Winnowing machine with adjustable discharging turning plate

Abstract

The utility model relates to a winnowing machine, in particular to a winnowing machine with an adjustable discharging turning plate, which comprises a feeding mechanism, a sorting platform connected with the feeding mechanism and a discharging mechanism connected with the sorting platform, the discharging mechanism comprises a discharging hopper with openings at the upper end and the lower end, and the upper end of the discharging hopper faces the sorting platform. One or more discharging turning plates used for separating the discharging hopper are arranged in the discharging hopper, gaps are formed between the discharging turning plates and the discharging hopper, rotating shafts parallel to the discharging turning plates are fixedly arranged at the lower ends of the discharging turning plates, the rotating shafts rotatably penetrate through the discharging hopper, and driving parts used for driving the rotating shafts to rotate are connected to the rotating shafts. And the discharging turning plate is movably arranged in the discharging hopper. According to the utility model, the same discharging hopper can adapt to coal briquettes with different gangue contents, the adaptability is improved, different turning plate adjusting modes can be selected according to different requirements, and the discharging hopper is suitable for separation of coal and gangue.

Description

Technical Field

[0001] The utility model relates to a wind separator, in particular to a wind separator with an adjustable discharging flap. Background Art

[0002] Dry coal preparation is a coal preparation method that uses air instead of water as the separation medium. It has been widely used in the coal industry due to its small footprint, strong adaptability and low requirements for the production environment. As a device for dry coal preparation, the wind separator is mainly used to separate coal and gangue.

[0003] The existing wind separator generally includes a feeding mechanism, a sorting platform connected to the feeding mechanism, and a discharging mechanism connected to the sorting platform; the sorting platform is tilted and equipped with a vibration generating device, and a wind generating device is connected below the sorting platform. The coal blocks and gangue blocks move in the direction of separation by relying on the tilt vibration of the sorting platform and the action of wind. The sorting platform is connected below the discharging mechanism, which includes several discharging ports, so that the coal blocks and gangue blocks are separated and discharged from different discharging ports. Among the several discharging ports, some output clean coal, some output coarse coal (coal containing some gangue), and some output gangue.

[0004] The sizes of the above-mentioned several discharge ports are relatively fixed. If it is to be ensured that there is no gangue mixed in the coal blocks output from the clean coal outlet, only raw materials with fixed gangue content can be processed, and the same air separator cannot be used to sort coal blocks with different gangue contents. Utility Model Content

[0005] In order to solve the above deficiencies in the prior art, the utility model aims to provide a wind separator with an adjustable discharge flap, so as to achieve the purpose of sorting coal blocks with different gangue contents by adjusting the size range of the discharge port.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a wind separator with an adjustable discharging flap, comprising a feeding mechanism, a sorting platform connected to the feeding mechanism, and a discharging mechanism connected to the sorting platform, the discharging mechanism comprising a discharging hopper opened at both ends, the upper end of the discharging hopper facing the sorting platform, one or more discharging flaps for separating the discharging hopper are arranged in the discharging hopper, and there is a gap between the discharging flap and the discharging hopper, a rotating shaft arranged parallel to the discharging flap is fixed at the lower end of the discharging flap, the rotating shaft can rotatably pass through the discharging hopper, and a driving component for driving the rotating shaft to rotate is connected to the rotating shaft, so that the discharging flap is movably arranged in the discharging hopper.

[0007] As a limitation of the present utility model: the driving component includes a rotating rod fixedly mounted on one end of the rotating shaft extending out of the discharging hopper, the rotating rod is parallel to the corresponding outer wall of the discharging hopper, and also includes a positioning rod sliding through the rotating rod; a positioning arc plate adapted to the movement trajectory of the positioning rod is fixedly mounted on the corresponding outer wall of the discharging hopper, and a plurality of positioning circular holes whose connecting lines are adapted to the movement trajectory of the positioning rod are arranged on the positioning arc plate, and the positioning rod is inserted into the positioning circular hole by sliding the positioning rod.

[0008] As a limitation of the present invention: a pull button is fixedly provided at one end of the positioning rod away from the discharge hopper.

[0009] As a limitation of the present invention: a limiting portion having a size larger than the positioning hole and used to abut against the positioning arc plate is fixedly provided at the position of the positioning rod facing the positioning arc plate, and a compression spring is provided between the limiting portion and the rotating rod.

[0010] As a limitation of the present invention: the rotating rod is arranged parallel to the discharging flap.

[0011] As a limitation of the present invention: the driving component includes a worm wheel fixed to the end of the rotating shaft extending out of the hopper, and also includes a worm meshing with the worm wheel, and the end of the worm wheel away from the worm wheel is connected to the motor.

