CN106513303A - Disc type motor driven dual-vibration-exciter vibrating screen - Google Patents

Abstract

The invention discloses a vibrating screen with double exciters driven by a disc motor, which is used for solid-liquid separation or grading and screening of solid-phase materials in the fields of petroleum and natural gas development, coal mines, metallurgy, and chemical industry. It mainly consists of a base, a screen, It is composed of eccentric shaft, hollow tube, vibration isolation spring, screen box, disc motor, etc. The disc motors are respectively installed on the outer ends of the two side plates of the screen box, and are placed parallel to the axial direction along the length of the screen box. A hollow tube is designed in the side plate of the screen box, and the eccentric shaft is installed in the hollow tube. The vibrator is composed of a disc-shaped motor connected to an eccentric shaft through a spline. The installation plane of the vibrator is arranged parallel to or inclined at a certain angle with the screen surface of the screen box, so that the vibrator has a certain mass-to-diameter ratio and realizes Elliptical or linear vibration of the vibrating screen. The present invention adopts a disc-shaped motor with small volume and thin shape, which reduces the size of the screen box, makes the structure compact, realizes the large amplitude and large processing capacity of the vibrating screen, and improves the screening efficiency.

Description

A vibrating screen with double exciters driven by a disc motor

technical field

The invention relates to the technical field of vibrating screens, in particular to a double-exciter vibrating screen driven by a disc motor, which is suitable for engineering fields such as oil and gas development, coal mines, metallurgy, and chemical engineering.

Background technique

Since Dr. Blehman of the former Soviet Union proposed the vibration synchronization theory of double exciters in the 1960s, the forced synchronous vibrating screen has developed into the current self-synchronizing vibrating screen. The current double-exciter vibrating screen chooses two short excitation motors or long cylinder type excitation motors as the excitation source, which has the advantages of simple structure and easy maintenance, but the excitation force is limited by what the excitation motor can provide Due to the limitation of the maximum excitation force, it is often unable to meet the needs of vibrating screens, especially when large-area screens are used to process material screening, traditional short excitation motors and long cylinder type excitation motors are not competent. If the number of excitation motors is increased to increase the vibration force, the mass of the vibration exciter as a whole of the vibrating screen will inevitably increase, the total vibration mass will increase, and the energy consumption will increase accordingly. The electromechanical coupling effect between vibrator motors is strong, which may cause the actual effective excitation force to not increase, or even be smaller than that of dual vibrators. Existing vibrating screens using eccentric shaft excitation, the motor has a large axial dimension, and is generally installed on the base, connected to the eccentric shaft through a universal coupling, etc., the system structure is complex, the maintenance workload is large, and the area is occupied large area. In order to overcome the above disadvantages, a vibrating screen with double exciters driven by a disc motor of the present invention is proposed.

Contents of the invention

The object of the present invention is to provide a double-exciter vibrating screen driven by a disc motor, which has a large exciting force, a compact structure, and a small footprint, and can effectively improve the handling capacity and screening efficiency of the vibrating screen.

In order to achieve the above object, the present invention adopts the following technical solutions.

A double exciter vibrating screen driven by a disc motor consists of a base, a screen, a first eccentric shaft, a first hollow tube, a second eccentric shaft, a second hollow tube, a vibration isolation spring, a screen box, a first disc Motor, second disc motor, left end bearing cap, left end self-aligning roller bearing, right end self-aligning roller bearing, right end bearing cap.

The first disc motor and the second disc motor are installed on the outer ends of the two side plates of the screen box, distributed along the length direction of the screen box in parallel to the axial direction, and the first hollow tube and the second hollow tube are arranged in the side plate of the screen box. The installation center of the first disc motor and the first hollow tube is on the same axis, and the installation center of the second disc motor and the second hollow tube is on the same axis.

The first eccentric shaft and the second eccentric shaft are installed in the first hollow tube and the second hollow tube respectively, and the left end spherical roller bearing and the right end spherical roller bearing are installed at both ends of the hollow tube, and the left end spherical roller bearing and the right end spherical roller bearing are installed. The right end spherical roller bearing supports the eccentric shaft, the left end of the left end spherical roller bearing is equipped with a left end bearing cover, and the right side of the right end spherical roller bearing is equipped with a right end bearing cover.

The output shafts of the first disc motor and the second disc motor are designed as external splines, the connecting parts of the first eccentric shaft and the second eccentric shaft and the motor are designed as internal splines, and the output shaft of the disc motor is inserted into the coupling position of the eccentric shaft. The two form a splined connection. The first disc motor drives the first eccentric shaft to rotate to generate an exciting force, thereby forming a vibrator, and the second disc motor drives the second eccentric shaft to rotate to generate an exciting force to form another vibrator, two vibrators The installation plane is parallel to the screen surface of the screen box or forms a certain angle with the screen surface of the screen box. The two disc motors rotate at the same speed, and the combined force of the excitation inertia force makes the vibrating screen realize the required vibration motion.

The present invention has the following advantages: 1. Compared with the current vibrating screen with double exciting motors, it can provide a larger exciting force and improve the screening efficiency of the vibrating screen. 2. Compared with the current vibrating screen with motor-driven eccentric shaft, the disc motor has small axial size and light weight, and can be directly installed on the side plate of the screen box, which simplifies the structure of the vibrating screen and occupies a small area. 3. It can be applied to a larger screening area and increase the throughput of the vibrating screen.

