Coal grinding method and screening device therefor

Abstract

This invention relates to the technical field of coal grinding, and more particularly to a coal grinding method and its screening device. The method includes: first, placing coal into a coal mill for grinding; then, using a screening component to screen the coal layer by layer, separating qualified coal from unqualified coal; finally, using the screening component to screen the steel balls during grinding, and further processing the screened steel balls, such as cleaning or replacing them. The method also includes a screening component and functional components. The design of the screening component in the coal mill allows for the automatic screening of steel balls that are no longer efficiently grinding coal powder due to consumption. The functional components, acting within the coal mill, improve the grinding effect, thereby enhancing the efficiency and stability of the coal powder combustion process. The entire screening device can automatically identify steel balls that need to be replaced or discarded, reducing manual operation time and labor costs.

Description

Technical Field

[0001] This invention relates to the technical field of coal grinding, and more particularly to a coal grinding method and a screening device thereof. Background Technology

[0002] Currently, ball mills simply grind coal, resulting in poor grinding efficiency and inconsistent coal powder fineness. This affects the efficiency and stability of the coal combustion process. Furthermore, the diameter of the steel balls used to crush coal decreases over time, reducing the mill's efficiency in crushing coal and impacting boiler heating efficiency. Replacing the steel balls requires pausing the mill, opening the manhole, and manually sorting the worn balls to replace those unusable. This traditional manual sorting method suffers from low efficiency and increases time and labor costs. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the above-mentioned problems of low efficiency, increased time and labor costs of manual sorting of steel balls, and poor grinding effect that affects the efficiency and stability of pulverized coal combustion process, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a method for grinding coal.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution, including the following steps:

[0007] The coal is fed into a coal mill for grinding.

[0008] The steel balls used in the grinding process are screened using a sieving component.

[0009] After screening, the screening component performs layer-by-layer screening on the coal material being ground, separating qualified coal material from unqualified coal material.

[0010] After working for a period of time, the coal is ground and discharged.

[0011] In a preferred embodiment of the coal grinding method of the present invention, the steel balls screened out are cleaned and replaced by the sieving component during the grinding process.

[0012] In a preferred embodiment of the coal grinding method described in this invention, the replaced steel balls are fed into the coal mill through the sieving component for further grinding and discharge.

[0013] A screening device, the aforementioned screening device, comprising,

[0014] The screenable components include a coal mill drum, an observation assembly, and a filter assembly, wherein the observation assembly is disposed on the coal mill drum, and the filter assembly is disposed on the observation assembly; and,

[0015] The functional components include a first processing component, a second processing component, and a cleaning component. The first processing component is disposed on the observation component, the second processing component is disposed on the first processing component, and the cleaning component is disposed on the first processing component.

[0016] In a preferred embodiment of the screening device of the present invention, the observation component includes a manhole frame, a manhole cover, and a push-pull handle. The manhole frame is disposed on the coal mill, the manhole cover is disposed on the manhole frame, and the push-pull handle is disposed on the manhole cover.

[0017] In a preferred embodiment of the screening device of the present invention, the filtering component includes a movable buckle, a closed panel, and a pull-out plate. The movable buckle is disposed on the manhole cover, the closed panel is disposed on the movable buckle, and the pull-out plate is disposed on the manhole cover.

[0018] In a preferred embodiment of the screening device of the present invention, the filtering assembly includes a first grid plate, a first sieve hole, a sealing plate, a second grid plate, and a second sieve hole. The first grid plate is disposed on the manhole frame, the first sieve hole is disposed on the first grid plate, the sealing plate is disposed on the first sieve hole, the second grid plate is disposed on the manhole cover, and the second sieve hole is disposed on the second grid plate.

[0019] In a preferred embodiment of the screening device of the present invention, the first processing component includes a first filter plate, a positioning groove, a positioning block, a cleaning ring column, and a first rotating shaft. The first filter plate is disposed on the coal mill, the positioning groove is disposed on the coal mill, the positioning block is disposed on the positioning groove, the cleaning ring column is disposed on the coal mill, and the first rotating shaft is disposed on the cleaning ring column.

[0020] In a preferred embodiment of the screening device of the present invention, the second processing component includes a drive disk, helical teeth, a toothed column, a first shaped wheel, a first connecting wheel, and helical teeth. The drive disk is disposed on the first rotating shaft, the helical teeth are disposed on the drive disk, the toothed column is disposed on the helical teeth, the first shaped wheel is disposed on the toothed column, the first connecting wheel is disposed on the first shaped wheel, and the helical teeth are disposed on the first connecting wheel.

