CN207614931U - A kind of quick washing grinding mill - Google Patents
A kind of quick washing grinding mill Download PDFInfo
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- CN207614931U CN207614931U CN201721153598.3U CN201721153598U CN207614931U CN 207614931 U CN207614931 U CN 207614931U CN 201721153598 U CN201721153598 U CN 201721153598U CN 207614931 U CN207614931 U CN 207614931U
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- 238000005406 washing Methods 0.000 title 1
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 4
- 239000003245 coal Substances 0.000 abstract description 26
- 238000010494 dissociation reaction Methods 0.000 abstract description 13
- 230000005593 dissociations Effects 0.000 abstract description 13
- 239000002245 particle Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
一种快速冲击碾磨机，尤其适用于选煤厂含水中煤的深度破碎解离。该快速冲击碾磨机为筒式结构，包括安装底座，安装底座上部设有筒式机体，筒式机体内壁设有反击块，底部设有敞开式快速出料口，上部设有进料口，内部设有碎磨辊筒，碎磨辊筒上设有弧形碎磨冲击块，碎磨辊筒与传动装置通过联轴器连接。该快速冲击碾磨机结构简单，碎磨粒度下限低，过粉碎现象小，不易堵塞，碎磨后中煤产品解离效果好，有利于实现对中煤中精煤的回收，可有效解决现有煤炭破碎设备破碎粒度下限高，中煤破碎解离效果差，破碎腔易堵塞，以及磨煤后产品过粉碎现象严重，后续分选及处理成本高的问题。
The utility model relates to a fast impact mill, which is especially suitable for deep crushing and dissociation of water-containing coal in a coal preparation plant. The rapid impact mill has a cylindrical structure, including a mounting base, a cylindrical body on the upper part of the mounting base, an impact block on the inner wall of the cylindrical body, an open fast discharge port on the bottom, and a feeding port on the upper part. There is a crushing roller inside, and an arc-shaped crushing impact block is arranged on the crushing roller, and the crushing roller is connected with the transmission device through a coupling. The rapid impact mill has a simple structure, a lower limit of crushing particle size, less over-crushing phenomenon, and is not easy to be blocked. The lower limit of crushing particle size of coal crushing equipment is high, the effect of crushing and dissociation of medium coal is poor, the crushing chamber is easy to block, and the phenomenon of over-crushing of coal after grinding is serious, and the subsequent sorting and processing costs are high.
Description
技术领域technical field
本实用新型涉及一种冲击碾磨机，尤其是一种适用于选煤厂重选中煤碎磨解离的快速冲击碾磨机。The utility model relates to an impact mill, in particular to a rapid impact mill suitable for coal crushing, grinding and dissociation in coal preparation plants.
背景技术Background technique
破碎和磨碎是实现煤炭(包括中煤)高效解离的重要技术手段。对于重选中煤而言，首先必须对中煤进行深度破碎才能使煤矸充分解离，但并不是破碎得越细越好。因为随着粒度的降低，分选难度越大，分选成本也越高。特别是当物料粒度达到0.5mm以下需要采用浮选法分离时，将会显著增加选煤成本。因此，从技术经济的角度，应尽可能在粗粒条件下实现煤炭的高效解离，即在保证煤矸充分解离的同时，避免破碎产品过粉碎。因此，设计开发集冲击和碾磨于一体的中煤高效碎磨解离设备，解决现有煤炭破碎设备破碎粒度下限高，中煤破碎解离效果差，破碎腔易堵塞，以及磨煤设备产品解离效果好，但过粉碎现象严重，后续分选难及处理成本高的问题，可为选煤厂重选中煤高效解离及解离后精煤的回收创造有利条件。Crushing and grinding are important technical means to achieve efficient dissociation of coal (including medium coal). For re-selected coal, the medium coal must first be deeply crushed to fully dissociate the gangue, but the finer the crushing, the better. Because with the reduction of particle size, the difficulty of sorting is greater, and the cost of sorting is also higher. Especially when the particle size of the material reaches below 0.5mm and needs to be separated by flotation, the cost of coal preparation will be significantly increased. Therefore, from a technical and economic point of view, it is necessary to achieve efficient dissociation of coal under coarse-grained conditions, that is, to avoid excessive crushing of crushed products while ensuring sufficient dissociation of coal gangue. Therefore, design and develop medium coal high-efficiency crushing and dissociation equipment integrating impact and grinding to solve the problem of high crushing particle size limit of existing coal crushing equipment, poor crushing and dissociation effect of medium coal, easy blockage of crushing cavity, and coal grinding equipment products. The dissociation effect is good, but the over-crushing phenomenon is serious, the follow-up separation is difficult and the processing cost is high, which can create favorable conditions for the high-efficiency dissociation of re-selected coal in coal preparation plants and the recovery of clean coal after dissociation.
