CN101649917B - Two-position three-way valve without back pressure - Google Patents
Two-position three-way valve without back pressure Download PDFInfo
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- CN101649917B CN101649917B CN 200810073749 CN200810073749A CN101649917B CN 101649917 B CN101649917 B CN 101649917B CN 200810073749 CN200810073749 CN 200810073749 CN 200810073749 A CN200810073749 A CN 200810073749A CN 101649917 B CN101649917 B CN 101649917B
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Abstract
The invention relates to a two-position three-way valve without back pressure, which comprises a control plunger with an oil inlet channel and an oil return channel, a control valve outer body with an oil return channel, and a control valve axis, wherein the control plunger is a variable-diameter axial part; the control valve outer body is a cylinder with stepwise through holes; the control valve axis is an variable-diameter axial part of which a central hole is three levels of stepwise through holes; the control plunger, the control valve axis and the control valve outer body are sequentially arranged; a fit surface of the control plunger and the control valve outer body is a high-flatness plane; end faces of all the parts are closely connected to form a seal; an upper end cylinder of the control plunger and an inner circular hole of the control valve axis form a coupling; when the control plunger, the control valve outer body and the control valve axis are arranged, the coaxiality is ensured, so that the control plunger can move flexibly; the stroke of the control plunger can be changed by changing the height of the control valve outer body; and the axial pressure of the control valve axis is basically balanced. The two-position three-way valve without the back pressure can easily realize the control of the flow direction of high-pressure liquid with small force under the condition of high liquid pressure and has a scientific, simple and reliable structure.
Description
Technical field:
The present invention relates to a kind of control valve parts, particularly a kind ofly be applicable in the liquid high pressure situation two position three-way valve that the control flow direction is used.
Background technique:
At present, the two position three-way valve that uses in the oil injecting nozzle of electric-controlled fuel injector exists back pressure to produce larger active force, needs larger control force to control.
Summary of the invention:
The purpose of this invention is to provide a kind of two-position three-way valve without back pressure, it can make more easily realizes with low-force the highly pressurised liquid flow direction being controlled in the liquid high pressure situation, to solve the existing above-mentioned deficiency of present two position three-way valve.
The technological scheme that addresses the above problem is:
A kind of two-position three-way valve without back pressure, comprise that having working solution on it advances, go out the control plunger of passage, have control valve ectosome and the control valve shaft of working solution flow pass on it, described control plunger is not isometrical shaft-like part, described control valve ectosome is the cylindrical body with the stepped shaft through hole, described control valve shaft is that a center hole is the not isometrical shaft-like part of 3 grades of stepped shaft through holes, be conical surface between control valve shaft large-diameter section and the control valve shaft small axle diameter, conical surface is arranged at the bottom of the large end of stepped shaft through hole of control valve shaft, the control plunger, control valve shaft and control valve ectosome are installed from bottom to up successively, the control plunger is put into large end and its composition couple and conical surface cone match bottom it of control valve shaft stepped shaft through hole, return spring places the stage casing of control valve shaft stepped shaft through hole to withstand the control plunger, the conical surface cone match of the step of the stepped shaft through hole of control valve shaft conical surface and control valve ectosome, the fitting surface of control plunger and control valve ectosome is high planeness plane, each part end face close proximity, form sealing, control plunger upper end cylinder forms couple with control valve shaft inner circle hole, the control plunger, the control valve ectosome, control valve shaft coaxality is installed, the control plunger can be mobile flexibly in control valve shaft stepped shaft through hole, the small axle diameter of control valve shaft passes the small end of control valve ectosome stepped shaft through hole, and flows out the working solution passage III of usefulness with the circular working solution of its formation.
Because adopt technique scheme, the present invention has following beneficial effect:
One, can in the liquid high pressure situation, more easily realize carrying out flow direction control at low-force.
Because two position three-way valve of the present invention is by the shaft-like part control plunger that connects successively, valve ectosome processed and control valve shaft form, the fitting surface of control plunger and control valve ectosome is high planeness plane, each part end face close proximity, form sealing, control plunger upper end cylinder forms couple with control valve shaft inner circle hole, inner circle and the conical surface of control plunger are the high-axiality bodies, the control plunger, the control valve ectosome, the control valve shaft guarantees coaxality when installing, so that the control plunger can move flexibly, the height that changes the control valve ectosome can change the stroke of control plunger, the axial pressure that control plunger and control valve shaft are subject to is in a basic balance, thereby can more easily realize carrying out flow direction control at low-force in the liquid high pressure situation.
Two, scientific structure, simple, reliable, processing and fabricating is convenient, and cost is low.