[0021] The second processing component includes a second irregular wheel, a second connecting wheel, a supplementary wheel, and a support column. The second irregular wheel is disposed on the first irregular wheel, the second connecting wheel is disposed on the second irregular wheel, the supplementary wheel is disposed on the second connecting wheel, and the support column is disposed on the supplementary wheel.

[0022] In a preferred embodiment of the screening device of the present invention, the sweeping component includes a second rotating shaft, and the second rotating wheel is disposed on the first rotating shaft; the second rotating shaft includes an initial groove, a curved groove and a vertical groove, the initial groove is disposed on the second rotating shaft, the curved groove is disposed on the initial groove, and the vertical groove is disposed on the curved groove;

[0023] The sweeping assembly includes a second filter plate, a deceleration spring, a positioning bracket, and a first cleaning plate. The second filter plate is disposed on the second rotating shaft, the deceleration spring is disposed on the second rotating shaft, the positioning bracket is disposed on the second rotating shaft, and the first cleaning plate is disposed on the positioning bracket.

[0024] The cleaning assembly includes a third rotating shaft, a second cleaning plate, and a rotating ring column. The third rotating shaft is disposed on the second rotating shaft, the second cleaning plate is disposed on the positioning bracket, and the rotating ring column is disposed on the third rotating shaft.

[0025] The beneficial effects of this invention are as follows: By adding a screening component to the coal mill during the coal grinding process, steel balls that can no longer efficiently grind coal powder due to consumption can be automatically screened out during the coal grinding process. Furthermore, through the action of functional components inside the coal mill, the grinding effect can be improved during the grinding process, thereby enhancing the efficiency and stability of the coal powder combustion process. The entire screening device can automatically identify steel balls that need to be replaced or discarded, reducing the time and labor costs of manual operation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of a coal grinding method and its screening device according to the present invention.

[0028] Figure 2 This is a schematic diagram of the screenable component of a coal grinding method and screening device according to the present invention.

[0029] Figure 3 This is a schematic diagram of the filter component structure of a coal grinding method and screening device according to the present invention.

[0030] Figure 4 This is a side view of the filter assembly of a coal grinding method and screening device according to the present invention.

[0031] Figure 5 This is a schematic diagram of the functional components of a coal grinding method and its screening device according to the present invention.

[0032] Figure 6 This is a schematic diagram of the second-stage processing component of a coal grinding method and screening device according to the present invention.

[0033] Figure 7 This is a schematic diagram of the cleaning component structure of a coal grinding method and screening device according to the present invention. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "an embodiment" or "embodiment" as used 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 different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0038] Example 1

[0039] As a first embodiment of the present invention, a coal grinding method is provided, comprising the following steps:

[0040] S1. The coal is fed into a coal mill for grinding. The coal mill can be a rotary or vibratory type to achieve uniform grinding of the coal.

[0041] S2. The coal material being ground is screened layer by layer by the screening component M to separate qualified coal material from unqualified coal material. The screening component can be a screen, a vibrating screen or other suitable device, which can effectively screen coal material of different particle size ranges.

[0042] S3. Further use the sieving component M to screen the steel balls during grinding, and then further process the screened steel balls, such as cleaning or replacing them. This ensures the quality and service life of the steel balls.

[0043] S4. The screening component M further filters the steel balls consumed by the coal mill after long-term use, reducing the trouble of manually screening the steel balls, which can improve production efficiency and reduce labor costs.

[0044] S5. The screening component M can be equipped with an automatic screening device to achieve automated production. This can reduce manual operation, improve production efficiency and product quality, and at the same time, reduce the labor intensity and work risks of workers.

[0045] Example 2

[0046] Reference Figures 1-4This is the second embodiment of the present invention, which differs from the first embodiment in that: the screening component M includes a screening component 100, which includes a coal mill 101, an observation component 102, and a filter component 103. The coal mill 101 is driven to rotate by a motor, causing the steel balls inside the coal mill 101 to rotate and fall, colliding with the coal material and crushing it. Over a long period of operation, the coal material becomes coal powder. The observation component 102 is disposed on the coal mill 101 and acts on the coal mill 101, allowing the internal condition of the coal mill 101 to be observed. The filter component 103 is disposed on the observation component 102 and acts on the observation component 102, allowing excess steel balls consumed in the coal mill 101 to be automatically screened through the filter component 103, reducing the time and labor required for manual screening.

