Ore screening and uniform feeding device

Abstract

The utility model belongs to the technical field of ore screening, and particularly relates to an ore screening uniform feeding device which comprises a screening frame. The screening assembly is arranged at the top of the screening frame and comprises a horizontal screening cylinder; the collecting hopper is fixedly connected with the screening frame and is positioned at the bottom of the horizontal screening barrel; the belt conveying line is located below the collecting hopper, and a plurality of height-adjustable blocking pieces are evenly arranged at the top of the belt conveying line at intervals. The screening assembly, the collecting hopper, the belt conveying line, the blocking piece and the like are arranged, the screening assembly is used for screening ore materials, the small-particle ore materials fall into the collecting hopper and finally fall onto the belt conveying line, and the large-particle ore materials are screened out; the ball milling efficiency of the ball mill is improved, the energy consumption of the ball mill is reduced, and the ore screening efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to ore screening technical field, concretely relates to ore screening uniform feeding device. BACKGROUND

[0002] Ore screening process usually includes raw ore mining, raw ore crushing, screening crushed ore, ball mill grinding, classification of ground ore slurry by classifier or hydrocyclone and subsequent concentration, etc. Among them, ball mill grinding is an important link in ore screening, and the phenomenon of ball mill discharge port blockage is prone to occur during centralized feeding, which affects ball milling and production efficiency.

[0003] In the prior art, a device for uniformly feeding the ball mill is disclosed, such as CN219377450U discloses a uniform feeding device for stacked ore materials, which is installed at the ball mill inlet and includes a feeding hopper and a controller. Inside the feeding hopper, from high to low, there are: a material falling baffle device I, a material falling sieve plate device, and a material falling baffle device II. The disclosed uniform feeding device avoids the situation of different volume ore materials falling together, causing the discharge port to be blocked and the grinding concentration to fluctuate greatly, by setting the material falling sieve plate device to screen the ore materials and achieve classified feeding.

[0004] It is undeniable that the disclosed uniform feeding device for stacked ore materials can achieve the above effects, but it still has some shortcomings: the device only realizes classified feeding, but in actual application, larger volume ore materials need to spend a long grinding time to reach the required fineness when entering the ball mill, that is, the processing time of the ball mill for larger volume materials is longer, which will reduce the processing capacity of the ball mill and affect the ore screening efficiency; in addition, larger volume ore materials need more energy to achieve crushing during the grinding process, which will increase the energy consumption of the ball mill.

[0005] Therefore, if the uniform feeding device installed at the ball mill inlet can screen out larger volume ore materials and uniformly feed smaller volume ore materials into the ball mill, the above problems will be solved.

[0006] The information disclosed in this BACKGROUND section is only intended to enhance the understanding of the general background of the present utility model, and should not be taken as an acknowledgment or any form of suggestion that it constitutes prior art to the present utility model. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing an ore screening uniform feeding device to solve the problems of the uniform feeding device for stacked ore materials in the background art.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0009] An ore screening uniform feeding device, comprising:

[0010] A screening frame;

[0011] A screening assembly arranged on the top of the screening frame, the screening assembly comprising a horizontal screening drum and a power support assembly and an auxiliary support assembly arranged on both sides of the bottom of the horizontal screening drum and abutting against the outer wall of the horizontal screening drum;

[0012] A collecting hopper fixedly connected to the screening frame and located at the bottom of the horizontal screening drum;

[0013] A belt conveying line located below the collecting hopper, a plurality of height-adjustable blocking pieces being uniformly and spacedly arranged on the top of the belt conveying line, the blocking piece comprising a connecting plate, a connecting arm fixed to the end of the connecting plate, and a blocking plate fixedly connected to the connecting plate at the top and vertically downward at the bottom; wherein a plurality of adjusting plates are uniformly and spacedly fixed to the outer wall of the blocking plate on both sides of the belt conveying line, a plurality of adjusting holes are spacedly arranged on the adjusting plate, a clearance slot corresponding to the position of the adjusting plate is arranged on the connecting arm, and a limiting hole corresponding to the adjusting hole is arranged on the connecting arm.

