WO2023138164A1 - Système et procédé de séparation de ferraille de broyage de rail d'acier à jet d'eau à haute pression - Google Patents

Système et procédé de séparation de ferraille de broyage de rail d'acier à jet d'eau à haute pression Download PDF

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Publication number
WO2023138164A1
WO2023138164A1 PCT/CN2022/130174 CN2022130174W WO2023138164A1 WO 2023138164 A1 WO2023138164 A1 WO 2023138164A1 CN 2022130174 W CN2022130174 W CN 2022130174W WO 2023138164 A1 WO2023138164 A1 WO 2023138164A1
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WO
WIPO (PCT)
Prior art keywords
abrasive
electromagnetic
waste liquid
iron filings
module
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PCT/CN2022/130174
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English (en)
Chinese (zh)
Inventor
李登
姚致远
涂翊翔
巫世晶
何翔
殷勤
张琨
刘辉
张银龙
Original Assignee
武汉大学
中铁第四勘察设计院集团有限公司
沈阳奥拓福科技股份有限公司
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Application filed by 武汉大学, 中铁第四勘察设计院集团有限公司, 沈阳奥拓福科技股份有限公司 filed Critical 武汉大学
Publication of WO2023138164A1 publication Critical patent/WO2023138164A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
    • B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces

Definitions

  • the invention belongs to the technical field of iron filings separation, and more specifically relates to a high-pressure water jet rail grinding iron filings separation system and method.
  • Rails are the main components of rail transportation.
  • the rails are in direct contact with the wheels of the train, and their quality directly affects the safety and stability of the train, as well as the comfort of the passengers.
  • rails are in a "harsh environment" for a long time. Due to the dynamic effect of the train, the natural environment and the quality of the rail itself, the rail is often damaged, such as cracks, wear and other phenomena, resulting in a reduction in the service life of the rail, an increase in maintenance workload, and an increase in maintenance costs, and even seriously affects driving safety. Therefore, it is necessary to eliminate or repair the rail damage in time to eliminate potential safety hazards and improve passenger comfort.
  • Rail grinding is an important part of line repair work and an effective means to prevent and control rail defects. Grinding can improve the contact relationship of rails, prevent and delay the occurrence of rail defects such as contact fatigue and wear, repair or reduce rail surface defects, reduce the risk of rail fracture, and extend the service life and maintenance cycle of rail equipment.
  • the rail grinding car plays a very important role in the rail grinding process.
  • High-pressure abrasive water jet technology is widely used in cutting and drilling because of its high processing efficiency, simple structure, and convenient control. Therefore, the application of high-pressure abrasive water jet technology to rail grinding has a good application prospect.
  • the traditional abrasive jet device lacks the abrasive circulation system, which will increase the abrasive consumption during the rail grinding process, which will undoubtedly greatly increase the cost, while the traditional waste liquid collection device can only recycle the waste liquid and cannot recycle it.
  • the present invention provides a high-pressure water jet rail grinding iron filings separation system, in which combined with the characteristics of the iron filings itself and the characteristics of the high-pressure water jet rail grinding abrasive waste liquid, a high-pressure water jet rail grinding iron filings separation system is designed, and its key components such as the iron filings primary screening device, iron filings subdivision device and abrasive separation device The structure and specific setting methods are studied and designed. It effectively removes the iron filings in the rail grinding waste liquid, and avoids the pipeline failure caused by the iron filings entering the high-pressure pump through the circulation system.
  • a high-pressure water jet rail grinding iron filings separation system including an iron filings primary screening device, an iron filings subdivision device connected to the iron filings primary screening device through a connecting device, and an abrasive separation device, wherein,
  • the iron filings preliminary screening device includes an electromagnetic drum module, which is used to input abrasive waste liquid, and generates an electromagnetic field to absorb iron filings in the abrasive waste liquid, thereby performing preliminary screening on iron filings;
  • the iron scrap subdivision device includes an electromagnet scrap subdivision module, a first rotating link module, and an iron scrap collection bucket.
