WO2017020519A1 - 一种前混合磨料水射流联合截齿式采煤机滚筒 - Google Patents

一种前混合磨料水射流联合截齿式采煤机滚筒 Download PDF

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WO2017020519A1
WO2017020519A1 PCT/CN2015/099347 CN2015099347W WO2017020519A1 WO 2017020519 A1 WO2017020519 A1 WO 2017020519A1 CN 2015099347 W CN2015099347 W CN 2015099347W WO 2017020519 A1 WO2017020519 A1 WO 2017020519A1
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nozzle
core sleeve
flow channel
cylinder
sleeve
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PCT/CN2015/099347
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English (en)
French (fr)
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郭楚文
王凤超
江红祥
李芳兵
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中国矿业大学
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Publication of WO2017020519A1 publication Critical patent/WO2017020519A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
    • E21C25/10—Rods; Drums

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  • the invention relates to a pre-mixed abrasive water jet combined with a pick-type shearer drum, which is particularly suitable for mining with thin coal seams.
  • China's thin coal seam mining mainly uses drum type coal mining machine, relying on the picks mounted on the drum to interact with the coal wall for coal mining, but it is difficult to overcome the contradiction of "small fuselage, high power" in a small space.
  • the thin coal seam with pinch is greatly reduced in mining efficiency, and the picks on the drum are easily worn and the life is reduced.
  • the existing water jet assisted cutting head rock breaking technology adopts pure water jet, and the cutting ability of the pure water jet is weak, and the mining effect of the thin coal seam containing the clip is not obvious, and can only meet the working demand of the spray dust reduction.
  • the pre-mixed abrasive water jet is a new type of hard rock cutting tool. It has the characteristics of low working pressure, strong cutting ability and adaptability to dangerous environment. It has been applied to various hard material cutting, crushing and machining. Therefore, the use of pre-mixed abrasive water jet combined with tools for cutting thin coal seams can achieve safe and efficient mining of thin coal seams. In order to effectively solve the contradiction between the "small fuselage and high power" of coal mining equipment and reduce the wear of cutting tools, it is urgent to study a pre-mixed abrasive water jet combined with a pick-type shearer drum with a reasonable arrangement of nozzles and runners.
  • the object of the present invention is to overcome the deficiencies in the prior art and to provide a pre-mixed abrasive water jet combined with a pick-up shearer drum, which utilizes abrasive jet combined picks by reasonably arranging nozzles and runners Breaking the rock, solving the contradiction between the "small fuselage and high power" of the thin coal seam coal mining equipment, thereby improving the coal mining efficiency of the thin coal seam with the pinch and reducing the wear of the cutting tool.
  • a pre-mixed abrasive water jet combined with a pick-type shearer drum comprising a cutting shaft, a cylinder and a pick provided on the cylinder, wherein the cylinder body is provided with a core sleeve fixed on the cutting shaft, The cylinder sleeve is sleeved on the outer circumference of the core sleeve, and the front and rear ends are respectively provided with openings, and the inner cavity of the cylinder body is provided with holes respectively matched with the shoulder sleeves of the core sleeve and the cutting shaft, and the opening of the front end of the cylinder body and the core sleeve The end surface is flush, the cutting shaft is matched with the inner cavity of the core sleeve, and the shoulder end surface of the cutting shaft is flush with the opening position of the rear end of the cylinder; the cylinder is interposed between the cutting teeth a plurality of nozzle assemblies distributed on the outer circumference of the cylinder in a spiral form;
  • the nozzle assembly includes a nozzle holder, a housing, a sleeve and a nozzle, and the nozzle holder is provided with a nozzle seat flow passage communicating with the nozzle, the sleeve is disposed in the housing, and the housing is fixed at the nozzle The sleeve is connected to the nozzle seat flow passage and the nozzle;
  • the cutting shaft is provided with a water inlet hole, a main flow channel and a plurality of water outlet holes, wherein the main flow channel is disposed inside the cutting shaft, and one end of the water inlet hole is connected to the other end of the high pressure water source and communicates with the main flow channel.
  • the core sleeve is provided with a bolt hole core sleeve flow passage communicating with a plurality of water outlet holes on the cutting shaft, and the other end of the plurality of water outlet holes is in communication with the main flow passage;
  • the cylinder body is provided with a bolt hole type cylinder flow passage communicating with the nozzle seat flow passages of the plurality of nozzle assemblies, and the bolt hole type cylinder flow passage and the bolt hole core sleeve flow passage are connected by the high pressure hose.
