Coal mill feeding device

Abstract

A coal mill feeding device comprises: a screening assembly comprising a box, a feeding port formed at the top of the box, a discharge port formed at the bottom of the box, a screen plate and a receiving plate both arranged inside the box, and a plurality of screen holes provided in the screen plate; a drive assembly; and a feeding assembly. To ensure the uniformity of pulverized coal, the screening assembly is provided to perform coarse and fine screening on mixed coal briquettes, which enables batch feeding of the coal briquettes into the coal mill for grinding, thereby facilitating subsequent control of the grinding roller pressure and grinding duration based on the specific conditions of the coal briquettes. When an electric motor is activated, the screen plate performs screening while a barrier plate is lifted to effectively prevent the coal briquettes from splashing. After the screening is completed, a first air cylinder can be activated to drive a first push shovel to push the coarse coal for grinding, and at this point, the barrier plate is lowered to facilitate a material guide plate conveying the coal briquettes. After the grinding of the coarse coal is completed, a second air cylinder is activated to drive a second push shovel to push the fine coal for grinding.

Description

Coal mill feeding device Technical Field

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

[0002] A coal mill is a commonly used device used to grind coal blocks into the required coal powder to meet the needs of industrial production. The grinding roller is one of the important components of the coal mill. It applies pressure and shear force to the coal blocks to crush and grind them into coal powder. The grinding roller needs to adjust the pressure or grinding time according to the different coarseness of the coal blocks. However, this adjustment process is complicated to operate, which reduces production efficiency. In addition, coal blocks of different coarsenesses enter the coal mill together, and the grinding roller cannot be accurately adjusted for each type of coal block, which can easily lead to uneven particle size of the coal powder and affect product quality. Coal blocks of different coarsenesses may also require the grinding roller to apply greater pressure or extend the grinding time, which will increase energy consumption, reduce energy utilization efficiency, and more likely cause the grinding roller to be subjected to additional impact and wear, shortening the service life of the equipment and increasing maintenance costs.

[0003] Therefore, in order to ensure the consistency of coal powder and avoid rework, it is necessary to screen the coal in advance and feed it into the pulverizer in batches. During this process, the mixed coal blocks need to improve the screening efficiency, and it is also necessary to prevent the coal blocks from splashing everywhere. After the screening work is completed, the coal blocks are sent into the pulverizer and ground by grinding rollers. Based on the above technical problems, we proposed a pulverizer feeding device.

[0004] Summary of the Invention

[0005] In view of the above existing technical problems, the present invention is proposed.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a coal mill feeding device, comprising: a screening assembly, including a box body, a feed port arranged above the box body, a discharge port arranged below the box body, a sieve plate and a receiving plate respectively arranged inside the box body, and a plurality of sieve holes arranged on the sieve plate; a driving assembly, including a groove passing through the top of the box body, two vibrating rods arranged above the sieve plate, a connecting rod arranged between the two vibrating rods, a motor arranged outside the box body, a fixing frame arranged on the outer wall of the motor, a rotating shaft arranged at the output end of the motor, a cam arranged on the outer wall of the rotating shaft, a rotating column arranged on the outer wall of the cam, and an operating rod movably arranged between the connecting rod and the rotating column; a feeding assembly, including two accommodating cavities arranged on the inner wall of the box body, a first shovel and a second shovel respectively arranged inside the two accommodating cavities, and a first cylinder and a second cylinder respectively arranged outside the box body.

[0007] As a preferred solution of the coal mill feeding device of the present invention, the groove and the vibration rod are movably matched, the inner wall of the box body is respectively provided with a slide groove, a movable channel and a guide groove, the outer wall of the screen plate is provided with a slide plate, and the slide plate is movably matched with the slide groove.

[0008] As a preferred solution of the coal mill feeding device of the present invention, two placement plates are provided under the screen plate and the receiving plate, the placement plates are fixedly connected to the inner wall of the box, and the outer wall of the placement plate away from the first cylinder is provided with a supporting plate, the outer wall of the supporting plate is provided with a movable groove, a baffle is movably provided inside the movable groove, and the outer wall of the baffle is provided with a guide plate.

[0009] As a preferred solution of the coal mill feeding device of the present invention, a movable rod is provided on the outer wall of the vibration rod, and the movable rod is movably matched with the movable channel, and movable rods are provided on both sides of the baffle.

