Coal storage and transportation device with high-stability operation
By setting up multi-level decomposition and crushing treatments in the coal storage and transportation device, the problem of unstable decomposition efficiency is solved, the stable operation and output uniformity of the coal mill are ensured, and the high stability of the coal storage and transportation device is achieved. .
Patent Information
- Application Number
- CN202420938875.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing impurity removal device has unstable impurity removal efficiency on the raw coal transmission line, which affects the feed uniformity and stable yield of the coal mill.
A highly stable operation coal storage and transportation device was designed, including transfer stations No. 1 and No. 2. Each transfer station was equipped with decompression components and dual feed belts. Mobile belt machines and crushers were used to ensure the continuous supply of raw coal. and the decomposition effect, the decomposition assembly realizes the removal of large pieces of decomposition by combining the decomposition roller, decomposition rod and lever.
Through multi-layer decomposition and crushing treatment, the feed uniformity of raw coal and the stable operation of the coal mill are ensured, the impact of large pieces of debris in raw coal on production is avoided, and backup decomposition is provided in emergency situations. and breaking ability.
Smart Images
Figure CN222273531U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal storage and transportation devices, in particular to a coal storage and transportation device with high stable operation. Background Art
[0002] Coal slurry is prepared by using coal mill for crushing. Coal mill is a large drum crushing equipment. To ensure production efficiency and energy saving, it is necessary to continuously transport raw coal through the feeding system. Before the raw coal enters the coal mill, it is necessary to remove debris such as wood and cloth bags from the raw coal. However, the removal efficiency of the existing impurity removal device is not stable, resulting in uneven feeding of the coal mill, which in turn causes unstable production. Summary of the invention
[0003] The technical problem to be solved by the utility model is that the impurity removal efficiency of the impurity removal device on the raw coal transmission line is unstable, which affects the feeding of the coal mill.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a highly stable coal storage and transportation device, including a coal receiving pit, a bucket elevator, a No. 1 transfer station, a circular material yard, a No. 2 transfer station and a coal grinding silo arranged in sequence along the material flow direction, a mobile belt conveyor capable of adjusting the unloading position is arranged between the output belt of the No. 1 transfer station and the feed belts of the circular material yard and the No. 2 transfer station, impurity removal components are provided in the No. 1 transfer station and the No. 2 transfer station, and double feed belts are provided in the No. 1 transfer station and the No. 2 transfer station, and the impurity removal component of the No. 1 transfer station is arranged on one feed belt.
[0005] Preferably, the impurity removal component includes a casing, a material guide table fixed in the casing, a feeding belt connected to the unloading end of the material guide table, and a impurity removal roller rotatably arranged at the unloading end of the material guide table, a loading belt is arranged above the top of the material guide table, the unloading end of the material guide table is in an arc shape and is coaxially arranged with the impurity removal roller, impurity removal rods are equidistantly arranged on the outer side wall of the impurity removal roller along the axial direction, and the movable end of the impurity removal rod is inclined, the rotation direction of the impurity removal roller is opposite to the direction of the material on the material guide table, and a shifting rod is arranged above the impurity removal roller.
[0006] Preferably, a debris removal channel is fixedly and obliquely arranged in the casing, the levers are arranged in pairs, the debris removal rod is located between two of the paired levers, the levers are arranged obliquely, and the bottom ends of the levers are connected to the top ends of the debris removal channel.
[0007] Preferably, the front side of the impurity removing rod along the rotation direction is provided with grabbing thorns.
[0008] Preferably, a double-roll crusher is arranged downstream of the impurity removal component.
[0009] 1. The utility model provides a coal storage and transportation device with high stability. The coal from the coal pit is removed from the coal and crushed at the No. 1 transfer station before being piled up in the circular material yard. The circular material yard then quantitatively transports the raw coal to the No. 2 transfer station. After further removal of impurities and crushing, the raw coal is transported to the coal mill silo and finally supplied to the coal mill. The circular material yard is used as a buffer silo to supply the coal mill silo in time, thereby ensuring the stability of the production operation of the coal mill.
[0010] 2. A mobile belt conveyor is arranged between Transfer Station No. 1 and Transfer Station No. 2. When the circular material yard is not supplied in time, the double feeding belts of Transfer Station No. 2 can synchronously supply the raw coal in Transfer Station No. 1 and the circular material yard to Transfer Station No. 2 to deal with emergencies.
