Ore screening device

Abstract

The invention discloses an ore screening device, and relates to the technical field of ore extraction. The vibrating screen comprises a barrel-shaped cover body, an inner screen barrel and an outer screen barrel, the barrel-shaped cover body is obliquely arranged, is of a step-shaped structure and comprises a discharging section and a collecting section, the inner screen barrel is rotationally connected with the inner wall of the discharging section, a plurality of rows of fine screen holes and a plurality of rows of coarse screen holes are formed in the side wall of the inner screen barrel in a circumferential array mode, and the outer screen barrel is rotationally connected to the outer wall of the inner screen barrel; a plurality of rows of discharging holes are formed in the side wall of the outer screen drum and used for adjusting the relative positions of the outer screen drum and the inner screen drum in the circumferential direction, when the discharging holes correspond to the coarse screen holes in position, the side wall of the outer screen drum blocks the fine screen holes, and when the discharging holes correspond to the fine screen holes in position, the side wall of the outer screen drum blocks the coarse screen holes. According to the ore screening device, ore screening is achieved through rotation of the inner screening drum and the outer screening drum, the screened ore is collected through the discharging opening of the discharging section and the discharging opening of the collecting section of the barrel-shaped cover body, and the problems that in the prior art, ore collection is inconvenient, and the overall use convenience is poor are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of ore mining, and in particular relates to an ore screening device. Background Art

[0002] After the ore is mined, the size of the ore is not consistent, so the ore needs to be screened and classified after it is mined to facilitate subsequent processing of the ore.

[0003] For example, Chinese invention CN116618292B discloses an ore screening machine for use in mines. When screening is required, mixed ore is fed through the feed port on the end face of the machine body so that the mixed ore falls on the top surface of the No. 1 sieve plate, and the vibration mechanism is started at the same time. As the ore on the top of the No. 1 sieve plate vibrates and rolls downward, medium-sized ore and small ore pass through the No. 1 sieve hole and fall onto the No. 2 sieve plate, and as the vibration and rolling continue, small ore passes through the No. 2 sieve hole and falls onto the No. 3 sieve plate, and sand and gravel particles pass through the No. 3 sieve hole and fall onto the guide platform and slide out at an angle.

[0004] When the No. 1 sieve plate, the No. 2 sieve plate and the No. 3 sieve plate in the above-mentioned prior art are distributed in layers, and the ore after screening in each layer rolls down from the same side, it is not convenient to classify and collect ores of different sizes, resulting in poor overall convenience of use. Summary of the invention

[0005] The object of the present invention is to provide an ore screening device, which screens the ore by rotating an inner sieve drum and an outer sieve drum, and collects the screened ore through a discharge section and a discharge port of an aggregate section of a cylindrical cover, thereby solving the problem that the existing ore is inconvenient to collect and the overall convenience of use is poor.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a device for screening ore, comprising a cylindrical cover, an inner screen drum and an outer screen drum, wherein the cylindrical cover drum is arranged obliquely, and has a stepped structure, comprising a discharge section and an aggregate section, and the diameter of the discharge section is smaller than the diameter of the aggregate section, and a discharge port is provided on the lower side of the side wall of the aggregate section; one end of the inner screen drum is rotatably connected to the inner wall of the discharge section, and the other end extends out of the cylindrical cover drum and is transmission-connected to a driving device; the side wall of the inner screen drum is provided with a plurality of rows of fine screen holes and a plurality of rows of coarse screen holes arranged in a circumferential array, and if A row of fine sieve holes and a plurality of rows of coarse sieve holes are arranged at intervals; the outer sieve drum is rotatably connected to the outer wall of the inner sieve drum, and the inner wall of the outer sieve drum is fitted with the outer wall of the inner sieve drum, and a plurality of discharge holes are opened on the side wall of the outer sieve drum; the inner diameter of the discharge hole is greater than or equal to the diameter of the coarse sieve hole, and is arranged one-to-one with the coarse sieve hole, for adjusting the relative position of the outer sieve drum and the inner sieve drum in the circumferential direction, and when the discharge hole corresponds to the position of the coarse sieve hole, the side wall of the outer sieve drum blocks the fine sieve hole, and when the discharge hole corresponds to the position of the fine sieve hole, the side wall of the outer sieve drum blocks the coarse sieve hole.