  • the high-pressure hose has its own threaded joint at both ends, and the high-pressure hose is respectively connected with the bolt-hole cylinder flow passage and the bolt-hole core sleeve flow passage by using the threaded joint.
  • the core sleeve is welded to both ends of the barrel body; the nozzle holder and the housing are screwed together, and the nozzle is in an interference fit with the housing; between the cutting shaft and the core sleeve There are multiple leak-proof seals.
  • the present invention Since the above technical solution is adopted, the present invention has the following advantages compared with the prior art:
  • the device of the invention ingeniously arranges the nozzles, arranges the flow channels reasonably, and realizes the combined abrasive cutting of the abrasive jets;
  • the device can effectively solve the contradiction of “small fuselage and high power” in a small space in thin coal seam mining
  • the device can improve the mining efficiency of thin coal seam and reduce tool wear.
  • Figure 1 is a structural view of the abrasive water jet combined cutter type shearer drum of the present invention
  • Figure 2 is a view of the A-A of Figure 1;
  • Figure 3 is a structural view of the showerhead assembly of the present invention.
  • Figure 1 shows the front mixed abrasive water jet combined with a pick-type shearer drum of the present invention, mainly consisting of a cutting shaft 1, a cylinder 2, a core sleeve 3, a nozzle assembly 4, a pick 5, a threaded joint 6 and The high pressure hose 7 is constructed.
  • the barrel 2, the core sleeve 3, the nozzle assembly 4, and the pick 5 are all welded, and the cutting shaft 1 is connected to the core sleeve 3 through a spline to drive the entire cutting head to work.
  • a plurality of watertight seals 8 are provided between the core sleeve 3 and the core sleeve 3.
  • the core 2 is provided with a core sleeve 3 fixed on the cutting shaft 1, and the core sleeve 3 is welded to both ends of the inner cavity of the cylinder 2.
  • the cylinder 2 is sleeved on the outer circumference of the core sleeve 3, and the front and rear ends are respectively provided with openings.
  • the inner cavity of the cylinder body 2 is provided with holes respectively matched with the core sleeve 3 and the shoulder of the cutting shaft 1, and the cylinder body 2 is respectively The opening of the front end is flush with the end surface of the core sleeve 3, the cutting shaft 1 is engaged with the inner cavity of the core sleeve 3, and the shoulder end surface of the cutting shaft 1 is flush with the opening position of the rear end of the cylinder 2;
  • the cylinder 2 is provided with a plurality of nozzle assemblies 4 interposed between the picks 5 and distributed in a spiral form on the outer circumference of the cylinder 2;
  • the nozzle assembly 4 includes a nozzle holder 4-1, a housing 4-2, a sleeve 4-3, and a nozzle 4-4.
  • the nozzle holder 4-1 is provided with a nozzle. 4-4 communicating nozzle seat flow path 4-5, said sleeve 4-3 is disposed in the housing 4-2, and the housing 4-2 is fixed on the nozzle holder 4-1, the sleeve 4 -3 is connected to the nozzle holder flow path 4-5 and the nozzle 4-4; the nozzle holder 4-1 and the housing 4-2 are screwed together, and the nozzle 4-4 and the housing 4-2 are connected There is an interference fit.
  • the cutting shaft 1 is provided with a water inlet hole 1-1, a main flow channel 1-2 and a plurality of water outlet holes 1-3, and the main flow channel 1-2 is disposed inside the cutting shaft 1, the water inlet hole One end of the 1-1 is connected to the other end of the high-pressure water source and communicates with the main flow channel 1-2.
  • the core sleeve 3 is provided with a bolt-hole core sleeve flow channel 3 communicating with the plurality of water outlet holes 1-3 of the cutting shaft 1. -1, said The other ends of the plurality of water outlet holes 1-3 are in communication with the main flow channel 1-2;
  • the cylinder body 2 is provided with a bolt hole type cylinder flow passage 2-1 which communicates with the nozzle seat flow passages 4-5 of the plurality of nozzle assemblies 4, and the bolt hole type cylinder flow passage 2-1 and the bolt hole type
  • the core sleeve flow passage 3-1 is connected by a high-pressure hose 7 which has a threaded joint 6 at both ends thereof, and the high-pressure hose 7 utilizes a threaded joint 6 and a bolt-hole cylinder flow passage 2-1 and The bolt hole core sleeve flow passage 3-1 is connected.
