A double-shaft elliptical vibrating screen

Abstract

The utility model discloses a double -shaft elliptical vibration sieve relates to vibrating screen technical field. Including sieve box main part, sieve box main part includes box, crossbeam subassembly and net rack, and the front and back side of sieve box main part is fixedly installed with damping mechanism, and damping mechanism includes spring damping shock absorber and mounting bracket, and the front and back side wall of sieve box main part is installed with assembly mechanism between the position of near middle part, and assembly mechanism includes exciter, counterweight and first universal joint, and assembly mechanism is connected with drive mechanism transmission, and drive mechanism includes speed reducer, second universal joint, third universal joint and belt pulley. The utility model assembly mechanism one clockwise rotation, one counterclockwise rotation, make vibration sieve produce vibration, form elliptical trajectory vibration, and vibration sieve horizontal arrangement, and amplitude is big, and the advantage of linear screen and round vibration sieve has been comprehensively, and the output is big, and screening efficiency is high, and bearing is small, and the limit speed is high, and vibration sieve performance has been greatly promoted.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically a biaxial elliptical vibrating screen. Background Technology

[0002] In existing technology, vibrating screens can be classified according to their motion trajectory into: circular vibrating screens, linear vibrating screens, and elliptical vibrating screens. A vibrating screen generally consists of an exciter, a screen box, and a transmission device. The screen box includes side plates and crossbeam assemblies. Previous designs had the following main drawbacks: First, large and medium-sized circular vibrating screens typically use a single assembly and double bearing structure. These screens generally use large-sized bearings, and their speed and load capacity have reached their limits, significantly reducing the reliability of the equipment. The screen box is placed at an inclined angle, resulting in a large throughput but low screening efficiency. Second, linear vibrating screens are horizontally placed and move in a straight line, resulting in high screening efficiency but a relatively small throughput. Third, elliptical vibrating screens are horizontally arranged with a large amplitude, combining the advantages of linear and circular screens, resulting in high output and high screening efficiency. Utility Model Content

[0003] This invention provides a biaxial elliptical vibrating screen to solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a biaxial elliptical vibrating screen, comprising a screen box body, wherein a shock-absorbing mechanism is fixedly installed on the front and rear sides of the screen box body, and an assembly mechanism is installed between the front and rear side walls of the screen box body near the middle position, wherein the assembly mechanism is connected to the drive mechanism for transmission.

[0005] Furthermore, the main body of the sieve box includes a box body, a crossbeam assembly, and a mesh frame. The upper surface and left and right sides of the box body are open structures. Crossbeam assemblies are evenly arranged on the left and right sides near the upper and lower positions between the front and rear side walls of the box body. A mesh frame is fixedly installed on the upper surface of each crossbeam assembly.

[0006] Furthermore, the shock absorption mechanism includes spring damping shock absorbers, screen leg brackets, and mounting brackets. Four spring damping shock absorbers are provided. The spring damping shock absorbers are respectively installed on the four corners of the front and rear sides of the screen box body through the screen leg brackets, and mounting brackets are fixedly installed between the lower surfaces of the spring damping shock absorbers on the same front and rear sides.

[0007] Furthermore, the assembly includes a vibrator, a counterweight, and a first universal joint. There are four vibrators, which are installed on the front and rear side walls of the screen box body near the middle. Each vibrator has a counterweight on its facing side, and the output shafts of the corresponding front and rear vibrators are connected by the first universal joint.

[0008] Furthermore, the counterweight has a semi-circular structure, and the phase difference between the left and right adjacent counterweights is ninety degrees.

[0009] Furthermore, the drive mechanism includes a reducer, a second universal joint, a third universal joint, and a pulley. There are two reducers. The output shafts of the reducers are connected to the input shafts of the vibrator through the second universal joints. The output shafts of the corresponding front and left reducers are connected to the input shafts through the third universal joints. A pulley is installed on the input shaft on the rear side of the reducer.

[0010] Compared with the prior art, the present invention provides a biaxial elliptical vibrating screen, which has the following advantages:

[0011] This dual-axis elliptical vibrating screen uses a drive mechanism to rotate an assembly. The corresponding vibrators, counterweights, and the first universal joint in the assembly form a single assembly, making it a dual-assembly system. One assembly rotates clockwise, and the other counterclockwise, causing the screen to vibrate in an elliptical trajectory. The screen is horizontally arranged, has a large amplitude, and combines the advantages of linear and circular vibrating screens. It boasts high output, high screening efficiency, small bearing size, and high limiting speed, resulting in a significant improvement in screen performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a top view of the present invention;

[0014] Figure 3 This is the left view of the present invention;

[0015] Figure 4 This is a rear view of the present invention;

[0016] Figure 5 This is a schematic diagram of the installation of the counterweight block of this utility model.

