A mineral powder screening and dust removal equipment

Abstract

This utility model relates to the field of mineral powder screening technology, specifically a mineral powder screening dust removal device, including a circular vibrating screen and a dust removal mechanism mounted on the circular vibrating screen. The circular vibrating screen includes a base, a screen box, and a screen mesh. The dust removal mechanism includes a gantry frame mounted on the base of the circular vibrating screen, a dust collection hood slidably mounted in the middle of the gantry frame, and a driving component mounted on the gantry frame. The dust collection hood is located between the two vertical arms of the gantry frame and slides vertically with the two vertical arms. The driving component is connected to the dust collection hood for driving the dust collection hood to move vertically. This utility model uses a driving component to drive the dust collection hood to slide vertically along the gantry frame. The height of the dust collection hood can be adjusted in real time according to the vibration amplitude of the screen box and the amount of mineral powder fed, ensuring that its bottom edge covers the opening of the screen box and reducing dust diffusion. At the same time, the corrugated pipe at the top of the dust collection hood can freely extend and retract with the movement of the dust collection hood, ensuring the continuous and stable dust removal channel and avoiding pipe damage.

Description

Technical Field

[0001] This utility model relates to the field of mineral powder screening technology, specifically to a mineral powder screening and dust removal device. Background Technology

[0002] In mineral powder screening, the circular vibrating screen is the core equipment for separating mineral powder from impurities. However, existing equipment has many problems in practical applications, affecting screening efficiency and the working environment:

[0003] 1. Poor dust removal effect: The dust removal structure of traditional screening equipment is mostly fixed, and the dust collection position cannot be adjusted according to the vibration state of the screen box or the amount of mineral powder fed. This causes some dust to diffuse from the gap between the dust collection hood and the screen box, resulting in pollution of the working environment.

[0004] 2. Inconvenient disassembly and assembly of screens: Screens are consumable parts and need to be cleaned or replaced regularly. However, the existing connection structure between screens and screen boxes is complicated (such as bolt fixing). Disassembly and assembly require repeated operation with the help of tools, which is time-consuming and labor-intensive and affects the continuous operation efficiency of the equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a mineral powder screening and dust removal device to solve the problems mentioned in the background art, such as poor dust removal effect of existing circular vibrating screens and inconvenient screen disassembly and assembly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mineral powder screening and dust removal device, comprising a circular vibrating screen and a dust removal mechanism disposed on the circular vibrating screen. The circular vibrating screen includes a base, a screen box, and a screen mesh. The dust removal mechanism includes a gantry frame disposed on the base, a dust collection hood slidably disposed in the middle of the gantry frame, and a driving component disposed on the gantry frame. The dust collection hood is located between the two vertical arms of the gantry frame and is vertically slidably engaged with the two vertical arms of the gantry frame. The driving component is drivenly connected to the dust collection hood for driving the dust collection hood to move vertically.

[0007] Furthermore, the inner wall of the screen box is provided with a slot and symmetrically distributed annular sliding grooves. The sliding grooves are located above the slots and communicate with them. The side wall of the screen is provided with symmetrical L-shaped sliding rods. The bottom of the sliding rods is integrally formed with a locking block that matches the slot.

[0008] Furthermore, the circular vibrating screen box is equipped with an auxiliary feeding hopper.

[0009] Furthermore, the bottom of the dust collection hood is symmetrically provided with C-shaped clamping plates that are adapted to the horizontal section of the L-shaped slide bar.

[0010] Furthermore, the driving component is specifically an electric push rod.

[0011] Furthermore, the dust collection hood is equipped with a corrugated pipe.

[0012] This utility model addresses the shortcomings of existing technologies through structural optimization, and has the following beneficial effects:

[0013] 1. Improved dust removal efficiency and flexibility: This utility model uses a driving component to drive the dust collection hood to slide vertically along the gantry frame. The height of the dust collection hood can be adjusted in real time according to the vibration amplitude of the screen box and the amount of mineral powder fed, ensuring that its bottom edge covers the screen box opening and reducing dust diffusion. At the same time, the corrugated pipe at the top of the dust collection hood can freely extend and retract with the movement of the dust collection hood, ensuring the continuous and stable dust removal channel and avoiding pipe damage.

