A screening machine and a drum therefor

Abstract

The utility model discloses a screening machine and drum thereof, including rolling frame and screen, the installation groove of installing for screen is arranged on the rolling frame, the installation groove has a plurality of around the circumference distribution, the screen has a plurality and with the one -to -one correspondence of installation groove, the one side of installation groove has the insertion slot of the one end plug connection for screen, the one end of screen is away from the insertion slot and has the flanging, the flanging is connected fixed with rolling frame through screw or bolt, and in this way sets up each screen on the drum into independent detachable single individual, when the screen of drum appears partial breakage in actual use, only needs to dismount and change single screen, compares the whole replacement and saves unnecessary waste, effectively reduces the cost, the screen is inserted through one end and insertion slot, then the other end is connected fixed through bolt, only needs to dismount the bolt of one side when dismounting can realize the change of screen, reduces the use amount of bolt, reduces the screen change time, and the dismounting operation is more convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of particle screening equipment, and in particular to a screening machine and its drum. Background Technology

[0002] A screening machine is a mechanical device that uses a screen surface and vibration / motion to classify and separate mixed materials according to differences in particle size, shape, or density. In the field of fertilizer production, granulation may also result in particles of different sizes, requiring the use of a screening machine to screen fertilizer granules or powders.

[0003] Currently, screening machines mainly consist of a machine body, a drum, and a drive source. The drum has a screen for filtering and screening particles. The drive source drives the drum to rotate, thereby screening the internal particles. Particles smaller than the screen aperture are discharged from the bottom of the machine body. Currently, most screens are ring-shaped and welded to the drum. However, after long-term use, the screens are prone to local damage, making them difficult to replace or causing unnecessary waste when replacing the entire screen. Further improvements are needed. Utility Model Content

[0004] To facilitate screen replacement and reduce unnecessary cost waste, this application provides a screening machine and its drum.

[0005] This application provides a drum for a screening machine, which adopts the following technical solution: A screening machine drum includes a roller frame and a screen. The roller frame is provided with mounting grooves for installing the screens. Multiple mounting grooves are distributed around the circumference. Multiple screens are provided, each corresponding to a mounting groove. One side of each mounting groove has a slot for inserting one end of the screen. The end of the screen away from the slot has a flange. The flange is connected and fixed to the roller frame by screws or bolts.

[0006] Optionally, the screen includes a frame and a mesh, wherein the frame has a central strip fixed to the mesh, and the central strip is integrally formed with the frame.

[0007] Optionally, the screen is arc-shaped and has eight sections distributed around its circumference.

[0008] Optionally, the roller frame includes an outer ring, an inner ring, and a connecting frame. The two ends of the connecting frame are connected to the outer ring and the inner ring. The outer ring is provided with a connecting strip that abuts against and supports the flange.

[0009] Optionally, the connecting frame includes radially arranged connecting rods, with multiple connecting rods evenly distributed around the circumference, and a reinforcing strip connecting adjacent connecting rods.

[0010] This application also provides a screening machine with the advantage of easy screen replacement, and adopts the following technical solution: A screening machine includes the aforementioned drum, a drive source, and a housing. The drum is rotatably connected inside the housing, and the drive source drives the drum to rotate. A feed inlet is provided on one side of the housing, and a discharge outlet is provided at the bottom of the housing. A roller brush is installed inside the housing, and the roller brush abuts against the surface of the screen.

[0011] Optionally, the roller brushes are spaced apart along the roller axis, and the roller brushes are symmetrically arranged on both sides of the housing, with the roller brushes on both sides being alternately staggered along the roller axis.

[0012] Optionally, a mounting bracket for mounting the roller brush is fixed inside the housing. A mounting seat is mounted on the mounting bracket. Both ends of the roller brush are rotatably connected to the mounting seat. The mounting bracket has an oblong hole for mounting the mounting seat.

[0013] Optionally, a dust suction port is provided on the top of the housing, which is used to connect a dust collection device.

[0014] Optionally, inspection ports are provided on both sides of the casing along its length, and multiple inspection ports are distributed along the length of the casing. Inspection doors are provided at each inspection port, and one side of the inspection door is hinged to the casing. A clamping member is provided on the casing to press the inspection door away from the hinged side.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. Each screen on the drum is designed as an independent and detachable individual unit. In actual use, if a screen on the drum is partially damaged, only the individual screen needs to be removed and replaced. Compared with replacing the entire screen, this saves unnecessary waste and effectively reduces costs. The screen is connected to a slot at one end and then fixed with bolts at the other end. During disassembly and assembly, only the bolts on one side need to be removed or removed to replace the screen, reducing the number of bolts used and the time required to replace the screen. The disassembly and assembly operations are more convenient and faster. 2. The middle strip can effectively improve the structural strength of the net and reduce the tendency for the middle part of the net to deform and sag. 3. A roller brush is installed inside the machine casing. During the rotation of the roller, the roller brush comes into contact with the roller surface, which can clean the impurities on the screen and effectively prevent the screen from clogging. The roller brush adopts a split structure and is alternately arranged on both sides of the roller, which has a better fit with the screen, improves the screen life and cleaning effect, and reduces the cost of use. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of Example 1.

