Novel sieve core structure of complex frequency sieve

Abstract

The utility model discloses a novel complex frequency screen core structure which comprises two transmission shafts rotationally connected between two side walls of a screen frame, eccentric blocks are arranged on the transmission shafts, the front ends and the rear ends of the two side walls of the screen frame are movably connected with first connecting rods through horizontal rotating shafts, and the tail ends of the first connecting rods are connected with eccentric cams B; the starting ends of the first connecting rods are movably connected with second connecting rods, a horizontally-arranged transmission rod is connected between the first connecting rods on the two sides, and an eccentric cam A capable of colliding with the eccentric cam B is arranged at the position, corresponding to the eccentric cam B, of the transmission shaft; sliding rail bases are fixedly arranged at the positions, located at the ends of the transmission rod, of the two side walls of the screen frame, the two ends of the transmission rod penetrate through the sliding rail bases on the two sides, and the transmission rod can slide in the arrangement direction of the sliding rail bases. The vibrating screen has the advantages that the vibrating screening effect is good, the vibrating screening efficiency is high, the problem that holes are blocked by the screen plate is effectively solved, the structure is simple, and operation is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of multiple frequency screens, in particular to a novel multiple frequency screen core structure. Background Art

[0002] Multiple-frequency screens can be used to screen metal, stone, construction waste, sticky and wet materials, and have advantages unmatched by other screen grades, including static sealing, screen plate vibration, and non-vibration of the screen box. Multiple-frequency screens change the structure of the traditional screen where the screen surface and the screen box vibrate together, adopting a motion mode in which multiple sections of the screen surface vibrate while the screen box and frame do not vibrate. Multiple sections of the screen surface vibrate independently from the feed inlet to the discharge end. Patent publication number CN219560412U discloses a multiple-frequency hot screening device. The screen plate mainly uses an exciter as a vibration source to screen materials. However, for materials with fine particles, high viscosity, and high moisture content, the screen plate is prone to clogging, resulting in low screening efficiency of the vibrating screen. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a new type of multi-frequency screen core structure, which has good vibration screening effect, high vibration screening efficiency, and effectively solves the problem of screen plate blockage. It has a simple structure, stable and reliable operation, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of multi-frequency screen core structure, comprising two transmission shafts rotatably connected between two side walls of the screen frame, and a driving motor for driving the transmission shaft to rotate is provided on one side wall of the screen frame, and eccentric blocks are provided on the transmission shaft, and the front and rear ends of the two side walls of the screen frame are movably connected with a connecting rod 1 through a horizontal rotating shaft, the end of the connecting rod 1 is connected with an eccentric cam B, and the starting end of the connecting rod 1 is movably connected with a connecting rod 2, a horizontally arranged transmission rod is connected between the connecting rods on both sides, and an eccentric cam A that can collide with the eccentric cam B is provided on the transmission shaft at a position corresponding to the eccentric cam B; slide rail bases are fixedly provided at the positions of the transmission rod ends on the two side walls of the screen frame, the two ends of the transmission rod pass through the slide rail bases on both sides, and the transmission rod at the positions corresponding to the slide rail bases is connected with pulleys, and the pulleys can slide along the setting direction of the slide rail base; a screen plate is provided above the transmission rod, and the transmission rod is fixedly connected to the screen plate through a connecting plate.

[0005] Furthermore, the transmission shafts at the front and rear ends rotate synchronously and in the same direction, the eccentric cams A of the transmission shafts at the front and rear ends are set at the same angle, and the connecting rods at the front and rear ends are symmetrically set.

[0006] Furthermore, a transmission shaft protective tube is fixedly provided on the periphery of the transmission shaft between the two side walls of the screen frame, a fixing seat is fixed on the transmission shaft protective tube, and a slide rail base is provided on the fixing seat, and the transmission rod passes through the slide rail base on the fixing seat.

[0007] Furthermore, the slide rail base includes a support seat fixed on the side wall of the screen frame, a guide seat is fixed on the top of the support seat, the guide seat is a horizontally arranged square tube structure, and a linear slide rail adapted to the pulley is provided inside the guide seat.

