Heavy sand mineral grinding and screening equipment

Abstract

The utility model relates to the technical field of heavy sand ore screening, and discloses heavy sand ore grinding and screening equipment which comprises a screen drum and a material box, the material box is installed on the front portion of the screen drum, two compression rollers are movably installed in the material box, a screening mechanism is installed at the position, close to the rear end, of the bottom of the screen drum, and cleaning mechanisms are installed on the two sides of the screen drum. The screening mechanism comprises a supporting frame and two bottom frames, the supporting frame is installed at the bottom of a screen drum, the screen drum is located on the top of the supporting frame, supported by a supporting roller and driven by a motor to rotate, the two bottom frames are located on the two sides of the supporting frame and connected through a first hinge shaft close to the front end, and an inclined plate is installed at the bottom of the supporting frame. By means of the structure, heavy sand minerals can be crushed conveniently, powdery and small-particle materials can be screened conveniently, use of a vibration machine is reduced, meanwhile, screen holes blocked in the screen drum can be cleaned continuously, the screening efficiency is improved, and abrasion to the screen drum is reduced through rolling of the rolling brush.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy sand ore screening, in particular to heavy sand ore grinding and screening equipment. Background Art

[0002] Heavy sand minerals are minerals with high density and not easily weathered and eroded. Common heavy sand minerals include iron ore, aluminum ore, niobium ore, tantalum ore, etc. They are commonly found in various sedimentary rocks. These heavy sand minerals have high economic value.

[0003] Publication number CN221433826U discloses an ore screening machine comprising a machine housing, a tilted screening plate secured to the upper portion of the housing by a spring, the screening plate being connected to a tilted first guide plate via a connecting post, a tilted screening drum mounted in the middle portion of the housing, and a second guide plate secured to the side wall of the housing near the lower end of the first guide plate.

[0004] The above-mentioned screening machine has multiple screening functions, which ensures the screening differentiation effect. However, these heavy sand ores need to be screened out by vibration, and it is inconvenient to adjust the inclination angle of the screen drum for different degrees of screening. During the screening process, some material particles are easily blocked in the sieve holes of the screen drum, and the fixed roller brush is easy to cause wear on the outer surface of the screen drum. Utility Model Content

[0005] The purpose of the utility model is to provide a heavy sand mineral grinding and screening device to solve the technical problems in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A heavy sand mineral grinding and screening equipment comprises a screen drum and a material box, the material box is installed in the front part of the screen drum, two pressure rollers are movably installed inside the material box, a screening mechanism is installed at the rear end of the bottom of the screen drum, and a cleaning mechanism is installed on both sides of the screen drum, the screening mechanism comprises a support frame and two base frames, the support frame is installed at the bottom of the screen drum, the screen drum is located at the top of the support frame and is supported by support rollers and driven to rotate by a motor, the two base frames are located on both sides of the support frame and are connected by a first hinge shaft at the front end, an inclined plate is installed at the bottom of the support frame, a material guide plate is installed at the rear end of the inclined plate, and two hydraulic cylinders are installed at the rear end of the bottom of the support frame, and second hinge shafts are installed between the hydraulic cylinder, the base frame and the support frame.

[0008] Preferably, the two pressing rollers are driven to rotate by a motor, and the support frame is located between the two base frames and is movably rotatable.

[0009] Preferably, the height of the rear end of the inclined plate is lower than the height of the front end, and the material guide plate is located at the rear end of the inclined plate and is inclined.

[0010] Preferably, the hydraulic cylinder is located between the base frame and the support frame and is movably connected via a second hinge shaft.

[0011] Preferably, the cleaning mechanism includes two side plates, which are respectively fixedly mounted on both sides of the top of the support frame, and two support rods are fixedly mounted on the outer sides of the two side plates, and a pressure rod is movably mounted on the outer ends of the support rods, and a roller brush is movably mounted between the two pressure rods on both sides, and a third hinge is installed between the pressure rod and the support rod, and a spring is connected and installed between the middle part of the pressure rod and the support rod.

[0012] Preferably, the support rods and the side panels are perpendicular to each other, and the tops of the pressure rods and support rods are inclined.

[0013] Preferably, the two ends of the roller brush are movably connected to the two pressure rods via a rotating shaft, and the pressure rod is movably connected to the support rod via a third hinge shaft.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1) The grinding and screening equipment is equipped with a screening mechanism. The crushed heavy sand minerals enter the screen drum. The rotation of the pressure roller and the screen drum in the material box facilitates the crushing of the heavy sand minerals and the screening of powdered and small particle materials, reducing the use of vibrating machines. The two hydraulic cylinders drive the support frame to rotate and tilt, and the inclination angle of the screen drum can be adjusted. It is suitable for screening different heavy sand minerals and improving the screening quality.