[0017] Figure 2 This is a structural diagram from the bottom view of Example 1.

[0018] Figure 3This is a structural diagram of the roller in Example 1.

[0019] Figure 4 This is a schematic diagram of the internal structure of the screen in Example 1 with some parts hidden.

[0020] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0021] Figure 6 This is a partial structural diagram of the roller in Example 1.

[0022] Figure 7 This is a three-dimensional view of the sieve in Example 1.

[0023] Figure 8 This is a perspective view of the clamping component in Example 1.

[0024] Figure 9 This is a partial structural diagram of the roller in Example 2.

[0025] Explanation of reference numerals in the attached figures: 1. Casing; 2. Drum; 3. Drive motor; 4. Reducer; 5. Central shaft; 6. Screen; 7. Feed inlet; 8. Discharge outlet; 9. Drop outlet; 10. Mounting bracket; 11. Mounting base; 12. Roller brush; 13. Dust suction port; 14. Roller frame; 15. Mounting groove; 16. Slot; 17. Plug-in end; 18. Flanged edge; 19. Connecting hole; 20. Bolt; 21. Nut; 22. Frame ; 23. Mesh body; 24. Middle bar; 25. Outer ring; 26. Inner ring; 27. Connecting rod; 28. Reinforcing bar; 29. ​​Connecting bar; 30. Inspection port; 31. Inspection door; 32. Clamping component; 33. Base; 34. Pressure rod; 35. Handle; 36. Pressure column; 37. Connecting rod; 38. Extension; 39. Protrusion; 40. Slide groove; 41. Threaded section; 42. Edge retainer; 43. Movable groove. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0027] Example 1, a screening machine, such as Figures 1-4As shown, the device includes a housing 1, a drum 2, and a drive source. The drive source is located on one side of the housing 1 and includes a drive motor 3 and a reducer 4. A central shaft 5 passes through the center of the drum 2 and is rotatably connected to the inside of the housing 1 via the central shaft 5. The input end of the reducer 4 is connected to the drive motor 3, and the output end of the reducer 4 is connected to the central shaft 5 to drive the drum 2 to rotate. Multiple screens 6 are evenly distributed on the outer surface of the drum 2. A feed inlet 7 is provided on one side of the housing 1, and the material enters the inside of the drum 2 inside the housing 1 through the feed inlet 7. The bottom of the drum 2 is provided with a discharge port 8. After the material enters the drum 2, as the drum 2 rotates, the material with particles smaller than the screen holes on the screen 6 falls and is discharged from the discharge port 8, while the material with particles larger than the screen holes on the screen 6 remains inside the drum 2, thus achieving the screening of material particles. At one end of the bottom of the casing 1, there is a discharge port 9 that communicates with the inside of the drum 2. As the particles inside the drum 2 are continuously rotated and conveyed forward, they eventually come out from the discharge port 9. Finally, the different particles screened are discharged from the discharge port 8 and the discharge port 9 respectively.

[0028] like Figure 4 and Figure 5 As shown, mounting brackets 10 are provided on both sides inside the housing 1. Mounting seats 11 are fixedly mounted on the mounting brackets 10. A roller brush 12 is rotatably connected to the mounting seat 11. The roller brush 12 abuts against the outer surface of the screen 6 on the roller 2. During the rotation of the roller 2, the roller brush 12 abuts against the screen 6 on the roller 2 to achieve automatic cleaning, thereby reducing the phenomenon of screen 6 clogging. The mounting bracket 10 has an oblong hole for mounting the mounting seat 11. The mounting bracket 10 is installed and fixed by fasteners passing through the oblong hole. The oblong hole makes the mounting seat 11 partially fixed. With a certain degree of adjustability, the position of the roller brush 12 can be adjusted appropriately as needed during actual use to ensure that the roller brush 12 fits well against the screen 6 and maintains the cleaning effect. In this embodiment, multiple roller brushes 12 are set separately, with each roller brush 12 being a section of one meter and multiple roller brushes 12 are set at intervals along the length of the roller 2. The roller brushes 12 on both sides of the roller 2 are alternately staggered, so that the overall length of the roller brush 12 is relatively short and can fit better against the screen 6, thereby improving the cleaning effect. The alternating arrangement of the roller brushes 12 can achieve cleaning of each area and avoid the phenomenon of excessive dust concentration during cleaning.

