Multi-frequency vibration fine ore screening device for mining

Abstract

The invention discloses a multi-frequency vibration fine-grained ore screening device for mining, and relates to the technical field of ore screening, the multi-frequency vibration fine-grained ore screening device for mining comprises a bearing underframe, a group of main longitudinal supports are spliced at the top of the bearing underframe at equal intervals, and an overhead bracket is spliced between the tops of the group of main longitudinal supports; a first screening mechanism, an intermittent lowering mechanism and a second screening mechanism are arranged in the bearing bottom frame, the main longitudinal support and the overhead bracket correspondingly, the first screening mechanism comprises a first screen and a second screen, and the second screening mechanism comprises a cavity and a set of combined screens. A group of combined screens can divide the interior of the cavity into a plurality of independent spaces, the mechanism adopts a mechanical transmission principle, direct discharge and graded repeated screening of part of unscreened ore particles can be effectively avoided, the vibration screening effect of the equipment can be greatly improved, the size of screened products is more uniform, a perfect ore particle release channel is arranged, and the screening efficiency is improved. And the problem that the ore particles fall off due to channel blockage can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of ore screening, in particular to a multi-frequency vibration fine-grained ore screening device for mining. Background Art

[0002] Ore refers to natural rocks mined from the earth's crust that contain useful minerals or metals. After processing, valuable metals or other compounds can be extracted from the ore, which are widely used in industry, construction, energy and other fields.

[0003] Ore screening is an important step in the mineral processing process. Its main purpose is to classify the ore according to the particle size. Through screening, a variety of process goals can be achieved, thereby improving the efficiency of subsequent processing and product quality.

[0004] However, the existing multi-frequency vibration fine-grained ore screening device for mining has the following shortcomings: Ore smelting requires crushing, screening and beneficiation. When the crushed ore is screened, the material is placed in the equipment. No matter how the vibration frequency is increased, the upper material will slide down directly due to insufficient processing and cannot be screened, resulting in poor ore screening effect. Traditional equipment is limited by its own structure and has limited screening capacity. Most of them can only complete coarse screening of ore but cannot achieve grading effect. The resulting screened products are single, which increases the difficulty of subsequent processes.

[0005] Therefore, we propose a multi-frequency vibration fine-grained ore screening device for mining in order to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a multi-frequency vibration fine-grained ore screening device for mining. By setting a first screening mechanism, the mechanism includes two screening components and is assembled in a stepped manner to achieve the effect of graded screening and improve the ore particle release channel. It can effectively avoid the direct discharge of some unscreened ore particles. Gradual repeated screening can greatly increase the vibration screening effect of the equipment to solve the problems raised by the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a multi-frequency vibration fine-grained ore screening device for mining, comprising a load-bearing base frame, characterized in that: a group of main longitudinal supports are equidistantly assembled on the top of the load-bearing base frame, and a top bracket is assembled between the tops of the group of main longitudinal supports; The load-bearing chassis, the main longitudinal support and the top bracket are respectively provided with a first screening mechanism, an intermittent lowering mechanism and a second screening mechanism; A first screening mechanism, the first screening mechanism comprises a first screen and a second screen, the first screen and the second screen are respectively connected with a first crankshaft connecting rod and a second crankshaft connecting rod at their starting ends, the first crankshaft connecting rod and the second crankshaft connecting rod can drive the first screen and the second screen to shake at a high speed, the unscreened material on the upper layer of the first screen is transported from the end to the lower layer, and the material screened by the first screen continuously falls into the second screen to further complete the screening; The second screening mechanism includes a cavity and a group of combined screens, wherein the group of combined screens can divide the interior of the cavity into multiple independent spaces, and a fan assembly is arranged on the outside of the cavity, and materials that are not fully screened at the end of the first screen can enter the cavity. The apertures in a group of combined screens tend to decrease from top to bottom, and materials screened by each combined screen are retained in a corresponding space. The fan assembly is connected to air passages with a number equal to the independent spaces, and the materials are pneumatically discharged after screening.