[0047] Specifically, the observation component 102 includes a manhole frame 102a, a manhole cover 102b, and a push-pull handle 102c. The manhole frame 102a is mounted on the coal mill 101 and is fixedly connected to it. The manhole frame 102a is mounted on the outside of the manhole, against the outer wall of the coal mill 101. The manhole frame 102a is a structure that is closed on three sides, leaving one side open. The manhole cover 102b is mounted on the manhole frame 102a and is a frame with only two sides, top and bottom. When the manhole cover 102b moves to a position that overlaps with the manhole frame 102a, one side of the manhole frame 102a can be used to fill the manhole. One side of the manhole cover 102b is missing. The manhole cover 102b is movably connected to the manhole frame 102a. The manhole cover 102b covers the manhole frame 102a. The manhole frame 102a and the manhole cover 102b can move and overlap each other, so that the coal mill 101 is not affected. The push-pull handle 102c is set on the manhole cover 102b. The push-pull handle is fixedly connected to the manhole cover 102b. The push-pull handle can move the manhole cover 102b away from the manhole frame 102a. Several bolts are evenly distributed on the manhole cover 102b and the manhole frame 102a to fix the manhole cover 102b and the manhole frame 102a.

[0048] Furthermore, the filter assembly 103 includes a movable buckle 103a, a closed panel 103b, and a pull-out plate 103c. The movable buckle 103a is disposed on the manhole cover 102b and is fixedly connected to the manhole cover 102b. The movable buckle 103a can be adapted to the upper side of the manhole frame 102a. The movable buckle 103a is Z-shaped, and there is a certain space between the movable buckle 103a and the manhole frame 102a, which is just enough for the manhole frame 102a to move in. The closed panel 103b is disposed on the movable buckle 103a, sealing... The closing panel 103b is fixedly connected to the movable buckle 103a. The closing panel 103b can close the other side of the manhole frame 102a that is not closed. It plays a closing role when the manhole cover 102b moves to the position that coincides with the manhole frame 102a. The closing panel 103b also fills in the other side of the missing two sides of the manhole cover 102b. The pull plate 103c is set on the manhole cover 102b and is movably connected to the lower side of the manhole cover 102b. When the pull plate 103c is moved, the object inside the manhole cover 102b will fall and detach from the manhole cover 102b.

[0049] Furthermore, the filter assembly 103 includes a first grid plate 103d, a first screen hole 103e, a sealing plate 103f, a second grid plate 103g, and a second screen hole 103h. The first grid plate 103d is disposed on the manhole frame 102a and is located inside the manhole frame 102a, biased towards the inner wall of the coal mill. The first screen hole 103e is disposed on the first grid plate 103d and is formed by several short and long waist-shaped grooves. The first screen hole 103e is not distributed throughout the entire frame. The entire first screen plate has a manhole in the middle for workers to enter. The short and long waist-shaped grooves on the side of the first screen hole 103e, which are biased towards the manhole cover 102b, are not on the same horizontal plane. The shorter waist-shaped groove is narrower and taller than the longer one. This design allows the steel balls in the shorter groove to fall onto the longer groove after being screened out, preventing workers from being hit. This overall design facilitates the rotation and release of steel balls from the coal mill. The sealing plate 103f is located at the first screen hole. On 103e, the sealing plate 103f is fixedly connected to the first screen hole 103e. The sealing plate 103f is closed on one side near the manhole cover 102b, leaving a certain space near the first screen hole 103e. The sealing plate 103f is open near the long, waist-shaped groove on the first screen hole 103e. This allows the steel balls screened from the short, waist-shaped groove on the first screen hole 103e to fall through the sealing plate 103f into the long, waist-shaped groove at the first screen hole 103e, making it safer. The second grid plate 103g is set on the manhole cover 102b and is fixedly connected to the manhole cover. On 102b, and near the first grid plate, the first and second grid plates are set opposite each other. The second screen hole 103h is set on the second grid plate 103g. The second screen hole 103h is opened on the second grid plate 103g, and the second screen hole 103h is evenly distributed on the lower side of the second grid plate 103g. The second screen hole 103h penetrates the lower side of the second grid plate 103g. This makes it easy for the steel balls to be screened out and moved to the manhole cover 102b. Then, the pull plate 103c is moved so that the steel balls in the manhole cover 102b can fall directly. This also makes it easy to collect the consumed steel balls.

[0050] During operation, when the coal mill is rotating, excessively consumed steel balls can exit through the first screen hole 103e on the first grate. The sealing plate 103f on the first screen hole 103e allows the steel balls to safely move to the second grate and enter the manhole cover 102b. By using the push-pull handle to move the manhole cover 102b away from the manhole frame 102a, and further moving the pull plate 103c, the steel balls can be released, completing the screening of the steel balls. In this way, steel balls that have been consumed and can no longer efficiently grind coal powder are automatically screened out, reducing the time and labor costs of manual operation.

