Screening equipment

Abstract

The utility model relates to the technical field of coal mine processing, and particularly discloses screening equipment which comprises a trough, two fixing seats are arranged in the trough, a filter screen cylinder is arranged between the two fixing seats, a feeding mechanism is arranged on the side, away from the filter screen cylinder, of one fixing seat, and a driving device is arranged on the side, away from the filter screen cylinder, of the other fixing seat. A limiting rod is arranged on the side edge of the filter screen cylinder, a brush is fixedly connected to the outer side of the limiting rod and attached to the mesh wall of the filter screen cylinder, and a transmission mechanism used for pushing the limiting rod to shake in a reciprocating mode is arranged on the fixing base. The driving device controls the filter screen cylinder to rotate, the limiting rod on the side edge of the filter screen cylinder can brush coal attached to meshes of the filter screen cylinder from the meshes of the filter screen cylinder through the brush, the transmission mechanism pushes the limiting rod to shake in a reciprocating mode, the cleaning effect is improved, the limiting rod shakes off the coal on the brush in the shaking process, and it is guaranteed that the meshes of the filter screen cylinder are smooth.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine processing, in particular to a screening device. Background Art

[0002] After underground coal mining is completed, the coal will be sent out through a belt conveyor and transported to the coal yard by a transport vehicle for subsequent processing. During the subsequent processing, the coal will be screened using screening technology.

[0003] For example, the Chinese patent application number CN202220032306.5 discloses a coal screening device used in coal mining, including a screening box, a drive motor fixedly connected to one side of the screening box, a connecting shaft fixedly connected to the output end of the drive motor, a first gear fixedly connected to one end of the connecting shaft, a second gear meshingly connected to the first gear, a rotating shaft fixedly connected inside the second gear, a screening drum fixedly connected to one end of the rotating shaft, a plurality of evenly distributed screening holes are provided on the circumference of the screening drum, and a feed port is provided on one side of the screening drum. The screening device can stir the ore through a stirring rod, speed up the screening rate, and reduce the possibility of ore and the like blocking the screening holes. The stirring rod is arranged on the inner side of the screening drum. Since there is a gap between the blades on the outer side of the stirring rod, during the cleaning process, the ore in the gap area will still be blocked in the screening hole, making it difficult to clean it out, affecting the screening efficiency of the screening device. Utility Model Content

[0004] In response to the above problems, the utility model proposes a screening device to solve the shortcomings of existing screening equipment. In the process of cleaning the screening cylinder, the blades on the outside of the stirring rod will still block the ore in the gap between the blades, making it difficult to clean it, thus affecting the screening efficiency of the screening device.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a screening device, including a material trough, two fixed seats are provided in the material trough, a filter cylinder is provided between the two fixed seats, and both ends of the filter cylinder are rotatably connected to the fixed seats;

[0006] A feeding mechanism is provided on one side of one of the fixing seats away from the filter cylinder, and the feeding mechanism is connected to the filter cylinder;

[0007] A driving device for controlling the rotation of the filter drum is provided on the side of the other fixing seat away from the filter drum;

[0008] A limit rod is provided on the side of the filter cylinder, and a brush is fixedly connected to the outside of the limit rod. The brush fits the mesh wall of the filter cylinder, and a transmission mechanism for pushing the limit rod to swing back and forth is provided on the fixed seat.

[0009] A further improvement is that the feeding mechanism includes a feeding auger and a hopper, the hopper is placed above the feeding auger, the output end of the feeding auger is connected to the lower port of the hopper, the output end of the feeding auger passes through the fixed seat and extends into the filter cylinder, and the feeding auger is fixedly connected to the fixed seat.

[0010] Further improvements are: the driving device includes a main shaft, the main shaft is fixedly connected to the end of the filter cylinder away from the feeding auger, the main shaft passes through the fixed seat and is rotatably connected to the fixed seat, a first gear is fixedly connected to the outside of the main shaft, a motor is fixedly connected to the outside of the fixed seat, a second gear is fixedly connected to the output end of the motor, and the second gear is meshed with the first gear.

[0011] Further improvements are: two sliding sleeves are provided on the outer side of the limit rod, the two sliding sleeves are detachably connected to the outer sides of the two fixed seats, the limit rod is slidably connected to the sliding sleeves, the limit rod is fixedly connected to a positioning block at one end close to the feeding mechanism, and a spring is fixedly connected between the positioning block and the limit rod.

