CN1099683A - Ultra-high pressure water jet universal cutting machine - Google Patents
Ultra-high pressure water jet universal cutting machine Download PDFInfo
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- CN1099683A CN1099683A CN 93111731 CN93111731A CN1099683A CN 1099683 A CN1099683 A CN 1099683A CN 93111731 CN93111731 CN 93111731 CN 93111731 A CN93111731 A CN 93111731A CN 1099683 A CN1099683 A CN 1099683A
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- abrasive material
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Abstract
The invented machine consists of high pressure pump, energy accumulator, abrasive ejector, abrasive control valve, transmission pipeline and valve. It features that there are abrasive input port and air flow inlet on the side wall of mixing chamber of abrasive ejector, the position of abrasive input port is higher than the high pressure water spray nozzle and lower than the air flow inlet, the high pressure water inlet and outlet of the energy accumulater are located on the side wall of the energy accumulator, on the air inlet pipe of the abrasive control valve there is a regulating valve for air flow rate, the axes of the sand input port and out put port of the abrasive control valve are located ont he same straight line.
Description
The invention belongs to cutting mechanics.
The operation principle of ultra-high pressure water jet universal cutting machine, it is the high pressure that water is pressurized to thousands of kg/cm with super-pressure pump, be connected to a superfine aperture little, that made by high-abrasive material by special pipeline then and penetrate, at this moment the jet velocity of water can reach the several times velocity of sound.Utilize this one high effluxvelocity, object is cut.In high-speed jet,, can cut the hardest material as mixing abrasive material.Because of belonging to the normal temperature cutting, do not have that Yin Gaowen brings to being cut the heat affecting problem of material (as metallic plate, slabstone etc.).
The prior art that is close with the present invention is the 11-X type water jet cutting mach that U.S. fluid industrial group produces, its structure chart such as Fig. 1, motor (5) drives oil pump (4), output pressure reaches the fluid of 200 kg/cm, by pipeline (6), drive two-stage supercharging pump (2) (two-way double acting two-stage supercharging pump).By required cutting pressure and traffic requirement, booster pump (2) drives with the motor of 30-60 horsepower.The water under high pressure (pressure reaches about 3800 kg/cm) that pumps through booster pump (2) enters accumulator (1), and its effect is to rely on the compressibility of water to keep exporting the stability of water under high pressure pressure.The water under high pressure that is come out by accumulator (1) passes through pipeline (7) and valve (8), enters high-pressure water jet device (9), and workpiece (16) is cut, and this is the cutting of water purification jet.When the bigger workpiece of cutting hardness, can mix abrasive material in water under high pressure: the abrasive material in the abrasive material case (10) is under the negative-pressure siphon effect of the high-speed water jet generation of injector (9) ejection, enter injector (9) by abradant jet control valve (claiming sand valve or abrasive material control valve again) (11) and sediment transport pipe (12), form abrasive water-jet and cut.Have the abrasive material current that are cut the material chip and flow into collecting pit by reclaiming mouthful (13).Oil sump (3) forms oil supply loop to pump (4) and pump (2).(14) be water inlet, (15) are air admission hole.As seen from above-mentioned, the main building block of this machine has super-pressure pump, accumulator, injector, abradant jet control valve.There are some shortcomings in 11-X type machine made in U.S.A:
1, accumulator structure:
As shown in Figure 2, it is made up of water inlet (1), delivery port (7), cylindrical body (4), cone seal nut (3) and lock nut (2), delivery port and water inlet have super-pressure woven hose (6), (8) respectively, woven hose (6), (8) are passed sealed at both ends nut (3) and lock nut (2) respectively, and woven hose (6) and (8) are all along accumulator axial line horizontal arrangement.Thereby when the horizontal placement of accumulator, when the retaining liquid level exceeded the entery and delivery port position in the accumulator, the air on accumulator top promptly can't emptying, and there is remaining air gap in no discharge-channel.Thereby when system works, unavoidably produce pressure oscillation, make the jet pressure that is input in the injector inhomogeneous stable.Secondly, cone seal nut (3) medial extremity is a slab construction, and it is higher to be stressed, make the sealing thread between sealing nut (3) and the cylindrical body (4) be subjected to bigger shear stress, be easy to lose envelope, reduce the pressure of water jet, influence pressure stability, this is an another shortcoming in the design.(5) are the high-pressure water in the accumulator among Fig. 2.
