CN112893104A

CN112893104A - Circular vibrating screen with double-inclination-angle screen mesh

Info

Publication number: CN112893104A
Application number: CN202110311167.XA
Authority: CN
Inventors: 曹兵; 沈远海; 胡城; 张�浩; 邹宗彬; 胡昇平; 蒋丰祥; 于士峰; 赵昱罡; 兰刚; 陈克峰
Original assignee: Anhui Maanshan Iron and Steel Mining Resources Group Co Ltd; Anhui Masteel Mining Resources Group Nanshan Mining Co Ltd
Current assignee: Anhui Maanshan Iron and Steel Mining Resources Group Co Ltd; Anhui Masteel Mining Resources Group Nanshan Mining Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-06-04

Abstract

The invention discloses a circular vibrating screen with double-inclination-angle screen meshes, and relates to the technical field of circular vibrating screens. The circular vibrating screen with the double-inclination-angle screen comprises a screen body and a horizontal beam, wherein the screen body is provided with a screen, the two sides of the screen body are provided with eccentric vibration exciters, the eccentric vibration exciters are provided with damping springs, and one ends, far away from the eccentric vibration exciters, of the damping springs are fixedly arranged with front supporting legs. This circle of two inclination screens sieve that shakes, can fall most powder ore through the slope screen cloth of wide angle in advance in grades, thereby guaranteed that the slope screen cloth of wide angle does not receive the jam influence of powder ore, screening efficiency is high, it is strong to pass through powder, be applicable to the screening operation of powder ore or the great mineral of viscidity, the ore is because the screen cloth of the big inclination of inertia impact at first, most powder ore or viscidity mineral have permeated the big inclination screen cloth this moment, because the buffering effect of big inclination screen cloth is little, so the powder ore that does not see through the screen cloth still has great inertia to impact other screen cloths.

Description

Circular vibrating screen with double-inclination-angle screen mesh

Technical Field

The invention relates to the technical field of circular vibrating sieves, in particular to a circular vibrating sieve with a double-inclination-angle screen.

Background

The circular vibrating screen has a circular motion track, is mainly used for grading operation of materials in the industries of mineral separation, coal dressing, building materials, electric power and the like, and is common screening equipment at present. The vibrating screen generally comprises a screen box, a screen, a vibrator, a damping spring, a transmission device and the like, wherein the vibrator is arranged on a side plate of the screen box and is driven to rotate by a motor through a coupler to generate centrifugal inertia force to force the screen box to vibrate, so that the grading effect is achieved. In the iron ore crushing process, the important links of coarse crushing, medium crushing, fine crushing and screening are generally divided, the circular vibrating screen is used as a screening device, products on the screen enter a crusher to be crushed, and products under the screen (namely qualified products) enter the next ore dressing process.

The problems existing at present are as follows: the ore easily causes the screen cloth to block up after the circle is shaken and is sieved, and screening efficiency is low, especially meets continuous overcast and rainy weather, and the circle is shaken and is sieved simply straight unable normal production, and the post worker needs frequent to carry out long-time clearance to the sifting surface, and intensity of labour is big, and down time is long, frequently causes the ball mill to wait the ore deposit to shut down because the ore source supply is not up, has seriously restricted production.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a circular vibrating screen with double-inclination-angle screen meshes, which solves the problems that in the prior art, the screen meshes are easy to block after ores pass through the circular vibrating screen, the screening efficiency is low, particularly, in continuous rainy days, the circular vibrating screen simply cannot be normally produced, a post worker needs to frequently clean the screen faces for a long time, the labor intensity is high, the shutdown time is long, the ball mill is frequently stopped for ore due to the fact that ore sources are not supplied, and the production is severely restricted.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a circle of two inclination screen meshes sieve that shakes, includes screen frame and horizontal beam, be provided with the screen cloth on the screen frame, the both sides of screen frame all are provided with eccentric vibration exciter, be provided with damping spring on the eccentric vibration exciter, damping spring keeps away from the fixed setting of one end and preceding support leg of eccentric vibration exciter, be provided with the motor through motor support on the horizontal beam, the output of motor is provided with the belt lace wheel, be provided with big belt pulley on the screen frame, big belt pulley and belt lace wheel pass through the V belt transmission and connect, eccentric vibration exciter is fixed in the middle part of screen frame one side, and links to each other with big belt pulley, turn right from a left side between screen frame and the horizontal beam and set gradually preceding support leg and back support leg, be provided with the sieve roof beam on the screen frame, the sieve roof beam includes little inclination sieve roof beam, anti "Z" type little inclination sieve roof beam and big.

