Three-axis elliptical vibration horizontal screen

Abstract

The utility model discloses a three-axis elliptical vibration horizontal screen, which comprises a main screen frame, three vibration exciters and a screen mesh assembly, the main screen frame consists of a fixed cross beam and screen frame side plates, the fixed cross beam is fixed between the screen frame side plates in parallel, the three vibration exciters are fixed on the screen frame side plates, and the screen mesh assembly is arranged on the screen mesh assembly. Wherein the rotating direction of the two vibration exciters is different from that of the third vibration exciter, the screen assembly is arranged in the main screen frame and comprises a screen and a middle screen pressing mechanism, hook plates are arranged on the two sides of the screen, the screen is fastened to side plates of the screen frame through the hook plates for pulling the screen, and the middle screen pressing mechanism comprises a bolt seat, a rubber strip and a T-shaped bolt. The bolt seat is arranged on the fixed cross beam; the horizontal screen not only combines the advantages of a linear screen and a circular vibrating screen, is large in yield and high in screening efficiency, brings great convenience to installation space and maintenance, but also prevents the situation that the main screen frame is collided due to resonance, and the screen is high in structural strength and can be prevented from being seriously deformed.

Description

Technical Field

[0001] The utility model relates to the technical field of horizontal screens, in particular to a three-axis elliptical vibration horizontal screen. Background Art

[0002] The current vibrating screens can be roughly divided into circular vibrating screens and linear vibrating screens according to the vibration trajectory. The vibrating screen is generally composed of a vibrating mechanism, a screen box and a transmission device. Multiple layers of screen mesh are installed in the screen box. In previous designs, the following defects mainly exist: First, large and medium-sized circular vibrating screens are all single-spindle, double-bearing structures. The bearings generally used in this type of equipment are large, and the speed and load have reached the limit, which greatly reduces the reliability of the equipment; the screen box is placed at an angle, with a large throughput, but greatly reduces the screening efficiency; second, the linear vibrating screen is arranged horizontally and moves in a straight line, with high screening efficiency, but a small throughput; Chinese patent application No. 201610472125.3 discloses a horizontal three-axis vibrating screen, including a screen box assembly, a base and an excitation system, A horizontal three-axis vibrating screen is adopted, and three groups of oscillators are used at the same time, which has strong processing capacity and high screening efficiency. The problem with this patent is that the screen is fixed by a tensioning assembly. If the mesh surface of the screen is too large, during screening, due to the lack of fixation and support for the middle part of the screen, the material is easily concentrated in the middle of the screen, resulting in serious deformation of the screen, affecting the screening efficiency and screening quality; Chinese patent application No. 201520208302.8 discloses a modular three-axis synchronous horizontal screen, the box body consists of side panels and cross beams, and the exciter module includes three groups of horizontally arranged exciters, extending along the side panels; there is a problem that when resonance occurs, the screen box is easy to collide with the base. In response to the above problems, a three-axis elliptical vibrating horizontal screen is proposed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a three-axis elliptical vibration horizontal screen. The horizontal screen not only combines the advantages of the linear screen and the circular vibration screen, has a large output and high screening efficiency, brings great convenience to the installation space and maintenance, but also prevents the main screen frame from colliding due to resonance. The screen structure has high strength, can avoid serious deformation of the screen, improve the screening effect, extend the service life of the screen, 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 three-axis elliptical vibrating horizontal screen, comprising a main screen frame, an exciter and a screen assembly, the main screen frame consisting of a fixed crossbeam and screen frame side plates, the fixed crossbeam is fixed in parallel between the screen frame side plates, the screen frame side plates are fixed with exciters, three exciters are provided, two of which rotate in different directions from the third exciter, the screen assembly is provided in the main screen frame, the screen assembly comprises a screen and a middle screen pressing mechanism, hook plates are provided on both sides of the screen, the screen is fastened to the screen frame side plates by the hook plates of the pulling net, the middle screen pressing mechanism comprises a bolt seat, a rubber strip and a T-bolt, the bolt seat is provided on the fixed crossbeam, the T-bolt passes through the bolt seat, the screen and the rubber strip and is locked by a nut, and a rubber support block is provided on the fixed crossbeam.

[0005] Furthermore, a base is provided below the main screen frame, and a support seat is provided between the base and the main screen frame. The support seat is a rubber spring seat.

[0006] Furthermore, buffer devices are respectively provided on both sides of the base, and the buffer devices are rubber springs or steel helical compression springs.

[0007] Furthermore, the vibrators are driven by synchronous gears, and the eccentric blocks of the three vibrators have different phase angles.

[0008] Furthermore, a power device is provided on the base, and the power device includes a motor, a belt and a pulley.

[0009] Furthermore, the hook plate is connected to the tensioning plate, and the tensioning plate is fixedly connected to the side plate of the screen frame through long bolts.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. This horizontal screen not only combines the advantages of linear screen and circular vibration screen, has large output and high screening efficiency, brings great convenience to installation space and maintenance, but also prevents the main screen frame from colliding due to resonance. The screen structure has high strength, which can avoid serious deformation of the screen, improve screening effect and extend the service life of the screen.

[0012] 2. The rubber support block plays the role of supporting the screen. Without affecting the vibration of the screen, it plays the role of elastic support and improves the bearing capacity of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the screen frame of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the screen assembly of the utility model.

