CN103394460A

CN103394460A - Vibrating screen

Info

Publication number: CN103394460A
Application number: CN2013103256852A
Authority: CN
Inventors: 蒋学德; 张流云; 李亿霞
Original assignee: CHONGQIANG CHANGBO MINERALS Co Ltd
Current assignee: CHONGQIANG CHANGBO MINERALS Co Ltd
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2013-11-20
Anticipated expiration: 2033-07-31
Also published as: CN103394460B

Abstract

The invention discloses a vibrating screen which comprises a screening box, screening nets positioned inside the screening box, a spindle fixed on the screening box, vibration exciters mounted on the spindle and rotating with the spindle, a coupler and a motor. The coupler and the motor are connected with the spindle sequentially. Each vibration exciter is composed of two discs. A through hole and more than two small holes are formed in each disc. The through holes are sleeved on the spindle and are not concentric with corresponding discs. The small holes have different disc center distances. The two discs are detachably connected through small holes with the same disc center distances. Different eccentric weights, namely different amplitudes, of each vibration exciter can be realized through connection of the small holes, with different center distances, of the two discs. In addition, the coupler comprises two half-couplers and a circular-arc-shaped elastic body connected with the half-couplers, the elastic body can compensate axial displacement of the coupler, and the vibrating screen is long in service life; a water spraying device is arranged at the top of the screening box, so that screen meshes can be prevented from being blocked, and screening speed of materials can be increased.

Description

Vibratory sieve

Technical field

The present invention relates to a kind of separator, particularly a kind of vibratory sieve.

Background technology

Vibratory sieve mainly comprises motor, screen box, vibrator, resiliency supported etc., motor through V-belt or shaft coupling make the vibrator eccentric block produce High Rotation Speed, the eccentric block of running produces centrifugal force, excite screen box to produce the motion of certain amplitude, on-the-sieve material is subject to the momentum that screen box passes to and produces continuous sling movement on the compass screen surface that tilts, in the process that material and compass screen surface meet, make thoroughly to sieve less than the particle of sieve aperture, thereby realize classification.Existing vibratory sieve amplitude can not conveniently be regulated, and for obtaining various amplitude, need to change the weight of vibrator eccentric block, and is each like this in the situation that need various amplitude all to need to install the eccentric block of different eccentric weight, inconvenient operation.

Summary of the invention

In view of this, the invention provides a kind of vibratory sieve, its amplitude facilitates adjustable.

The present invention solves the problems of the technologies described above by following technological means:

Vibratory sieve of the present invention, comprise screen box, be positioned at the screen cloth of screen box inside, shaft coupling and the motor that traverses screen box the main shaft that is rotatably assorted with screen box, is arranged on the vibrator that rotates with main shaft on main shaft, is connected successively with main shaft, described vibrator is two disks, disk be provided be placed on main shaft and with the through hole of disk decentraction and at least two with disc centre apart from different aperture, between two disks by with disc centre apart from detachable connection of aperture that equates.

Further, described vibrator is two, lays respectively at the main shaft two ends.

Further, described shaft coupling comprises two half a couplers and is connected between two half a couplers the elastomer for transmitting torque, described half a coupler comprises axle sleeve and pressure ring, axle sleeve one end is provided with flange, and the pressure ring of two half a couplers is pressed in elastomeric two ends respectively on axle sleeve flange separately and is bolted.

Further, described elastomer is bent into the arc top along the radially outer arc of main shaft by the Rectangular Elastic sheet, and described elastomer is two or more, and is uniformly distributed in the circumferential direction of the circle.

Further, described screen cloth is double-layer structure, and the bottom screen cloth is fixed on screen box, and on upper sieve network arrangements and bottom screen cloth and detachable, the order numerical value of upper strata screen cloth is less than the order numerical value of bottom screen cloth.

Further, in the middle of described upper strata screen cloth and bottom screen cloth, plastic mesh is set, plastic screen mesh number is between upper strata screen cloth and bottom screen cloth.

Further, the described flushometer that is positioned at the screen box top that also comprises, this flushometer comprise the shower of vertically arranging along screen box, on shower, have the aperture of a plurality of water spraying directions towards screen cloth.

Further, described shower is at least two, and along the horizontal also column distribution of screen box.

Further, described screen box both sides are provided with spring supporting device, and this spring supporting device comprises the spring on base and base, screen box by spring supporting on base.

Beneficial effect of the present invention: vibratory sieve of the present invention, comprise screen box, be positioned at the screen cloth of screen box inside, shaft coupling and the motor that traverses screen box the main shaft that is rotatably assorted with screen box, is arranged on the vibrator that rotates with main shaft on main shaft, is connected successively with main shaft, described vibrator is two disks, disk be provided be placed in main shaft and with the through hole of disk decentraction and at least two with disc centre apart from different aperture, between two disks by with disc centre apart from detachable connection of aperture that equates.The aperture of the different centre-to-centre spacing of two disks is connected and can realizes that the different eccentric weight of vibrator is different amplitude.In addition, shaft coupling comprises two half a couplers and the arc-shaped elastic body that is connected with two half a couplers, and axis shift, long service life appear in elastomer in the time of can meeting shaft coupling work.

The accompanying drawing explanation

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is perspective view of the present invention;

Fig. 2 is front view of the present invention;

Fig. 3 is the perspective view of polarizer in the present invention;

Fig. 4 is the perspective view of polarizer shaft coupling in the present invention;

Fig. 5 is the structural representation of screen cloth in the present invention;

Fig. 6 is the A place partial enlarged view of Fig. 1;

Fig. 7 is the B place partial enlarged view of Fig. 1.

