CN102418798A - Pneumatic two-position four-way reversing valve - Google Patents
Pneumatic two-position four-way reversing valve Download PDFInfo
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- CN102418798A CN102418798A CN2011101621195A CN201110162119A CN102418798A CN 102418798 A CN102418798 A CN 102418798A CN 2011101621195 A CN2011101621195 A CN 2011101621195A CN 201110162119 A CN201110162119 A CN 201110162119A CN 102418798 A CN102418798 A CN 102418798A
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- end cap
- pneumatic
- air
- reversing piston
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Abstract
The invention relates to a pneumatic two-position four-way reversing valve. A traditional built-in two-position four-way reversing valve of a pneumatic motor can stop at a dead-point position in the operating process, i.e. an air-inlet cavity of an air-distributing chamber is directly communicated with an air-discharging opening through a slide block to cause a spraying machine to stop working, and a dead-point phenomenon is strictly prohibited to appear on the spraying machine on an automatic spraying flow line. In the invention, aiming at the deficiency, on the basis of a traditional two-position four-way valve, permanent magnets are inlaid in a reversing piston, an upper end-cover hole and a lower end-cover hole, and the dead-point difficult problem of the two-position four-way valve appearing in the reversing process is solved through the change of magnet forces and friction forces.
Description
Technical field
The present invention relates to the reciprocating type pneumatic motor of a kind of air-driven type airless sprayer, spreader or other purposes, relate in particular to the built-in Pneumatic two-position four-way selector valve of its pneumatic motor.
Background technique
Existing air-driven type airless sprayer or air-driven type spreader be made up of pneumatic motor and coating oil hydraulic pump, and pneumatic motor are the cores of air-driven type airless sprayer, for the air-driven type airless sprayer provides reliable power.The pneumatic motor of airless sprayer gets into pressurized air through the distribution changement incessantly from upper chamber of air cylinder or cavity of resorption, promote piston and move up or down, and the pressurized air in lower chamber of air cylinder or the epicoele must instantaneously enter atmosphere through relief opening.The two-position four way change valve that existing pneumatic motor is built-in; In running, can be parked in " dead point " position; The air-inlet cavity that is gas distributing chamber directly is communicated with relief opening through slide block, causes spraying machine to quit work, and is forbidding spraying machine " dead point " phenomenon to occur on the spray stream waterline automatically.
Summary of the invention
The present invention is directed to above-mentioned deficiency, a kind of Pneumatic two-position four-way valve that " dead point " difficult problem appears in commutation process that overcomes is provided.
A kind of Pneumatic two-position four-way selector valve that is built in the pneumatic motor comprises reversing piston, upper end cap, lower end cap, inlays permanent magnet at reversing piston and upper end cap, lower end cap in the hole.
For better effect: reversing piston is arranged between upper end cap, the lower end cap; Upper end cap, lower end cap are fixed on the cylinder.
Reversing piston reaches upper end cap in the stomidium up and down, lower end cap is inlayed permanent magnet in the hole, and in the hole, jump ring is set.
Slide block is stuck in the reversing piston groove;
Slide plate is fixed on the distribution piece, and the distribution piece is screwed at cylinder, and lower cover of air cylinder is screwed on cylinder.
The present invention inlays permanent magnet at reversing piston and upper end cap, lower end cap in the hole on the basis of existing two-position four-way valve, the variation through magnet power, frictional force overcomes two-position four-way valve and " dead point " difficult problem occurs at commutation process.
When reversing piston when upper, last pilot valve suction port and reversing piston bottom together with, promptly there is pressurized air the reversing piston lower end, reversing piston top and atmosphere.The reversing piston upper-end surface contacts with upper end cap, and reversing piston upper-end surface magnet and upper end cap magnet attract each other; When cylinder piston moves upward, contact with guide's spool, and continue compression guide spool, the upper end is through guide's valve body switching gas circuit, and A and B are obstructed, and B and pressurized air are connected, C and D gas circuit and atmosphere.Pressurized air promotes reversing piston and moves downward; Along with the continuous variation of move distance, the suction of upper end magnet is more and more littler, and the suction of lower end is increasing; And frictional force becomes kinetic friction from static friction; Resistance to motion also diminishes suddenly, thereby makes piston under the stack of multiple power, can't rest on the neutral position, thereby has overcome " dead point " problem of reversing piston.Reversing piston drives slide block movement, realizes the switching of distribution piece gas circuit, and pressurized air entering cylinder piston top, and the pressurized air of cylinder piston bottom is communicated with F, enters atmosphere.Reciprocal reversing principle is same as described above, and just gas circuit is reverse.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done to detail further:
Fig. 1 is air-driven type two-position four way change valve one structural representation of the present invention.
