CN104493729A - Jet flow polishing solution supercharging device - Google Patents

Jet flow polishing solution supercharging device Download PDF

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Publication number
CN104493729A
CN104493729A CN201410793793.7A CN201410793793A CN104493729A CN 104493729 A CN104493729 A CN 104493729A CN 201410793793 A CN201410793793 A CN 201410793793A CN 104493729 A CN104493729 A CN 104493729A
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CN
China
Prior art keywords
supercharging
cylinder
pressure
abrasive material
polishing solution
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Pending
Application number
CN201410793793.7A
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Chinese (zh)
Inventor
程广振
贾玉景
方明辉
任永国
顾则明
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Huzhou University
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Huzhou University
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Application filed by Huzhou University filed Critical Huzhou University
Priority to CN201410793793.7A priority Critical patent/CN104493729A/en
Publication of CN104493729A publication Critical patent/CN104493729A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier

Abstract

The invention provides a jet flow polishing solution supercharging device which has high liquid supply pressure, and the capacity of continuously supplying liquid and is convenient to operate and capable of achieving automatic overpressure protection. The jet flow polishing slurry supercharging device comprises a high pressure oil pump station, a low pressure polishing solution pump station, a three-position four-way electromagnetic reversing valve, a supercharging cylinder mechanism and a cycling steady pressure safety mechanism, wherein the three-position four-way electromagnetic reversing valve comprises two electromagnets, and the supercharging cylinder mechanism comprises a supercharging oil cylinder, a magnetic ring, an oil cylinder piston, two supercharging grinding cylinders and two grinding cylinder pistons; the cycling steady pressure safety mechanism comprises two liquid control one-way valve, two pressure relays, two one-way valves, a nozzle, an energy accumulator, a pressure meter and two proximity switches. The jet flow polishing solution supercharging device can enable polishing solution to reach relatively high pressure, and the low pressure polishing solution pump can work under lower pressure, so that the service life of the polishing solution pump is greatly prolonged, the linear reciprocating supercharging cylinder mechanism has the long service life, and the jet flow polishing solution supercharging device is convenient to repair and the pressure of a polishing solution at the nozzle is steady.

