WO2020237804A1 - 一种前混合磨料水射流的磨料回收循环系统及其使用方法 - Google Patents

一种前混合磨料水射流的磨料回收循环系统及其使用方法 Download PDF

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WO2020237804A1
WO2020237804A1 PCT/CN2019/096810 CN2019096810W WO2020237804A1 WO 2020237804 A1 WO2020237804 A1 WO 2020237804A1 CN 2019096810 W CN2019096810 W CN 2019096810W WO 2020237804 A1 WO2020237804 A1 WO 2020237804A1
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abrasive
water
overflow
water tank
compression cylinder
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PCT/CN2019/096810
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English (en)
French (fr)
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马青山
郭楚文
强持恒
周鑫
张新
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中国矿业大学
徐州秩润矿山设备科技有限公司
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Publication of WO2020237804A1 publication Critical patent/WO2020237804A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
    • B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B24C9/006—Treatment of used abrasive material

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  • the invention relates to the field of pre-mixed abrasive water jets, in particular to an abrasive recycling system of the pre-mixed abrasive water jets and a use method thereof.
  • Abrasive water jet technology is a modern processing technology that is widely used and powerful.
  • the pre-mixed abrasive water jet system has a more reasonable abrasive mixing method than the post-mixed abrasive water jet, and the cutting ability is several times that of the post-mix under the same pressure parameters. Although it has such advantages, there are some inherent problems in the pre-mixed abrasive water jet, mainly the abrasive tank restricts the current application.
  • abrasive water jet The disadvantage of abrasive water jet is its high operating cost, and the main part of its cost is the abrasive cost.
  • the production of abrasives and the disposal of waste abrasives can cause environmental damage and industrial dust, which is contrary to the current increasing environmental protection requirements.
  • a large number of studies have shown that the abrasive still maintains considerable performance after processing and can be recycled and reused.
  • the purpose of the present invention is to provide a pre-mixed abrasive water jet abrasive recycling system and its use method.
  • a pre-mixed abrasive water jet abrasive recycling system comprising a water tank arranged below the nozzle; the side wall of the water tank is provided with an overflow device, the bottom is connected with a detachable vibrating screen, and the vibrating screen is connected by a pipe
  • the slurry pump is then connected to the upper part of the water tank; the top of the water tank is provided with an open first sanding port, a stirring device is arranged inside, and the bottom of the water tank passes through a compression feeding system and a high pressure check valve and an abrasive storage tank in turn
  • the top of the abrasive storage tank is provided with a normally closed second sanding port; the bottom of the abrasive storage tank is connected with a nozzle through a high-pressure water pipe; the bottom of the abrasive storage tank is also connected with a high-pressure water pump through a high-pressure water pipe.
  • the stirring device includes: a driving motor arranged on the top, and an impeller connected to the power output end of the driving motor and extending in the water tank.
  • the compression supply system includes: a tubular compression cylinder arranged at the bottom of the water tank and connected to a one-way valve at one end; the other end of the compression cylinder extends at the bottom of the water tank and is sealed; There is a piston that reciprocates linearly and slides in the compression cylinder; the piston is in transmission connection with the piston rod; the piston rod is in transmission connection with an external reciprocating driving device after passing through the sealed end of the compression cylinder; in the compression cylinder near the sealed end An open sand retreating port is provided at the top, and an open sand inlet is provided at the top of the compression cylinder that is more than one time the length of the piston piston within the stroke range of the piston.
  • the reciprocating drive device includes: a crank connecting rod structure connected with a piston rod; the crank connecting rod structure is drivingly connected with a motor through a gearbox.
  • the overflow device includes a plurality of overflow pipes vertically arranged on the side wall of the sink at equal intervals; and each overflow pipe is provided with a valve.
