A slagging structure of a coal mill

Abstract

The utility model discloses a kind of coal mill's deslagging structure, belong to coal mill technical field, comprising: deslagging tank, the upper end of the deslagging tank is provided with inlet, the side wall of the inlet is fixedly connected with baffle, the front side of the deslagging tank is hingedly connected with tank door, the inner wall of the deslagging tank is provided with filter assembly, the inner wall of the deslagging tank is installed with vibration assembly.The utility model can screen coal powder by the cooperation of filter assembly and vibration assembly, while avoid the filter dead angle caused by the local accumulation of coal powder in screening, significantly improve screening efficiency and effect.

Description

Technical Field

[0001] This utility model specifically relates to a slag discharge structure for a coal mill, belonging to the field of coal mill technology. Background Technology

[0002] Coal is a widely used mineral energy source. The raw material mined from coal is mostly in large blocks, which is inconvenient for transportation and processing. Therefore, before it is transported from the mine, it must be ground and crushed into fine particles by a coal mill to facilitate transportation and refining.

[0003] During the patent application process, a search revealed a Chinese patent with patent number CN219024578U: a slag discharge structure for a coal mill, comprising: a support column, a base plate, a slag inlet, a slag treatment structure, and a conveying pump. The slag treatment structure is located on one side of the support column, with a filter screen inside. A chain is positioned above the filter screen, and a scraper is located on the inner side of the chain. This utility model treats the slag generated during the operation of the coal mill through the slag treatment structure. After entering the slag treatment structure, the slag falls onto the filter screen and is filtered. The rotation of the drive wheel drives the outer chain, which in turn drives the driven wheel, causing the scraper on the inner side of the chain to move cyclically, scraping off the slag that has not been filtered out from the filter screen. The slag filtered out by the filter screen and the slag in the collection box are discharged through the conveying block and the outlet pipe, reducing accumulation. The operation is simple and the work efficiency is higher.

[0004] The above solution filters coal powder through a filter plate during use, but it cannot effectively screen the coal powder. When there is too much coal powder, it will accumulate in the middle of the filter plate, affecting the filtration efficiency and effect. In addition, some coal slag will also adhere to the inner wall of the machine, affecting the smooth operation of coal grinding. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by providing a slag discharge structure for a coal mill, thereby achieving the aforementioned objective.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a slag discharge structure for a coal mill, comprising: a slag discharge box, wherein an inlet is provided at the upper end of the slag discharge box, a door is hinged to the front side of the slag discharge box, a discharge port is provided at the lower front side of the slag discharge box, and a filter assembly is provided inside the slag discharge box; The filter assembly includes a movable frame and a filter frame. The bottom of the movable frame is not sealed and is located below the filter frame. Two supports are fixedly connected to the upper end of the movable frame. The two supports are rotatably connected to the two sides of the filter frame via pivots. Filter holes are provided at the bottom of the filter frame. Slider blocks are fixedly connected to the front and rear sides of the movable frame. Two guide rods are fixedly connected to the inner wall of the slag discharge box. Both guide rods pass through the sliders and are slidably connected to them. An electric telescopic rod is installed on the inner wall of the slag discharge box. The output end of the electric telescopic rod is fixedly connected to one side of the movable frame.

[0007] Furthermore, a connecting seat is installed at each of the four corners of the bottom of the filter frame. Each connecting seat is rotatably connected to a sliding sleeve via a rotating shaft. A guide rod 2 is slidably connected inside each sliding sleeve. The guide rod 2 is inclinedly and fixedly connected to the inner wall of the slag discharge box.

[0008] Furthermore, a limiting plate is fixedly connected to the end of the guide rod two away from the slag discharge box, and a rubber pad is installed on one side of the limiting plate and on the outer side wall of the guide rod two.

[0009] Furthermore, a baffle is provided on the inner wall of the feed inlet, and a vibration assembly is installed inside the slag discharge box. The vibration assembly includes a motor fixedly connected to the front side of the slag discharge box. The output end of the motor passes through the slag discharge box and is fixedly connected to a rotating rod. Multiple push rods are fixedly connected to the outer side of the rotating rod, and a push block is fixedly connected to one end of each of the multiple push rods. A sliding rod is fixedly connected to one side of the baffle. A guide plate is fixedly connected to one end of the sliding rod that passes through the side wall of the feed inlet. A spring is installed on one side of the guide plate and sleeved on the outer side wall of the sliding rod.

[0010] Furthermore, the rotating rod is located on one side of the baffle, and one end of the push block abuts against the baffle.

[0011] Furthermore, the number of filter holes is multiple and evenly distributed.

