Coal dressing device

Abstract

The utility model discloses a coal dressing device which comprises an outer shell and a screening platform, the outer shell is fixed to the screening platform, a feeding port is formed in the upper end of the outer shell, a material collecting hopper is fixed to the position, below the feeding port, in the outer shell, a material distributing cone is arranged below the material collecting hopper, a vertical cylinder is arranged below the material distributing cone, and a screen is connected between the outer side of the vertical cylinder and the inner wall of the outer shell. A hole is formed in the middle of the screening platform, a grading ring is fixed to the upper end of the hole, a material leakage hole is formed between the vertical cylinder and the grading ring, and an air blowing nozzle is arranged on the inner wall of the shell. Through the arrangement of the screening platform, the outer shell, the material gathering hopper, the material distributing cone, the screen, the vertical cylinder, the air blowing nozzle and the grading ring, coal enters the material gathering hopper and is guided and dispersed to the screen through the material distributing cone, small-particle coal flows downwards through the screen, and under blowing of the air blowing nozzle, light coal gets close to the vertical cylinder and falls into a material leaking hole; heavy coal gangue falls on the outer side of the grading ring, coal and coal gangue separation is achieved, and high efficiency and convenience are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal preparation equipment, and in particular relates to a coal preparation device. Background Technology

[0002] Coal mining is an industry primarily focused on mining coal resources. It is one of the country's main energy sources and a crucial pillar of the national economy. The entire closed-loop operation of the coal industry utilizes coal mining equipment, coal crushing equipment, coal transportation equipment, and coal screening and preparation devices.

[0003] Regarding coal preparation equipment, a search revealed a utility model patent with publication number CN219850600U, which discloses an anti-clogging coal preparation machine, such as... Figure 1 As shown, it mainly includes a cylinder a, a cover plate b at the upper end of the cylinder a, a feed hopper c on one side of the cover plate b, a screen c in the middle of the cylinder a, a drive rod d vertically in the center of the cylinder a, the drive rod d is connected to the motor m, and a cleaning component e is provided at the bottom of the drive rod d. When loose coal is put into the cylinder, the coal can be screened.

[0004] In practice, existing coal preparation machines similar to the above-mentioned solutions have been found to have shortcomings: they only screen the coal by particle size and cannot remove mineral impurities such as coal gangue, making them inefficient and inconvenient. Utility Model Content

[0005] In view of the shortcomings and defects in the existing technology, the purpose of this utility model is to provide a coal preparation device that solves the problem that existing coal preparation machines, such as those in the background technology, only screen the particle size of coal but cannot remove mineral impurities such as coal gangue, which is not efficient and convenient.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a coal preparation device, including an outer shell and a screening platform, the outer shell being fixed on the screening platform, a feed inlet being provided at the upper end of the outer shell, a material gathering hopper that is wider at the top and narrower at the bottom being fixed below the feed inlet inside the outer shell, a conical material distribution cone being provided below the material gathering hopper, the tip of the material distribution cone pointing upwards, a vertical cylinder being provided below the material distribution cone inside the outer shell, an open top and a closed bottom, a gap being provided between the bottom of the material distribution cone and the vertical cylinder, a screen being connected between the outer side of the vertical cylinder and the inner wall of the outer shell, an opening being provided in the middle of the screening platform, a dividing ring being fixed at the upper end of the opening on the screening platform, the bottom of the vertical cylinder extending into the dividing ring, and a material leakage hole being formed between the vertical cylinder and the dividing ring, a plurality of air nozzles being provided on the inner wall of the outer shell, the plurality of air nozzles being located below the screen, and the air nozzles being connected to an air source.

[0007] As a further improvement of the utility model, the lower shell body is fixed with a first vertical ladder at the front side, a ring of upper guardrails is arranged at the outer side of the upper end of the closing plate, and the upper guardrails are provided with an opening at the first vertical ladder, and one side of the upper shell body is provided with an openable upper door.

[0008] As a further improvement of the utility model, the lower shell body is fixed with a first vertical ladder at the front side, a ring of upper guardrails is arranged at the outer side of the upper end of the closing plate, and the upper guardrails are provided with an opening at the first vertical ladder, and one side of the upper shell body is provided with an openable upper door.

[0009] As a further improvement of the utility model, the lower shell body is fixed with a first vertical ladder at the front side, a ring of upper guardrails is arranged at the outer side of the upper end of the closing plate, and the upper guardrails are provided with an opening at the first vertical ladder, and one side of the upper shell body is provided with an openable upper door.