[0008] Preferably, two transverse brackets are assembled on the top of the load-bearing base frame, and secondary longitudinal brackets are assembled between the two top brackets, each of the secondary longitudinal brackets is respectively connected to a corresponding transverse bracket, and a belt conveyor is installed inside the top bracket, and a first splicing frame is assembled on the top of the top bracket, and a limited material regulating frame is assembled on the top of the first splicing frame, and two L-shaped brackets are assembled on the top of the limited material regulating frame, and a feed hopper is fixedly installed between the opposite sides of the two L-shaped brackets.

[0009] Preferably, the first screening mechanism also includes a first frame, the first frame is connected to the first screen, one end of the first frame is connected to the first crankshaft connecting rod, the first crankshaft connecting rod is installed inside the overhead bracket, one end of the overhead bracket is connected to the first sliding rod, the end of the first frame is placed on the first sliding rod, one side of the outer wall of the overhead bracket is connected to the first driving member, one end of the first crankshaft connecting rod is connected to the shaft end of the first driving member, and a first primary separation funnel and a second secondary separation funnel are respectively installed at the bottom of the first frame.

[0010] Preferably, the second crankshaft connecting rod member is arranged between one of the transverse brackets and the secondary longitudinal bracket, the bottom of the second screen is connected to a second frame, one end of the second frame is connected to the second crankshaft connecting rod member, the outer wall of one of the overhead brackets is connected to a second driving member, one end of the second crankshaft connecting rod member is connected to the shaft end of the second driving member, a second sliding rod is provided between one of the transverse brackets and the secondary longitudinal bracket, the end of the second frame is placed on the second sliding rod, and a second primary dividing funnel and a secondary dividing funnel are respectively installed at the bottom of the second frame.

[0011] Preferably, the intermittent lowering mechanism includes a second splicing frame, the second splicing frame is connected to a horizontal bracket, a base is fixedly installed on the top of the second splicing frame, a round tube is fixedly installed on the outer surface of the second splicing frame, two slide members are sleeved on the outer wall of the round tube, and a first drainage member is installed on the top of the base.

[0012] Preferably, a third driving member is installed on the outer wall of the second splicing frame, a coupling is provided on the shaft end fixing sleeve of the third driving member, a booster is inserted into the coupling, plate valves are slidably provided inside the two slide members, and the booster and the two plate valves are movably connected.

[0013] Preferably, the second screening mechanism also includes a third splicing frame, the third splicing frame is connected to the top of the load-bearing base frame, the top of the third splicing frame is fixedly installed with an annular base, the cavity is connected to the top of the annular base, a group of combined screens are fixedly connected to the cavity, a first roller bearing member is fixedly installed at the center of the annular base, the inner wall of the inner shaft of the first roller bearing member is fixedly inserted with a linkage rod, the outer wall of the linkage rod is fixedly sleeved with a group of second roller bearing members, the outer wall of the outer shaft of each of the second roller bearing members is respectively connected to a corresponding combined screen, the outer wall of the linkage rod is fixedly sleeved with a group of associated stirring members, each of the associated stirring members is respectively in contact with a corresponding combined screen, and a fourth driving member is added to the bottom of the third splicing frame, and the output end of the fourth driving member is connected to the bottom of the linkage rod.

[0014] Preferably, an external frame is spliced ​​between the outer walls of the main longitudinal bracket and the secondary longitudinal bracket, and the external frame is fixedly connected to the fan assembly. A junction box is fixedly installed on the outer surface of one of the main longitudinal brackets, and a group of square air pipes are fixedly connected to the outer surface of the junction box, and the exhaust ends of the group of square air pipes are all connected to the interior of the cavity. The output end of the fan assembly is fixedly connected to a delivery pipe, and the exhaust end of the delivery pipe is connected to the interior of the junction box.

[0015] Preferably, a recovery box is slidably provided inside the load-bearing base frame, and a plurality of partitions are equidistantly installed inside the recovery box. The plurality of partitions can divide the interior of the recovery box into a plurality of storage spaces, and a handle is fixedly installed on the outer surface of the recovery box.