[0012] Further improvements are: the transmission mechanism includes a rotating shaft and an arc matching block, the arc matching block is fixedly connected to the end of the limit rod away from the positioning block, the rotating shaft is rotatably connected to the fixed seat, a third gear is fixedly connected to the outside of the rotating shaft, the third gear is engaged with the first gear, and a turntable is fixedly connected to the end of the rotating shaft away from the fixed seat, and the turntable is provided with a plurality of arc protrusions that cooperate with the arc matching block.

[0013] A further improvement is that: a bolt plate is fixedly connected to the side of the sliding sleeve, a fixing bolt is threadedly connected to the bolt plate, and the fixing bolt passes through the bolt plate and is threadedly connected to a bolt hole opened on the outside of the fixing seat.

[0014] A further improvement is that a conveyor belt is laid in the material trough, the input end of the conveyor belt is placed below the filter cylinder, and the output end of the conveyor belt extends to the outside of the material trough.

[0015] A further improvement is that the cross section of the limiting rod is a polygonal prism, and a polygonal groove adapted to the limiting rod is provided on the inner side of the sliding sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The driving device controls the rotation of the filter drum. The limit rod on the side of the filter drum will use the brush to brush the coal attached to the mesh of the filter drum. The transmission mechanism pushes the limit rod to swing back and forth to improve the cleaning effect. The limit rod will shake off the coal on the brush during the shaking to ensure that the mesh holes on the filter drum are unobstructed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 It is a structural diagram of the middle material trough of the present utility model.

[0020] Figure 2 It is a structural diagram of the filter cylinder in the utility model.

[0021] Figure 3 It is a structural diagram of the fixing seat in the utility model.

[0022] Figure 4 It is a structural diagram of the sliding sleeve in the utility model.

[0023] Among them: 1. Material trough; 2. Material hopper; 3. Feeding auger; 4. Fixed seat; 5. Filter cylinder; 6. Main shaft; 7. Conveyor belt; 8. Brush; 9. Sleeve; 10. Positioning block; 11. Spring; 12. Limit rod; 13. Turntable; 14. Arc protrusion; 15. Rotating shaft; 16. Arc matching block; 17. First gear; 18. Motor; 19. Second gear; 20. Third gear. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] according to Figure 1 、 2 As shown in Figures 3 and 4, a screening device is proposed in this embodiment, including a trough 1, two fixing seats 4 are provided in the trough 1, a filter cylinder 5 is provided between the two fixing seats 4, and both ends of the filter cylinder 5 are rotatably connected to the fixing seats 4;

[0026] A feeding mechanism is provided on one side of the fixing seat 4 away from the filter cylinder 5, and the feeding mechanism is connected to the filter cylinder 5;

[0027] A driving device for controlling the rotation of the filter drum 5 is provided on the other side of the fixing base 4 away from the filter drum 5, and the driving device is fixedly connected to the filter drum 5;

[0028] The feeding mechanism feeds the coal into the filter drum 5, which is then rotated between two fixed seats 4 by a drive mechanism. The rotation of the filter drum 5 removes particulate matter from the coal. There is a door on the back of the filter drum 5, which is opened to remove the material. This will not be explained in detail here.

[0029] A limit rod 12 is provided on the side of the filter cylinder 5, and a brush 8 is fixedly connected to the outside of the limit rod 12. The brush 8 fits the outer wall of the filter cylinder 5, and a transmission mechanism for pushing the limit rod 12 to swing back and forth is provided on the fixed seat 4.

[0030] The driving device controls the rotation of the filter cylinder 5. The limiting rod 12 on the side of the filter cylinder 5 will brush the coal material attached to the outside of the filter cylinder 5 from the outside of the filter cylinder 5 through the brush 8. The transmission mechanism pushes the limiting rod 12 to swing back and forth. The limiting rod 12 shakes off the coal material on the brush 8 during the shaking, and improves the cleaning effect, ensuring that the mesh holes on the filter cylinder 5 are unobstructed.

[0031] About the feeding agency:

[0032] The feeding mechanism includes a feeding auger 3 and a hopper 2. The hopper 2 is placed above the feeding auger 3. The output end of the feeding auger 3 is connected to the lower end of the hopper 2. The output end of the feeding auger 3 extends through the fixing base 4 into the filter cylinder 5. The feeding auger 3 is fixedly connected to the fixing base 4. The coal to be screened is fed into the hopper 2 from above by a feeder. The feeding auger 3 feeds the coal in the hopper 2 into the filter cylinder 5 for screening.