Preferably, the screen frame is upper and lower, preceding, open at the back, and the irregular trapezoid that the front end height is little, the rear end height is big, the screen frame will link to each other through the sieve roof beam in the left and right sides, the bottom front end both sides of screen frame are equipped with two preceding supporting legs, screen frame bottom rear end both sides are equipped with two back supporting legs, two preceding supporting leg and two middle part position on the back supporting leg all is equipped with damping spring, eccentric vibration exciter sets up in one side of screen frame, the screen frame is installed with certain angle with the horizontal plane, and the angle is 15 to 25.

Preferably, the sieve roof beam at small inclination is the cuboid, and the surface is evenly opened has the fixed round hole of a plurality of, the angle with the screen frame angle is the same, both ends with the screen frame both sides link to each other through the welding, pass through the bolt with the screen cloth and link to each other.

Preferably, the structure of the large-inclination-angle sieve beam is the same as that of the small-inclination-angle sieve beam, the angle of the large-inclination-angle sieve beam is 35-55 degrees to the horizontal plane, and the large-inclination-angle sieve beam is positioned above the small-inclination-angle sieve beam.

Preferably, the cross section of the reverse Z-shaped small-inclination-angle sieve beam is reverse Z-shaped, the angle of the reverse Z-shaped small-inclination-angle sieve beam is parallel to the sieve body, the upper surface and the lower surface of the reverse Z-shaped small-inclination-angle sieve beam are respectively provided with a plurality of fixed round holes which are connected with the sieve screen through bolts, and the two ends of the reverse Z-shaped small-inclination-angle sieve beam are.

Preferably, the screen is a long-strip-shaped sawtooth screen, the distance between the strips is fixed and is set to be 30-80mm, and the upper end and the lower end of the screen are respectively provided with a plurality of fixing round holes which are aligned with the fixing round holes of the screen beam.

Preferably, the horizontal beam sets up at the front leg with the bottom of back supporting leg, through the bolt fastening on the horizontal plane, the front leg is located screen frame front end both sides are used for supporting the front end of screen frame, back supporting leg is located screen frame rear end both sides are used for supporting the rear end of screen frame.

(III) advantageous effects

The invention provides a circular vibrating screen with a double-inclination-angle screen. The method has the following beneficial effects: this circle of two inclination screens sieve that shakes, can fall most powder ore through the slope screen cloth of wide angle in advance in grades, thereby guaranteed that the slope screen cloth of wide angle does not receive the jam influence of powder ore, screening efficiency is high, it is strong to pass through powder, be applicable to the screening operation of powder ore or the great mineral of viscidity, the ore is because the screen cloth of the big inclination of inertia impact at first, most powder ore or viscidity mineral have permeated the big inclination screen cloth this moment, because the buffering effect of big inclination screen cloth is little, so the powder ore that does not see through the screen cloth still has great inertia to impact other screen cloths.

Drawings

FIG. 1 is a side view of the structure of the present invention;

fig. 2 is a front view of the structure of the present invention.

