CN201415187Y

CN201415187Y - Multi-amplitude vibrating screen

Info

Publication number: CN201415187Y
Application number: CN2009200147157U
Authority: CN
Inventors: 刘宗占; 刘东辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-19
Filing date: 2009-06-19
Publication date: 2010-03-03
Anticipated expiration: 2019-06-19

Abstract

A multi-amplitude vibrating screen comprises a screen box, a screen frame, a vibration exciter and a rapping device. Screen meshes are mounted in the screen box, the vibration exciter 7 is mounted onthe screen box 1, a feed inlet 16 is arranged on the top of the screen box, grading material outlets corresponding to each layer of the screen meshes are arranged at the other end of the screen box, alower discharge outlet 10 is arranged on the bottom of the screen box, a coarse screen 4 is installed on the screen frame 2 on the upper layer of the screen box 1, a counterweight 9 is arranged on the coarse screen, two sides of the screen box are connected with a support 11, the support is pressed by a spring 3 via a bolt 12 and a lower support 13, the lower support 13 is connected with the screen box 1, the lower portion of the coarse screen 4 is equipped with a medium screen and a fine screen, a screen mesh support 8 is arranged on the bottoms of the medium and fine screens, the rapping device is arranged on the lower portion of the support 8, an rotating shaft of the rapping device is equipped with symmetrical arms, end portions of the symmetrical arms are provided with rapping hammers, and one side of each vibrating spring is connected to the screen box while the other end is connected with an armature. The armatures can be absorbed by electromagnets, and then screen meshes withdifferent mesh numbers can work in conditions of different amplitudes under the same excitation force, thereby shortening processes, reducing production cost and increasing screening efficiency of thevibrating screen.

Description

Many amplitude vibration sieves

Technical field

The utility model relates to a kind of vibration screening device, particularly relates to a kind of many amplitude vibration sieves of efficient multi-stage screening.

Background technology

Screen cloth in the existing common vibratory sieve mechanism is only worked under a kind of amplitude condition usually, when if thickness granularity difference is very big in the material that is sized, the gradation sizing modes that adopt: i.e. large granular materials large amplitude screen(ing) machine more, after large granular materials sifts out, change the bigger material of little amplitude screen(ing) machine screening mesh again over to, amplitude is little if reason is coarse-grained material, can make screen cloth stop up sieving capacity descends, and fine granular materials adopts large amplitude, can make material in sieve overstand, movement velocity is too fast and reduce the screen(ing) machine meeting, causes screening efficiency to descend.The screen cloth of common vibratory sieve is tightened form and is adopted hook plate and bolt arrangement, and screen cloth particularly fine-structure mesh is not easy to tighten, and screen cloth is torn easily in the running.

The utility model content

The deficiency that the utility model exists at prior art, provide a kind of under same exciting force effect the screen cloth of different meshes can under the various amplitude condition, work, promptly realize the vibratory sieve of the many amplitudes of a machine, flow process is shortened reduce production costs again, improved bolting efficient.

The screen cloth of the utility model different meshes in a vibration screening mechanism can move under the various amplitude condition, promptly the coarse meshed sieve net under the large amplitude state, the detailed catalogue screen cloth under little amplitude state, realize the disposable accurate separation of thickness material thus.The technical solution adopted in the utility model is for achieving the above object: a kind of many amplitude vibration sieves, comprise screen box [1], screen frame [2], vibrator [7], support [11] and rapping apparatus [6], screen cloth is installed in screen box, described vibrator [7] is installed on the screen box, be provided with charging aperture [16] at screen box [1] top, at the corresponding classification material outlet that is provided with of corresponding each layer screen cloth of screen box [1] other end, the screen box bottom is provided with lower discharge port [10], it is characterized in that: the screen frame [2] that is positioned at screen box [1] upper strata is equipped with wide-meshed screen [4], be provided with balancing weight [9] on the net, screen frame [2] both sides are connected with support [11], spring [3] compresses support [11] by screw rod [12] and lower support [13], and lower support [13] is connected with screen box [1]; Middle fine screen mesh is equipped with in wide-meshed screen [4] bottom, net bottom is provided with screen cloth support [8], being installed in support [8] bottom is rapping apparatus [6], it is the symmetrical support arm [6-1] of vibration hammer [6-2] that the end is installed in its rotating shaft [6-7], vibration spring [6-3] side connects screen box [1], the other end connects armature [6-6], and the electromagnet of solenoid [6-4] attracts the vibration of armature generation and power supply same frequency.

Described wide-meshed screen [4] bottom is equipped with middle screen cloth [14] and fine screen mesh [15] successively, the net bottom of middle screen cloth [14] and fine screen mesh [15] is provided with screen cloth support [8], in support [8] bottom rapping apparatus [6] is installed, by electromagnetic rapping device timing rapping wire side, the screening particle that is blocked in the mesh is shaken, and do not reduce sieving area; Middle screen cloth [14] and fine screen mesh [15] two ends twist in nets on the axle [5], and screen box [1] is connected with net axle [5], and the employing shaft type is rolled up net, screen cloth can be tightened to be not easy to tear.