[0033] Regarding the drive unit;

[0034] The drive device includes a main shaft 6, which is fixedly connected to the end of the filter drum 5 away from the feed auger 3. The main shaft 6 passes through the fixed base 4 and is rotatably connected to the fixed base 4. A first gear 17 is fixedly connected to the outside of the main shaft 6. A motor 18 is fixedly connected to the outside of the fixed base 4. The output end of the motor 18 is fixedly connected to a second gear 19, which meshes with the first gear 17. The motor 18 drives the second gear 19 to rotate. As the second gear 19 rotates, it meshes with the first gear 17, driving the first gear 17 and the main shaft 6 to rotate. Since the filter drum 5 is fixed to the main shaft 6, the filter drum 5 will also rotate.

[0035] It's worth explaining in detail that two sliding sleeves 9 are sleeved around the outside of the limiting rod 12. These sleeves 9 are detachably connected to the outside of the two fixing seats 4. The limiting rod 12 is slidably connected to the sleeves 9. A positioning block 10 is fixedly connected to the end of the limiting rod 12 near the feeding mechanism, and a spring 11 is fixedly connected between the positioning block 10 and the limiting rod 12. The sleeves 9 limit the limiting rod 12 from both ends and support the limiting rod 12 in swinging left and right.

[0036] The driving device controls the transmission mechanism in a linkage manner. Specifically, the transmission mechanism includes a rotating shaft 15 and an arc matching block 16. The arc matching block 16 is fixedly connected to the end of the limit rod 12 away from the positioning block 10. The rotating shaft 15 is rotatably connected to the fixed seat 4. A third gear 20 is fixedly connected to the outside of the rotating shaft 15. The third gear 20 is engaged with the first gear 17. The rotating shaft 15 is fixedly connected to the end away from the fixed seat 4 with a turntable 13. The turntable 13 is provided with a plurality of arc protrusions 14 that cooperate with the arc matching block 16.

[0037] The spring 11 pushes the limit rod 12 through the positioning block 10, so that the limit rod 12 approaches the turntable 13, and the arc matching block 16 on the limit rod 12 contacts the turntable 13. When the first gear 17 drives the main shaft 6 to rotate, the first gear 17 will engage with the third gear 20, driving the rotating shaft 15 to rotate. When the rotating shaft 15 rotates, the turntable 13 will also rotate. When the arc matching block 16 on the turntable 13 contacts the arc matching block 16, the arc protrusion 14 will squeeze the arc matching block 16, causing the limit rod 12 to move to one side of the feeding mechanism, thereby realizing the left and right shaking of the limit rod 12.

[0038] To facilitate assembly and removal of the limiting rod 12 and brush 8, in a preferred embodiment, a bolt plate is fixedly connected to the side of the sliding sleeve 9, and a fixing bolt is threadedly connected to the bolt plate. The fixing bolt passes through the bolt plate and is threadedly connected to a bolt hole formed on the outside of the fixing base 4. When removing the limiting rod 12 from the side of the filter drum 5, the fixing bolt is rotated and unscrewed from the bolt hole on the outside of the fixing base 4, and the sliding sleeve 9 and the limiting rod 12 can be completely removed.

[0039] In order to facilitate the delivery of the screened ore, in a preferred embodiment, a conveyor belt 7 is laid in the trough 1. The input end of the conveyor belt 7 is placed below the filter drum 5, and the output end of the conveyor belt 7 extends outside the trough 1. The screened ore passes through the filter drum 5 and falls onto the conveyor belt 7, which delivers the ore outward during movement.

[0040] In a preferred embodiment, the cross-section of the limiting rod 12 is a polygonal prism, and the inner side of the sliding sleeve 9 is provided with a polygonal groove adapted to the limiting rod 12. The advantage of this design is that, while the limiting rod 12 does not affect the left and right swinging of the sliding sleeve 9 along the inner side wall, the sliding sleeve 9 cooperates with the limiting rod 12 to limit the rotation of the sliding sleeve 9, ensuring that the brush 8 outside the limiting rod 12 can continuously squeeze the rotating filter drum 5, thereby improving the cleaning effect of the filter drum 5.