Description

Jet Polishing liquid supercharging device
Technical field
The present invention relates to a kind of liquid medium supercharging device, the Jet Polishing liquid supercharging device especially in Jet Polishing processing.
Background technology
Liquid jet polishing is by the polishing fluid directive workpiece containing abrasive grain by custom-designed nozzle, the radial shear effect relying on abrasive jet to impact surface of the work generation realizes material and removes, by controlling the pressure of Liquid inject, direction and residence time etc., can process surface of the work.Domestic and international many scholars expand large quantifier elimination to Abrasive Waterjet Polishing Technology, achieve a series of achievement, domestic research in this respect, possesses certain basis, but there is larger gap with advanced international standard, the theory analysis research of scientific research institutions, institution of higher learning is more, and the research of engineer applied, equipment development is on the low side, the huge advantage of Abrasive Waterjet Polishing Technology fails to give full play of, and the engineering Application Research of Abrasive Waterjet Polishing Technology is significant.
Summary of the invention
The object of this invention is to provide a kind of liquid supply pressure high, feed flow is continuous, easy to operate, can realize the Jet Polishing liquid supercharging device that superpressure is protected automatically.
Jet Polishing liquid supercharging device is by hydraulic oil pumping plant, and low pressure polishing fluid pumping plant, three-position four-way electromagnetic directional valve, pressurization cylinder mechanism, circulation voltage stabilizing release mechanism four part forms.Described three-position four-way electromagnetic directional valve comprises electromagnet YA1 and electromagnet YA2, so that automatic reverse continuously.Described pressurization cylinder mechanism comprises pressurizing cylinder, magnet ring, oil cylinder piston, two supercharging abrasive material cylinders, two abrasive material cylinder pistons.Described circulation voltage stabilizing release mechanism comprises two hydraulic control one-way valves, two pressure switches, two check valves, nozzle, accumulator, Pressure gauge, two proximity switches.Whole device can realize continuous supercharging; when the polishing fluid after supercharging exceedes authorized pressure; supercharging device power supply is cut off in pressure switch action; play safeguard protection effect; the effect of check valve is the high pressure polishing fluid after isolating low pressure polishing fluid and supercharging, and the effect of accumulator is the polishing fluid pressure at stabilized nozzle place.
The composition of pressurization cylinder mechanism is, oil cylinder piston left end is located by the shaft shoulder of piston rod, right-hand member two round nuts are fixed, the excircle of oil cylinder piston inlays magnet ring, two abrasive material cylinder pistons are fixed on the two ends, left and right of piston rod respectively with two round nuts, with n bolt of circumference uniform distribution, two supercharging abrasive material cylinders are fixed in the both ends of the surface of pressurizing cylinder left and right, according to the diameter of pressurizing cylinder, n can get 6,8,10,12, and sealing ring realizes the sealing between supercharging abrasive material cylinder and pressurizing cylinder.Two supercharging abrasive material cylinder end portions process polishing fluid mouth, and the two ends, left and right of pressurizing cylinder process hydraulic fluid port.
The course of work of the present invention and operating procedure: check that each several part is normal, each element is in off-position, start hydraulic oil pumping plant and low pressure polishing fluid pumping plant, the electromagnet YA1 of three-position four-way electromagnetic directional valve is energized, three-position four-way electromagnetic directional valve is in left position, the left end hydraulic fluid port oil-feed of pressurizing cylinder, the oil return of right-hand member hydraulic fluid port, be communicated with hydraulic oil pumping plant by the left position of three-position four-way electromagnetic directional valve, simultaneously, the hydraulic control one-way valve on the left side is opened, the hydraulic control one-way valve on the right is closed, hydraulic oil promotes oil cylinder piston and moves to right, the left chamber of supercharging abrasive material cylinder forms negative pressure, the hydraulic control one-way valve of polishing fluid by opening of low pressure polishing fluid pumping plant, polishing fluid mouth enters the left chamber of supercharging abrasive material cylinder on the left side, supercharging is compressed in the right chamber of supercharging abrasive material cylinder on the right, polishing fluid after supercharging is through polishing fluid mouth, the check valve on the right, spray from nozzle, polishing workpiece.When oil cylinder piston) when moving on to pressurizing cylinder right-hand member, magnet ring is near the proximity switch on the right, proximity switch sends signal, make the electromagnet YA1 power-off on the left side, the electromagnet YA2 on the right is energized, three-position four-way electromagnetic directional valve is in right position, the hydraulic fluid port oil return on the pressurizing cylinder left side, the hydraulic fluid port oil-feed on the right, be communicated with hydraulic oil pumping