  • the electromagnet scrap subdivision module includes a left electromagnetic filter and a right electromagnetic filter arranged symmetrically with respect to the first rotating link module. When the left electromagnetic filter is placed at the discharge port of the electromagnetic drum module, the right electromagnetic filter is located on the scrap iron collection bucket. After the abrasive waste liquid in the cylinder module has flowed out, collect the iron filings absorbed by the electromagnetic drum module, and then exchange positions with the right electromagnetic filter under the drive of the first rotating link module, so as to put the collected iron filings into the iron filings collection barrel;
  • the abrasive separation device includes an abrasive filter module, a second rotating link module, and an abrasive collection bucket.
  • the abrasive filter module includes a left abrasive sieve and a right abrasive sieve arranged symmetrically with respect to the second rotating link module. After the waste liquid flows out, the second rotating link module drives the left abrasive sieve and the right abrasive sieve to exchange positions, so as to put the collected abrasive into the abrasive collection bucket.
  • the iron filings primary screening device further includes a control valve
  • the electromagnetic drum module includes a drum shell, an electromagnetic drum, and a drum motor
  • the drum motor is connected in communication with the control valve
  • the electromagnetic drum is movably arranged in the drum shell
  • the electromagnetic drum is fixedly connected to the power output shaft of the drum motor.
  • the bottom of the electromagnetic drum is provided with a plurality of conical outlets, and a stop valve is provided at the bottom of each conical outlet.
  • the first rotating link module includes a first rotating disk, a first rotating motor, and two second rotating motors, the power output shaft of the first rotating motor is fixedly connected to the first rotating disk, and the two second rotating motors are both arranged on the first rotating disk, wherein, the power output shaft of one of the second rotating motors is fixedly connected to the left electromagnetic filter, and the power output shaft of the other second rotating motor is fixedly connected to the right electromagnetic filter;
  • the first rotating motor is used to drive the first rotating disk to rotate around the vertical shaft
  • the two second rotating motors are used to drive the left electromagnetic filter or the right electromagnetic filter to flip around the horizontal axis.
  • the second rotating link module includes a second rotating disc, a third rotating motor, and two fourth rotating motors, the power output shaft of the third rotating motor is fixedly connected to the second rotating disc, and the two fourth rotating motors are both arranged on the second rotating disc, wherein, the power output shaft of one of the fourth rotating motors is fixedly connected to the left abrasive screen, and the power output shaft of the other fourth rotating motor is fixedly connected to the right abrasive screen;
  • the third rotating motor is used to drive the second rotating disk to rotate around the vertical shaft
  • the two fourth rotating motors are used to drive the left abrasive screen or the right abrasive screen to rotate around the horizontal axis.
  • it also includes a first connecting rod and a second connecting rod;
  • One end of the first connecting rod is connected to the electromagnetic drum module, and the other end is connected to the first rotating link module;
  • a waste liquid recovery module is also provided at the bottom of the electromagnetic drum module, one end of the second connecting rod is connected to the waste liquid recovery module, and the other end is connected to the second rotating link module.
  • the waste liquid recovery module includes a drainage pipe, a waste liquid sedimentation tank, a drain pipe, and a slurry pump.
  • the drain pipe is used to discharge the waste liquid passing through the left abrasive screen or the right abrasive screen, and guide the waste liquid into the waste liquid sedimentation tank for sedimentation.
  • the drain pipe is used to discharge the liquid at a specified height after sedimentation in the waste liquid sedimentation tank, and the slurry pump is used to suck the sediment in the waste liquid sedimentation tank into the electromagnetic drum module.