[0016] In the figure: 1 base, 2 main screen frame, 3 vibrator, 4 power device, 5 support seat, 6 buffer device, 7 screen assembly, 8 screen frame side plate, 9 fixed beam, 10 rubber strip, 11 T-bolt, 12 bolt seat, 13 hook plate, 14 tensioning plate, 15 long bolt, 16 screen, 17 rubber support block. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0018] See also Figure 1-3 The utility model provides a technical solution: a three-axis elliptical vibrating horizontal screen, including a main screen frame 2, an exciter 3 and a screen assembly 7. The main screen frame 2 is composed of a fixed crossbeam 9 and a screen frame side plate 8. The fixed crossbeam 9 is fixed parallel to the screen frame side plates 8. The exciter 3 is fixed on the screen frame side plates 8. Three exciters 3 are provided, and the rotation directions of two exciters 3 are different from the rotation direction of the third exciter 3. When rotating, a resultant force is generated, thereby generating a fixed amplitude, and the motion trajectory is elliptical, combining the advantages of linear screens and circular vibrating screens, with large output and high screening efficiency. The exciters 3 of the three-axis elliptical screen are all arranged together, which brings great convenience to the installation space and maintenance. The screen assembly 7 is arranged in the main screen frame 2. The screen assembly 7 includes a screen 16 and a middle screen pressing mechanism. Hook plates 1 are provided on both sides of the screen 16 3. The screen 16 is fastened to the side plate 8 of the screen frame through the hook plate 13 of the pulling net. Specifically, the hook plate 13 is connected to the tensioning pressure plate 14, and the tensioning pressure plate 14 is fixedly connected to the side plate 8 of the screen frame through a long bolt 15. The middle pressing mechanism includes a bolt seat 12, a rubber strip 10 and a T-bolt 11. The bolt seat 12 is arranged on the fixed crossbeam 9. The T-bolt 11 passes through the bolt seat 12, the screen 16 and the rubber strip 10 and is locked by a nut. By fixing the middle of the screen 16, the screening surface of the screen 16 is divided into two, which can avoid serious deformation of the screen 16, improve the screening effect, and extend the service life of the screen. A rubber support block 17 is provided on the fixed crossbeam 9. The rubber support block 17 plays a role in supporting the screen 16. Without affecting the vibration of the screen 16, it plays an elastic supporting role and improves the bearing capacity of the screen 16.

[0019] A base 1 is provided below the main screen frame 2 , and a support seat 5 is provided between the base 1 and the main screen frame 2 . The support seat 5 is a rubber spring seat.

[0020] Buffer devices 6 are respectively provided on both sides of the base 1. The buffer devices 6 are rubber springs or steel spiral compression springs to prevent the main screen frame 2 from colliding with the base 1 during resonance, ensuring that the equipment is safe and reliable when working.

[0021] The vibrator 3 is a synchronous gear transmission, and the eccentric blocks of the three vibrators 3 have different phase angles.

[0022] A power device 4 is provided on the base 1. The power device 4 includes a motor, a belt and a pulley. The power device 4 provides power for the vibrator 3. The driving structure is an existing conventional technology and is not described in detail here. A belt cover is provided outside the belt to prevent mechanical damage.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Without departing from the spirit and scope of the present invention, the present invention may also have various changes and improvements, which fall within the scope of the present invention to be protected.

Claims

1. A three-axis elliptical vibrating horizontal screen, comprising a main screen frame (2), a vibrator (3) and a screen assembly (7), characterized in that: The main screen frame (2) is composed of a fixed crossbeam (9) and a screen frame side plate (8). The fixed crossbeam (9) is fixed parallel to the screen frame side plates (8). An exciter (3) is fixed on the screen frame side plates (8). Three exciters (3) are provided. The rotation direction of two exciters (3) is different from the rotation direction of the third exciter (3). A screen assembly (7) is provided in the main screen frame (2). The screen assembly (7) includes a screen (16) and a middle screen pressing mechanism. The screen (16) Hook plates (13) are provided on both sides of the screen (16), and the screen (16) is fastened to the side plates (8) of the screen frame through the hook plates (13) of the screen pulling. The middle screen pressing mechanism includes a bolt seat (12), a rubber strip (10) and a T-bolt (11). The bolt seat (12) is provided on the fixed beam (9). The T-bolt (11) passes through the bolt seat (12), the screen (16) and the rubber strip (10) and is locked by a nut. A rubber support block (17) is provided on the fixed beam (9).

2. A three-axis elliptical vibrating horizontal screen according to claim 1, characterized in that: A base (1) is provided below the main screen frame (2), a support seat (5) is provided between the base (1) and the main screen frame (2), and the support seat (5) is a rubber spring seat.

3. A three-axis elliptical vibrating horizontal screen according to claim 2, characterized in that: Buffer devices (6) are respectively provided on both sides of the base (1), and the buffer devices (6) are rubber springs or steel helical compression springs.

4. The three-axis elliptical vibrating horizontal screen according to claim 1, characterized in that: The vibrator (3) is a synchronous gear transmission, and the eccentric blocks of the three vibrators (3) have different phase angles.

5. The three-axis elliptical vibrating horizontal screen according to claim 1, characterized in that: A power device (4) is provided on the base (1), and the power device (4) comprises a motor, a belt, and a pulley.

6. The three-axis elliptical vibrating horizontal screen according to claim 1, characterized in that: The hook plate (13) is connected to the tensioning pressing plate (14), and the tensioning pressing plate (14) is fixedly connected to the screen frame side plate (8) through a long bolt (15).

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