CN101972741A - Triaxial elliptical orbit vibrating screen - Google Patents

Abstract

The invention provides a triaxial elliptical orbit vibrating screen, and belongs to the vibration screening machinery field. The vibrating screen is designed aiming at the disadvantages of complicated structure, high manufacturing cost and difficulty in adjustment and maintenance of the existing triaxial elliptical orbit vibrating screen. In the invention, three single-shaft vibration exciters are arranged on a side board of a screen frame in parallel or in an inverted triangle shape with two exciters above and one exciter below, wherein, the vibration exciter at the middle or lower part is connected with a motor drive device, and the vibration orbit is in a rounded shape; the two vibration exciters at the two sides or upper part are connected with a gear synchronizer through a universal drive shaft, an input shaft of the gear synchronizer is connected with the other motor drive device, and the vibration orbit is in a straight shape; and the rounded vibration orbit and the straight vibration orbit are combined into an elliptical vibration orbit. The screen box of the vibrating screen vibrates for screening operation based on the elliptical vibration orbit. The triaxial elliptical orbit vibrating screen has the characteristics of simple structure, convenient adjustment and maintenance, better adaptability to screening of various materials and the like.

Description

Three-axis elliptical orbit vibrating screen

technical field

The invention belongs to the field of vibration and screening machinery, and mainly relates to a three-axis elliptical track vibrating screen with three uniaxial vibrators as excitation sources and an elliptical vibration track.

Background technique

The structure of the existing three-axis elliptical orbit vibrating screen mainly includes: three excitation axes are arranged in a straight line, connected by three gears with equal parameters and equal numbers of teeth meshing with each other, driven by a motor belt drive, so that the screen box of the vibrating screen forms an ellipse. vibration track. Another structural form is that the three excitation shafts are connected with the gear synchronizer through the universal joint shaft; Elliptical vibration trajectory. The above structural form has the disadvantages that the transmission gear participates in the vibration, the structure is complex, the manufacturing cost is high, the amplitude adjustment is inconvenient, and the failure rate is relatively high during operation. The three-axis elliptical track vibrating screen with this structure is relatively difficult to adjust the vibration direction angle because the three excitation axes are meshed with each other and run in association.

Contents of the invention

The object of the present invention is to provide a three-axis elliptical trajectory vibrating screen, which has a simple structure, convenient adjustment and maintenance, and has good adaptability to the screening of various materials.

The present invention is realized through the following measures. It is mainly composed of a screen box composed of a screen frame and a screen surface, a vibration exciter, a vibration damping support device and a motor transmission device. The vibrator is installed on the side plate of the screen frame, and the center line of the vibrator is perpendicular to the side plate of the screen frame; the installation arrangement of the three exciters is one of the following two ways:

a. The centers of the three exciters are arranged side by side on a straight line and installed on the side plate of the screen frame. The exciter in the middle is connected to a motor transmission; the two exciters on both sides pass through the universal The transmission shaft is connected with the gear synchronizer, and the input shaft of the gear synchronizer is connected with another motor transmission device;

b. The centers of the three exciters are arranged in an inverted triangle with the upper two and the lower one, and are installed on the side plate of the screen frame. The lower exciter is connected with a motor transmission device; the upper two exciters The gear synchronizer is connected with the gear synchronizer through the cardan shaft, and the input shaft of the gear synchronizer is connected with another motor transmission device.

The vibration exciter located in the middle or below is driven by the motor transmission to generate a circular vibration track, and the two vibration exciters located on both sides or above are driven by the motor transmission to rotate synchronously in different directions through the universal drive shaft and the gear synchronizer to generate Linear vibration trajectory, the adjustment range of the vibration direction angle is 30-60°; the line of action of the resultant force of the exciter forming the linear vibration trajectory passes through the center of mass of the vibrating screen box, and the center of the exciter forming a circular vibration trajectory is located in the linear vibration trajectory. The resultant force action line of the vibrator; the circular vibration trajectory and the linear vibration trajectory are synthesized into an elliptical vibration trajectory.

The shape of the elliptical vibration track, that is, the eccentric mass of the eccentric block on the exciter can be adjusted, thereby changing the size of the major axis and the minor axis of the elliptical vibration track. The major axis of the elliptical vibration track is adjusted by the eccentric mass on the two exciters located on both sides or above; the minor axis of the elliptical vibration track is adjusted by the eccentric mass located on the middle or the lower exciter.

In order to meet the needs of screening different materials, the screen surface of the vibrating screen is 1-3 layers, the inclination angle of the screen surface is 0-30°, and the shape of the screen surface is broken line or straight line.

The beneficial effect of the present invention is that the middle or lower one of the three uniaxial vibrators is connected to the motor transmission, and the two sides or the upper two are connected to the motor transmission through the universal transmission shaft and the gear synchronizer. Driven by the motor transmission device, the formed circular vibration trajectory and linear vibration trajectory are synthesized into an elliptical vibration trajectory. The position of the vibrator and the formed elliptical vibration trajectory can be arranged and adjusted according to the needs of the design. It has the characteristics of simple structure, convenient adjustment and maintenance, etc., and has good adaptability to the screening of various materials.