[0011] 3. When the No. 1 transfer station fails, the raw coal can enter the circular material yard. The impurity removal components and crusher in the No. 2 transfer station serve as backup devices, which can remove impurities and crush the raw coal without affecting the coal grinding production and avoiding the impact of coal pit piles.
[0012] 4. The impurity removal component can pick out large pieces of wood and bags in the flowing raw coal through the reverse rotation of the impurity removal roller and the inclined arrangement of the movable end of the impurity removal rod. The subsequent small pieces of wood can be separated by screening after crushing, ensuring the stability of the impurity removal work and thus ensuring the stable discharge of the impurity removal component. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.
[0015] Figure 2 It is a structural schematic diagram of the impurity removal component in the embodiment of the utility model.
[0016] Figure 3 It is a top view of the mobile belt conveyor in the embodiment of the utility model.
[0017] In the figure: 1. Coal receiving pit; 2. Bucket elevator; 3. Transfer station No. 1; 31. Machine casing; 32. Loading belt; 33. Material guide table; 34. Trash removal roller; 35. Trash removal rod; 36. Grabbing bar; 37. Trash removal channel; 38. Push rod; 39. Feeding belt; 4. Circular material yard; 5. Transfer station No. 2; 6. Coal grinding silo; 7. Mobile belt conveyor. DETAILED DESCRIPTION
[0018] like Figure 1-3The utility model provides a highly stable coal storage and transportation device, comprising a coal receiving pit 1, a bucket elevator 2, a No. 1 transfer station 3, a circular material yard 4, a No. 2 transfer station 5 and a coal grinding silo 6 arranged in sequence along the material flow direction, a mobile belt conveyor 7 capable of adjusting the unloading position is arranged between the output belt of the No. 1 transfer station 3 and the feeding belts of the circular material yard 4 and the No. 2 transfer station 5, impurity removal components are arranged in the No. 1 transfer station 3 and the No. 2 transfer station 5, and the No. 1 transfer station 3 and the No. 2 transfer station 5 are both provided with double feeding belts and the impurity removal component of the No. 1 transfer station 3 is arranged on one feeding belt.
[0019] The raw coal is poured into the coal receiving pit 1 by a coal truck, lifted by a bucket elevator 2 and conveyed to the No. 1 transfer station 3 by a belt, and the impurity removal component in the No. 1 transfer station 3 picks out large pieces of wood and cloth bags in the raw coal. The impurity-removing raw coal is further conveyed to the subsequent crushing section. After the crusher crushes the raw coal, the raw coal is broken into small pieces and placed in a circular material yard 4, where it is distributed by a rotating belt conveyor; the preliminarily crushed raw coal is transported to the No. 2 transfer station 5 through the circular material yard 4, and the No. 2 transfer station 5 removes impurities, crushes and screens the raw coal again, and after crushing to form granular coal, small pieces of wood are screened out, and finally transported to the coal grinding silo 6.
[0020] Transfer Station No. 1 3 and Transfer Station No. 2 5 both have double-input and double-output belts, the circular material yard 4 has one feed belt and two discharge belts, one of the two discharge belts is open and one is spare, both are connected to a feed belt of Transfer Station No. 2 5, and the mobile belt conveyor 7 is arranged above the other feed belt of Transfer Station No. 2 5 and the feed belt of the circular material yard 4, connected to a discharge belt of Transfer Station No. 1 3, and can directly connect a discharge belt of Transfer Station No. 1 3 to a discharge belt of Transfer Station No. 2 5 as needed, so that Transfer Station No. 2 is in a double-belt feeding state, thereby increasing the feed amount.
[0021] like Figure 2 The impurity removal component comprises a housing 31, a material guide table 33 fixed in the housing 31, a feeding belt 39 connected to the material guide table 33 unloading end and an impurity removal roller 34 rotatably arranged at the material guide table 33 unloading end, a feeding belt 32 is arranged above the top of the material guide table 33, the material guide table 33 unloading end is in an arc shape and is arranged coaxially with the impurity removal roller 34, impurity removal rods 35 are arranged equidistantly along the axial direction on the outer wall of the impurity removal roller 34, and the movable end of the impurity removal rod 35 is arranged obliquely, the impurity removal roller 34 rotates in the opposite direction to the material on the material guide table 33, and a lever 38 is arranged above the impurity removal roller 34.