Embodiment
See Fig. 1, reversing piston 10 is arranged between upper end cap 11, the lower end cap 4, and reversing piston 10 slides up and down in cylinder 1 hole; Upper end cap 11, lower end cap are fixed on the cylinder 1; Slide plate 9 is fixed on the distribution piece 7, and distribution piece 7 is screwed at cylinder 1; Lower cover of air cylinder 3 is screwed on cylinder 1; Inlay permanent magnet 5 at reversing piston 2 and upper end cap 11, lower end cap in 4 holes, and prevent that with jump ring 6 permanent magnet 5 from skidding off, two permanent magnet 5 assembling forms are to inhale mutually in twos; Slide block 8 is stuck in reversing piston 10 grooves.
E is the total suction port of pressurized air, and pressurized air enters into lower chamber of air cylinder or epicoele through distribution piece 7, and reversing piston 10 upper and lower cavities get into pressurized air simultaneously, and cylinder piston 2 promotes cylinder piston 2 and moves up or down under compressed-air actuated effect.When moving to the end, upper end; Cylinder piston promotes pilot valve work; The pressurized air of reversing piston 10 epicoeles again to last pilot valve exhaust port A, is communicated with atmosphere through last pilot valve inlet hole B, simultaneously because reversing piston 10 cavity of resorptions are connected with pressurized air always; Reversing piston 10 receives two power, pressurized air power and magnetic force simultaneously.When pressurized air greater than magnetic force; Promote reversing piston 10 drive slide blocks 8 and move upward, along with the variation of move distance, the magnetic force of bottom is more and more littler; And the magnetic force on reversing piston 10 tops is increasing; Pressurized air, under the effect of lower magnetic force and three kinds of power of frictional force, make reversing piston 2 can't rest on air-inlet cavity that gas distributing chamber promptly appears in the neutral position through slide block 8 and the situation that relief opening F directly is communicated with, promptly overcome switching-over " dead point " problem.When reversing piston 10 moves to the upper end, switch the gas circuit of cylinder 1, i.e. epicoele air inlet, cavity of resorption is connected atmosphere through the F mouth.So go round and begin again, realized the to-and-fro motion of pneumatic motor.
Claims (5)
1. one kind is built in the interior Pneumatic two-position four-way selector valve of pneumatic motor; Comprise cylinder (1), reversing piston (10), upper end cap (11), lower end cap (4), it is characterized in that: inlay permanent magnet (5) in the hole at reversing piston (10) and upper end cap (11), lower end cap (4).
2. Pneumatic two-position four-way selector valve as claimed in claim 1 is characterized in that: reversing piston (10) is arranged between upper end cap (11), the lower end cap (4); Upper end cap (11), lower end cap (4) are fixed on the cylinder (1).
3. Pneumatic two-position four-way selector valve as claimed in claim 1 is characterized in that: reversing piston (10) reaches upper end cap (11) in the stomidium up and down, lower end cap (4) is inlayed permanent magnet (5) in the hole, and jump ring (6) is set in the hole.
4. Pneumatic two-position four-way selector valve as claimed in claim 1 is characterized in that: slide block (8) is stuck in reversing piston (10) groove.
5. according to claim 1 or claim 2 Pneumatic two-position four-way selector valve, it is characterized in that: slide plate (9) is fixed on the distribution piece (7), and distribution piece (7) is screwed in cylinder (1), and lower cover of air cylinder (3) is screwed on cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101621195A CN102418798A (en) | 2011-06-16 | 2011-06-16 | Pneumatic two-position four-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101621195A CN102418798A (en) | 2011-06-16 | 2011-06-16 | Pneumatic two-position four-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102418798A true CN102418798A (en) | 2012-04-18 |
Family
ID=45943358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101621195A Pending CN102418798A (en) | 2011-06-16 | 2011-06-16 | Pneumatic two-position four-way reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102418798A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291957A (en) * | 2012-02-24 | 2013-09-11 | 浙江三花制冷集团有限公司 | Main valve of four-way reversing valve and four-way reversing valve provided with main valve |
| CN104454013A (en) * | 2014-12-02 | 2015-03-25 | 重庆国另机械有限公司 | Automatic reversing mechanism for pneumatic motor |