[0010] As a further improvement of the utility model, the lower shell body is fixed with a first vertical ladder at the front side, a ring of upper guardrails is arranged at the outer side of the upper end of the closing plate, and the upper guardrails are provided with an opening at the first vertical ladder, and one side of the upper shell body is provided with an openable upper door.

[0011] As a further improvement of the utility model, the distributing cone is rotatably arranged in the outer shell body.

[0012] As a further improvement of the utility model, a rotating shaft is rotatably connected in the vertical cylinder, the upper end of the rotating shaft is fixedly connected with the distributing cone, the bottom of the rotating shaft is connected with a motor for driving the rotating shaft to rotate, at least one supporting ring is arranged in the vertical cylinder, and a plurality of supporting strips rotatably connected with the supporting ring are fixedly arranged on the rotating shaft.

[0013] As a further improvement of the utility model, a ring is detachably arranged on the inner wall of the outer shell body at the position where the screen is arranged, the outer side of the screen is fixed on the ring, a telescopic piece is rotatably connected on the inner side of the ring, a cleaning strip is fixed on the end of the telescopic piece, and the bottom of the cleaning strip is in contact with the screen.

[0014] As a further improvement of the utility model, a turnable and openable discharging door is arranged on the screening platform, and the discharging door is located on the inner side of the outer shell body and the outer side of the grading ring.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. Through setting a screening platform, and setting an outer shell on the screening platform, a material collecting hopper, a material distributing cone, a screen, a vertical cylinder, a blowing nozzle and a grading ring are arranged in the outer shell, in working, coal enters into the material collecting hopper from the feeding port, the material collecting hopper gathers the unevenly entered coal to the center, the gathered coal enters into the lower material distributing cone, the material distributing cone uniformly guides and distributes the gathered coal to the outside of the screen, then the screen screens the coal, the large particle coal remains on the screen, the small particle coal flows downward through the screen, in the process of the coal flowing downward, the blowing nozzle blows to the center, then the lighter coal approaches the vertical cylinder, and falls into the downstream conveyor from the leakage hole in the grading ring, while the heavier coal falls on the outside of the grading ring, so that the separation of the coal and the coal gangue is realized, and after the coal is preliminarily screened, the coal gangue in the coal is further separated and selected, so that the accurate coal selection and the high efficiency and convenience are realized.

[0017] In addition, the material distributing cone is arranged, which can uniformly distribute the coal, increase the uniform distribution of the coal on the screen, improve the screening efficiency of the screen, break the large coal, and reduce the sticky coal, that is, when the coal falls on the material distributing cone, the tip of the material distributing cone impacts and breaks the coal, and the coal is preliminarily layered under the action of the gravitational inertial force, when the coal flows downward on the material distributing cone, the lighter coal easily approaches the material distributing cone, and falls into the vertical cylinder, while the heavier coal easily slides to the outside edge, so that the subsequent separation of the coal and the coal gangue is facilitated.

[0018] 2. The outer shell is arranged as a lower shell and an upper shell, a first vertical ladder is fixed on the front side of the lower shell, an upper guardrail is arranged on the outer side of the upper end of the closing plate, and the upper guardrail is provided with an opening at the first vertical ladder, and a lower open door is arranged on one side of the lower shell, so that the workers can climb to the closing plate and enter the upper shell through the upper open door for maintenance or maintenance.

[0019] 3. A second vertical ladder is arranged on the front side of the screening platform, a lower guardrail is arranged around the upper end of the screening platform, and the lower guardrail is provided with an opening at the first vertical ladder, and a lower open door is arranged on one side of the lower shell, so that the workers can climb to the screening platform and enter the lower shell through the lower open door for maintenance or maintenance.

[0020] 4. The lower reinforcing strip and the upper reinforcing strip are arranged, so as to improve the connection firmness and stability of the vertical cylinder.

[0021] 5. The material distributing cone is rotatably arranged in the outer shell, so that the heavier coal gangue is thrown to the outside by the centrifugal inertial force, and the separation of the coal gangue and the coal is further facilitated.

[0022] 6. By setting a circular ring, a retractable telescopic component is rotatably connected to the inner side of the ring. A cleaning strip is fixed to the end of the telescopic component. When the telescopic component extends, it can drive the cleaning strip to push the coal on the screen inward to the inside of the vertical cylinder. The telescopic component rotates, so that the position of the cleaning strip on the screen moves. Thus, through the rotation and continuous extension and retraction of the telescopic component, the cleaning strip pushes large coal particles into the vertical cylinder, thereby cleaning the screen.