  • the method of using the present invention is:
  • Step a in the shutdown state, load abrasive in the abrasive storage tank; and selectively open several overflow pipes according to the overflow flow;
  • Step b start the vibrating screen, slurry pump, drive motor, reciprocating drive device and high-pressure water pump;
  • Step c start the water jet device, and let part of the abrasive sprayed from the nozzle be discharged through the overflow pipe opened in step a;
  • Step d continue to add new abrasives with the same overflow flow rate as in step a into the first sanding port until the water jet device stops.
  • the present invention has the following beneficial effects:
  • the present invention realizes the recycling and reuse of abrasives, and at the same time, realizes the continuous feeding of a single abrasive tank with a pre-mixed abrasive water jet.
  • the continuous supply of abrasives can simplify the operation process, extend the working time, and improve work efficiency, and because of the continuous supply of materials, the volume of the abrasive tank can be reduced, thereby improving the pressure resistance of the abrasive tank to achieve higher working pressure.
  • the system of the present invention replaces the recycled abrasive with part of the new abrasive, so that it always maintains a certain working performance, truly realizes the continuous cyclic feeding of the entire system, and also guarantees the efficiency of each cycle. Abrasive properties are always the same.
  • FIG. 1 Schematic diagram of the structure of the present invention.
  • 1 nozzle 1.1 high pressure water pipe; 2 water tank; 3 overflow device; 31 overflow pipe; 4 vibrating screen; 5 slurry pump; 6 water tank; 7 drive motor; 8 first sanding port; 9 impeller; 10 reciprocating drive device; 11 piston rod; 12 piston; 13 compression cylinder; 13.1 sand inlet; 13.2 sand return port; 14 high pressure check valve; 15 abrasive storage tank; 16 second sand filling port; 17 high pressure water pump.
  • an abrasive recycling system with a pre-mixed abrasive water jet includes a water tank 2 arranged below the nozzle 1.
  • the water tank 2 can catch the water and abrasive sprayed from the nozzle 1; the water tank 2
  • An overflow device 3 is provided on the side wall of the sump. Under the impact of the jet, the abrasive deposited in the tank 2 floats to a certain height.
  • the overflow pipe 31 of different heights in the overflow device 3 can remove a certain proportion of abrasive and more Proportion of water is discharged. Since larger abrasive particles are not easy to float to a higher height, the overflow device can screen out smaller abrasive particles to a certain extent.
  • a detachable vibrating screen 4 is connected to the bottom of the water tank 2, the vibrating screen 4 is connected to the slurry pump 5 through a pipe and then connected to the upper part of the water tank 6.
  • the specific type of the vibrating screen 4 can be an ultrasonic vibrating screen, etc.
  • the main function is to block the falling rust or other large particles of impurities from oscillating and prevent large particles of impurities from entering the subsequent system.
  • a storage space for impurities is set before the vibrating screen, which facilitates the removal of large particles of impurities that are blocked after shutdown and disassembly.
  • the top of the water tank 6 is provided with an open first sanding port 8, the inside of the water tank 6 is provided with a stirring device, and the bottom is sequentially connected to the abrasive storage tank 15 through a compression feeding system and a high-pressure one-way valve 14.
  • the function of the stirring device in the water tank 6 is to fully mix the newly added abrasive and the used abrasive with water to achieve a relatively uniform abrasive liquid.
  • the stirring device in this system includes: a drive motor 7 arranged on the top, And the impeller 9 which is connected in transmission with the power output end of the drive motor 7 and extends in the water tank 6;
  • the compression feeding system described in this system includes: a tube arranged at the bottom of the water tank 6 and one end connected to a high-pressure check valve 14 Compression cylinder 13; the other end of the compression cylinder 13 extends on the opposite side of the bottom of the water tank 6 and is sealed.