[0012] Beneficial effects: When the screening frame moves horizontally left and right along the slag discharge box, it spreads out the coal powder inside, preventing the slag from accumulating in a localized area. At the same time, when the screening frame tilts alternately to both sides along the rotating axis, the coal powder in the screening frame slides along the tilt direction, creating a tumbling effect that improves the filtration efficiency. The combination of these two effects further enhances the screening efficiency. The motor-driven pusher blocks vibrate the baffle, which shakes off the coal powder adhering to the inner wall of the feed inlet, preventing blockage and ensuring that the material enters the slag discharge box smoothly. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the slag discharge box structure of this utility model; Figure 2 This is a schematic cross-sectional view of the slag discharge box of this utility model; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the filter assembly of this utility model from a lower perspective. Figure 5 This is a schematic diagram of the disassembled structure of the fixed plate and the movable rod of this utility model.

[0014] In the diagram: 1. Slag discharge box; 101. Guide rod one; 2. Feed inlet; 201. Baffle; 3. Box door; 4. Filter assembly; 401. Moving frame; 403. Support; 404. Filter frame; 405. Filter hole; 406. Connecting seat; 407. Sliding sleeve; 408. Sliding block; 409. Guide rod two; 4091. Limiting plate; 6. Electric telescopic rod; 5. Vibration assembly; 501. Motor; 502. Rotating rod; 503. Push rod; 504. Push block; 2011. Sliding rod; 2012. Guide plate; 2013. Spring; 7. Discharge port. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 As shown, a slag discharge structure for a coal mill includes: a slag discharge box 1, an inlet 2 at the upper end of the slag discharge box 1, and an inclined discharge port 7 at the front side of the slag discharge box 1. The discharge port 7 is connected to the interior of the slag discharge box 1. A baffle 201 is provided on the side wall of the inlet 2. A door 3 is hinged to the front side of the slag discharge box 1. A filter assembly 4 is provided on the inner wall of the slag discharge box 1. A vibration assembly 5 is installed on the inner wall of the slag discharge box 1. The filter assembly 4 includes a movable frame 401 and a filter frame 404. The movable frame 401 is located below the filter frame 404. The lower part of the movable frame 401 is not sealed. The filtered coal powder falls into the discharge port 7 after being supported by the movable frame 401 and is discharged from the discharge port 7. Two supports 403 are fixedly connected to the upper end of the movable frame 401. The filter frame 404 is rotatably connected between the two supports 403 through a rotating shaft. The bottom of the filter frame 404 has filter holes 405, and there are multiple filter holes 405 distributed at equal intervals. Connecting seats 406 are installed on the left and right sides of the bottom of the filter frame 404. The inner walls of the two connecting seats 406 are rotatably connected to sliding sleeves 407 through a rotating shaft. Four guide rods 409 are fixedly connected to the inner wall of the slag discharge box 1. The four sliding sleeves 407 are slidably connected to the outer walls of the four guide rods 409 respectively. The four guide rods 409 are located on both sides of the filter frame 404 and are inclined. The movable frame 401 is fixedly connected to sliders 408 on both its front and rear sides. Two guide rods 101 are fixedly connected to the inner wall of the slag discharge box 1, and both guide rods 101 pass through and slidably connect to the sliders 408. The sliding engagement between the guide rods 101 and the sliders 408 allows the movable frame 401 to slide smoothly inside the slag discharge box 1. The filter assembly 4 can screen coal lumps in the pulverized coal, ensuring the processing efficiency of the pulverized coal.

[0017] An electric telescopic rod 6 is installed on the inner wall of the slag discharge box 1, and the output end of the electric telescopic rod 6 is fixedly connected to one side of the movable frame 401. The movable frame 401 is driven to move along the inner wall of the slag discharge box 1 by the electric telescopic rod 6.

[0018] The vibration assembly 5 includes a motor 501 fixedly connected to the front side of the slag discharge box 1. The output end of the motor 501 passes through the slag discharge box 1 and is fixedly connected to a rotating rod 502. Multiple push rods 503 are fixedly connected to the outer wall of the rotating rod 502, and a push block 504 is fixedly connected to one end of each push rod 503. The push block 504 rotates to push the baffle 201, thereby causing vibration at the feed inlet 2. The vibration reduces the formation of slag piles and prevents coal slag from adhering to or clogging the feed inlet 2.

[0019] A slide rod 2011 is fixedly connected to one side of the baffle 201. A guide plate 2012 is fixedly connected to one end of the slide rod 2011 that passes through the side wall of the feed inlet 2. A spring 2013 is installed on one side of the guide plate 2012 and on the outer side wall of the slide rod 2011.

[0020] The rotating rod 502 is located on one side of the baffle 201, and one end of the push block 504 abuts against the baffle 201. The push block 504 pushes the baffle 201, thereby moving the guide plate 2012. A limiting plate 4091 is fixedly connected to the end of the guide rod 409 away from the slag discharge box 1. A rubber pad is installed on one side of the limiting plate 4091 and on the outer side wall of the guide rod 409. The limiting plate 4091 prevents the sliding sleeve 407 from sliding out of the guide rod 409 and falling off.

