CN210357987U - Ore dressing is with circle sieve that shakes - Google Patents

Abstract

The utility model discloses a circular vibrating screen for mineral separation, which belongs to the technical field of mineral separation equipment and comprises a screen box, an underframe, a damping spring, a screen, a vibrator and a first motor, wherein the cross section of the screen box is rectangular, and a baffle is arranged at the edge of the upper side of the screen box; the screen box is internally provided with a scraper which is positioned above the screen, the length of the scraper is 5-10cm shorter than the width of the screen box, the screen box also comprises a rotating shaft and a second motor, one end of the scraper is connected with the rotating shaft, the rotating shaft is positioned in the middle of the long edge of the screen box, and the rotating shaft is connected with the second motor; the filter screen is characterized by further comprising at least two filter blocking plates, wherein filter holes are uniformly formed in the filter blocking plates, the filter blocking plates are arranged along the width direction of the screen, and clamping grooves used for clamping the filter blocking plates are formed in the inner sides of the baffle plates; the utility model discloses can reduce the incidence of jam by a wide margin, show and improve screening efficiency.

Description

Ore dressing is with circle sieve that shakes

Technical Field

The utility model relates to a mineral processing equipment technical field especially relates to a ore dressing is with circle sieve that shakes.

Background

In the iron ore screening process, the general steps include coarse crushing, intermediate crushing, screening and fine crushing of raw ore. Wherein, screening process needs to adopt screening equipment, and circular vibration sieve is the screening equipment commonly used at present. The existing circular vibrating screen generally comprises a screen box, a screen mesh, a vibrator, a damping spring, an underframe and a motor and the like, wherein the screen mesh is arranged on the inner side of the screen box, the vibrator is arranged on a side plate of the screen box, the damping spring between the screen box and the underframe protects the screen box from being damaged during vibration, and the motor drives the vibrator to vibrate so as to vibrate the screen box and further vibrate the screen mesh.

However, the existing circular vibrating screen has the following problems:

the angle between the screen box and the horizontal plane, namely the gradient, cannot be too small, if the angle is too small, materials are not easy to fall below the screen mesh so as to be accumulated above the screen mesh, the materials are not uniformly distributed on the screen mesh, so that the utilization rate of the screen mesh is low, the larger problem is that screen meshes are easy to block, and particularly when the humidity of the materials is high or the viscosity is high, the machine needs to be stopped to dredge the blocked holes, so that the screening efficiency is influenced;

however, the angle between the screen box and the horizontal plane, i.e. the gradient, cannot be too large, if the angle is too large, most of the materials are accelerated to fall below the screen under the action of gravity, so that the materials are accumulated below the screen, and at the moment, the machine also needs to be stopped to transfer the accumulated materials upwards, so that the screening effect is poor, and the screening efficiency is low;

to take these factors into account, the slope of the sieve box is currently generally not more than 20 °.

That is to say, the current round sieve that shakes has the screen cloth and easily blocks up, and screening efficiency hangs down the scheduling problem.

In addition, the edge of a screen box of the traditional circular vibrating screen is close to the edge of a screen, so that materials on the screen easily fall off, especially when the materials are light or the vibration is large; the material drops and causes the waste to the material on the one hand, on the other hand also influences the operation environment.

Disclosure of Invention

An object of the utility model is to provide a ore dressing is with circle sieve that shakes to solve above-mentioned problem.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a ore dressing is with circle sieve that shakes, includes the sieve case, is used for the installation the chassis of sieve case, set up in damping spring between sieve case and the chassis, install in sieve incasement screen cloth, install in the vibrator of sieve case side and for the vibrator provides the first motor of power, its characterized in that: the cross section of the screen box is rectangular, and a baffle is arranged at the edge of the upper side of the screen box; the screen box is internally provided with a scraper which is positioned above the screen, the length of the scraper is 5-10cm shorter than the width of the screen box, the screen box also comprises a rotating shaft and a second motor, one end of the scraper is connected with the rotating shaft, the rotating shaft is positioned in the middle of the long edge of the screen box, and the rotating shaft is connected with the second motor; still include two at least fender filter plates, it has evenly seted up the filtration pore to keep off the filter plate, keep off the filter plate and follow the width direction setting of screen cloth, the baffle inboard is provided with and is used for the joint keep off the draw-in groove of filter plate.

As a preferred technical scheme: the meshes of the screen are circular. Compared with the traditional square hole, the blockage probability can be reduced.

As a preferred technical scheme: the gradient of the screen box is 35-40 degrees.

The utility model can set the gradient of the sieve box to be larger, even the gradient is larger, because the filter baffle plate is arranged in the sieve box, the speed of the material sliding downwards can be reduced, and the filter hole arranged on the filter baffle plate can leave the material with larger grain diameter at the position close to the feeding position, namely, pre-sieving is carried out on the sieve, thereby improving the sieving efficiency; in addition, as the filter blocking plate is clamped with the baffle plates at the periphery, if meshes are blocked on the screen, the second motor is started after the filter blocking plate is dismounted without stopping, the scraper starts to work, and the scraper is driven by the rotating shaft to do reciprocating motion similar to an oscillating electric fan, so that the blockage on the screen is dredged; when the scraper is not used at ordinary times, the scraper is positioned close to the baffle plate, so that the scraper and the baffle plate cannot be influenced mutually.

