CN-117258414-B - Filter and sorting device for supergravity sorting

CN117258414BCN 117258414 BCN117258414 BCN 117258414BCN-117258414-B

Abstract

The invention discloses a filter and a sorting device for supergravity separation, relates to the technical field of gravity separation of fine-grained minerals, and aims to solve the problems that in the prior art, the filtering effect on overflow products is poor, the separation efficiency is low and filtrate cannot be reused due to more minerals in filtrate. The filter comprises a propeller blade, an outer cylinder and an inner cylinder, wherein the propeller blade is arranged in the inner cylinder, the inner cylinder is arranged in the outer cylinder, a space between the inner cylinder and the outer cylinder is used as a filtrate space, a spiral gap extending along the axial direction of the inner cylinder is formed in the side wall of the inner cylinder, the spiral gap and the inner cylinder are coaxially arranged, a spiral screen covers the spiral gap, the inner cylinder is communicated with the filtrate space through the spiral screen, a discharge port is formed in the bottom end of the inner cylinder, and a liquid discharge port is formed in the bottom end of the filtrate space. The invention can be used for mineral separation.

Inventors

HE JINGFENG
ZHU LINGTAO
YANG BIN

Assignees

中国矿业大学

Dates

Publication Date: 20260508
Application Date: 20231027

Claims (9)

1. The sorting device is characterized by comprising a filter and a supergravity sorting unit, wherein the supergravity sorting unit comprises an inner sleeve and a rotary drum, the filter comprises a propeller blade, an outer cylinder and an inner cylinder, the propeller blade is arranged in the inner cylinder, the inner cylinder is arranged in the outer cylinder, and a space between the inner cylinder and the outer cylinder is used as a filtrate space; The inner wall of the material collecting tank comprises an upper inclined wall, a vertical wall and a lower inclined wall, the upper inclined wall, the vertical wall and the lower inclined wall are sequentially connected from top to bottom so that the inner wall of the material collecting tank forms a trapezoid structure, and a plurality of fluidization water holes are formed in the vertical wall and the lower inclined wall along the circumferential direction; The upper inclined wall and the vertical wall and the lower inclined wall are both in rotary connection, the supergravity separation unit also comprises a capacity adjusting component, the capacity adjusting component comprises a tension spring, an upper mounting bulge, a lower mounting bulge and an adjusting rod, one end of the tension spring is fixedly connected with the upper inclined wall, the other end of the tension spring is fixedly connected with the lower inclined wall, the upper mounting bulge is arranged on the upper inclined wall, the lower mounting bulge is arranged on the lower inclined wall, one end of the adjusting rod is rotatably connected with the lower inclined wall, and the other end of the adjusting rod extends out of the rotary drum from the top end of the rotary drum after penetrating through the upper inclined wall.
2. The apparatus of claim 1, further comprising a spiral brush disposed in the filtrate space, the spiral brush having a spiral shape corresponding to a position of the spiral screen.
3. The sorting apparatus of claim 1, further comprising a double-layer solenoid valve; The outer layer of the double-layer electromagnetic valve is connected with the filtrate space and is used for controlling the discharge of the filtrate; The inner layer of the double-layer electromagnetic valve is connected with the inner cylinder and used for controlling the discharge of filter residues.
4. A sorting apparatus according to claim 3, wherein the inner layer of the double-layer solenoid valve is a screen having the same pore size as that of the spiral screen.
5. The sorting device of claim 1, wherein the propeller blades are spaced from the helical screen by 0.2-0.5 mm.
6. The sorting device of claim 1, wherein the aperture ratio of the spiral screen is 15% -20%, and the aperture of the spiral screen is smaller than the minimum particle size of the fed minerals.
7. The separator of any one of claims 1 to 6, further comprising a flow guide assembly, wherein the flow guide assembly comprises a flow guide substrate, a flow guide feed inlet, a first discharge port and a second discharge port are formed in the flow guide substrate, the flow guide feed inlet is connected with the discharge port of the inner cylinder and the liquid outlet of the filtrate space, the first discharge port is connected with the conveyor belt, and the second discharge port is connected with the water storage tank.
8. The sorting apparatus of claim 7, wherein the flow directing assembly further comprises a flow directing flow meter disposed on the second outlet.
9. The sorting apparatus of claim 8, wherein the deflector assembly further comprises a pivoting baffle pivotally connected to the deflector base having a first shielding mode and a second shielding mode; In the filtering process, the pivoting baffle is in a first shielding mode and covers the first discharge port, and the liquid outlet of the filtrate space is connected with the water storage tank through the second discharge port; After the filtration is finished, the pivoting baffle is in a second shielding mode and covers the second discharge port, and the discharge port of the inner cylinder is connected with the conveying belt through the first discharge port.

