A mineral sample screening device

Abstract

This utility model discloses an ore sample screening device, relating to the field of ore sample screening technology. It includes a screening box with a drum rotatably mounted on its inner wall. A secondary screening mechanism is located inside the screening box and below the drum. A first motor is mounted on the top of the screening box, and a stirring shaft acting on the inner side of the drum is fixed at the output end of the first motor. It also includes a drive mechanism for simultaneously driving the drum and the secondary screening mechanism. This utility model, through the dual action of the drum's forward rotation and the stirring blades' reverse stirring, can fully agitate and disperse the ore sample, effectively preventing ore accumulation and blockage, significantly improving the efficiency of ore meeting particle size requirements passing through the through-hole, and greatly improving the separation efficiency of ore particles. The screen frame, under the cooperation of a cam and a spring, performs high-frequency reciprocating vibration, enabling precise re-grading of the ore falling from the drum, ensuring effective separation of ores of different particle sizes.

Description

Technical Field

[0001] This utility model relates to the field of ore sample screening technology, specifically to an ore sample screening device. Background Technology

[0002] Mineral exploration is a practical geology that studies the geological conditions for the formation and distribution of minerals, the occurrence patterns of mineral deposits, the characteristics of ore body changes, and the most effective methods for identifying and evaluating industrial mineral deposits. It has strong comprehensiveness and practicality and is a comprehensive embodiment of geological science and economic science. Generally, ore sampling and analysis are required during mineral exploration.

[0003] Existing ore sample screening devices tend to accumulate minerals on one side during the screening process, failing to distribute them evenly across the entire screen surface. This can easily lead to ore blockage and low screening efficiency. Furthermore, some devices can only screen a single particle size, making it difficult to meet the graded screening requirements of ore samples under different analytical needs. To address these issues, there is an urgent need for an ore sample screening device that can achieve efficient graded screening, has a simple structure, and is easy to operate, in order to meet the actual needs of ore sample screening in mineral exploration. Utility Model Content

[0004] The purpose of this invention is to provide a mineral sample screening device, which aims to solve the problems of low screening efficiency and inability to perform multi-stage screening in the aforementioned background technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ore sample screening device, comprising a screening box, an inlet at the top of the screening box, a slag collection mechanism at the bottom of the screening box, a roller rotatably mounted on the inner wall of the screening box, the roller comprising a cylindrical shell with openings at both ends and a cover detachably mounted at the bottom of the cylindrical shell, the cover having multiple sets of through holes for ore passage, a secondary screening mechanism located inside the screening box and below the roller, a first motor fixedly mounted on the top of the screening box, the output end of the first motor passing through the screening box and fixedly connected to a stirring shaft acting on the inner side of the roller, stirring blades fixedly connected to the outer surface of the stirring shaft, and a drive mechanism for simultaneously driving the roller and the secondary screening mechanism inside the screening box.

[0006] Furthermore, the secondary screening mechanism includes a screen frame, and symmetrical grooves are provided on the inner walls of the front and rear opposite sides of the screening box. The front and rear sides of the screen frame are slidably connected to the grooves through sliding plates. Multiple sets of springs are fixedly installed between the right side of the screen frame and the inner wall of the screening box, and both ends of the springs are sleeved on the column heads.

[0007] Furthermore, the driving mechanism includes a second motor, a rotating shaft, a cam, and a spur gear. The second motor is fixedly installed inside the screening box and located on the left side of the screen frame. The rotating shaft is vertically arranged and rotatably connected inside the screening box. The second motor is driven by the rotating shaft. The rotating shaft is fixedly installed with a spur gear for driving the drum to rotate and a cam for squeezing the screen frame. A rack that meshes with the spur gear is fixedly connected to the outer wall of the drum. A protrusion that cooperates with the cam is fixedly installed on the left side of the screen frame.

[0008] Furthermore, the slag collection mechanism includes a collection box, which is slidably connected to the bottom of the screening box, and a conical guide port for cooperating with the collection box is provided on the bottom wall of the screening box.

[0009] Furthermore, the screening box has a hinged door on the front side and a control panel on the side wall, which is electrically connected to the first motor and the second motor respectively.