[0016] Preferably, the bottom of the annular base is connected to a second guide piece, the end of the second guide piece is located above a storage space, and the outer wall of the cavity is fixedly connected to a group of transfer pipes, and the discharge end of each transfer pipe is located above a corresponding storage space.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a first screening mechanism. When the equipment is working, the ore particles initially entering the equipment will be processed by the first screening component. The ore particles in the upper layer that have not been screened will quickly separate under the action of vibration and gravity and enter the lower level of the equipment through the connected channel. The ore particles that fall vertically will be processed by the second screening component again. Since the ore particles have been processed, the structure of the ore particles entering the second screening component is more obvious, thereby ensuring that the size of the subsequent screened products is more uniform. The mechanism adopts the mechanical transmission principle, which can effectively avoid the direct discharge of some unscreened ore particles. The graded repeated screening can greatly increase the vibration screening effect of the equipment, ensure that the volume of the screened products is more uniform, and set up a perfect ore particle release channel to avoid the problem of ore particles falling due to channel blockage, thereby reducing raw material waste.

[0018] 2. The present invention sets a second screening mechanism and uses mechanical assistance to achieve physical sweeping, thereby accelerating the screening of ore particles on each screen. Finally, ore particles of different volumes stay on a corresponding screen. By constructing multiple independent channels and using high-speed airflow blowing, the transfer of ore particles staying on each screen is completed at the same time. Finally, ore particles of different volumes enter the corresponding storage space in turn. This method is an extension of the upper-level component, with the aim of further deepening the processing of ore particles that are not fully screened and maximizing the grading effect of the equipment, so that it can obtain screen products of more specifications, provide more candidates for subsequent process implementation, and assist in improving the efficiency of subsequent processes.

[0019] 3. The multiple independent air passages that can be constructed by the present invention can fully act on each independent space. On the one hand, it ensures that the ore particles retained in the multiple independent spaces can be discharged synchronously, so as to shorten the aggregation time. On the other hand, each beam of high-speed airflow is pushed horizontally into the independent space, and after being compressed by the internal cross-section of the structure, it directly acts on the built-in ore particles, so as to minimize the residual amount of ore particles in each independent space, avoid clogging the corresponding screen, and affect the subsequent screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a main structural stereogram of a multi-frequency vibration fine-grained ore screening device for mining according to the present invention; Figure 2 This is a side structural stereogram of a multi-frequency vibration fine-grained ore screening device for mining according to the present invention; Figure 3 It is an enlarged stereoscopic view of the structure of the first screening mechanism in a multi-frequency vibration fine-grained ore screening device for mining of the present invention; Figure 4 It is an enlarged stereoscopic diagram of a part of the structure of a multi-frequency vibration fine-grained ore screening device for mining of the present invention; Figure 5It is an enlarged stereoscopic view of the intermittent lowering mechanism structure in a multi-frequency vibration fine-grained ore screening device for mining of the present invention; Figure 6 The invention provides a multi-frequency vibration fine-grained ore screening device for mining. Figure 5 A magnified stereoscopic image of the structure at center A; Figure 7 It is an enlarged stereoscopic view of the structure of the second screening mechanism in a multi-frequency vibration fine-grained ore screening device for mining of the present invention; Figure 8 It is an enlarged stereoscopic view of the internal connected structure of the cavity in a multi-frequency vibration fine-grained ore screening device for mining according to the present invention.

[0021] In the figure: 1, load-bearing chassis; 2, main longitudinal support; 3, top bracket; 4, horizontal support; 5, belt conveyor; 6, first splicing frame; 7, material limit regulating frame; 8, L-shaped support; 9, feed hopper; 10, first screening mechanism; 101, first crankshaft connecting rod; 102, first frame; 103, first screen; 104, first driving member; 105, first slide bar; 106, second crankshaft connecting rod; 107, second frame; 108, second screen; 109, second driving member; 110, second slide bar; 1001, first primary funnel; 1002, first primary funnel; 1003, second primary funnel; 1004, second secondary funnel; 11, intermittent lowering mechanism; 111, second splicing frame; 112, base; 113, round Tube; 114, slide member; 115, first guide member; 116, third driving member; 117, coupling; 118, booster member; 119, plate valve; 12, second screening mechanism; 121, third splicing frame; 122, annular base; 123, cavity; 124, first roller bearing member; 125, linkage rod; 126, second roller bearing member; 127, combined screen; 128, associated stirring member; 129, external frame; 1201, fan assembly; 1202, intersection box; 1203, square air pipe; 1204, delivery pipeline; 1205, fourth driving member; 1206, second guide member; 1207, transfer pipe; 1208, recovery box; 1209, partition; 1210, handle; 13, secondary longitudinal bracket. DETAILED DESCRIPTION

[0022] 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 implementation clauses described 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 making creative work are within the scope of protection of the present invention.

