Anti-blocking device for a belt magnetic separation plant

Abstract

The utility model discloses a kind of anti-blocking device of belt magnetic separation equipment, it is related to titanium dioxide production waste residue resource utilization technical field, including feeding device, the side fixedly connected with discharge port of feeding device, the inside center of feeding device is provided with connecting rod, the outer surface of connecting rod is fixedly connected with several stirring vanes, the stirring vane is used to prevent mud residue to accumulate in the inside of feeding device.The utility model passes through the rotation of stirring vane and generates sustained shear force and flow field, so that mud residue keeps fluidization in feeding device, avoid partial accumulation caused by gravity settlement or viscous agglomeration.And stirring makes magnetic particle and non-magnetic particle in mud residue fully separate, reduce the loss of magnetic substance in tailings.

Description

Technical Field

[0001] This utility model relates to the field of resource utilization technology of waste residue from titanium dioxide production, and in particular to an anti-clogging device for belt magnetic separators. Background Technology

[0002] Belt magnetic separators are specialized devices that use magnetic fields to separate magnetic and non-magnetic materials. They achieve separation based on the magnetic differences in minerals or materials through the attraction of the magnetic field generated by the magnetic system. In titanium dioxide production, belt magnetic separators are primarily used to remove magnetic impurities from raw materials, improving the purity and whiteness of the titanium dioxide. Especially in the sulfuric acid process, magnetic separation is a crucial pretreatment step, reducing the content of metallic impurities such as iron and titanium in the molten titanium after acid hydrolysis, ensuring that the final product meets standards for bleaching power, dispersibility, and whiteness.

[0003] In existing belt magnetic separators, when sludge is directly fed into the feed device, the increased feed rate leads to sludge accumulation, affecting magnetic separation efficiency. Accumulation prevents uniform material distribution, resulting in insufficient mixing of magnetic and non-magnetic particles. This makes it difficult for the separator to accurately capture weakly magnetic impurities, leading to a decrease in concentrate grade and an increase in impurity residue. Furthermore, frequent shutdowns for cleaning are necessary, increasing labor, spare parts, and downtime costs. Accumulation can also cause mechanical failures such as equipment jamming and belt breakage, resulting in operator injuries. In wet magnetic separation, accumulation can cause slurry overflow, leading to slips, electrical short circuits, and other accidents.

[0004] To address the issue of sludge accumulation within the feeding device, a stirring mechanism is installed inside the device to continuously agitate and disperse the sludge during magnetic separation. This agitation keeps the sludge loose and evenly distributed during feeding, preventing "magnetic short circuits" or "separation blind spots" caused by localized accumulation. Furthermore, with magnetic and non-magnetic particles fully exposed to the magnetic field, the magnetic separator can accurately capture weakly magnetic impurities. Agitating and dispersing the sludge also reduces localized pressure on the belt, rollers, and bearings, decreasing the probability of belt slippage, misalignment, and breakage, and mitigating bearing overheating and magnetic leakage issues.

[0005] However, in existing magnetic separation feeding devices, because the sludge enters the device vertically, the sludge experiences rapid gravitational acceleration. This impact can cause the agitator blades to break. Once the blades break, the agitation function is completely lost, and the sludge will fall back into a vicious cycle of vertical impact and accumulation, leading to renewed localized buildup in the feeding device and a sharp drop in magnetic separation efficiency. Furthermore, broken blade fragments may become lodged in the belt, drum, or bearing gaps, causing secondary damage such as belt tearing, drum wear, and bearing seizure. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-clogging device for belt magnetic separators, which solves the problem of sludge accumulating in the feeding device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An anti-clogging device for a belt magnetic separator includes a feeding device with a discharge port fixedly connected to one side. A connecting rod is located at the center of the feeding device, and several stirring blades are fixedly connected to the outer surface of the connecting rod. The stirring blades are used to prevent sludge from accumulating inside the feeding device. The rotation of the stirring blades generates continuous shear force and flow field, keeping the sludge fluidized within the feeding device and preventing localized accumulation due to gravity settling or viscous agglomeration.

[0009] As a further improvement of this utility model, a base plate is fixedly connected to the bottom end of the feeding device, and a protective frame is fixedly connected to the bottom end of the base plate. A rotary motor is installed inside the bottom end of the protective frame. The rotary motor drives the entire stirring mechanism.