  • the water outlet holes 1-3 located on the cutting shaft 1 are symmetrically distributed, and four water outlet holes are evenly distributed along the circumference of the cutting shaft 1 at each position, respectively, and four bolt-hole core sleeve flow passages 3-1.
  • a corresponding communication is connected to the four high-pressure hoses 7 via a threaded joint 6.
  • the front end of the cylindrical body 2 is uniformly provided with four screw holes, and the casing 4-2 including the sleeve 4-3 and the nozzle 4-4 is connected.
  • the water and the abrasive enter the main channel 1-2 through the water inlet hole 1-1, pass through the core hole flow path 3-1 through the water outlet hole 1-3, and then flow into the cylinder flow path 2-1 through the high pressure hose 7, and then flow into the nozzle main In 4, in the nozzle assembly 4, through the nozzle seat flow channel 4-5, the sleeve 4-3 enters the nozzle 4-4, forming a high-pressure abrasive water jet, and the joint picking breaks the rock.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

一种前混合磨料水射流联合截齿式采煤机滚筒，包括截割轴（1）、筒体（2）、高压软管（7）、截齿（5）、喷头总成（4）和芯套（3），筒体（2）套接在芯套（3）外周；截割轴（1）套接在芯套（3）内部相匹配的内腔中带动截割头运动；高压软管（7）的两端分别螺纹连接芯套（3）和筒体（2）；喷头总成（4）内部设有喷嘴座流道（4-5）、套管（4-3）和喷嘴（4-4）；截割轴（1）上设有入水孔（1-1）、主流道（1-2）和出水孔（1-3），入水孔（1-1）一端接高压水源，另一端与主流道（1-2）连通，出水孔（1-3）一端接主流道（1-2），另一端与芯套流道（3-1）连通，筒体（2）上设置有筒体流道（2-1）。水和磨料的混合物经入水孔（1-1）进入主流道（1-2），经出水孔（1-3）通过芯套流道（3-1），进而经高压软管（7）流入筒体流道（2-1），然后流入喷头总成（4）内，在喷头总成（4）内先后经过喷嘴座流道（4-5）、套管（4-3）进入喷嘴（4-4），形成高压磨料水射流。该滚筒能有效提高薄煤层开采效率，降低刀具磨损。

Description

一种前混合磨料水射流联合截齿式采煤机滚筒 技术领域
本发明涉及一种前混合磨料水射流联合截齿式采煤机滚筒，特别适用于含夹矸薄煤层的开采。
背景技术
目前，我国薄煤层开采主要使用滚筒式采煤机，依靠安装在滚筒上的截齿与煤壁作用进行采煤，但在狭小空间内难以克服“小机身、大功率”的矛盾，遇到含夹矸的薄煤层，开采效率会大大降低，而且滚筒上的截齿易被磨损，寿命减小。已有的水射流辅助截割头破岩技术采用纯水射流，纯水射流的截割能力较弱，对于含夹矸薄煤层的开采效果不明显，只能满足喷雾降尘的工作需求。