[0023] Please refer to the attached Figure 1 -Attached Figure 8As shown, the present invention provides a technical solution: a multi-frequency vibration fine-grained ore screening device for mining, comprising a load-bearing base frame 1, characterized in that: a group of main longitudinal supports 2 are equidistantly assembled on the top of the load-bearing base frame 1, a top bracket 3 is assembled between the tops of a group of main longitudinal supports 2, a first screening mechanism 10, an intermittent lowering mechanism 11 and a second screening mechanism 12 are respectively arranged inside the load-bearing base frame 1, the main longitudinal supports 2 and the top bracket 3, two transverse supports 4 are assembled on the top of the load-bearing base frame 1, a secondary longitudinal support 13 is assembled between the two top brackets 3, each secondary longitudinal support 13 is respectively connected to a corresponding transverse support 4, a belt conveyor 5 is added inside the top bracket 3, a first splicing frame 6 is assembled on the top of the top bracket 3, a limited material regulating frame 7 is assembled on the top of the first splicing frame 6, two L-shaped supports 8 are assembled on the top of the limited material regulating frame 7, and a feed hopper 9 is fixedly installed between the opposite sides of the two L-shaped supports 8.

[0024] Embodiment 1, according to Figure 3-Figure 4 As shown, the first screening mechanism 10 includes a first screen 103 and a second screen 108, and the starting ends of the first screen 103 and the second screen 108 are respectively connected with the first crankshaft connecting rod 101 and the second crankshaft connecting rod 106, and the first crankshaft connecting rod 101 and the second crankshaft connecting rod 106 can drive the first screen 103 and the second screen 108 to shake at a high speed, and the unscreened material on the upper layer of the first screen 103 is transported from the end to the lower level, and the material screened by the first screen 103 continues to fall into the second screen 108 to further complete the screening. The first screening mechanism 10 also includes a first frame 102, the first frame 102 and the first screen 103 are connected, one end of the first frame 102 is connected to the first crankshaft connecting rod 101, and the first crankshaft connecting rod 101 is installed inside the overhead bracket 3, one end of the overhead bracket 3 is connected to the first slide bar 105, and the end of the first frame 102 is placed on the first slide bar 105 On the top, a first driving member 104 is connected to one side of the outer wall of the overhead bracket 3, one end of the first crankshaft connecting rod 101 is connected to the axial end of the first driving member 104, and a first initial dividing funnel 1001 and a first dividing funnel 1002 are respectively installed at the bottom of the first frame 102, a second crankshaft connecting rod 106 is arranged between a transverse bracket 4 and a secondary longitudinal bracket 13, a second frame 107 is connected to the bottom of the second screen 108, one end of the second frame 107 is connected to the second crankshaft connecting rod 106, an outer wall of an overhead bracket 3 is connected to a second driving member 109, one end of the second crankshaft connecting rod 106 is connected to the axial end of the second driving member 109, a second sliding rod 110 is provided between a transverse bracket 4 and the secondary longitudinal bracket 13, the end of the second frame 107 is placed on the second sliding rod 110, and a second initial dividing funnel 1003 and a second dividing funnel 1004 are respectively installed at the bottom of the second frame 107.

[0025] The effect achieved by the entire embodiment 1 is as follows: by presetting the above-mentioned components, the mechanism includes a total of two screening components, and is assembled in a stepped manner to achieve a grading effect. During operation, the ore particles that initially enter are processed by the first screening component, and the ore particles that have not been screened in the upper layer will quickly detach under the action of vibration and gravity, and enter the lower level of the equipment through the connected channel, and the ore particles that fall vertically will be processed again by the second screening component. Because the ore particles have been processed, the structure of the ore particles entering the second screening component is more obvious, thereby ensuring that the size of the subsequent screened products is more uniform. This method can effectively avoid the direct discharge of some unscreened ore particles, and repeated screening by grading can greatly increase the vibration screening effect of the equipment, ensuring that the volume of the screened products obtained is more uniform. Setting a perfect ore particle release channel can avoid the problem of ore particles falling due to channel blockage, thereby reducing raw material waste.