[0023] 7. By setting up a discharge gate, the discharge gate can be opened periodically to facilitate the removal of coal gangue. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the existing technology;

[0026] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 3 for Figure 2 A half-section plan view (excluding the upper and lower guardrails);

[0028] Figure 4 for Figure 3 AA section view;

[0029] Figure 5 for Figure 3 Enlarged view at point B;

[0030] Figure 6 for Figure 3 Enlarged view at point C;

[0031] Figure 7 for Figure 3 Enlarged view at point D;

[0032] In the diagram: 1. Screening platform; 2. Outer shell; 201. Lower shell; 202. Upper shell; 203. Enclosure plate; 3. Feed inlet; 4. Gathering hopper; 5. Dividing cone; 6. Vertical cylinder; 7. Screen; 8. Dividing ring; 9. Leakage hole; 10. Air nozzle; 11. Upper guardrail; 12. Lower guardrail; 13. Lower opening door; 14. Lower reinforcing strip; 15. Rotating shaft; 16. Motor; 17. Support ring; 18. Support strip; 19. Ring; 20. Telescopic component; 21. Cleaning strip; 22. Discharge door; 23. Fan; 24. Conveyor; 25. Air chamber; 26. First vertical ladder; 27. Second vertical ladder; 28. Outlet; 29. ​​Discharge pipe; 30. Crushing disc. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 2-6The present invention will be described in further detail below. For clarity, only the structures relevant to the inventive features of the present invention are shown in the figures.

[0034] For ease of description, the coordinate system is defined as follows: Figure 2 As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0035] This utility model discloses a coal preparation device. (Refer to...) Figure 2 and Figure 3 A coal preparation device includes an outer shell 2 and a screening platform 1. A conveyor 24 or other conveying equipment is located below the screening platform 1. The outer shell 2 is fixed to the screening platform 1. A feed inlet 3 is located at the upper end of the outer shell 2. A material gathering hopper 4, wider at the top and narrower at the bottom, is fixed inside the outer shell 2 below the feed inlet 3. A conical material distribution cone 5 is located below the material gathering hopper 4, with the tip of the cone 5 pointing upwards. Below the material distribution cone 5, a vertical cylinder 6, open at the top and closed at the bottom, is located inside the outer shell 2. Figure 4 As shown, the bottom outer side of the vertical cylinder 6 is connected and fixed to the inner wall of the opening of the screening platform 1 by multiple lower reinforcing strips 14. The upper outer side of the vertical cylinder 6 is connected by multiple upper reinforcing strips (not shown in the figure). The shape and arrangement of the upper reinforcing strips can refer to the lower reinforcing strips 14. The upper reinforcing strips can be set at the bottom of the screen 7 to support and reinforce the screen 7.

[0036] When set up, there is a gap between the bottom of the distribution cone 5 and the vertical cylinder 6. The bottom diameter of the distribution cone 5 is larger than the diameter of the vertical cylinder 6, which facilitates the entry of large coal particles into the vertical cylinder 6 and prevents coal gangue from approaching the vertical cylinder 6. In addition, an outlet 28 can be set at one end of the vertical cylinder 6. The outlet 28 can be connected to the discharge pipe 29 extending to the outside of the outer shell 2, which facilitates the extraction of coal from the vertical cylinder 6.

[0037] like Figure 3 As shown, a screen 7 is connected between the outer side of the vertical cylinder 6 and the inner wall of the outer shell 2. Furthermore, in this embodiment, as... Figure 6As shown, the outer shell 2 inner wall in the position of setting screen 7 through bolt detachable ring 19 is provided, the screen 7 outside is fixed on the ring 19, the ring 19 inside rotationally connected with a telescopic telescopic piece 20, telescopic piece 20 can adopt electric push rod, telescopic piece 20 can be provided with the walking motor 16 (not shown) that can drive its rotation, the end of telescopic piece 20 is fixed with a cleaning strip 21, the bottom of cleaning strip 21 is in contact with screen 7, telescopic piece 20 extends so that it can drive cleaning strip 21 to push the coal on screen 7 to the inside of vertical cylinder 6, telescopic piece 20 rotates, realizes the position of cleaning strip 21 on screen 7 moves, and then through the rotation and continuous telescopic of telescopic piece 20, drive cleaning strip 21 to push large coal particles into vertical cylinder 6, realize the cleaning of screen 7.