[0010] As a preferred solution of the coal mill feeding device of the present invention, the movable rod is movably matched with the guide groove, a movable block is provided on the outer wall of the movable rod, and the movable block is movably matched with the movable rod.

[0011] As a preferred solution of the coal mill feeding device of the present invention, wherein: a clamping block is provided on the outer wall of the moving rod, and a first inclined surface is provided on the outer wall of the clamping block.

[0012] As a preferred solution of the coal mill feeding device of the present invention, the inner wall of the box body is provided with a rotating rod, one end of the rotating rod is provided with a locking block, the other end of the rotating rod is provided with a handle, the outer wall of the locking block is provided with a second inclined surface, and the second inclined surface and the first inclined surface are movably matched.

[0013] As a preferred solution of the coal mill feeding device of the present invention, wherein: support frames are provided under the first cylinder and the second cylinder, the output end of the first cylinder is fixedly connected to the first dozing shovel, the output end of the second cylinder is fixedly connected to the second dozing shovel, and a rotating drum is provided inside the box.

[0014] As a preferred solution of the coal mill feeding device of the present invention, the outer wall of the rotating drum is provided with a matching groove, the outer wall of the first push shovel is provided with a connecting plate, the outer wall of the connecting plate is provided with a matching column, the matching column and the matching groove are movably matched, and the outer wall of the rotating drum is provided with a support block.

[0015] As a preferred solution of the coal mill feeding device of the present invention, the support block is connected to the box body, a turntable is provided at one end of the rotating drum, a shift rod is provided on the outer wall of the turntable, and the shift rod and the handle are movably matched.

[0016] The beneficial effects of the present invention are as follows: the coal blocks to be ground are fed in from the feed port, and the coal blocks fall onto the screen plate. By starting the motor, the vibrating rod further drives the screen plate to vibrate up and down, so that the mixed coal blocks can be efficiently screened, and the finer coal blocks fall from the screen holes onto the receiving plate, and when the vibrating rod moves, the moving rod further drives the baffle plate to move up, thereby preventing the coal blocks from splashing during the screening process and affecting the screening effect. After the screening work is completed, the motor is stopped, and the first cylinder is started to make the first push shovel push the coarser coal blocks out of the discharge port for grinding. At the same time, the movement of the first push shovel drives the guide plate to move downward, which is convenient for guiding. After grinding the coarser coal blocks, the second cylinder can be started again to grind the finer coal blocks. This setting can ensure the consistency of the coal powder and facilitate the control of the pressure of the grinding roller and the grinding time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] FIG1 is a schematic diagram of the overall structure of the screening assembly in the present invention.

[0019] FIG2 is an enlarged schematic diagram of the structure of portion “A” in FIG1 of the present invention, that is, a schematic diagram of the connection structure of the drive assembly.

[0020] FIG3 is a schematic diagram of the connection structure between the first cylinder and the second cylinder in the present invention.

[0021] FIG4 is a schematic diagram of the active channel connection structure in the present invention.

[0022] FIG5 is a cross-sectional view of the connecting structure of the guide plate in the present invention.

[0023] FIG6 is a schematic diagram of the movable rod connection structure in the present invention.

[0024] FIG. 7 is a schematic diagram of the connecting structure of the movable rod in the present invention.

[0025] FIG8 is a schematic diagram of the guide groove connection structure in the present invention.

[0026] FIG9 is an enlarged schematic diagram of the structure of portion “B” in FIG8 , ie, a schematic diagram of the locking block connection structure of the present invention.

[0027] FIG10 is a schematic diagram of the connection structure of the feeding assembly in the present invention.