[0012] As a limitation of the present utility model: a sliding shaft parallel to the discharging flap is fixedly arranged on the upper end of the discharging flap, the sliding shaft extends through the discharging hopper, and an arc-shaped sliding groove matching the movement trajectory of the sliding shaft is opened on the corresponding side wall of the discharging hopper.

[0013] As a limitation of the utility model: a positioning arc plate adapted to the movement trajectory of the sliding shaft is fixedly provided on the corresponding outer wall of the discharge hopper, and a positioning long hole adapted to the movement trajectory of the sliding shaft is opened on the positioning arc plate. When the discharge flap is rotated, the sliding shaft moves in the arc-shaped slide groove and the positioning long hole.

[0014] As a limitation to the present utility model: the discharge hopper is larger at the top and smaller at the bottom, and its cross section is an inverted trapezoid, and the discharge flap is arranged along the longitudinal surface of the discharge hopper.

[0015] As a limitation of the present utility model: the discharge hopper is also fixedly provided with one or more discharge partitions arranged along the longitudinal surface thereof, and the discharge partitions and the discharge flaps divide the discharge hopper into a plurality of discharge ports.

[0016] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0017] (1) The utility model divides the discharge hopper by a rotatable discharge flap, and the size of the separated discharge openings is adjustable. When processing raw materials with different gangue contents, the spatial range of clean coal output is large or small. The lower the gangue content, the smaller the width of the discharge opening corresponding to the clean coal output section, and the higher the gangue content, the larger the width of the discharge opening corresponding to the clean coal output end. The position of the discharge flap is adjustable, so that the same discharge hopper can adapt to coal blocks with different gangue contents, thereby improving adaptability and ensuring that there is no gangue mixed in the materials discharged from the clean coal outlet;

[0018] (2) The discharging flap of the utility model can be adjusted manually or electrically, and different flap adjustment methods can be selected according to different needs.

[0019] In summary, the utility model enables the same discharging hopper to adapt to coal blocks with different gangue contents, thereby improving adaptability. Different flap adjustment modes can also be selected according to different needs, and is suitable for separation of coal and gangue. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0022] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0023] Figure 3 This is a three-dimensional structural schematic diagram of another embodiment of the utility model;

[0024] Figure 4 for Figure 3 Enlarged view of part B in the middle.

[0025] In the figure: 1-discharging hopper, 2-discharging flap, 3-discharging partition, 4-rotating shaft, 5-rotating rod, 6-positioning rod, 7-pull button, 8-positioning arc plate, 9-positioning circular hole, 10-limiting part, 11-compression spring, 12-worm gear, 13-worm, 14-motor, 15-sliding shaft, 16-arc slide groove, 17-positioning long hole. DETAILED DESCRIPTION

[0026] The preferred embodiment of the utility model is described below in conjunction with the accompanying drawings. It should be understood that the wind separator with adjustable discharge flap described here is a preferred embodiment, which is only used to illustrate and explain the utility model and does not constitute a limitation of the utility model.

[0027] The directional terms or positional relationships such as "up", "down", "left" and "right" described in the present invention are based on the directional relationships in the drawings of the present invention specification and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the content protected by the present invention.

[0028] Example 1

[0029] In this embodiment, Figure 1 , Figure 2 As shown, a pneumatic separator with an adjustable discharge flap includes a feeding mechanism, a sorting platform connected to the feeding mechanism, and a discharging mechanism connected to the sorting platform. In this embodiment, the feeding mechanism and the sorting platform both use the feeding and sorting parts of the pneumatic separator in the prior art, which are not limited here.

[0030] The discharging mechanism includes a discharging hopper 1 with openings at both ends, the upper end of the discharging hopper 1 faces the sorting platform, and the lower end is open for discharging. The discharging hopper 1 is larger at the top and smaller at the bottom, and its cross section is an inverted trapezoid. A discharging flap 2 is movably provided in the discharging hopper 1, and a discharging partition 3 is also fixed in the discharging hopper 1. The discharging partition 3 and the discharging flap 2 are both arranged along the longitudinal surface of the discharging hopper 1, that is, they are both arranged perpendicular to the two parallel side walls of the discharging hopper 1, and together divide the discharging hopper 1 into a plurality of discharging ports. Since both medium coal and coarse coal are coal mixed with gangue, it is not very meaningful to adjust the partitions of the medium coal outlet and the coarse coal outlet. Therefore, in this embodiment, the movably arranged discharging flap 2 is used in conjunction with the fixedly arranged discharging partition 3. The movably arranged discharging flap 2 is used to separate the clean coal from the medium coal, and the fixedly arranged discharging partition 3 is used to separate the medium coal from the coarse coal. Of course, the number of the discharging partition 3 and the discharging flap 2 can also be adjusted according to actual needs.