plant by the right position of three-position four-way electromagnetic directional valve, simultaneously, the hydraulic control one-way valve on the left side is closed, the hydraulic control one-way valve on the right is opened, hydraulic oil promotes oil cylinder piston and moves to left, the right chamber of supercharging abrasive material cylinder on the right forms negative pressure, the polishing fluid of low pressure polishing fluid pumping plant is by the hydraulic control one-way valve on the right, the polishing fluid mouth of the supercharging abrasive material cylinder on the right enters the right chamber of supercharging abrasive material cylinder on the right, supercharging is compressed in the left chamber of supercharging abrasive material cylinder on the left side, polishing fluid after supercharging is through the polishing fluid mouth of the supercharging abrasive material cylinder on the left side, the check valve on the left side, spray from nozzle, polishing workpiece.
When oil cylinder piston moves on to pressurizing cylinder left end, magnet ring is near the proximity switch on the left side, the proximity switch on the left side sends signal, the electromagnet YA1 on the left side is energized, the electromagnet YA2 power-off on the right, three-position four-way electromagnetic directional valve is in left position, the pressurizing cylinder left side hydraulic fluid port oil-feed, the right hydraulic fluid port oil return, be communicated with hydraulic oil pumping plant by the left position of three-position four-way electromagnetic directional valve, meanwhile, the hydraulic control one-way valve on the left side is opened, the hydraulic control one-way valve on the right is closed, repeat aforementioned process, realize the continuous supercharging to polishing fluid, continuous operation.
The supercharging principle of Jet Polishing liquid supercharging device is, according to the dynamic balance relation in pressurization, the pressure of the hydraulic oil that hydraulic oil pumping plant provides is multiplied by the effective area of oil cylinder piston, the pressure equaling the polishing fluid after supercharging is multiplied by the effective area of abrasive material cylinder piston, change the ratio of the effective area of oil cylinder piston and the effective area of abrasive material cylinder piston accordingly, or change the charge oil pressure of hydraulic oil pumping plant, the pressure of the polishing fluid after supercharging can be changed, to meet polishing requirement.
The invention has the beneficial effects as follows; adopt pressurization cylinder mechanism that polishing fluid can be made to reach elevated pressures; low pressure polishing liquid pump can work at low pressures; greatly extend the service life of polishing liquid pump; the straight reciprocating motion pressurization cylinder mechanism life-span is long; easy to maintenance, two abrasive material cylinder can realize continuous high pressure feed flow, and easily realizes superpressure and automatically protect.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.Obviously; described embodiment is only a part of embodiment of invention, instead of whole embodiments, based on embodiments of the invention; those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
Fig. 1 is pressure charging system schematic diagram of the present invention.
Fig. 2 is the structure composition diagram of pressurization cylinder mechanism.
At Fig. 1, in Fig. 2: 1. hydraulic oil pumping plant, 2. low pressure polishing fluid pumping plant, 3. electromagnet YA1, 4. oil cylinder piston, 5. supercharging abrasive material cylinder, 6. abrasive material cylinder piston, 7. hydraulic control one-way valve, 8. pressure switch, 9. check valve, 10. nozzle, 11. accumulators, 12. Pressure gauges, 13. check valves, 14. pressure switches, 15. hydraulic control one-way valves, 16. supercharging abrasive material cylinders, 17. abrasive material cylinder pistons, 18. pressurizing cylinders, 19. electromagnet YA2, 20. three-position four-way electromagnetic directional valve, 21. proximity switches, 22. magnet rings, 23. proximity switches, 24. round nuts, 25. sealing rings, 26. bolts, 27. round nuts, 28. piston rods, 29. oil cylinder covers, 30. bolts, 31. oil cylinder covers, 32. round nuts, a. hydraulic fluid port, b. hydraulic fluid port, c. polishing fluid mouth, d. polishing fluid mouth.
Detailed description of the invention
Pressure charging system in FIG, by hydraulic oil pumping plant (1), low pressure polishing fluid pumping plant (2), three-position four-way electromagnetic directional valve (20), pressurization cylinder mechanism, circulation voltage stabilizing release mechanism four part forms.Described three-position four-way electromagnetic directional valve (20) comprises electromagnet YA1(3) and electromagnet YA2(19), so that automatic reverse continuously.Described pressurization cylinder mechanism comprises oil cylinder piston (4), supercharging abrasive material cylinder (5), abrasive material cylinder piston (6), supercharging abrasive material cylinder (16), abrasive material cylinder piston (17), pressurizing cylinder (18), magnet ring (22).Described circulation voltage stabilizing release mechanism comprises hydraulic control one-way valve (7), pressure switch (8), check valve (9), nozzle (10), accumulator (11), Pressure gauge (12), check valve (13), pressure switch (14), hydraulic control one-way valve (15), proximity switch (21), proximity switch (23).When the polishing fluid after supercharging exceedes authorized pressure, pressure switch, supercharging device power supply is cut off in pressure switch (8) or pressure switch (14) action, plays safeguard protection effect.The effect of check valve (9) and check valve (13) is the high pressure polishing fluid after isolating low pressure polishing fluid and supercharging, and nozzle (10) place arranges accumulator (11), in order to the polishing fluid pressure at stabilized nozzle (10) place.
