Screening basket structure based on coal slime centrifugal dehydrator

Abstract

The utility model discloses a sieve basket structure based on a coal slime centrifugal dehydrator, which comprises a rack, a barrel is rotatably connected onto the rack, the barrel is in transmission connection with a driving mechanism, a floating sieve basket component is coaxially mounted in the barrel, a sieve basket vibration component is arranged above the floating sieve basket component, and the floating sieve basket component and the sieve basket vibration component are coaxially mounted in the barrel. The screen basket vibration assembly drives the floating screen basket assembly to vibrate up and down; the centrifugal dehydrator sieve basket has the advantages that the sieve basket of a fixed connecting structure is designed into an elastic floating type connecting structure, and the special sieve basket vibration assembly is designed, so that the centrifugal dehydrator sieve basket has the function of vibrating up and down while rotating at a high speed, coal slime adhering to the inner wall of the sieve basket falls off in time, and the service life of the centrifugal dehydrator sieve basket is prolonged. The dehydration efficiency of the centrifugal dehydrator is improved, the coal slime treatment capacity in unit time is remarkably improved, and the centrifugal dehydrator is worthy of wide-range popularization and application.

Description

Technical field:

[0001] The utility model relates to the technical field of centrifugal dehydrators, in particular to a screen basket structure based on a coal slime centrifugal dehydrator. Background technology:

[0002] Coal washing is a process of separating raw coal of different components and specific gravities into different grades through the impact of water flow, removing dust and waste rock, and reducing ash and sulfur content; the clean coal slime after coal washing is usually dehydrated using a centrifugal dehydrator; the general structure of a vertical centrifugal dehydrator includes a cylinder and a screen basket. When in use, the coal slime enters the high-speed rotating screen basket, the water is thrown out, and the coal slime remains on the inner wall of the screen basket. In actual use, a common disadvantage of a vertical centrifugal dehydrator is that the coal slime processing capacity per unit time is low, and multiple centrifugal dehydrators need to be arranged to meet production needs. The main reason for the low coal slime processing capacity is that if the coal slime feed amount is large, the coal slime adheres to the inner wall of the screen basket and is not easy to fall off. It only starts to fall off when it accumulates to a certain thickness, which easily blocks some screen holes, resulting in poor dehydration effect and low coal slime processing capacity. Utility model content:

[0003] The purpose of the utility model is to provide a screen basket structure based on a coal slime centrifugal dehydrator to solve the technical problem in the prior art that the coal slime adhering to the inner wall of the screen basket cannot fall off in time, resulting in a small coal slime processing capacity of the coal slime centrifugal dehydrator.

[0004] The content of the utility model: A screen basket structure based on a coal slime centrifugal dehydrator includes a frame, a cylinder is rotatably connected to the frame, the cylinder is transmission-connected to a driving mechanism, a floating screen basket assembly is coaxially installed in the cylinder, a screen basket vibration assembly is provided above the floating screen basket assembly, and the screen basket vibration assembly drives the floating screen basket assembly to vibrate up and down.

[0005] Furthermore, the floating screen basket assembly includes a cylindrical screen basket, on which a limit ring is fixedly mounted, a plurality of positioning holes are provided on the limit ring, and positioning pins matching the positioning holes are installed on the inner wall of the cylinder, the positioning pins are slidably inserted into the positioning holes, and a compression spring is mounted on the positioning pin, and the compression spring provides an upward elastic force to the limit ring.

[0006] Furthermore, the screen basket vibration assembly includes a plug-in board connected to the top of the frame, a top column is vertically installed on the plug-in board, a retaining edge is fixedly connected to the top of the screen basket, a plurality of protrusions are installed on the retaining edge, and the bottom end of the top column is in contact with the retaining edge.

[0007] Furthermore, a sliding groove is provided on the frame, the plug-in board is slidably inserted in the sliding groove, a top screw hole is provided on the frame, a top screw is screwed in the top screw hole, and the top screw fastens the plug-in board.

[0008] Furthermore, the bottom end of the top column is hemispherical, and the top column is made of high manganese steel.

[0009] Furthermore, the driving mechanism includes a ring gear, a gear shaft and a motor, the ring gear is fixedly sleeved on the cylinder, the ring gear is engaged with the gear shaft, the gear shaft is rotatably mounted on the frame, and the gear shaft is transmission-connected to the motor.

[0010] The beneficial effects of the utility model are as follows: the utility model designs the screen basket of the fixed connection structure into an elastic floating connection structure, and designs a special screen basket vibration component, so that the screen basket of the centrifugal dehydrator can vibrate up and down while rotating at high speed, so that the coal slime adhering to the inner wall of the screen basket can fall off in time, thereby improving the dehydration efficiency of the centrifugal dehydrator, and significantly increasing the coal slime processing capacity per unit time, which is worthy of large-scale promotion and use. Description of the drawings:

[0011] Figure 1 It is a three-dimensional diagram of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Figure 3 for Figure 2 Schematic diagram of the enlarged structure;

[0014] Figure 4 is a perspective view of a floating screen basket assembly;

[0015] In the figure, the frame 1, the cylinder 2, the screen basket 3, the ring gear 4, the gear shaft 5, the limit ring 6, the positioning hole 7, the positioning pin 8, the compression spring 9, the plug-in plate 10, the top screw 11, the top column 12, the retaining edge 13, the protrusion 14, and the receiving tray 15. Specific implementation method:

[0016] like Figure 1 and Figure 2 As shown, the screen basket structure based on the coal slime centrifugal dehydrator includes a frame 1, a cylinder 2 is rotatably connected to the frame 1, the cylinder 2 is transmission-connected to the driving mechanism, a floating screen basket assembly is coaxially installed in the cylinder 2, and a screen basket vibration assembly is arranged above the floating screen basket assembly, and the screen basket vibration assembly drives the floating screen basket assembly to vibrate up and down.

