CN103128050A

CN103128050A - Multistage linear screening machine

Info

Publication number: CN103128050A
Application number: CN2013100837929A
Authority: CN
Inventors: 许永德
Original assignee: DONGXING YICHENG FOOD DEVELOPMENT Co Ltd
Current assignee: DONGXING YICHENG FOOD DEVELOPMENT Co Ltd
Priority date: 2013-03-15
Filing date: 2013-03-15
Publication date: 2013-06-05

Abstract

The invention discloses a multistage linear screening machine which comprises a mesh screening device and a vibration device which are arranged on a rack. The vibration device comprises a vibration mechanism which is driven by vibration motors through a first level belt wheel reducing mechanism, and the vibration mechanism comprises a rotating shaft and two vibration wheels. The vibration wheels are fixedly connected with the rotating shaft in an eccentric mode, and the two vibration wheels are the same in eccentricity. Included angles of the two vibration wheels are larger than or equal to 120 degrees or smaller than 180 degrees in the eccentric direction. The mesh screening device comprises a screening box and a screening mesh on the screening box, and the screening box is arranged in an inclined mode. A feed inlet is arranged on the higher position of the screening box, and a discharge outlet is arranged on a lower position of the screening box. The multistage linear screening machine reduces the number of the vibration motors, simplifies the structure of the vibration mechanism so as to reduce the complexity of the whole machine, is good in performance, simple and convenient to manufacture, and low in cost.

Description

The multistage linear screening machine

(1) technical field:

The present invention relates to screening installation, is a kind of multistage linear screening machine specifically.

(2) background technology:

The main Types of screening installation is vibratory sieve, and vibratory sieve is to utilize answering that the oscillator exciting produces to revolve type vibration and work, is widely used in the industries such as mine, coal, smelting, building materials, refractory material, light industry, chemical industry.

Vibratory sieve mainly is divided into linear vibrating screen, high frequency shale shaker, circular shale shaker, spin vibration sieve, excitation type vibratory sieve, ternary spin vibration sieve, variable frequency vibration screen, probability linear vibrating screen, circularoscillations sieve, elastic arm formula vibratory sieve etc.

Wherein commonly used with linear vibrating screen.

The linear vibrating screen of prior art utilizes the vibrating motor exciting as vibration source, make material tossed on screen cloth, while is moving linearly forward, material enters the charging aperture of screening machine equably from batcher, produce the oversize, screenings of several specifications, discharge from outlet separately respectively by multilayer screen cloth.

Described vibrating motor is that two motor synchronous backwards are placed, and makes vibrator produce reverse exciting force, forces sieve nest to drive screen cloth and does lengthwise movement, makes its surperficial material be subjected to exciting force and the range of periodically dishing out forward, thereby completes the material screening operation.

(3) summary of the invention:

The invention provides vibrating motor of a kind of need and satisfy the multistage linear screening machine of instructions for use.

Can realize the multistage linear screening machine of above-mentioned requirements, be included in the screen apparatus and the vibrating device that arrange on frame, with the prior art difference be that described vibrating device comprises the vibrating mechanism that is driven by transmission mechanism by vibrating motor, described vibrating mechanism comprises turning cylinder and at least two vibrating wheels, described vibrating wheels and turning cylinder bias are connected, the difference setting of the key elements such as weight, offset and eccentric direction by vibrating wheels makes vibrating wheels form non-dynamic balancing relation on turning cylinder.

In said structure, vibrating motor drives turning cylinder rotation by transmission mechanism, because the rotation imbalance of turning cylinder provides vibration source, causes body vibration and the sieve of realizing shaking.

Conventionally select two identical vibrating wheels, the offset of two vibrating wheels is identical, and the eccentric direction Non-radial symmetric.

For realizing high-frequency excitation, the angle of two vibrating wheels eccentric directions should be chosen in more than or equal to 120 ° less than in the scope of 180 °.

Described transmission mechanism adopts one-level pulley decelerates mechanism usually, and drive pulley wherein is connected with the output shaft of vibrating motor is coaxial, and driven pulley is connected with turning cylinder is coaxial, and described drive pulley is connected by driving belt with driven pulley.

Described screen apparatus comprises screen box and the screen cloth of being located on screen box, and described screen box is obliquely installed, and charging aperture is located at the eminence of screen box, and discharging opening is located at the lower of screen box.

For obtaining the material that sieves of variable grain size, described screen cloth is the sandwich construction of different meshes, and described discharging opening arranges a plurality of, and each discharging opening corresponds respectively to the screen cloth of diverse location.

Described screen box is installed on frame by shock-absorbing spring.

