Coal mill

Abstract

The invention relates to the technical field of coal treatment, in particular to a coal mill which comprises a supporting component, and the supporting component comprises a bottom supporting ring and a supporting rod arranged at the top of the bottom supporting ring; the power component comprises a separation cone barrel and a connecting ring arranged on the outer side of the top of the separation cone barrel; the crushing component comprises an outer cylinder, an inner cylinder structure arranged in the outer cylinder, a feeding pipe arranged on the side face of the inner cylinder structure and a feeding opening formed in the top of the feeding pipe; fuel coal to be crushed is added into the device from the feeding port, the fuel coal is crushed in the crushing component, the crushed fuel coal is changed into coal particles which are discharged into the separation conical barrel from the outer barrel, scrap iron generated in the crushing process is also discharged into the separation conical barrel together, and the coal particles are directly discharged out of the separation conical barrel for next-step production. The scrap iron is separated in the separation cone barrel, discharged into the separation component and separated, collected and recycled in the separation component.

Description

Technical Field

[0001] The present invention relates to the technical field of coal processing, in particular to a coal mill. Background Art

[0002] Coal pulverizers are crucial auxiliary equipment for coal-fired boilers in thermal power plants. Their primary function is to process raw coal for efficient and stable combustion in the boiler. Coal pulverizers mechanically crush and grind the raw coal. The resulting pulverized coal, pre-treated by the pulverizer, has a smaller and more uniform particle size, enabling more efficient combustion in the boiler. However, raw coal contains a certain amount of moisture; excessive moisture can affect its combustion performance and even lead to unstable combustion. Therefore, most pulverizers introduce hot air during the pulverization process to remove some of the moisture. This process also produces iron filings, which primarily originate from impurities in the coal (such as iron ore fragments) and wear and tear on the pulverizer's components during operation. These iron filings typically possess a certain degree of magnetic properties, making them suitable for separation from waste materials using magnetic separation. Furthermore, their chemical properties are relatively stable, allowing them to be recycled and reused after simple processing, offering significant economic and environmental advantages.

[0003] However, if a magnetic separation process is set up to recycle iron filings in waste materials, it will increase production costs, extend separation time, and be detrimental to production efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to separate and collect the iron filings generated in the coal grinding process without adding a magnetic separation process.

[0005] The above technical problem is solved by the following technical solution: The present invention proposes a coal mill, which includes a support member, the support member includes a bottom support ring and a support rod arranged on the top of the bottom support ring; and

[0006] A power component, comprising a separation cone barrel and a connecting ring disposed on the outer side of the top of the separation cone barrel; and

[0007] A crushing member, comprising an outer cylinder, an inner cylinder structure disposed inside the outer cylinder, a feed pipe disposed on a side of the inner cylinder structure, and a feed port disposed on the top of the feed pipe; and

[0008] Separate components.

[0009] As a preferred solution of the coal mill described in the present invention, a motor is provided at the top of the support rod, a center rod is provided at the bottom of the motor, the outer wall of the center rod is connected to the separation cone barrel through a connecting rod, a discharge pipe is provided at the bottom of the separation cone barrel, and an opening is opened at the top of the separation cone barrel.

[0010] As a preferred solution of the coal mill of the present invention, a sloped platform is provided on the top of the bottom support ring, the top of the sloped platform is in contact with the connecting ring, and the top of the connecting ring is provided with conical teeth.

[0011] As a preferred solution of the coal mill of the present invention, the separation component includes a partition plate arranged at the bottom of the outer cylinder, a coal outlet is opened on the outer wall of the partition plate, and an annular magnet is arranged at the bottom of the partition plate.

[0012] As a preferred solution of the coal mill of the present invention, the top of the outer cylinder is connected to the support rod via a connecting frame, and the bottom of the outer cylinder is connected to the coal discharge port.

[0013] As a preferred solution of the coal mill described in the present invention, the inner cylinder structure includes a roller arranged on the inner wall of the outer cylinder, the outer wall of the roller is provided with a small hole, a collision member is provided inside the roller, and a bevel gear is provided at the end of the roller away from the motor.

[0014] As a preferred solution of the coal mill of the present invention, the bevel gear is engaged with the conical teeth, one end of the drum close to the bevel gear is connected to the feed pipe, and one end of the drum close to the motor is provided with fan blades.

[0015] As a preferred solution of the coal mill of the present invention, ventilation holes are provided at both ends of the drum.