  • a piston 12 that reciprocates and slides in the compression cylinder 13 is provided on the linear trajectory of the compression cylinder 13; the piston 12 is in transmission connection with the piston rod 11; the piston rod 11 is connected to the outside after passing through the sealed end of the compression cylinder 13
  • the reciprocating drive device 10 is connected for transmission; an open sand retreating port 13.2 is provided at the top of the compression cylinder 13 near the sealed end, and an open port is provided at the top of the compression cylinder 13 at a distance of 13.2 from the sand retreating port within the stroke range of the piston 12 and more than one time the length of the piston 12
  • the reciprocating drive device 10 includes: a crank connecting rod structure connected with the piston rod 11; the crank connecting rod structure is drivingly connected with a motor through a gearbox.
  • the piston 12 moves in the compression cylinder 13 through the movement of the crank connecting rod, each compression and absorption process is completed.
  • the specific process is as follows:
  • the piston 12 and the compression cylinder 13 are made of wear-resistant materials, and the necessary surface treatment is done to ensure that the sealing requirements between the two are met.
  • the piston 12 and the high-pressure check valve 14 should be used as vulnerable parts for easy disassembly and assembly.
  • the integral compression feeding system does not have a cooling system, and cooling is achieved through the flow of abrasive liquid.
  • a second sanding port 16 is provided on the top of the abrasive storage tank 15, and new abrasives can be filled into the abrasive storage tank 15 by opening the second sanding port 16.
  • the second sanding port 16 can only be opened before the device of this system is started.
  • the bottom of the abrasive storage tank 15 is respectively connected to the nozzle 1 and the high-pressure water pump through a high-pressure water pipe 1.1.
  • the abrasive liquid added in the abrasive tank is sprayed from the nozzle 1 through the high-pressure water pipe to complete the recycling.
  • the overflow device 3 includes a plurality of overflow pipes 31 vertically arranged on the side wall of the water tank 2 at equal intervals; and each overflow pipe 31 is provided with a valve.
  • each overflow pipe 31 is provided with a valve.
  • the valves on the overflow pipe 31 of different heights can be opened, Control the discharge of abrasive and water.
  • Step a in the shutdown state, load abrasives into the abrasive storage tank 15; and selectively open several overflow pipes 31 according to the overflow flow; in order to obtain a balance of the total amount of abrasives in the entire system (including used old abrasives and new abrasives) Add abrasive), the size of the opening of the overflow pipe 31 can be selected.
  • step b follow step b to start the vibrating screen 4, the slurry pump 5, the drive motor 7, the reciprocating drive device 10 and the high-pressure water pump 17; the pressure in the abrasive storage tank 15 and the nozzle 1 will increase simultaneously .
  • step c start the water jet device, let the abrasive sprayed from the nozzle 1 circulate the abrasive in the system device, and then discharge part of the abrasive through the overflow pipe 31 of a specific height in step a to achieve a balance of new and old abrasives ;
  • This balanced abrasive can maintain the stability of the cutting performance.
  • the present invention utilizes a compressed material supply system to continuously deliver abrasives to the abrasive storage tank 15, which effectively improves the material supply efficiency, and there is no need to install two abrasive storage tanks for alternate use during the process.
  • the disadvantage of only relying on the abrasive storage tank 15 for abrasive storage in traditional equipment is solved. Since the present invention can continuously supply materials, the volume of the abrasive storage tank 15 can be made small enough to withstand a large enough pressure. This can effectively avoid the contradiction between the pressure and the storage capacity of the traditional abrasive storage. At the same time, greater working pressure can make the device have better working performance.
  • new abrasive is added from the first sanding port 8, and then the old abrasive is mixed with the new abrasive.
  • the abrasive liquid sprayed from the nozzle 1 has sufficient stable cutting performance, which can avoid the gradual degradation of traditional abrasives due to the repeated use of traditional abrasives.
  • the problem. Achieve stable and controllable abrasive performance.
  • overflow ports with different liquid level heights are used to adjust different overflow flows, according to the specific abrasive share in the overflow flow; then determine the need to add abrasives at the first sanding port 8 The amount.