[0028] In the figure: 100, screening assembly; 101, box; 101a, feed port; 101b, discharge port; 102, sieve plate; 103, receiving plate; 102a, sieve hole; 200, driving assembly; 201, groove; 202, vibration rod; 202a, connecting rod; 203, motor; 203b, fixing frame; 203a, rotating shaft; 204, cam; 204a, rotating column; 204a-1, operating rod; 300, feeding assembly; 301, accommodating chamber; 302, first push shovel; 303, second push shovel; 304, first cylinder; 305, second cylinder; 101c, chute; 101d, movable Movable channel; 101e, guide groove; 102b, slide plate; 104, placement plate; 105, support plate; 105a, movable groove; 106a, baffle; 106, guide plate; 202b, movable rod; 205, moving rod; 205a, moving block; 205b, blocking block; 205b-1, first inclined plane; 206, rotating rod; 206a, locking block; 206b, handle; 206a-1, second inclined plane; 304a, support frame; 306, rotating drum; 306a, matching groove; 302a, connecting plate; 302a-1, matching column; 306b, support block; 307, turntable; 307a, shifting rod. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Example 1, referring to Figures 1 to 5, is the first embodiment of the present invention. This embodiment provides a coal mill feeding device. By setting a screening component 100, coal blocks are fed from the feed port 101a, and coal blocks of different coarseness and fineness fall onto the screen plate 102. The motor 203 is started to make the vibration rod 202 drive the screen plate 102 to vibrate up and down, thereby improving the screening efficiency. The finer coal blocks fall onto the receiving plate 103, thereby completing the screening work of coal blocks of different coarseness and fineness, and further realizing the batch grinding of coal blocks.

[0033] Specifically, the screening assembly 100 includes a box body 101, a feed port 101a provided above the box body 101, a discharge port 101b provided below the box body 101, a sieve plate 102 and a receiving plate 103 provided inside the box body 101, and a plurality of sieve holes 102a provided on the sieve plate 102; the driving assembly 200 includes a groove 201 provided above the box body 101, two vibrating Rod 202, a connecting rod 202a disposed between the two vibrating rods 202, a motor 203 disposed outside the housing 101, a fixing bracket 203b disposed on the outer wall of the motor 203, a rotating shaft 203a disposed at the output end of the motor 203, a cam 204 disposed on the outer wall of the rotating shaft 203a, a rotating post 204a disposed on the outer wall of the cam 204, and an operating rod 204a-1 movably disposed between the connecting rod 202a and the rotating post 204a;

[0034] The feeding assembly 300 includes two accommodating cavities 301 provided on the inner wall of the box body 101 , a first push shovel 302 and a second push shovel 303 provided inside the two accommodating cavities 301 , respectively, and a first cylinder 304 and a second cylinder 305 provided outside the box body 101 , respectively.

[0035] The feed port 101a and the discharge port 101b are staggered, that is, the feed port 101a and the discharge port 101b are not on a vertical line; the discharge port 101b is connected to the coal drop pipe on the coal mill, and the coal blocks coming out of the discharge port 101b enter the coal mill through the coal drop pipe, so that the grinding rollers perform grinding work; the screen plate 102 and the receiving plate 103 are arranged in parallel; the screen holes 102a are set to an appropriate size, so that finer coal blocks can pass through the screen holes 102a and fall onto the receiving plate 103, while coarser coal blocks remain on the screen plate 102; the groove 20 Preferably, two are symmetrically provided to limit the movement direction of the vibrating rod 202; the fixing frame 203b is fixedly connected to the box body 101 at the bottom, and the fixing frame 203b is used to fix and install the electric motor 203; the rotating column 204a is eccentrically connected to the cam 204; one end of the operating rod 204a-1 is movably engaged with the connecting rod 202a, and the other end is movably engaged with the rotating column 204a; when the screen plate 102 is driven by the vibrating rod 202 to screen coal blocks, the first push shovel 302 and the second push shovel 303 are respectively located in the two accommodating chambers 301 and are not affected.

[0036] Preferably, the groove 201 and the vibration rod 202 are movably matched, the inner wall of the box body 101 is respectively provided with a slide groove 101c, a movable channel 101d and a guide groove 101e, and the outer wall of the screen plate 102 is provided with a slide plate 102b, and the slide plate 102b is movably matched with the slide groove 101c.

[0037] Preferably, two placement plates 104 are provided under the screen plate 102 and the receiving plate 103. The placement plates 104 are fixedly connected to the inner wall of the box body 101, and a support plate 105 is provided on the outer wall of the placement plate 104 away from the side of the first cylinder 304. A movable groove 105a is provided on the outer wall of the support plate 105. A baffle 106a is movably provided inside the movable groove 105a, and a material guide plate 106 is provided on the outer wall of the baffle 106.