[0016] As a preferred solution of the coal mill of the present invention, a waste cone barrel is provided on the outer wall of the separation cone barrel, the outer wall of the waste cone barrel is connected to the inclined platform, and a waste discharge pipe is provided at the bottom of the waste cone barrel.

[0017] As a preferred solution of the coal mill of the present invention, a vertical rod is provided on the top of the inclined platform, and the top of the vertical rod is connected to the feed pipe.

[0018] The beneficial effects of the present invention are as follows: the device can crush the burning coal by means of the crushing component, and at the same time separate the iron scraps generated by the crushing from the coal particles and collect them. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0020] Figure 1 The overall structural diagram of the coal mill of the present invention is shown;

[0021] Figure 2 shows a schematic structural diagram of a power component;

[0022] Figure 3 shows a schematic structural diagram of a crushing component;

[0023] Figure 4 A structural schematic diagram of the inner cylinder structure is shown. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0027] Example 1, with reference to Figures 1 to 4 , which is the first embodiment of the present invention, provides a coal mill, including a support member 1, such as Figure 2 As shown, the support member 1 includes a bottom support ring 11 and a support rod 12 provided on the top of the bottom support ring 11, and the support member 1 provides support for the entire coal mill; and,

[0028] Power component 2, such as Figure 2 As shown, the power component 2 includes a separation cone barrel 23 and a connecting ring 25 provided on the outer side of the top of the separation cone barrel 23. The power component 2 provides power for the entire coal mill. The separation cone barrel 23 rotates during the coal grinding process. When the crushed coal particles and the iron chips therein fall into the separation cone barrel 23, the coal particles will be directly discharged from the device, and the iron chips will be separated out; and

[0029] Crushing component 3, such as Figure 3As shown, the crushing member 3 includes an outer cylinder 31, an inner cylinder structure 32 arranged inside the outer cylinder 31, a feed pipe 33 arranged on the side of the inner cylinder structure 32, and an inlet 34 arranged on the top of the feed pipe 33. The coal to be crushed is added from the inlet 34, and the coal enters the inner cylinder structure 32 from the inlet 34 through the feed pipe 33, and is crushed inside the inner cylinder structure 32. The crushed coal particles and iron filings are discharged into the separation cone 23 together; and

[0030] The separation member 4 is arranged below the separation cone barrel 23. The separation member 4 cooperates with the separation cone barrel 23 to separate the iron chips from the coal particles and collect the iron chips. The separation and collection of the iron chips are completed during the coal grinding process. This device can achieve a coal crushing effect.

[0031] Specifically, the coal to be crushed is added to the device from the feed port 34, and the coal enters the crushing component 3 through the feed port 34. The coal is crushed in the crushing component 3, and the crushed coal becomes coal particles and is discharged from the outer cylinder 31 into the separation cone barrel 23. The iron filings generated during the crushing are also discharged into the separation cone barrel 23. The coal particles are directly discharged from the separation cone barrel 23 for the next production step. The iron filings are separated in the separation cone barrel 23 and discharged into the separation component 4, where they are separated, collected, and recycled.

[0032] Example 2, reference Figures 1 to 4 , which is the second embodiment of the present invention, is different from the previous embodiment in that, Figure 2 As shown, a motor 21 is provided at the top of the support rod 12, and the motor 21 is connected to the support member 1 through the support rod 12. The motor 21 is fixed, and a center rod 22 is provided at the bottom of the motor 21. The outer wall of the center rod 22 is connected to the separation cone barrel 23 through a connecting rod. The rotation of the motor 21 will drive the center rod 22 and the separation cone barrel 23 to rotate together. A discharge pipe 24 is provided at the bottom of the separation cone barrel 23, and the side of the separation cone barrel 23 is fixedly connected to the connecting ring 25. The bottom of the connecting ring 25 is in contact with the support member 1, and the connecting ring 25 will rotate with the separation cone barrel 23. The connecting ring 25 can rotate on the support member 1, and an opening 27 is provided at the top of the separation cone barrel 23. Iron filings in the separation cone barrel 23 are discharged from the opening 27.

[0033] Further, such as Figure 2 As shown, a ramp 13 is provided on the top of the bottom support ring 11. The top of the ramp 13 contacts the connecting ring 25. The ramp 13 provides support for the connecting ring 25. The connecting ring 25 can rotate on the ramp 13. The top of the connecting ring 25 is provided with conical teeth 26.