发明内容Contents of the invention
技术问题：本实用新型的目的是针对现有技术中的不足之处，提供一种结构简单、碎磨粒度下限低、过粉碎现象小、不易堵塞、破碎后中煤产品解离效果好的快速冲击碾磨机。Technical problem: The purpose of this utility model is to address the deficiencies in the prior art, to provide a fast crushing machine with simple structure, low lower limit of crushing particle size, small over-crushing phenomenon, not easy to block, and good dissociation effect of medium coal products after crushing. Impact mill.
技术方案：本实用新型的快速冲击碾磨机，包括底座、设在安装底座上的筒式机体和带式传动机构，所述筒式机体的内壁上设有反击块，筒式机体的底部设有敞开式快速出料口，筒式机体的内部设有碎磨辊筒，筒式机体的上部设有进料口，所述碎磨辊筒经联轴器与带式传动机构相连接，碎磨辊筒的辊轴为多棱形辊轴，多棱形辊轴上设有成圆弧轨迹运行的多个弧形碎磨冲击块，碎磨辊筒的中轴线低于筒式机体的中轴线。Technical solution: The rapid impact mill of the present invention includes a base, a cylindrical body on the installation base and a belt transmission mechanism. The inner wall of the cylindrical body is provided with a counter-attack block, and the bottom of the cylindrical body is provided with a There is an open type quick discharge port, the interior of the cylinder body is equipped with a crushing roller, and the upper part of the cylinder body is provided with a feeding port, the crushing roller is connected with the belt transmission mechanism through a coupling, the crushing The roller shaft of the grinding roller is a polygonal roller shaft, and a plurality of arc-shaped crushing and grinding impact blocks running in a circular arc are arranged on the polygonal roller shaft. The central axis of the crushing roller is lower than the central axis of the cylinder body. axis.
所述的弧形碎磨冲击块包括固定冲击块和经高强度螺栓与固定冲击块相连的锯齿型冲击块。The arc crushing impact block includes a fixed impact block and a sawtooth impact block connected with the fixed impact block through high-strength bolts.
所述的弧形碎磨冲击块与筒式机体内壁上的反击块间的间隙由进料口至底部敞开式快速出料口逐步减小。The gap between the arc-shaped crushing impact block and the counter-attack block on the inner wall of the cylinder body gradually decreases from the feed inlet to the bottom open fast discharge outlet.
所述碎磨辊筒的多棱形辊轴为6棱形或8棱形。The polygonal roller shaft of the crushing roller is 6-prism or 8-prism.
所述碎磨辊筒中轴线低于筒式机体中轴线的距离为20-40mm。The distance between the central axis of the crushing roller and the central axis of the cylinder body is 20-40mm.
有益效果：由于采用了上述技术方案，本实用新型碎磨辊筒的中轴线低于筒式机体的中轴线，碎磨辊筒上设有弧形碎磨冲击块，弧形碎磨冲击块与筒式机体内壁反击块间的间隙由进料口至底部敞开式快速出料口逐步减小，进入破碎腔体内的重选中煤在以冲击力和碾磨力作用下，得以高效解离，并经由筒式机体底部设有的敞开式快速出料口及时排出筒式机体外，可有效避免破碎腔的堵塞。与现有技术相比，本实用新型的快速冲击碾磨机结构简单，碎磨粒度下限低，过粉碎现象小，不易堵塞，碎磨后中煤产品解离效果好，有利于实现对中煤中精煤的回收，可有效解决现有煤炭破碎设备破碎粒度下限高，中煤破碎解离效果差，破碎腔易堵塞的问题，以及现有磨煤设备磨后产品过粉碎现象严重，后续分选及处理成本高的问题。Beneficial effects: due to the adoption of the above technical scheme, the central axis of the crushing roller of the utility model is lower than the central axis of the cylindrical body, and the crushing roller is provided with an arc-shaped crushing impact block, which is connected with the arc-shaped crushing impact block. The gap between the impact blocks on the inner wall of the cylinder body gradually decreases from the feed inlet to the bottom open fast discharge outlet. Through the open fast discharge port at the bottom of the barrel body, it is discharged out of the barrel body in time, which can effectively avoid the blockage of the crushing chamber. Compared with the prior art, the rapid impact mill of the utility model has a simple structure, a lower limit of crushing particle size, less over-crushing phenomenon, and is not easy to be blocked. The recovery of medium clean coal can effectively solve the problems that the existing coal crushing equipment has a high crushing particle size limit, the medium coal crushing and dissociation effect is poor, the crushing chamber is easy to block, and the existing coal grinding equipment has serious over-grinding of the product. Select and deal with high cost problems.
附图说明Description of drawings
图1是本实用新型的快速冲击碾磨机结构示意图。Fig. 1 is a structural schematic diagram of the rapid impact mill of the present invention.
图2是本实用新型的碎磨辊筒结构示意图。Fig. 2 is a schematic diagram of the structure of the crushing roller of the present invention.