[0041] Working principle:

[0042] The feeding mechanism feeds the coal into the filter drum 5, which is then rotated between two fixed seats 4 by a drive mechanism. The rotation of the filter drum 5 removes particulate matter from the coal. There is a door on the back of the filter drum 5, which is opened to remove the material. This will not be explained in detail here.

[0043] The driving device controls the rotation of the filter cylinder 5. The limiting rod 12 on the side of the filter cylinder 5 will brush the coal material attached to the outside of the filter cylinder 5 from the outside of the filter cylinder 5 through the brush 8. The transmission mechanism pushes the limiting rod 12 to swing back and forth. The limiting rod 12 shakes off the coal material on the brush 8 during the swing, thereby improving the cleaning effect and ensuring that the mesh holes on the filter cylinder 5 are unobstructed.

[0044] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A screening device, comprising a trough (1), wherein two fixing seats (4) are provided in the trough (1), a filter cylinder (5) is provided between the two fixing seats (4), and both ends of the filter cylinder (5) are rotatably connected to the fixing seats (4), characterized in that: A feeding mechanism is provided on one side of the fixing seat (4) away from the filter cylinder (5), and the feeding mechanism is in communication with the filter cylinder (5); A driving device for controlling the rotation of the filter cylinder (5) is provided on a side of the other fixing seat (4) away from the filter cylinder (5); A limiting rod (12) is provided on the side of the filter cylinder (5), a brush (8) is fixedly connected to the outside of the limiting rod (12), and the brush (8) is in contact with the outer wall of the filter cylinder (5). A transmission mechanism for pushing the limiting rod (12) to swing back and forth is provided on the fixing seat (4).

2. A screening device according to claim 1, characterized in that: The feeding mechanism comprises a feeding auger (3) and a hopper (2), wherein the hopper (2) is placed above the feeding auger (3), the output end of the feeding auger (3) is communicated with the lower end of the hopper (2), the output end of the feeding auger (3) passes through the fixing seat (4) and extends into the filter cylinder (5), and the feeding auger (3) is fixedly connected to the fixing seat (4).

3. A screening device according to claim 2, characterized in that: The driving device comprises a main shaft (6), the main shaft (6) being fixedly connected to one end of the filter cylinder (5) away from the feeding auger (3), the main shaft (6) passing through the fixing seat (4) and being rotatably connected to the fixing seat (4), a first gear (17) being fixedly connected to the outside of the main shaft (6), a motor (18) being fixedly connected to the outside of the fixing seat (4), a second gear (19) being fixedly connected to the output end of the motor (18), and the second gear (19) being meshed with the first gear (17).

4. A screening device according to claim 3, characterized in that: Two sliding sleeves (9) are sleeved on the outer side of the limiting rod (12), and the two sliding sleeves (9) are detachably connected to the outer sides of the two fixing seats (4). The limiting rod (12) is slidably connected to the sliding sleeves (9). A positioning block (10) is fixedly connected to one end of the limiting rod (12) close to the feeding mechanism, and a spring (11) is fixedly connected between the positioning block (10) and the limiting rod (12).

5. A screening device according to claim 4, characterized in that: The transmission mechanism comprises a rotating shaft (15) and an arc matching block (16), wherein the arc matching block (16) is fixedly connected to one end of the limiting rod (12) away from the positioning block (10), the rotating shaft (15) is rotatably connected to the fixed seat (4), a third gear (20) is fixedly connected to the outer side of the rotating shaft (15), and the third gear (20) is meshed with the first gear (17), and a rotating disk (13) is fixedly connected to one end of the rotating shaft (15) away from the fixed seat (4), and a plurality of arc protrusions (14) are provided on the rotating disk (13) for matching with the arc matching block (16).

6. A screening device according to claim 4, characterized in that: The side of the sliding sleeve (9) is fixedly connected to a bolt plate, and the bolt plate is threadedly connected to a fixing bolt, and the fixing bolt passes through the bolt plate and is threadedly connected to a bolt hole opened on the outside of the fixing seat (4).

7. A screening device according to claim 1, characterized in that: A conveyor belt (7) is laid in the material trough (1), the input end of the conveyor belt (7) is placed below the filter cylinder (5), and the output end of the conveyor belt (7) extends to the outside of the material trough (1).

8. A screening device according to claim 4, characterized in that: The cross section of the limiting rod (12) is a polygonal prism, and a polygonal prism groove adapted to the limiting rod (12) is provided on the inner side of the sliding sleeve (9).

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