CN213255666U - Screen box of circular vibrating screen - Google Patents

Abstract

A sieve box of a circular vibrating sieve is used for solving the problems of uneven material distribution of the sieve box, overlong ore retention time and high replacement cost of a sieve screen, and comprises a box body, a buffer frame, a flow guide structure, a sieve screen group and a material collecting groove; the box slope is fixed on the buffer frame, the box top is equipped with the feed inlet, the box bottom surface is equipped with the opening, the water conservancy diversion structure sets up on the feed inlet, the water conservancy diversion structure includes square funnel, water conservancy diversion room and reposition of redundant personnel post, the screen cloth group includes slide rail structure, impact screen cloth, coarse screen cloth, middle level screen cloth and fine mesh, the utility model discloses can effectively shunt the ore, fully improve the utilization ratio of screen cloth, through the screen cloth group, can effectively reduce ore detention time, reduce the circle and shake the sieve load, reduce the screen cloth replacement cost.

Description

Screen box of circular vibrating screen

Technical Field

The utility model relates to an ore processing field especially relates to a sieve case of circle sieve that shakes.

Background

The circular vibrating screen is a screening device widely applied to ore screening, and through vibration, ores continuously move on a screen surface, and smaller ores can pass through screen holes, so that the ores are screened. When ores enter the circular vibrating screen, the feeding belt often deviates and the hopper accumulates mud, so that the material distribution is uneven, the screen on one side is overloaded seriously, and the screen on the other side runs almost in no-load. The existing circular vibrating screen has the problems that the ore moves on the screen at too low speed and the retention time is too long, so that the ore in the screen area is too much, the load of the circular vibrating screen is too large, and a series of faults are generated. The screen mesh on the lower side of the feed port is impacted by ore for a long time, the amount of ore faced is large, so that the screen mesh is seriously abraded, the whole screen mesh needs to be replaced, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, according to the utility model discloses an embodiment provides a circle sieve case of shaking sieve, has solved the circle and has shaken the sieve and divided the material problem that material is uneven, ore detention time overlength and screen cloth replacement cost are high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a screen box of a circular vibrating screen comprises a box body, a buffer frame, a flow guide structure and a screen group;

the box body is obliquely fixed on the buffer frame, a feed inlet is formed in the top of the box body, and an opening is formed in the bottom surface of the box body;

the flow guide structure is arranged on the feeding hole and comprises a square funnel, a flow guide chamber and at least four flow distribution columns, and the flow guide chamber is divided into a plurality of blanking channels by the flow distribution columns along the conveying direction of fed ore;

the screen mesh group comprises a sliding rail structure, an impact screen mesh, a coarse screen mesh, a middle screen mesh and a fine screen mesh, wherein fixing frames are arranged on the lower sides of the coarse screen mesh, the middle screen mesh and the fine screen mesh and are obliquely fixed on the inner wall of the box body through the fixing frames;

the impact screen is arranged on the lower side of the feeding hole, the lower end of the impact screen is lapped on the upper end of the coarse screen, the middle screen is arranged on the lower sides of the impact screen and the coarse screen, the fine screen is arranged in an opening in the bottom surface of the box body, and the screen group is parallel to the bottom surface of the box body;

the sieve meshes of the impact screen and the coarse screen are strip-shaped sieve meshes, and the middle section of the middle layer screen is provided with a smooth plane so as to reduce the friction force of the screen to the ore.

The ore is uniformly distributed on the screen as far as possible through the diversion structure, so that the utilization rate of the screen is improved, and the ore screening efficiency is improved. The long-strip-shaped sieve mesh friction force impacting the screen and the coarse screen is small, large ores can be quickly separated out and guided out to be circularly vibrated, and when the ores pass through the smooth plane with the extremely small middle section friction force of the middle layer screen, a certain rolling speed can be increased, the detention time on the screen is shortened, and therefore the load of the circularly vibrated sieve is reduced. When the circular vibrating screen works, the abrasion degree of the impact screen is maximum, and the impact screen can be replaced independently through the slide rail structure.

The utility model discloses can effectively shunt the ore, fully improve the utilization ratio of screen cloth, through the screen cloth group, can effectively reduce ore detention time, reduce the circle and shake sieve the load, reduce the screen cloth replacement cost.

Drawings

FIG. 1 is a schematic view of a sieve box of an embodiment.

FIG. 2 is a schematic diagram of a middle layer screen of an embodiment.

Fig. 3 is a schematic view of a limiting device in the embodiment.