2, abrasive jet device
As shown in Figure 3, high-pressure water (1) is by water under high pressure input shower nozzle (2) ejection, and abrasive flows (5) is owing to spray the negative-pressure siphon effect that produces, enter batch mixing chamber (3) by sidewise hole, form the high speed abrasive water-jet, eject, with the cutting material from abrasive material water output nozzle (6).This injector adopts one-sided plug-in type water sand mixing method, and water sand mixes inhomogeneous, causes expulsion pressure inhomogeneous stable, the one-sided serious wear of nozzle.(4) are case of sprayer among Fig. 2.
3, abrasive material control valve:
As shown in Figure 4, (4) are the import of sand milling material among the figure, adjusting screw(rod) (10), pushing tow cross tapered plug regulating block (6) can move up and down, regulating block (6) top is taper, when regulating block (6) when moving up and down, and the annular space size of advancing between the taper hole of sand interface (5) changes thereupon, thereby regulates the sand flow amount.Under the effect of the negative-pressure siphon power that the powerful high water jet produces, add the thrust of air stream (8), abrasive material is via sand export (11), through sediment transport pipe (referring to Fig. 1), enter injector, quicken by water under high pressure, penetrate by water mill material input shower nozzle, process cutting.The major defect of this kind abrasive material control valve intersects at a right angle with the direction that exports (11) in the import (4) of abrasive material, has so increased the sand flow resistance.Secondly, the import of air stream (8) does not have the device of regulating the air-flow size, easily causes the sand flow congestion phenomenon at sand export (11), and sand flow speed can't be regulated, and has influence on the uniform and stable property of jet output.
At above-mentioned shortcoming, the objective of the invention is to design a kind of novel water jet cutting mach, it has more uniform and stable superhigh pressure jetting stream.
Below technical scheme of the present invention is illustrated one by one.Its structure as shown in Figure 5.From Fig. 5 as seen, the present invention includes super-pressure pump (1), accumulator (11), abrasive material case (17), abrasive material control valve (18), abrasive jet device (13), conveyance conduit (water delivery, sediment transport) and valve (water valve, sand valve).The connected mode of above-mentioned parts is, super-pressure pump (1) join with motor and water inlet pipe respectively (water side that water tank (2), pump (1) only be shown among the figure by the high-pressure water carrier pipe through valve (3), distributor (4), triple valve (6), load valve (7), join with the water inlet end (9) of accumulator (11), accumulator water side (10) joins by the water under high pressure input shower nozzle of water under high pressure conveyance conduit and abrasive jet device (13), abrasive material case (17) via abrasive material control valve (18), connects the abrasive material input port of abrasive jet device by sand delivering pipeline.
As seen from the above, the setting of above-mentioned critical piece of the present invention and connection and prior art are similar.Technological improvement feature of the present invention mainly is the improvement to the jeting effect of abrasive jet device, and this is to realize key of the present invention.The abrasive jet device can eject high velocity jet uniformly and stably, can realize task of the present invention.The jeting effect of abrasive jet device depends primarily on three factors: 1, the structure of injector itself; 2, injector input material state; 3, mixing and the running status of input material in injector.According to the above technical solution of the present invention is described further.
1, the improvement of accumulator structure:
To the requirement of accumulator, mainly be no remaining air gap after the retaining in the requirement device, otherwise the water under high pressure in the input abrasive jet device to fluctuate, influence the stability that the abrasive jet device is exported jet.Accumulator of the present invention comprises cylindrical body, is positioned at the import and the outlet of the seal cover at cylindrical body two ends, high-pressure water, it is characterized in that on the import of said high-pressure water and the cylindrical body that outlet is positioned at accumulator.The inboard of the end cover at said two ends is a sphere, between bulb and the accumulator chamber body sealing ring is arranged.