[0026] Embodiment 2, according to Figure 5-Figure 6 As shown, the intermittent lowering mechanism 11 includes a second splicing frame 111, the second splicing frame 111 is connected to a horizontal bracket 4, a base 112 is fixedly installed on the top of the second splicing frame 111, a round tube 113 is fixedly installed on the outer surface of the second splicing frame 111, the outer wall of the round tube 113 is sleeved with two slide members 114, a first guide member 115 is installed on the top of the base 112, and a third driving member 116 is additionally installed on the outer wall of the second splicing frame 111, a coupling 117 is fixedly sleeved on the axial end of the third driving member 116, a booster member 118 is inserted in the coupling 117, and a plate valve 119 is slidably provided inside the two slide members 114, and the booster member 118 and the two plate valves 119 are movably connected.

[0027] The effect achieved by the entire embodiment 2 is: by presetting the above-mentioned components, since most of the ore particles will be fully screened out by the upper structure, and the cross-sectional area of ​​the transition container is large, the temporary storage of the ore particles can be achieved, and the purpose of intermittent discharge can be achieved through the coordination of relevant mechanical parts, assisting the lower structure to ensure the adequacy of subsequent ore particle processing.

[0028] Embodiment 3, according to Figure 7-Figure 8As shown, the second screening mechanism 12 includes a cavity 123 and a group of combined screens 127. The group of combined screens 127 can divide the interior of the cavity 123 into a plurality of independent spaces. A fan assembly 1201 is provided on the outside of the cavity 123. The material that is not fully screened at the end of the first screen 103 can enter the cavity 123. The apertures in the group of combined screens 127 tend to decrease from top to bottom. The material screened by each combined screen 127 is retained in a corresponding space. The fan assembly 1201 is connected to an air passage equal to the number of independent spaces, and After the material is screened, the material is pneumatically discharged. The second screening mechanism 12 also includes a third splicing frame 121, which is connected to the top of the load-bearing base frame 1. The top of the third splicing frame 121 is fixedly installed with an annular bottom bracket 122, and the cavity 123 is connected to the top of the annular bottom bracket 122. A group of combined screens 127 are fixedly connected to the cavity 123. A first roller bearing member 124 is fixedly installed at the center of the third splicing frame 122. The inner surface wall of the inner shaft of the first roller bearing member 124 is fixedly plugged with a linkage rod 125. The linkage rod 125 A group of second roller bearing members 126 are fixedly sleeved on the outer wall, and the outer wall of the outer shaft of each second roller bearing member 126 is respectively connected to a corresponding combined screen 127. A group of associated stirring members 128 are fixedly sleeved on the outer wall of the linkage rod 125, and each associated stirring member 128 is respectively in contact with a corresponding combined screen 127. A fourth driving member 1205 is installed at the bottom of the third splicing frame 121, and the output end of the fourth driving member 1205 is connected to the bottom of the linkage rod 125. A recovery box 1208 is slidably provided inside the load-bearing base frame 1. A plurality of partitions 1209 are equidistantly installed inside the recovery box 1208, and the plurality of partitions 1209 can divide the interior of the recovery box 1208 into a plurality of storage spaces. A handle 1210 is fixedly installed on the outer surface of the recovery box 1208. The bottom of the third splicing frame 121 is connected to a second guide piece 1206, and the end of the second guide piece 1206 is located above a storage space. The outer wall of the cavity 123 is fixedly connected to a group of transfer pipes 1207, and the discharge end of each transfer pipe 1207 is respectively located above a corresponding storage space.