  • a high-pressure water jet rail grinding iron filings separation method comprising the following steps:
  • S1 is used to input abrasive waste liquid to the electromagnetic drum module, and energizes the electromagnetic drum module, so that the electromagnetic drum module drives the abrasive waste liquid to rotate, and generates an electromagnetic field to absorb the iron filings in the abrasive waste liquid, thereby performing preliminary screening on the iron filings;
  • the left electromagnetic filter is energized, and the abrasive waste liquid is transported to the left electromagnetic filter according to the specified flow rate, and the left electromagnetic filter is used to absorb the iron filings in the abrasive waste liquid flowing out of the discharge port of the electromagnetic drum module, and filter the waste liquid and abrasives;
  • the left abrasive sieve is used to recover the waste liquid and the abrasive in the abrasive through the left electromagnetic filter screen. After the abrasive waste liquid in the electromagnetic drum module flows out, the second rotating link module drives the left abrasive sieve and the right abrasive sieve to exchange positions, so as to put the collected abrasive into the abrasive collection bucket.
  • the present invention provides turbine power for the abrasive waste liquid, so that the iron filings and abrasives in the abrasive waste liquid are separated in the liquid, and at the same time provides a magnetic field environment, so that the iron filings can be fully absorbed by the electromagnetic drum, and the coarse separation of the iron filings is completed.
  • an electromagnetic filter is provided to further separate the abrasives from the iron filings during the filtering process to complete the subdivision of the iron filings.
  • the bottom of the mouth of the drum shell is provided with a plurality of conical outlets, and the bottom of each conical outlet is provided with a cut-off valve, which is controlled by a controller to accurately control the flow rate of the abrasive waste liquid.
  • the abrasive waste liquid can evenly fall on the electromagnetic filter, so that the electromagnetic filter can fully absorb iron filings.
  • the present invention absorbs iron filings through the electromagnetic principle, effectively removes the iron filings in the rail grinding waste liquid through the primary screening of the electromagnetic drum and the subdivision of the electromagnetic filter, and avoids the pipeline failure caused by the iron filings entering the high-pressure pump through the circulation system. Simultaneously, in the present invention, every time the abrasive waste liquid is fed, a preliminary screening and subdivision are performed to improve the collection rate of iron filings. At the same time, through the replaceable electromagnetic filter, the working efficiency of the system can be greatly improved.
  • the waste liquid is introduced into the waste liquid settling tank for sedimentation, the drain pipe is used to discharge the liquid at a specified height after sedimentation in the waste liquid settling tank, and the slurry pump is used to suck the sediment in the waste liquid settling tank into the electromagnetic drum module to participate in the next recycling cycle of iron filings.
  • the iron filings in the abrasive waste liquid are adsorbed by generating an electromagnetic field, so that the iron filings are initially screened, and the abrasive waste liquid is transported to the electromagnetic filter according to the specified flow rate.
  • the iron filings absorbed by the electromagnetic drum module fall on and adsorb on the electromagnetic filter.
  • the two electromagnetic filter screens exchange positions to realize the recovery of iron filings.
  • abrasive waste liquid is fed once each time, that is, a preliminary screening and subdivision is carried out to improve the collection rate of iron filings.
  • the replaceable electromagnetic filter the working efficiency of the system can be greatly improved.
  • Fig. 1 is a schematic structural view of a high-pressure water jet rail grinding iron filings separation system according to an embodiment of the present invention
  • Fig. 2 is a schematic structural view of the iron filings subdivision device involved in Fig. 1;
  • Fig. 3 is a schematic structural view of the iron filings primary screening device involved in Fig. 1;
  • Fig. 4 is a schematic structural diagram of the abrasive separation device involved in Fig. 1 .
  • the same reference numerals represent the same technical features, specifically: 1-iron filings primary screening device, 2-first connecting rod, 3-iron filings subdividing device, 4-abrasive separation device, 5-first rotating motor, 6-first rotating disc, 7-left electromagnetic filter, 8-iron filings collection bucket, 9-right electromagnetic filter, 10-control valve, 11-drum motor, 12-drum shell, 13-electromagnetic drum, 14-left abrasive screen, 15-second rotating disc, 1 6-rotating motor, 17-second connecting rod, 18-right abrasive screen, 19-drainage pipe, 20-abrasive collection bucket.
