Spiral drum waste rock discharging machine
By designing a spiral drum discharger in coal preparation equipment, using spiral grooves to make the material spiral flip, forming a variety of layers, solving the problems of small particle size range and large water consumption in the prior art, achieving more efficient sorting and lower water consumption.
Patent Information
- Application Number
- CN202421843708.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing coal preparation equipment has a small particle size range and a large amount of water consumption, resulting in a large scale of the sewage discharge system.
A spiral drum discharger is designed to spiral flip through the spiral grooves in the inner wall of the mixing chamber to make the sorted materials spiral flip, forming multiple layers, using the buoyancy effect of different densities for sorting to reduce the water consumption.
The particle size range of sorted materials has been expanded, the water consumption is reduced, the scale of sewage discharge is reduced, the cleaning rate and quality control are improved, and the equipment is simple and the productivity is high.
Smart Images
Figure CN222998930U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ore dressing equipment, in particular to a spiral drum gangue discharger. Background Art
[0002] Coal washing is an indispensable process in coal deep processing. The coal directly mined from the mine is called raw coal. A lot of impurities are mixed in the raw coal during the mining process, and the quality of the coal is also different. The coal with low inherent ash and the coal with high inherent ash are mixed together; coal washing is an industrial process of removing impurities from raw coal or classifying high-quality coal and low-quality coal.
[0003] Existing coal separation equipment mostly uses traditional separation methods, with only water flow and additives as separation media. Therefore, the particle size range of the separated materials is small; at the same time, the amount of water required for the traditional separation method needs to ensure the suspension of the separated materials, so the amount of water required is large, resulting in a large-scale sewage disposal system.
[0004] Therefore, in view of the above problems, the utility model urgently provides a spiral drum gangue discharger. Content of the Utility Model
[0005] The purpose of the utility model is to provide a spiral drum gangue discharger, and through the design of spiral grooves on the inner wall of the mixing chamber, the problems of small particle size range of separated materials and large water consumption in the prior art are solved.
[0006] A spiral drum gangue discharger includes a bottom plate and a movable plate located above the bottom plate. One end of the movable plate is hinged to one end of the bottom plate through a hinge, and the other end of the movable plate is rotatably connected to the bottom plate through an angle adjustment mechanism; a rotating cylinder is arranged in parallel above the movable plate, and the rotating cylinder is installed on the movable plate through a rotating mechanism. A mixing chamber is arranged inside the rotating cylinder. Discharge ports and feed ports communicated with the mixing chamber are respectively arranged on two opposite sides of the rotating cylinder. Spiral grooves are arranged on the inner wall of the mixing chamber. Among them, the diameter of the discharge port is smaller than the diameter of the mixing chamber.
[0007] It also includes a feed trough installed at one end of the movable plate. One end of the feed trough extends from the feed port into the mixing chamber, and a jet water pipe is also arranged in parallel above the feed trough.
[0008] A gangue discharge trough is also installed below the feed port, and the gangue discharge trough is installed on the movable plate.
[0009] Further, one end of the feed trough outside the rotating cylinder is fixedly connected to one end of the movable plate through a bracket.
[0010] Further, the angle adjustment mechanism includes a threaded hole penetrating through the movable plate, and a support rod is screwed in the threaded hole; the other end of the support rod is lapped on the upper surface of the bottom plate and is movably connected to the bottom plate.
[0011] Furthermore, the support rod is a lead screw or a jack, and the angle adjustment range of the angle between the movable plate and the bottom plate is 0°-30°.
[0012] Furthermore, the rotating mechanism includes two pairs of roller mounts arranged at intervals and rollers mounted on each roller mount. The rotating cylinder is placed above the rollers and is frictionally connected to the rollers;
[0013] It also includes a double-shaft drive motor. Each roller is respectively connected to the two output shafts of the double-shaft drive motor, and each roller mount and the double-shaft drive motor are both mounted on the movable plate.
[0014] Furthermore, the diameter of the discharge port of the rotating cylinder is 400mm-1200mm, the diameter of the feed port is 1000mm-3000mm, and the central axes of the discharge port and the feed port coincide.
[0015] Furthermore, the hinge connecting the movable plate and the bottom plate is a hinge.
[0016] Furthermore, the length of the mixing chamber is 6000mm-11000mm.
[0017] Furthermore, the ratio of the length that the feeding trough extends into the mixing chamber to the length of the mixing chamber is 2:3.
[0018] Furthermore, the jet water pipe includes a pipe body communicating with the movable plate, and also includes a plurality of spray holes arranged at intervals along the side wall of the pipe body in the length direction of the pipe body.