Advantage of the present invention:

Multistage linear screening machine of the present invention has reduced the quantity of vibrating motor, has simplified the structure of vibrating mechanism, thereby has reduced the complexity of complete machine, and more excellent performance is made easylier, and cost is cheaper.

(4) description of drawings:

Fig. 1 is the structural representation of one embodiment of the present invention.

Fig. 2 is the top view of Fig. 1 embodiment.

Figure number sign: 1, vibrating grid; 2, screen box; 3, tank tower; 4, screen cloth; 5, vibrating motor; 6, driving belt; 7, damping spring; 8, discharging opening; 9, balanced controls; 10, turning cylinder; 11, vibrating wheels; 12, drive pulley; 13, driven pulley.

(5) specific embodiment:

Below in conjunction with accompanying drawing, technical scheme of the present invention is described further:

Multistage linear screening machine of the present invention comprises screen apparatus and vibrating device, described screen apparatus is located on the tilting tank tower in right side 3, described vibrating device is located at square vibrating grid 1 inside, left side, the be connected in one frame of constitution equipment of described tank tower 3 and vibrating grid 1, as shown in Figure 1 and Figure 2.

described vibrating device is mainly by vibrating motor 5, one-level pulley decelerates mechanism, turning cylinder 10 and two identical vibrating wheels 11 consist of, described turning cylinder 10 and two identical vibrating wheels 11 form vibrating mechanisms and in high position setting, the two ends of turning cylinder 10 are by the bearing position horizontal support of vibrating grid 1 both sides, two vibrating wheels 11 are fixedly connected with turning cylinder 10, the center of circle of two vibrating wheels 11 is departed from center of rotation and is formed identical offset, the eccentric direction of two vibrating wheels 11 forms more than or equal to 120 ° the angle less than 180 °, the vibrating grid 1 in two vibrating wheels 11 left sides is provided with balanced controls 9, described vibrating motor 5 is in the low level setting, the coaxial drive pulley 12(small belt pulley that is fixedly connected with one-level pulley decelerates mechanism of the output shaft of vibrating motor 5), the driven pulley 13(big belt pulley of one-level pulley decelerates mechanism) the coaxial turning cylinder 10 that is fixedly connected with, described drive pulley 12 is connected by driving belt 6 with driven pulley 13, as shown in Figure 1 and Figure 2.

Described screen apparatus is made of screen box 2 and screen cloth 4, described screen box 2 is installed on the loxosis of tank tower 3 by damping spring 7, screen box 3 self-vibration moving frame 1 one side direction opposite sides are tilted, multilayer screen cloth 4 is laid on screen box 2, the eminence of screen box 2 arranges charging aperture, the lower interval of screen box 2 arranges a plurality of discharging openings 8, and each discharging opening 8 positions are corresponding to the screen cloth 4 of different layers, as shown in Figure 1 and Figure 2.

Claims

1. multistage linear screening machine, be included in the screen apparatus and the vibrating device that arrange on frame, it is characterized in that: described vibrating device comprises the vibrating mechanism that is driven by transmission mechanism by vibrating motor (5), described vibrating mechanism comprises turning cylinder (10) and at least two vibrating wheels (11), described vibrating wheels (11) is connected with turning cylinder (10) bias, and in the non-dynamic balancing relation of the upper formation of turning cylinder (10).

2. multistage linear screening machine according to claim 1 is characterized in that: described vibrating wheels (11) is identical two, and the offset of two vibrating wheels (11) is identical, and the eccentric direction Non-radial symmetric.

3. multistage linear screening machine according to claim 2, it is characterized in that: the angle of two vibrating wheels (11) eccentric direction is less than 180 ° more than or equal to 120 °.

4. any described multistage linear screening machine according to claim 1～3, it is characterized in that: described transmission mechanism is one-level pulley decelerates mechanism, coaxial being connected of output shaft of drive pulley wherein (12) and vibrating motor (5), driven pulley (13) with coaxial being connected of turning cylinder (10), described drive pulley (12) is connected by driving belt (6) with driven pulley (13).

5. any described multistage linear screening machine according to claim 1～3, it is characterized in that: described screen apparatus comprises screen box (2) and is located at screen cloth (4) on screen box (2), described screen box (2) is obliquely installed, charging aperture is located at the eminence of screen box (2), and discharging opening (8) is located at the lower of screen box (2).

6. multistage linear screening machine according to claim 5, it is characterized in that: described screen cloth (4) is the multilayer of different meshes, and described discharging opening (8) arranges a plurality of, and each discharging opening (8) corresponds respectively to the screen cloth (4) of diverse location.

7. multistage linear screening machine according to claim 5, it is characterized in that: described screen box (2) is installed on frame by shock-absorbing spring (7).