[0008] As a preferred technical solution of the present invention, the port of the discharge section is connected to a material guide cylinder, the material guide cylinder is in a curved structure, and the outlet end is arranged downward.

[0009] As a preferred technical solution of the present invention, the outer wall of the cylindrical cover is fixedly connected with a bracket and supported and fixed by the bracket, and the inclination angle of the cylindrical cover body is 10° to 60°.

[0010] As a preferred technical solution of the present invention, a plurality of baffles are fixedly connected to the interior of the inner screen drum, which are used to block the ore through the baffles, so as to increase the retention time of the ore in the inner screen drum.

[0011] As a preferred technical solution of the present invention, the driving device includes a gear plate fixedly connected to the driving motor and the outer wall of the inner screen drum, and the driving motor is transmission-connected to the gear plate via gears to drive the inner screen drum to rotate.

[0012] As a preferred technical solution of the present invention, the outer wall of the outer sieve cylinder is fixedly connected with an annular end plate, and the annular end plate is rotatably connected to the cylindrical cover body.

[0013] As a preferred technical solution of the present invention, the outer wall of the outer sieve drum is fixedly connected to a fan-shaped worm gear, and the fan-shaped worm gear is concentrically arranged with the outer sieve drum; the outer wall of the inner sieve drum is rotatably connected to a worm that meshes with the fan-shaped worm gear, which is used to drive the outer sieve drum to rotate through the fan-shaped worm gear by rotating the worm gear, thereby realizing adjustment of the relative position of the outer sieve drum and the inner sieve drum in the circumferential direction.

[0014] As a preferred technical solution of the present invention, it also includes a guide hopper, which is located at the upper end of the inner screen cylinder. The lower end of the guide hopper is provided with a guide pipe, and the end of the guide pipe extends into the inner screen cylinder for guiding ore into the inner screen cylinder.

[0015] As a preferred technical solution of the present invention, the outer wall of the guide hopper is fixedly connected to a fixing frame for supporting and fixing through the fixing frame.

[0016] As a preferred technical solution of the present invention, the fixed frame is equipped with rollers to facilitate the movement of the guide hopper. The fixed frame is fixedly connected with a cross bar, and the cross bar is slidably connected to the bracket to fix the sliding position of the cross bar, thereby limiting the position of the guide hopper.

[0017] The present invention has the following beneficial effects:

[0018] The present invention arranges an inner sieve drum and an outer sieve drum in a cylindrical cover body, screens the ore by rotating the inner sieve drum and the outer sieve drum, and discharges the screened ore in a centralized manner through the discharge section and the discharge port of the aggregate section of the cylindrical cover body, thereby facilitating the collection of the ore and effectively improving the overall convenience of use.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of a device for ore screening of the present invention;

[0022] Figure 2 for Figure 1 A front view of

[0023] Figure 3 for Figure 2 Left view of

[0024] Figure 4 for Figure 3 Sectional view at AA;

[0025] Figure 5 It is a schematic diagram of the structure of the cylindrical cover, the inner screen cylinder and the outer screen cylinder;

[0026] Figure 6 It is a schematic diagram of the structure of the inner screen cylinder and the outer screen cylinder during coarse screening;

[0027] Figure 7 It is a schematic diagram of the structure of the inner sieve cylinder and the outer sieve cylinder during fine screening;

[0028] Figure 8 A schematic diagram of the cross section of the inner sieve cylinder and the outer sieve cylinder during fine screening;

[0029] Fig. 9 It is an exploded view of the inner screen cylinder and the outer screen cylinder;

[0030] Fig.10 It is a schematic diagram of the structure of the inner screen cylinder;

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1-cylindrical cover, 2-inner screen cylinder, 3-outer screen cylinder, 4-driving motor, 5-material guide hopper, 101-discharging section, 102-aggregating section, 103-discharging port, 104-material guide cylinder, 105-bracket, 201-fine sieve hole, 202-coarse sieve hole, 203-baffle, 301-discharging hole, 302-circular end plate, 303-fan-shaped worm wheel, 304-worm, 401-gear plate, 501-material guide pipe, 502-cross bar. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] See also Figures 1 to 3 As shown, the present invention is an ore screening device, including a cylindrical cover body 1, an inner screen cylinder 2 and an outer screen cylinder 3. The outer wall of the cylindrical cover body 1 is fixedly connected to a bracket 105 and supported and fixed by the bracket 105. The cylindrical cover body 1 is tilted, and the tilt angle of the cylindrical cover body 1 is 10° to 60°.