[0022] The material guide table 33 is an inclined table structure, and the loading belt 32 conveys the raw coal to the material guide table 33 through the hopper. The raw coal slides down from the material guide table 33, making the raw coal more dispersed. The large pieces of wood pressed at the bottom of the raw coal cannot pass through the gap between the impurity removal roller 34 and the material guide table 33, so that the large pieces of wood are pierced by the impurity removal rod 35 and scraped on the impurity removal rod 35. After the impurity removal rod 35 rotates to the top, the large pieces of wood on the impurity removal rod 35 are peeled off by the lever 38 and enter the impurity removal channel 37; the cloth bags in the raw coal are hung on the grab thorns 36 and are continuously broken during the rotation of the impurity removal roller 34. Part of them are screened out later, and the remaining part is too small to affect the coal grinding process.
[0023] like Figure 2 As shown. A debris removal channel 37 is fixedly arranged in an inclined manner in the housing 31, the levers 38 are arranged in pairs, the debris removal rods 35 are located between the two levers 38 in a pair, the levers 38 are arranged in an inclined manner, and the bottom ends of the levers 38 are connected to the top ends of the debris removal channel 37. After the wood is peeled off from the debris removal rods 35 by the levers 38, it enters the debris removal channel 37 by gravity and is finally collected and discharged.
[0024] like Figure 2 As shown, it is difficult for the crusher to break the bags, in order to break the large bags in the raw coal, to avoid covering the screen plate during subsequent screening, which affects the screening efficiency and quality. The front side of the impurity removal bar 35 along the rotation direction is provided with a grab thorn 36.
[0025] As a preferred embodiment of the utility model, a double-roll crusher is arranged downstream of the impurity removal component. The discharge particle size of the double-roll crusher of the No. 1 transfer station 3 is larger than the discharge particle size of the double-roll crusher of the No. 2 transfer station 5.
Claims
1. A highly stable coal storage and transportation device, characterized in that: The invention comprises a coal receiving pit (1), a bucket elevator (2), a No. 1 transfer station (3), a circular material yard (4), a No. 2 transfer station (5) and a coal grinding silo (6) which are arranged in sequence along the material flow direction; a mobile belt conveyor (7) capable of adjusting the material discharge position is arranged between the output belt of the No. 1 transfer station (3) and the feed belts of the circular material yard (4) and the No. 2 transfer station (5); impurity removal components are arranged in the No. 1 transfer station (3) and the No. 2 transfer station (5); both the No. 1 transfer station (3) and the No. 2 transfer station (5) are provided with double feed belts and the impurity removal component of the No. 1 transfer station (3) is arranged on one feed belt.
2. A highly stable coal storage and transportation device as claimed in claim 1, characterized in that: The impurity removal component comprises a housing (31), a material guide table (33) fixed in the housing (31), a feeding belt (39) connected to a material discharge end of the material guide table (33), and an impurity removal roller (34) rotatably arranged at the material discharge end of the material guide table (33); a feeding belt (32) is arranged above the top of the material guide table (33); the material discharge end of the material guide table (33) is in an arc shape and is coaxially arranged with the impurity removal roller (34); impurity removal rods (35) are equidistantly arranged on the outer wall of the impurity removal roller (34) along the axial direction, and the movable ends of the impurity removal rods (35) are arranged obliquely; the impurity removal roller (34) rotates in a direction opposite to the direction of the material on the material guide table (33); and a shifting rod (38) is arranged above the impurity removal roller (34).
3. A highly stable coal storage and transportation device as claimed in claim 2, characterized in that: A debris removal channel (37) is fixedly and obliquely arranged in the casing (31); the levers (38) are arranged in pairs; the debris removal rod (35) is located between two of the paired levers (38); the levers (38) are arranged obliquely, and the bottom ends of the levers (38) are connected to the top ends of the debris removal channel (37).
4. A highly stable coal storage and transportation device as claimed in claim 3, characterized in that: The impurity removing rod (35) is provided with a grabbing barb (36) on the front side along the rotation direction.
5. A highly stable coal storage and transportation device as claimed in claim 1, characterized in that: A double-roll crusher is arranged downstream of the impurity removal assembly.