  • a high-pressure water jet rail grinding iron filings separation system provided by an embodiment of the present invention includes an iron filings primary screening device 1, an iron filings subdivision device 3 connected to the iron filings preliminary screening device 1 through a connecting device 2, and an abrasive separation device 4, wherein the iron filings primary screening device 1 includes an electromagnetic drum module, which is used to input abrasive waste liquid, and generates an electromagnetic field to absorb iron filings in the abrasive waste liquid, thereby performing primary screening on iron filings; the iron filings subdivision device 3 includes electromagnet filings The subdivision module, the first rotating link module and the scrap iron collection bucket 8, the electromagnet chip subdivision module includes a left electromagnetic filter screen 7 and a right electromagnetic filter screen 9 symmetrically arranged with respect to the first rotary link module, when the left electromagnetic filter screen 7 is placed at the discharge port of the electromagnetic drum module, the right electromagnetic filter screen 9 is located on the scrap iron collection bucket 8, and the left electromagnetic filter screen 7 is used to absorb the iron filings in the abrasive
  • each electrical device is coordinated and controlled by a controller.
  • each electrical device can be controlled by PLC, such as controlling the coordinated action of each component through the size of the liquid intake, flow rate, etc.
  • the PLC is communicatively connected with the iron filings primary screening device 1 , the iron filings subdividing device 3 and the abrasive separation device 4 , such as wire connection or electrical signal connection.
  • a storage battery is also arranged in the PLC control box to supply power to each electric component.
  • turbine power is provided for the abrasive waste liquid, so that the iron filings and the abrasive in the abrasive waste liquid are separated in the liquid, and a magnetic field environment is provided at the same time, so that the iron filings can be fully absorbed by the electromagnetic drum 13, and the coarse separation of the iron filings is completed.
  • an electromagnetic filter is provided to further separate the abrasives from the iron filings during the filtering process to complete the subdivision of the iron filings.
  • the bottom of the mouth of the drum shell 12 is provided with a plurality of conical outlets, and the bottom of each conical outlet is provided with a cut-off valve, which is controlled by a controller to accurately control the flow rate of the abrasive waste liquid, and at the same time, make the abrasive waste liquid evenly fall on the electromagnetic filter, so that the electromagnetic filter can fully absorb iron filings.
  • the iron filings preliminary screening device 1 further includes a control valve 10, the electromagnetic drum module includes a drum shell 12, an electromagnetic drum 13, and a drum motor 11, the drum motor 11 is in communication with the control valve 10, the electromagnetic drum 13 is movably arranged in the drum shell 12, and the electromagnetic drum 13 is fixedly connected to the power output shaft of the drum motor 11. More specifically, in the present invention, the drum motor 11 is fixedly arranged on the drum shell 12.
  • the electromagnetic drum 13 includes an iron core, a wire, a main shaft, a main magnetic pole and an auxiliary magnetic pole. The main shaft runs through the iron core and is connected to the iron core.
  • the output shaft of the first rotating motor 5 is installed in the hole in the center of the first rotating disk 6, and the left electromagnetic filter screen 7 is installed on the left side of the first rotating disk 6 through the rotating shaft at the end.
  • the upper surface of the left electromagnetic filter screen 7 is parallel to the upper surface of the first rotating disk 6.
  • the first rotating link module includes a first rotating disc 6, a first rotating motor, and two second rotating motors.
  • the power output shaft of the first rotating motor is fixedly connected to the first rotating disc 6, and the two second rotating motors are all arranged on the first rotating disc 6, wherein the power output shaft of one of the second rotating motors is fixedly connected to the left electromagnetic filter screen 7, and the power output shaft of the other second rotating motor is fixedly connected to the right electromagnetic filter screen 9; the first rotating motor is used to drive the first rotating disc 6 to rotate around the vertical axis, and the two second rotating motors are used to drive The left electromagnetic filter screen 7 or the right electromagnetic filter screen 9 flips around the horizontal axis.
  • a preliminary screening and subdivision are performed to improve the collection rate of iron filings.
  • the working efficiency of the system can be greatly improved.