[0029] The effect achieved by the entire embodiment 3 is as follows: by presetting the above-mentioned components, the ore particles that have not been thoroughly screened in the upper layer enter the mechanism, and with the help of mechanical assistance, the screening of the ore particles on each screen is accelerated by sweeping, and finally the ore particles of different volumes stay on the corresponding screen, and by constructing multiple independent channels and using high-speed airflow blowing, the transfer of the ore particles staying on each screen is completed at the same time, and finally the ore particles of different volumes enter the corresponding storage space in turn. This method is extended on the basis of the upper-level components, and aims to further deepen the processing of ore particles that are not fully screened, and maximize the grading effect of the equipment, so that it can obtain screen products of more specifications, provide more candidates for subsequent process implementation, and assist in improving the efficiency of subsequent processes.

[0030] Embodiment 4, according to Figure 7-Figure 8 As shown, an external frame 129 is spliced ​​between the outer walls of a main longitudinal support 2 and a secondary longitudinal support 13, and the external frame 129 is fixedly connected to the fan assembly 1201. A junction box 1202 is fixedly installed on the outer surface of a main longitudinal support 2. A group of square air pipes 1203 are fixedly connected to the outer surface of the junction box 1202. The exhaust ends of the group of square air pipes 1203 are all connected to the interior of the cavity 123. The output end of the fan assembly 1201 is fixedly connected to a delivery pipe 1204, and the exhaust end of the delivery pipe 1204 is connected to the interior of the junction box 1202.

[0031] The effect achieved by the entire embodiment 4 is as follows: by presetting the above-mentioned components, the multiple independent airways constructed can fully act on each independent space. On the one hand, it ensures that the ore particles retained in the multiple independent spaces can be discharged synchronously, thereby achieving the purpose of shortening the aggregation time; on the other hand, each beam of high-speed airflow is pushed horizontally into the independent space, and after being compressed through the cross-section inside the structure, it directly acts on the built-in ore particles, thereby maximizing the reduction of the residual amount of ore particles in each independent space, avoiding clogging of the corresponding screen and affecting the subsequent screening efficiency.

