CN109779628B - External High Pressure Spraying Automatic Dust Reduction Device for Coal Shearer - Google Patents
External High Pressure Spraying Automatic Dust Reduction Device for Coal Shearer Download PDFInfo
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- CN109779628B CN109779628B CN201910214298.9A CN201910214298A CN109779628B CN 109779628 B CN109779628 B CN 109779628B CN 201910214298 A CN201910214298 A CN 201910214298A CN 109779628 B CN109779628 B CN 109779628B
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- 239000003245 coal Substances 0.000 title claims abstract description 27
- 239000000428 dust Substances 0.000 title claims abstract description 18
- 238000005507 spraying Methods 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- 239000002817 coal dust Substances 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000001629 suppression Effects 0.000 claims description 7
- 239000013049 sediment Substances 0.000 claims description 6
- 238000005065 mining Methods 0.000 abstract description 14
- 239000003595 mist Substances 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 230000001502 supplementing effect Effects 0.000 abstract 2
- 239000012535 impurity Substances 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
Description
技术领域technical field
本发明涉及采煤机降尘装置，具体是一种采煤机外置式高压喷雾自动降尘装置。The invention relates to a coal mining machine dust suppression device, in particular to an external high-pressure spray automatic dust suppression device for a coal mining machine.
背景技术Background technique
煤矿开采过程中会产生大量煤尘，当井下空气中飞扬的煤尘达到一定浓度时，会发生猛烈的爆炸，给工人人身安全造成严重的威胁，煤矿生产中85%的粉尘产自采掘工作面。目前，采煤机工作面的灭尘、降尘措施常见为内喷雾式，一般采煤机的喷雾系统和水冷系统是合为一体的，水进入机组总水门后，一路经减压后进入电机冷却器，另一路进入牵引部冷却器，然后分供内喷雾系统，喷雾效果与供水压力有一定的关系，供水压力不能小于一定值，否则达不到雾化效果。而电动机的耐水压力一般不超过 2.2 MPa，这也造成了采煤机冷却和喷嘴雾化的矛盾。因此由于喷雾压力低，以及采煤时风流受到采煤机的阻碍，前滚筒的高速旋转和逆风喷雾的原因，在采煤机前端产生强烈的涡流，使大量高浓度含尘气流扩散到采煤机司机的作业空间，给煤机司机和下风流作业的人员造成严重危害。A large amount of coal dust will be produced in the process of coal mining. When the flying coal dust in the underground air reaches a certain concentration, a violent explosion will occur, posing a serious threat to the personal safety of workers. 85% of the dust in coal mine production is produced from the mining face . At present, the dust removal and dust suppression measures on the working face of the coal mining machine are usually internal spraying. Generally, the spraying system and the water cooling system of the coal mining machine are integrated. The other way enters the cooler of the traction section, and then supplies the internal spray system. The spray effect has a certain relationship with the water supply pressure. The water supply pressure cannot be less than a certain value, otherwise the atomization effect will not be achieved. The water resistance pressure of the motor generally does not exceed 2.2 MPa, which also causes the contradiction between the cooling of the shearer and the atomization of the nozzle. Therefore, due to the low spray pressure, and the obstruction of the wind flow by the shearer during coal mining, the high-speed rotation of the front drum and the headwind spray, a strong vortex is generated at the front end of the shearer, causing a large amount of high-concentration dust-laden air to diffuse to the coal. The working space of the driver of the coal mine will cause serious harm to the driver of the coal mine and the personnel working in the downwind.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种采煤机外置式高压喷雾自动降尘装置，用于煤矿井下各种类型滚筒采煤机的高效降尘。The technical problem to be solved by the present invention is to provide an external high-pressure spray automatic dust suppression device for coal mining machines, which is used for efficient dust suppression of various types of drum shearers in coal mines.
本发明解决其技术问题采用的技术方案是：The technical scheme that the present invention solves its technical problem adopts is:
一种采煤机外置式高压喷雾自动降尘装置，包括补水箱、高压水泵、高压水管道、高压喷嘴，高压水泵连接补水箱，高压水泵设有变频控制器；采煤机的滚筒后方设有半圆型高压喷雾器，高压水泵通过高压水管道连接所述的半圆型高压喷雾器，半圆型高压喷雾器上设有多个多角度高压喷嘴，多个多角度高压喷嘴喷出的高压水雾在滚筒周围形成半圆型高压水墙。An external high-pressure spray automatic dust suppression device for a coal mining machine, including a water supply tank, a high-pressure water pump, a high-pressure water pipeline, and a high-pressure nozzle. The high-pressure water pump is connected to the water supply tank, and the high-pressure water pump is provided with a frequency conversion controller; High-pressure sprayer, the high-pressure water pump is connected to the semi-circular high-pressure sprayer through a high-pressure water pipe, and the semi-circular high-pressure sprayer is equipped with multiple multi-angle high-pressure nozzles, and the high-pressure water mist sprayed by multiple multi-angle high-pressure nozzles forms a semicircle around the drum. Type high pressure water wall.