In addition, the lower end of the scraper is preferably provided with soft bristles, and the bristles can penetrate into the meshes of the screen mesh in the movement process of the scraper, so that the blockage removing effect is better.

Compared with the prior art, the utility model has the advantages of: the utility model discloses can also not produce the material in the sieve bottom of the case portion and pile up under the condition that improves the sieve case slope to combine the buffering and the prefiltration effect that keep off the filter plate, and the effect of striking off of scraper blade, reduced the condition of jam, thereby when guaranteeing the screening effect, improved screening efficiency, screening efficiency more traditional structure has improved more than 30%.

Drawings

Fig. 1 is a top view of an embodiment of the present invention.

In the figure: 1. a screen box; 2. screening a screen; 3. a first motor; 4. a baffle plate; 5. a squeegee; 6. a second motor; 7. a rotating shaft; 8. a first filter plate; 9; and a second filter plate.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example (b):

referring to fig. 1, a circular vibrating screen for mineral processing comprises a screen box 1, an underframe for mounting the screen box 1, a damping spring arranged between the screen box 1 and the underframe, a screen 2 mounted in the screen box 1, a vibrator mounted on the side surface of the screen box 1, and a first motor 3 for providing power for the vibrator, wherein the screen box 1, the underframe, the damping spring, the vibrator, and the like are all connected and mounted in the prior art, and for example, the mounting manners of the screen box, the frame, the spring assembly, the vibration exciter, and the like in CN205887419U can be referred to, and the structures do not relate to the invention points of the present application, so the drawings are omitted;

the cross section of the screen box 1 is rectangular, and a baffle 4 is arranged at the edge of the upper side of the screen box 1; a scraping plate 5 is arranged in the screen box 1, the scraping plate 5 is positioned above the screen 2, the length of the scraping plate 5 is 5-10cm shorter than the width of the screen box 1, the screen box further comprises a rotating shaft 7 and a second motor 6, one end of the scraping plate 5 is connected with the rotating shaft 7, the rotating shaft 7 is positioned in the middle of the long edge of the screen box 1, and the rotating shaft 7 is connected with the second motor 6; the meshes of the screen 2 are circular;

the gradient of the sieve box is 35-45 degrees;

the filter screen is characterized by further comprising a first filter blocking plate 8 and a second filter blocking plate 9, wherein the height of the first filter blocking plate 8 and the height of the second filter blocking plate 9 are 8cm, filter holes are uniformly formed in the first filter blocking plate 8 and the second filter blocking plate 9, the diameter of each filter hole is 6cm, the first filter blocking plate 8 and the second filter blocking plate 9 are arranged along the width direction of the screen, and a clamping groove for clamping the first filter blocking plate 8 and the second filter blocking plate 9 is formed in the inner side of the baffle 4; the direction of the clamping groove can be vertical to the screen 2, and can also be inclined towards the direction of a material inlet in principle, namely inclined towards the direction under the gradient;

the slope of the screen box can be set to be larger, even if the slope is larger, the speed of downward sliding of the materials can be reduced due to the fact that the filter blocking plate is arranged in the screen box, and the materials with larger particle sizes can be reserved at the position close to the feeding position firstly due to the filter holes formed in the filter blocking plate, namely, pre-screening is carried out on the screen, and therefore screening efficiency is improved; in addition, because the filter blocking plate is clamped with the baffle plates at the periphery, if meshes are blocked on the screen 2, the filter blocking plate can be dismounted without stopping the machine, the second motor is started, the scraper 5 starts to work, and the scraper 5 is driven by the rotating shaft 7 to do reciprocating motion similar to an oscillating electric fan, so that the blockage on the screen 2 is dredged; when the scraper 5 is not used at ordinary times, the scraper is positioned at a position close to the baffle 4;

furthermore, by modifying the mesh of the screen 2 to be circular, the chance of plugging is reduced by at least 10% relative to a conventional square hole.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (3)

1. The utility model provides a ore dressing is with circle sieve that shakes, includes the sieve case, is used for the installation the chassis of sieve case, set up in damping spring between sieve case and the chassis, install in sieve incasement screen cloth, install in the vibrator of sieve case side and for the vibrator provides the first motor of power, its characterized in that: the cross section of the screen box is rectangular, and a baffle is arranged at the edge of the upper side of the screen box; the screen box is internally provided with a scraper which is positioned above the screen, the length of the scraper is 5-10cm shorter than the width of the screen box, the screen box also comprises a rotating shaft and a second motor, one end of the scraper is connected with the rotating shaft, the rotating shaft is positioned in the middle of the long edge of the screen box, and the rotating shaft is connected with the second motor; still include two at least fender filter plates, it has evenly seted up the filtration pore to keep off the filter plate, keep off the filter plate and follow the width direction setting of screen cloth, the baffle inboard is provided with and is used for the joint keep off the draw-in groove of filter plate.

2. The circular vibrating screen for mineral separation according to claim 1, characterized in that: the meshes of the screen are circular.

3. The circular vibrating screen for mineral separation according to claim 1, characterized in that: the gradient of the screen box is 35-40 degrees.

Images