[0038] Among them, the movable channel 101d is set between the slide 101c and the guide groove 101e; two slide plates 101c are symmetrically provided to limit the displacement direction of the screen plate 102; the placement plate 104 is used to place the screen plate 102 and the receiving plate 103; the guide plate 106 is set with a certain slope to facilitate the discharge of the screened coal blocks from the discharge port 101b; in the initial state, as shown in Figure 5, the screen plate 102 and the receiving plate 103 are aligned with the top of the corresponding baffle 106a. After starting the motor 203, the vibrating rod 202 drives the screen plate 102 within a certain range. The sieve plate 102 vibrates up and down within the enclosure, and returns to its initial position when it moves to the lowest position, as shown in FIG2 . After the motor 203 is started, the rotating shaft 203a rotates, thereby rotating the cam 204, and further operating the rod 204a-1 to drive the connecting rod 202a to move up and down, so that the vibrating rod 202 drives the sieve plate 102 to move, and then the coal blocks falling from the feed port 101a onto the sieve plate 102 can be efficiently screened, so that the coarser coal blocks remain on the sieve plate 102, while the finer coal blocks fall onto the receiving plate 103, which is convenient for subsequent classification and grinding.

[0039] In summary, in order to ensure the consistency of coal powder and avoid the mixed coal blocks entering the coal mill and being unable to accurately adjust the pressure of the grinding roller and the grinding time, thereby affecting the product quality, the mixed coal blocks are fed from the feed port 101a to the screen plate 102, and the motor 203 is started to make the vibrating rod 202 drive the screen plate 102 to complete the screening work. The finer coal blocks can fall from the screen hole 102a to the receiving plate 103. The classified coal blocks can enter the coal mill in batches for grinding, so as to more accurately control the grinding time and the pressure of the grinding roller.

[0040] Example 2, referring to Figures 1 to 9, is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that when the screen plate 102 is performing screening work, it is necessary to prevent the coal blocks on the screen plate 102 from splashing during vibration and then entering the inside of the coal mill from the discharge port 101b. It is also necessary to prevent the coal blocks falling from the screen hole 102a from rolling from the receiving plate 103 to the discharge port 101b, thereby affecting the subsequent classification and grinding work.

[0041] Specifically, a movable rod 202b is provided on the outer wall of the vibration rod 202, and the movable rod 202b is movably matched with the movable channel 101d, and movable rods 205 are provided on both sides of the baffle 106a.

[0042] Preferably, the movable rod 205 is movably engaged with the guide groove 101e, and a movable block 205a is provided on the outer wall of the movable rod 205, and the movable block 205a is movably engaged with the movable rod 202b.

[0043] Preferably, a block 205 b is provided on the outer wall of the moving rod 205 , and a first inclined surface 205 b - 1 is provided on the outer wall of the block 205 b .

[0044] Preferably, a rotating rod 206 is provided on the inner wall of the box body 101, a locking block 206a is provided at one end of the rotating rod 206, and a handle 206b is provided at the other end of the rotating rod 206. A second inclined surface 206a-1 is provided on the outer wall of the locking block 206a, and the second inclined surface 206a-1 and the first inclined surface 205b-1 are movably matched.

[0045] Among them, it is preferred that two rotating rods 206 are symmetrically provided; after starting the motor 203, the vibrating rod 202 drives the screen plate 102 to move up and down for screening. During the first upward movement of the vibrating rod 202, the movable rod 202b connected thereto is driven to move upward, and the movable rod 202b then cooperates with the block 205b, so that the block 205b drives the moving rod 205 to move upward, thereby the baffle 106a connected to the moving rod 205 moves upward to form a barrier, effectively preventing the coal from splashing during the screening process. During the upward movement of the moving rod 205, as shown in FIG9 , the block 205b moves upward, The first inclined surface 205b-1 and the second inclined surface 206a-1 cooperate with each other to make the rotating rod 206 rotate counterclockwise, and then the moving rod 205 moves up, and the rotating rod 206 returns to its original state. Further, driven by the vibrating rod 202, the movable rod 202b moves down, so that the moving rod 205 falls, and the blocking block 205b falls above the locking block 206a, thereby pulling up the baffle 106a. Pulling up the upper baffle 106a can effectively prevent the coal blocks from splashing when the screen plate 102 completes the coal screening work, and pulling up the lower baffle 106a can effectively prevent the coal blocks falling from the screen hole 102a from rolling into the discharge port 101b.