[0014] As a preferred, the horizontal screening drum comprises two drum bodies arranged at intervals and a screening mesh fixed between the two drum bodies, the screening mesh comprises a plurality of straight rods uniformly and spacedly distributed along the circumference of the drum body and a plurality of circular rings fixedly connected to the straight rods and uniformly and spacedly distributed along the axis of the drum body.

[0015] As a preferred, the screening assembly further comprises a plurality of spiral fins fixed to the inside of the screening mesh.

[0016] As a preferred, the power support assembly comprises a rotating shaft along the axis of the horizontal screening drum, power tires fixed to the end of the rotating shaft, and a belt pulley; wherein the rotating shaft is provided with a support plate rotatably connected thereto at the position on both sides of the power tire, and the support plate is fixed to the screening frame; the outer wall of the power tire at both ends frictionally contacts the outer wall of the drum body at the corresponding position.

[0017] As a preferred, the auxiliary support assembly comprises a fixed shaft and an auxiliary tire fixed to the fixed shaft; wherein the fixed shaft is provided with a fixed plate rotatably connected thereto at the position on both sides of the auxiliary tire, and the fixed plate is fixed to the screening frame; the auxiliary support assembly is provided with two, and the outer wall of the auxiliary tire on the two auxiliary support assemblies frictionally contacts the outer wall of the drum body at the corresponding position.

[0018] As a preferred, two annular limiting plates are fixed at intervals on the outer wall of the drum body, and the power tire and the auxiliary tire are located between the two limiting plates.

[0019] Preferably, the outer side of the limiting plate is provided with a limiting bearing, the outer wall of the limiting bearing abutting the outer wall of the limiting plate; the inner ring of the limiting bearing is fixed with a mounting shaft, and the bottom of the mounting shaft is fixedly connected with the screening frame.

[0020] Preferably, the front end of the screening frame is fixed with a flow guide groove, and the flow guide groove is inclined downward and extends into the horizontal screening cylinder near one end of the horizontal screening cylinder.

[0021] Preferably, from the direction close to the collecting hopper to the direction away from the collecting hopper, the distance between the bottom end of the blocking plate in the plurality of blocking pieces and the top of the belt conveying line gradually decreases.

[0022] Compared with the prior art, the utility model has the advantages of:

[0023] The utility model discloses set up screening subassembly, collecting hopper, belt conveying line and blocking piece etc. screening subassembly carries out screening to ore material, and the smaller granule's ore material falls into collecting hopper and finally falls to the belt conveying line, and the larger granule's ore material is screened out, and it helps to improve the ball mill efficiency of ball mill and reduce the energy consumption of ball mill, improves ore screening efficiency. In addition, the belt conveying line gradually spreads and lays to the belt of belt conveying line in the process of conveying ore material, and the belt conveying line uniformly convey ore material to ball mill, and it helps to the uniform feeding of ball mill, avoids the situations such as the blockage of discharge port, the fluctuation of ore concentration, and helps the ball mill operation of ball mill, and improves ore screening efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the whole structure schematic diagram of the utility model;

[0025] Figure 2 It is Figure 1 It is the enlarged view of A in the middle;

[0026] Figure 3 It is the structure schematic diagram of screening subassembly of the utility model;

[0027] Figure 4 It is Figure 3 Front view;

[0028] Figure 5 It is Figure 3 Rear view;

[0029] Figure 6 It is Figure 3 Left view;

[0030] Figure 7 It is Figure 3 Right view;

[0031] Figure 8 It is the structure schematic view of the blocking piece of the utility model.

[0032] Figure 9 It is the structure schematic view of the spiral piece of the utility model.