[0010] As a further improvement of this utility model, the connecting rod is fixedly connected to the output end of the rotary motor, and an anti-collision slider is fixedly connected to the top end of the connecting rod. The anti-collision slider provides secondary buffering when the sludge falls into the feeding device.

[0011] As a further improvement of this utility model, a connecting wire is provided at the bottom of the rotary motor. The connecting wire is fixedly connected inside the protective frame. The rotary motor and the connecting wire are connected by a signal. The end of the connecting wire away from the rotary motor is connected by a signal to a start switch. The start switch is located on the outer surface of the protective frame.

[0012] As a further improvement of this utility model, a funnel inlet is fixedly connected to the top of the anti-collision slider, and a millimeter-level through-hole is provided through the top of the funnel inlet. Through the funnel inlet and the millimeter-level through-hole, the sludge undergoes initial screening and dispersion buffering when it enters the feeding device.

[0013] As a further improvement of this utility model, both the upper and lower ends of the stirring blade are triangular, and the millimeter-level through-hole is square in shape. The millimeter-level through-hole is used to prevent sludge from entering the feeding device too quickly. The triangular cone design at both ends of the blade forms a high-shearing cutting edge, which performs a "cutting-crushing" action on agglomerates and hard particles in the sludge.

[0014] As a further improvement of this utility model, the anti-collision slider is in the shape of a conical trapezoid, and the connecting angles of the upper and lower faces of the conical trapezoid are all rounded arcs. The conical design of the anti-collision slider transforms the vertically falling mud into a sliding trajectory along an inclined plane, and combined with the arc treatment of the upper and lower corners, it forms a gradient dissipation path of "impact-dispersion-buffering".

[0015] Compared with the prior art, the advantages of this utility model are as follows:

[0016] 1. The continuous shear force and flow field generated by the rotation of the agitator blades keep the sludge fluidized within the feeding device, preventing localized accumulation caused by gravity settling or viscous agglomeration. Furthermore, the agitation effectively separates magnetic and non-magnetic particles in the sludge, reducing the loss of magnetic materials from the tailings.

[0017] 2. Through millimeter-level through-holes and anti-collision sliders, a secondary impact reduction process is performed, forming a gradient digestion path of "impact-dispersion-buffering". The buffered sludge contacts the mixing blades at a more uniform flow rate and distribution, avoiding "magnetic short circuits" or sorting blind zones caused by local accumulation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the feeding device and the anti-collision slider in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the funnel inlet and the millimeter-level through-hole in this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the protective frame, stirring blades, and anti-collision slider in this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the rotary motor, connecting wires, and starter switch in this utility model.

[0023] In the diagram: 101, hopper inlet; 102, millimeter-level through-hole; 201, feeding device; 202, discharge port; 203, bottom plate; 204, protective frame; 205, rotary motor; 206, connecting rod; 207, stirring blade; 208, anti-collision slider; 209, connecting wire; 210, start switch. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] See attached document Figure 1 -Appendix Figure 5 An anti-clogging device for a belt magnetic separator includes a funnel inlet 101, a millimeter-level through-hole 102, a feeding device 201, a rotary motor 205, a connecting rod 206, a stirring blade 207, an anti-collision slider 208, a connecting line 209, and a start switch 210.

[0027] In this embodiment, slurry is injected into the top of the millimeter-level through-hole feed device 201. When using this invention, the start switch 210 is first turned on, which transmits a start signal to the rotary motor 205 via the connecting line 209, thereby starting the rotary motor 205. The start switch 210's operation via the connecting line 209 is common knowledge in the prior art and will not be elaborated upon further in this invention.

[0028] When the rotary motor 205 is started, the connecting rod 206 will rotate, and the anti-collision slider 208, which is fixedly connected to the top of the connecting rod 206, will also rotate. Since the funnel inlet 101 is fixedly connected to the top of the anti-collision slider 208, the funnel inlet 101 will rotate under the rotation of the anti-collision slider 208. At this time, the sludge is controlled to be poured in from the top of the funnel inlet 101. The millimeter-sized through-hole 102 opened through the top of the funnel inlet 101 will intercept excessively large sludge particles and ensure that the rate at which the sludge enters the millimeter-sized through-hole feeding device 201 is slowed down. The through-hole size is strictly limited to the millimeter level to directly intercept sludge particles that exceed the particle size limit and prevent them from impacting the mixing blades 207 at high speed. Moreover, the funnel inlet 101 rotates under the drive of the anti-collision slider 208, causing the sludge to enter in a spiral trajectory, converting the vertical gravitational acceleration impact into a horizontal dispersion force. This design reduces the impact speed of the sludge and reduces the instantaneous impact load on the mixing blades 207. The rotating funnel inlet 101, combined with the millimeter-level through-hole 102, forces the sludge into the magnetic separation zone in a uniform and continuous flow, avoiding "magnetic short circuits" or "separation blind zones" caused by local accumulation. This ensures that magnetic and non-magnetic particles are fully exposed to the magnetic field, thereby improving the concentrate grade.

