Screening equipment

Abstract

The utility model provides screening equipment which is used for screening ore sand and comprises a first screening device and a second screening device, the first screening device comprises a supporting frame and a drum screen, and the drum screen is arranged on the supporting frame; the second screening device comprises a bottom bracket and a vibrating screen, the bottom bracket is arranged below the supporting frame, the vibrating screen is arranged on the bottom bracket, and the vibrating screen and the drum screen are oppositely arranged. According to the roller screen, the roller continuously rolls to drive ore sand to turn and roll in the roller, so that the ore sand cannot be adhered to the roller, and the possibility that screen holes are blocked is reduced. And after pre-screening is conducted through the drum screen, large-particle and sharp ore is lifted and removed and does not fall onto the vibrating screen any more, and therefore the impact of the ore on the vibrating screen can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mineral sand screening, and in particular to a screening device. BACKGROUND

[0002] In mining engineering, the vibrating screen plays a significant role. It can not only classify the mined-out mineral sand according to particle size, provide suitable raw materials for subsequent processes, but also avoid large particles from entering the equipment, reduce excessive wear and tear of the equipment, and prolong its service life. By screening out impurities, the concentrate grade is improved, and the target mineral enrichment effect is better. Usually, the vibrating screen can be linked with devices such as conveyors to promote the automation and continuity of the beneficiation process and improve production efficiency. At the same time, the vibrating screen can reasonably reuse different particle size materials, helping to realize efficient use of resources and maximize the value of mineral resources.

[0003] At present, the vibrating screen usually uses a flat screen and uses a vibration exciter or a driving motor to produce mechanical vibration of the screen, so that the mineral sand particles jump on the screen surface, and then the mineral sand of the required size is screened out. However, in the actual screening process of the vibrating screen, on the one hand, if the mineral sand contains sticky substances or has high humidity, the mineral sand is easy to adhere to the screen, causing the screen to be blocked. On the other hand, when processing mineral sand with high hardness, the mineral sand continuously jumps on the screen, causing strong impact on the screen, which is easy to wear and tear the screen, and easily leads to the rupture of the screen. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a screening device, which aims to solve the problem that the existing vibrating screen is easy to be blocked when encountering mineral sand containing sticky substances or having high humidity, and is easy to be broken when processing mineral sand with high hardness.

[0005] The utility model is implemented as follows:

[0006] A screening device for screening mineral sand, comprising:

[0007] A first screening device comprising a support frame and a drum screen, wherein the drum screen is arranged on the support frame;

[0008] A second screening device comprising a bottom bracket and a vibrating screen, wherein the bottom bracket is arranged below the support frame, the vibrating screen is arranged on the bottom bracket, and the vibrating screen is arranged opposite to the drum screen.

[0009] Further, the side of the support frame close to the bottom bracket is provided with a material guide.

[0010] Further, the drum of the drum screen has a first discharge port, and the support frame is provided with a first discharge plate corresponding to the first discharge port.

[0011] Further, the drum screen is a shaftless drum screen or a shaft drum screen.

[0012] Further, the vibration screen comprises a screen mesh and a driving mechanism, the screen mesh is movably arranged on the bottom bracket, the screen mesh has a second discharge port, the screen mesh has a connecting end opposite to the second discharge port, the driving mechanism is arranged opposite to the connecting end, the driving mechanism comprises a driving motor, a transmission assembly, a transmission shaft, an eccentric wheel and a connecting rod, one end of the transmission shaft is connected to an output end of the driving motor through the transmission assembly, the eccentric wheel is sleeved on the other end of the transmission shaft, one end of the connecting rod is rotatably connected to the eccentric wheel, and the other end of the connecting rod is rotatably connected to the connecting end.

[0013] Further, two sliding surfaces are arranged on the bottom bracket, and sliding units corresponding to the two sliding surfaces are arranged on the screen mesh, and each sliding unit comprises at least two rollers.

[0014] Further, each sliding surface is provided with a limiting plate parallel to the screen mesh.

[0015] Further, the bottom bracket is provided with a second discharge plate corresponding to the second discharge port.

[0016] Further, a feeding device is arranged, the feeding device comprises a hopper and a feeding pipe, the hopper is arranged opposite to the first screening device, one end of the feeding pipe is communicated with an outlet of the hopper, and the other end of the feeding pipe extends into a drum of the drum screen.

[0017] Further, a supporting seat is arranged below the hopper.

[0018] Compared with the prior art, the drum screen of the utility model is continuously rolled, which drives the mineral sand to turn and roll in the drum, so that the mineral sand cannot stick to the drum, and the possibility of clogging the screen hole is reduced. After pre-screening by the drum screen, large particles and sharp ores are removed and cannot fall on the vibration screen, so that the impact of the ores on the vibration screen can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0020] Figure 1 is a perspective view of a screening equipment according to an embodiment of the present application;

[0021] Figure 2 is a structural schematic view of a first screening device according to an embodiment of the present application;

[0022] Figure 3 is a structural schematic view of a second screening device according to an embodiment of the present application;

[0023] Figure 4 is a structural schematic view of a bottom bracket according to an embodiment of the present application;

[0024] Figure 5 is a structural schematic view of a driving mechanism according to an embodiment of the present application.