[0031] Specifically, the longitudinal dimension of the discharge flap 2 is slightly smaller than the internal dimension of the discharge hopper 1, so that there is a gap between the discharge flap 2 and the discharge hopper 1, which is convenient for the rotation of the discharge flap 2 in the discharge hopper 1. The top of the discharge flap 2 can slightly extend out of the discharge hopper 1 in height, ensuring that the discharge flap 2 is not lower than the discharge hopper 1 when tilted, so as to prevent the material from mixing into other discharge ports. A rotating shaft 4 arranged parallel to the discharge flap 2 is fixed at the lower end of the discharge flap 2, and the rotating shaft 4 can rotatably penetrate the discharge hopper 1, and a driving component for driving the rotating shaft 4 to rotate is connected to the rotating shaft 4, so that the discharge flap 2 is movably arranged in the discharge hopper 1.

[0032] The driving component can be driven manually or electrically. The driving component in this embodiment is driven manually. The driving component includes a rotating rod 5 fixedly arranged on the end of the rotating shaft 4 extending out of the discharge hopper 1. The rotating rod 5 is parallel to the corresponding outer wall of the discharge hopper 1 and is also parallel to the discharge flap 2, so that the rotating rod 5 can reflect the position of the discharge flap 2 to a certain extent. The driving component also includes a positioning rod 6 that slides through the rotating rod 5. The end of the positioning rod 6 away from the discharge hopper 1 is fixed with a pull-out button 7 for easy hand-held operation. When the rotating rod 5 rotates around the rotating shaft 4, since the discharge flap 2 is fixedly connected to the rotating shaft 4, the discharge flap 2 will also flip at the same angle, and the positioning rod 6 will produce an arc-shaped motion trajectory. In order to fix the angle of the discharge flap 2, a positioning arc plate 8 that is adapted to the motion trajectory of the positioning rod 6 is fixedly arranged on the corresponding outer wall of the discharge hopper 1. A plurality of positioning circular holes 9 for inserting the positioning rod 6 are arranged on the positioning arc plate 8, and the connecting line of the plurality of positioning circular holes 9 is adapted to the motion trajectory of the positioning rod 6. By holding the pull button 7 and sliding the positioning rod 6, the positioning rod 6 is inserted into the corresponding positioning circular hole 9, so as to fix the position of the discharging flap 2. Furthermore, in order to prevent the positioning rod 6 from sliding out, a limiting portion 10 is fixedly provided at the position of the positioning rod 6 facing the positioning arc plate 8, which is used to abut against the positioning arc plate 8 and has a size larger than the positioning hole. The limiting portion 10 in this embodiment is a disc fixedly sleeved on the positioning rod 6, and a compression spring 11 is provided between the limiting portion 10 and the rotating rod 5.

[0033] When the angle of the discharge flap 2 needs to be adjusted, the hand-held pull-out button 7 is applied to the side away from the hopper to compress the compression spring 11, and the positioning rod 6 is pulled out from the positioning circular hole 9, and the limit is released. The positioning rod 6 is rotated to a suitable position by the pull-out button 7 as needed, and the force applied to the side away from the hopper on the pull-out button 7 is removed to reset the compression spring 11, and the positioning rod 6 is inserted into the corresponding positioning circular hole 9. At the same time, the limit part 10 abuts against the positioning arc plate 8 to complete the rotation of the discharge flap 2. By rotating the discharge flap 2, the boundary line between the clean coal discharge port and the medium coal discharge port in the discharge hopper 1 can be adjusted, so that the air separator can adapt to coal raw materials with different gangue contents.

[0034] Example 2

[0035] In this embodiment, Figure 3 , Figure 4 As shown, a wind separator with an adjustable discharge flap is shown. The difference between this embodiment and embodiment 1 lies in the driving method of the driving component, that is, the driving component in this embodiment rotates the discharge flap 2 by electric drive.

[0036] Specifically, the driving component in this embodiment includes a worm wheel 12 fixed to the end of the rotating shaft 4 extending out of the discharge hopper 1, and also includes a worm 13 meshing with the worm wheel 12. The end of the worm 13 away from the worm wheel 12 is connected to the motor 14. The motor 14 is fixed on the frame of the air separator. The motor 14 in this embodiment is a servo motor 14. The rotation of the output shaft of the motor 14 drives the worm 13 to rotate, and the worm 13 drives the worm wheel 12 to rotate, thereby driving the rotating shaft 4 to rotate. Since the rotating shaft 4 is fixedly connected to the discharge flap 2, the rotation of the rotating shaft 4 will cause the discharge flap 2 to rotate accordingly. The motor 14 is electrically connected to the control system of the air separator, and the action of the motor 14 is controlled by the control system, thereby realizing automatic control of the flap angle.

