A high efficiency circular screen

Abstract

The present invention discloses a high-efficiency circumferential screen, including a bottom plate, wherein the bottom plate is provided with a support seat, wherein one of the support seats is provided with a connecting ring, and the other support seat is installed with a bearing seat, wherein the connecting ring and the bearing seat are provided with a rotatable main shaft, and the main shaft is provided with a screen body; the main shaft is provided with a spiral groove; the bottom plate is also provided with a motor, wherein the motor is provided with a drive disk, and the drive disk is provided with a connecting rod, and the connecting rod is connected to the main shaft through a twister. The present invention utilizes the spiral groove on the main shaft to enable the screen to produce axial screening and circumferential screening, thereby forming screening in multiple directions, thereby greatly improving the screening efficiency; at the same time, the spiral spring in the twister correspondingly produces axial compression and circumferential expansion and contraction during the movement of the screen, thereby producing elastic buffer changes, further promoting the movement of the screen, and at the same time, a buffer zone is generated between the connecting rod and the main shaft, thereby improving the connectivity between the two.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, and in particular to a high-efficiency circumferential screen. Background Art

[0002] Most existing vibrating screens vibrate in one direction or in the X and Y directions, resulting in low screening efficiency, which causes repeated operation of qualified materials or over-crushing of dissociated minerals, affecting the recovery of useful products, reducing equipment utilization, and indirectly increasing operating costs. At the same time, different levels of screening are required in the traditional screening process, and the replacement of the screen plate is also very troublesome. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a high-efficiency circumferential screen, change the traditional screening working mode, and further improve the screening efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a high-efficiency circumferential screen, comprising a bottom plate, wherein two supporting seats are symmetrically arranged on the bottom plate, wherein a connecting ring is fixedly arranged on one of the supporting seats, and a bearing seat is installed on the other supporting seat, a rotatable main shaft is arranged on the connecting ring and the bearing seat, a screen body is fixedly arranged on the main shaft, and the screen body is located between the two supporting seats; the main shaft is provided with a plurality of spiral grooves uniformly distributed along the circumferential direction at the position of the connecting ring, and a cylindrical platform corresponding to the spiral groove is arranged on the corresponding connecting ring, and the cylindrical platform is slidably arranged in the spiral groove; a motor is also fixedly arranged on the bottom plate, a driving disk is arranged on the motor, a rotatable connecting rod is arranged on the driving disk, and the connecting rod is connected to the main shaft through a twister;

[0006] The number of turns of the spiral line corresponding to the spiral groove is less than one turn, the axis of the spiral line corresponding to the spiral groove coincides with the axis of the main shaft, the arc formed by the projection of the spiral line corresponding to the spiral groove toward the axis of the main shaft is a minor arc, and the pitch of the spiral line corresponding to the spiral groove is greater than the outer diameter of the main shaft;

[0007] The twister includes a cylindrical shell and a coil spring, the connecting rod is hinged to the shell, one end of the coil spring is fixedly arranged in the shell, and the other end of the coil spring is fixedly nested in the end of the main shaft, and the corresponding shell is provided with a through hole for the main shaft to pass through; the spiral wire corresponding to the coil spring is a conical spiral wire, and the cross-section of the coil spring is a rectangle, and the length of the rectangle is greater than the pitch of the spiral wire corresponding to the coil spring.

[0008] Preferably, the screen body includes a cylindrical screen and a fixed plate fixedly arranged at both ends of the screen, the fixed plate is nested on the main shaft, a plurality of locking bolts are arranged on the fixed plate, and a feeding port is provided on the fixed plate; half of the screen is provided with a plurality of evenly distributed first screen holes, and the other half of the screen is provided with a plurality of evenly distributed second screen holes, and the inner diameter of the first screen hole is smaller than the inner diameter of the second screen hole.

[0009] Preferably, the number of the spiral grooves is four.

[0010] Preferably, a limiting seat is fixedly provided on the bottom plate, and a limiting groove for the connecting rod to slide is formed on the limiting seat.

[0011] Preferably, a linear bearing is provided on the bearing seat, and the linear bearing is nested on the main shaft.

[0012] The beneficial effects of the present invention are as follows: the present invention utilizes the spiral groove on the main shaft so that the main shaft can generate two kinds of movements, axial and circumferential, driven by the motor, and finally enables the screen to generate axial screening and circumferential screening, forming screening in multiple directions, thereby greatly improving the screening efficiency; at the same time, the spiral spring in the twister generates axial compression and circumferential expansion and contraction correspondingly during the movement of the screen, generating elastic buffering changes, further promoting the movement of the screen, and at the same time generating a buffer zone between the connecting rod and the main shaft, thereby improving the connectivity between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of a high-efficiency circumferential screen provided by an embodiment of the present invention;

[0015] Figure 2 It is the structural schematic diagram of the screen drum;

[0016] Figure 3 The structural diagram of the main axis;

[0017] Figure 4 is a schematic diagram of the structure of the twister;

[0018] Figure 5 It is a schematic diagram of the structure of the coil spring;

[0019] Figure 6The arc formed by the projection of the spiral groove toward the axis of the main shaft;

[0020] Figure 7 is the cross section and helix of the coil spring.