[0034] Further, such as Figure 3As shown, the separation member 4 includes a partition 41 arranged at the bottom of the outer cylinder 31, the partition 41 covers the separation cone barrel 23, the top of the partition 41 is fixedly connected to the outer cylinder 31, the partition 41 and the connecting ring 25 can directly rotate relative to each other, and the outer wall of the partition 41 is provided with a coal lowering port 42, and the coal particles in the crushing member 3 enter the separation cone barrel 23 from the coal lowering port 42. The bottom of the partition 41 is provided with a ring magnet 43.

[0035] Further, such as Figure 3 As shown, the top of the outer cylinder 31 is connected to the support rod 12 through a connecting frame. The outer cylinder 31 is fixed during the coal grinding process. The bottom of the outer cylinder 31 is connected to the coal lower port 42. The crushed coal particles and the generated iron filings in the crushing member 3 will pass through the outer cylinder 31 and the coal lower port 42 into the separation cone barrel 23. The iron filings in the coal particles are separated in the separation cone barrel 23, and the coal particles are directly discharged from the device, and the iron filings are separated and collected for recycling.

[0036] Further, such as Figure 4 As shown, the inner cylinder structure 32 includes a roller 321 arranged on the inner wall of the outer cylinder 31, and the roller 321 will rotate inside the outer cylinder 31. The outer wall of the roller 321 is provided with a small hole 322, and the coal enters the roller 321 from the feed port 34 through the feed pipe 33. The interior of the roller 321 is provided with a collision member, preferably, the collision member can be a steel ball. When the roller 321 rotates, the steel ball and the coal move together in the roller 321, and the steel ball crushes and collides with the coal during the movement to break it. After the crushed coal forms coal particles with a diameter smaller than the small hole 322, it is connected with iron filings and discharged into the outer cylinder 31 through the small hole 322. The iron filings and coal particles are discharged from the outer cylinder 31 into the separation cone barrel 23 together. A bevel gear 323 is provided at the end of the roller 321 away from the motor 21.

[0037] Further, such as Figure 2 As shown, the bevel gear 323 is engaged with the conical teeth 26. When the motor 21 drives the center rod 22 and the separation cone barrel 23 to rotate, the connecting ring 25 will also rotate together, so the conical teeth drive the bevel gear 323 to rotate. At this time, the drum 321 will rotate to crush the coal in the drum 321. The end of the drum 321 close to the bevel gear 323 is connected to the feed pipe 33. The end of the drum 321 close to the motor 21 is provided with a fan blade 324. The rotation of the drum 321 will drive the fan blade 324 to rotate.

[0038] Further, such as Figure 4 As shown, ventilation holes 325 are provided at both ends of the drum 321. The ventilation holes 325 provided at both ends of the drum 321 allow air to circulate inside the drum 321, thereby facilitating the removal of moisture in the coal.

[0039] Further, such as Figure 4 As shown, a waste cone barrel 44 is provided on the outer wall of the separation cone barrel 23. The outer wall of the waste cone barrel 44 is connected to the inclined platform 13. The top outer diameter of the waste cone barrel 44 is slightly larger than the top outer diameter of the separation cone barrel 23. The iron filings in the separation cone barrel 23 will fall into the waste cone barrel 44 after being discharged through the opening 27 and will be collected and discharged for easy recycling. A waste discharge pipe 45 is provided at the bottom of the waste cone barrel 44. The waste discharge pipe 45 is connected to the bottom of the waste cone barrel 44 to discharge the iron filings in the waste cone barrel 44 out of the device.

[0040] Further, such as Figure 2 As shown, a vertical rod 14 is provided on the top of the inclined platform 13 , and the top of the vertical rod 14 is connected to the feeding pipe 33 , and the vertical rod 14 provides support for the feeding pipe 33 .

[0041] Specifically, when crushing coal, the coal is fed into the drum 321 from the feed port 34 through the feed pipe 33. The rotation of the motor 21 drives the separation cone barrel 23 and the connecting ring 25 to rotate. The connecting ring 25 drives the drum 321 to roll through the conical teeth 26. The collision body in the drum 321 impacts and crushes the coal, and the coal particles and iron filings produced after crushing are discharged from the small hole 322 into the outer drum 31, and then discharged into the separation cone barrel 23 through the outer drum 31.

[0042] Raw coal often contains a large amount of moisture. Ventilation holes are provided at both ends of the drum 321. The fan blades 324 provided at the end of the drum 321 close to the motor 21 rotate as the drum 321 rolls. The motor 21 generates heat during operation, and hot air is generated around the motor 21. The fan blades 324 rotate to take away the hot air and introduce it into the drum 321. The hot air is then discharged from the vents at the end of the drum 321 away from the motor 21, which can take away some of the moisture in the raw coal in the drum 321, thereby improving the quality of the crushed coal particles. At the same time, the hot air around the motor 21 is taken away, which can help cool the motor 21 and protect it.