[0033] Main figure mark explanation:

[0034] 10, sieve frame; 11, flow guide groove;

[0035] 20, sieve assembly; 21, horizontal sieve cylinder; 211, cylinder body; 212, sieve net; 213, limiting plate; 2121, straight rod; 2122, circular ring; 22, power support assembly; 221, rotating shaft; 222, power tire; 223, belt pulley; 224, support plate; 23, auxiliary support assembly; 231, fixed shaft; 232, auxiliary tire; 233, fixed plate; 24, spiral piece;

[0036] 30, material collecting hopper;

[0037] 40, belt conveying line; 41, adjusting plate; 411, adjusting hole;

[0038] 50, blocking piece; 51, connecting plate; 52, connecting arm; 521, let-position groove; 522, limiting hole; 53, blocking plate;

[0039] 61, limiting bearing; 62, mounting shaft. DETAILED DESCRIPTION

[0040] The technical scheme of the utility model patent will be described clearly and completely below, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0041] EMBODIMENT

[0042] Refer to the attached Figures 1-9 Ore screening uniform feeding device, comprising:

[0043] Sieve frame 10;

[0044] The screening assembly 20 arranged on the top of the screening frame 10 comprises a horizontal screening cylinder 21 and a power support assembly 22 and an auxiliary support assembly 23 arranged on both sides of the bottom of the horizontal screening cylinder 21 and abutting against the outer walls of both ends of the horizontal screening cylinder 21.

[0045] The collecting hopper 30 is fixedly connected with the screening frame 10 and located at the bottom of the horizontal screening cylinder 21.

[0046] The belt conveying line 40 is located below the collecting hopper 30, and a plurality of height-adjustable blocking pieces 50 are uniformly and spacedly arranged on the top of the belt conveying line 40. The blocking piece 50 comprises a connecting plate 51, connecting arms 52 fixedly connected with both ends of the connecting plate 51, and a blocking plate 53 fixedly connected with the top of the connecting plate 51 and vertically downward from the bottom. A plurality of adjusting plates 41 are uniformly and spacedly arranged on the outer walls of both sides of the belt conveying line 40, and a plurality of adjusting holes 411 are spacedly arranged on the adjusting plate 41. A clearance groove 521 corresponding to the position of the adjusting plate 41 is arranged on the connecting arm 52, and a limiting hole 522 corresponding to the adjusting hole 411 is arranged on the connecting arm 52. From the direction close to the collecting hopper 30 to the direction away from the collecting hopper 30, the distance from the bottom end of the blocking plate 53 in the plurality of blocking pieces 50 to the top of the belt of the belt conveying line 40 gradually decreases.

[0047] In the embodiment, the screening assembly 20 further comprises three spiral pieces 24 fixedly arranged in the inside of the screening net 212.

[0048] Secondly, in the embodiment, the power support assembly 22 comprises a rotating shaft 221 along the axis of the horizontal screening cylinder 21, power tires 222 fixedly connected with both ends of the rotating shaft 221, and a belt pulley 223 fixedly connected with one end of the rotating shaft 221. The rotating shaft 221 is provided with a support plate 224 rotatably connected therewith at the positions on both sides of the power tires 222, and the support plate 224 is fixedly connected with the screening frame 10. The outer walls of the power tires 222 abut against and frictionally contact the outer walls of the cylinder 211 at the corresponding positions.

[0049] In addition, in the embodiment, the auxiliary support assembly 23 comprises a fixed shaft 231 and auxiliary tires 232 fixedly connected with the fixed shaft 231. The fixed shaft 231 is provided with a fixed plate 233 rotatably connected therewith at the positions on both sides of the auxiliary tires 232, and the fixed plate 233 is fixedly connected with the screening frame 10. The auxiliary support assembly 23 is provided with two, and the outer walls of the auxiliary tires 232 abut against and frictionally contact the outer walls of the cylinder 211 at the corresponding positions.

[0050] Then, in the present embodiment, the outer wall of the cylinder 211 is fixed with two annular limiting plates 213 at intervals, and the power tire 222 and the auxiliary tire 232 are located between the two limiting plates 213; the outer side of the limiting plate 213 is provided with a limiting bearing 61, and the outer wall of the limiting bearing 61 abuts against the outer wall of the limiting plate 213; the inner ring of the limiting bearing 61 is fixed with a mounting shaft 62, and the bottom of the mounting shaft 62 is fixedly connected with the screening frame 10. By arranging the limiting bearing 61 and the mounting shaft 62, the horizontal screening cylinder 21 can be limited, so as to avoid axial movement of the horizontal screening cylinder 21.