[0051] Example 3

[0052] Reference Figures 1-7 This is the third embodiment of the present invention, which differs from the second embodiment in that: the screening component M includes a functional component 200, which includes a first-stage processing component 201, a second-stage processing component 202, and a sweeping component 203. The first-stage processing component 201 is disposed on the observation component 102, the second-stage processing component 202 is disposed on the first-stage processing component 201, and the sweeping component 203 is disposed on the first-stage processing component 201. The first-stage processing component 201 is disposed on the coal mill 101, and the first-stage processing component 201 acts on the coal mill 101. Through the action of the first-stage processing component 201 on the coal mill 101, the coal mill 101 is able to transport coal to the first-stage processing... Further processing of coal can be carried out on component 201. The second-stage processing component 202 is set on the first-stage processing component 201. The second-stage processing component 202 acts on the first-stage processing component 201, which can improve the crushing effect of coal in the first-stage processing component 201 and crush coal faster. The cleaning component 203 is set on the second-stage processing component 202. The cleaning component 203 acts on the second-stage processing component 202, which can clean the coal powder attached to the inner wall of the coal mill 101, reducing the trouble of manual cleaning.

[0053] Specifically, the first processing component 201 includes a first filter plate 201a, a positioning groove 201b, and a positioning block 201c. The first filter plate 201a is mounted on the coal mill 101 and is movably connected to the coal mill 101. The rotation of the coal mill 101 does not cause the first filter plate 201a to rotate. The first filter plate 201a consists of several through holes of a certain diameter, and these through holes are distributed throughout the first filter plate 201a. The diameter of the through holes on the first filter plate 201a is smaller than the diameter of the steel ball placed between the feed inlet and the first filter plate 201a. This ensures that when the steel ball rotates and falls to strike the coal, it reduces the size of the coal. Only when the coal is struck to a size smaller than the through holes on the first filter plate 201a can it pass through the first filter plate 201a for further processing. The positioning groove 201b is located on the coal mill 101. 1. The positioning groove 201b is formed on the coal mill 101, corresponding to the position of the first filter plate 201a, so that the coal mill 101 has a groove of a certain width. The positioning groove 201b is circular and surrounds the first filter plate 201a. The positioning block 201c is set on the positioning groove 201b. One side of the positioning block 201c is movably connected to the positioning groove 201b and is embedded in the positioning groove 201b, so that it will not fall out of the positioning groove 201b. The other side of the positioning block 201c is fixedly connected to the first filter plate 201a. By fixing one side of the positioning block 201c to the first filter plate 201a and movably connecting the other side of the positioning block 201c to the positioning groove 201b, the first filter plate 201a can be fixed in the coal mill 101 and the rotation of the coal mill 101 will not affect the first filter plate 201a.

[0054] The first processing component 201 includes a cleaning ring column 201d and a first rotating shaft 201e. The cleaning ring column 201d is disposed on the coal mill 101 and is fixedly connected to the coal mill 101. The cleaning ring column 201d consists of a circular ring with a through hole of a certain diameter in the middle and four columns evenly distributed on the circular ring. The four columns are fixedly connected to the inner wall of the coal mill 101. The rotation of the coal mill can drive the cleaning ring column 201d to rotate. The cleaning ring column 201d is located close to the first filter plate 201a, and one side of the cleaning ring column 201d is in contact with the surface of the first filter plate 201a. When the cleaning ring column 201d... The rotation of 01d can clean the coal material attached to the first filter plate 201a. This can either allow the coal material to pass through the first filter plate 201a or remove it and continue to be struck by the steel ball until it can pass through the first filter plate 201a. The first rotating shaft 201e is set on the cleaning ring column 201d and is fixedly connected to the cleaning ring column 201d. The first rotating shaft 201e passes through the first filter plate 201a, which is equivalent to the first rotating shaft 201e being sleeved on the first filter plate 201a. The rotation of the cleaning ring column 201d can drive the first rotating shaft 201e to rotate without affecting the state of the first filter plate 201a.