| CN106895176A (en) * | 2017-04-14 | 2017-06-27 | 宁波索诺工业自控设备有限公司 | Two five-way ceramic slide type magnetic valves |
| CN107109940A (en) * | 2014-12-26 | 2017-08-29 | 艾格赛尔工业公司 | Air motor and the pump for including this motor |
| CN110360339A (en) * | 2019-08-09 | 2019-10-22 | 成都百分之三科技有限公司 | Automatic reversing mechanism |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4840198A (en) * | 1987-01-14 | 1989-06-20 | Herion-Werke Kg | Control valve |
| US5174731A (en) * | 1989-01-12 | 1992-12-29 | DEPA Gesellschaft fur Verfahrenstecnik mit beschrankter Haftung | Method and arrangement for controlling a compressed air-operated double diaphragm pump |
| US20040000347A1 (en) * | 2002-06-27 | 2004-01-01 | Agency For Defense Development | Flow force compensating spool valve and hydraulic valve, pneumatic valve, three-way control valve, and four-way control valve using the same |
| CN1924416A (en) * | 2005-08-31 | 2007-03-07 | 费斯托合资公司 | Pilot operated impulse valve |
| DE102006050651B3 (en) * | 2006-10-24 | 2008-03-27 | Bosch Rexroth Ag | Pneumatic five/three-way valve for controlling e.g. pneumatic cylinders, has valve gate arranged in housing, where middle resting position is realized by spring units that are arranged at both sides of valve gate and between spring plates |
| DE102008008314A1 (en) * | 2008-02-07 | 2009-08-13 | Robert Bosch Gmbh | Pilot-controlled pneumatic slide valve has longitudinally sliding valve slide, where front side of valve slide facing control chamber, has radially exterior recess for placing seal ring |
| CN201297430Y (en) * | 2008-11-01 | 2009-08-26 | 合肥中辰轻工机械有限公司 | Pneumatic permanent magnet filling valve |
| CN101680467A (en) * | 2007-04-10 | 2010-03-24 | 伊利诺斯工具制品有限公司 | valve with magnetic detents |
| CN101943277A (en) * | 2010-08-13 | 2011-01-12 | 陆桂义 | Pneumatic two-position four-way slide valve |
| CN202082427U (en) * | 2011-06-16 | 2011-12-21 | 重庆长江涂装设备有限责任公司 | Pneumatic two-position four-way change valve |
-
2011
- 2011-06-16 CN CN2011101621195A patent/CN102418798A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4840198A (en) * | 1987-01-14 | 1989-06-20 | Herion-Werke Kg | Control valve |
| US5174731A (en) * | 1989-01-12 | 1992-12-29 | DEPA Gesellschaft fur Verfahrenstecnik mit beschrankter Haftung | Method and arrangement for controlling a compressed air-operated double diaphragm pump |
| US20040000347A1 (en) * | 2002-06-27 | 2004-01-01 | Agency For Defense Development | Flow force compensating spool valve and hydraulic valve, pneumatic valve, three-way control valve, and four-way control valve using the same |
| CN1924416A (en) * | 2005-08-31 | 2007-03-07 | 费斯托合资公司 | Pilot operated impulse valve |
| DE102006050651B3 (en) * | 2006-10-24 | 2008-03-27 | Bosch Rexroth Ag | Pneumatic five/three-way valve for controlling e.g. pneumatic cylinders, has valve gate arranged in housing, where middle resting position is realized by spring units that are arranged at both sides of valve gate and between spring plates |
| CN101680467A (en) * | 2007-04-10 | 2010-03-24 | 伊利诺斯工具制品有限公司 | valve with magnetic detents |
| DE102008008314A1 (en) * | 2008-02-07 | 2009-08-13 | Robert Bosch Gmbh | Pilot-controlled pneumatic slide valve has longitudinally sliding valve slide, where front side of valve slide facing control chamber, has radially exterior recess for placing seal ring |
| CN201297430Y (en) * | 2008-11-01 | 2009-08-26 | 合肥中辰轻工机械有限公司 | Pneumatic permanent magnet filling valve |
| CN101943277A (en) * | 2010-08-13 | 2011-01-12 | 陆桂义 | Pneumatic two-position four-way slide valve |
| CN202082427U (en) * | 2011-06-16 | 2011-12-21 | 重庆长江涂装设备有限责任公司 | Pneumatic two-position four-way change valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291957A (en) * | 2012-02-24 | 2013-09-11 | 浙江三花制冷集团有限公司 | Main valve of four-way reversing valve and four-way reversing valve provided with main valve |
| CN104454013A (en) * | 2014-12-02 | 2015-03-25 | 重庆国另机械有限公司 | Automatic reversing mechanism for pneumatic motor |
| CN107109940A (en) * | 2014-12-26 | 2017-08-29 | 艾格赛尔工业公司 | Air motor and the pump for including this motor |
| CN107109940B (en) * | 2014-12-26 | 2020-01-31 | 艾格赛尔工业公司 | Air motor and pump comprising such a motor |
| CN106895176A (en) * | 2017-04-14 | 2017-06-27 | 宁波索诺工业自控设备有限公司 | Two five-way ceramic slide type magnetic valves |
| CN106895176B (en) * | 2017-04-14 | 2022-11-25 | 宁波索诺工业自控设备有限公司 | Two-position five-way ceramic sliding plate type electromagnetic valve |
| CN110360339A (en) * | 2019-08-09 | 2019-10-22 | 成都百分之三科技有限公司 | Automatic reversing mechanism |
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Application publication date: 20120418 |