[0014] 2. Simplified screen assembly and maintenance process: The inner wall of the screen box is equipped with an annular sliding groove and a locking groove. The L-shaped sliding rod on the side wall of the screen and the bottom locking block can be quickly locked into the locking groove through sliding and rotating actions to complete the fixation. The screen can be disassembled by reversing the operation without tools. When the screen is jammed due to vibration, the C-shaped locking plate at the bottom of the dust collection hood can cooperate with the L-shaped sliding rod to drive the dust collection hood to move upward through the driving component to assist in the removal, further reducing the difficulty of maintenance.

[0015] 3. Reduce dust splashing during feeding: The funnel-shaped auxiliary feed hopper on the screen box can guide the mineral powder smoothly into the screen box along the hopper wall, reducing dust splashing caused by impact.

[0016] In summary, this utility model achieves integrated and efficient operation of mineral powder screening, impurity separation and dust collection, taking into account screening efficiency, environmental friendliness and convenient equipment maintenance. Attached Figure Description

[0017] Figure 1 This is a horizontally unfolded structural diagram of the present invention;

[0018] Figure 2 This is a rear view of the present invention;

[0019] Figure 3 This is a first internal structure diagram of the present invention;

[0020] Figure 4 This is a second internal structure diagram of the present invention;

[0021] Figure 5 This is a structural diagram of the sieve box of this utility model;

[0022] Figure 6 This is a structural diagram of the screen of this utility model.

[0023] In the picture:

[0024] 1. Circular vibrating screen; 2. Gantry frame; 3. Dust collection hood; 4. Drive unit; 5. Screen box; 6. Auxiliary feed hopper; 7. Slot; 8. Slide chute; 9. Base; 10. Screen mesh; 11. Slide rod; 12. Locking block; 13. Locking plate; 14. Corrugated pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following describes specific embodiments and refers to the appendix. Figure 1-6 The present invention will be further described in detail below.

[0026] The present invention discloses a mineral powder impurity separation and dust removal device, which mainly consists of a circular vibrating screen 1 and a dust removal mechanism, and can realize the functions of impurity separation and dust collection during the mineral powder screening process.

[0027] The circular vibrating screen 1, as the main equipment for mineral powder screening, comprises three core components: a base 9, a screen box 5, and a screen 10 (components unrelated to this improvement are not described in detail). The screen box 5 is elastically mounted above the base 9 via a spring assembly. The springs are evenly distributed in the contact area between the bottom of the screen box 5 and the base 9, ensuring stable vibration of the screen box 5 during operation and achieving separation of mineral powder from impurities. The screen 10 is detachably installed inside the screen box 5 and is used for particle size classification of the mineral powder, separating the qualified mineral powder from large particles of impurities.

[0028] To optimize the feeding process, an auxiliary feed hopper 6 is fixedly installed on the screen box 5 of the circular vibrating screen 1. The auxiliary feed hopper 6 adopts a funnel-shaped structure, and its lower end is connected to the interior of the screen box 5. It can guide the mineral powder to enter the screen box 5 smoothly along the hopper wall, effectively reducing the splashing of mineral powder during feeding and reducing the risk of dust diffusion.

[0029] The inner wall of the screen box 5 is provided with special mounting grooves, including slots 7 and symmetrically distributed annular sliding grooves 8. The sliding grooves 8 are located directly above the slots 7 and are interconnected to form a complete screen installation track. Correspondingly, symmetrical L-shaped sliding rods 11 are welded to the side walls of the screen 10. The bottom of the sliding rods 11 is integrally formed with a locking block 12 that matches the size of the slot 7. During installation, first align the L-shaped sliding rods 11 on both sides of the screen 10 with the annular sliding grooves 8 on the inner wall of the screen box 5, and slowly place the screen 10 into the screen box 5 until the locking block 12 is completely within the range of the sliding groove 8; then rotate the screen 10 clockwise or counterclockwise to make the locking block 12 rotate and lock into the slot 7, completing the initial fixation of the screen 10. If there is a risk of screen loosening during high-frequency vibrating screening, secondary positioning can be performed by bolts passing through the reserved screw holes in the side wall of the screen box 5 and the L-shaped sliding rods 11 to further improve installation stability. When it is necessary to replace the screen 10 or clean impurities, rotate the screen 10 in the opposite direction to make the locking block 12 disengage from the locking groove 7 and return to the sliding groove 8. Then lift the screen 10 upward to remove it. The operation is convenient and efficient.