[0032] The working principle of the whole equipment is as follows: in the preparation stage, the equipment is first moved to the designated work area, and the bottom of the load-bearing chassis 1 is fully in contact with the ground, and then the external line is connected to the power supply of the equipment, in order to provide energy for the multiple electrical components therein; In the first screening stage, the belt conveyor 5 is turned on, and the belt on its surface rotates at a uniform speed. The ore particles to be screened are continuously injected into the interior of the feed hopper 9. The discharge range is limited by the material limiting control frame 7 to ensure that the ore particles that fall naturally will not be scattered. During this period, the first driving member 104 and the second driving member 109 are synchronously turned on to drive the first crankshaft connecting rod member 101 and the second crankshaft connecting rod member 106 to rotate mechanically respectively. The first frame 102 and the first slide bar 105 and the second frame 107 and the second slide bar 110 are connected flexibly to drive the first screen 103 and the second screen 108 to stretch and vibrate, and the ore particles transported by the belt conveyor 5 are continuously The ore particles continue to fall onto the first screen 103, and after mechanical vibration, the upper part of the ore particles freely slide to the end of the first frame 102, and flow into the first sub-funnel 1002, and fall from the end to the lower level, while the ore particles screened by the first screen 103 continue to be drained from the first primary funnel 1001 to the second screen 108, and further complete the screening. The ore particles of different volumes in this structure are fully revealed, and the ore particles of larger volume continue to gather in the second sub-funnel 1004 under the vibration effect, and the ore particles screened by the second screen 108 continue to flow into the second primary funnel 1003, and finally discharged from the external pipes of the two. In the transfer stage, the ore particles falling from the first distribution funnel 1002 are fully drained into the interior of the circular tube 113 through the first drainage member 115. When the interior of the circular tube 113 is filled, the third driving member 116 is opened and acts on the coupling 117 to drive the booster 118 to rotate a certain angle, driving the two plate valves 119 to slide in the corresponding set of slideway members 114, blocking the upper part of the circular tube 113 and opening the bottom channel of the circular tube 113. Then, the ore particles in it quickly fall into the cavity 123, and some of the ore particles that continue to be lowered are temporarily retained in the upper part of the circular tube 113. After being completely released, the components are reset, and the circular tube 113 continues to reel in the material. Then, the fourth driving member 1205 is opened, and the physical properties of the first roller bearing member 124 and the second roller bearing member 126 are utilized to directly act on the linkage rod. 125, drives the connected multiple associated stirring members 128 to rotate at a uniform speed, continuously pushes the ore particles on a corresponding combined screen 127, according to the aperture setting of each combined screen 127, the volume of the ore particles after screening decreases from top to bottom, and the ore particles in the bottom layer can be stirred by a corresponding associated stirring member 128, continuously gather to the second guide member 1206, and finally discharged to a corresponding storage space, after the screening time is reached, turn on the fan assembly 1201, and the high-speed gas generated continuously flows into the intersection box 1202, forcing the internal air pressure to gradually increase, and can evenly squeeze part of the high-speed gas into each square air pipe 1203, and blow it horizontally to a corresponding independent space, start the transfer of multiple layers of ore particles, and sequentially transport them to a corresponding storage space through a corresponding transfer pipe 1207.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-frequency vibration fine-grained ore screening device for mining, comprising a load-bearing base frame (1), characterized in that: A group of main longitudinal supports (2) are assembled at equal distances on the top of the load-bearing base frame (1), and a top bracket (3) is assembled between the tops of the group of main longitudinal supports (2); The load-bearing base frame (1), the main longitudinal support (2) and the top bracket (3) are respectively provided with a first screening mechanism (10), an intermittent lowering mechanism (11) and a second screening mechanism (12); A first screening mechanism (10), the first screening mechanism (10) comprising a first screen (103) and a second screen (108), the starting ends of the first screen (103) and the second screen (108) being respectively connected to a first crankshaft connecting rod (101) and a second crankshaft connecting rod (106), the first crankshaft connecting rod (101) and the second crankshaft connecting rod (106) being capable of driving the first screen (103) and the second screen (108) to vibrate at high speed, the unscreened material on the upper layer of the first screen (103) being transported from the end to the lower layer, and the screened material on the first screen (103) continuously falling into the second screen (108), thereby further completing the screening; A second screening mechanism (12), the second screening mechanism (12) comprising a cavity (123) and a group of combined screens (127), the group of combined screens (127) being able to divide the interior of the cavity (123) into a plurality of independent spaces, a fan assembly (1201) being provided on the outside of the cavity (123), materials that are not fully screened at the end of the first screen (103) being able to enter the cavity (123), the apertures in the group of combined screens (127) decreasing from top to bottom, materials screened by each combined screen (127) being retained in a corresponding space, the fan assembly (1201) being connected to an air passage having a number equal to the number of independent spaces, and pneumatically discharging the materials after screening.

2. The multi-frequency vibration fine-grained ore screening device for mining according to claim 1 is characterized in that: Two transverse brackets (4) are assembled on the top of the load-bearing base frame (1), and a secondary longitudinal bracket (13) is assembled between the two top brackets (3). Each of the secondary longitudinal brackets (13) is connected to a corresponding transverse bracket (4). A belt conveyor (5) is installed inside the top bracket (3). A first splicing frame (6) is assembled on the top of the top bracket (3). A limited material regulating frame (7) is assembled on the top of the first splicing frame (6). Two L-shaped brackets (8) are assembled on the top of the limited material regulating frame (7), and a feed hopper (9) is fixedly installed between opposite sides of the two L-shaped brackets (8).

3. The multi-frequency vibration fine-grained ore screening device for mining according to claim 1, characterized in that: The first screening mechanism (10) further comprises a first frame (102), wherein the first frame (102) is connected to a first screen (103), one end of the first frame (102) is connected to a first crankshaft connecting rod (101), the first crankshaft connecting rod (101) is installed inside a top bracket (3), one end of the top bracket (3) is connected to a first slide bar (105), the end of the first frame (102) is placed on the first slide bar (105), one side of an outer wall of the top bracket (3) is connected to a first driving member (104), one end of the first crankshaft connecting rod (101) is connected to an axial end of the first driving member (104), and a first primary separation funnel (1001) and a second primary separation funnel (1002) are respectively installed at the bottom of the first frame (102).