[0019] Compared with the prior art, the spiral drum gangue discharger provided by the present utility model has the following improvements:
[0020] The spiral drum gangue discharger provided by the present utility model is applicable to the separation of a gas-solid two-phase mixed medium composed of self-generated medium (i.e., fine particles contained in the selected raw materials) and air; by rotating the rotating cylinder, the separated materials make a spiral flipping motion, forming multiple layers, and using the buoyancy effect generated by different density layers for separation, so that the high-quality coal with a lighter material is discharged from the discharge port to obtain high-quality coal; under the action of the spiral groove in the mixing chamber, the gangue and other impurities in the separated materials enter the gangue discharge trough through the feed port; the separated material particle size range of the present utility model is wide, and the internal thread design is adopted to make the materials do a circulating spiral motion, so that the separated materials are sorted multiple times, and multiple products with different ash contents from low to high can be selected, and the washing rate and fine product control are much better than those of traditional washing machines; at the same time, the present utility model uses less water, has a simple process, fewer equipment, high productivity, and the lowest processing cost per ton of raw materials among all beneficiation methods, so that the labor productivity can be greatly improved. Description of the Drawings
[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0022] Figure 1 It is a schematic structural diagram (cross-sectional view) of the spiral drum gangue discharger described in the present invention;
[0023] Figure 2 It is a schematic structural diagram (top view) of the spiral drum gangue discharger described in the present invention when the included angle between the movable plate and the bottom plate is 0°.
[0024] Explanation of reference numerals:
[0025] 1. Bottom plate; 2. Movable plate; 4. Roller mounting seat; 5. Roller; 6. Mixing chamber; 7. Double-shaft drive motor; 8. Rotating cylinder; 9. Jet water pipe; 10. Feed chute; 11. Gangue discharge chute; 12. Discharge port; 13. Feed port; 14. Support rod; 15. Bracket. Specific embodiments
[0026] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0029] As Figure 1 , Figure 2 shown, the present utility model provides a spiral drum gangue discharger, which includes a bottom plate 1 and a movable plate 2 installed above the bottom plate 1. One end of the movable plate 2 is hinged to one end of the bottom plate 1 through a hinge, and the other end of the movable plate 2 is connected to the bottom plate 1 through an angle adjusting mechanism, so that the movable plate 2 and the bottom plate 1 can be rotatably connected around the hinge; above the movable plate 2, there is a rotating cylinder 6 arranged in parallel. The rotating cylinder 6 is installed on the movable plate 2 through a rotating mechanism. Inside the rotating cylinder 8, there is a mixing chamber 6. On both opposite sides of the rotating cylinder 6, there are a discharge port 12 and a feed port 13 respectively communicated with the mixing chamber 6. The inner wall of the mixing chamber 6 is provided with spiral grooves; among them, the diameter of the discharge port 12 is smaller than the diameter of the mixing chamber 6;
[0030] It further includes a feed chute 10 installed at one end of the movable plate 2. One end of the feed chute 10 extends from the feed port 13 into the mixing chamber 6, and above the feed chute 10, there is also a water jet pipe 9 arranged in parallel;
[0031] Below the feed port 13, there is also a gangue discharge chute 11 installed, and the gangue discharge chute 11 is installed on the movable plate 2.
[0032] The spiral drum gangue discharger provided by the present utility model is suitable for the separation of a gas-solid two-phase mixed medium composed of self-generated medium (i.e., fine particles contained in the selected raw materials) and air; by rotating the rotating cylinder, the separated materials make a spiral turning motion, forming multiple layers, and using the buoyancy effect generated by different density layers for separation, so that the high-quality coal with lighter material is discharged from the discharge port to obtain high-quality coal; under the action of the spiral grooves in the mixing chamber, impurities such as gangue in the separated materials enter the gangue discharge chute through the feed port; the separated material particle size range of the present utility model is wide, and the internal thread design is adopted to make the materials do a circulating spiral motion, so that the separated materials are separated multiple times, and multiple products with different ash contents from low to high can be selected, and the washing rate and fine product control are much better than those of traditional washing machines; at the same time, the present utility model uses less water, has a simple process, fewer equipment, high productivity, and the lowest processing cost per ton of raw materials among all beneficiation methods, which can greatly improve the labor productivity.