[0030] The dust collection mechanism is used to solve the dust pollution problem during the screening process. It mainly consists of a gantry frame 2, a dust collection hood 3, and a drive unit 4. The gantry frame 2 is welded from steel and its bottom is fixed to the base 9 of the circular vibrating screen 1 by bolts. The two vertical arms of the gantry frame 2 are located on both sides of the screen box 5, and the crossbeam spans directly above the screen box 5, forming a stable support structure. The dust collection hood 3 adopts an inverted funnel-shaped design. Its two side walls and the inner sides of the two vertical arms of the gantry frame 2 achieve vertical sliding cooperation through a sliding rail slider structure, that is, the dust collection hood 3 can move up and down along the vertical arms of the gantry frame 2. The bottom edge of the dust collection hood 3 corresponds to the top opening of the screen box 5, ensuring that it can cover the opening of the screen box 5 to the maximum extent when descending, thereby improving the dust collection efficiency. The drive unit 4 is specifically an electric push rod with a self-locking function. The fixed end of the electric push rod is installed on the crossbeam of the gantry frame 2 through a flange, and the telescopic end is connected to the horizontal plate at the top of the dust collection hood 3 through a pin. The vertical movement of the dust collection hood 3 can be controlled by the extension and retraction of the electric push rod to meet the position requirements under different working conditions.

[0031] In addition, C-shaped clamping plates 13 are symmetrically welded to the bottom edge of the dust collection hood 3. The opening size of the C-shaped clamping plates 13 is adapted to the diameter of the horizontal section of the L-shaped slide bar 11. When the screen 10 becomes stuck and difficult to remove due to mineral powder blockage or long-term use, the operator can tap it to rotate the horizontal section of the L-shaped slide bar 11 into the C-shaped clamping plate 13. The driving component 4 then moves the dust collection hood 3 upward, simultaneously lifting the screen 10 upward to assist in the screen removal operation.

[0032] A corrugated pipe 14 is also connected to the top of the dust collection hood 3. One end of the corrugated pipe 14 is fixedly connected to the air outlet of the dust collection hood 3 by a clamp, and the other end is connected to the air inlet of an external dust collection device (such as a bag filter or industrial vacuum cleaner). The corrugated pipe 14 has good extensibility and can freely extend and retract with the up and down movement of the dust collection hood 3 to ensure the continuity of the dust collection channel.

[0033] The drive unit 4 is connected to the electrical cabinet and is used to control the start and stop of the drive unit 4. The circular vibrating screen 1, electric push rod, screen 10, bolts, corrugated pipe 14 and other components involved in this device are all commercially available and mature products. The staff can select the specific model and specifications according to the actual screening requirements (such as mineral powder particle size and processing capacity) without needing to understand its internal detailed structure and working principle. They only need to ensure that each component can be assembled and operated normally.

[0034] The mineral powder screening and dust removal equipment of this utility model separates mineral powder from impurities through a circular vibrating screen 1, and collects the dust generated during the screening process simultaneously through an adjustable dust removal mechanism. Its specific working process is as follows:

[0035] 1. Screen Installation and Fixing: The operator aligns the screen 10 with the opening of the screen box 5, ensuring that the L-shaped sliding rod 11 on the side wall of the screen 10 is aligned with the annular sliding groove 8 on the inner wall of the screen box 5. The screen 10 is then slowly placed into the screen box 5. Once the locking block 12 at the bottom of the L-shaped sliding rod 11 is fully inserted into the groove 8, the screen 10 is rotated clockwise or counterclockwise to engage the locking block 12 in the lower locking groove 7, completing the initial fixing of the screen 10. To further enhance stability, a secondary positioning can be achieved by passing bolts through the pre-drilled screw holes in the side wall of the screen box 5 and the L-shaped sliding rod 11.

[0036] II. Dust Collection Mechanism Adjustment: By controlling the extension and retraction of the electric push rod of the drive component 4, the dust collection hood 3 is driven to slide vertically along the vertical arm of the gantry frame 2. Adjust the dust collection hood 3 to a suitable height, usually so that the bottom edge of the dust collection hood 3 covers the top opening of the screen box 5 without affecting the vibration of the screen box 5. At this time, the C-shaped clamping plate 13 at the bottom of the dust collection hood 3 and the horizontal section of the L-shaped sliding rod 11 are in a non-contact state. At the same time, connect the other end of the corrugated pipe 14 at the top of the dust collection hood 3 to the air inlet of external dust collection equipment such as a bag filter or industrial vacuum cleaner to ensure that the dust collection channel is unobstructed.