The specific embodiment

the present invention is described in detail below with reference to accompanying drawing, as shown in the figure: vibratory sieve of the present invention, comprise screen box, be positioned at the screen cloth 3 of screen box inside, the main shaft that traverses screen box and be rotatably assorted with screen box, be arranged on the vibrator 1 that rotates with main shaft on main shaft, the shaft coupling 2 and the motor that are connected successively with main shaft, described vibrator is two disk 1a, disk be provided be placed on main shaft and with the through hole 1b of disk decentraction and at least two with disc centre apart from different aperture 1c, between two disks, by the aperture with the disc centre distance equates, with bolt 1d, be connected, while needing to adjust the vibratory sieve amplitude, two disks are connected and get final product by different apertures.

As further improvement in the technical proposal, described vibrator is two, lays respectively at the main shaft two ends, vibrates more evenly, can prevent effectively that the phenomenon such as main shaft eccentric wear from producing, the service life of extension device.

As further improvement in the technical proposal, described shaft coupling comprises two half a couplers and is connected between two half a couplers the elastomer 2a for transmitting torque, described half a coupler comprises axle sleeve 2b and pressure ring 2c, axle sleeve one end is provided with flange, and the pressure ring of two half a couplers is pressed in elastomeric two ends respectively on axle sleeve flange separately and by bolt 2d and connects.Elastomer can compensate the axial displacement between two-semiaxle, simultaneously, also makes to form and be flexible coupling between the main shaft of motor and vibration, and while avoiding vibratory sieve work, motor suffers damage.

As further improvement in the technical proposal, described elastomer is bent into the arc top along the radially outer arc of main shaft by the Rectangular Elastic sheet, and described elastomer is two or more, and is uniformly distributed in the circumferential direction of the circle, the axial displacement compensation effect is better, and transferable moment of torsion increases greatly.

As further improvement in the technical proposal, described screen cloth is the double layer of metal structure, and bottom screen cloth 3a is fixed on screen box, upper strata screen cloth 3b arrange with the bottom screen cloth on and detachable, the upper strata sieve number is greater than the bottom sieve number, according to the upper strata screen cloth of the replaceable different meshes of difference screening thing.

As further improvement in the technical proposal, plastic mesh 3c is set in the middle of described upper strata screen cloth and bottom screen cloth, plastic screen mesh number is between upper strata screen cloth and bottom screen cloth, middle plastic mesh can be avoided the friction between upper strata screen cloth and bottom screen cloth, extend the service life of screen cloth, improve screening effect.

As further improvement in the technical proposal, the described flushometer 4 that is positioned at the screen box top that also comprises, this flushometer comprises the shower 4a that arranges along the material direction of advance, shower is fixed by pipe clamp 4c, on shower, has the aperture 4b of a plurality of water spraying directions towards screen cloth, and aperture is sprayed water to screen cloth, avoid sieving thing and stop up sieve aperture, and the flow behavior of increase material, improve screening thing movement velocity, improve screening efficiency.

As further improvement in the technical proposal, described shower is at least two, and along the horizontal also column distribution of screen box, the multizone bath, effect is better.

As further improvement in the technical proposal, described screen box both sides are provided with spring supporting device, and this spring supporting device comprises the spring 5b on base 5a and base, and screen box is supported on base 5a by spring 5b, spring can be avoided the rigid collision between screen box and base, plays cushioning effect.

Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of invention technical scheme, it all should be encompassed in the middle of the claim scope of invention.

Claims

1. vibratory sieve, comprise screen box, be positioned at the screen cloth (3) of screen box inside, shaft coupling (2) and the motor that traverses screen box the main shaft that is rotatably assorted with screen box, is arranged on the vibrator (1) that rotates with main shaft on main shaft, is connected successively with main shaft, it is characterized in that: described vibrator is two disks (1a), disk be provided be placed in main shaft and with the through hole (1b) of disk decentraction and at least two with disc centre apart from different aperture (1c), between two disks by with disc centre apart from detachable connection of aperture that equates.

2. vibratory sieve according to claim 1, it is characterized in that: described vibrator is two, lays respectively at the main shaft two ends.

3. vibratory sieve according to claim 2, it is characterized in that: described shaft coupling comprises two half a couplers and is connected between two half a couplers the elastomer (2a) for transmitting torque, described half a coupler comprises axle sleeve (2b) and pressure ring (2c), axle sleeve one end is provided with flange, and the pressure ring of two half a couplers is pressed in elastomeric two ends respectively on axle sleeve flange separately and by bolt (2d) and connects.

4. vibratory sieve according to claim 3 is characterized in that: described elastomer is bent into the arc top along the radially outer arc of main shaft by the Rectangular Elastic sheet, and described elastomer is two or more, and is uniformly distributed in the circumferential direction of the circle.

5. vibratory sieve according to claim 4, it is characterized in that: described screen cloth is double-layer structure, bottom screen cloth (3a) is fixed on screen box, upper strata screen cloth (3b) arrange with the bottom screen cloth on and detachable, the order numerical value of upper strata screen cloth is less than the order numerical value of bottom screen cloth.

6. vibratory sieve according to claim 5 is characterized in that: in the middle of described upper strata screen cloth and bottom screen cloth, plastic mesh (3c) is set, plastic screen mesh number is between upper strata screen cloth and bottom screen cloth.

7. vibratory sieve according to claim 6, it is characterized in that: the described flushometer (4) that is positioned at the screen box top that also comprises, this flushometer comprises the shower (4a) of vertically arranging along screen box, on shower, has the aperture (4b) of a plurality of water spraying directions towards screen cloth.

8. vibratory sieve according to claim 7, it is characterized in that: described shower (4a) is at least two, and along screen box laterally and column distribution.

9. vibratory sieve according to claim 8, it is characterized in that: described screen box both sides are provided with spring supporting device, this spring supporting device comprises the spring (5b) on base (5a) and base, screen box by spring supporting on base.