The present invention successively order installs control plunger, control valve shaft, control valve ectosome, each part end face close proximity, form sealing, control plunger, control valve ectosome, control valve shaft guarantee coaxality when installing, so that the control plunger can move flexibly, the height that changes the control valve ectosome can change the stroke of control plunger.It is simple in structure, has reduced cost and manufacture difficulty.
Three, of many uses, easy to use.
Structure two-position three-way valve without back pressure of the present invention not only is applicable to the automatic control of diesel engine oil injecting nozzle mesohigh oil spurts, also being applicable to other need to realize with low-force the highly pressurised liquid flow direction being controlled in the liquid high pressure situation, and, the height that changes adjustment block can change the stroke of control plunger, and is easy to use.
Description of drawings:
Fig. 1-1～Fig. 1-3: embodiment's one described two-position three-way valve without back pressure overall structure schematic diagram:
Fig. 1-1: the control valve shaft state that mediates,
Fig. 1-2: under being in, the control valve shaft closes state,
Fig. 1-3: the control valve shaft is in the state of closing;
Fig. 2: control piston structure schematic diagram;
Fig. 3: control valve ectosome structural representation, the local enlarged diagram of the A section of Fig. 3-1: Fig. 3;
Fig. 4: control valve axle construction schematic diagram.
Among the figure:
1-controls plunger, 11-large-diameter base, 12-straight hole-working solution passage II, 13-small axle diameter section, 131-control plunger conical surface, 14-small axle diameter section I, 141-horizontal hole, 15-small axle diameter section II, 16-central blind hole;
2-control valve ectosome, the stepped shaft through hole of 21-control valve ectosome, the conical surface on the 22-control valve ectosome stepped shaft through hole;
3-controls valve shaft, 31-control valve shaft center hole-stepped shaft through hole, 32-control valve shaft large-diameter section, 33-control valve conical surface of shaft; 34-control valve shaft small axle diameter section; The 4-return spring.
Embodiment:
Embodiment one:
A kind of two-position three-way valve without back pressure comprises control plunger 1, control valve ectosome 2, control valve shaft 3 and return spring 4
(referring to Fig. 1-1);
Described control plunger 1 is that an end is the not isometrical shaft-like part of large-diameter base 11, be small axle diameter section I 14 between small axle diameter section 15 and time small axle diameter section 13, small axle diameter section I 14 has horizontal hole 141, have the T font working solution passage I that consisted of by central blind hole 16 and horizontal hole 141 on the large-diameter base, the straight hole road 12 parallel with central blind hole 16 forms working solution passage II, is conical surface 131 transition (referring to Fig. 2) between inferior small axle diameter section 13 and the small axle diameter section I 14;
Described control valve ectosome 2 is the cylindrical bodys with stepped shaft through hole 21, and the reducing place of this stepped shaft through hole 21 is conical surface 22 (referring to Fig. 3～Fig. 3-1);
Described control valve shaft 3 is that a center hole is the not isometrical shaft-like part of 3 grades of stepped shaft through holes 31, be conical surface 33 between control valve shaft large-diameter section 32 and the control valve shaft small axle diameter 34, the conical surface 311 (referring to Fig. 4) is arranged at the bottom of the stepped shaft through hole 31 large ends of control valve shaft;
Control plunger 1, control valve shaft 3 and control valve ectosome 2 are installed from bottom to up successively, control plunger 1 is put into large end and its composition couple and conical surface 311 cone match bottom it of control valve shaft stepped shaft through hole 31, return spring 4 places the stage casing of control valve shaft stepped shaft through hole 31 to withstand control plunger 1, conical surface 22 cone match of the step of the stepped shaft through hole 21 of control valve shaft conical surface 33 and control valve ectosome 2, the small axle diameter 34 of control valve shaft passes the small end of control valve ectosome stepped shaft through hole 21, and flow out the working solution passage III of usefulness with the circular working solution of its formation, the fitting surface of control plunger and control valve ectosome is high planeness plane, each part end face close proximity, form sealing, control plunger upper end cylinder forms couple with control valve shaft inner circle hole, the control plunger, the control valve ectosome, control valve shaft coaxality is installed, so that the control plunger can be in the 31 interior flexible movements of control valve shaft stepped shaft through hole, the axial pressure of control valve shaft is in a basic balance.