[0025] Explanation of reference signs:

[0026] 10, first screening device; 11, support bracket; 111, material guiding member; 112, first discharging plate; 12, drum screen;

[0027] 20, second screening device; 21, bottom bracket; 211, sliding surface; 212, limiting plate; 22, vibrating screen; 221, screen mesh; 2211, roller; 2212, second discharging plate; 222, driving mechanism; 2221, driving motor; 2222, transmission assembly; 2223, transmission shaft; 2224, eccentric wheel; 2225, connecting rod; 2226, base;

[0028] 30, feeding device; 31, hopper; 32, feeding pipe;

[0029] 40, support base. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that like reference numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it should not be further defined and explained in subsequent views.

[0033] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0034] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0035] Please refer to Figures 1-2 As shown in the drawings, the utility model provides a screening equipment for screening mineral sand, which comprises a first screening device 10 and a second screening device 20, the first screening device 10 comprises a support frame 11 and a drum screen 12, the drum screen 12 is arranged on the support frame 11, the second screening device 20 comprises a bottom bracket 21 and a vibrating screen 22, the bottom bracket 21 is arranged below the support frame 11, the vibrating screen 22 is arranged on the bottom bracket 21, and the vibrating screen 22 is arranged opposite to the drum screen 12.

[0036] For example, the drum screen 12 is a shaftless drum screen 12 or a shaft drum screen 12 and the like.

[0037] In practical application, the mineral sand is added into the drum of the drum screen 12, the mineral sand is pre-screened by the continuous rotation of the drum, and the large particles and sharp ores can be screened out. After the pre-screened mineral sand falls on the vibrating screen 22, the vibrating screen 22 performs conventional screening, so that ores with different particle sizes can be screened out. On the one hand, based on the continuous rolling of the drum of the drum screen 12, the mineral sand is turned and rolled in the drum, so that the mineral sand cannot stick to the drum, and the possibility of clogging the screen hole is reduced. On the other hand, after pre-screening by the drum screen 12, the large particles and sharp ores are removed and cannot fall on the vibrating screen 22, so that the impact of the ores on the vibrating screen 22 can be reduced.

[0038] As shown in Figures 1-2 In one possible embodiment, the support frame 11 is provided with a material guiding member 111 close to one side of the bottom bracket 21.

[0039] For example, the material guiding member 111 can be a material guiding hopper, or the material guiding member 111 can include two material guiding plates, etc. When the material guiding member 111 includes two material guiding plates, the two material guiding plates are arranged in an inverted V shape.

[0040] In actual application, the material guiding member 111 can make the pre-screened mineral sand fall on the vibrating screen 22, thereby avoiding the mineral sand from being scattered around the second screening device 20.

[0041] As shown in Figure 1 and 3 In one possible embodiment, the drum screen 12 has a first discharge port, and the support frame 11 is provided with a first discharge plate 112 corresponding to the first discharge port.

[0042] In actual application, when large particles and sharp ores are discharged, the first discharge plate 112 provides convenience for the large particles and sharp ores to fall into the conveying device, thereby avoiding the large particles and sharp ores from being scattered on the ground.

[0043] As shown in Figure 1 , 3 and 5, in one possible embodiment, the vibrating screen 22 includes a screen mesh 221 and a driving mechanism 222. The screen mesh 221 is movably arranged on the bottom bracket 21. The screen mesh 221 has a second discharge port. The screen mesh 221 has a connecting end opposite to the second discharge port. The driving mechanism 222 is arranged opposite to the connecting end. The driving mechanism 222 includes a driving motor 2221, a transmission assembly 2222, a transmission shaft 2223, an eccentric wheel 2224, and a connecting rod 2225. One end of the transmission shaft 2223 is connected to an output end of the driving motor 2221 through the transmission assembly 2222. The eccentric wheel 2224 is sleeved on the other end of the transmission shaft 2223. One end of the connecting rod 2225 is rotatably connected to the eccentric wheel 2224. The other end of the connecting rod 2225 is rotatably connected to the connecting end.

[0044] For example, the transmission assembly 2222 can be a belt transmission assembly 2222, a gear transmission assembly 2222, or a chain transmission assembly 2222, etc. The driving mechanism 222 can be arranged on the bottom bracket 21. The driving mechanism 222 further includes a base 2226. The driving motor 2221 can be arranged on the base 2226. The transmission shaft 2223 is rotatably arranged on the base 2226.

[0045] In actual application, the driving motor 2221 drives the eccentric wheel 2224 to rotate through the transmission assembly 2222 and the transmission shaft 2223, and the connecting rod 2225 drives the screen 221 to reciprocate under the eccentric movement of the eccentric wheel 2224 and the end connected thereto, so as to realize the conventional screening of the pre-screened ore sand.

[0046] Please refer to Figure 4 In one possible embodiment, the bottom bracket 21 is provided with two sliding surfaces 211, and the screen 221 is provided with sliding units corresponding to the two sliding surfaces 211, and each sliding unit includes at least two rollers 2211.