2, the improvement of abrasive material control valve:
The performance quality of abrasive material control valve has influence on the uniformity and the stability of the abrasive material in the input abrasive jet device, thereby has influence on the stability of abrasive jet device output jet.Abrasive material control valve of the present invention comprises sand inlet, the valve body with circular cone inner chamber, the interface that shakes out, tapered plug adjusting device and air inlet pipe, and first three parts joins successively, and the tapered plug adjusting device is positioned among the valve body, and air inlet pipe is positioned at body wall.It is characterized in that on the said air inlet pipe air flow rate control valve being arranged.Secondly, the said axis that advances sand interface and the interface that shakes out is in same rectilinear direction.
3, the improvement of abrasive jet device:
Abrasive jet device of the present invention comprises water under high pressure input shower nozzle, batch mixing chamber, abrasive material input port, abrasive material water output nozzle, water under high pressure input shower nozzle and abrasive material water output nozzle connect the import and the outlet in batch mixing chamber respectively, the abrasive material input port is positioned at batch mixing chamber sidewall, and upright position, abrasive material input port is higher than the spout of water under high pressure input shower nozzle.There is the input port of input air stream in the batch mixing chamber that it is characterized in that said injector, and it is positioned at the side wall portion in said batch mixing chamber, and is positioned at the top of abrasive material input port, and said batch mixing chamber sidewall inner chamber is designed to accurate parabolic shape.On the air inlet pipe of input air stream, the air flow rate control valve is arranged.
Because design has the air-flow input port above the abrasive material input port of batch mixing chamber sidewall, the upright position that batch mixing chamber sidewall inner chamber is designed to the spout of accurate parabolic shape water under high pressure input shower nozzle is lower than the abrasive material input port, so the abrasive material of injecting from the abrasive material input port is subjected to the downward siphon power of negative pressure generation that high-pressure water jet forms on the one hand, the effect of the spiral air flow of the downward direction that the air-flow that is subjected to importing from the air-flow input port on the other hand forms in the batch mixing chamber, make the abrasive material of injecting in the batch mixing chamber, form the abrasive material spiral flow of downward direction, when abrasive material arrives the injector lower end, under the effect of effect in the venturi, the negative pressure of the water under high pressure that is sprayed into sucks water jet, so that can be equably in injector the energy of water jet be delivered to abrasive particle, abrasive particle can be by even, the stable high speed (being several times as much as velocity of sound) that accelerates to realizes objects of cutting.Design has the air flow rate control valve on the air inlet pipe of abrasive material control valve, the abrasive material control valve advanced sand interface and the axis designs of interface of shaking out in same rectilinear direction, so both reduced the sand flow resistance, the abrasive material flow that helps again to enter the abrasive jet device is adjusted to uniform and stable optimum value.The water inlet and the delivery port of accumulator are designed on cylindrical body, can eliminate the remaining air gap in the accumulator, make the water under high pressure pressure stability of output; Sealed at both ends rubbing surface of end cover is designed to sphere, and the design sealing ring, helps the sealing that keeps good, keeps the output water pressure uniform and stable.
Above-mentioned each technological improvement feature, with the design of the batch mixing chamber of injector the input port of input air stream being arranged is topmost feature.Under the situation that this feature can satisfy,, the uniformity and the stability of output high-pressure spray are improved significantly even select the accumulator or the abrasive material control valve of other structures for use.Certainly, as add accumulator of the present invention and abrasive material control valve, better technique effect is then arranged.
Fig. 1 is the U.S. 11-X of a fluid industrial group type water jet cutting mach structure chart;
Fig. 2 is accumulator structure figure in the 11-X jet cutting machine;
Fig. 3 is an abrasive jet device structure chart in the 11-X jet cutting machine;
Fig. 4 is an abrasive material control valve structure chart in the 11-X jet cutting machine;
Fig. 5 is a water jet cutting mach structure chart of the present invention;
Fig. 6 is accumulator structure figure among the present invention;
Fig. 7 is abrasive material control valve structure chart among the present invention;
Fig. 8 is abrasive jet device structure chart among the present invention;
Below provide embodiments of the invention:
Referring to Fig. 6, the import (2) and the outlet (4) of high-pressure water are arranged on the cylindrical body of accumulator (3), import (2) and outlet (4) can design above sidewall, also can design respectively at upper and lower both direction.Sealing ring between bulb and the accumulator chamber body face adopts blowout prevention ring pad with O type sealing ring, guarantees bore seal.The accumulator cavity is selected ultimate tensile strength σ b 〉=100 kilogram/square millimeter, the steel alloy of percentage elongation δ 〉=15% for use: as 38Cr MOAL, and 33CrN13Mo, 35CrMnMo etc. preferentially select 35CrMnMo for use.The material of spiral end socket uses the 40Cr material to get final product.