[0036] like Figure 4 , 5As shown in Fig. 10, the cylindrical cover body 1 is a stepped structure, including a discharge section 101 and an aggregate section 102. The discharge section 101 has a port facing downward, while the aggregate section 102 has a port facing upward. The diameter of the discharge section 101 is smaller than the diameter of the aggregate section 102, and a discharge port 103 is provided on the lower side of the side wall of the aggregate section 102.

[0037] One end of the inner screen drum 2 is rotatably connected to the inner wall of the discharge section 101, and the other end extends out of the cylindrical cover body 1 and is transmission-connected to a driving device, such as a driving device including a gear plate 401 fixedly connected to the driving motor 4 and the outer wall of the inner screen drum 2. The driving motor 4 is transmission-connected to the gear plate 401 through a gear to drive the inner screen drum 2 to rotate. The gear plate 401 can also be a pulley, and the driving motor 4 and the inner screen drum 2 are driven by a belt.

[0038] The side wall of the inner screen cylinder 2 is provided with a plurality of rows of fine screen holes 201 and a plurality of rows of coarse screen holes 202 arranged in a circumferential array, and the diameter of the fine screen holes 201 is smaller than the diameter of the coarse screen holes 202. Each row of fine screen holes 201 is arranged in an array along the axial direction of the inner screen cylinder 2, and each row of coarse screen holes 202 is also arranged in an array along the axial direction of the inner screen cylinder 2, and a plurality of rows of fine screen holes 201 are arranged at intervals from a plurality of rows of coarse screen holes 202, and at the same time, the fine screen holes 201 and the coarse screen holes 202 are arranged in a one-to-one correspondence in the circumferential direction of the inner screen cylinder 2.

[0039] like Figure 4 , 5 As shown in FIG. 9 , the outer sieve drum 3 is rotatably connected to the outer wall of the inner sieve drum 2, and the inner wall of the outer sieve drum 3 is in contact with the outer wall of the inner sieve drum 2, and a plurality of discharge holes 301 are provided on the side wall of the outer sieve drum 3. Among them, the outer wall of the outer sieve drum 3 is fixedly connected with a circular end plate 302, and the circular end plate 302 is rotatably connected to the cylindrical cover body 1, so that the circular end plate 302 provides certain support for the inner wall of the outer sieve drum 3 and the inner sieve drum 2.

[0040] like Figure 6 As shown, the inner diameter of the discharge hole 301 is greater than or equal to the diameter of the coarse screen hole 202, and is arranged one-to-one with the coarse screen hole 202. The outer wall of the outer screen drum 3 is fixedly connected with a fan-shaped worm wheel 303, and the fan-shaped worm wheel 303 is arranged concentrically with the outer screen drum 3. The outer wall of the inner screen drum 2 is rotatably connected with a worm 304 meshing with the fan-shaped worm wheel 303. The rotating shaft at one end of the worm 304 is provided with a clamping part, which is convenient for clamping with a wrench and rotating the worm 304, or the rotating shaft at one end of the worm 304 is connected to a hand wheel, and the worm 304 is directly rotated by the hand wheel. The worm 304 rotates, and the outer screen drum 3 is driven to rotate through the fan-shaped worm wheel 303, so as to adjust the relative position of the outer screen drum 3 and the inner screen drum 2 in the circumferential direction.

[0041] Among them, the self-locking property of the worm gear is utilized so that the inner sieve drum 2 can drive the outer sieve drum 3 to rotate synchronously when it rotates. At the same time, multiple threaded through holes can be opened on the side wall of the outer sieve drum 3, and hand screws can be threadedly connected. By locking the hand screws, the position of the outer sieve drum 3 and the inner sieve drum 2 can be fixed, thereby ensuring the synchronous rotation of the inner sieve drum 2 and the outer sieve drum 3.