[0008] Furthermore, a horizontally arranged limiting hole is opened on the side wall of the guide seat at the position corresponding to the transmission rod. The limiting hole is an oblong hole structure, and the ends of the transmission rod pass through the limiting hole.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the new type of multi-frequency screen core structure drives the transmission shaft to rotate through the driving motor, and the transmission shafts at the front and rear ends rotate synchronously and in the same direction, and the exciting force generated by the eccentric block on the transmission shaft causes the screen frame and the screen plate to vibrate; at the same time, the eccentric cam A on the transmission shaft at the front and rear ends collides with the eccentric cam B on the connecting rod at the front and rear ends to cause the screen plate to perform reciprocating linear motion, so the vibration screening effect is good, the vibration screening efficiency is high, and the problem of screen plate blockage is effectively solved. The structure is simple and the operation is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the utility model;

[0011] Figure 2 for Figure 1 Partial enlarged view;

[0012] Figure 3 This is a side view of the eccentric cam A inside the screen frame of the utility model;

[0013] Figure 4 for Figure 3 Partial enlarged view;

[0014] Figure 5 This is a schematic diagram of the slide rail base structure of the utility model.

[0015] In the figure: 1. Screen frame; 2. Drive shaft; 21. Eccentric block; 22. Eccentric cam A; 3. Horizontal rotating shaft; 4. Connecting rod 1; 41. Eccentric cam B; 5. Connecting rod 2; 6. Drive rod; 61. Pulley; 7. Slide rail base; 71. Support seat; 72. Guide seat; 73. Limit hole; 74. Linear guide rail; 8. Screen plate; 9. Connecting plate; 10. Drive shaft protective tube; 11. Fixed seat; 12. Drive motor. DETAILED DESCRIPTION

[0016] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention. Example

[0017] See also Figure 1-5 The utility model provides a technical solution: a novel multi-frequency screen core structure, comprising two transmission shafts 3 rotatably connected between the two side walls of the screen frame 1, and a driving motor 12 for driving the transmission shaft 3 to rotate is provided on one side wall of the screen frame 1, and an eccentric block 21 is provided on the transmission shaft 3. The front and rear ends of the two side walls of the screen frame 1 are movably connected to a connecting rod 1 4 through a horizontal rotating shaft 3, the end of the connecting rod 1 4 is connected to an eccentric cam B41, and the starting end of the connecting rod 1 4 is movably connected to a connecting rod 2 5, a horizontally arranged transmission rod 6 is connected between the connecting rods 1 4 on both sides, and an eccentric cam A22 that can collide with the eccentric cam B41 is provided on the transmission shaft 3 at a position corresponding to the eccentric cam B41;

[0018] On both side walls of the screen frame 1, slide rail bases 7 are fixed at the ends of the transmission rod 6. Both ends of the transmission rod 6 pass through the slide rail bases 7 on both sides, and the positions of the transmission rod 6 corresponding to the slide rail bases 7 are connected to pulleys 61, which can slide along the setting direction of the slide rail bases 7; the slide rail base 7 includes a support seat 71 fixed to the side wall of the screen frame 1, and a guide seat 72 is fixed at the top of the support seat 71. The guide seat 72 is a horizontally arranged square tube structure, and a linear slide rail 74 adapted to the pulley 61 is provided inside the guide seat 72;

[0019] A screen plate 8 is provided above the transmission rod 6, and the transmission rod 6 is fixedly connected to the screen plate 8 through a connecting plate 9; the transmission shafts 2 at the front and rear ends rotate synchronously and in the same direction of rotation, the eccentric cams A22 of the transmission shafts 2 at the front and rear ends are set at the same angle, and the connecting rods 4 at the front and rear ends are symmetrically arranged.

[0020] Working principle:

[0021] The drive shaft 2 is driven to rotate by the drive motor 12, and the drive shafts 2 at the front and rear ends rotate synchronously and in the same direction of rotation. The exciting force generated by the eccentric block 21 on the drive shaft 2 causes the screen frame 1 and the screen plate 8 to vibrate; at the same time, the drive shaft 2 drives the eccentric cam A22 to rotate. When the eccentric cam A22 on the rear end drive shaft 2 collides with the edge of the eccentric cam B41 on the corresponding side, the connecting rod 1 4 at the rear end rotates counterclockwise around the horizontal rotation axis 3. When the connecting rod 1 4 rotates counterclockwise, it drives the connecting rod 2 5 to push the drive rod 6 and the screen plate 8 at the rear end to move horizontally toward the front side; when the eccentric cam A22 on the front end drive shaft 2 collides with the edge of the eccentric cam B41 on the corresponding side, the connecting rod 1 4 at the front end rotates counterclockwise around the horizontal rotation axis 3, causing the drive rod 6 and the screen plate 8 at the front end to move horizontally toward the rear side, causing the screen plate 8 to perform reciprocating linear motion, thereby realizing multi-frequency vibration screening of the material on the screen plate 8.