The utlity model has following advantage:

1, the many amplitude vibration sieves of the utility model, having designed the screen cloth of different meshes under same exciting force effect can work under the various amplitude condition, promptly realize the vibratory sieve of the many amplitudes of a machine, flow process is shortened reduced production cost again, improved bolting efficient;

2, screen cloth can be provided with multistage different meshes according to the segmentation of screen size, and the volume net can make wire side smooth and tighten that stressed evenly screen cloth is not easy to break, and having overcome in the past, screen cloth lax, fracture phenomena occur after using a period of time.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is an A-A direction wide-meshed screen structural representation among Fig. 1.

Fig. 3 is the rapping apparatus structural representation.

The specific embodiment

As shown in Figure 1, screen frame 2 is installed in screen box 1, screen frame 2 connects with screen box 1 by spring 3, formed a double-mass vibrating system by screen box 1, wide-meshed screen 4 screen frames 2 and spring 3 like this, because the quality of screen box is much larger than scalping frame 2 quality, the rigidity of adjusting spring 3 is operated under the low critical Near resonance oscillating state it, and scalping frame 2 amplitudes will be far longer than the amplitude of screen box, so the scalping frame is being done the motion of opposite direction, various amplitude, same frequency.Side at screen box 1 top is provided with charging aperture 16, be provided with scalping material outlet 10-1 accordingly from top to bottom at corresponding each layer screen cloth of screen box [1] other end, middle sieve material outlet 10-2 and dusting cover material outlet 10-3, the screen box bottom is provided with lower discharge port 10,1 installs vibrator 7 on screen box, and driven by motor vibrator 7 and screen box 1 are made circle, ellipse or rectilinear motion;

As shown in Figure 2, the screen frame 2 that is positioned at screen box 1 upper strata is equipped with wide-meshed screen 4, is provided with balancing weight 9 on the net and is in suitable amplitude in order to adjust wide-meshed screen 4, and screen frame 2 both sides are connected with support 11, spring 3 compresses support 11 by screw rod 12 and lower support 13, and lower support is connected with screen box 1; Screen cloth 14 and fine screen mesh 15 during be equipped with wide-meshed screen 4 bottoms are provided with screen cloth support 8 at the net bottom of middle screen cloth 14 and fine screen mesh 15; Middle screen cloth 14 and fine screen mesh 15 two ends twist on the net axle 5, and net axle 5 is with middle fine screen mesh rolling-in and by 8 supports of screen cloth support, and screen box 1 is connected with net axle 5, and fine screen mesh and screen box 1 are done equidirectional, same amplitude, same frequency motion in making.

As shown in Figure 3, in support 8 bottoms rapping apparatus 6 is installed, the two plastid Near resonance oscillating system that rapping apparatus is made up of armature, rotating shaft, support arm, vibration hammer and vibration spring, symmetrical support arm [6-1] is installed in the rotating shaft of rapping apparatus [6-7], vibration hammer [6-2] is equipped with in its end, vibration spring [6-3] side connects screen box 1, and the other end connects armature [6-6], and the electromagnet [6-4] in the solenoid [6-5] is by magnetic attraction armature; Electromagnetic attracting force armature makes support arm action during energising, drives a side vibration hammer and moves upward and knock screen cloth [14,15], makes attached to online material and is knocked from net; Electromagnetic force disappears during outage, and the energy that the vibration spring is stored discharges, and drive opposite side vibration hammer [6-2] by rotating shaft [6-7] through support arm [6-1] and move upward this moment, and the material in knocking on the fine screen mesh makes it from net.

Claims

1, a kind of many amplitude vibration sieves, comprise screen box [1], screen frame [2], vibrator [7], support [11] and rapping apparatus [6], screen cloth is installed in screen box, described vibrator [7] is installed on the screen box, be provided with charging aperture [16] at screen box [1] top, at the corresponding classification material outlet that is provided with of corresponding each layer screen cloth of screen box [1] other end, the screen box bottom is provided with lower discharge port [10], it is characterized in that: the screen frame [2] that is positioned at screen box [1] upper strata is equipped with wide-meshed screen [4], be provided with balancing weight [9] on the net, screen frame [2] both sides are connected with support [11], and spring [3] compresses support [11] by screw rod [12] and lower support [13], and lower support [13] is connected with screen box [1]; Middle fine screen mesh is equipped with in wide-meshed screen [4] bottom, net bottom is provided with screen cloth support [8], being installed in support [8] bottom is rapping apparatus [6], it is the symmetrical support arm [6-1] of vibration hammer [6-2] that the end is installed in its rotating shaft [6-7], vibration spring [6-3] side connects screen box [1], the other end connects armature [6-6], and the electromagnet of solenoid [6-4] attracts the vibration of armature generation and power supply same frequency.

2, according to the described many amplitude vibration sieves of claim 1, it is characterized in that described wide-meshed screen [4] bottom is equipped with middle screen cloth [14] and fine screen mesh [15] successively, the net bottom of middle screen cloth [14] and fine screen mesh [15] is provided with screen cloth support [8], in support [8] bottom rapping apparatus [6] is installed.

3, according to the described many amplitude vibration sieves of claim 2, it is characterized in that middle screen cloth [14] and fine screen mesh [15] two ends twist on the net axle [5], screen box [1] is connected with net axle [5].