In the pressurization cylinder mechanism of Fig. 2, oil cylinder piston (4) left end is located by the shaft shoulder of piston rod (28), right-hand member is fixed with two round nuts (27), the excircle of oil cylinder piston (4) is inlayed magnet ring (22), abrasive material cylinder piston (6) is fixed on the left end of piston rod (28) with two round nuts (24), abrasive material cylinder piston (17) is fixed on the right-hand member of piston rod (28) with two round nuts (32), with n bolt (26) of circumference uniform distribution, supercharging abrasive material cylinder (5) is fixed on pressurizing cylinder (18) left side, with n bolt (30) of circumference uniform distribution, supercharging abrasive material cylinder (16) and oil cylinder cover (29) are fixed on pressurizing cylinder (18) right side, according to the diameter of pressurizing cylinder (18), n can get 6, 8, 10, 12, sealing ring (25) realizes the sealing between supercharging abrasive material cylinder (5) and pressurizing cylinder (18), sealing ring (31) realizes the sealing between supercharging abrasive material cylinder (16) and pressurizing cylinder (18).Supercharging abrasive material cylinder (5) left end processes polishing fluid mouth (c), and supercharging abrasive material cylinder (16) right-hand member processes polishing fluid mouth (d), and the left end of pressurizing cylinder (18) processes hydraulic fluid port (a), and right-hand member processes hydraulic fluid port (b).
In FIG, the course of work of the present invention and operating procedure are: check that each several part is normal, each element is in off-position, start hydraulic oil pumping plant (1) and low pressure polishing fluid pumping plant (2), make electromagnet YA1(3) energising, three-position four-way electromagnetic directional valve (20) is in left position, hydraulic fluid port (a) oil-feed of pressurizing cylinder (18), hydraulic fluid port (b) oil return, be communicated with hydraulic oil pumping plant (1) by the left position of three-position four-way electromagnetic directional valve (20), simultaneously, hydraulic control one-way valve (7) is opened, hydraulic control one-way valve (15) is closed, hydraulic oil promotes oil cylinder piston (4) and moves to right, the left chamber of supercharging abrasive material cylinder (5) forms negative pressure, the polishing fluid of low pressure polishing fluid pumping plant (2) is by hydraulic control one-way valve (7), polishing fluid mouth (c) enters supercharging abrasive material cylinder (5) left chamber, supercharging is compressed in supercharging abrasive material cylinder (16) right chamber, polishing fluid after supercharging is through polishing fluid mouth (d), check valve (13), spray from nozzle (10), polishing workpiece.When oil cylinder piston (4) moves on to pressurizing cylinder (18) right-hand member, magnet ring (22) is near proximity switch (21), proximity switch (21) sends signal, make electromagnet YA1(3) power-off, electromagnet YA2(19) energising, three-position four-way electromagnetic directional valve (20) is in right position, hydraulic fluid port (a) oil return of pressurizing cylinder (18), hydraulic fluid port (b) oil-feed, be communicated with hydraulic oil pumping plant (1) by the right position of three-position four-way electromagnetic directional valve (20), simultaneously, hydraulic control one-way valve (7) is closed, hydraulic control one-way valve (15) is opened, hydraulic oil promotes oil cylinder piston (4) and moves to left, the right chamber of supercharging abrasive material cylinder (16) forms negative pressure, the polishing fluid of low pressure polishing fluid pumping plant (2) is by hydraulic control one-way valve (15), polishing fluid mouth (d) enters supercharging abrasive material cylinder (16) right chamber, supercharging is compressed in supercharging abrasive material cylinder (5) left chamber, polishing fluid after supercharging is through polishing fluid mouth (c), check valve (9), spray from nozzle (10), polishing workpiece.
When oil cylinder piston (4) moves on to pressurizing cylinder (18) left end, magnet ring (22) is near proximity switch (23), proximity switch (23) sends signal, make electromagnet YA1(3) energising, electromagnet YA2(19) power-off, three-position four-way electromagnetic directional valve (20) is in left position, hydraulic fluid port (a) oil-feed of pressurizing cylinder (18), hydraulic fluid port (b) oil return, be communicated with hydraulic oil pumping plant (1) by the left position of three-position four-way electromagnetic directional valve (20), simultaneously, hydraulic control one-way valve (7) is opened, hydraulic control one-way valve (15) is closed, repeat aforementioned process, realize the continuous supercharging to polishing fluid, continuous operation.
In a word, proximity switch (21), magnet ring (22), proximity switch (23) send signal, control electromagnet YA1(3), electromagnet YA2(19) energising power-off, coordinate hydraulic control one-way valve (7), hydraulic control one-way valve (15), realize the continuous reciprocating motion of pressurization cylinder mechanism, reach continuous supercharging, system continuous operation.