[0022] Furthermore, a transmission shaft protective tube 10 is fixedly provided between the two side walls of the screen frame 1 and located on the periphery of the transmission shaft 6. A fixing seat 11 is fixed on the transmission shaft protective tube 10, and a slide rail base 7 is provided on the fixing seat 11. The transmission rod 6 passes through the slide rail base 7 on the fixing seat 11, and a clearance notch is opened on the transmission shaft protective tube 10 at the position corresponding to the eccentric cam B41; the transmission shaft 2 is protected by the transmission shaft protective tube 10, and the slide rail base 7 provided on the transmission shaft protective tube 10 further improves the stability of the transmission rod 6 in driving the screen plate 8 to perform reciprocating linear motion.

[0023] Furthermore, a horizontally arranged limiting hole 73 is opened on the side wall of the guide seat 72 at the position corresponding to the transmission rod 6. The limiting hole 73 is an oblong hole structure, and the ends of the transmission rod 6 pass through the limiting hole 73. The reciprocating linear motion of the transmission rod 6 and the screen plate 8 is limited by the limiting hole 73.

[0024] The novel multi-frequency screen core structure disclosed in this embodiment drives the transmission shaft 2 to rotate by the driving motor 12, and the transmission shafts 2 at the front and rear ends rotate synchronously and in the same direction, and the exciting force generated by the eccentric block 21 provided on the transmission shaft 2 causes the screen frame 1 and the screen plate 8 to vibrate; at the same time, the eccentric cams A22 provided on the front and rear ends of the transmission shaft 2 and the eccentric cams B41 provided on the front and rear ends of the connecting rod 4 collide with each other to cause the screen plate 8 to perform reciprocating linear motion, so that the vibration screening effect is good, the vibration screening efficiency is high, and the problem of blockage of the screen plate 8 is effectively solved. The structure is simple and the operation is stable and reliable.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel multi-frequency screen core structure, comprising two drive shafts rotatably connected between two side walls of a screen frame, a drive motor for driving the drive shafts to rotate provided on one side wall of the screen frame, and an eccentric block provided on each drive shaft, characterized in that: The front and rear ends of both side walls of the screen frame are movably connected with connecting rod 1 through a horizontal rotating shaft, the end of connecting rod 1 is connected with an eccentric cam B, and the starting end of connecting rod 1 is movably connected with connecting rod 2, and a horizontally arranged transmission rod is connected between the connecting rods 1 on both sides, and an eccentric cam A that can collide with the eccentric cam B is provided at a position corresponding to the eccentric cam B on the transmission shaft; slide rail bases are fixedly provided at the positions of the end parts of the transmission rods on both side walls of the screen frame, and both ends of the transmission rod pass through the slide rail bases on both sides, and pulleys are connected at positions on the transmission rod corresponding to the slide rail bases, and the pulleys can slide along the setting direction of the slide rail base; a screen plate is provided above the transmission rod, and the transmission rod is fixedly connected to the screen plate through a connecting plate.

2. A novel multi-frequency screen core structure according to claim 1, characterized in that: The transmission shafts at the front and rear ends rotate synchronously and in the same direction. The eccentric cams A of the transmission shafts at the front and rear ends are set at the same angle. The connecting rods at the front and rear ends are symmetrically set.

3. The novel multi-frequency screen core structure according to claim 1 is characterized in that: A transmission shaft protection tube is fixedly provided on the periphery of the transmission shaft between the two side walls of the screen frame, a fixing seat is fixed on the transmission shaft protection tube, and a slide rail base is provided on the fixing seat, and the transmission rod passes through the slide rail base on the fixing seat.

4. The novel multi-frequency screen core structure according to claim 1 is characterized in that: The slide rail base includes a support seat fixed on the side wall of the screen frame, a guide seat is fixed on the top of the support seat, the guide seat is a horizontally arranged square tube structure, and a linear slide rail adapted to the pulley is provided inside the guide seat.

5. The novel multi-frequency screen core structure according to claim 4 is characterized in that: A horizontally arranged limiting hole is opened on the side wall of the guide seat at a position corresponding to the transmission rod. The limiting hole is an oblong hole structure, and the ends of the transmission rod both pass through the limiting hole.

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