[0042] By adjusting the relative position of the outer screen drum 3 and the inner screen drum 2 in the circumferential direction, and when the position of the discharge hole 301 corresponds to the position of the coarse screen hole 202, the side wall of the outer screen drum 3 blocks the fine screen hole 201. At this time, during the rotation of the inner screen drum 2, the ore inside can only be screened out through the coarse screen hole 202 and the discharge hole 301, thereby realizing preliminary screening, and the screened ore falls into the aggregate section 102 of the cylindrical cover 1, and rolls down along the inner wall. Due to the step-like structure, the screened ore is collected at the lower end of the aggregate section 102 and discharged from the discharge port 103. The screened ore, due to the inclined setting of the outer screen drum 3, gradually rolls toward the discharge section 101, and is finally discharged from the discharge section 101. The screened ore is discharged in a centralized manner through the discharge section 101 of the cylindrical cover and the discharge port 103 of the aggregate section 102, so that the ore can be collected easily, thereby effectively improving the overall convenience of use.

[0043] like Figure 7 and 8 As shown, by rotating the worm 304 , the relative position of the outer sieve drum 3 and the inner sieve drum 2 in the circumferential direction is adjusted, and when the discharge hole 301 corresponds to the position of the fine sieve hole 201 , the side wall of the outer sieve drum 3 blocks the coarse sieve hole 202 .

[0044] At this time, when the inner screen drum 2 is rotating, the ore inside can only be screened out through the fine screen holes 201 and the discharge holes 301, thereby achieving a finer screening of the ore, making it convenient to flexibly adjust the outer screen drum 3 according to different screening specifications, and screen ores with different specifications.

[0045] As a preferred embodiment, Figure 1 , 4 As shown in FIG10 , the port of the discharge section 101 is connected to a guide cylinder 104 , which is in a curved structure and a reducer structure, with its diameter gradually decreasing along the outlet end, and the outlet end is arranged downward, so as to facilitate the centralized discharge of the ore and improve the convenience of collection.

[0046] At the same time, a plurality of baffles 203 are welded or screwed inside the inner screen drum 2 to block the ore rolling toward the discharge section 101 in the inner screen drum 2 through the baffles 203, thereby increasing the retention time of the ore in the inner screen drum 2 and ensuring more thorough screening of the ore.

[0047] As another preferred embodiment, Figure 1 and 4 As shown, it also includes a guide hopper 5, which is located at the upper end of the inner screen cylinder 2. The lower end of the guide hopper 5 is provided with a guide pipe 501. During screening, the ore is directly transported into the guide hopper 5 through a conveying device. The end of the guide pipe 501 extends into the inner screen cylinder 2 to guide the ore into the inner screen cylinder 2, thereby improving the convenience of loading.

[0048] Meanwhile, the outer wall of the guide hopper 5 is fixedly connected with a fixing frame 501, which is used for supporting and fixing through the fixing frame 501. The fixing frame 501 is equipped with rollers to facilitate the movement of the guide hopper 5, thereby improving the convenience of moving or adjusting the position of the guide hopper 5.

[0049] In addition, the fixed frame 501 is fixedly connected with the cross bar 502, and the cross bar 502 is slidably connected with the bracket 105, such as the cross bar 502 and the bracket 105 are connected through a guide sleeve, and the guide sleeve is connected with a screw, and the cross bar 502 is squeezed by the screw by locking the screw to fix the sliding position of the cross bar 502, thereby limiting the position of the guide hopper 5.