  • the ratio of new and old abrasives can be adjusted to change the working performance of the abrasives and adapt to the changed cutting requirements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Disintegrating Or Milling (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

一种前混合磨料水射流的磨料回收循环系统，包括水槽（2），溢流装置（3），振动筛（4），渣浆泵（5）和水罐（6）；水罐（6）的顶部设有第一加砂口（8），内部设有搅拌装置，底部依次通过压缩供料系统和高压单向阀（14）与磨料储存罐（15）相连接；磨料储存罐（15）顶部设置第二加砂口（16）；磨料储存罐（15）底部通过高压水管（1.1）与喷嘴（1）和高压水泵（17）连接。磨料回收循环系统可以实现单一磨料储存罐条件下磨料的循环利用和持续供料，工作性能稳定、可控，可使用更高的工作压力。

Description

一种前混合磨料水射流的磨料回收循环系统及其使用方法 技术领域
本发明涉及前混合磨料水射流领域，具体涉及一种前混合磨料水射流的磨料回收循环系统及其使用方法。
背景技术
磨料水射流技术是一种应用广泛、威力强大的现代化加工技术。前混合磨料水射流系统较之于后混合磨料水射流有着更加合理的磨料混入方式，在同等压力参数条件下切割能力是后混合的数倍。虽然具备这样的优点，但是前混合磨料水射流存在的一些固有的问题，主要是磨料罐制约了目前的应用。
①、磨料罐由于工作高压的问题，难以实现连续供料。目前对于该技术问题的两种成熟主流的处理方案分别是：一是放弃连续供料，采用停机添加新磨料的方式；二是采用两个磨料罐交替使用的方式解决连续供料的难题。
②、在磨料罐无法实现连续供料的情况下，一般只能使用尽可能大体积的磨料罐。但是，磨料罐容积越大，在耐压要求不变的情况下制造难度必然更高，同时安全性还会受到影响。
③、由于磨料是存在使用寿命的，因此在同一批磨料经过连续多次使用后，磨料的逐渐损耗会直接影响切割性能，影响切割精度。目前的解决办法主要是把使用一段时间后的磨料整体更换。因此，对于机器而言，磨料的使用规律是：新磨料——逐渐损耗变成旧磨料——更换的新磨料。显然因为新旧磨料的切削性能不同，会导致切削的产品精度也会随磨料的变化随之出现波动。
④、磨料水射流的缺点在于运营成本较高，而其成本构成的主要部分是磨料成本。磨料的生产与废弃磨料的处理会导致环境破坏与工业粉尘，与当前日益提高的环保要求相悖。大量研究表明，磨料在加工完成之后还保持相当的工作性能，可以进行回收再利用。目前回收再利用有两套方案，一是过筛处理后再利用，一是直接回收再利用。但是这两种情况，程序复杂成本较高。
发明内容
本发明的目的是提供一种前混合磨料水射流的磨料回收循环系统及其使用方法。
为实现上述目的，本发明采用的技术方案如下：
一种前混合磨料水射流的磨料回收循环系统，包括，设置在喷嘴下方的水槽；所述水槽的侧壁设有溢流装置，底部连接有可拆卸的振动筛，所述振动筛通过管道连通渣浆泵后再与水罐上部连接；所述水罐的顶部设有敞口的第一加砂口，内部设有搅拌装置，底部依次通过压缩供料系统和高压单向阀与磨料储存罐相连接；所述磨料储存罐顶部设置常闭的第二加砂口；磨料储存罐底部通过高压水管与喷嘴连接；所述磨料储存罐的底部还通过高压水管与高压水泵连接。
