Anti-blocking spiral chute

Abstract

The utility model discloses an anti-blocking spiral chute, which belongs to the field of mineral processing and comprises a rack, a spiral chute is movably arranged on the rack through an elastic piece, the bottom end of the spiral chute is movably connected with an irregular cam, a feeding stirring box is fixedly arranged on the rack, and a stirring stick is rotatably arranged in the feeding stirring box. The bottom end of the feeding stirring box is provided with a discharging groove, the discharging end of the bottom end of the spiral chute is fixedly provided with three discharging pipes, the three discharging pipes are communicated and connected with three material receiving grooves respectively, and a middling material receiving groove in the three material receiving grooves is communicated and connected with the feeding stirring box through a backflow pipe.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing, specifically to an anti-clogging spiral chute. Background Technology

[0002] In mineral processing, the spiral sluice is an important gravity separation device, mainly used for separating mineral particles based on their density differences. It is widely used in concentrators for the classification and enrichment of fine-grained minerals such as iron ore, tin ore, tungsten ore, and gold ore. During operation, the material slides down the spiral surface under gravity. Due to the special design of the spiral surface, a certain centrifugal force is generated during the descent, creating a uniform flow of material within the sluice. The spiral sluice utilizes the combined effects of gravity, centrifugal force, hydrodynamic force, and friction to separate mineral particles based on differences in density and particle size.

[0003] Its working principle is as follows: the slurry flows downwards along the spiral channel. Due to the inclination and spiral structure of the channel, the slurry is subjected not only to gravity but also to changes in the centrifugal force field. Furthermore, within the spiral channel, particles in the slurry experience different forces due to their varying densities. Denser particles, such as heavy minerals, tend to overcome the flow resistance and move towards the inner side or bottom of the channel under the combined influence of gravity and centrifugal force. Conversely, less dense particles, such as light minerals and clay, are more easily carried away by the water flow and tend to move towards the outer side or upper part of the channel. This differential movement achieves natural stratification according to density.

[0004] However, traditional spiral sluices are fixed and cannot move up and down, which easily leads to the accumulation of mud and slurry in the spiral sluice, affecting the separation efficiency. In addition, the traditional feeding method is to feed minerals and water separately. If they are not mixed evenly, the minerals and water will not have enough contact and cannot form a slurry for stratification. Furthermore, most spiral sluices at present only recover the concentrate separated on the inner side, while the sand and mineral mixture in the middle is discarded along with the mud and sand. This ignores the concentrate in the sand and mineral mixture and causes a waste of resources. Utility Model Content

[0005] To address the problems of traditional fixed spiral chutes that cannot move up and down, leading to the accumulation of mud and slurry and affecting sorting efficiency, and the traditional feeding method of feeding minerals and water separately, which may result in insufficient contact between minerals and water and failure to form a slurry for stratification, this invention provides an anti-clogging spiral chute.

[0006] A clog-resistant spiral chute includes a frame, on which a spiral chute is movably mounted via an elastic element. The bottom end of the spiral chute is movably connected to an irregular cam. A feed mixing box is fixedly mounted on the frame, and a stirring rod is rotatably mounted inside the feed mixing box. A discharge chute is located at the bottom end of the feed mixing box. Three discharge pipes are fixedly mounted at the discharge end of the spiral chute, and the three discharge pipes are respectively connected to three receiving troughs. The middlings receiving trough among the three receiving troughs is connected to the feed mixing box via a return pipe.

[0007] Furthermore, a vertical shaft is fixedly installed at the center of the spiral chute. A limit plate and a sliding groove are fixedly installed at the top and bottom of the vertical shaft, respectively. The bottom wall of the limit plate is fixedly connected to the top of the elastic element, and the bottom of the elastic element is fixedly installed on the top wall of the frame. Through grooves are provided at the top and bottom of the frame, and the top and bottom of the vertical shaft can move up and down in the two through grooves, respectively.

[0008] Furthermore, a receiving groove is fixedly installed at the bottom of the frame. Servo motors are installed on the outer wall of the receiving groove and the top wall of the feeding mixing tank through mounting brackets. Irregular cams and stirring rods are respectively installed on the output end of the servo motors. The irregular cams are slidably connected to the sliding groove at the bottom of the vertical shaft.

[0009] Furthermore, the three discharge pipes, from the inside to the outside of the spiral, are the concentrate discharge pipe, the middlings discharge pipe, and the tailings discharge pipe, respectively. The three receiving troughs are the concentrate receiving trough, the middlings receiving trough, and the tailings receiving trough, respectively, and they correspond one-to-one with the concentrate discharge pipe, the middlings discharge pipe, and the tailings discharge pipe.