In the figure: 1. a screen body; 2. a horizontal beam; 3. screening a screen; 4. a small-inclination-angle sieve beam; 5. a reverse Z-shaped small-inclination-angle sieve beam; 6. a large-inclination-angle sieve beam; 7. a damping spring; 8. a front support leg; 9. a rear support leg; 10. a motor bracket; 11. a large belt pulley; 12. a small belt pulley; 13. a V-belt; 14. a motor; 15. an eccentric vibration exciter; 16. and fixing the round hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a circular vibrating screen with double-inclination screen comprises a screen body 1 and a horizontal beam 2, wherein the horizontal beam 2 is arranged at the bottom ends of a front supporting leg 8 and a rear supporting leg 9 and is fixed on a horizontal plane through bolts, the front supporting leg 8 is arranged at two sides of the front end of the screen body 1 and is used for supporting the front end of the screen body 1, the rear supporting leg 9 is arranged at two sides of the rear end of the screen body 1 and is used for supporting the rear end of the screen body 1, the screen body 1 is provided with a screen 3, the screen 3 is a strip-shaped sawtooth screen, the distance between the strips is fixed and is set to be 30-80mm, the upper end and the lower end of the screen 3 are respectively provided with a plurality of fixing round holes 16 which are aligned with the fixing round holes 16 of the screen beam, the screen body 1 is in an irregular trapezoid shape with upper, lower, front and rear surfaces open, the front end is small in height, the rear end is large in height, the left side and the right side of the screen body 1 are connected through the screen beam, two front end and two front, damping springs 7 are arranged in the middle of two front supporting legs 8 and two rear supporting legs 9, eccentric vibration exciters 15 are arranged on one side of a screen body 1, the screen body 1 is installed at a certain angle with the horizontal plane, the angle is 15-25 degrees, eccentric vibration exciters 15 are arranged on two sides of the screen body 1, the damping springs 7 are arranged on the eccentric vibration exciters 15, one ends, far away from the eccentric vibration exciters 15, of the damping springs 7 are fixedly arranged with the front supporting legs 8, a motor 14 is arranged on a horizontal beam 2 through a motor support 10, a small belt pulley 12 is arranged at the output end of the motor 14, a large belt pulley 11 is arranged on the screen body 1, the large belt pulley 11 and the small belt pulley 12 are in transmission connection through a triangular belt 13, the eccentric vibration exciters 15 are fixed in the middle of one side of the screen body 1 and are connected with the large belt pulley 11, the front supporting legs 8 and the rear supporting legs, the screen body 1 is provided with a screen beam, the screen beam comprises a small-inclination screen beam 4, an inverse Z-shaped small-inclination screen beam 5 and a large-inclination screen beam 6, the cross section of the inverse Z-shaped small-inclination screen beam 5 is in an inverse Z shape, the angle is parallel to the screen body 1, the upper surface and the lower surface of the inverse Z-shaped small-inclination screen beam are respectively provided with a plurality of fixing round holes 16, the upper surface and the lower surface of the inverse Z-shaped small-inclination screen beam are connected with the screen cloth 3 through bolts, the two ends of the inverse Z-shaped small-inclination screen beam are connected with the screen body 1 through welding, the structure of the large-inclination screen beam 6 is the same as that of the small-inclination screen beam 4, the angle and the horizontal surface of the large-inclination screen beam 6 are located above the small-inclination screen beam 4, the small-inclination screen beam 4 is a cuboid, the surface of the.

As shown in fig. 1 and 2, the circular vibrating screen of two inclination screen cloth of this embodiment, including

screen frame

1, 1 bottom front end both sides of screen frame are equipped with respectively preceding supporting

leg

8, 1 bottom rear end both sides of screen frame are equipped with respectively back supporting leg 9, two preceding supporting leg 8 and two back supporting leg 9 intermediate position all is equipped with damping spring 7, horizontal beam 2 set up in preceding supporting leg 8 with the bottom of

back supporting leg

9, 1 one side of screen frame is equipped with eccentric vibration exciter 15, eccentric vibration exciter 15 is being connected big belt pulley 11, big belt pulley 11 with belt lace wheel 12 passes through triangular belt 13 connects, belt lace wheel 12 with motor 14 connects, motor 14 sets up motor support 10 top. The inner side of the screen body 1 is welded with the large-inclination-angle screen beam 6, the small-inclination-angle reverse Z-shaped screen beam 5 and the small-inclination-angle screen beam 4 from top to bottom respectively, the fixing circular holes 16 are distributed on two sides of the end part of the screen beam respectively, and the screen 3 is fixed on the screen beam through the fixing circular holes 16 and vibrates together with the screen body.

Specifically, the motor 14 rotates after being powered on, drives the small belt pulley 12 to rotate, and then drives the large belt pulley 11 to rotate through the triangular belt 13, so as to drive the eccentric vibration exciter 15 to vibrate, and finally, the whole screen body 1, the screen beam and the screen 3 are caused to do circular motion. When the materials fall from the upper part of the screen body 1 through the belt pulley, the materials firstly fall on the screen of the large-inclination screen beam 6, most of the powder and the qualified-granularity materials enter the next working procedure through the screen, and because the buffering effect of the large-inclination screen is small, a small part of the materials which do not penetrate through the screen still have large impact force and enter the screen of the small-inclination screen beam 4 to be continuously screened, the screening efficiency is high, and the screen is not easy to block.

The screen cloth does not have the phenomenon of blocking after being reformed, thereby completely avoiding the influence on production caused by the blocking of the screen cloth, ensuring the subsequent ore supply and greatly reducing the labor intensity of posts.