进一步地，所述搅拌装置包括：设置在顶部的驱动电机，以及与驱动电机动力输出端传动连接且伸在水罐内的叶轮。
进一步地，所述压缩供料系统包括：设置在水罐底部且一端与单向阀连接的管状压缩缸；所述压缩缸的另一端延伸在水罐底部且做密封处理；在压缩缸直线轨迹上设有往复直线运动且在压缩缸内滑动的活塞；所述活塞与活塞杆传动连接；活塞杆在穿过压缩缸密封端后再与外部的往复驱动装置传动连接；在靠近密封端的压缩缸顶端设有敞开的退沙口，在活塞行程范围内距离退沙口超过一倍活塞活塞长度的压缩缸顶端设有敞口的进沙口。
进一步地，所述往复驱动装置包括：与活塞杆连接的曲柄连杆结构；所述曲柄连杆结构通过变速箱与电机传动连接。
进一步地，所述溢流装置包括若干个等距竖直设置在水槽侧壁的溢流管；且每个溢流管上设有阀门。
使用本发明的方法是：
步骤a，在停机状态下，在磨料储存罐内装入磨料；并根据溢流量选择性打开若干个溢流管；
步骤b，启动振动筛、渣浆泵、驱动电机、往复驱动装置和高压水泵；
步骤c，启动水射流装置，让喷嘴喷出的部分磨料经过步骤a中开启的溢流管排出；
步骤d，在第一加砂口中持续加入与步骤a中同等溢流量的新磨料，直至水射流装置停机。
与现有技术相比，本发明具有如下有益效果：
针对背景技术中的三点问题，本发明实现磨料的回收再利用，同时实现前混 合磨料水射流的单一磨料罐连续供料。连续供应磨料可以简化操作流程，延长工作时间，提高工作效率，并且由于可连续供料，可以减小磨料罐的体积，从而提高磨料罐的耐压性来实现更高的工作压力。
相比较现有技术中循环使用同一磨料，本发明这套系统通过部分新磨料替换回收磨料，使其始终保持一定工作性能，真正实现了整个系统的连续循环供料，也保证了每次循环的磨料性能始终相同。
附图说明
图1本发明结构的示意图。
图中，1喷嘴；1.1高压水管；2水槽；3溢流装置；31溢流管；4振动筛；5渣浆泵；6水罐；7驱动电机；8第一加砂口；9叶轮；10往复驱动装置；11活塞杆；12活塞；13压缩缸；13.1进沙口；13.2退沙口；14高压单向阀；15磨料储存罐；16第二加砂口；17高压水泵。
具体实施方式
下面结合附图和具体实施例对本发明作进一步详细说明。
如图1所示，一种前混合磨料水射流的磨料回收循环系统，包括，设置在喷嘴1下方的水槽2，该水槽2可以接住从喷嘴1喷出的水和磨料；所述水槽2的侧壁设有溢流装置3，在射流的冲击作用下，水槽2中沉淀的磨料上浮至一定高度，可以通过该溢流装置3中不同高度的溢流管31将一定比例磨料和较多比例的水排出。由于较大颗粒的磨料颗粒不容易上浮至较高的高度，所以溢流装置可以在一定程度上筛除较小的磨料颗粒。在水槽2底部连接有可拆卸的振动筛4，所述振动筛4通过管道连通渣浆泵5后再与水罐6上部连接。振动筛4的具体类型可以选用超声波振动筛等，主要的作用是把掉落的铁锈或其他较大颗粒杂质振荡阻拦，避免大颗粒杂质进入后续系统。在实际操作中，振动筛之前设置储存杂质的空间，便于停机拆卸后排出阻拦的大颗粒杂质。所述水罐6的顶部设有敞口的第一加砂口8，水罐6的内部设有搅拌装置，底部依次通过压缩供料系统和高压单向阀14与磨料储存罐15相连接。水罐6中搅拌装置的作用是把新加入的磨料和使用过的磨料与水充分混合使之达到较为均匀的磨料液，本系统中所述的搅拌装置包括：设置在顶部的驱动电机7，以及与驱动电机7动力输出端传动连接且伸在水罐6内的叶轮9；本系统中所述的压缩供料系统包括：设置在水罐6底 部且一端与高压单向阀14连接的管状压缩缸13；所述压缩缸13的另一端延伸在水罐6底部对侧且做密封处理。