The abrasive jet device sees that Fig. 8 shows, (1) is the water under high pressure interface, (2) be the high-pressure water jet device, there is built-in spout (14) its lower end, (3) be clamping nut, (4) are air flow inlet and control valve thereof, and (5) are the abrasive material input port, (6) be the batch mixing chamber, (7) be the abrasive material nozzle block, (8) are the positioning screw cap seat, and (9) are abrasive jet, (10) be the volute spring folder, (11) be inserts, (12) are positioning screw cap, and (13) are positioning pressuring plate, each parts relative position as shown, high-pressure water jet device (2) has built-in nozzle (14), and its spout upright position is positioned at below, abrasive material input port (5), and abrasive material input port (5) are positioned at the sidewall of batch mixing chamber (6), air stream input port (4) also is positioned at the sidewall of batch mixing chamber (6), and is positioned at the top of abrasive material input port (5).Other each parts relative positions as shown.
Injector batch mixing cavity can adopt the 40Cr material, and its intensity of the material of abrasive material nozzle block and case hardness should be greater than the materials in batch mixing chamber, and hardness should reach Hrc=60-62.Abrasive jet can be used carbide alloy Bk3 etc., and hardness should be at Hrc=81-83.
Attitude changes, thereby the sand flow amount is changed thereupon.Wherein awl end cross telescopic head material can adopt steel alloy 40Cr, quenching hardness Hrc=45-48.
Referring to Fig. 5, super-pressure pump among the figure (1) adopts the super-pressure reciprocating pump, once pressurization puts in place, replace hydraulicdriven twice booster pump, 3WCB-4(9134A for example) type pump, directly drive force (forcing) pump by the driven by motor flywheel, the highest pressurization (medium is a water) can reach 4000 kg/cm, and flow is 2 liters/minute.
Below be the test data that the present invention cuts different materials:
| Material | Material thickness (mm) | Nozzle diameter (mm) | Pressure Kg/cm | Cutting speed n/m | Cross section quality |
| Quartz glass | 50 | 1.2(sand blasting is chewed) | 2200 | 120 | Fine |
| 6.5mn alloy- |
12 | ″ ″ | 2200 | 50 | Fine |
| Marble | 20 | ″ ″ | 2200 | 1000 | Fine |
| Rubber | 20 | 0.2(the water nozzle) | 3400 | 6000 | Fine |
| Asbestos board | 6 | ″ ″ | 3400 | 12000 | Fine |
Claims (8)
1, ultra-high pressure water jet universal cutting machine comprises super-pressure pump, accumulator, abrasive material case, abrasive material control valve, abrasive jet device, conveyance conduit and valve; Wherein the abrasive jet device comprises water under high pressure input shower nozzle, batch mixing chamber, abrasive material input port, abrasive material water output nozzle, water under high pressure input shower nozzle and abrasive material water output nozzle connect import of batch mixing chamber and outlet respectively, the abrasive material input port is positioned at batch mixing chamber sidewall, and upright position, abrasive material input port is higher than water under high pressure input shower nozzle spout; Wherein accumulator comprise cylindrical body, be positioned at the end cover at cylindrical body two ends, the import and the outlet of high-pressure water; Wherein the abrasive material control valve comprise have a conical cavity advance sand interface, valve body, the interface that shakes out, tapered plug adjusting device and air inlet pipe, first three parts joins successively, the tapered plug adjusting device is positioned among the valve body, air inlet pipe is positioned at body wall;
Super-pressure pump joins with motor and water inlet pipe respectively, its water side joins through valve and accumulator by the high-pressure water transfer pipeline, the accumulator water side joins through the water under high pressure input shower nozzle of water under high pressure conveyance conduit and abrasive jet device, the abrasive material case through the abrasive material control valve, connects the abrasive material input port of abrasive jet device by sand delivering pipeline;
There is the input port of input air stream in the batch mixing chamber that the invention is characterized in said injector.