[0043] The crushing of coal will produce iron chips, which will be discharged into the separation cone barrel 23 along with the coal particles through the outer cylinder 31. The annular magnet 43 provided at the bottom of the partition 41 is located above the separation cone barrel 23. In the rotating separation cone barrel 23, the coal particles and iron chips fall into contact with the oblique inner wall of the separation cone barrel 23 and will rotate with the separation cone barrel 23. During the rotation, due to the centrifugal effect, they will tend to move away from the center rod 22. However, due to the action of gravity, the coal will be discharged from the separation cone barrel 23 from the discharge pipe 24 during the rotation, while the iron chips will be discharged from the separation cone barrel 23. The longitudinal direction is not only affected by gravity, but also by the magnetic attraction of the magnet. The magnetic force will offset part of the gravity. Therefore, under the dual action of centrifugal force and magnetic force, the iron filings will overcome gravity, move away from the center rod 22, and move upward on the outer wall of the separation cone barrel 23 until they move to the opening 27 and separate from the separation cone barrel 23. At this time, there is no separation cone barrel 23 to provide support for the iron filings. The iron filings will be discharged from the opening 27 and fall into the waste cone barrel 44, and then discharged from the waste cone barrel 44 through the waste pipe 45, completing the collection and recycling of the iron filings.

[0044] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0045] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0046] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A coal mill, characterized in that: include, A support member (1), comprising a bottom support ring (11) and a support rod (12) disposed on the top of the bottom support ring (11); and A power component (2), the power component (2) comprising a separation cone barrel (23) and a connecting ring (25) arranged on the outer side of the top of the separation cone barrel (23); and A crushing member (3), the crushing member (3) comprising an outer cylinder (31), an inner cylinder structure (32) arranged inside the outer cylinder (31), a feed pipe (33) arranged on the side of the inner cylinder structure (32), and a feed port (34) arranged on the top of the feed pipe (33); and Separating member (4).

2. The coal mill according to claim 1, wherein: A motor (21) is provided at the top of the support rod (12), a center rod (22) is provided at the bottom of the motor (21), the outer wall of the center rod (22) is connected to the separation cone barrel (23) through a connecting rod, a discharge pipe (24) is provided at the bottom of the separation cone barrel (23), and an opening (27) is opened at the top of the separation cone barrel (23).

3. The coal mill according to claim 2, wherein: A ramp (13) is provided on the top of the bottom support ring (11), the top of the ramp (13) is in contact with the connecting ring (25), and the top of the connecting ring (25) is provided with conical teeth (26).

4. The coal mill according to claim 3, wherein: The separation member (4) comprises a partition (41) arranged at the bottom of the outer cylinder (31), a coal lowering opening (42) is provided on the outer wall of the partition (41), and an annular magnet (43) is provided at the bottom of the partition (41).

5. The coal mill according to claim 4, characterized in that: The top of the outer cylinder (31) is connected to the support rod (12) via a connecting frame, and the bottom of the outer cylinder (31) is connected to the coal lowering port (42).

6. The coal mill according to claim 5, characterized in that: The inner cylinder structure (32) comprises a roller (321) arranged on the inner wall of the outer cylinder (31), a small hole (322) is opened on the outer wall of the roller (321), a collision member is arranged inside the roller (321), and a bevel gear (323) is arranged at one end of the roller (321) away from the motor (21).

7. The coal mill according to claim 6, characterized in that: The bevel gear (323) is meshed with the conical teeth (26), one end of the roller (321) close to the bevel gear (323) is connected to the feed pipe (33), and one end of the roller (321) close to the motor (21) is provided with a fan blade (324).

8. The coal mill according to claim 7, wherein: Both ends of the drum (321) are provided with ventilation holes (325).

9. The coal mill according to claim 8, characterized in that: A waste cone barrel (44) is provided on the outer wall of the separation cone barrel (23), the outer wall of the waste cone barrel (44) is connected to the inclined platform (13), and a waste discharge pipe (45) is provided at the bottom of the waste cone barrel (44).

10. The coal mill according to claim 9, characterized in that: A vertical rod (14) is provided on the top of the inclined platform (13), and the top of the vertical rod (14) is connected to the feeding pipe (33).

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