[0029] like Figure 1 As shown, a dust suction port 13 is provided on the top of the casing 1. In actual use, the dust suction port 13 is connected to a dust collection device through a pipe. In this way, the dust generated during the actual operation can be sucked away through the dust suction port 13, avoiding the phenomenon of dust generation when the screening machine is used, and effectively improving the workshop environment.

[0030] like Figure 6 and Figure 7As shown, the roller 2 includes a roller frame 14 and a screen 6. Multiple screens 6 are evenly distributed around the circumference of the roller frame 14. In this embodiment, eight screens 6 are evenly distributed around the circumference of the roller frame 14. Multiple mounting grooves 15 for mounting the screens 6 are evenly distributed around the outer circumference of the roller frame 14. Each mounting groove 15 corresponds to a screen 6. A slot 16 is provided on the inner wall of one end of each mounting groove 15 for inserting one end of the screen 6. One end of the screen 6 is a insertion end 17 that inserts into the slot 16. The end of the screen 6 away from the insertion end 17 has a flange 18. The flange 18 is connected and fixed to the roller frame 14 by screws or bolts 20. In this embodiment, bolts 20 are used. The flange 18 and the roller frame 14 have corresponding connecting holes 19. The bolt 20 passes through the flange 18 and the connecting holes 19 on the roller frame 14, and its end is tightened and fixed by a nut 21. By setting each screen 6 on the roller 2 as an independent and detachable individual, when a screen 6 on the roller 2 is partially damaged in actual use, only the individual screen 6 needs to be removed and replaced. Compared with replacing the whole screen, this saves unnecessary waste and effectively reduces costs. The screen 6 is connected to the slot 16 at one end and then fixed at the other end by the bolt 20. When disassembling and assembling, only the bolt 20 on one side needs to be removed or installed to replace the screen 6, reducing the number of bolts used and the time required to replace the screen 6. The disassembly and assembly operations are more convenient and faster.

[0031] like Figure 6 and Figure 7 As shown, the screen 6 includes a frame 22 and a mesh 23. The mesh 23 is fixed inside the frame 22. In this embodiment, the screen 6 is arc-shaped. A middle strip 24 is provided in the middle of the frame 22. The middle strip 24 is fixedly connected to the mesh 23 and is integrally formed with the frame 22. The middle strip 24 can effectively improve the structural strength of the mesh 23 and reduce the possibility of deformation and sagging in the middle of the mesh 23.

[0032] like Figure 6 As shown, the roller frame 14 includes an outer ring 25, an inner ring 26, and a connecting frame. The inner ring 26 is used for connecting and fitting the central shaft 5. The two ends of the connecting frame are used to connect the outer ring 25 and the inner ring 26. The connecting frame includes connecting rods 27 arranged radially. Multiple connecting rods 27 are evenly distributed around the circumference. A reinforcing strip 28 is provided between adjacent connecting rods 27 to connect them, which can effectively improve the structural strength of the connecting frame. A connecting strip 29 is provided on the outer ring 25 to abut against the supporting flange 18. A connecting hole 19 is opened on the connecting strip 29. In actual use, the flange 18 on the screen 6 abuts against the connecting strip 29. Bolts 20 pass through the flange 18 and the connecting hole 19 on the connecting strip 29 to connect and fix them, thereby fixing the screen 6 on the roller frame 14.

[0033] like Figure 1 and Figure 8As shown, inspection ports 30 are provided on both sides of the length direction of the housing 1. Multiple inspection ports 30 are distributed along the length direction of the housing 1. Each inspection port 30 is provided with an inspection door 31 to close it. One side of the inspection door 31 is hinged to the housing 1. A clamping member 32 is provided on the housing 1. The clamping member 32 is used to clamp the side of the inspection door 31 away from the hinge. With the design of the inspection port 30, the corresponding inspection door 31 can be opened to carry out internal maintenance in actual use, which is convenient for routine maintenance operations. After the maintenance is completed, the inspection door 31 is closed and the clamping member 32 is used to clamp the inspection door 31 to keep it in a closed state.

[0034] like Figure 8 As shown, the clamping component 32 includes a base 33, a pressure rod 34, and a handle 35. The base 33 is fixed to the housing 1 by screws. One end of the pressure rod 34 is hinged to the front end of the base, and the other end of the pressure rod 34 is provided with a pressure post 36, which is used to press against the access door 31 to keep it closed. A connecting rod 37 is provided at the end of the base 33 away from the pressure rod 34. One end of the connecting rod 37 is hinged to the base 33, and the other end is hinged to the end of the handle 35. The hinged end of the handle 35 has an extension 38 facing the pressure rod 34, and the pressure rod 34 has a protrusion 39. The extension 38 and the protrusion 39 are hinged by a pivot. In this way, by flipping the handle 35, the pressure rod 34 can be flipped to achieve the operation of clamping and loosening. The operation is simple, convenient, and labor-saving.