[0055] Furthermore, the second processing component 202 includes a drive disk 202a, helical teeth 202b, toothed columns 202c, and a first irregularly shaped wheel 202d. The drive disk 202a is mounted on the first rotating shaft 201e and is fixedly connected to the first rotating shaft 201e, and is fixedly connected to the side near the feed inlet. The helical teeth 202b are mounted on the drive disk 202a and are fixedly connected to the drive disk 202a, and the helical teeth 202b have teeth with a certain inclination angle. Helical teeth 202b are evenly wrapped around the drive disk 202a. Gear spurs 202c are disposed on the helical teeth 202b and mesh with them. There are several gear spurs 202c, and each gear spur 202c is cylindrical. When the drive disk 202a is driven by the first rotating shaft 201e, the helical teeth 202b rotate, and under the meshing action with the gear spurs 202c, the gear spurs 202c also rotate. A first irregularly shaped wheel 202d is disposed on the gear spurs 202b. On c, the first irregularly shaped wheel 202d is fixedly connected to the toothed column 202c. The first irregularly shaped wheel 202d is composed of a nearly three-quarters circular arc plate and an inclined straight plate. This allows the coal and steel balls inside the coal mill 101 to rotate and fall into the nearly three-quarters circular arc plate through the inclined straight plate on the first irregularly shaped wheel 202d, thus impacting the coal. This adds another function besides allowing all the coal and steel balls to rotate together within the empty coal mill 101. If the coal is struck in a way that only involves the coal mill rotating together inside the mill cylinder 101, the high-speed rotation inside the mill cylinder 101 will cause all objects to move towards the inner wall of one side of the mill and fall after reaching the highest point. The friction and impact force between the steel ball and the coal will turn large pieces of coal into coal powder. This method is too simplistic, and the effect of turning coal into coal powder due to inertia is not good. By having part of the coal and steel ball pass through the first shaped wheel 202d to increase the friction and impact force, the effect of producing coal powder can be improved.

[0056] Furthermore, the second processing component 202 includes a first connecting wheel 202e and a beveled tooth 202f. The first connecting wheel 202e is disposed on the first irregularly shaped wheel 202d and is fixedly connected to the first irregularly shaped wheel 202d, and is close to the first filter plate 201a. There is a height difference between the first connecting wheel 202e and the first irregularly shaped wheel 202d; otherwise, it would affect the entry and exit of coal and steel balls from the first irregularly shaped wheel 202d. Since the first irregularly shaped wheel 202d needs to be driven by the drive disc 202a, the connection between the first connecting wheel 202e and the first irregularly shaped wheel 202d can be spliced ​​into a ring of different heights. Therefore, the toothed column 202c is fixedly connected to the first connecting wheel 202e and the first irregular wheel 202d with different height differences. This allows the toothed column 202c and the helical teeth 202b on the drive disk 202a to mesh continuously. The orientation of the toothed column 202c is biased towards the feed inlet. The helical teeth 202f are set on the first connecting wheel 202e. There are several helical teeth 202f, and they are evenly distributed on the first connecting wheel 202e and the first irregular wheel 202d. The helical teeth 202f are set on the sides of the first connecting wheel 202e and the first irregular wheel 202d, and are parallel to each other with the toothed column 202c.

[0057] Furthermore, the second processing component 202 includes a second irregularly shaped wheel 202g, a second connecting wheel 202h, a supplementary wheel 202i, and a support column 202j. The second irregularly shaped wheel 202g is disposed on the first irregularly shaped wheel 202d, and is located on one side of the first irregularly shaped wheel 202d. The second irregularly shaped wheel 202g and the first irregularly shaped wheel 202d have the same shape and are symmetrically arranged. The second irregularly shaped wheel 202g also has the same inclined teeth 202f as the first irregularly shaped wheel 202d, so that the inclined teeth 202f on the first irregularly shaped wheel 202d can mesh with the inclined teeth 202f on the second irregularly shaped wheel 202g. When the first irregularly shaped wheel 202d is driven by the disc... When the 202a rotating ring rotates, the position of the inclined gear 202f and the second shaped wheel 202g can cause the second shaped wheel 202g to rotate in the opposite direction to the first shaped wheel 202d. This allows the coal and steel balls to enter the first shaped wheel 202d and the second shaped wheel 202g, which rotate at different speeds. However, due to the symmetrical arrangement, although the coal and steel balls enter different shaped wheels, their falling direction is close to the middle of the coal mill 101. This creates a bidirectional falling coal and steel ball, which further increases the friction and impact force of the coal and steel balls. The second connecting wheel 202h is set on the second shaped wheel 202g. The second connecting wheel 202h is connected to the first shaped wheel 202d. The first connecting wheel 202e is positioned identically to the second irregular wheel 202g, connecting to the empty space there. The second connecting wheel 202h and the second irregular wheel 202g form the same height difference as the first connecting wheel 202e and the first irregular wheel 202d. This ensures that the rotation of the first connecting wheel 202e and the first irregular wheel 202d does not affect the rotation of the second connecting wheel 202h and the second irregular wheel 202g. The supplementary wheel 202i is mounted on the second connecting wheel 202h and is fixedly connected to it. The supplementary wheel 202i is a semi-circular plate with a certain curvature. Both sides of the supplementary wheel 202i are fixedly connected to the two sides of the second connecting wheel 202h. Similarly, the supplementary wheel 202i... Also arranged in the same way on the first connecting wheel 202e, the supplementary wheel 202i is connected to the first connecting wheel 202e and the second connecting wheel 202h respectively to form two identical rings. The support column 202j is set on the supplementary wheel 202i. There are four support columns 202j, two on one supplementary wheel 202i. The supplementary wheel 202i is connected to the first connecting wheel 202e and the second connecting wheel 202h respectively to form two identical rings. There is a groove of a certain depth near the cleaning ring column. This groove allows the support column 202j to move and be embedded in it, and also plays a role in fixing and supporting, helping the first irregular wheel 202d and the second irregular wheel 202g to complete their corresponding functions.