前混合磨料水射流是一种新型的硬岩截割工具，具有工作压力低、切割能力强、适应危险环境作业等特点，已应用于各种坚硬材料切割、粉碎、机械加工等领域。因此，利用前混合磨料水射流联合刀具进行截割薄煤层，可实现薄煤层的安全高效开采。为有效解决采煤装备“小机身、大功率”的矛盾，降低截割刀具的磨损，迫切需要研究一种喷嘴和流道合理布置的前混合磨料水射流联合截齿式采煤机滚筒。
发明内容
技术问题：本发明的目的是克服已有技术中的不足之处，提供一种前混合磨料水射流联合截齿式采煤机滚筒，通过合理地布置喷嘴和流道，运用磨料射流联合截齿破岩，解决薄煤层采煤设备“小机身、大功率”的矛盾，从而提高含夹矸薄煤层的采煤效率，降低截割刀具的磨损。
技术方案：为实现上述目的，本发明解决技术问题所采用的技术方案：
一种前混合磨料水射流联合截齿式采煤机滚筒，包括截割轴、筒体和设在筒体上的截齿,所述的筒体内设有固定在截割轴上的芯套，筒体套接在芯套外周，前后两端均设有开口，筒体的内腔设有与芯套和截割轴的轴肩分别相匹配的孔，所述筒体前端的开口与芯套的端面位置齐平，所述的截割轴与芯套内腔配合，且截割轴的轴肩端面与筒体后端的开口位置平齐；所述的筒体上设有间插在截齿之间、以螺旋线形式分布在筒体外圆周上的多个喷头总成；
所述的喷头总成包括喷嘴座、壳体、套管和喷嘴，所述的喷嘴座上设有与喷嘴相通的喷嘴座流道，所述的套管设在壳体内，壳体固定在喷嘴座上，所述的套管连接喷嘴座流道和喷嘴；
所述截割轴上设有入水孔、主流道和多个出水孔，所述的主流道设置在截割轴内部，所述的入水孔一端接高压水源另一端与主流道连通，所述的芯套上设有与截割轴上多个出水孔相连通的螺栓孔式芯套流道，所述多个出水孔的另一端与主流道连通；
所述筒体上设有与多个喷头总成的喷嘴座流道相通的螺栓孔式筒体流道，螺栓孔式筒体流道与螺栓孔式芯套流道经高压软管连通，所述的高压软管两端自带螺纹接头，高压软管利用螺纹接头分别与螺栓孔式筒体流道和螺栓孔式芯套流道相连接。
所述芯套焊接在筒体内腔的两端；所述的喷嘴座和壳体之间螺纹连接，所述的喷嘴)和壳体之间过盈配合；所述截割轴和芯套之间设有多个防漏水的密封圈。
有益效果：由于采用了上述技术方案，本发明与现有技术相比具有如下优点：
(1)将前混合磨料水射流引入到薄煤层开采中，提供了一种薄煤层开采的新方法；
(2)本发明装置巧妙的布置喷嘴，合理安排流道，实现了磨料射流联合截齿破岩；
(3)本装置可有效解决薄煤层开采中狭小空间内“小机身、大功率”的矛盾；
(4)本装置可提高薄煤层开采效率，降低刀具磨损。
附图说明
图1是本发明磨料水射流联合截齿式采煤机滚筒结构图；
图2是图1的A-A视图；
图3是本发明的喷头总成结构图。
具体实施方式
下面结合附图对本发明的实施例作进一步的描述：
图1所示，本发明的前混合磨料水射流联合截齿式采煤机滚筒，主要由截割轴1、筒体2、芯套3、喷头总成4，截齿5，螺纹接头6和高压软管7构成。所述筒体2、芯套3、喷头总成4、截齿5之间均为焊接连接，截割轴1通过花键与芯套3连接，带动整个截割头工作，所的截割轴1和芯套3之间设有多个防漏水的密封圈8。所述的筒体2内设有固定在截割轴1上的芯套3，芯套3焊接在筒体2内腔的两端。筒体2套接在芯套3外周，前后两端均设有开口，筒体2的内腔设有与芯套3和截割轴1的轴肩分别相匹配的孔，所述筒体2前端的开口与芯套3的端面位置齐平，所述的截割轴1与芯套3内腔配合，且截割轴1的轴肩端面与筒体2后端的开口位置平齐；所述的筒体2上设有间插在截齿5之间、以螺旋线形式分布在筒体2外圆周上的多个喷头总成4；
如图3所示，所述的喷头总成4包括喷嘴座4-1、壳体4-2、套管4-3和喷嘴4-4，所述的喷嘴座4-1上设有与喷嘴4-4相通的喷嘴座流道4-5，所述的套管4-3设在壳体4-2内，壳体4-2固定在喷嘴座4-1上，所述的套管4-3连接喷嘴座流道4-5和喷嘴4-4；所述的喷嘴座4-1和壳体4-2之间为螺纹连接，所述的喷嘴4-4和壳体4-2之间为过盈配合。