2, according to the said cutting machine of claim 1, the sidewall inner chamber that it is characterized in that the batch mixing chamber of said injector is accurate parabolic shape.
3,, it is characterized in that the input port of said input air stream is positioned at the side wall portion in batch mixing chamber according to the said cutting machine of claim 1.
4,, it is characterized in that the input port of said input air stream is positioned at the top of abrasive material input port according to the said cutting machine of claim 3.
5, according to the said cutting machine of claim 1, it is characterized in that the said air inlet pipe that is used for controlling the abrasive material control valve of abrasive jet device batch mixing chamber abrasive material input status, the air flow rate control valve is arranged.
6,, it is characterized in that the axis that advances sand interface and the interface that shakes out of the said abrasive material control valve that is used for controlling abrasive jet device batch mixing chamber abrasive material input status is in same rectilinear direction according to the said cutting machine of claim 1.
7,, it is characterized in that the high-pressure water import of the said accumulator that is used to control abrasive jet device mesohigh water input status and the cylindrical body that outlet is positioned at accumulator according to the said cutting machine of claim 1.
8, according to the said cutting machine of claim 1, it is characterized in that the inboard of the end cover of the said accumulator that is used to control abrasive jet device mesohigh water input status is a sphere, between bulb and the accumulator chamber body sealing ring is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111731 CN1099683A (en) | 1993-09-03 | 1993-09-03 | Ultra-high pressure water jet universal cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111731 CN1099683A (en) | 1993-09-03 | 1993-09-03 | Ultra-high pressure water jet universal cutting machine |
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| Publication Number | Publication Date |
|---|---|
| CN1099683A true CN1099683A (en) | 1995-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93111731 Pending CN1099683A (en) | 1993-09-03 | 1993-09-03 | Ultra-high pressure water jet universal cutting machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100503144C (en) * | 2003-07-17 | 2009-06-24 | 亚米良寿公司 | Device and method for high-pressure water jetting surface cutting |
| CN101347925B (en) * | 2007-07-20 | 2010-12-22 | 三星电机株式会社 | Water jet cutting device |
| WO2015131513A1 (en) * | 2014-03-05 | 2015-09-11 | 中江机电科技江苏有限公司 | Water jet cutting machine |
| CN109499792A (en) * | 2018-11-15 | 2019-03-22 | 江苏瑞和磨料磨具有限公司 | For the recovery device of abrasive in emery cloth production process |
| CN112196573A (en) * | 2020-10-13 | 2021-01-08 | 中铁隧道局集团有限公司 | Water jet pipeline system for rock breaking of tunneling machine |
-
1993
- 1993-09-03 CN CN 93111731 patent/CN1099683A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100503144C (en) * | 2003-07-17 | 2009-06-24 | 亚米良寿公司 | Device and method for high-pressure water jetting surface cutting |
| CN101347925B (en) * | 2007-07-20 | 2010-12-22 | 三星电机株式会社 | Water jet cutting device |
| WO2015131513A1 (en) * | 2014-03-05 | 2015-09-11 | 中江机电科技江苏有限公司 | Water jet cutting machine |
| CN109499792A (en) * | 2018-11-15 | 2019-03-22 | 江苏瑞和磨料磨具有限公司 | For the recovery device of abrasive in emery cloth production process |
| CN112196573A (en) * | 2020-10-13 | 2021-01-08 | 中铁隧道局集团有限公司 | Water jet pipeline system for rock breaking of tunneling machine |
| CN112196573B (en) * | 2020-10-13 | 2022-08-23 | 中铁隧道局集团有限公司 | Water jet pipeline system for rock breaking of tunneling machine |
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| WD01 | Invention patent application deemed withdrawn after publication |