采用上述技术方案的本发明，与现有技术相比，有益效果是：Adopt the present invention of above-mentioned technical scheme, compared with prior art, beneficial effect is:
本发明利用高压水泵将水加压，经高压管路送至半圆型高压喷雾器上的喷嘴喷出雾化，高压水雾化后形成半圆形高压水墙包裹在采煤机的两个滚筒上方，从而有效阻止了煤尘的飞扬，使割煤工序和司机位粉尘浓度大幅降低；半圆型高压喷雾器适合我国煤矿井下各种类型的滚筒采煤机，均可达到高效降尘。The invention utilizes a high-pressure water pump to pressurize the water, and sends it to the nozzle on the semicircular high-pressure sprayer through the high-pressure pipeline to spray and atomize. After the high-pressure water is atomized, a semicircular high-pressure water wall is formed and wrapped above the two drums of the shearer. , so as to effectively prevent the flying of coal dust, so that the coal cutting process and the driver's dust concentration are greatly reduced; the semi-circular high-pressure sprayer is suitable for various types of drum shearers in coal mines in my country, and can achieve high-efficiency dust reduction.
进一步的，本发明的优选方案是：Further, the preferred version of the present invention is:
补水箱设有自动补水阀，矿井水通过自动补水阀进入补水箱；补水箱内设有均水器、泥沙阻档板、过滤罩，均水器连接自动补水阀，泥沙阻档板为多级设置，过滤罩连接在高压水泵的进水管端口。The replenishment tank is equipped with an automatic replenishment valve, and the mine water enters the replenishment tank through the automatic replenishment valve; the water replenishment tank is equipped with a water equalizer, a sediment blocking plate, and a filter cover. The water equalizer is connected to the automatic replenishment valve, and the sediment blocking plate is Multi-stage setting, the filter cover is connected to the inlet pipe port of the high-pressure water pump.
高压水管路包括高压软管、金属高压管、可挠动金属高压管，金属高压管固定在采煤机本体上，金属高压管通过高压软管与高压水泵连接；可挠动金属高压管一端连接金属高压管，另一端连接半圆型高压喷雾器。The high-pressure water pipeline includes a high-pressure hose, a metal high-pressure pipe, and a flexible metal high-pressure pipe. The metal high-pressure pipe is fixed on the shearer body, and the metal high-pressure pipe is connected to the high-pressure water pump through a high-pressure hose; one end of the flexible metal high-pressure pipe is connected to the Metal high-pressure tube, the other end is connected to a semi-circular high-pressure sprayer.
采煤机的滚筒后方设有煤尘检测传感器，半圆型高压喷雾器的进水端设有水压检测传感器，煤尘检测传感器和水压检测传感器分别与高压水泵的变频控制器电连接。A coal dust detection sensor is provided behind the drum of the shearer, and a water pressure detection sensor is provided at the water inlet of the semicircular high-pressure sprayer. The coal dust detection sensor and the water pressure detection sensor are respectively electrically connected to the frequency conversion controller of the high-pressure water pump.
附图说明Description of drawings
图1是本发明实施例的结构示意图；Fig. 1 is the structural representation of the embodiment of the present invention;
图2是半圆型雾化高压水墙示意图；Fig. 2 is a schematic diagram of a semicircular atomized high-pressure water wall;
图中：1-补水箱；2-自动补水阀；3-均水管；4-泥沙阻档板；5-过滤罩；6-高压水泵；7-变频控制器；8-高压软管；9-金属高压管；10-可挠动金属高压管；11-半圆型高压喷雾器；12-水压检测传感器；13-高压喷嘴；14-煤尘检测传感器；15-半圆型雾化高压水墙；16-采煤机；17-滚筒。In the figure: 1-refill water tank; 2-automatic refill valve; 3-uniform water pipe; 4-sediment blocking plate; 5-filter cover; 6-high pressure water pump; 7-frequency conversion controller; 8-high pressure hose; 9 -Metal high-pressure pipe; 10-flexible metal high-pressure pipe; 11-semicircular high-pressure sprayer; 12-water pressure detection sensor; 13-high pressure nozzle; 14-coal dust detection sensor; 15-semicircular atomization high-pressure water wall; 16-shearer; 17-roller.