[0046] In summary, by setting the baffle 106a, after starting the motor 203, the vibrating rod 202 moves up and down to drive the screen plate 102 to screen the coal blocks. During the upward movement of the vibrating rod 202, the movable rod 202b drives the block 205b to move upward, and the movable rod 205 drives the baffle 106a to move upward. Pulling up the baffle 106a can prevent the coal blocks from splashing during the screening process to a certain extent, thereby facilitating the subsequent classification and grinding work.

[0047] Example 3, referring to Figures 1 to 10, is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but is different in that after the screening work is completed, the screened coal blocks need to be fed into the coal mill for grinding in batches. By starting the first cylinder 304, the first push shovel 302 pushes the coarser coal blocks into the discharge port 101b. During the movement of the first push shovel 302, the matching column 302a-1 cooperates with the matching groove 306a to rotate the rotating drum 306, and the lever 307a further moves the handle 206b, causing the locking block 206a to rotate, releasing the restriction on the block 205b, and the baffle 106a moves downward, thereby facilitating the material guiding work.

[0048] Specifically, a support frame 304a is provided under the first cylinder 304 and the second cylinder 305. The output end of the first cylinder 304 is fixedly connected to the first dozer 302. The output end of the second cylinder 305 is fixedly connected to the second dozer 303. A rotating drum 306 is provided inside the box 101.

[0049] Preferably, a matching groove 306a is opened on the outer wall of the rotating drum 306, a connecting plate 302a is provided on the outer wall of the first shovel 302, a matching column 302a-1 is provided on the outer wall of the connecting plate 302a, the matching column 302a-1 and the matching groove 306a are movably matched, and a support block 306b is provided on the outer wall of the rotating drum 306.

[0050] Preferably, the support block 306b is connected to the box body 101, a turntable 307 is provided at one end of the rotating cylinder 306, a lever 307a is provided on the outer wall of the turntable 307, and the lever 307a and the handle 206a are movably matched.

[0051] Among them, the support frame 304a is fixedly connected to the box body 101, and the support frame 304a is used to fix the first cylinder 304 and the second cylinder 305; the rotating drum 306 is preferably symmetrically provided with two; the matching groove 306a is set to a spiral shape; the connecting plate 302a is preferably symmetrically provided with two; the support block 306b is fixedly connected to the box body 101, and the support block 306b is used to place the rotating drum 306 without affecting the rotation of the rotating drum 306; when the coal blocks are screened, the motor 203 is stopped, and the screen plate 102 returns to the initial position as shown in Figure 5. At this time, the baffle 106a is still in the raised state, and the first cylinder 304 is started first to push the coarse coal left on the screen plate 102 for grinding. During the movement of the first shovel 302, the matching column 302a-1 on the connecting plate 302a is movably matched with the matching groove 306a, so that the rotating drum 306 rotates, and then the turntable 307 rotates to drive the dial rod 307a to dial The handle 206b rotates the locking block 206a to make the blocking block 205b fall, thereby the baffle 106a moves down to the bottom of the movable groove 105a, facilitating the guide plate 106 to guide the material. The first push shovel 302 continues to push the coal. At this time, the rotation of the drum 306 will not affect the baffle 106a. When the coarse coal is ground to a size similar to that of the fine coal, it can be ground together with the fine coal, or after the coarse coal is ground, the coal powder is taken out and the fine coal is started. At this time, the second cylinder 305 can be started to make the second push shovel 303 push the fine coal out and drop it from the guide plate 106 to the discharge port 101b. Through this setting, the baffle 106a can complete the function switching under different working conditions. That is, in the screening state, the baffle 106a is pulled up to prevent the coal from splashing and affecting the screening effect. In the feeding state, the baffle 106a drives the guide plate 106 connected thereto to move down, facilitating the transportation of coal.

[0052] In summary, after the mixed coal blocks are screened, the motor 203 is stopped and the first cylinder 304 is started, so that the first dozer 302 pushes the coarse coal remaining on the screen plate 102. At the same time, the matching column 302a-1 and the matching groove 306a are movably matched, so that the rotating drum 306 drives the turntable 307 to rotate, and the lever 307a moves the handle 206b, thereby moving the baffle 106a downward, thereby facilitating the material guide plate 106 to guide the material, so that the coarse coal slides from the material guide plate 106 to the discharge port 101b under the push. After the coarse coal is ground, the first dozer 302 returns to its original position, and the second cylinder 305 is started, so that the second dozer 303 pushes the fine coal into the coal mill for grinding.

[0053] 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.