In the above drawings: 1. a box body; 2. a buffer frame; 3. a material collecting port; 4. a feed inlet; 5. a discharge port; 6. a square funnel; 7. a flow guide chamber; 8. a flow-dividing column; 9. impacting the screen; 10. coarse screening; 11. a middle layer screen mesh; 12. a fine screen; 13. a fixed mount; 14. a limiting slide rail; 15. a limiting device; 16. the shaft is vibrated.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1, a sieve box of a circular vibrating sieve comprises a box body 1, a buffer frame 2, a flow guide structure and a sieve net group; the box body 1 is obliquely fixed on the buffer frame 2, a feed port 4 is formed in the top of the box body 1, and an opening is formed in the bottom surface of the box body 1; the water conservancy diversion structure sets up on feed inlet 4, the water conservancy diversion structure includes square funnel 6, diversion chamber 7 and four at least reposition of redundant personnel posts 8, many reposition of redundant personnel posts 8 divide into a plurality of unloading passageways with diversion chamber 7 along the direction of delivery of feeding ore.

After the ore got into the water conservancy diversion structure, gather together the ore by square funnel 6, can realize the reposition of redundant personnel to the ore to a certain extent through many reposition of redundant personnel posts 8, make the ore evenly distributed as far as possible on the screen cloth.

As shown in fig. 1-3, the screen set includes a slide rail structure, an impact screen 9, a coarse screen 10, a middle screen 11 and a fine screen 12, wherein the lower sides of the coarse screen 10, the middle screen 11 and the fine screen 12 are respectively provided with a fixing frame 13 and are obliquely fixed on the inner wall of the box body 1 through the fixing frame 13, the lower side of the impact screen 9 is also provided with the fixing frame 13 and is slidably connected with the slide rail structure through the fixing frame 13, and the slide rail structure is obliquely fixed on the inner wall of the box body 1; the impact screen 9 is arranged on the lower side of the feeding hole 4, the lower end of the impact screen 9 is lapped on the upper end of the coarse screen 10, the middle screen 11 is arranged on the lower sides of the impact screen 9 and the coarse screen 10, the fine screen 12 is arranged in an opening in the bottom surface of the box body 1, and the screen group is parallel to the bottom surface of the box body 1.

As shown in fig. 1-2, the holes of the impact screen 9 and the coarse screen 10 are elongated holes, and the middle section of the middle screen 11 is provided with a smooth plane for reducing the friction force of the screens to the ore. Because the first screen, impact screen 9 and coarse screen 10, face the greatest amount of ore, impact screen 9 and coarse screen 10 only need to separate out the majority of the oversized ore. Compare in ordinary sieve mesh, the sieve mesh of rectangular shape is less to the frictional force of ore, and the percent of pass of less ore is high, and great ore landing is fast, can effectively avoid piling up of ore. Similarly, because the impact screen 9 and the coarse screen 10 face the largest amount of ores, the impact screen 9 is directly impacted by all the ores, and the abrasion caused by the impact screen 9 is larger than that of other screens, so that the service life of the screen box can be greatly prolonged only by replacing the impact screen 9 alone, and the impact screen 9 is installed through a sliding rail structure, and the impact screen 9 is convenient to replace. The fixing frame 13 is used for reinforcing the screen, and reduces deformation of the screen by sharing stress. After the impact screen 9, the coarse screen 10 and the upper half section screen of the middle screen 11 are screened, the larger ore accounts for a higher ratio in the remaining ores of the middle screen 11, and the ore amount of the middle screen 11 is larger than that of the fine screen 12, so that the moving speed of the remaining ores is increased through a smooth plane, and the retention time of the ores is reduced.

As shown in fig. 1, the side wall of the box body 1 corresponding to the lower ends of the coarse screen 10, the middle screen 11 and the fine screen 12 is provided with a discharge port 5, the lower side of the box body 1 is provided with a collecting trough, and the collecting trough is provided with a collecting port 3. The ore through the screening is finally collected through the material collecting port 3, and the ore that does not pass through the screening just falls the conveyer belt that corresponds from discharge gate 5 and delivers to other ore crushing device and carries out the regrinding, also can set up three conveyer belt respectively and at discharge gate 5 three screen cloth that correspond, can collect the ore of equidimension not according to different demands.

As shown in fig. 3, the slide rail structure includes a limiting slide rail 14 and a limiting device 15, the impact screen 9 can slide on the limiting slide rail 14, an opening for the impact screen 9 to slide into is formed at the lower end of the limiting slide rail 14, the limiting device 15 is fixed at the opening of the limiting slide rail 14, and the limiting device 15 is used for fixing the fixing frame 13 of the impact screen 9 on the limiting slide rail 14. The limiting device 15 can adopt a threaded rod structure, and the threaded rod penetrates through the limiting slide rail 14 and a corresponding threaded through hole in the fixing frame 13 on the lower side of the impact screen 9 to achieve the effect of fixing the impact screen 9.