具体实施方式Detailed ways
以下参照附图及实施例详述本发明。The present invention will be described in detail below with reference to the accompanying drawings and examples.
参见图1，一种采煤机外置高压喷雾降尘自动控制装置，由补水箱1、高压水泵6、变频控制器7、半圆型高压喷雾器11、水压检测传感器12、煤尘检测传感器14及高压水管道组成，半圆型高压喷雾器11设置在采煤机16的滚筒17后方，其上设有多个多角度的高压喷嘴13，多个高压喷嘴13按不同角度安装在半圆型高压喷雾器11的上面，使喷出的高压水雾可以在滚筒17周围形成一尺厚的半圆型高压水墙15（见图2），半圆型高压水墙15包裹在滚筒17周围，达到强制降尘效果。并且，半圆型高压喷雾器11安装在滚筒17后面，并不影响采煤机16及其它设备的运行。Referring to Fig. 1, an external high-pressure spray dust-reduction automatic control device for a coal mining machine is composed of a water supply tank 1, a high-pressure water pump 6, a frequency conversion controller 7, a semicircular high-pressure sprayer 11, a water pressure detection sensor 12, a coal dust detection sensor 14 and Composed of high-pressure water pipelines, the semicircular high-pressure sprayer 11 is arranged behind the drum 17 of the coal shearer 16, and a plurality of multi-angle high-pressure nozzles 13 are arranged on it. Above, the sprayed high-pressure water mist can form a foot-thick semicircular high-pressure water wall 15 (see Figure 2) around the drum 17, and the semicircular high-pressure water wall 15 is wrapped around the drum 17 to achieve the effect of forced dust reduction. Moreover, the semicircular high-pressure sprayer 11 is installed behind the drum 17 and does not affect the operation of the shearer 16 and other equipment.
补水箱1的进水管上装有自动补水阀2，矿井水通过自动补水阀2进入补水箱1，自动补水阀2始终保护水箱中液位达到最佳水位；补水箱1内设有均水器3、泥沙阻档板4、过滤罩5，均水器3连接进水管，均水管3使补水箱1内的水保持液面平稳不波动，保护液面平稳上升或下降，必免进水时矿井水中的泥沙等杂质出现二次扬起。泥沙阻档板4为三级设置，泥沙阻档板4把矿井水中的泥沙分三拦截阻档，它属于初级粗过滤，主要是拦截大粒泥沙和其它杂质，它是阻档泥沙随水的波动而漂移，目的是为高压水泵6提供含杂质最少的干净水源，有效降低高压喷嘴13阻塞的机率。过滤罩5连接在高压水泵6的进水管端口，过滤罩5是最后一级精细过滤，凡是越过泥沙阻档板4的杂质最后都被过滤罩5过滤掉。The water inlet pipe of the water replenishment tank 1 is equipped with an automatic water replenishment valve 2, and the mine water enters the water replenishment tank 1 through the automatic water replenishment valve 2, and the automatic water replenishment valve 2 always protects the liquid level in the water tank to reach the optimum water level; the water replenishment tank 1 is equipped with a water equalizer 3 , silt blocking baffle 4, filter cover 5, water equalizer 3 is connected to the water inlet pipe, and the water equalizer 3 keeps the water in the water replenishment tank 1 stable and does not fluctuate, and protects the liquid level from rising or falling steadily, so as to avoid water inflow Sediment and other impurities in the mine water appear secondary rise. The silt blocking baffle 4 is a three-level setting. The silt blocking baffle 4 divides the silt in the mine water into three interception blocks. It belongs to the primary coarse filter and mainly intercepts large grains of silt and other impurities. It is a block mud The sand drifts with the fluctuation of the water, and the purpose is to provide the clean water source with the least impurities for the high-pressure water pump 6 and effectively reduce the probability of high-pressure nozzle 13 being blocked. The filter cover 5 is connected to the inlet pipe port of the high-pressure water pump 6, and the filter cover 5 is the last stage of fine filtration, and all impurities that cross the silt blocking plate 4 are finally filtered out by the filter cover 5.