In conclusion, the circular vibrating screen with the double-inclination-angle screen can pre-grade most of fine ores through the large-angle inclined screen, so that the small-angle inclined screen is not influenced by blockage of the fine ores, the screening efficiency is high, the powder permeability is high, the circular vibrating screen is suitable for screening fine ores or minerals with large viscosity, the ores firstly impact the screen with the large inclination angle due to inertia, most of the fine ores or the minerals with large viscosity penetrate through the large-inclination-angle screen, and the fine ores which do not penetrate through the screen still have large inertia to impact other screens due to small buffering effect of the large-inclination-angle screen.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A circular vibrating screen with double-inclination-angle screen meshes comprises a screen body (1) and a horizontal beam (2), wherein the screen mesh (3) is arranged on the screen body (1), eccentric vibration exciters (15) are arranged on two sides of the screen body (1), a damping spring (7) is arranged on each eccentric vibration exciter (15), one end, far away from each eccentric vibration exciter (15), of each damping spring (7) is fixedly arranged with a front supporting leg (8), a motor (14) is arranged on the horizontal beam (2) through a motor support (10), a small belt pulley (12) is arranged at the output end of each motor (14), a large belt pulley (11) is arranged on the screen body (1), the large belt pulley (11) and the small belt pulley (12) are in transmission connection through a triangular belt (13), each eccentric vibration exciter (15) is fixed in the middle of one side of the screen body (1) and is connected with the large belt pulley (11), the method is characterized in that: turn right from a left side between screen frame (1) and horizontal beam (2) and have set gradually preceding supporting leg (8) and back supporting leg (9), be provided with the sieve roof beam on screen frame (1), the sieve roof beam includes that little inclination sieve roof beam (4), anti "Z" type little inclination sieve roof beam (5) and big inclination sieve roof beam (6).

2. The circular vibrating screen with the double-inclination-angle screen cloth as claimed in claim 1, is characterized in that: screen frame (1) is upper and lower, preceding, open at the back, and the front end height is little, the highly big irregular trapezoid of rear end, two sides will link to each other through the sieve roof beam about screen frame (1), the bottom front end both sides of screen frame (1) are equipped with two preceding supporting legs (8), screen frame (1) bottom rear end both sides are equipped with two back supporting legs (9), two preceding supporting leg (8) and two middle part position on back supporting leg (9) all is equipped with damping spring (7), eccentric vibration exciter (15) set up in one side of screen frame (1), screen frame (1) is installed with certain angle with the horizontal plane, and the angle is 15 to 25.

3. The circular vibrating screen with the double-inclination-angle screen cloth as claimed in claim 1, is characterized in that: the sieve beam with the small inclination angle (4) is a cuboid, a plurality of fixed round holes (16) are uniformly formed in the surface of the sieve beam, the angle of the sieve beam is the same as that of the sieve body (1), and the two ends of the sieve beam are connected with the two sides of the sieve body (1) through welding and connected with the sieve screen (3) through bolts. .

4. The circular vibrating screen with the double-inclination-angle screen cloth as claimed in claim 1, is characterized in that: the structure of the large-inclination-angle sieve beam (6) is the same as that of the small-inclination-angle sieve beam (4), the angle of the large-inclination-angle sieve beam and the horizontal plane is 35-55 degrees, and the large-inclination-angle sieve beam (6) is positioned above the small-inclination-angle sieve beam (4). .

5. The circular vibrating screen with the double-inclination-angle screen cloth as claimed in claim 1, is characterized in that: the cross section of the reverse Z-shaped small-inclination-angle sieve beam (5) is reverse Z-shaped, the angle of the reverse Z-shaped small-inclination-angle sieve beam is parallel to the sieve body (1), a plurality of fixing circular holes (16) are formed in the upper surface and the lower surface of the reverse Z-shaped small-inclination-angle sieve beam and connected with the sieve body (3) through bolts, and the two ends of the reverse Z-shaped small-inclination-angle sieve beam are connected with the sieve. .

6. The circular vibrating screen with the double-inclination-angle screen cloth as claimed in claim 1, is characterized in that: the screen cloth (3) is a long-strip-shaped sawtooth screen cloth, the distance between the strips is fixed and is set to be 30-80mm, and the upper end and the lower end of the screen cloth (3) are respectively provided with a plurality of fixed round holes (16) which are aligned with the fixed round holes (16) of the screen beam.

7. The circular vibrating screen with the double-inclination-angle screen cloth as claimed in claim 1, is characterized in that: horizontal beam (2) set up in front supporting leg (8) with the bottom of back supporting leg (9) through the bolt fastening on the horizontal plane, front supporting leg (8) are located screen frame (1) front end both sides are used for supporting the front end of screen frame (1), back supporting leg (9) are located screen frame (1) rear end both sides are used for supporting the rear end of screen frame (1).