Claims (4)

1. a Jet Polishing liquid supercharging device, by hydraulic oil pumping plant (1), low pressure polishing fluid pumping plant (2), three-position four-way electromagnetic directional valve (20), pressurization cylinder mechanism, circulation voltage stabilizing release mechanism four part forms, and it is characterized in that: described three-position four-way electromagnetic directional valve (20) comprises electromagnet YA1(3) and electromagnet YA2(19), so that automatic reverse continuously, in pressurization cylinder mechanism, oil cylinder piston (4) left end is located by the shaft shoulder of piston rod (28), right-hand member is fixed with two round nuts (27), the excircle of oil cylinder piston (4) is inlayed magnet ring (22), abrasive material cylinder piston (6) is fixed on the left end of piston rod (28) with two round nuts (24), abrasive material cylinder piston (17) is fixed on the right-hand member of piston rod (28) with two round nuts (32), with n bolt (26) of circumference uniform distribution, supercharging abrasive material cylinder (5) is fixed on pressurizing cylinder (18) left side, with n bolt (30) of circumference uniform distribution, supercharging abrasive material cylinder (16) and oil cylinder cover (29) are fixed on pressurizing cylinder (18) right side, described circulation voltage stabilizing release mechanism comprises hydraulic control one-way valve (7), pressure switch (8), check valve (9), nozzle (10), accumulator (11), Pressure gauge (12), check valve (13), pressure switch (14), hydraulic control one-way valve (15), proximity switch (21), proximity switch (23).
2. Jet Polishing liquid supercharging device according to claim 1, it is characterized in that: sealing ring (25) realizes the sealing between supercharging abrasive material cylinder (5) and pressurizing cylinder (18), sealing ring (31) realizes the sealing between supercharging abrasive material cylinder (16) and pressurizing cylinder (18).
3. Jet Polishing liquid supercharging device according to claim 1, is characterized in that: nozzle (10) place arranges accumulator (11), in order to the polishing fluid pressure at stabilized nozzle (10) place.
4. Jet Polishing liquid supercharging device according to claim 1, it is characterized in that: proximity switch (21), magnet ring (22), proximity switch (23) send signal, control electromagnet YA1(3), electromagnet YA2(19) energising power-off, coordinate hydraulic control one-way valve (7), hydraulic control one-way valve (15), realize the continuous reciprocating motion of pressurization cylinder mechanism, reach continuous supercharging, system continuous operation.
CN201410793793.7A 2014-12-21 2014-12-21 Jet flow polishing solution supercharging device Pending CN104493729A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106186131A (en) * 2016-08-31 2016-12-07 扬州市江都永坚有限公司 A kind of desalinization atomising device
CN106985081A (en) * 2017-03-27 2017-07-28 宁波工程学院 A kind of jet flow sand washing refines the device and method of hole wall
CN107336144A (en) * 2017-08-05 2017-11-10 苏州方德锐精密机电科技有限公司 A kind of vertical Reciprocatory abrasive Flow polishing machine mechanical structure
CN107350957A (en) * 2017-08-05 2017-11-17 苏州方德锐精密机电科技有限公司 A kind of horizontal Reciprocatory abrasive Flow polishing machine mechanical structure
WO2018103284A1 (en) * 2016-12-08 2018-06-14 中国矿业大学 New-type slurry abrasive jet system
CN110987699A (en) * 2019-12-04 2020-04-10 郑州大学 Booster cylinder type liquid-solid mixed jet flow experimental device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2182889Y (en) * 1993-08-31 1994-11-16 向玉国 Double direction and pressure-increasing cylinder
CN1230637A (en) * 1998-04-02 1999-10-06 中国科学院金属腐蚀与防护研究所 Two-way supercharger
CN102430983A (en) * 2011-11-24 2012-05-02 西南科技大学 Two-side material supply type high-pressure grinding material water jet flow polishing device
CN202326059U (en) * 2011-11-02 2012-07-11 天津市天大银泰科技有限公司 Double-acting pressurizing gas-liquid composite pump
CN104074811A (en) * 2014-07-03 2014-10-01 天津优瑞纳斯液压机械有限公司 Continuous booster station
CN204339599U (en) * 2014-12-21 2015-05-20 湖州师范学院 jet polishing liquid supercharging device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2182889Y (en) * 1993-08-31 1994-11-16 向玉国 Double direction and pressure-increasing cylinder
CN1230637A (en) * 1998-04-02 1999-10-06 中国科学院金属腐蚀与防护研究所 Two-way supercharger
CN202326059U (en) * 2011-11-02 2012-07-11 天津市天大银泰科技有限公司 Double-acting pressurizing gas-liquid composite pump
CN102430983A (en) * 2011-11-24 2012-05-02 西南科技大学 Two-side material supply type high-pressure grinding material water jet flow polishing device
CN104074811A (en) * 2014-07-03 2014-10-01 天津优瑞纳斯液压机械有限公司 Continuous booster station
CN204339599U (en) * 2014-12-21 2015-05-20 湖州师范学院 jet polishing liquid supercharging device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘林枝: "液体射流研磨循环系统设计", 《机械》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106186131A (en) * 2016-08-31 2016-12-07 扬州市江都永坚有限公司 A kind of desalinization atomising device
WO2018103284A1 (en) * 2016-12-08 2018-06-14 中国矿业大学 New-type slurry abrasive jet system
CN106985081A (en) * 2017-03-27 2017-07-28 宁波工程学院 A kind of jet flow sand washing refines the device and method of hole wall
CN106985081B (en) * 2017-03-27 2019-09-06 宁波工程学院 A kind of device and method of jet flow sand washing fine grinding hole wall
CN107336144A (en) * 2017-08-05 2017-11-10 苏州方德锐精密机电科技有限公司 A kind of vertical Reciprocatory abrasive Flow polishing machine mechanical structure
CN107350957A (en) * 2017-08-05 2017-11-17 苏州方德锐精密机电科技有限公司 A kind of horizontal Reciprocatory abrasive Flow polishing machine mechanical structure
CN110987699A (en) * 2019-12-04 2020-04-10 郑州大学 Booster cylinder type liquid-solid mixed jet flow experimental device

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