[0017] In the diagram: 1. Main body of the screen box; 101. Box body; 102. Crossbeam assembly; 103. Space frame; 2. Vibration damping mechanism; 201. Spring damping shock absorber; 202. Screen leg bracket assembly; 203. Mounting frame; 3. Assembly mechanism; 301. Vibrator; 302. Counterweight; 303. First universal joint; 4. Drive mechanism; 401. Reducer; 402. Second universal joint; 403. Third universal joint; 404. Pulley. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-5 This utility model discloses a biaxial elliptical vibrating screen, including a screen box body 1. A shock-absorbing mechanism 2 is fixedly installed on the front and rear sides of the screen box body 1. An assembly mechanism 3 is installed between the front and rear side walls of the screen box body 1 near the middle position. The assembly mechanism 3 is connected to the drive mechanism 4 for transmission.

[0020] Specifically, the main body 1 of the sieve box includes a box body 101, a crossbeam assembly 102 and a mesh frame 103. The upper surface and left and right sides of the box body 101 are open structures. The crossbeam assembly 102 is evenly arranged on the left and right sides near the upper and lower positions between the front and rear side walls of the box body 101. The mesh frame 103 is fixedly installed on the upper surface of the crossbeam assembly 102.

[0021] In this embodiment, the crossbeam assembly 102 increases the structural strength of the box 101, and the crossbeam assembly 102 is used to install the mesh frame 103, thereby forming a screen box body 1.

[0022] Specifically, the shock absorption mechanism 2 includes a spring damping shock absorber 201, a screen leg bracket assembly 202, and a mounting bracket 203. Four spring damping shock absorbers 201 are provided. The spring damping shock absorbers 201 are respectively installed on the four corners of the front and rear sides of the screen box body 1 through the screen leg bracket assembly 202, and the mounting bracket 203 is fixedly installed between the lower surfaces of the spring damping shock absorbers 201 on the same front and rear sides.

[0023] In this embodiment, the screen leg bracket assembly 202 is strong and is used to install on the screen box body 1. The spring damping shock absorber 201 is installed on the screen leg bracket assembly 202 to buffer and reduce the vibration generated by the screen box body 1. The mounting bracket 203 is used to install on the frame, so as to achieve the effect of fixing the screen box body 1 by means of the spring damping shock absorber 201.

[0024] Specifically, the assembly 3 includes a vibrator 301, a counterweight 302, and a first universal joint 303. There are four vibrators 301. The vibrators 301 are installed on the front and rear side walls of the screen box body 1 near the middle. Each vibrator 301 has a counterweight 302 on its facing side. The output shafts of the corresponding vibrators 301 are connected by the first universal joint 303.

[0025] In this embodiment, the front and rear vibrators 301 are connected by the first universal joint 303 to form an assembly. Therefore, the assembly mechanism 3 contains two assemblies. The vibrator 301 converts the rotational motion of the main shaft into the elliptical trajectory vibration of the screen box body 1 through the counterweight block 302.

[0026] Specifically, the counterweight 302 has a semi-circular structure, and the phase difference between the left and right adjacent counterweights 302 is ninety degrees.

[0027] In this embodiment, the front and rear counterweights 302 are aligned, and the phase difference between the left and right adjacent counterweights 302 is ninety degrees, causing the vibrator 301 to vibrate in an elliptical trajectory.

[0028] Specifically, the drive mechanism 4 includes a reducer 401, a second universal joint 402, a third universal joint 403, and a pulley 404. There are two reducers 401. The output shafts of the reducers 401 are connected to the input shafts of the vibrator 301 through the second universal joints 402. The output shafts and input shafts of the corresponding front and left reducers 401 are connected through the third universal joints 403. A pulley 404 is installed on the input shaft on the rear side of the reducer 401.

[0029] In this embodiment, the pulley 404 rotates along with the synchronous belt and synchronous pulley on the drive motor, causing the output shaft of the pulley 404 to drive the input shaft of the left reducer 401 to rotate. The output shaft of the right side of the left and right reducers 401 drives the input shaft of the right reducer 401 to rotate through the third universal joint 403. The left and right reducers 401 rotate in opposite directions, causing the left and right reducers 401 to drive the corresponding left and right vibrators 301 to rotate through the second universal joint 402, so that the left and right vibrators 301 rotate in opposite directions. The speed ratio of the left and right reducers 401 is 1:1.