[0010] Furthermore, the top wall of the feed mixing tank is equipped with a water inlet and a ore inlet, the discharge port of the discharge chute is located above the spiral chute, the top and bottom ends of the return pipe are respectively connected to the feed mixing tank and the middlings receiving chute, and a pump body is fixedly installed on it.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: the minerals and water are first stirred evenly in the feed mixing tank using stirring rods, so that the slurry is more thoroughly mixed, and then flows into the spiral chute for gravity stratification screening. During this process, the irregular cam rotation drives the vertical shaft to achieve intermittent up and down vibration, which avoids the accumulation and blockage of minerals or mud in the spiral chute, speeds up the screening speed, and the middlings screened out can be returned to the feed mixing tank through the return pipe for further screening, thus avoiding the waste of minerals. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the structure of this utility model;

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

[0014] Figure 3This is a schematic diagram of part B of the structure of this utility model.

[0015] In the diagram: 1. Frame; 2. Elastic component; 3. Spiral chute; 4. Irregular cam; 5. Feed mixing tank; 6. Agitator; 7. Discharge chute; 8. Discharge pipe; 9. Receiving chute; 10. Mid-ore receiving chute; 11. Return pipe; 12. Vertical shaft; 13. Through chute; 14. Limiting plate; 15. Slide chute; 16. Receiving chute; 17. Servo motor; 18. Concentrate discharge pipe; 19. Mid-ore discharge pipe; 20. Tailings discharge pipe; 21. Concentrate receiving chute; 22. Tailings receiving chute; 23. Water inlet; 24. Ore inlet; 25. Pump body. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0018] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0019] Furthermore, some of the aforementioned terms, besides indicating location or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances. Additionally, the term "multiple" should mean two or more.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The following will refer to the accompanying drawings. Figures 1-3 The present invention will be described in detail with reference to the embodiments.

[0021] A clog-resistant spiral chute includes a frame 1, on which a feed mixing tank 5 is fixedly mounted. The top wall of the feed mixing tank 5 is provided with a water inlet 23 and a ore inlet 24. An agitator 6 is rotatably mounted inside the feed mixing tank 5. A servo motor 17 is mounted on the top wall of the feed mixing tank 5 via a mounting bracket. The agitator 6 is mounted on the output end of the servo motor 17. Water and mineral raw materials enter the feed mixing tank 5 from the water inlet 23 and the ore inlet 24, respectively. The servo motor 17 is started, causing it to drive the agitator 6 to rotate, thereby fully mixing the water and mineral raw materials to form a uniform slurry. Since the bottom of the feed mixing tank 5 is provided with a discharge chute 7, and the discharge port of the discharge chute 7 is located above the spiral chute 3, the slurry can fall along the discharge chute 7 into the top feed end of the spiral chute 3 below.

[0022] A spiral chute 3 is movably mounted on the frame 1 via an elastic element 2. The bottom end of the spiral chute 3 is movably connected to an irregular cam 4. Three discharge pipes 8 are fixedly mounted at the discharge end of the bottom of the spiral chute 3. The three discharge pipes 8 are respectively connected to three receiving troughs 9. The slurry flows downward along the spiral direction inside the spiral chute 3 under the action of gravity and centrifugal force. After reaching the three discharge pipes 8, it enters the three receiving troughs 9 along the three discharge pipes 8 respectively.

[0023] A vertical shaft 12 is fixedly installed at the center of the spiral chute 3. A limit plate 14 and a slide 15 are fixedly installed at the top and bottom of the vertical shaft 12, respectively. A receiving groove 16 is fixedly installed at the bottom of the frame 1. A servo motor 17 is installed on the outer wall of the receiving groove 16 through a mounting bracket. An irregular cam 4 is installed on the output end of the servo motor 17. The irregular cam 4 is slidably connected to the slide 15 at the bottom of the vertical shaft 12.

[0024] As the slurry moves downward on the spiral chute 3, the servo motor 17 below is activated, causing the irregular cam 4 to rotate. When the higher protrusion of the irregular cam 4 slides against the chute 15, the vertical shaft 12 moves upward. When the lower part of the irregular cam 4 slides against the chute 15, the vertical shaft 12 moves downward. In other words, the rotation of the irregular cam 4 can drive the vertical shaft 12 to move intermittently upward and downward, so that the spiral chute 3 as a whole vibrates up and down, avoiding the accumulation of slurry and silt inside, preventing blockage inside the spiral chute 3, and affecting the flow rate of the slurry.