[0038] The middle of screening platform 1 is provided with an opening, the upper end of screening platform 1 is fixed with a grading ring 8 in the opening, the bottom of vertical cylinder 6 extends into grading ring 8, and the leakage hole 9 is formed between vertical cylinder 6 and grading ring 8, a plurality of air blowers 10 are provided on the inner wall of outer shell 2, a plurality of air blowers 10 are all below screen 7, and air blowers 10 are connected with air source, air source can adopt fan 23, specifically, as shown in Figure 3 and Figure 7 The air cavity 25 can be provided on the inner wall of outer shell 2, air blowers 10 are provided inside air cavity 25, and air cavity 25 is connected with fan 23 outside.

[0039] In addition, for the material distribution cone 5, the material distribution cone 5 is rotatably arranged in the outer shell 2, so that the heavier coal gangue can be thrown to the outside by using the centrifugal force and inertial force, further facilitating the separation of coal gangue and coal. Specifically, as shown in Figure 3 and Figure 5 A rotating shaft 15 is rotatably connected in the vertical cylinder 6, the upper end of the rotating shaft 15 is fixedly connected with the material distribution cone 5, the bottom of the rotating shaft 15 extends out of the vertical cylinder 6 and is connected with the motor 16 for driving the rotating shaft 15 to rotate, at least one supporting ring 17 is arranged in the vertical cylinder 6, a plurality of supporting strips 18 are fixedly connected with the supporting ring 17 on the rotating shaft 15, the supporting ring 17 and the supporting strip 18 are arranged to facilitate the stability of the rotating shaft 15. When working, the motor 16 is started, and the motor 16 can drive the rotating shaft 15 to rotate. In addition, the breaking piece 30 can also be arranged on the rotating shaft 15 to break the large coal particles in the vertical cylinder 6. Of course, when the material distribution cone 5 is not arranged to rotate, the motor 16 does not rotate, or the motor 16 is not used.

[0040] As shown in Figure 4 A turnable and open discharging door 22 is arranged on the screening platform 1, the discharging door 22 is located inside the outer shell 2 and outside the grading ring 8, so that the discharging door 22 can be opened regularly to facilitate the taking out of the coal gangue.

[0041] For the outer shell 2, as Figure 2 and Figure 3 shown, specifically includes the lower shell 201 and the upper shell 202, the lower shell 201 is cylindrical, and the lower shell 201 is fixed on the screening platform 1 at the lower end, the upper shell 202 is smaller in diameter than the lower shell 201, the upper end of the lower shell 201 is connected with the upper shell 202 through the closure plate 203, the lower shell 201 and the upper shell 202 are in communication, and the screen 7 is fixed at the bottom end inside the lower shell 201.

[0042] In addition, as Figure 2 shown, the lower shell 201 is fixed with the first vertical ladder 26 at the front side, the upper end of the closure plate 203 is provided with a ring of upper guardrails 11, and the upper guardrails 11 are provided with openings at the first vertical ladder 26, and one side of the upper shell 202 is provided with an openable upper door (not shown in the figure). By setting the outer shell 2 as the lower shell 201 and the upper shell 202, the lower shell 201 is fixed with the first vertical ladder 26 at the front side, the upper end of the closure plate 203 is provided with a ring of upper guardrails 11, and the upper guardrails 11 are provided with openings at the first vertical ladder 26, and one side of the lower shell 201 is provided with an openable lower door 13, so as to facilitate the staff to climb to the closure plate 203 and enter the upper shell 202 from the upper door for maintenance or maintenance.

[0043] In addition, as Figure 2 shown, the screening platform 1 is provided with the second vertical ladder 27 at the front side, and a ring of lower guardrails 12 is provided around the upper end of the screening platform 1, and the lower guardrails 12 are provided with openings at the first vertical ladder 26, and one side of the lower shell 201 is provided with an openable lower door 13. So as to facilitate the staff to climb to the screening platform 1 and enter the lower shell 201 from the lower door 13 for maintenance or maintenance.

[0044] The utility model discloses a screening platform 1 is set up to, and the shell body 2 is set up on screening platform 1, and the shell body 2 is set up in the gathering hopper 4, the material distribution cone 5, the screen 7, the vertical cylinder 6, the air blow mouth 10 and the grade ring 8, when working, coal enters the gathering hopper 4 from the feed inlet 3, and the gathering hopper 4 gathers the coal that enters unevenly to the center, and the coal after gathering enters the material distribution cone 5 below, and the material distribution cone 5 evenly guides the flow of the coal gathered to the screen 7 outside, and then the screen 7 selects the coal, and the coal of large particle stays on the screen 7, and the coal of small particle flows down through the screen 7, and in the process of the coal flowing down, the air blow mouth 10 blows to the center, and then the lighter coal is close to the vertical cylinder 6, and falls down from the leakage hole 9 in the grade ring 8 to the downstream conveyer 24, and the heavier coal gangue falls on the outside of the grade ring 8, and can be led out from the discharge door 22. Thus realizes the separation of coal and coal gangue, and then separates the coal gangue in the coal after the coal is preliminarily screened, realizes accurate coal selection, and is efficient and convenient.