[0029] After the sludge passes through the millimeter-level through-hole 102, it will first come into contact with the anti-collision slider 208. Because the anti-collision slider 208 has a conical design with rounded corners, it provides secondary processing of the falling sludge, minimizing the impact force when it hits the surface of the agitator blades 207. The conical design of the anti-collision slider 208 transforms the vertically falling sludge into a sliding trajectory along an inclined plane. Combined with the rounded corners, this forms a gradient dissolution path of "impact-dispersion-buffering." The buffered sludge then contacts the agitator blades 207 with a more uniform flow rate and distribution, avoiding "magnetic short circuits" or blind spots in sorting caused by localized accumulation. In titanium dioxide production, this uniform flow can increase the grade of magnetic concentrate by 8%-15% and reduce the loss rate of magnetic materials in tailings by 5%-10%, directly improving resource recovery. Moreover, with the impact force minimized, the agitator blades 207 can more stably perform the dispersing function, ensuring sufficient separation of magnetic and non-magnetic particles.

[0030] Once the sludge has completely entered the millimeter-level through-hole feed device 201, the rotation of the connecting rod 206 will cause several agitator blades 207 fixedly connected to its side to rotate, ensuring that the sludge remains loose inside the millimeter-level through-hole feed device 201 and preventing its accumulation. The rotation of the agitator blades 207 generates continuous shear force and flow field, keeping the sludge fluidized within the feed device 201 and preventing localized accumulation caused by gravity settling or viscous agglomeration. Furthermore, the agitation effectively separates magnetic and non-magnetic particles in the sludge, reducing the loss of magnetic materials from the tailings. Continuous agitation also reduces localized impact and wear on the inner wall of the feed device 201 and the agitator blades 207 caused by the sludge.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An anti-clogging device for a belt magnetic separator, comprising a feeding device (201), characterized in that, A discharge port (202) is fixedly connected to one side of the feeding device (201). A connecting rod (206) is provided at the center of the inside of the feeding device (201). Several stirring blades (207) are fixedly connected to the outer surface of the connecting rod (206). The stirring blades (207) are used to prevent mud from accumulating inside the feeding device (201). A base plate (203) is fixedly connected to the bottom end of the feeding device (201). A protective frame (204) is fixedly connected to the bottom end of the base plate (203). A rotary motor (205) is provided at the bottom end of the protective frame (204). The connecting rod (206) is fixedly connected to the output end of the rotary motor (205). An anti-collision slider (208) is fixedly connected to the top end of the connecting rod (206).

2. The anti-clogging device for a belt magnetic separator according to claim 1, characterized in that, The bottom end of the rotary motor (205) is provided with a connecting line (209), which is fixedly connected to the inside of the protective frame (204). The rotary motor (205) and the connecting line (209) are connected by a signal. The end of the connecting line (209) away from the rotary motor (205) is connected to the start switch (210), which is located on the outer surface of the protective frame (204).

3. The anti-clogging device for a belt magnetic separator according to claim 1, characterized in that, The top of the anti-collision slider (208) is fixedly connected to a funnel inlet (101), and a millimeter-level through-hole (102) is opened through the top of the funnel inlet (101).

4. The anti-clogging device for a belt magnetic separator according to claim 3, characterized in that, The upper and lower ends of the stirring fan blade (207) are triangular, and the millimeter-level through-hole (102) is square in shape. The millimeter-level through-hole (102) is used to prevent mud from entering the feeding device (201) too quickly.

5. The anti-clogging device for a belt magnetic separator according to claim 2, characterized in that, The anti-collision slider (208) is in the shape of a conical trapezoid, and the connecting angles of the upper and lower faces of the conical trapezoid are both rounded arcs.

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