[0035] like Figure 8 As shown, a groove 40 is provided along the length of the pressure rod 34, and the pressure column 36 is slidably connected in the groove 40. Threaded sections 41 are provided at both ends of the pressure column 36, and locking nuts are threaded onto the threaded sections 41. The locking nuts are located on the upper and lower sides of the pressure rod 34, respectively. By loosening the locking nuts, the position of the pressure column 36 can be adjusted by sliding, so that the pressure column 36 can press well into the appropriate position of the inspection door 31, thereby improving the adjustability of the clamping component 32.

[0036] Example 2, a screening machine, such as Figure 9As shown, the main difference between this and the embodiment is that there are baffles 42 on both sides of the mounting groove 15 of the roller frame 14 to prevent the screen 6 from falling out. At the same time, there is a movable groove 43 at the slot 16 of the mounting groove 15 for the screen 6 to slide and adjust in the circumferential direction. The baffles 42 can prevent the screen 6 from falling out, so that the screen 6 is located inside the roller frame 14. The design of the movable groove 43 facilitates the disassembly of the screen 6. When disassembling, after removing the bolt 20, the screen 6 is slid appropriately so that its flange 18 can be moved down appropriately to disengage from the connecting strip 29. Then, the other end of the screen 6 is pulled out from the slot 16 to remove the screen 6 from the inside. It should be noted that the screen 6 has a certain degree of deformation capability to ensure that it can be removed from the inside of the roller frame 14. This installation method of the screen 6 can maintain the neatness of the outer surface of the roller 2 and will not cause unevenness of its outer surface due to the installation error of the screen 6.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drum for a screening machine, characterized in that: The device includes a roller frame (14) and a screen (6). The roller frame (14) is provided with mounting grooves (15) for mounting the screen (6). Multiple mounting grooves (15) are distributed around the circumference. The screen (6) has multiple mounting grooves, each corresponding to one of the mounting grooves (15). One side of the mounting groove (15) has a slot (16) for inserting one end of the screen (6). The end of the screen (6) away from the slot (16) has a flange (18). The flange (18) is connected and fixed to the roller frame (14) by screws or bolts (20).

2. The drum of a screening machine according to claim 1, characterized in that: The screen (6) includes a frame (22) and a mesh (23). The frame (22) has a middle strip (24) fixed to the mesh (23) in the middle part. The middle strip (24) is integrally formed with the frame (22).

3. The drum of a screening machine according to claim 2, characterized in that: The screen (6) is arc-shaped and has 8 sections distributed around its circumference.

4. The drum of a screening machine according to claim 1, characterized in that: The roller frame (14) includes an outer ring (25), an inner ring (26) and a connecting frame. The two ends of the connecting frame are connected to the outer ring (25) and the inner ring (26). The outer ring (25) is provided with a connecting strip (29) that abuts against the supporting flange (18).

5. The drum of a screening machine according to claim 4, characterized in that: The connecting frame includes radially arranged connecting rods (27), and multiple connecting rods (27) are evenly distributed around the circumference. A reinforcing strip (28) is provided between adjacent connecting rods (27) to connect them.

6. A screening machine, characterized in that: The device includes the roller (2) as described in any one of claims 1-5, and also includes a drive source and a housing (1). The roller (2) is rotatably connected inside the housing (1). The drive source drives the roller (2) to rotate. A feed inlet (7) is provided on one side of the housing (1). A discharge outlet (8) is provided at the bottom of the housing (1). A roller brush (12) is installed inside the housing (1). The roller brush (12) abuts against the surface of the screen (6).

7. A screening machine according to claim 6, characterized in that: The roller brushes (12) are spaced apart along the axial direction of the roller (2). The roller brushes (12) are symmetrically arranged on both sides of the housing (1). The roller brushes (12) on both sides are alternately staggered along the axial direction of the roller (2).

8. A screening machine according to claim 7, characterized in that: The housing (1) is fixed with a mounting bracket (10) for mounting the roller brush (12). The mounting bracket (10) is equipped with a mounting seat (11). The two ends of the roller brush (12) are rotatably connected to the mounting seat (11). The mounting bracket (10) has a waist-shaped hole for mounting the mounting seat (11).

9. A screening machine according to claim 6, characterized in that: The top of the housing (1) is provided with a dust suction port (13), which is used to connect a dust suction device.

10. A screening machine according to claim 6, characterized in that: The housing (1) has inspection ports (30) on both sides along its length. Multiple inspection ports (30) are distributed along the length of the housing (1). Inspection doors (31) are provided at each inspection port (30). One side of the inspection door (31) is hinged to the housing (1). A clamping member (32) is provided on the housing (1) to press the inspection door (31) away from the hinge side.

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