[0045] In addition, the setting of the material distribution cone 5, first, can uniformly disperse the coal, increase the uniform distribution of the coal on the screen 7, improve the screening efficiency of the screen 7, second, can break the large coal, reduce the sticky block of the coal, third, under the action of the gravitational inertial force, preliminarily stratifies the coal, the lighter coal is easy to close to the material distribution cone 5, and when falling down, is closer to the vertical cylinder 6, and the heavier coal is easy to slide to the outside edge, thereby facilitating the separation of the coal and the coal gangue.

[0046] In the description of the utility model, it is to be explained that, unless there is definite and limited, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances. It should be understood that the specific embodiment described here is only for understanding the utility model, and is not used to limit the utility model, and all other embodiments obtained by ordinary skilled in the art without making creative labor are within the scope of the utility model protection.

Claims

1. A coal coal preparation plant comprising an outer housing, characterised in that: The shell body is fixed on the screening platform, the upper end of the shell body is provided with a feeding port, an upper wide and lower narrow gathering hopper is fixed below the feeding port in the shell body, a tapered distributing cone is arranged below the gathering hopper in the shell body, the tip of the distributing cone is upward, an upper open and bottom closed vertical cylinder is arranged below the distributing cone in the shell body, a gap is arranged between the bottom of the distributing cone and the vertical cylinder, a screen is connected between the outer side of the vertical cylinder and the inner wall of the shell body, a hole is arranged in the middle of the screening platform, a grading ring is fixed on the upper end of the hole on the screening platform, the bottom of the vertical cylinder extends into the grading ring, and the leakage hole is formed between the vertical cylinder and the grading ring, a plurality of air blow nozzles are arranged on the inner wall of the shell body, the plurality of air blow nozzles are below the screen, and the air blow nozzles are connected with the air source.

2. A coal cleaning apparatus as claimed in claim 1, wherein: The shell body includes a lower shell and an upper shell, the lower shell is cylindrical, and the lower end of the lower shell is fixed on the screening platform, the diameter of the upper shell is smaller than that of the lower shell, the upper end of the lower shell is connected with the upper shell through a closing plate, the inside of the lower shell and the upper shell is communicated, and the screen is fixed on the inner bottom end of the lower shell.

3. A coal cleaning apparatus as claimed in claim 2, wherein: The first vertical ladder is fixed on the front side of the lower shell, the upper end of the closing plate is provided with an upper guardrail, and the upper guardrail is provided with an opening at the first vertical ladder, and the side of the upper shell is provided with an openable upper door.

4. A coal cleaning apparatus as claimed in claim 2, wherein: The second vertical ladder is arranged on the front side of the screening platform, the lower end of the screening platform is provided with a lower guardrail, and the lower guardrail is provided with an opening at the first vertical ladder, and the side of the lower shell is provided with an openable lower door.

5. A coal cleaning apparatus as claimed in claim 1, wherein: The bottom outer side of the vertical cylinder is connected and fixed with the inner wall of the opening of the screening platform through a plurality of lower reinforcing strips, and the upper outer side of the vertical cylinder is connected and fixed with the inner wall of the shell body through a plurality of upper reinforcing strips.

6. A coal cleaning apparatus as claimed in claim 1, wherein: The distributing cone is rotatably arranged in the shell body.

7. A coal cleaning apparatus as claimed in claim 1, wherein: A rotating shaft is rotatably connected in the vertical cylinder, the upper end of the rotating shaft is fixedly connected with the distributing cone, the bottom of the rotating shaft is connected with a motor for driving the rotating shaft to rotate, at least one supporting ring is arranged in the vertical cylinder, and a plurality of supporting strips rotatably connected with the supporting ring are fixed on the rotating shaft.

8. A coal cleaning apparatus as claimed in claim 1, wherein: A ring is detachably arranged on the position of the screen on the inner wall of the shell body, the outer side of the screen is fixed on the ring, a telescopic piece is rotatably connected to the inner side of the ring, a cleaning strip is fixed on the end of the telescopic piece, and the bottom of the cleaning strip is in contact with the screen.

9. A coal cleaning apparatus as claimed in claim 1, wherein: A turnover opening discharge door is arranged on the screening platform, and the discharge door is located on the inner side of the shell body and the outer side of the grading ring.

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