Description of drawings

Fig. 1 is a schematic three-dimensional view of the structure of the present invention.

Fig. 2 is a schematic front view of the structure of the present invention.

Fig. 3 is a schematic top view of the structure of the present invention.

Fig. 4 is a schematic diagram of the installation structure of the disc motor and the eccentric shaft of the present invention.

In the figure: 1-base, 2-screen, 3-first eccentric shaft, 4-first hollow tube, 5-second eccentric shaft, 6-second hollow tube, 7-vibration isolation spring, 8-screen box , 9-the first disc motor, 10-the second disc motor, 11-left end bearing cap, 12-left end self-aligning roller bearing, 13-right end self-aligning roller bearing, 14-right end bearing cap.

detailed description

The embodiments of the present invention will be further described in detail in conjunction with the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a double exciter vibrating screen driven by a disc motor of the present invention consists of a base 1, a screen 2, a first eccentric shaft 3, a first hollow tube 4, Second eccentric shaft 5, second hollow tube 6, vibration isolation spring 7, screen box 8, first disc motor 9, second disc motor 10, left end bearing cover 11, left end spherical roller bearing 12, right end adjustment Heart roller bearing 13, right end bearing cap 14 form.

The first disc motor 9 and the second disc motor 10 are installed on the outer ends of the two side plates of the screen box 8, placed axially parallel at a certain distance along the length direction of the screen box 8, and the first hollow pipe is arranged in the side plate of the screen box 8 4 and the second hollow tube 6, two hollow tubes play a protective role to its inner parts. The first disc motor 9 and the first hollow tube 4 are installed on the same axis, and the second disc motor 10 and the second hollow tube 6 are installed on the same axis.

The first eccentric shaft 3 and the second eccentric shaft 5 are installed in the first hollow tube 4 and the second hollow tube 6 respectively, and the left end spherical roller bearing 12 and the left end of the first hollow tube 4 and the second hollow tube 6 are installed respectively. The right-end self-aligning roller bearing 13, the first eccentric shaft 3 and the second eccentric shaft 5 are supported by the self-aligning roller bearing, the left end bearing cover 11 is installed on the left side of the left-end self-aligning roller bearing 12, and the right-end self-aligning roller bearing 13 Right side bearing cover 15 is installed on the right side, guarantees the working position of the first eccentric shaft 3 and the second eccentric shaft 5.

The output shafts of the first disk motor 9 and the second disk motor 10 are designed as external splines, and the first eccentric shaft 3 and the second eccentric shaft 5 are designed as internal splines with the motor connection part, and the first disk motor 9 The output shaft is inserted into the internal spline of the first eccentric shaft 3, and the two form a spline connection. The first disc motor 9 drives the first eccentric shaft 3 to rotate through a spline connection to generate an excitation force, thereby forming an exciter, and the second disc motor 10 drives the second eccentric shaft 5 to rotate through a spline connection to generate an excitation force , forming another exciter. The installation plane of the two exciters is parallel to the screen surface or at a certain inclination angle, and the first disc motor 9 and the second disc motor 10 rotate in opposite directions at the same speed. The exciting force of the vibrating screen has a certain ratio, and the resulting force makes the vibrating screen vibrate on an elliptical or straight track.

The above description is only the technical idea of the present invention, and does not limit the protection scope of the present invention. Any equivalent modifications and changes made within the spirit and principles of the present invention shall fall within the protection scope of the present invention.

Claims (2)

1. A double exciter vibrating screen driven by a disc motor consists of a base (1), a screen (2), a first eccentric shaft (3), a first hollow tube (4), and a second eccentric shaft (5) , second hollow tube (6), vibration isolation spring (7), screen box (8), first disc motor (9), second disc motor (10), left end bearing cap (11), left end self-aligning The roller bearing (12), the right-end self-aligning roller bearing (13), and the right-end bearing cover (14), are characterized in that: the first disc motor (9) and the second disc motor (10) are installed in the screen box (8) The outer ends of the two side plates are placed parallel to the axial direction along the length direction of the screen box (8), and the screen box (8) is provided with the first hollow tube (4) and the second hollow tube (6) connecting the two side plates, The first disc motor (9) and the first hollow tube (4) are installed on the same axis, the second disc motor (10) and the second hollow tube (6) are installed on the same axis; the first eccentric shaft (3 ) and the second eccentric shaft (5) are respectively installed in the first hollow tube (4) and the second hollow tube (6). 2. A motor-driven dual-exciter vibrating screen according to claim 1, characterized in that: the output shafts of the first disc motor (9) and the second disc motor (10) are external splines , the first eccentric shaft (3) and the second eccentric shaft (5) are connected to the motor by internal splines, the output shaft of the first disc motor (9) is inserted into the internal splines of the first eccentric shaft (3), and the two The latter forms a spline connection, the first disc motor (9) drives the first eccentric shaft (3) to rotate through the spline connection to generate an exciting force, thus forming an exciter, the second disc motor (10) through the spline Connect and drive the second eccentric shaft (5) to rotate to generate an exciting force to form another exciter. The installation plane of the two exciters is parallel to the screen surface or at a certain inclination angle. The first disc motor (9) and the second disc motor The motor (10) rotates in the opposite direction at a constant speed, so that the resultant force formed by the two exciters realizes the elliptical or linear vibration of the vibrating screen.