[0010] This utility model has the following beneficial effects:

[0011] This invention provides a mineral sample screening device. Through the dual action of the forward rotation of the drum and the reverse stirring of the agitator blades, the mineral sample can be fully turned over and dispersed, effectively avoiding ore accumulation and blockage, greatly improving the efficiency of passing minerals that meet the particle size requirements through the through holes, and significantly improving the separation efficiency of mineral particles. The screen frame performs high-frequency reciprocating vibration under the cooperation of cam and spring, which can accurately classify the minerals falling from the drum again, ensuring that minerals of different particle sizes are effectively separated. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the internal structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 3 This is a top view of the sieve frame structure in this utility model;

[0015] Figure 4 This is a schematic diagram of the assembly of the sieve frame in this utility model;

[0016] In the diagram: 1. Screening box; 2. Feed inlet; 3. Drum; 4. First motor; 5. Agitator shaft; 6. Agitator blade; 7. Screen frame; 8. Spring; 9. Second motor; 10. Rotating shaft; 11. Cam; 12. Spur gear; 13. Rack; 14. Collection box; 15. Conical guide port; 16. Box door; 17. Control panel. Detailed Implementation

[0017] like Figures 1 to 4As shown, an ore sample screening device includes a screening box 1 with a feed inlet 2 at the top and a slag collection mechanism at the bottom. A roller 3 is rotatably mounted on the inner wall of the screening box 1. The roller 3 includes a cylindrical shell with openings at both ends and a cover detachably mounted on the bottom of the cylindrical shell. The cover has multiple sets of through holes for ore to pass through. A secondary screening mechanism is located inside the screening box 1 and below the roller 3. A first motor 4 is fixedly mounted on the top of the screening box 1. The output end of the first motor 4 passes through the screening box 1 and is fixedly connected to a stirring shaft 5 that acts on the inner side of the roller 3. A stirring blade 6 is fixedly connected to the outer surface of the stirring shaft 5. The screening box 1 also includes a drive mechanism for simultaneously driving the roller 3 and the secondary screening mechanism. The first motor 4 drives the stirring shaft 5 to rotate, stirring and turning the ore inside the roller 3 to prevent ore accumulation and blockage, while accelerating the ore that meets the particle size requirements to fall through the through holes. The rotation direction of the stirring shaft 5 is opposite to the rotation direction of the roller 3, further improving the screening efficiency of the ore sample.

[0018] The secondary screening mechanism includes a screen frame 7. Slide grooves are symmetrically opened on the inner walls of the front and rear opposite sides of the screening box 1. The front and rear sides of the screen frame 7 are slidably connected to the slide grooves through sliding plates. Multiple sets of springs 8 are fixedly installed between the right side of the screen frame and the inner wall of the screening box 1. Both ends of the springs 8 are sleeved on the column heads. A protrusion that cooperates with the cam 11 is fixedly installed on the left side of the screen frame 7.

[0019] The drive mechanism includes a second motor 9, a rotating shaft 10, a cam 11, and a spur gear 12. The second motor 9 is fixedly installed inside the screening box 1 and located on the left side of the screen frame 7. The rotating shaft 10 is vertically arranged and rotatably connected inside the screening box 1. The second motor 9 is connected to the rotating shaft 10 for transmission. The rotating shaft 10 is fixedly installed with a spur gear 12 for driving the rotation of the drum 3 and a cam 11 for squeezing the screen frame 7. A rack 13 that meshes with the spur gear is fixedly connected to the outer wall of the drum 3. When the cam 11 rotates, it periodically squeezes the protrusion on the left side of the screen frame 7. Combined with the elastic restoring force of the spring 8 on the right side of the screen frame 7, the screen frame 7 reciprocates in the horizontal direction, generating high-frequency vibration. The ore that falls after being screened by the drum 3 is reclassified under the vibration of the screen frame 7. Smaller particles of ore fall through the screen frame into the collection mechanism below.

[0020] The slag collection mechanism includes a pull-out collection box 14, which is slidably connected to the bottom of the screening box 1. A conical guide port 15 is provided on the bottom wall of the screening box 1 to cooperate with the collection box 14. The conical guide port 15 guides the screened slag to fall accurately into the collection box 14. The sliding design of the collection box 14 makes it easy to remove and clean.