  • the rotary motor 16 and the neck of the drain pipe 19 are connected as a whole through the second connecting rod 17.
  • the left end of the second connecting rod 17 is fixed in the middle of the large end of the rotary motor 16, and the right end is fixed in the middle of the straight pipe section of the drain pipe 19.
  • a second rotating disc 15 is installed at the output end of the rotating motor 16.
  • a left abrasive screen 14 and a right abrasive screen 18 are respectively connected by pins to the left and right ends of the second rotating disc 15.
  • the right abrasive screen 18 is located above the drain pipe 19, and the left 1.
  • the upper surface of the right abrasive sieve and the upper surface of the second rotating disc 15 are kept level.
  • the second rotating link module includes a second rotating disc 15, a third rotating motor, and two fourth rotating motors.
  • the power output shaft of the third rotating motor is fixedly connected to the second rotating disc 15, and the two fourth rotating motors are all arranged on the second rotating disc 15, wherein the power output shaft of one of the fourth rotating motors is fixedly connected to the left abrasive screen 14, and the power output shaft of the other fourth rotating motor is fixedly connected to the right abrasive screen 18;
  • the third rotating motor is used to drive the second rotating disc 15 to rotate vertically
  • the shaft rotates, and the two fourth rotating motors are used to drive the left abrasive sieve 14 or the right abrasive sieve 18 to turn around the horizontal axis.
  • the connecting device includes a first connecting rod 2 and a second connecting rod 17; one end of the first connecting rod 2 is connected to the electromagnetic drum module, and the other end is connected to the first rotating link module; a waste liquid recovery module is also provided at the bottom of the electromagnetic drum module, and one end of the second connecting rod 17 is connected to the waste liquid recovery module, and the other end is connected to the second rotating connecting rod module.
  • the waste liquid recovery module includes a drainage pipe 19, a waste liquid sedimentation tank, a drain pipe, and a slurry pump.
  • the drain pipe 19 is used to discharge the waste liquid passing through the left abrasive screen 14 or the right abrasive screen 18, and guide the waste liquid into the waste liquid sedimentation tank for sedimentation.
  • the drain pipe is used to discharge the liquid at a specified height after sedimentation in the waste liquid sedimentation tank, and the slurry pump is used to suck the sediment in the waste liquid sedimentation tank into the electromagnetic drum module.
  • the waste liquid enters through the liquid inlet pipe of the drum shell 12, and the water, abrasives and iron filings hit the inner wall of the energized electromagnetic drum 13 at an equal speed. Since the water and abrasives are not magnetic, only part of the iron filings are adsorbed on the inner wall of the electromagnetic drum, and the primary screening of iron filings is completed. On the sieve 18, water can pass through the filter screen and the abrasive remains on the filter screen at this time, and the abrasive separation is completed at this time.
  • the control valve 10 is closed, and the electromagnetic drum 13 is powered off, so that the iron filings absorbed by it fall completely on the left electromagnetic filter screen 7.
  • the rotating motor 16 drives the second rotating disk 15 to rotate 180 degrees in the horizontal direction, so that the positions of the left and right abrasive sieves are exchanged.
  • the present invention absorbs iron filings through the electromagnetic principle, effectively removes the iron filings in the rail grinding waste liquid through the primary screening of the electromagnetic drum and the subdivision of the electromagnetic filter, and avoids the pipeline failure caused by the iron filings entering the high-pressure pump through the circulation system.
  • Step 1 input abrasive waste liquid to the electromagnetic drum module, and energize the electromagnetic drum module, so that the electromagnetic drum module drives the abrasive waste liquid to rotate, and generates an electromagnetic field to absorb the iron filings in the abrasive waste liquid, thereby performing a preliminary screening of the iron filings.
  • the abrasive waste liquid enters through the liquid inlet pipe of the drum shell 12, and the wire is energized so that the electromagnetic drum 13 forms a magnet.
  • the drum motor 11 works to drive the electromagnetic drum 13 to rotate to generate a turbine.