[0025] The bottom wall of the limiting plate 14 is fixedly connected to the top of the elastic element 2. The elastic element 2 is sleeved on the top of the vertical shaft 12. The bottom of the elastic element 2 is fixedly set on the top wall of the frame 1. The elastic element 2 is a strong spring. When it is in the normal state, the lower part of the irregular cam 4 can just slide with the slide groove 15. When the higher protrusion of the irregular cam 4 slides with the slide groove 15, the elastic element 2 is in a stretched state. The top and bottom of the frame 1 are respectively provided with through grooves 13. The top and bottom of the vertical shaft 12 can move up and down in the two through grooves 13 respectively. The through grooves 13 can limit the up and down movement of the vertical shaft 12 to a certain extent.

[0026] The three discharge pipes 8, from the inside to the outside of the spiral, are, in order, the concentrate discharge pipe 18, the middlings discharge pipe 19, and the tailings discharge pipe 20. The three receiving troughs 9 are, respectively, the concentrate receiving trough 21, the middlings receiving trough 10, and the tailings receiving trough 22, and they correspond one-to-one with the concentrate discharge pipe 18, the middlings discharge pipe 19, and the tailings discharge pipe 20. The separated concentrate can be transported to the concentrate receiving trough 21 through the concentrate discharge pipe 18, the middlings through the middlings discharge pipe 19 to the middlings receiving trough 10, and the tailings through the tailings discharge pipe 20 to the tailings receiving trough 22. The tailings contain a lot of impurities such as mud and sand and can be discarded directly. However, the middlings still contain some concentrate raw materials, and it would be wasteful to discard them directly. Therefore, they are returned to the feed mixing box 5 through the return pipe 11 for further separation.

[0027] The middlings receiving trough 10 of the three receiving troughs 9 is connected to the feed mixing tank 5 through the return pipe 11. The top and bottom ends of the return pipe 11 are connected to the feed mixing tank 5 and the middlings receiving trough 10, respectively, and a pump body 25 is fixedly installed on it. When the pump body 25 is started, the middlings slurry in the middlings receiving trough 10 can be transported into the feed mixing tank 5 through the return pipe 11 for re-sorting according to the above steps, so as to avoid waste of mineral raw materials.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plug resistant screw conveyor comprising a frame (1), characterized in that: The rack (1) is movably provided with a spiral chute (3) through an elastic member (2), the bottom end of the spiral chute (3) is movably connected with an irregular cam (4), the rack (1) is fixedly provided with a feeding and stirring box (5), the feeding and stirring box (5) is rotatably provided with a stirring rod (6) inside, the bottom end of the feeding and stirring box (5) is provided with a discharge chute (7), the bottom end of the spiral chute (3) is fixedly provided with three discharge pipes (8), the three discharge pipes (8) are respectively connected with three receiving chutes (9), and the middlings receiving chute (10) in the three receiving chutes (9) is connected with the feeding and stirring box (5) through a reflux pipe (11).

2. A non-clogging screw conveyor as claimed in claim 1, wherein: The spiral chute (3) is fixedly provided with a vertical shaft (12) at the center, the top end and the bottom end of the vertical shaft (12) are respectively fixedly provided with a limiting plate (14) and a sliding groove (15), the bottom wall of the limiting plate (14) is fixedly connected with the top end of the elastic member (2), the bottom end of the elastic member (2) is fixedly arranged on the top wall of the rack (1), the top end and the bottom end of the rack (1) are respectively provided with a through groove (13), and the top end and the bottom end of the vertical shaft (12) can move up and down in the two through grooves (13) respectively.

3. A choke free screw trough according to claim 2 wherein: The bottom end of the rack (1) is fixedly provided with a containing groove (16), the outer wall of the containing groove (16) and the top wall of the feeding and stirring box (5) are respectively provided with a servo motor (17) through a mounting frame, the irregular cam (4) and the stirring rod (6) are arranged on the output end of the servo motor (17) respectively, and the irregular cam (4) is slidably connected with the sliding groove (15) at the bottom end of the vertical shaft (12).

4. A choke free screw trough according to claim 3 wherein: The three discharge pipes (8) are sequentially a concentrate discharge pipe (18), a middlings discharge pipe (19) and a tailings discharge pipe (20) from the inside of the spiral to the outside of the spiral, the three receiving chutes (9) are a concentrate receiving chute (21), a middlings receiving chute (10) and a tailings receiving chute (22) respectively, and they correspond to the concentrate discharge pipe (18), the middlings discharge pipe (19) and the tailings discharge pipe (20) respectively.

5. A choke free screw trough according to claim 4 wherein: The top wall of the feeding and stirring box (5) is provided with a water inlet (23) and a ore inlet (24), the discharge end of the discharge chute (7) is arranged above the spiral chute (3), the top end and the bottom end of the reflux pipe (11) are respectively connected with the feeding and stirring box (5) and the middlings receiving chute (10), and a pump body (25) is fixedly arranged on the reflux pipe (11).

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