[0037] Furthermore, a sliding shaft 15 arranged parallel to the discharging flap 2 is fixedly provided at the upper end of the discharging flap 2, and the sliding shaft 15 extends through the discharging hopper 1, and an arc-shaped slide groove 16 matching the movement trajectory of the sliding shaft 15 is provided on the corresponding side wall of the discharging hopper 1, and a positioning arc plate 8 matching the movement trajectory of the sliding shaft 15 is fixedly provided on the corresponding outer wall of the discharging hopper 1, and a positioning long hole 17 matching the movement trajectory of the sliding shaft 15 is provided on the positioning arc plate 8, so that the sliding shaft 15 extends through the arc-shaped slide groove 16 and the positioning long hole 17, and a limiting portion 10 having a size larger than the width of the positioning long hole 17 is fixedly provided at the extended end, and when the discharging flap 2 is rotated, the sliding shaft 15 moves in the arc-shaped slide groove 16 and the positioning long hole 17. Due to the principle of two points positioning a straight line, the setting of the sliding shaft 15 makes the structure of the discharging flap 2 more stable, and of course, a sliding shaft 15 can be provided at each end of the discharging flap 2 to make the structure more stable.

[0038] When the angle of the discharge flap 2 needs to be adjusted, the control system controls the motor 14 to drive the discharge flap 2 to rotate, thereby realizing automatic control of the angle of the discharge flap 2, and further realizing automatic adjustment of the air separator to adapt to coal raw materials with different gangue contents.

Claims

1. A wind separator with an adjustable discharge flap, comprising a feeding mechanism, a sorting platform connected to the feeding mechanism, and a discharging mechanism connected to the sorting platform, wherein the discharging mechanism comprises a discharging hopper with upper and lower ends opened, and the upper end of the discharging hopper faces the sorting platform, and is characterized in that: The discharging hopper is provided with one or more discharging flaps for separating the discharging hopper, and there is a gap between the discharging flap and the discharging hopper. A rotating shaft parallel to the discharging flap is fixed at the lower end of the discharging flap. The rotating shaft can rotatably pass through the discharging hopper, and a driving component for driving the rotating shaft to rotate is connected to the rotating shaft, so that the discharging flap is movably arranged in the discharging hopper.

2. The winnowing machine with adjustable discharge flap according to claim 1, characterized in that: The driving component includes a rotating rod fixedly arranged on one end of the rotating shaft extending out of the discharging hopper, the rotating rod is parallel to the corresponding outer wall of the discharging hopper, and also includes a positioning rod sliding through the rotating rod; a positioning arc plate adapted to the movement trajectory of the positioning rod is fixedly arranged on the corresponding outer wall of the discharging hopper, and a plurality of positioning circular holes whose connecting lines are adapted to the movement trajectory of the positioning rod are arranged on the positioning arc plate, and the positioning rod is inserted into the positioning circular hole by sliding the positioning rod.

3. The winnowing machine with adjustable discharge flap according to claim 2, characterized in that: A pull button is fixedly arranged at one end of the positioning rod away from the discharging hopper.

4. The winnowing machine with adjustable discharge flap according to claim 3, characterized in that: A limiting portion which is larger than the positioning hole and is used to abut against the positioning arc plate is fixedly arranged at the position of the positioning rod facing the positioning arc plate, and a compression spring is arranged between the limiting portion and the rotating rod.

5. The winnowing machine with adjustable discharge flap according to claim 4, characterized in that: The rotating rod is arranged parallel to the discharging flap.

6. The winnowing machine with adjustable discharge flap according to claim 1, characterized in that: The driving component comprises a worm wheel fixedly arranged at one end of the rotating shaft extending out of the hopper, and also comprises a worm screw meshing with the worm wheel, wherein one end of the worm screw away from the worm wheel is connected to the motor.

7. The winnowing machine with adjustable discharge flap according to claim 6, characterized in that: A sliding shaft parallel to the discharging flap is fixedly arranged on the upper end of the discharging flap, the sliding shaft extends through the discharging hopper, and an arc-shaped sliding groove matching the movement track of the sliding shaft is opened on the corresponding side wall of the discharging hopper.

8. The winnowing machine with adjustable discharge flap according to claim 7, characterized in that: A positioning arc plate matching the movement track of the sliding shaft is fixed on the corresponding outer wall of the discharge hopper, and a positioning long hole matching the movement track of the sliding shaft is opened on the positioning arc plate. When the discharge flap is rotated, the sliding shaft moves in the arc chute and the positioning long hole.

9. A winnowing machine with an adjustable discharge flap according to any one of claims 1 to 8, characterized in that: The discharge hopper is larger at the top and smaller at the bottom, and its cross section is an inverted trapezoid. The discharge flap is arranged along the longitudinal surface of the discharge hopper.

10. The winnowing machine with adjustable discharge flap according to claim 9, characterized in that: The discharge hopper is also fixedly provided with one or more discharge partitions arranged along the longitudinal surface thereof, and the discharge partitions and the discharge flaps divide the discharge hopper into a plurality of discharge ports.

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