[0021] The implementation principle of the slag discharge structure of a coal mill in this embodiment is as follows: During use, the ground coal powder enters the slag discharge box 1 through the feed inlet 2 and falls into the filter frame 404. During the process of entering, the coal powder is prone to accumulate in the feed inlet 2, affecting the feeding speed. The motor 501 can be started to drive the rotating rod 502 to rotate. The rotating rod 502 drives multiple push rods 503 to make circular motion, thereby driving the push block 504 to periodically resist and push the baffle 201 and the guide plate 2012 on one side of the slide rod 2011 to move, while squeezing the spring 2013. When the push block 504 disengages from the baffle 201, the spring 2013 releases its elasticity and pushes the baffle 201 and the slide rod 2011 to reset, thereby making The guide plate 2012 vibrates to reduce the accumulation of coal powder at the feed inlet 2. After the coal powder falls into the filter frame 404, the electric telescopic rod 6 is activated to drive the moving frame 401 to slide horizontally inside the slag discharge box 1, so that the coal powder in the filter frame 404 is spread out to avoid local accumulation. In addition, during the horizontal movement of the filter frame 404, the sliding sleeve 407 slides along the inclined guide rod 409. The sliding sleeve 407 drives the filter frame 404 to tilt left and right around the rotation axis of the support 403, creating a shaking effect. At the same time, during the tilting of the filter frame 404, the coal powder rolls in the filter frame 404, increasing the chance of the coal powder contacting the filter holes 405 and improving the filtration effect.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A slag discharge structure for a coal mill, comprising: The slag discharge box (1) is characterized in that: the upper end of the slag discharge box (1) is provided with a feed inlet (2), the lower front side of the slag discharge box (1) is provided with a discharge outlet (7), and a filter assembly (4) is provided inside the slag discharge box (1). The filter assembly (4) includes a movable frame (401) and a filter frame (404). The movable frame (401) is located below the filter frame (404). Two supports (403) are fixedly connected to the upper end of the movable frame (401). The two supports (403) are rotatably connected to the two sides of the filter frame (404) through a rotating shaft. A filter hole (405) is provided at the bottom of the filter frame (404). Slider blocks (408) are fixedly connected to the front and rear sides of the movable frame (401). Two guide rods (101) are fixedly connected to the inner wall of the slag discharge box (1). The two guide rods (101) pass through the sliders (408) and are slidably connected to them. An electric telescopic rod (6) is installed on the inner wall of the slag discharge box (1). The output end of the electric telescopic rod (6) is fixedly connected to one side of the movable frame (401).

2. The slag discharge structure of a coal mill as described in claim 1, characterized in that: Connecting seats (406) are installed at the four corners of the bottom of the filter frame (404). Each connecting seat (406) is rotatably connected to a sliding sleeve (407) via a rotating shaft. A guide rod (409) is slidably connected inside each sliding sleeve (407). The guide rod (409) is obliquely and fixedly connected to the inner wall of the slag discharge box (1).

3. The slag discharge structure of a coal mill as described in claim 2, characterized in that: The guide rod 2 (409) is fixedly connected to a limiting plate (4091) at one end away from the slag discharge box (1). A rubber pad is installed on one side of the limiting plate (4091) and on the outer side wall of the guide rod 2 (409).

4. The slag discharge structure of a coal mill as described in claim 1, characterized in that: A baffle (201) is provided on the inner side wall of the feed inlet (2).

5. The slag discharge structure of a coal mill as described in claim 4, characterized in that: A vibration assembly (5) is also installed inside the slag discharge box (1). The vibration assembly (5) includes a motor (501) fixedly connected to the front side of the slag discharge box (1). The output end of the motor (501) passes through the slag discharge box (1) and is fixedly connected to a rotating rod (502). Multiple push rods (503) are fixedly connected to the outside of the rotating rod (502). One end of each of the multiple push rods (503) is fixedly connected to a push block (504).

6. The slag discharge structure of a coal mill as described in claim 5, characterized in that: A slide rod (2011) is fixedly connected to one side of the baffle (201). A guide plate (2012) is fixedly connected to one end of the slide rod (2) that passes through the side wall of the feed inlet (2). A spring (2013) is installed on one side of the guide plate (2012) and on the outer side wall of the slide rod (2011).

7. The slag discharge structure of a coal mill as described in claim 6, characterized in that: The rotating rod (502) is located on one side of the baffle (201), and one end of the push block (504) abuts against the baffle (201).

8. The slag discharge structure of a coal mill as described in claim 1, characterized in that: The number of filter holes (405) is multiple and they are evenly distributed.

9. The slag discharge structure of a coal mill as described in claim 1, characterized in that: The bottom of the movable frame (401) is not sealed.

10. The slag discharge structure of a coal mill as described in claim 1, characterized in that: The slag discharge box (1) is hinged to a door (3) on the front side.

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