[0033] The present utility model uses a gas-solid two-phase mixed medium composed of fine particles contained in the selected raw materials and air for separation, rather than using only water flow and additives as the separation medium. Therefore, the separated material particle size range is wide, up to 0.001 - 50 mm. Compared with traditional separation that can only separate narrow particle size materials, the present utility model has stronger practicability; and the water consumption of the present utility model is only used to loosen the bed layer and form a mixed medium with fine-grained light materials, without suspending the materials. The required water volume is only 1 / 3 of that of traditional separation. Therefore, the sewage discharge scale is also greatly reduced, the use cost is greatly reduced, and there is no pollution to the environment.
[0034] During the working process of the utility model, the selected materials are sent to the feed trough 10 by the feeder, enter the mixing chamber 6 through the feed port 13, and form a mineral layer of a certain thickness in the mixing chamber 6. Under the action of the rotating mechanism and the spiral groove, the light materials move upward while the heavier materials stay at the bottom of the mixing chamber 6. At the same time, because the fine-grained materials and air or water form a gas-solid two-phase mixed medium, a relatively stable gas-solid suspension with a certain density is formed, and the upward support of the water flow keeps the low-density minerals in the upper layer, so that the materials with the lowest density in the upper layer are first discharged through the discharge port 12 to obtain high-quality coal. ; while the rest of the materials continue to circulate, as the amount of materials entering the mixing chamber 6 gradually increases, the heavy materials gradually accumulate until they are discharged into the gangue discharge trough 11 through the bottom end of the feed port 13; in summary, the flotation separation of the utility model is to make the materials spirally tumble, utilize the combined effect of centrifugal force and hydraulic power to generate eddy currents, so that the bed is loose, and the particles are layered in different sections according to density, and at the same time utilize the buoyancy of the interaction between the mixed medium formed by the autogenous medium and the air and the particles, and then discharge the upper layer of high-quality coal from the discharge port 12 and the heavy materials from the feed port 13 along the spiral grooves, thereby achieving the purpose of coal selection.
[0035] like Figure 1 As shown, one end of the feed chute 10 located outside the rotating cylinder 8 is fixedly connected to one end of the movable plate 2 through a bracket 15.
[0036] like Figure 1 , Figure 2 As shown, the other end of the support rod 14 overlaps the upper surface of the bottom plate 1 and is movably connected to the bottom plate 1 .
[0037] The spiral drum gangue discharger provided by the utility model is configured such that a support rod 14 is screwed onto a movable plate 2, and the bottom end of the support rod 14 is abutted against a bottom plate 1, so that the angle between the movable plate 2 and the bottom plate 1 can be adjusted, thereby improving the sorting efficiency by changing the angle between the axis of the rotating drum 8 and the horizontal plane.
[0038] In this embodiment, the support rod 14 is a screw or a jack, and the angle between the movable plate 2 and the bottom plate 1 can be adjusted in the range of 0°-30°; when the angle is 20°-30°, a better coal washing effect can be achieved.
[0039] like Figure 1 , Figure 2 As shown, the rotating mechanism includes two pairs of roller mounting seats 4 arranged at intervals and rollers 5 mounted on each roller mounting seat 4, and a rotating cylinder 8 is placed above the rollers 5 and frictionally connected with the rollers 5;
[0040] It also includes a double-axis transmission motor 7 , each roller 5 is correspondingly connected to the two output shafts of the double-axis transmission motor 7 , and each roller mounting seat 4 and the double-axis transmission motor 7 are both installed on the movable plate 2 .
[0041] The spiral drum gangue discharger provided by the utility model uses a plurality of roller wheels 5 to drive the rotation of the rotating drum 8 through friction, so that the sorted materials make a spiral turning motion, forming multiple layers with different densities, and sorting is carried out by utilizing the buoyancy effect generated by the gradually increasing bed density.
[0042] In this embodiment, the diameter of the discharge port 12 of the rotating drum 8 is 400 mm - 1200 mm, the diameter of the feed port 13 is 1000 mm - 3000 mm, and the central axes of the discharge port 12 and the feed port 13 coincide.
[0043] In this embodiment, the hinge connecting the movable plate 2 and the bottom plate 1 is a hinge.
[0044] In this embodiment, the length of the mixing chamber 6 is 6000 mm - 11000 mm.
[0045] In the spiral drum gangue discharger provided by the utility model, if the length of the mixing chamber 6 is too short, the material sorting will be insufficient, affecting the sorting effect; if the length of the mixing chamber 6 is too long, the sorting time will be too long, reducing the production efficiency.
[0046] In this embodiment, the ratio of the length of the feeding trough 10 extending into the mixing chamber 6 to the length of the mixing chamber 6 is 2:3.