[0051] Finally, in the present embodiment, the front end of the screening frame 10 is fixed with a flow guide groove 11, and the flow guide groove 11 is inclined downward near one end of the horizontal screening cylinder 21 and extends into the horizontal screening cylinder 21. It should be noted here that the flow guide groove 11 does not enter the screening mesh 212 and does not interfere with the spiral blade 24.

[0052] In the present embodiment, the pulley 223 is connected to the output wheel on the external diesel engine through an external belt, so that the external diesel engine drives the pulley 223 in the present embodiment to rotate.

[0053] In use, the ore material to be ball milled is added to the flow guide groove 11 through an external conveyor and other equipment, and the ore material is guided into the horizontal screening cylinder 21 by the inclined arrangement of the flow guide groove 11. When the external diesel engine drives the pulley 223 to rotate, the pulley 223 drives the rotating shaft 221 to rotate, and the rotating shaft 221 drives the power tire 222 to rotate, and the power tire 222 drives the horizontal screening cylinder 21 to rotate by means of the friction between the power tire 222 and the cylinder 211 of the horizontal screening cylinder 21. The rotation of the horizontal screening cylinder 21 drives the ore material at the position of the screening mesh 212 to roll. In the process of rolling of the ore material, the smaller particles fall into the material collecting hopper 30 through the gap between the straight rod 2121 and the circular ring 2122, and finally fall onto the belt conveying line 40. The larger particle ore material remains in the screening mesh 212.

[0054] In the present embodiment, a plurality of spiral blades 24 are fixed in the screening mesh 212, so that in the process of the spiral blades 24 rotating with the screening mesh 212, the spiral blades 24 will generate a thrust force on the ore material located in the screening mesh 212 (this effect can be achieved by controlling the direction of rotation of the screening mesh 212), and under the action of the thrust force, the ore material moves away from the flow guide groove 11. In the process of moving away from the flow guide groove 11, the smaller particle ore material falls onto the belt conveying line 40, and the larger particle ore material is discharged from the end of the horizontal screening cylinder 21 away from the flow guide groove 11 (the part of the ore material will be crushed to a suitable particle size later), thereby realizing the screening of the ore material to be ball milled, avoiding the larger particle ore material from entering the ball mill to affect the ball milling efficiency of the ball mill, and at the same time helping to reduce the energy consumption of the ball mill.

[0055] The ore material falling to the belt conveyor 40 is gradually flattened and laid flat on the belt of the belt conveyor 40 under the action of the blocking plates 53 of the plurality of blocking members 50, and falls into the ball mill from one end away from the collecting hopper 30 under the conveying of the belt conveyor 40. It should be noted that the blocking plates 53 produce a blocking effect on the ore material on the belt conveyor 40, thereby flattening the accumulated material. The gradually decreasing distance from the bottom end of the blocking plates 53 to the top of the belt of the belt conveyor 40 helps the gradual flattening and laying of the ore material. It should be noted that when the blocking members 50 are installed, the adjusting plates 41 on the outer walls of the blocking plates on both sides of the belt conveyor 40 are located in the accommodation grooves 521 of the connecting arms 52, and after the limiting holes 522 on the connecting arms 52 are corresponded to the adjusting holes 411 at appropriate positions on the adjusting plates 41, a pin shaft is inserted to connect the connecting arms 52 and the adjusting plates 41. Of course, if the limiting holes 522 are corresponded to the adjusting holes 411 close to the bottom end of the adjusting plates 41, the distance from the bottom end of the blocking plates 53 to the top of the belt of the belt conveyor 40 is smaller; on the contrary, if the limiting holes 522 are corresponded to the adjusting holes 411 away from the bottom end of the adjusting plates 41, the distance from the bottom end of the blocking plates 53 to the top of the belt of the belt conveyor 40 is larger.

[0056] The ore material on the belt conveyor 40 is gradually flattened by the action of the blocking plates 53 of the plurality of blocking members 50, and the belt conveyor 40 uniformly conveys the ore material into the ball mill, which helps the uniform feeding of the ball mill, avoids the blockage of the discharge port and the large fluctuation of the ore grinding concentration, helps the ball milling operation of the ball mill, and improves the ore screening efficiency.