[0058] Specifically, the cleaning component 203 includes a second rotating shaft 203a, a second rotating wheel is disposed on the first rotating shaft 201e, the second rotating shaft 203a is fixedly connected to the first rotating shaft 201e, and the rotation of the first rotating shaft 201e can drive the rotation of the second rotating shaft 203a;

[0059] The second rotating shaft 203a includes an initial groove 203a-1, a curved groove 203a-2, and a vertical groove 203a-3. The initial groove 203a-1 is located on the second rotating shaft 203a and is close to the first filter plate 201a. The initial groove 203a-1 has the shortest length but the greatest curvature, which facilitates the slow movement of objects on it. The curved groove 203a-2 is located on the initial... On slot 203a-1, curved slot 203a-2 is connected to initial slot 203a-1, and the length of curved slot 203a-2 is longer than that of initial slot 203a-1, but the degree of curvature is less than that of initial slot 203a-1. An object moving in curved slot 203a-2 can move faster than in initial slot 203a-1. Furthermore, the second rotating shaft 203a is formed by the alternating connection of two initial slots 203a-1 and two curved slots 203a-2. Each initial slot 203a... The depth and width of the groove between the initial groove 203a-1 and the curved groove 203a-2 are the same, which facilitates the movement of the object between the initial groove 203a-1 and the curved groove 203a-2. The vertical groove 203a-3 is set on the curved groove 203a-2, and its two ends connect to the last curved groove 203a-2 and the first initial groove 203a-1, respectively. The vertical groove 203a-3 is the longest and has the smallest degree of curvature, less than that of the curved groove 203a-2. The vertical groove 203a-3 is nearly vertical, which allows the object to move to the other side of the vertical groove 203a-3 after moving to the last curved groove 203a-2 and entering the other side of the vertical groove 203a-3 at a faster speed than the object moving in the curved groove 203a-2. Under the rotation of the second rotating shaft 203a, it enters the first initial groove 203a-1, causing the object to repeat the above-mentioned motion trajectory. In this way, the object can reciprocate under the rotation of the second rotating shaft 203a.

[0060] Furthermore, the cleaning assembly 203 includes a second filter plate 203b, a deceleration spring 203c, a positioning bracket 203d, and a first cleaning plate 203e. The second filter plate 203b is disposed on the second rotating shaft 203a and sleeved on the second rotating shaft 203a. The second filter plate 203b is located on one side of the second rotating shaft 203a away from the first filter plate 201a. The second filter plate 203b has several holes smaller than the through holes of the first filter plate 201a. This is to screen the coal material that has been reduced in size by the impact of the steel balls between the first filter plate 201a and the second filter plate 203b. The steel balls between the first filter plate 201a and the second filter plate 203b are smaller than the feed inlet and the first filter plate. The steel balls in the second stage of the filter plate 201a are smaller than those in the first stage because the coal material is smaller after the first stage of processing. Neither the first nor the second steel ball can pass through the first filter plate 201a or the second filter plate 203b of the first and second stages of processing, respectively. A deceleration spring 203c is mounted on the second rotating shaft 203a and is sleeved on it. One side of the deceleration spring 203c is fixedly connected to the first filter plate 201a. A positioning bracket 203d is mounted on the second rotating shaft 203a, and a movable column is provided inside the positioning bracket 203d. The movable column is movably connected to the second rotating shaft 203a. On the second rotating shaft 203a, the movable column can move within the initial groove 203a-1, bending groove 203a-2, and vertical groove 203a-3. The positioning bracket 203d is fixedly connected to the movable column. The movement of the movable column within the initial groove 203a-1, bending groove 203a-2, and vertical groove 203a-3 on the second rotating shaft 203a drives the positioning bracket 203d to move. The positioning bracket 203d consists of a ring and several columns respectively arranged on the ring. The other side of the deceleration spring 203c is a ring fixedly connected to the positioning bracket 203d. Thus, when the movable column drives the positioning bracket 203d to move, the deceleration spring 203c will compress. The release mechanism also allows the auxiliary positioning bracket 203d to move following the shapes of the initial groove 203a-1, the curved groove 203a-2, and the vertical groove 203a-3. The first cleaning plate 203e is mounted on the positioning bracket 203d and is fixedly connected to a column on the ring mounted on the positioning bracket 203d. The first cleaning plate 203e is a ring shape composed of several uniform, wave-like patterns that can fit against the inner wall of the coal mill 101. The movement of the moving column inside the positioning bracket 203d causes the positioning bracket 203d to move, which in turn causes the first cleaning plate 203e to move. This allows the first cleaning plate 203e to clean the coal or coal powder adhering to the inner wall of the coal mill 101.This avoids the unnecessary trouble and time costs associated with manual cleaning.