[0017] like Figure 3 and Figure 4As shown, the floating screen basket assembly includes a cylindrical screen basket 3, on which a limit ring 6 is fixedly mounted, and a plurality of positioning holes 7 are provided on the limit ring 6. Positioning pins 8 matching the positioning holes 7 are installed on the inner wall of the cylinder 2, and the positioning pins 8 are slidably inserted into the positioning holes 7 (not all positioning holes 7 are inserted with positioning pins 8, and some positioning holes 7 are used for water circulation). A compression spring 9 is mounted on the positioning pin 8, and the compression spring 9 provides an upward elastic force to the limit ring 6.

[0018] like Figure 1 and Figure 2 As shown, the screen basket vibration assembly includes a plug-in plate 10 connected to the top of the frame 1, a top column 12 is vertically installed on the plug-in plate 10, a retaining edge 13 is fixedly connected to the top of the screen basket 3, and a plurality of protrusions 14 are installed on the retaining edge 13. The protrusion 14 is designed to be arc-shaped, and the edge of the protrusion 14 smoothly transitions to the retaining edge 13, and the bottom end of the top column 12 contacts the retaining edge 13; in order to facilitate the disassembly or replacement of the screen basket 3, a sliding groove is provided on the frame 1, and the plug-in plate 10 is slidably inserted in the sliding groove, and a top screw through hole is provided on the frame 1, and a top screw 11 is screwed in the top screw through hole, and the top screw 11 fastens the plug-in plate 10; the bottom end of the top column 12 is hemispherical, and the top column 12 is made of high manganese steel, which has better wear resistance.

[0019] like Figure 1 As shown, the driving mechanism includes a ring gear 4, a gear shaft 5 and a motor. The ring gear 4 is fixedly mounted on the cylinder 2, the ring gear 4 is meshed with the gear shaft 5, the gear shaft 5 is rotatably mounted on the frame 1, and the gear shaft 5 is transmission-connected to the motor.

[0020] During specific operation, the driving mechanism drives the cylinder 2 and the screen basket 3 to rotate at high speed. The coal slime to be dehydrated first falls onto the receiving tray 15. Due to the action of centrifugal force, the coal slime to be dehydrated is thrown to the inner wall of the screen basket 3, and the water passes through the sieve holes of the screen basket 3 and is separated. The dehydrated coal slime remains on the inner wall of the screen basket 3. During the operation of the equipment, the protrusion 14 will periodically meet the top column 12. At this time, the screen basket 3 is pressed down by the top column 12 and moves downward, causing the screen basket 3 to vibrate up and down periodically, thereby shaking off the coal slime adhering to the inner wall of the screen basket 3 in time, reducing the sieve hole blockage rate, and improving the dehydration efficiency of the equipment.

[0021] The above are only preferred examples of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A screen basket structure based on a coal slime centrifugal dehydrator, comprising a frame (1), a cylinder (2) rotatably connected to the frame (1), and the cylinder (2) being transmission-connected to a driving mechanism, characterized in that: A floating screen basket assembly is coaxially installed in the cylinder (2), and a screen basket vibration assembly is arranged above the floating screen basket assembly, and the screen basket vibration assembly drives the floating screen basket assembly to vibrate up and down; the floating screen basket assembly includes a cylindrical screen basket (3), a limiting ring (6) is fixedly mounted on the screen basket (3), a plurality of positioning holes (7) are opened on the limiting ring (6), and a positioning pin (8) matching the positioning hole (7) is installed on the inner wall of the cylinder (2), and the positioning pin (8) is slidably inserted in the cylinder (2). A compression spring (9) is mounted on the positioning pin (8) in the positioning hole (7), and the compression spring (9) provides an upward elastic force to the limiting ring (6); the screen basket vibration assembly includes a plug-in board (10) connected to the top of the frame (1), a top column (12) is vertically mounted on the plug-in board (10), a retaining edge (13) is fixedly connected to the top of the screen basket (3), a plurality of protrusions (14) are mounted on the retaining edge (13), and the bottom end of the top column (12) is in contact with the retaining edge (13).

2. The screen basket structure based on the coal slime centrifugal dehydrator according to claim 1, characterized in that: A sliding slot is provided on the frame (1), and the plug-in board (10) is slidably inserted in the sliding slot. A top screw through hole is provided on the frame (1), and a top screw (11) is screwed into the top screw through hole. The top screw (11) fastens the plug-in board (10).

3. The screen basket structure based on the coal slime centrifugal dehydrator according to claim 2, characterized in that: The bottom end of the top column (12) is hemispherical, and the top column (12) is made of high manganese steel.

4. The screen basket structure based on the coal slime centrifugal dehydrator according to any one of claims 1 to 3, characterized in that: The driving mechanism comprises a ring gear (4), a gear shaft (5) and a motor; the ring gear (4) is fixedly sleeved on the cylinder (2); the ring gear (4) is meshed with the gear shaft (5); the gear shaft (5) is rotatably mounted on the frame (1); and the gear shaft (5) is transmission-connected to the motor.

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