[0057] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the present application to the precise forms described. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the present application. The exemplary embodiments were chosen and described in order to explain the principles of the present application and its practical application and to allow others skilled in the art to understand the present application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. The scope of the present application is intended to be defined by the claims and their equivalents.

Claims

1. Ore screening uniform feeding device, characterized by, The utility model relates to a screening device, including: Screening frame; Screening assembly arranged on the top of the screening frame, the screening assembly includes horizontal screening cylinder and power support assembly and auxiliary support assembly arranged on both sides of the bottom of the horizontal screening cylinder and abutting with the outer wall of the horizontal screening cylinder; Collecting hopper fixedly connected with the screening frame and located at the bottom of the horizontal screening cylinder; Belt conveying line located below the collecting hopper, a plurality of height-adjustable blocking pieces are uniformly and spacedly arranged on the top of the belt conveying line, the blocking piece includes a connecting plate, a connecting arm fixedly arranged on the end of the connecting plate and a blocking plate fixedly connected with the connecting plate on the top and vertically downward on the bottom; wherein a plurality of adjusting plates are uniformly and spacedly fixed on the outer wall of the blocking plate on both sides of the belt conveying line, a plurality of adjusting holes are spacedly arranged on the adjusting plate, a clearance slot corresponding to the position of the adjusting plate is arranged on the connecting arm, and a limiting hole corresponding to the adjusting hole is arranged on the connecting arm.

2. The ore screening uniform feeding device according to claim 1, characterized in that, The horizontal screening cylinder includes two cylinder bodies arranged at intervals and a screening net fixed between the two cylinder bodies, the screening net includes a plurality of straight rods uniformly and spacedly arranged along the circumference of the cylinder body and a plurality of circular rings fixedly connected with the straight rods and uniformly and spacedly arranged along the axis of the cylinder body.

3. An ore screening uniform feeding device according to claim 2, characterized in that, The screening assembly further includes a plurality of spiral blades fixed in the interior of the screening net.

4. The ore screening uniform feeding device according to claim 2, characterized in that, The power support assembly includes a rotating shaft along the axis of the horizontal screening cylinder, power tires fixedly arranged on both ends of the rotating shaft and a belt pulley; wherein the rotating shaft is provided with a support plate rotatably connected thereto at the positions on both sides of the power tires, the support plate is fixed on the screening frame, and the outer wall of the power tire on both ends frictionally contacts the outer wall of the cylinder body at the corresponding positions.

5. An ore screening uniform feeding device according to claim 4, characterized in that, The auxiliary support assembly includes a fixed shaft and an auxiliary tire fixed on the fixed shaft; wherein the fixed shaft is provided with a fixed plate rotatably connected thereto at the positions on both sides of the auxiliary tire, the fixed plate is fixed on the screening frame, and the outer wall of the auxiliary tire on the two auxiliary support assemblies frictionally contacts the outer wall of the cylinder body at the corresponding positions.

6. An ore screening uniform feeding device according to claim 5, characterized in that, Two annular limiting plates are fixed on the outer wall of the cylinder body at intervals, and the power tire and the auxiliary tire are located between the two limiting plates.

7. An ore screening uniform feeding device according to claim 6, characterized in that, A limiting bearing is arranged on the outer side of the limiting plate, the outer wall of the limiting bearing abuts against the outer wall of the limiting plate, an installation shaft is fixed on the inner ring of the limiting bearing, and the bottom of the installation shaft is fixedly connected with the screening frame.

8. The ore screening uniform feeder device according to claim 1, characterized in that, A flow guide groove is fixed on the front end of the screening frame, the flow guide groove is inclined downward and extends into the horizontal screening cylinder at one end close to the horizontal screening cylinder.

9. The ore screening uniform feeder device according to claim 1, characterized in that, From the direction close to the collecting hopper to the direction away from the collecting hopper, the distance between the bottom end of the blocking plate in the plurality of blocking pieces and the top of the belt of the belt conveying line gradually decreases.

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