[0047] Such as Figure 1 、 Figure 2 As shown, the jet water pipe 9 includes a pipe body communicating with the movable plate 2, and further includes a plurality of spray holes arranged at intervals along the side wall of the pipe body in the length direction of the pipe body.
[0048] The specific implementation manner of the utility model is as follows:
[0049] When the spiral drum gangue discharger provided by the utility model is in use, the material to be sorted is put into the mixing chamber 6 through the feeding trough 10. At the same time, a small amount of water is injected into the feeding trough 10 through the jet water pipe 9 and enters the mixing chamber 6 along with the material to be sorted. The roller wheels 5 are driven by the double-shaft drive motor 7, and the roller wheels 5 drive the rotation of the rotating drum 8 through friction, driving the sorted materials to make a spiral turning motion, forming multiple layers with different densities. Under the action of the spiral grooves in the mixing chamber 6, the gangue in the sorted materials enters the gangue discharge trough 11 through the feed port 13, and the impurities such as minerals in the sorted materials are discharged through the discharge port 12, obtaining high-quality coal.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A spiral drum gangue discharger, characterized in that: The invention comprises a bottom plate (1) and a movable plate (2) installed above the bottom plate (1), one end of the movable plate (2) being hinged to one end of the bottom plate (1) through a hinge, and the other end of the movable plate (2) being connected to the bottom plate (1) through an angle adjustment mechanism, so that the movable plate (2) and the bottom plate (1) can be rotatably connected around the hinge; a rotating cylinder (8) arranged in parallel is provided above the movable plate (2), the rotating cylinder (8) being installed on the movable plate (2) through a rotating mechanism, a mixing chamber (6) being provided inside the rotating cylinder (8), a discharge port (12) and a feed port (13) being connected to the mixing chamber (6) being provided on opposite sides of the rotating cylinder (8), respectively, and a spiral groove being provided on the inner wall of the mixing chamber (6); wherein the diameter of the discharge port (12) is smaller than the diameter of the mixing chamber (6); It also includes a feed trough (10) installed at one end of the movable plate (2), one end of the feed trough (10) extends from the feed inlet (13) to the mixing chamber (6), and a jet water pipe (9) is also arranged parallel to the top of the feed trough (10); A gangue discharge chute (11) is also installed below the feed port (13), and the gangue discharge chute (11) is installed on the movable plate (2).
2. The spiral drum gangue discharger according to claim 1, characterized in that: One end of the material feeding trough (10) located outside the rotating cylinder (8) is fixedly connected to one end of the movable plate (2) through a bracket (15).
3. The spiral drum gangue discharger according to claim 2, characterized in that: The angle adjustment mechanism comprises a threaded hole penetrating the movable plate (2), in which a support rod (14) is threaded; the other end of the support rod (14) is overlapped on the upper surface of the bottom plate (1) and is movably connected to the bottom plate (1).
4. The spiral drum gangue discharger according to claim 3 is characterized in that: The support rod (14) is a lead screw or a jack, and the angle between the movable plate (2) and the bottom plate (1) can be adjusted in the range of 0°-30°.
5. The spiral drum gangue discharger according to claim 4, characterized in that: The rotating mechanism comprises two pairs of roller mounting seats (4) arranged at intervals and rollers (5) mounted on the roller mounting seats (4); a rotating cylinder (8) is placed above the rollers (5) and is frictionally connected to the rollers (5); It also includes a double-shaft transmission motor (7), each roller (5) is respectively connected to the two output shafts of the double-shaft transmission motor (7), and each roller mounting seat (4) and the double-shaft transmission motor (7) are both mounted on the movable plate (2).
6. The spiral drum gangue discharger according to claim 5, characterized in that: The diameter of the discharge port (12) of the rotating drum (8) is 400 mm-1200 mm, the diameter of the feed port (13) is 1000 mm-3000 mm, and the central axis of the discharge port (12) coincides with the central axis of the feed port (13).
7. The spiral drum gangue discharger according to claim 6, characterized in that: The hinged part connecting the movable plate (2) and the bottom plate (1) is a hinge.
8. The spiral drum gangue discharger according to claim 7, characterized in that: The length of the mixing chamber (6) is 6000mm-11000mm.
9. The spiral drum gangue discharger according to claim 8, characterized in that: The ratio of the length of the material inlet chute (10) extending into the material mixing chamber (6) to the length of the material mixing chamber (6) is 2:
3.
10. The spiral drum gangue discharger according to claim 9, characterized in that: The jet water pipe (9) comprises a pipe body connected to the movable plate (2), and also comprises a plurality of spray holes arranged at intervals on the side wall of the pipe body along the length direction of the pipe body.