在压缩缸13直线轨迹上设有往复直线运动且在压缩缸13内滑动的活塞12；所述活塞12与活塞杆11传动连接；活塞杆11在穿过压缩缸13密封端后再与外部的往复驱动装置10传动连接；在靠近密封端的压缩缸13顶端设有敞开的退沙口13.2，在活塞12行程范围内距离退沙口13.2超过一倍活塞12长度的压缩缸13顶端设有敞口的进沙口13.1，顶端设有敞口的进沙口13.1。其中，所述往复驱动装置10包括：与活塞杆11连接的曲柄连杆结构；所述曲柄连杆结构通过变速箱与电机传动连接。通过曲柄连杆的运动让活塞12在压缩缸13内运动时，完成了每一次压缩和吸收的过程。具体过程如下：
当活塞12往高压单向阀14方向运动后，就会挤压压缩缸13内的空间，使得混合着磨料的水增压至超过磨料罐中压力而冲破高压单向阀14进入高压的磨料储存罐15。在活塞12反向运动时，可以让压缩缸13内形成局部的负压；同时在活塞12的背面会让背面的混合磨料液挤压从进沙口13.1或退沙口13.2排出，当活塞运动到进沙口13.1和退沙口13.2之间后，处于负压状态的压缩缸13会通过进沙口13.1吸入混合磨料液，并且活塞12背面的混合液从退沙口13.2排出。通过活塞12在压缩缸13内的往复运动，实现了持续不断往磨料储存罐15内添加混合磨料。
活塞12与压缩缸13选用耐磨的材料，做必要的表面处理以保证两者之间满足密封的要求。活塞12与高压单向阀14应作为易损件，便于拆装。整体压缩供料系统不设冷却系统，通过磨料液的流动实现冷却。
在所述磨料储存罐15顶部设置第二加砂口16，可以通过打开第二加砂口16往磨料储存罐15内灌装新磨料。第二加砂口16只能在本系统的装置启动之前打开。
磨料储存罐15底部通过高压水管1.1分别与喷嘴1和高压水泵相连。在系统开启的时候，添加如磨料罐中的磨料液通过高压水管从喷嘴1喷出，完成循环利用。
所述溢流装置3包括若干个等距竖直设置在水槽2侧壁的溢流管31；且每个溢流管31上设有阀门。为了让使用过的旧磨料和通过第一加砂口8加入的新 磨料二者混合达到合适的比例，随着磨料在系统装置内的循环，可以通过打开不同高度溢流管31上的阀门，控制磨料和水的排出量。
在使用本系统时候，可以按照如下的步骤实施：
步骤a，在停机状态下，在磨料储存罐15内装入磨料；并根据溢流量选择性打开若干个溢流管31；为了获得整个系统内磨料总量的平衡(包括使用后的旧磨料和新加入的磨料)，可以选择溢流管31开度的大小。在完成步骤a后，接下来可以按照步骤b实施，启动振动筛4、渣浆泵5、驱动电机7、往复驱动装置10和高压水泵17；磨料储存罐15和喷嘴1内的压力同步变大。
然后按照步骤c，启动水射流装置，让喷嘴1喷出的磨料，让系统装置内的磨料循环运转起来，再经过步骤a中特定高度的溢流管31排出部分磨料后，达到新旧磨料的平衡；这种平衡的磨料可以维持切割性能的稳定。
在切割过程中，需要按照步骤d，在第一加砂口8中持续加入同等所述溢流管31排出量的新磨料，直至水射流装置停机。
本发明的工作原理：
本发明利用压缩供料系统持续给磨料储存罐15输送磨料，有效的提高了供料效率，且过程中不需要安装两个磨料储料罐那样交替使用。
由于新增加的磨料可以从第一加砂口8直接加入，解决了传统设备中仅仅依靠磨料储存罐15磨料存储的弊端。本发明由于可以连续供料，可以把磨料储存罐15的体积制造的足够小，以便承受足够大的压力。这样可以有效的避免传统磨料储存中既要考虑压力，还要考虑磨料存储量二者的矛盾。同时，更大的工作压力可以让本装置具备更好的工作性能。