[0050] In addition, the side wall of the aggregate section 102 of the cylindrical cover body 1 can be connected to the dust removal device through a pipeline, so as to facilitate the extraction of dust generated during screening, achieve the dust removal effect, and help improve the overall environmental protection performance.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for ore screening, characterized in that: include: A cylindrical cover body (1), wherein the cylindrical cover body (1) is arranged at an angle, and has a stepped structure, comprising a discharge section (101) and a collection section (102), wherein the diameter of the discharge section (101) is smaller than the diameter of the collection section (102), and a discharge opening (103) is provided on the lower side of the side wall of the collection section (102); An inner screen drum (2), one end of the inner screen drum (2) being rotatably connected to the inner wall of the material discharging section (101), and the other end of the inner screen drum (2) extending out of the cylindrical cover body (1) and being transmission-connected to a driving device; a side wall of the inner screen drum (2) is provided with a plurality of rows of fine screen holes (201) and a plurality of rows of coarse screen holes (202) arranged in a circumferential array, and the plurality of rows of fine screen holes (201) and the plurality of rows of coarse screen holes (202) are arranged at intervals; An outer sieve cylinder (3), the outer sieve cylinder (3) being rotatably connected to the outer wall of the inner sieve cylinder (2), and the inner wall of the outer sieve cylinder (3) being in close contact with the outer wall of the inner sieve cylinder (2), and the side wall of the outer sieve cylinder (3) being provided with a plurality of discharge holes (301); The inner diameter of the discharge hole (301) is greater than or equal to the diameter of the coarse sieve hole (202), and is arranged in one-to-one correspondence with the coarse sieve hole (202), and is used to adjust the relative position of the outer sieve drum (3) and the inner sieve drum (2) in the circumferential direction; when the discharge hole (301) corresponds to the coarse sieve hole (202), the side wall of the outer sieve drum (3) blocks the fine sieve hole (201); when the discharge hole (301) corresponds to the fine sieve hole (201), the side wall of the outer sieve drum (3) blocks the coarse sieve hole (202).

2. The ore screening device according to claim 1, characterized in that: The port of the material discharging section (101) is connected to a material guiding cylinder (104), the material guiding cylinder (104) is in a curved structure, and the outlet end is arranged downward.

3. A device for ore screening according to claim 1 or 2, characterized in that: The outer wall of the cylindrical cover body (1) is fixedly connected to a bracket (105) and is supported and fixed by the bracket (105), and the inclination angle of the cylindrical cover body (1) is 10° to 60°.

4. The device for ore screening according to claim 1, characterized in that: A plurality of baffles (203) are fixedly connected to the interior of the inner screen drum (2) and are used to block ore through the baffles (203), thereby increasing the retention time of the ore in the inner screen drum (2).

5. The device for ore screening according to claim 1 or 2, characterized in that: The driving device comprises a gear plate (401) fixedly connected to the driving motor (4) and the outer wall of the inner screen drum (2); the driving motor (4) is drivingly connected to the gear plate (401) via a gear, and is used to drive the inner screen drum (2) to rotate.

6. The device for ore screening according to claim 1, characterized in that: The outer wall of the outer sieve cylinder (3) is fixedly connected with a circular end plate (302), and the circular end plate (302) is rotatably connected to the cylindrical cover body (1).

7. A device for ore screening according to claim 1 or 6, characterized in that: The outer wall of the outer sieve drum (3) is fixedly connected with a fan-shaped worm gear (303), and the fan-shaped worm gear (303) is arranged concentrically with the outer sieve drum (3); The outer wall of the inner sieve drum (2) is rotatably connected to a worm (304) meshing with a fan-shaped worm wheel (303), and is used to drive the outer sieve drum (3) to rotate through the fan-shaped worm wheel (303) through the rotation of the worm (304), thereby adjusting the relative position of the outer sieve drum (3) and the inner sieve drum (2) in the circumferential direction.

8. The device for ore screening according to claim 3, characterized in that: The invention also comprises a material guide hopper (5), wherein the material guide hopper (5) is located at the upper end of the inner screen cylinder (2), and a material guide pipe (501) is provided at the lower end of the material guide hopper (5), and the end of the material guide pipe (501) extends into the inner screen cylinder (2) for guiding ore into the inner screen cylinder (2).

9. The device for ore screening according to claim 8, characterized in that: The outer wall of the guide hopper (5) is fixedly connected to a fixing frame (501) for supporting and fixing the guide hopper (5).

10. The device for ore screening according to claim 9, characterized in that: The fixed frame (501) is equipped with rollers to facilitate the movement of the guide hopper (5); the fixed frame (501) is fixedly connected with a cross bar (502), and the cross bar (502) is slidably connected to the bracket (105) to fix the sliding position of the cross bar (502) to limit the position of the guide hopper (5).

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