[0037] III. Mineral Powder Screening: Check that the auxiliary feed hopper 6 is securely installed, ensuring its lower end is connected to the inside of the screen box 5 without any blockage or leakage. The operator adds the mineral powder to be screened through the auxiliary feed hopper 6, minimizing splashing caused by direct dumping. Start the circular vibrating screen 1; the screen box 5 begins high-frequency vibration supported by the spring assembly. The mineral powder moves continuously within the screen box 5 with the vibration. Powder meeting the particle size requirements falls through the screen mesh 10 to the bottom of the screen box 5, while large impurities are trapped and remain on the surface of the screen mesh 10, achieving separation of mineral powder and impurities.

[0038] IV. Dust Collection and Treatment: During the screening process, the dust generated by vibration diffuses within the screen box 5. Because the dust collection hood 3 covers the opening of the screen box 5, the dust is confined within the relatively enclosed space formed by the dust collection hood 3 and the screen box 5. After the external dust collection equipment is started, a negative pressure is formed through the corrugated pipe 14, and the dust in the dust collection hood 3 is continuously drawn into the corrugated pipe 14 and filtered and purified by the external dust collection equipment, effectively preventing dust leakage and environmental pollution.

[0039] 5. After the mineral powder screening is completed, first turn off the circular vibrating screen 1. After the screen box 5 stops vibrating, turn off the external dust collection equipment to stop dust collection. By controlling the extension of the electric push rod, the dust collection hood 3 is moved upward along the vertical arm of the gantry frame 2, away from the opening of the screen box 5, leaving operating space for the disassembly and cleaning of the screen 10. If there are residual impurities on the surface of the screen 10 that need to be cleaned, or if a screen 10 with a different mesh size needs to be replaced, the operator can directly rotate the screen 10 to make the locking block 12 disengage from the locking groove 7 and return to the annular slide 8. Then, the screen 10 can be lifted upward to remove it. If the screen 10 becomes stuck due to long-term vibration, the dust collection hood 3 can be lowered, and then the screen 10 can be rotated so that the C-shaped locking plate 13 at the bottom of the dust collection hood 3 is aligned with the horizontal section of the L-shaped slide rod 11. The dust collection hood 3 is then raised by the electric push rod, and the C-shaped locking plate 13 pulls the L-shaped slide rod 11 and simultaneously moves the screen 10 upward, assisting in the disassembly of the screen 10.

[0040] 6. After cleaning or replacing screen 10, reinstall screen 10 according to the screen installation and fixing steps, and adjust dust collection hood 3 to the working position through drive component 4 to complete equipment reset and wait for the next screening operation.

[0041] Through the above process, this equipment realizes the integrated operation of mineral powder screening, impurity separation and dust collection, which not only ensures screening efficiency, but also effectively controls dust pollution. At the same time, the modular design simplifies the disassembly and maintenance process of the screen 10.

Claims

1. A mineral powder screening and dust removal device, comprising a circular vibrating screen (1) and a dust removal mechanism disposed on the circular vibrating screen (1), wherein the circular vibrating screen (1) includes a base (9), a screen box (5), and a screen mesh (10), characterized in that, The dust removal mechanism includes a gantry frame (2) mounted on a base (9), a dust collection hood (3) slidably mounted in the middle of the gantry frame (2), and a drive unit (4) mounted on the gantry frame (2). The dust collection hood (3) is located between the two vertical arms of the gantry frame (2) and is vertically slidably engaged with the two vertical arms of the gantry frame (2). The drive unit (4) is connected to the dust collection hood (3) for driving the dust collection hood (3) to move vertically.

2. The dust removal equipment as described in claim 1, characterized in that, The inner wall of the sieve box (5) is provided with a slot (7) and symmetrically distributed annular sliding grooves (8). The sliding grooves (8) are located above the slots (7) and are connected to the slots (7). The side wall of the sieve (10) is provided with symmetrical L-shaped sliding rods (11). The bottom of the sliding rods (11) is integrally formed with a locking block (12) that is adapted to the slots (7).

3. The dust removal equipment as described in claim 1, characterized in that, The circular vibrating screen (1) is equipped with an auxiliary feeding hopper (6) on the screen box (5).

4. The dust removal equipment as described in claim 2, characterized in that, The bottom of the dust collection hood (3) is symmetrically provided with C-shaped clamps (13) that are adapted to the horizontal section of the L-shaped slide bar (11).

5. The dust removal equipment as described in claim 1, characterized in that, The driving component (4) is specifically an electric push rod.

6. The dust removal equipment as described in claim 1, characterized in that, The dust collection hood (3) is equipped with a corrugated pipe (14).

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