高压水管路包括三段，分别是高压软管8、金属高压管9、可挠动金属高压管10，金属高压管9固定在采煤机本体上，金属高压管9通过高压软管8与高压水泵6连接；可挠动金属高压管10一端连接金属高压管9，另一端连接半圆型高压喷雾器11，可挠动金属高压管10随着采煤机的摆臂上下摆动，为半圆型高压喷雾器11提供高压水源。高压水泵6、高压软管8、金属高压管9、可挠动金属高压管10、半圆型高压喷雾器11和高压喷嘴13组成了密闭的高压管道，从高压水泵6出来的高压水经管道传输至高压喷嘴13，最后经喷嘴组喷出一尺厚的半圆型高压水墙15。The high-pressure water pipeline includes three sections, which are high-pressure hose 8, metal high-pressure pipe 9, and flexible metal high-pressure pipe 10. The metal high-pressure pipe 9 is fixed on the shearer body, and the metal high-pressure pipe 9 is connected to the high-pressure The water pump 6 is connected; one end of the flexible metal high-pressure pipe 10 is connected to the metal high-pressure pipe 9, and the other end is connected to the semicircular high-pressure sprayer 11. The flexible metal high-pressure pipe 10 swings up and down with the swing arm of the shearer to form a semicircular high-pressure sprayer. 11 provide high pressure water source. High-pressure water pump 6, high-pressure hose 8, metal high-pressure pipe 9, flexible metal high-pressure pipe 10, semicircular high-pressure sprayer 11 and high-pressure nozzle 13 form a closed high-pressure pipeline, and the high-pressure water from high-pressure water pump 6 is transmitted to High-pressure nozzle 13, finally spray the thick semicircle type high-pressure water wall 15 of one foot through nozzle group.
采煤机16的滚筒17后方设有煤尘检测传感器14，半圆型高压喷雾器11的进水端设有水压检测传感器12，煤尘检测传感器14和水压检测传感器12分别与高压水泵6的变频控制器7电连接。煤尘检测传感器 14主要是在采煤时检测滚筒17周围煤尘的浓度，然后将浓度变化反馈至变频控制器7，当检测到煤尘浓度低时通过变频控制器7自动调低供水水压，当检测到煤尘浓度高时通过变频控制器7自动调高供水水压，从而使水压自动跟随煤尘浓度变化并达到自动节能降尘。水压检测传感器 12 实时检测半圆型高压喷雾器11上的压力，当水压达到设定值时（上限值）时系统发出报警信号，提醒人员高压喷嘴13有堵塞现象，需要及时清理。高压水泵6通过变频控制器7控制转速，使高压管道保护在一定的恒定压力下，实现自动恒压控制。Coal dust detection sensor 14 is arranged at the rear of drum 17 of coal shearer 16, and the water inlet end of semicircle type high-pressure sprayer 11 is provided with water pressure detection sensor 12, and coal dust detection sensor 14 and water pressure detection sensor 12 are connected with high-pressure water pump 6 respectively. The frequency conversion controller 7 is electrically connected. The coal dust detection sensor 14 mainly detects the concentration of coal dust around the drum 17 during coal mining, and then feeds back the concentration change to the frequency conversion controller 7, and automatically lowers the water supply pressure through the frequency conversion controller 7 when the concentration of coal dust is detected to be low , when the coal dust concentration is detected to be high, the water supply pressure is automatically increased by the frequency conversion controller 7, so that the water pressure automatically follows the change of the coal dust concentration and achieves automatic energy saving and dust reduction. The water pressure detection sensor 12 detects the pressure on the semicircular high-pressure sprayer 11 in real time. When the water pressure reaches the set value (upper limit), the system sends an alarm signal to remind personnel that the high-pressure nozzle 13 is clogged and needs to be cleaned in time. The high-pressure water pump 6 controls the rotational speed through the frequency conversion controller 7, so that the high-pressure pipeline is protected at a certain constant pressure, and automatic constant pressure control is realized.
整套电气控制系统通过各种传感器对降尘实现自动闭环控制和自动报警，无需人工干预。The entire electrical control system realizes automatic closed-loop control and automatic alarm for dust reduction through various sensors without manual intervention.
以上所述仅为本发明较佳可行的实施例而已，并非因此局限本发明的权利范围，凡运用本发明说明书及附图内容所作的等效结构变化，均包含于本发明的权利范围之内。The above description is only a preferable feasible embodiment of the present invention, and does not therefore limit the scope of rights of the present invention. All equivalent structural changes made by using the description of the present invention and the contents of the accompanying drawings are included in the scope of rights of the present invention. .
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| CN111157410A (en) * | 2020-01-15 | 2020-05-15 | 武汉碧海云天科技股份有限公司 | Nozzle spray particle size detection device |
| CN114961830A (en) * | 2022-06-02 | 2022-08-30 | 常熟市易安达电器有限公司 | Underground mine utensil possesses spraying dust fall system of online monitor function |
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| WO2008020773A1 (en) * | 2006-08-13 | 2008-02-21 | Krysztof Karazniewicz | Injection sprayer and injection sprayer seat |
| CN202483574U (en) * | 2012-03-19 | 2012-10-10 | 邹城兖矿泰德工贸有限公司 | Secondary negative pressure dust settling device of coal mining machine |
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