[0061] Furthermore, the cleaning component 203 includes a third rotating shaft 203f, a second cleaning plate 203g, and a rotating ring column 203h. The third rotating shaft 203f is mounted on the second rotating shaft 203a and is fixedly connected to the second rotating shaft 203a. The third rotating shaft 203f and the second rotating shaft 203a have the same shape and also have an initial groove 203a-1, a curved groove 203a-2, and a vertical groove 203a-3. The third rotating shaft 203f and the second rotating shaft 203a are symmetrically arranged, so that the movement of the object on the third rotating shaft 203f and the second rotating shaft 203a is not synchronous. The second cleaning plate 203g is mounted on a positioning bracket 203d and is fixedly connected to the positioning bracket 203d. There are two positioning brackets 203d, one mounted on the second cleaning plate 203g and the other on the first cleaning plate 203e. The second cleaning plate 203g and the first cleaning plate 203e have the same shape and function. Since the first cleaning plate 203e and the second cleaning plate 203g move asynchronously on the second rotating shaft 203a and the third rotating shaft 203f respectively, this facilitates the movement of the object cleaned by the first cleaning plate 203e through the second filter plate 203b without being affected by the second cleaning plate 203g. The rotating ring column 203h is set on the third rotating shaft 203f and is movably connected to the third rotating shaft 203f. The rotating ring column 203h is set at a position on the third rotating shaft 203f that is biased towards the discharge port. The rotating ring column 203h ensures that the rotation and movement of the third rotating shaft 203f will not affect the state of the rotating ring column 203h. The two cubes set on the rotating ring column 203h are fixedly connected to the discharge port, which serves to support the movement of the third rotating shaft 203f.

[0062] The remaining structure is the same as that in Example 2.

[0063] Operating steps: When coal enters the mill 101 through the feed inlet and drive shaft, it needs to be crushed by steel balls of a certain diameter between the feed inlet and the first filter plate 201a before passing through the first filter plate 201a. This crushing process allows the coal to pass through the first filter plate 201a, achieving the first stage of processing. Then, the first rotating shaft 201e drives the drive disc 202a to rotate, causing the first shaped wheel 202d to rotate. Under the action of the inclined gear 202f, the second shaped wheel 202g rotates in the opposite direction. Simultaneously, the support column 202j supports the rotation of both the first shaped wheel 202d and the second shaped wheel 202g. The opposite rotation of the first shaped wheel 202d and the second shaped wheel 202g... The movement causes some coal and steel balls to increase friction and impact force through the rotation of the first shaped wheel 202d and the second shaped wheel 202g, respectively, achieving the second stage of processing. Then, through the rotation of the second rotating shaft 203a and the third rotating shaft 203f, the first cleaning plate 203e and the second cleaning plate 203g move in opposite directions to clean the inner wall of the coal mill, achieving the function of automatic cleaning. The screening component 100 can be matched with the functional components 200 in a segmented and appropriate number. Through the automatic cleaning and automatic screening functions, maintenance costs and maintenance cycles can be reduced, the reliability and life of the equipment can be improved, and unnecessary trouble and time costs caused by manual cleaning can be avoided. At the same time, the cleaning effect can be more thorough and reliable.