Description

Filter and sorting device for supergravity sorting Technical Field The invention relates to the technical field of gravity separation of fine-grained minerals, in particular to a filter and a separation device for super-gravity separation. Background Minerals are one of the important substances on which human civilization is dependent as an important raw material for the development of today's society. As the degree of mechanization of mining increases, the content of fine particulate material in raw ore increases gradually, and supergravity separation is one of the techniques that can effectively separate fine particulate minerals. However, the problems of high water consumption, incapability of timely dehydrating and filtering overflow products and the like exist in the supergravity separation process, and high-efficiency dehydrating equipment matched with the development and design is required, so that the filtering and dehydrating efficiency of the overflow products is improved, the recycling of filtrate is ensured, and the water resource is saved. Disclosure of Invention In view of the above analysis, the present invention aims to provide a filter and a sorting device for supergravity sorting, which are used for solving the problems of poor filtering effect on overflow products, low sorting efficiency caused by more minerals in filtrate and incapability of recycling filtrate in the prior art. The aim of the invention is mainly realized by the following technical scheme: the invention provides a filter for supergravity separation, which comprises a propeller blade, an outer cylinder and an inner cylinder, wherein the propeller blade is arranged in the inner cylinder, the inner cylinder is arranged in the outer cylinder, a space between the inner cylinder and the outer cylinder is used as a filtrate space, a spiral gap extending along the axial direction of the inner cylinder is formed in the side wall of the inner cylinder, the spiral gap is coaxially arranged with the inner cylinder, a spiral screen covers the spiral gap, the inner cylinder is communicated with the filtrate space through the spiral screen, a discharge port is formed in the bottom end of the inner cylinder, and a liquid discharge port is formed in the bottom end of the filtrate space. Further, the filter screen filter device also comprises a spiral brush which is arranged in the filtrate space, the shape of the spiral brush is spiral and corresponds to the position of the spiral screen. The filter is characterized by further comprising a double-layer electromagnetic valve, wherein the outer layer of the double-layer electromagnetic valve is connected with the filtrate space and used for controlling the discharge of filtrate, and the inner layer of the double-layer electromagnetic valve is connected with the inner cylinder and used for controlling the discharge of filter residues. Further, the inner layer of the double-layer electromagnetic valve is a filter screen with the aperture identical to that of the spiral screen. Further, the distance between the propeller blade and the spiral screen is 0.2-0.5 mm. Further, the aperture ratio of the spiral screen is 15% -20%, and the aperture of the spiral screen is smaller than the minimum granularity value of the mineral to be fed. Further, still include the water conservancy diversion subassembly, the water conservancy diversion subassembly includes the water conservancy diversion base member, sets up water conservancy diversion feed inlet, first discharge gate and second discharge gate on the water conservancy diversion base member, and the water conservancy diversion feed inlet is connected with the discharge gate in inner tube and the liquid outlet in filtrate space, and first discharge gate is connected with the conveyer belt, and the second discharge gate is connected with the water storage tank. Further, the flow guiding component further comprises a flow guiding flowmeter, and the flow guiding flowmeter is arranged on the second discharging port. Further, the flow guiding assembly further comprises a pivoting baffle plate, wherein the pivoting baffle plate is pivotally connected with the flow guiding base body and is provided with a first shielding mode and a second shielding mode; in the filtering process, the pivoting baffle is in a first shielding mode, covers the first discharge hole, the liquid outlet of the filtrate space is connected with the water storage tank through the second discharge hole, and after the filtering is finished, the pivoting baffle is in a second shielding mode, covers the second discharge hole, and the discharge hole of the inner cylinder is connected with the conveying belt through the first discharge hole. The invention also provides a sorting device which comprises the filter. Compared with the prior art, the invention has at least the following beneficial effects: The filter for supergravity separation provided by the invention is of a double-layer struc