[0021] Explanation of the accompanying drawings: 1-base plate, 11-support seat, 12-limit seat, 13-motor, 131-drive disk, 132-connecting rod, 2-main shaft, 21-spiral groove, 3-screen body, 31-screen, 32-fixing plate, 321-locking bolt, 322-feeding port, 4-torsioner, 41-shell, 42-helical spring, 5-connecting ring, 6-bearing seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Figures 1 to 7 As shown, a high-efficiency circumferential screen comprises a bottom plate 1, on which two support seats 11 are symmetrically arranged, wherein a connecting ring 5 is fixedly arranged on one of the support seats 11, and a bearing seat 6 is installed on the other support seat 11, a rotatable main shaft 2 is arranged on the connecting ring 5 and the bearing seat 6, a screen body 3 is fixedly arranged on the main shaft 2, and the screen body 3 is located between the two support seats 11; the main shaft 2 is provided with four spiral grooves 21 evenly distributed along the circumferential direction at the position of the connecting ring 5, and the corresponding connecting ring 5 is provided with a cylindrical table corresponding to the spiral grooves 21 one by one, and the cylindrical table is slidably arranged in the spiral groove 21; a motor 13 is also fixedly arranged on the bottom plate 1, and a driving disk 131 is arranged on the motor 13, and a rotatable connecting rod 132 is arranged on the driving disk 131, and the connecting rod 132 is connected to the main shaft 2 through a twister 4;

[0024] The number of turns of the spiral line corresponding to the spiral groove 21 is less than one turn, the axis of the spiral line corresponding to the spiral groove 21 coincides with the axis of the main shaft 2, the arc formed by the projection of the spiral line corresponding to the spiral groove 21 toward the axis of the main shaft 2 is a minor arc, and the pitch of the spiral line corresponding to the spiral groove 21 is greater than the outer diameter of the main shaft 2. Figure 6As shown; wherein the number of turns determines the size of the central angle corresponding to the projected arc. This setting of the spiral groove 21 makes the spiral of the spiral groove 21 tend to be controlled. By reasonably setting the number of turns and the pitch, the spiral of the spiral groove 21 can be made to be gentle, thereby avoiding the main shaft 2 from generating a large axial resistance when rotating. In the actual setting, when the number of turns is determined, increasing the pitch can make the spiral groove 21 closer to a straight line. When the pitch is determined, reducing the number of turns can make the spiral groove 21 closer to a straight line. In this embodiment, we can give a set of specific parameters: the number of turns is 0.3 turns, the pitch is 280, the outer diameter of the main shaft is 40, and the unit is not specified here.

[0025] The twister 4 includes a cylindrical shell 41 and a coil spring 42, the connecting rod 132 is hinged to the shell 41, one end of the coil spring 42 is fixedly arranged in the shell 41, and the other end of the coil spring 42 is fixedly nested in the end of the main shaft 2, and the shell 41 is provided with a through hole for the main shaft 2 to pass through; the spiral line corresponding to the coil spring 42 is a conical spiral line, and the cross-section of the coil spring 42 is a rectangle, the length of which is greater than the pitch of the spiral line corresponding to the coil spring 42, as shown in FIG. Figure 7 As shown in the figure, the rectangle shown in the figure is the cross section of the coil spring 42, that is, the coil spring 42 is based on the rectangle. Figure 7 The spiral spring 42 is formed by scanning along the path of the spiral line in the spiral spring; the arrangement of the spiral spring 42 forms a plate-like structure, and its projection in the axial direction forms a structure similar to a spring, so that it has energy storage in the circumferential direction, and it also has the energy storage in the axial direction of a common spring, and finally the spiral spring 42 has energy storage buffer in both the circumferential and axial directions, and the length of the cross section is greater than its pitch, so that the projection of the spiral spring 42 in the radial direction produces an overlapping area (such as Figure 4 It can be seen that overlap occurs), thereby avoiding the phenomenon of traditional cylindrical springs colliding and misaligning when compressed.

[0026] Furthermore, the sieve body 3 includes a cylindrical sieve 31 and a fixing plate 32 fixedly arranged at both ends of the sieve 31, the fixing plate 32 is nested on the main shaft 2, a plurality of locking bolts 321 are arranged on the fixing plate 32, a feeding port 322 is provided on the fixing plate 32, and a cover plate is installed on the feeding port 322; a plurality of evenly distributed first sieve holes are provided on one half of the sieve 31, and a plurality of evenly distributed second sieve holes are provided on the other half of the sieve 32, and the inner diameter of the first sieve holes is smaller than the inner diameter of the second sieve holes; due to the structural characteristics of the spiral groove 21, the parameters of the spiral groove 21 can be controlled to obtain different rotation angle ranges of the main shaft 2, and by utilizing the structural characteristics of the spiral groove 21, the rotation range of the main shaft 2 will not exceed 180 degrees, so at least two different sieve holes can be set on the sieve 31 to perform multi-stage screening, thereby avoiding the trouble of replacing the sieve 31 and greatly improving the screening efficiency.