[0047] For example, each roller 2211 is connected with the screen 221 through a bearing support, or the base of the screen 211 is provided with at least two circular tubes, and each circular tube is connected with two rollers 221 arranged along the width direction of the screen 211, that is, one roller 221 is rotatably connected to one end of the circular tube, and the other roller 211 is rotatably connected to the other end of the circular tube. It should be noted that the width direction of the screen 211 is based on the perspective view. Figure 3 and Figure 4 .

[0048] In actual application, when the screen 221 reciprocates, the screen 221 moves along the sliding surface 211 through the roller 2211, so as to reduce the friction between the screen 221 and the bottom bracket 21 as much as possible, and ensure the smooth movement of the screen 221.

[0049] Please refer to Figure 1 and 3 In one possible embodiment, each sliding surface 211 is provided with a limiting plate 212 parallel to the screen 221.

[0050] In actual application, the limiting plate 212 can limit the roller 2211, so as to prevent the roller 2211 from deviating.

[0051] Please refer to Figure 1 and 3 In one possible embodiment, the bottom bracket 21 is provided with a second discharging plate 2212 corresponding to the second discharging port.

[0052] In actual application, after the screen 221 completes the conventional screening of the pre-screened ore sand, the second discharging plate 2212 provides convenience for the ore on the screen 221 to fall into the conveyor and other equipment, so as to avoid the ore from scattering on the ground.

[0053] Please refer to Figure 1As shown in the figure, in one possible embodiment, the screening device comprises a feeding device 30, the feeding device 30 comprises a hopper 31 and a feeding pipe 32, the hopper 31 is arranged opposite to the first screening device 10, one end of the feeding pipe 32 is communicated with the outlet of the hopper 31, and the other end of the feeding pipe 32 extends into the drum of the drum screen 12.

[0054] In actual application, since the drum of the drum screen 12 is continuously rotating, the cooperation of the hopper 31 and the feeding pipe 32 can conveniently deliver the ore sand to the drum, thereby providing work efficiency.

[0055] Please refer to Figure 1 As shown in the figure, in one possible embodiment, the screening device comprises a support base 40, the support base 40 is arranged below the hopper 31.

[0056] In actual application, the support base 40 can ensure that the hopper 31 is higher than the drum, so that the feeding pipe 32 can be arranged in an inclined manner, thereby conveniently feeding the drum and avoiding the accumulation of the feeding pipe 32.

[0057] The above is only the preferred embodiment of the present application and is not used to limit the present application, and the present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A screening device for screening mineral sands, characterized in that, include: The first screening device (10) includes a support frame (11) and a drum screen (12), wherein the drum screen (12) is mounted on the support frame (11); The second screening device (20) includes a base bracket (21) and a vibrating screen (22). The base bracket (21) is located below the support frame (11), and the vibrating screen (22) is located on the base bracket (21) and is arranged opposite to the drum screen (12).

2. The screening equipment according to claim 1, characterized in that, The support frame (11) has a guide (111) on the side near the bottom bracket (21).

3. The screening equipment according to claim 1, characterized in that, The drum of the rotary screen (12) has a first discharge port, and the support frame (11) is provided with a first discharge plate (112) corresponding to the first discharge port.

4. The screening equipment according to claim 1, characterized in that, The drum screen (12) is either a shaftless drum screen (12) or a shafted drum screen (12).

5. The screening equipment according to claim 1, characterized in that, The vibrating screen (22) includes a screen (221) and a drive mechanism (222). The screen (221) is movably mounted on the base bracket (21). The screen (221) has a second discharge port and a connecting end opposite to the second discharge port. The drive mechanism (222) is disposed opposite to the connecting end and includes a drive motor (2221), a transmission assembly (2222), and a transmission shaft (222). 3) Eccentric wheel (2224) and connecting rod (2225): One end of the transmission shaft (2223) is connected to the output end of the drive motor (2221) through the transmission assembly (2222), the eccentric wheel (2224) is sleeved on the other end of the transmission shaft (2223), one end of the connecting rod (2225) is rotatably connected to the eccentric wheel (2224), and the other end of the connecting rod (2225) is rotatably connected to the connecting end.

6. The screening equipment according to claim 5, characterized in that, The base bracket (21) is provided with two sliding surfaces (211), and the screen (221) is provided with sliding units corresponding to the two sliding surfaces (211) one by one. Each sliding unit includes at least two rollers (2211).

7. The screening equipment according to claim 6, characterized in that, Each of the sliding surfaces (211) is provided with a limiting plate (212) parallel to the screen (221).

8. The screening equipment according to claim 5, characterized in that, The bottom bracket (21) is provided with a second discharge plate (2212) corresponding to the second discharge port.

9. The screening equipment according to any one of claims 1 to 8, characterized in that, The device includes a feeding device (30), which includes a hopper (31) and a feeding pipe (32). The hopper (31) is disposed opposite to the first screening device (10). One end of the feeding pipe (32) is connected to the outlet of the hopper (31), and the other end of the feeding pipe (32) extends into the drum of the drum screen (12).

10. The screening equipment according to claim 9, characterized in that, Includes a support base (40), which is located below the hopper (31).

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