are respectively movably sleeved on the outer walls of the two groups of limit rods (36).

9. The drum screen capable of multi-stage screening according to claim 1, characterized in that: The end of the second drum screen (15) away from the unloading mechanism (3) is provided with a second material guide plate (151) fixedly connected to the limit ring (16); the end of the first drum screen (13) located below the second material guide plate (151) is provided with a first material guide plate (131) fixedly connected to the mounting ring (14); the surface of the mounting plate (1) is provided with an opening matching the first drum screen (13), and the lower surface of the mounting plate (1) is fixedly connected to a material guide frame (12) matching the opening.

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