[0027] Embodiment 2: On the basis of Embodiment 1, a limit seat 12 is further fixedly provided on the base plate 1, and a limit groove is provided on the limit seat 12 for the connecting rod 132 to slide. In Embodiment 1, the circumferential rotation (i.e., rotation) of the connecting rod 132 is limited by the driving disk 131. In this embodiment, the circumferential rotation of the connecting rod 132 can be further limited by the limit seat 12.

[0028] Furthermore, in Embodiment 1 and Embodiment 2, a linear bearing is provided on the bearing seat 6 , and the linear bearing is nested on the main shaft 2 to realize the rotation and linear motion of the main shaft 2 .

[0029] When in use, first adjust the position of the screen 31, select the screen hole to be used by locking bolt 321, then place the material through feeding port 322, and finally start motor 13 to perform screening. During operation, connecting rod 132 drives main shaft 2 to move linearly, while spiral groove 21 on main shaft 2 drives main shaft 2 to rotate circumferentially, thereby generating two modes of movement, and finally making screen 31 produce axial screening and circumferential screening, forming screening in multiple directions, thereby greatly improving screening efficiency. At the same time, the spiral spring 42 in twister 4 produces axial compression and circumferential expansion and contraction in the movement of screen 31, generating elastic buffering changes, further promoting the movement of screen 31, and at the same time generating a buffer zone between connecting rod 132 and main shaft 2, thereby improving the connectivity between the two.

[0030] The present invention utilizes the spiral groove on the main shaft so that the main shaft can generate two kinds of movements, axial and circumferential, under the drive of the motor, ultimately causing the screen to produce axial screening and circumferential screening, forming screening in multiple directions, thereby greatly improving the screening efficiency; at the same time, the spiral spring in the twister correspondingly produces axial compression and circumferential expansion and contraction during the movement of the screen, producing elastic buffering changes, further promoting the movement of the screen, and at the same time creating a buffer zone between the connecting rod and the main shaft, thereby improving the connectivity between the two.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-efficiency circumferential screen, characterized in that: The invention comprises a bottom plate (1), two support seats (11) are symmetrically arranged on the bottom plate (1), a connecting ring (5) is fixedly arranged on one of the support seats (11), a bearing seat (6) is installed on the other support seat (11), a rotatable main shaft (2) is arranged on the connecting ring (5) and the bearing seat (6), a screen body (3) is fixedly arranged on the main shaft (2), and the screen body (3) is located between the two support seats (11); the main shaft (2) is located at the position of the connecting ring (5) A plurality of spiral grooves (21) uniformly distributed along the circumferential direction are provided, and a cylindrical platform corresponding to the spiral grooves (21) is provided on the corresponding connecting ring (5), and the cylindrical platform is slidably arranged in the spiral groove (21); a motor (13) is also fixedly arranged on the bottom plate (1), a driving disk (131) is provided on the motor (13), and a rotatable connecting rod (132) is provided on the driving disk (131), and the connecting rod (132) is connected to the main shaft (2) through a twister (4); The number of turns of the spiral line corresponding to the spiral groove (21) is less than one turn, the axis of the spiral line corresponding to the spiral groove (21) coincides with the axis of the main shaft (2), the arc formed by the projection of the spiral line corresponding to the spiral groove (21) toward the axis of the main shaft (2) is a minor arc, and the pitch of the spiral line corresponding to the spiral groove (21) is greater than the outer diameter of the main shaft (2); The twister (4) comprises a cylindrical shell (41) and a coil spring (42); the connecting rod (132) is hinged to the shell (41); one end of the coil spring (42) is fixedly arranged in the shell (41); the other end of the coil spring (42) is fixedly nested in the end of the main shaft (2); and a through hole for the main shaft (2) to pass through is provided on the corresponding shell (41); the spiral line corresponding to the coil spring (42) is a conical spiral line; the cross section of the coil spring (42) is a rectangle; the length of the rectangle is greater than the pitch of the spiral line corresponding to the coil spring (42); The screen body (3) comprises a cylindrical screen (31) and fixed plates (32) fixedly arranged at both ends of the screen (31), wherein the fixed plates (32) are nested on the main shaft (2), and a plurality of locking bolts (321) are arranged on the fixed plates (32), and a feeding port (322) is provided on the fixed plates (32); a plurality of evenly distributed first screen holes are provided on one half of the screen (31), and a plurality of evenly distributed second screen holes are provided on the other half of the screen (31), wherein the inner diameter of the first screen hole is smaller than the inner diameter of the second screen hole; and the number of the spiral grooves (21) is four.

2. A high-efficiency circumferential screen as claimed in claim 1, characterized in that: A limiting seat (12) is also fixedly arranged on the bottom plate (1), and a limiting groove for the connecting rod (132) to slide is provided on the limiting seat (12).

3. A high-efficiency circumferential screen as claimed in claim 1, characterized in that: A linear bearing is arranged on the bearing seat (6), and the linear bearing is nested on the main shaft (2).

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