Description of drawings

Fig. 1 is a schematic structural diagram of the present invention, Fig. 2 is a schematic diagram of vibrators arranged in an inverted triangle, and Fig. 3 is a top view of Fig. 1 . In the figure, 1 is the screen frame, 2, 3, 4 are the vibration exciter, 5 is the screen surface, 6 is the vibration damping support device, 7, 8 is the motor transmission device, 9 is the gear synchronizer, 10 is the universal transmission shaft, K is the center of mass of the vibrating screen box, L is the resultant force line of the linear vibration track exciter, and α is the vibration direction angle.

Detailed ways

The embodiments of the present invention are described below in conjunction with the accompanying drawings, which are mainly composed of a screen box composed of a screen frame 1 and a screen surface 5, a vibration exciter, a vibration-damping support device 6 and a motor transmission device. The three-axis elliptical track vibrating screen has three uniaxial exciters 2, 3, 4, which are installed on the side plate of the screen frame 1, and the center line of the exciter is perpendicular to the side plate of the screen frame 1. The three exciters are arranged side by side and equidistant on a straight line, the exciter 3 in the middle is connected to the motor transmission 7; the two exciters 2 and 4 on both sides are synchronized with the gears through the cardan shaft 10 The gear synchronizer 9 is connected, and the input shaft of the gear synchronizer 9 is connected with the motor transmission device 8 . The gear synchronizer 9 does not participate in the vibration.

Another embodiment is a three-axis elliptical trajectory vibrating screen with three vibrators arranged in an inverted triangle shape, and the center of the lower vibrator 3 is on the resultant force line L of the upper two vibrators 2 and 4 . The lower vibrator 3 is connected to the motor transmission 7; the upper two vibrators 2 and 4 are connected to the gear synchronizer 9 through the cardan shaft 10, and the input shaft of the gear synchronizer 9 is connected to the motor transmission 8 connect. The gear synchronizer 9 does not participate in the vibration.

The vibration trajectory of the vibrator 3 directly connected to the motor transmission 7 is circular, and the vibration trajectory of the two vibration exciters connected to the motor transmission 8 through the cardan shaft 10 and the gear synchronizer 9 is linear , the circular vibration trajectory and the linear vibration trajectory are synthesized into an elliptical vibration trajectory, and the vibration direction angle α of the vibrating screen is 45°. The resultant force line L of the linear vibration track vibrator 2, 4 passes through the center of mass K of the vibrating screen box, and the center of the circular vibration track vibrator is located on the resultant force line L of the linear vibration track vibrator. The screen surface of the vibrating screen is a single layer, and the shape is a broken line.

Claims (3)

1. three-axis elliptic track vibratory sieve, mainly screen box, vibrator, vibration damping support device and the transmission gear for electric motor that is made of screen frame and compass screen surface formed, it is characterized in that: three-axis elliptic track vibratory sieve has three one-eccentric rotor type vibrators (2), (3), (4), be installed on the side plate of screen frame (1), the center line of vibrator is vertical with the side plate of screen frame (1); The installation arrangement mode of three vibrators is one of following dual modes:

The center of a, three vibrators is set up in parallel point-blank, is installed on the side plate of screen frame (1), and the vibrator (3) in the middle of being positioned at is connected with transmission gear for electric motor (7); Two vibrators (2) that are positioned at both sides are connected with gear synchronized (9) by universal drive shaft (10) with (4), and the power shaft of gear synchronized (9) is connected with transmission gear for electric motor (8);

The center of b, three vibrators is top two, following one del setting, is installed on the side plate of screen frame (1), is positioned at following vibrator (3) and is connected with transmission gear for electric motor (7); Be positioned at top two vibrators (2) and be connected with gear synchronized (9) by universal drive shaft (10) with (4), the power shaft of gear synchronized (9) is connected with transmission gear for electric motor (8);

Be positioned at middle or following vibrator (3) and drive generation circular vibration track by transmission gear for electric motor (7), be positioned at both sides or top two vibrators (2) and (4) by universal drive shaft (10) and gear synchronized (9), drive synchronous incorgruous rotation by transmission gear for electric motor (8), produce the straight-line oscillation track, the adjusting range of its vibrating direction angle α is 30～60 °; The vibrator (2) of formation straight-line oscillation track and the force action line of (4) form on the force action line L that is centered close to straight-line oscillation track vibrator of circular vibration track vibrator (3) by the barycenter K of vibratory sieve screen box; Circular vibration track and straight-line oscillation track synthesize the elliptical vibration track.

2. three-axis elliptic track vibratory sieve according to claim 1, it is characterized in that: the shape of elliptical vibration track is that the eccentric mass that vibrator (2), (3), (4) are gone up eccentric block can be adjusted, and the major axis of elliptical vibration track is by being positioned at both sides or top two vibrators (2) and the eccentric mass adjustment on (4); The minor axis of elliptical vibration track is by the eccentric mass adjustment that is positioned on the middle or following vibrator (3).

3. three-axis elliptic track vibratory sieve according to claim 1 is characterized in that: the compass screen surface of vibratory sieve (5) is 1～3 layer, and the inclination angle of compass screen surface (5) is 0～30 °, and the shape of compass screen surface (5) is broken line shape or linear.

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