4. The multi-frequency vibration fine-grained ore screening device for mining according to claim 2, characterized in that: The second crankshaft connecting rod (106) is arranged between one of the transverse brackets (4) and the secondary longitudinal bracket (13); the bottom of the second screen (108) is connected to a second frame (107); one end of the second frame (107) is connected to the second crankshaft connecting rod (106); the outer wall of one of the top brackets (3) is connected to a second driving member (109); one end of the second crankshaft connecting rod (106) is connected to the shaft end of the second driving member (109); a second sliding rod (110) is arranged between one of the transverse brackets (4) and the secondary longitudinal bracket (13); the end of the second frame (107) is placed on the second sliding rod (110); and a second primary separation funnel (1003) and a secondary separation funnel (1004) are respectively installed at the bottom of the second frame (107).

5. The multi-frequency vibration fine-grained ore screening device for mining according to claim 2, characterized in that: The intermittent lowering mechanism (11) comprises a second splicing frame (111), the second splicing frame (111) being connected to a transverse support (4), a base (112) being fixedly mounted on the top of the second splicing frame (111), a round tube (113) being fixedly mounted on the outer surface of the second splicing frame (111), two slide members (114) being sleeved on the outer surface wall of the round tube (113), and a first guide member (115) being mounted on the top of the base (112).

6. The multi-frequency vibration fine-grained ore screening device for mining according to claim 5, characterized in that: The outer wall of the second splicing frame (111) is additionally provided with a third driving member (116); a shaft end fixing sleeve of the third driving member (116) is provided with a coupling (117); a boosting member (118) is inserted into the coupling (117); plate-type valves (119) are slidably provided inside the two slide members (114); and the boosting member (118) and the two plate-type valves (119) are movably connected.

7. The multi-frequency vibration fine-grained ore screening device for mining according to claim 1, characterized in that: The second screening mechanism (12) further comprises a third splicing frame (121), the third splicing frame (121) being connected to the top of the load-bearing base frame (1), an annular base bracket (122) being fixedly mounted on the top of the third splicing frame (121), the cavity (123) being connected to the top of the annular base bracket (122), a group of combined screens (127) being fixedly connected to the cavity (123), a first roller bearing member (124) being fixedly mounted at the center of the annular base bracket (122), a linkage rod (125) being fixedly plugged into the inner surface wall of the inner shaft of the first roller bearing member (124), and the A group of second roller bearing members (126) are fixedly sleeved on the outer wall of the linkage rod (125), and the outer wall of the outer shaft of each of the second roller bearing members (126) is respectively connected to a corresponding combined screen (127). A group of associated stirring members (128) are fixedly sleeved on the outer wall of the linkage rod (125), and each of the associated stirring members (128) is respectively in contact with a corresponding combined screen (127). A fourth driving member (1205) is additionally installed at the bottom of the third splicing frame (121), and the output end of the fourth driving member (1205) is connected to the bottom of the linkage rod (125).

8. The multi-frequency vibration fine-grained ore screening device for mining according to claim 2, characterized in that: An external frame (129) is spliced ​​between the outer walls of the main longitudinal support (2) and the secondary longitudinal support (13); the external frame (129) is fixedly connected to the fan assembly (1201); a junction box (1202) is fixedly installed on the outer surface of the main longitudinal support (2); a group of square air pipes (1203) are fixedly connected to the outer surface of the junction box (1202); the exhaust ends of the group of square air pipes (1203) are all connected to the interior of the cavity (123); the output end of the fan assembly (1201) is fixedly connected to a delivery pipe (1204); the exhaust end of the delivery pipe (1204) is connected to the interior of the junction box (1202).

9. The multi-frequency vibration fine-grained ore screening device for mining according to claim 7, characterized in that: A recovery box (1208) is slidably provided inside the load-bearing base frame (1), and a plurality of partitions (1209) are equidistantly installed inside the recovery box (1208). The plurality of partitions (1209) can divide the interior of the recovery box (1208) into a plurality of material storage spaces, and a handle (1210) is fixedly installed on the outer surface of the recovery box (1208).

10. The multi-frequency vibration fine-grained ore screening device for mining according to claim 9, characterized in that: The bottom of the annular base (122) is connected to a second guide member (1206), the end of which is located above a material storage space. The outer wall of the cavity (123) is fixedly connected to a group of transfer pipes (1207), and the discharge end of each transfer pipe (1207) is located above a corresponding material storage space.

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