CN203124260U

CN203124260U - Multistage linear screening machine

Info

Publication number: CN203124260U
Application number: CN 201320119793
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: 2013-08-14
Anticipated expiration: 2023-03-15

Abstract

The utility model discloses a multistage linear screening machine which comprises a screen device and a vibrating device both arranged on a frame. The vibrating device comprises a vibrating mechanism which is driven by a vibrating motor through a primary pulley. The vibrating mechanism comprises a rotary shaft and two vibrating wheels, and the vibrating wheels are fixedly connected with the rotary shaft in an eccentric manner, are different in eccentricity and have an included angle larger than or equal to 120 DEG and smaller than 180 DEG in the eccentric direction. The screen device comprises a screen box and a screen disposed on the screen box. The screen box is inclined, a feed hole is arranged at a high position of the screen box, and a discharge hole is arranged a low position of the screen box. The multistage linear screening machine has the advantages th number of vibrating motors is reduced, the structure of the vibrating mechanism is simplified, complexity of the multistage linear screening machine is reduced, the performance of the multistage linear screening machine is better, and the multistage linear screening machine is simpler to produce and lower in cost.

Description

The multistage linear screening machine

(1) technical field:

The utility model relates to screening installation, is a kind of multistage linear screening machine specifically.

(2) background technology:

The main type 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 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, revolves the sieve that shakes, excitation type vibratory sieve, ternary revolve the sieve that shakes, variant-frequency vibration sieve, 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, material is thrown on screen cloth, while is moving linearly forward, material enters the charging aperture of screening machine equably from batcher, by the multilayer screen cloth produce several specifications oversize, screenings, discharge from outlet separately respectively.

Described vibrating motor is that two motor synchronous are oppositely 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 finishes the material screening operation.

(3) utility model content:

The utility model provides vibrating motor of a kind of need and has satisfied the multistage linear screening machine of instructions for use.

Can realize the multistage linear screening machine of above-mentioned requirements, be included in the mesh screen device and the vibrating device that arrange on the 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 off-centre are connected, the different settings of the key elements such as weight, offset and eccentric direction by vibrating wheels make vibrating wheels form non-dynamic balancing relation at turning cylinder.

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

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

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 180 ° the scope.

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 then is connected with turning cylinder is coaxial, and described drive pulley is connected by driving belt with driven pulley.

Described mesh screen device comprises screen box and the screen cloth of being located on the 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 the frame by shock-absorbing spring.

Advantage of the present utility model:

The utility model multistage linear screening machine 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 a kind of embodiment of the utility model.

Fig. 2 is the vertical 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 the technical solution of the utility model is described further:

The utility model multistage linear screening machine comprises mesh screen device and vibrating device, described mesh screen device 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, the identical vibrating wheels 11 with two of turning cylinder 10 constitutes, the identical vibrating wheels with two of described turning cylinder 10 11 forms 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 fixedlyed 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, less than 180 ° angle, the vibrating grid 1 in two vibrating wheels, 11 left sides is provided with balanced controls 9 more than or equal to 120 ° in the eccentric direction formation of two vibrating wheels 11; Described vibrating motor 5 is in the low level setting, the drive pulley 12(small belt pulley of the coaxial fixedly connected one-level pulley decelerates of the output shaft of vibrating motor 5 mechanism), the driven pulley 13(big belt pulley of one-level pulley decelerates mechanism) coaxial fixedly connected turning cylinder 10, described drive pulley 12 is connected by driving belt 6 with driven pulley 13, as shown in Figure 1 and Figure 2.

Described mesh screen device 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-excited oscillation framves 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 of screen box 2 arranges a plurality of discharging openings 8 at interval, and each discharging opening 8 position is 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 mesh screen device and the vibrating device that arrange on the 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) off-centre, and forms non-dynamic balancing relation at 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 non-radial symmetric of eccentric direction.

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. according to any described multistage linear screening machine in the 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) then with coaxial being connected of turning cylinder (10), described drive pulley (12) is connected by driving belt (6) with driven pulley (13).

5. according to any described multistage linear screening machine in the claim 1～3, it is characterized in that: described mesh screen device comprises screen box (2) and is located at screen cloth (4) on the 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 the frame by shock-absorbing spring (7).