本发明从第一加砂口8加入新的磨料，然后让旧磨料和新磨料混合，从喷嘴1喷出的磨料液具备足够稳定的切削性能，可以避免传统磨料一直循环使用导致其性能逐渐降低的问题。实现磨料性能稳定可控，如附图1中，利用不同液位高度的溢流口调节出不同的溢流量，根据溢流量中具体的磨料份额；再确定在第一加砂口8需要加入磨料的量。当切割要求发生变化的时候，可以调整新旧磨料的比例，来改变磨料的工作性能进而适应变化后的切割要求。

Claims (6)

  1. 一种前混合磨料水射流的磨料回收循环系统，其特征在于：包括，
    设置在喷嘴(1)下方的水槽(2)；所述水槽(2)的侧壁设有溢流装置(3)，底部连接有可拆卸的振动筛(4)，所述振动筛(4)通过管道连通渣浆泵(5)后再与水罐(6)上部连接；所述水罐(6)的顶部设有敞口的第一加砂口(8)，内部设有搅拌装置，底部依次通过压缩供料系统和高压单向阀(14)与磨料储存罐(15)相连接；
    所述磨料储存罐(15)顶部设置常闭的第二加砂口(16)；磨料储存罐(15)底部通过高压水管(1.1)与喷嘴(1)连接；所述磨料储存罐(15)的底部还通过高压水管(1.1)与高压水泵(17)连接。
  2. 根据权利要求1所述的前混合磨料水射流的磨料回收循环系统，其特征在于：所述搅拌装置包括：设置在顶部的驱动电机(7)，以及与驱动电机(7)动力输出端传动连接且伸在水罐(6)内的叶轮(9)。
  3. 根据权利要求1所述的前混合磨料水射流的磨料回收循环系统，其特征在于：所述压缩供料系统包括：设置在水罐(6)底部且一端与高压单向阀(14)连接的管状压缩缸(13)；所述压缩缸(13)的另一端延伸在水罐(6)底部且做密封处理；
    在压缩缸(13)直线轨迹上设有往复直线运动且在压缩缸(13)内滑动的活塞(12)；所述活塞(12)与活塞杆(11)传动连接；活塞杆(11)在穿过压缩缸(13)密封端后再与外部的往复驱动装置(10)传动连接；
    在靠近密封端的压缩缸(13)顶端设有敞开的退沙口(13.2)，在活塞(12)行程范围内距离退沙口(13.2)超过一倍活塞(12)长度的压缩缸(13)顶端设有敞口的进沙口(13.1)。
  4. 根据权利要求3所述的前混合磨料水射流的磨料回收循环系统，其特征在于：所述往复驱动装置(10)包括：与活塞杆(11)连接的曲柄连杆结构；所述曲柄连杆结构通过变速箱与电机传动连接。
  5. 根据权利要求1所述的前混合磨料水射流的磨料回收循环系统，其特征在于：所述溢流装置(3)包括若干个等距竖直设置在水槽(2)侧壁的溢流管(31)；且每个溢流管(31)上设有阀门。
  6. 一种使用权利要求1所述前混合磨料水射流的磨料回收循环系统的磨料 回收方法，其特征在于：
    步骤a，在停机状态下，在磨料储存罐(15)内装入磨料；并根据溢流量选择性打开溢流装置(3)中若干个溢流管(31)的通断；
    步骤b，启动振动筛(4)、渣浆泵(5)、驱动电机(7)、往复驱动装置(10)和高压水泵(17)；
    步骤c，启动水射流装置，让喷嘴(1)喷出的部分磨料经过步骤a中开启的溢流管(31)排出；
    步骤d，在第一加砂口(8)中持续加入与步骤a中同等溢流量的新磨料，直至水射流装置停机。
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