As shown in fig. 1, openings are formed in the upper end and the lower end of the diversion chamber 7, the square funnel 6 is fixed to the diversion chamber 7 corresponding to the opening in the upper end of the diversion chamber 7, the opening in the lower end of the diversion chamber 7 corresponds to the feed inlet 4, the blanking passages are communicated with the feed inlet 4, and the flow dividing column 8 is vertically fixed to the inner wall of the diversion chamber 7.

As shown in fig. 1, vibration shafts 16 are symmetrically disposed at both sides of the case 1.

The utility model discloses a water conservancy diversion structure lets ore evenly distributed on the screen cloth as far as possible, thereby improves the utilization ratio of screen cloth and improves the efficiency that the ore screened. The long-strip-shaped sieve pores impacting the screen 9 and the coarse screen 10 have smaller friction force, can quickly separate out larger ores and guide the ores out of the box body 1, and can promote certain sliding speed when the ores pass through the smooth plane with extremely small friction force in the middle section of the middle layer screen 11, thereby reducing the detention time on the screen and further reducing the load of the circular vibrating sieve. When the circular vibrating screen works, the abrasion degree of the impact screen 9 is maximum, and the impact screen 9 can be easily replaced through the slide rail structure.

The utility model discloses can effectively shunt the ore, fully improve the utilization ratio of screen cloth, through the utility model discloses a screen unit can effectively reduce the ore detention time, reduces the circle and shakes the sieve load.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (5)

1. A screen box of a circular vibrating screen comprises a box body (1) and a buffer frame (2), and is characterized by further comprising a flow guide structure and a screen group;

the box body (1) is obliquely fixed on the buffer frame (2), a feeding hole (4) is formed in the top of the box body (1), and an opening is formed in the bottom surface of the box body (1);

the flow guide structure is arranged on the feeding hole (4), the flow guide structure comprises a square funnel (6), a flow guide chamber (7) and at least four flow distribution columns (8), and the flow distribution columns (8) divide the flow guide chamber (7) into a plurality of blanking channels along the conveying direction of fed ore;

the screen mesh group comprises a sliding rail structure, an impact screen mesh (9), a coarse screen mesh (10), a middle screen mesh (11) and a fine screen mesh (12), wherein fixing frames (13) are arranged on the lower sides of the coarse screen mesh (10), the middle screen mesh (11) and the fine screen mesh (12) and are obliquely fixed on the inner wall of the box body (1) through the fixing frames (13), the fixing frames (13) are also arranged on the lower side of the impact screen mesh (9) and are in sliding connection with the sliding rail structure through the fixing frames (13), and the sliding rail structure is obliquely fixed on the inner wall of the box body (1);

the impact screen (9) is arranged on the lower side of the feeding hole (4), the lower end of the impact screen (9) is lapped on the upper end of the coarse screen (10), the middle screen (11) is arranged on the lower sides of the impact screen (9) and the coarse screen (10), the fine screen (12) is arranged in an opening in the bottom surface of the box body (1), and the screen group is parallel to the bottom surface of the box body (1);

the sieve pores of the impact sieve (9) and the coarse sieve (10) are strip-shaped sieve pores, and the middle section of the middle layer sieve (11) is provided with a smooth plane for reducing the friction force of the sieve to the ore.

2. The screen box of the circular vibrating screen as claimed in claim 1, characterized in that the side wall of the box body (1) corresponding to the lower ends of the coarse screen (10), the middle screen (11) and the fine screen (12) is provided with a discharge port (5), the lower side of the box body (1) is provided with a collecting groove, and the collecting groove is provided with a collecting port (3).

3. The screen box of the circular vibrating screen according to claim 1, wherein the slide rail structure comprises a limiting slide rail (14) and a limiting device (15), the impact screen (9) can slide on the limiting slide rail (14), an opening for the impact screen (9) to slide into is arranged at the lower end of the limiting slide rail (14), the limiting device (15) is fixed at the opening of the limiting slide rail (14), and the limiting device (15) is used for fixing the fixing frame (13) of the impact screen (9) on the limiting slide rail (14).

4. The sieve box of the circular vibrating sieve of claim 1, wherein openings are formed at the upper end and the lower end of the diversion chamber (7), the square funnel (6) is fixed on the diversion chamber (7) corresponding to the opening at the upper end of the diversion chamber (7), the opening at the lower end of the diversion chamber (7) corresponds to the feed inlet (4), the blanking channel is communicated with the feed inlet (4), and the splitter column (8) is vertically fixed on the inner wall of the diversion chamber (7).

5. A sieve box of a circular vibrating sieve according to claim 1, characterized in that vibration shafts (16) are symmetrically arranged on both sides of the box body (1).

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