图中：1－底座，2－筒式机体，3－筒式机体内壁反击块，4－碎磨辊筒，5－弧形碎磨冲击块，6－进料口，7－出料口，8－固定冲击块，9－锯齿型冲击块，10－高强度螺栓。In the figure: 1-base, 2-cylindrical body, 3-impact block on the inner wall of the cylindrical body, 4-crushing roller, 5-arc-shaped crushing impact block, 6-feed inlet, 7-discharge port, 8-fixed impact block, 9-serrated impact block, 10-high-strength bolt.
具体实施方式Detailed ways
下面结合附图对本实用新型的一个实施例作进一步的描述：An embodiment of the present utility model is further described below in conjunction with accompanying drawing:
如图1所示，本实用新型的快速冲击碾磨机，包括底座1、设在安装底座1上的筒式机体2和带式传动机构，所述筒式机体2的内壁上设有反击块3，筒式机体2的底部设有敞开式快速出料口7，筒式机体2的内部设有碎磨辊筒4，筒式机体2的上部设有进料口6，所述碎磨辊筒4经联轴器与带式传动机构相连接，碎磨辊筒4的辊轴为多棱形辊轴，所述碎磨辊筒4的多棱形辊轴为6棱形或8棱形。多棱形辊轴上设有成圆弧轨迹运行的多个弧形碎磨冲击块5，所述的弧形碎磨冲击块5包括固定冲击块8和经高强度螺栓10与固定冲击块8相连的锯齿型冲击块9。碎磨辊筒4的中轴线低于筒式机体2的中轴线20-40mm。所述的弧形碎磨冲击块5与筒式机体2内壁上的反击块3间的间隙由进料口6至底部敞开式快速出料口7逐步减小。As shown in Figure 1, the rapid impact mill of the present invention includes a base 1, a cylindrical body 2 mounted on the installation base 1 and a belt transmission mechanism, and the inner wall of the cylindrical body 2 is provided with an impact block 3. The bottom of the cylindrical body 2 is provided with an open quick discharge port 7, the interior of the cylindrical body 2 is provided with a crushing roller 4, and the upper part of the cylindrical body 2 is provided with a feeding port 6, and the crushing roller The cylinder 4 is connected with the belt transmission mechanism through a coupling, and the roller shaft of the crushing roller 4 is a polygonal roller shaft, and the polygonal roller shaft of the crushing roller 4 is 6-prism or 8-prism . The polygonal roller shaft is provided with a plurality of arc-shaped crushing and grinding impact blocks 5 running in an arc track, and the arc-shaped crushing and grinding impact blocks 5 include fixed impact blocks 8 and high-strength bolts 10 and fixed impact blocks 8 Linked zigzag impact block 9. The central axis of the grinding roller 4 is 20-40mm lower than the central axis of the cylinder body 2 . The gap between the arc-shaped crushing impact block 5 and the impact block 3 on the inner wall of the cylinder body 2 gradually decreases from the feed inlet 6 to the bottom open fast discharge outlet 7 .
如图2所示，碎磨辊筒4的辊轴为6棱形，其断面为正六边型结构，弧形碎磨冲击块5与碎磨辊筒4通过高强度螺栓联接，弧形碎磨冲击块5由固定冲击块8和锯齿型冲击块9组成，并通过高强度螺栓10连接。As shown in Figure 2, the roller shaft of the crushing and grinding roller 4 is 6 prisms, and its cross-section is a regular hexagonal structure. The impact block 5 is composed of a fixed impact block 8 and a saw-tooth impact block 9, which are connected by high-strength bolts 10.
破碎过程如下：将需破碎的物料给入冲击碾磨机，物料在进料口4过程中和物料在弧形碎磨冲击块5和反击块3冲击作用下得以粗碎，经过粗碎后的物料进入筒式机体2的破碎腔内，在弧形碎磨冲击块5和筒式机体内壁上反击块3冲击碾磨作用下被碎磨，碎磨后的物料经过筒式机体底部敞开式快速出料口7及时排出筒式机体外。The crushing process is as follows: the material to be crushed is fed into the impact mill, and the material is coarsely crushed in the process of the feed port 4 and under the impact of the arc crushing impact block 5 and the impact block 3. The material enters the crushing cavity of the cylindrical body 2, and is crushed under the impact and grinding action of the arc-shaped crushing impact block 5 and the impact block 3 on the inner wall of the cylindrical body, and the crushed material passes through the open bottom of the cylindrical body The discharge port 7 is promptly discharged outside the barrel body.
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| CN107469938A (en) * | 2017-09-08 | 2017-12-15 | 中国矿业大学 | A kind of quick washing grinding mill |
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| CN107469938A (en) * | 2017-09-08 | 2017-12-15 | 中国矿业大学 | A kind of quick washing grinding mill |
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