[0016] 2) The grinding and screening equipment is equipped with a cleaning mechanism, and the roller brush is located on the surface of the screen drum. Through the rotation of the screen drum and the roller brush, the blocked sieve holes in the screen drum can be continuously cleaned, thereby improving the screening efficiency and reducing the manual cleaning operation. The pressure rod rotates downward under the action of the spring tension, which can make the roller brush always close to the outer surface of the screen drum, and the rolling of the roller brush can reduce the wear on the screen drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a heavy sand mineral grinding and screening device in an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the rear structure of the screening mechanism in the embodiment of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the cleaning mechanism in an embodiment of the present utility model;

[0020] Figure 4 It is a side view of the entire embodiment of the present utility model.

[0021] In the figure: 1. Screen drum; 2. Material box; 3. Pressing roller; 4. Screening mechanism; 5. Cleaning mechanism; 6. Support frame; 7. Base frame; 8. First hinge shaft; 9. Inclined plate; 10. Material guide plate; 11. Hydraulic cylinder; 12. Second hinge shaft; 13. Side plate; 14. Support rod; 15. Pressing rod; 16. Rolling brush; 17. Third hinge shaft; 18. Spring. 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 embodiments 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 efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] Combine Figure 1-Figure 4 A heavy sand mineral grinding and screening equipment includes a screen drum 1 and a material box 2. The material box 2 is installed in the front of the screen drum 1. Two pressure rollers 3 are movably installed inside the material box 2. A screening mechanism 4 is installed at the rear end of the bottom of the screen drum 1, and cleaning mechanisms 5 are installed on both sides of the screen drum 1.

[0025] See Figure 2 , it is further obtained that the screening mechanism 4 includes a support frame 6 and two base frames 7. The support frame 6 is installed at the bottom of the screen drum 1. The screen drum 1 is located on the top of the support frame 6 and is supported by support rollers and driven to rotate by a motor. The two base frames 7 are located on both sides of the support frame 6 and are connected by a first hinge shaft 8 at the front end. An inclined plate 9 is installed at the bottom of the support frame 6, and a material guide plate 10 is installed at the rear end of the inclined plate 9. Two hydraulic cylinders 11 are installed at the rear end of the bottom of the support frame 6, and a second hinge shaft 12 is installed between the hydraulic cylinder 11 and the base frame 7 and the support frame 6.

[0026] The two pressing rollers 3 are driven to rotate by a motor, and the support frame 6 is located between the two base frames 7 and is movably rotatable.

[0027] The height of the rear end of the inclined plate 9 is lower than that of the front end, and the material guide plate 10 is located at the rear end of the inclined plate 9 and is inclined.

[0028] The hydraulic cylinder 11 is located between the base frame 7 and the support frame 6 and is movably connected via a second hinge shaft 12 .

[0029] Specifically, granite heavy sand minerals are added to the material box 2, and the pressure roller 3 is driven by the motor to rotate, and the granite is ground into particles and powder, and enters the screen drum 1. The screen drum 1 is tilted by the extension and contraction of two hydraulic cylinders 11, and the support roller is driven by the motor to rotate the screen drum 1. The powder and fine particles of sand ore pass through the sieve holes of the screen drum 1 and fall onto the inclined plate 9, and the large particles of sand ore are discharged through the rear end of the screen drum 1.

[0030] Example 2

[0031] See Figure 3 , and on the basis of Example 1, it is further obtained that the cleaning mechanism 5 includes two side plates 13, the two side plates 13 are fixedly installed on the top of the support frame 6 on both sides, two support rods 14 are fixedly installed on the outer sides of the two side plates 13, and a pressure rod 15 is movably installed on the outer end of the support rod 14. A roller brush 16 is movably installed between the two pressure rods 15 on both sides, a third hinge shaft 17 is installed between the pressure rod 15 and the support rod 14, and a spring 18 is connected and installed between the middle part of the pressure rod 15 and the support rod 14.

[0032] The support rod 14 and the side plate 13 are perpendicular to each other, and the top of the pressure rod 15 and the support rod 14 are inclined.

[0033] The two ends of the roller brush 16 are movably connected to the two pressure rods 15 via a rotating shaft, and the pressure rod 15 is movably connected to the support rod 14 via a third hinge shaft 17 .