所述截割轴1上设有入水孔1-1、主流道1-2和多个出水孔1-3，所述的主流道1-2设置在截割轴1内部，所述的入水孔1-1一端接高压水源另一端与主流道1-2连通，所述的芯套3上设有与截割轴1上多个出水孔1-3相连通的螺栓孔式芯套流道3-1，所述 多个出水孔1-3的另一端与主流道1-2连通；
所述筒体2上设有与多个喷头总成4的喷嘴座流道4-5相通的螺栓孔式筒体流道2-1，螺栓孔式筒体流道2-1与螺栓孔式芯套流道3-1经高压软管7连通，所述的高压软管7两端自带螺纹接头6，高压软管7利用螺纹接头6分别与螺栓孔式筒体流道2-1和螺栓孔式芯套流道3-1相连接。
图2所示，位于截割轴1上的出水孔1-3对称分布，每处沿截割轴1圆周均匀分布四道出水孔，分别与四道螺栓孔式芯套流道3-1一一对应连通，进而通过螺纹接头6与四根高压软管7连接。
所述筒体2的前端外周均匀地开有四个螺纹孔，连接包含套管4-3和喷嘴4-4的壳体4-2。
水和磨料经入水孔1-1进入主流道1-2，经出水孔1-3通过芯套流道3-1，进而经高压软管7流入筒体流道2-1，然后流入喷头总成4内，在喷头总成4内先后经过喷嘴座流道4-5、套管4-3进入喷嘴4-4，形成高压磨料水射流，联合截齿破岩。
以上所述仅是本发明的优选实施方式，应当指出：对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (4)

  1. 一种前混合磨料水射流联合截齿式采煤机滚筒，包括截割轴(1)、筒体(2)和设在筒体(2)上的截齿(5)，其特征在于：所述的筒体(2)内设有固定在截割轴(1)上的芯套(3)，筒体(2)套接在芯套(3)外周，前后两端均设有开口，筒体(2)的内腔设有与芯套(3)和截割轴(1)的轴肩分别相匹配的孔，所述筒体(2)前端的开口与芯套(3)的端面位置齐平，所述的截割轴(1)与芯套(3)内腔配合，且截割轴(1)的轴肩端面与筒体(2)后端的开口位置平齐；所述的筒体(2)上设有间插在截齿(5)之间、以螺旋线形式分布在筒体(2)外圆周上的多个喷头总成(4)；
    所述的喷头总成(4)包括喷嘴座(4-1)、壳体(4-2)、套管(4-3)和喷嘴(4-4)，所述的喷嘴座(4-1)上设有与喷嘴(4-4)相通的喷嘴座流道(4-5)，所述的套管(4-3)设在壳体(4-2)内，壳体(4-2)固定在喷嘴座(4-1)上，所述的套管(4-3)连接喷嘴座流道(4-5)和喷嘴(4-4)；
    所述截割轴(1)上设有入水孔(1-1)、主流道(1-2)和多个出水孔(1-3)，所述的主流道(1-2)设置在截割轴(1)内部，所述的入水孔(1-1)一端接高压水源另一端与主流道(1-2)连通，所述的芯套(3)上设有与截割轴(1)上多个出水孔(1-3)相连通的螺栓孔式芯套流道(3-1)，所述多个出水孔(1-3)的另一端与主流道(1-2)连通；
    所述筒体(2)上设有与多个喷头总成(4)的喷嘴座流道(4-5)相通的螺栓孔式筒体流道(2-1)，螺栓孔式筒体流道(2-1)与螺栓孔式芯套流道(3-1)经高压软管(7)连通，所述的高压软管(7)两端自带螺纹接头(6)，高压软管(7)利用螺纹接头(6)分别与螺栓孔式筒体流道(2-1)和螺栓孔式芯套流道(3-1)相连接。
  2. 根据权利要求1所述的一种前混合磨料水射流联合截齿式采煤机滚筒，其特征在于：所述芯套(3)焊接在筒体(2)内腔的两端。
  3. 根据权利要求1所述的一种磨料水射流联合截齿式采煤机滚筒，其特征在于：所述的喷嘴座(4-1)和壳体(4-2)之间螺纹连接，所述的喷嘴(4-4)和壳体(4-2)之间过盈配合。
  4. 根据权利要求1所述的一种磨料水射流联合截齿式采煤机滚筒，其特征在于：所述截割轴(1)和芯套(3)之间设有多个防漏水的密封圈(8)。
PCT/CN2015/099347 2015-08-05 2015-12-29 一种前混合磨料水射流联合截齿式采煤机滚筒 WO2017020519A1 (zh)

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