  • Step 2 After the preliminary screening of the iron filings is completed, the left electromagnetic filter 7 is energized, and the abrasive waste liquid is transported to the left electromagnetic filter 7 at a specified flow rate.
  • the left electromagnetic filter 7 is used to absorb the iron filings in the abrasive waste liquid flowing out through the outlet of the electromagnetic drum module, and to filter the waste liquid and the abrasive.
  • the electromagnetic drum 13 continues to be energized, and at the same time, the drum motor 11 stops working, and the left electromagnetic filter screen 7 is energized (if the right electromagnetic filter screen 9 is placed below the electromagnetic drum 13, then the electromagnetic drum 13 is energized), and the abrasive waste liquid in the electromagnetic drum 13 is discharged to the left electromagnetic filter screen 7 according to the specified flow rate. Filter holes, to filter waste liquid and abrasive, the iron filings that are not adsorbed by the electromagnetic drum 13 are adsorbed by the left electromagnetic filter screen 7 again.
  • Step 3 after the abrasive waste liquid in the electromagnetic drum module flows out, power off the electromagnetic drum module, so that the iron filings absorbed by the electromagnetic drum module fall and adsorb on the left electromagnetic filter screen 7, and then exchange positions with the right electromagnetic filter screen 9 under the drive of the first rotating link module, and the left electromagnetic filter screen 7 is powered off, so that the collected iron filings are put into the iron filings collection bucket 8.
  • Step 4 the left abrasive sieve 14 is used to recover the waste liquid and the abrasive in the abrasive through the left electromagnetic filter screen 7, and after the abrasive waste liquid in the electromagnetic drum module flows out, the second rotating link module drives the left abrasive sieve 14 and the right abrasive sieve 18 to exchange positions, so as to put the collected abrasive into the abrasive collection bucket 20.

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Abstract

La présente invention concerne un système et un procédé de séparation de ferraille de broyage de rail d'acier à jet d'eau à haute pression. Le système comprend un dispositif de criblage préliminaire de ferraille (1), un dispositif de séparation fine de ferraille (3) et un dispositif de séparation d'abrasif (4). Le dispositif de criblage préliminaire de ferraille (1) comprend un module de tambour électromagnétique et est utilisé pour adsorber la ferraille dans un liquide de déchets abrasifs. Le dispositif de séparation fine de ferraille (3) comprend un module de séparation fine de ferraille électromagnétique, un premier module de tige de liaison rotative et un tambour de collecte de ferraille (8) et est utilisé pour achever la séparation fine et la récupération de ferraille. Le dispositif de séparation d'abrasif (4) comprend un module d'écran de filtre abrasif, un second module de tige de liaison rotatif et un tambour de collecte d'abrasif (20) et est utilisé pour séparer un matériau abrasif du liquide résiduaire et récupérer le matériau abrasif. Selon le procédé de séparation, le liquide résiduaire abrasif est introduit une fois à chaque fois, c'est-à-dire qu'un criblage préliminaire et une séparation fine sont effectués une fois, de telle sorte qu'un taux de collecte de ferraille est augmenté. La ferraille est adsorbée par le principe électromagnétique, et le liquide résiduaire de broyage de rail en acier est efficacement éliminé au moyen d'un criblage préliminaire du tambour électromagnétique et de la séparation fine de l'écran de filtre électromagnétique.
PCT/CN2022/130174 2022-01-18 2022-11-06 Système et procédé de séparation de ferraille de broyage de rail d'acier à jet d'eau à haute pression WO2023138164A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210053811.2A CN114453133B (zh) 2022-01-18 2022-01-18 一种高压水射流钢轨打磨铁屑分离系统及方法
CN202210053811.2 2022-01-18

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CN116749082A (zh) * 2023-08-17 2023-09-15 山东瑞斯卡诺轴承科技有限公司 一种轴承滚动体磨球的供液系统
CN116749082B (zh) * 2023-08-17 2024-02-23 山东瑞斯卡诺轴承科技有限公司 一种轴承滚动体磨球的供液系统

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