[0034] Specifically, the top of the pressure rod 15 rotates downward under the tension of the spring 18, so that the roller brush 16 is in close contact with the outer surface of the screen drum 1. Through the rotation of the screen drum 1 and the rolling of the roller brush 16, the material blocked in the sieve holes of the screen drum 1 is cleaned.

[0035] In actual operation, the heavy sand mineral containing Nb-Ta is crushed by the pressure roller 3 in the material box 2, and the crushed material enters the screen drum 1 for screening. The pressure roller 3 and the screen drum 1 are driven by a motor;

[0036] When adjusting the inclination angle of the screen drum 1, the two hydraulic cylinders 11 are started at the same time, the telescopic rods of the hydraulic cylinders 11 are contracted to make the rear end of the support frame 6 drop, the base frame 7 and the support frame 6 are movably connected to each other through the first hinge shaft 8 and rotated, and the upper and lower ends of the hydraulic cylinders 11 are movably connected to each other through the second hinge shaft 12 and rotated accordingly, thereby changing the inclination angle of the screen drum 1 to adapt to the screening of different heavy sand minerals. Powder and small particles are screened by the screen drum 1 and fall onto the inclined plate 9, and large particles are discharged through the rear end of the screen drum 1;

[0037] When cleaning the outer surface of the sieve drum 1, during the rotation and screening process of the sieve drum 1, the pressure rod 15 and the support rod 14 are connected by the third hinge shaft 17, and the top end of the pressure rod 15 rotates downward under the tension of the spring 18, so that the roller brush 16 is close to the outer surface of the drum 1, and the blocked sieve holes in the sieve drum 1 are cleaned one by one through the roller brush 16.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy sand mineral grinding and screening device, comprising a screen drum (1) and a material box (2), wherein the material box (2) is mounted in front of the screen drum (1), and two pressing rollers (3) are movably mounted inside the material box (2), characterized in that: A screening mechanism (4) is installed at the rear end of the bottom of the sieve drum (1), and cleaning mechanisms (5) are installed on both sides of the sieve drum (1); The screening mechanism (4) comprises a support frame (6) and two base frames (7), wherein the support frame (6) is mounted at the bottom of the screen drum (1), and the screen drum (1) is located at the top of the support frame (6) and is supported by support rollers and driven to rotate by a motor, and the two base frames (7) are located on both sides of the support frame (6) and are connected by a first hinge shaft (8) at the front end, and an inclined plate (9) is mounted at the bottom of the support frame (6), and a material guide plate (10) is mounted at the rear end of the inclined plate (9), and two hydraulic cylinders (11) are mounted at the rear end of the bottom of the support frame (6), and a second hinge shaft (12) is mounted between the hydraulic cylinder (11), the base frame (7) and the support frame (6).

2. A heavy sand mineral grinding and screening equipment according to claim 1, characterized in that: The two pressing rollers (3) are driven to rotate by a motor, and the support frame (6) is located between the two base frames (7) and is movably rotatable.

3. The heavy sand mineral grinding and screening equipment according to claim 1, characterized in that: The height of the rear end of the inclined plate (9) is lower than that of the front end, and the material guide plate (10) is located at the rear end of the inclined plate (9) and is arranged in an inclined manner.

4. The heavy sand mineral grinding and screening equipment according to claim 1, characterized in that: The hydraulic cylinder (11) is located between the base frame (7) and the support frame (6) and is movably connected via a second hinge shaft (12).

5. The heavy sand mineral grinding and screening equipment according to claim 1, characterized in that: The cleaning mechanism (5) comprises two side plates (13), the two side plates (13) are respectively fixedly mounted on the top of the support frame (6) on both sides, two support rods (14) are fixedly mounted on the outer sides of the two side plates (13), a pressure rod (15) is movably mounted on the outer end of the support rod (14), a roller brush (16) is movably mounted between the two pressure rods (15) on both sides, a third hinge shaft (17) is mounted between the pressure rod (15) and the support rod (14), and a spring (18) is connected and mounted between the middle part of the pressure rod (15) and the support rod (14).

6. The heavy sand mineral grinding and screening equipment according to claim 5, characterized in that: The support rod (14) and the side plate (13) are perpendicular to each other, and the tops of the pressure rod (15) and the support rod (14) are arranged in an inclined manner.

7. The heavy sand mineral grinding and screening equipment according to claim 5, characterized in that: The two ends of the roller brush (16) are movably connected to the two pressure rods (15) via a rotating shaft, and the pressure rod (15) is movably connected to the support rod (14) via a third hinge shaft (17).

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