[0021] The screening box 1 has a door 16 hinged to the front and a control panel 17 on the side wall. The control panel 17 is electrically connected to the first motor 4 and the second motor 9 respectively.

[0022] The specific operation process of this utility model is as follows:

[0023] Power the equipment by connecting to an external power source. Put the ore sample into the drum 3 through the feed port 2 at the top of the screening box 1. Start the first motor 4 through the control panel 17 to drive the stirring blades 6 on the stirring shaft 5 to rotate and stir the ore. At the same time, the second motor 9 drives the rotating shaft 10 to rotate. The spur gear 12 meshes with the rack on the outside of the drum 3 to drive the drum 3 to rotate.

[0024] The ore is stirred and rotated inside the drum 3. Ore that meets the particle size requirements falls through the through holes in the side and bottom walls of the drum 3 to the secondary screening mechanism below. The cam 11, which rotates with the rotating shaft 10, periodically squeezes the protrusion on the left side of the screen frame 7. Under the action of the thrust of the protrusion and the elastic force of the spring 8 on the right side, the screen frame 7 vibrates back and forth along the chute. The ore falling from the drum 3 is vibrated and screened on the screen frame 7. Smaller particles of ore pass through the screen frame 7 and fall into the collection box 14 through the conical guide port 15.

[0025] When the collection box 14 is full, the equipment can be paused, the box door 16 can be opened to remove the collection box 14, clean it and reinstall it; after the ore sample screening is completed, the first motor 4 and the second motor 9 can be turned off through the control panel 17. After the equipment has completely stopped, the box door 16 can be opened to remove the ore in the screen frame 7 first, and then the bottom plate of the drum 3 can be opened to remove the ore inside.

Claims

1. A ore sample screening device, comprising a screening box (1), wherein a feed inlet (2) is provided at the top of the screening box (1), and a slag collection mechanism is provided at the bottom of the screening box (1), characterized in that: The inner wall of the screening box (1) is rotatably mounted with a drum (3). The drum (3) includes a cylindrical shell with openings at both ends and a cover that is detachably mounted at the bottom of the cylindrical shell. The cover has multiple sets of through holes for ore to pass through. A secondary screening mechanism is provided inside the screening box (1) and below the drum (3). A first motor (4) is fixedly mounted on the top of the screening box (1). The output end of the first motor (4) passes through the screening box (1) and is fixedly connected to a stirring shaft (5) that acts on the inner side of the drum (3). A stirring blade (6) is fixedly connected to the outer surface of the stirring shaft (5). The screening box (1) also includes a drive mechanism for simultaneously driving the drum (3) and the secondary screening mechanism.

2. The ore sample screening device according to claim 1, characterized in that, The secondary screening mechanism includes a screen frame (7). The inner walls of the screen box (1) on both sides are symmetrically provided with sliding grooves. The screen frame (7) is slidably connected to the sliding grooves on both sides through sliding plates. Multiple sets of springs (8) are fixedly installed between the right side of the screen frame and the inner wall of the screen box (1). Both ends of the springs (8) are sleeved on the column heads.

3. The ore sample screening device according to any one of claims 1-2, characterized in that, The driving mechanism includes a second motor (9), a rotating shaft (10), a cam (11), and a spur gear (12). The second motor (9) is fixedly installed inside the screening box (1) and located on the left side of the screen frame (7). The rotating shaft (10) is vertically arranged and rotatably connected inside the screening box (1). The second motor (9) is connected to the rotating shaft (10) in a transmission connection. The rotating shaft (10) is fixedly installed with a spur gear (12) for driving the drum (3) to rotate and a cam (11) for squeezing the screen frame (7). The outer wall of the drum (3) is fixedly connected with a rack (13) that meshes with the spur gear. The left side of the screen frame (7) is fixedly installed with a protrusion that cooperates with the cam.

4. The ore sample screening device according to claim 1, characterized in that, The slag collection mechanism includes a collection box (14), which is slidably connected to the bottom of the screening box (1). A conical guide port (15) for cooperating with the collection box (14) is provided on the bottom wall of the screening box (1).

5. The ore sample screening device according to claim 1, characterized in that, The screening box (1) has a door (16) hinged to the front and a control panel (17) on the side wall. The control panel (17) is electrically connected to the first motor (4) and the second motor (9) respectively.

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