[0064] 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 it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A screening device, characterized in that: include, The screenable component (100) includes a coal mill (101), an observation component (102), and a filter component (103), wherein the observation component (102) is disposed on the coal mill (101), and the filter component (103) is disposed on the observation component (102); The filter assembly (103) includes a first grid plate (103d), a first sieve hole (103e), a second grid plate (103g), and a second sieve hole (103h). The first grid plate (103d) is disposed on the manhole frame (102a), the first sieve hole (103e) is disposed on the first grid plate (103d), the second grid plate (103g) is disposed on the manhole cover (102b), and the second sieve hole (103h) is disposed on the second grid plate (103g). The first screen hole (103e) is composed of several short waist-shaped grooves and long waist-shaped grooves. The short waist-shaped grooves and long waist-shaped grooves on the side of the first screen hole (103e) that are biased towards the manhole cover (102b) are not on the same horizontal plane. The width of the short waist-shaped groove is shorter than the width of the long waist-shaped groove, and the height of the short waist-shaped groove is higher than the height of the long waist-shaped groove. This is to facilitate the steel balls in the short waist-shaped groove to fall onto the position of the long waist-shaped groove when they are screened out, so that the steel balls in the coal mill can rotate and get out. In this design, the first grid plate (103d) and the second grid plate (103g) are arranged opposite to each other; the second sieve holes (103h) are evenly distributed on the lower side of the second grid plate (103g), and the second sieve holes (103h) penetrate the lower side of the second grid plate (103g). This facilitates the screening of steel balls, which are then moved to the manhole cover (102b). Moving the pull plate (103c) allows the steel balls inside the manhole cover (102b) to fall directly, thus facilitating the collection of consumed steel balls. The functional component (200) includes a first processing component (201), a second processing component (202), and a cleaning component (203). The first processing component (201) is disposed on the observation component (102), the second processing component (202) is disposed on the first processing component (201), and the cleaning component (203) is disposed on the first processing component (201). The first processing component (201) includes a first filter plate (201a), a positioning groove (201b), a positioning block (201c), a cleaning ring column (201d), and a first rotating shaft (201e). The first filter plate (201a) is disposed on the coal mill (101), the positioning groove (201b) is disposed on the coal mill (101), the positioning block (201c) is disposed on the positioning groove (201b), the cleaning ring column (201d) is disposed on the coal mill (101), and the first rotating shaft (201e) is disposed on the cleaning ring column (201d). The second processing component (202) includes a drive disk (202a), helical teeth (202b), a toothed column (202c), a first irregular wheel (202d), a first connecting wheel (202e), and a helical tooth (202f). The drive disk (202a) is disposed on the first rotating shaft (201e), the helical teeth (202b) are disposed on the drive disk (202a), the toothed column (202c) is disposed on the helical teeth (202b), the first irregular wheel (202d) is disposed on the toothed column (202c), the first connecting wheel (202e) is disposed on the first irregular wheel (202d), and the helical tooth (202f) is disposed on the first connecting wheel (202e). The second processing component (202) further includes a second irregular wheel (202g), a second connecting wheel (202h), a supplementary wheel (202i), and a support column (202j). The second irregular wheel (202g) is disposed on the first irregular wheel (202d), the second connecting wheel (202h) is disposed on the second irregular wheel (202g), the supplementary wheel (202i) is disposed on the second connecting wheel (202h), and the support column (202j) is disposed on the supplementary wheel (202i).

2. The screening device according to claim 1, characterized in that: The observation assembly (102) includes a manhole frame (102a), a manhole cover (102b), and a push-pull handle (102c). The manhole frame (102a) is disposed on the coal mill (101), the manhole cover (102b) is disposed on the manhole frame (102a), and the push-pull handle (102c) is disposed on the manhole cover (102b).

3. The screening device according to claim 2, characterized in that: The filter assembly (103) includes a movable buckle (103a), a closed panel (103b), and a pull-out plate (103c). The movable buckle (103a) is disposed on the manhole cover (102b), the closed panel (103b) is disposed on the movable buckle (103a), and the pull-out plate (103c) is disposed on the manhole cover (102b).

4. The screening device according to claim 3, characterized in that: The filter assembly (103) includes a sealing plate (103f) disposed on the first sieve hole (103e).

5. A screening device according to claim 4, characterized in that: The sweeping component (203) includes a second rotating shaft (203a), which is disposed on the first rotating shaft (201e). The second rotating shaft (203a) includes an initial groove (203a-1), a curved groove (203a-2), and a vertical groove (203a-3). The initial groove (203a-1) is disposed on the second rotating shaft (203a), the curved groove (203a-2) is disposed on the initial groove (203a-1), and the vertical groove (203a-3) is disposed on the curved groove (203a-2). The cleaning assembly (203) includes a second filter plate (203b), a deceleration spring (203c), a positioning bracket (203d), and a first cleaning plate (203e). The second filter plate (203b) is disposed on the second rotating shaft (203a), the deceleration spring (203c) is disposed on the second rotating shaft (203a), the positioning bracket (203d) is disposed on the second rotating shaft (203a), and the first cleaning plate (203e) is disposed on the positioning bracket (203d). The cleaning assembly (203) includes a third rotating shaft (203f), a second cleaning plate (203g), and a rotating ring column (203h). The third rotating shaft (203f) is disposed on the second rotating shaft (203a), the second cleaning plate (203g) is disposed on the positioning bracket (203d), and the rotating ring column (203h) is disposed on the third rotating shaft (203f).

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