[0054] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., 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.

[0055] 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.

[0056] 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 feeding device, characterized in that: include, A screening assembly (100) comprises a box (101), a feed port (101a) provided above the box (101), a discharge port (101b) provided below the box (101), a sieve plate (102) and a receiving plate (103) respectively provided inside the box (101), and a plurality of sieve holes (102a) provided on the sieve plate (102); A driving assembly (200) comprises a groove (201) extending through the upper portion of the housing (101), two vibrating rods (202) disposed above the sieve plate (102), a connecting rod (202a) disposed between the two vibrating rods (202), a motor (203) disposed outside the housing (101), a fixing frame (203b) disposed on the outer wall of the motor (203), a rotating shaft (203a) disposed at the output end of the motor (203), a cam (204) disposed on the outer wall of the rotating shaft (203a), a rotating column (204a) disposed on the outer wall of the cam (204), and an operating rod (204a-1) movably disposed between the connecting rod (202a) and the rotating column (204a). The feeding assembly (300) comprises two accommodating cavities (301) provided on the inner wall of the box body (101), a first push shovel (302) and a second push shovel (303) respectively provided inside the two accommodating cavities (301), and a first cylinder (304) and a second cylinder (305) respectively provided outside the box body (101).

2. The coal mill feeding device according to claim 1, characterized in that: The groove (201) and the vibration rod (202) are movably matched, the inner wall of the box body (101) is respectively provided with a slide groove (101c), a movable channel (101d) and a guide groove (101e), and the outer wall of the screen plate (102) is provided with a slide plate (102b), and the slide plate (102b) is movably matched with the slide groove (101c).

3. The coal mill feeding device according to claim 2, characterized in that: Two placement plates (104) are provided below the sieve plate (102) and the receiving plate (103). The placement plates (104) are fixedly connected to the inner wall of the box body (101), and a supporting plate (105) is provided on the outer wall of the placement plate (104) away from the first cylinder (304). A movable groove (105a) is provided on the outer wall of the supporting plate (105). A baffle (106a) is movably provided inside the movable groove (105a), and a material guide plate (106) is provided on the outer wall of the baffle (106).

4. The coal mill feeding device according to claim 3, characterized in that: A movable rod (202b) is provided on the outer wall of the vibration rod (202), and the movable rod (202b) is movably matched with the movable channel (101d). Moving rods (205) are provided on both sides of the baffle (106a).

5. The coal mill feeding device according to claim 4, characterized in that: The movable rod (205) is movably matched with the guide groove (101e), a movable block (205a) is provided on the outer wall of the movable rod (205), and the movable block (205a) is movably matched with the movable rod (202b).

6. The coal mill feeding device according to claim 5, characterized in that: A clamping block (205b) is provided on the outer wall of the moving rod (205), and a first inclined surface (205b-1) is provided on the outer wall of the clamping block (205b).

7. The coal mill feeding device according to claim 6, characterized in that: The inner wall of the box body (101) is provided with a rotating rod (206), one end of the rotating rod (206) is provided with a locking block (206a), the other end of the rotating rod (206) is provided with a handle (206b), the outer wall of the locking block (206a) is provided with a second inclined surface (206a-1), and the second inclined surface (206a-1) and the first inclined surface (205b-1) are movably matched.

8. The coal mill feeding device according to claim 7, characterized in that: A support frame (304a) is provided below each of the first cylinder (304) and the second cylinder (305); the output end of the first cylinder (304) is fixedly connected to the first dozer (302); the output end of the second cylinder (305) is fixedly connected to the second dozer (303); and a rotating drum (306) is provided inside the box (101).

9. The coal mill feeding device according to claim 8, characterized in that: The outer wall of the rotating drum (306) is provided with a matching groove (306a), the outer wall of the first shovel (302) is provided with a connecting plate (302a), the outer wall of the connecting plate (302a) is provided with a matching column (302a-1), the matching column (302a-1) and the matching groove (306a) are movably matched, and the outer wall of the rotating drum (306) is provided with a supporting block (306b).

10. The coal mill feeding device according to claim 9, characterized in that: The support block (306b) is connected to the box (101), a rotating disk (307) is provided at one end of the rotating cylinder (306), a shifting rod (307a) is provided on the outer wall of the rotating disk (307), and the shifting rod (307a) and the handle (206a) are movably matched.

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