[0030] In use, the mounting bracket 203 in the shock absorption mechanism 2 is used to install it on the frame. The crossbeam assembly 102 connected to the spring damping shock absorber 201 is used to install and fix the box body 101, achieving the effect of installing and fixing the screen box body 1, and at the same time increasing the buffering and shock absorption function of the screen box body 1. The screen frame 103 is used to fix the screen. Then, the reducer 401 in the drive mechanism 4 is installed on the frame. The pulley 404 is driven to rotate by the synchronous belt and synchronous pulley on the drive motor, so that the output shaft of the pulley 404 drives the input shaft of the left reducer 401 to rotate. The output shaft of the right side of the left and right reducers 401 drives the input shaft of the right reducer 401 to rotate through the third universal joint 403. The rotation directions of the left and right reducers 401 are opposite, so that the left reducer 401 rotates in the opposite direction. The right reducer 401 drives the corresponding left and right vibrators 301 in the assembly mechanism 3 to rotate through the second universal joint 402, so that the left and right vibrators 301 rotate in opposite directions. The front and rear vibrators 301 are connected through the first universal joint 303 to form an assembly. Therefore, the assembly mechanism 3 contains two assemblies. The vibrator 301 converts the rotational motion of the main shaft into the elliptical trajectory vibration of the screen box body 1 through the counterweight block 302. That is, the assembly mechanism 3 is a double assembly, one rotating clockwise and the other counterclockwise, so that the vibrating screen vibrates and forms an elliptical trajectory vibration. The vibrating screen is horizontally arranged, with a large amplitude, combining the advantages of linear screen and circular vibrating screen. It has a large output, high screening efficiency, small bearings, and high limiting speed, and the performance of the vibrating screen is greatly improved.

[0031] In summary, this dual-axis elliptical vibrating screen, with one assembly mechanism 3 rotating clockwise and the other counterclockwise, causes the screen to vibrate, forming an elliptical trajectory vibration. The screen is horizontally arranged, has a large amplitude, and combines the advantages of linear and circular vibrating screens. It has a large output, high screening efficiency, small bearings, and a high limiting speed, resulting in a significant improvement in the performance of the vibrating screen.

[0032] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biaxial elliptical vibrating screen, comprising a screen box body (1), characterized in that: The front and rear sides of the sieve box body (1) are fixedly installed with a shock-absorbing mechanism (2), and an assembly mechanism (3) is installed between the front and rear side walls of the sieve box body (1) near the middle position. The assembly mechanism (3) is connected to the drive mechanism (4) in a transmission connection. The assembly (3) includes a vibrator (301), a counterweight (302), and a first universal joint (303). There are four vibrators (301). The vibrators (301) are installed on the front and rear side walls of the screen box body (1) near the middle. The vibrators (301) are provided with counterweights (302) on the opposite sides. The output shafts of the corresponding vibrators (301) are connected by the first universal joint (303).

2. The biaxial elliptical vibrating screen according to claim 1, characterized in that: The main body (1) of the sieve box includes a box body (101), a crossbeam assembly (102) and a wire mesh frame (103). The upper surface and left and right sides of the box body (101) are open structures. The crossbeam assembly (102) is evenly arranged on the left and right sides near the upper and lower positions between the front and rear side walls of the box body (101). The wire mesh frame (103) is fixedly installed on the upper surface of the crossbeam assembly (102).

3. The biaxial elliptical vibrating screen according to claim 1, characterized in that: The shock absorption mechanism (2) includes a spring damping shock absorber (201), a screen leg bracket assembly (202), and a mounting bracket (203). There are four spring damping shock absorbers (201). The spring damping shock absorbers (201) are respectively installed on the four corners of the front and rear sides of the screen box body (1) through the screen leg bracket assembly (202), and the mounting bracket (203) is fixedly installed between the lower surfaces of the spring damping shock absorbers (201) on the same front and rear sides.

4. A biaxial elliptical vibrating screen according to claim 1, characterized in that: The counterweight (302) has a semi-circular structure, and the phase difference between the left and right adjacent counterweights (302) is ninety degrees.

5. A biaxial elliptical vibrating screen according to claim 1, characterized in that: The drive mechanism (4) includes a reducer (401), a second universal joint (402), a third universal joint (403), and a pulley (404). There are two reducers (401). The output shaft of the reducer (401) is connected to the input shaft of the vibrator (301) through the second universal joint (402). The output shaft and input shaft of the corresponding front and left reducers (401) are connected through the third universal joint (403). A pulley (404) is installed on the input shaft on the rear side of the reducer (401).

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