Working procedure:
Under normal circumstances, under return spring 4 effects, control valve shaft 3 is in conical surface 22 conical surface drive fit closed states of control valve shaft conical surface 33 and the step of the stepped shaft through hole 21 of control valve ectosome 2, and working solution is by connecting (referring to Fig. 1-3) into and out of working solution passage II 12 and T font working solution passage I on it on the control plunger 1; When being subjected to External Force Acting, it is closed that control valve shaft 3 is displaced downwardly to conical surface 131 drive fits of 1 small axle diameter section 13 of the conical surface 311 and control plunger of control valve shaft stepped shaft through hole 31 large bottom sections, working solution by on the control plunger 1 into and out of working solution passage II 12 and working solution passage III perforation (referring to Fig. 1-2).
Claims (2)
1. two-position three-way valve without back pressure, comprise that having working solution on it advances, go out the control plunger of passage, have control valve ectosome and the control valve shaft of working solution flow pass on it, it is characterized in that: described control plunger (1) is not isometrical shaft-like part, described control valve ectosome (2) is the cylindrical body with stepped shaft through hole (21), described control valve shaft (3) is that a center hole is the not isometrical shaft-like part of 3 grades of stepped shaft through holes (31), be conical surface (33) between control valve shaft large-diameter section (32) and the control valve shaft small axle diameter (34), the conical surface (311) is arranged at the bottom of the large end of stepped shaft through hole (31) of control valve shaft, control plunger (1), control valve shaft (3) and control valve ectosome (2) are installed from bottom to up successively, control plunger (1) is put into large end and its composition couple of control valve shaft stepped shaft through hole (31) and the bottom conical surface (311) cone match of holding greatly with the stepped shaft through hole (31) of control valve shaft, return spring (4) places the stage casing of control valve shaft stepped shaft through hole (31) to withstand control plunger (1), conical surface (22) cone match of the step of the stepped shaft through hole (21) of control valve shaft conical surface (33) and control valve ectosome (2), the fitting surface of control plunger and control valve ectosome is high planeness plane, each part end face close proximity, form sealing, control plunger upper end cylinder forms couple with control valve shaft inner circle hole, the control plunger, the control valve ectosome, control valve shaft coaxality is installed, the control plunger can be mobile flexibly in control valve shaft stepped shaft through hole (31), the axial pressure of control valve shaft is in a basic balance, the small axle diameter (34) of control valve shaft passes the small end of control valve ectosome stepped shaft through hole (21), and flows out the working solution passage III of usefulness with the circular working solution of its formation.
2. a kind of two-position three-way valve without back pressure according to claim 1, it is characterized in that: described control plunger (1) is that an end is the not isometrical shaft-like part of large-diameter base (11), be small axle diameter section I (14) between small axle diameter section II (15) and time small axle diameter section (13), small axle diameter section I (14) has horizontal hole (141), have the T font working solution passage I that is consisted of by central blind hole (16) and horizontal hole (141) on the large-diameter base, the straight hole road (12) parallel with central blind hole (16) forms working solution passage II, is conical surface (131) transition between inferior small axle diameter section (13) and the small axle diameter section I (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810073749 CN101649917B (en) | 2008-08-16 | 2008-08-16 | Two-position three-way valve without back pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810073749 CN101649917B (en) | 2008-08-16 | 2008-08-16 | Two-position three-way valve without back pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101649917A CN101649917A (en) | 2010-02-17 |
| CN101649917B true CN101649917B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810073749 Expired - Fee Related CN101649917B (en) | 2008-08-16 | 2008-08-16 | Two-position three-way valve without back pressure |
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| Country | Link |
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| CN (1) | CN101649917B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204852457U (en) | 2015-08-07 | 2015-12-09 | 恺霖卫浴科技（厦门）有限公司 | Double fluid volume auto -change over device |
| CN110814647B (en) * | 2019-11-04 | 2021-04-13 | 中国万宝工程有限公司 | Control valve core and machining method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5503127A (en) * | 1994-12-13 | 1996-04-02 | Stanadyne Automotive Corp. | Fuel injection pump with auxiliary control system |
| CN101096939A (en) * | 2006-06-30 | 2008-01-02 | 柳州华威电控技术有限公司 | Electromagnetical type electric-controlled diesel oil fuel oil injector |
| CN201288850Y (en) * | 2008-08-16 | 2009-08-12 | 柳州福尔曼汽车电子有限公司 | Non-backpressure two-position three-port valve |
-
2008
- 2008-08-16 CN CN 200810073749 patent/CN101649917B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5503127A (en) * | 1994-12-13 | 1996-04-02 | Stanadyne Automotive Corp. | Fuel injection pump with auxiliary control system |
| CN101096939A (en) * | 2006-06-30 | 2008-01-02 | 柳州华威电控技术有限公司 | Electromagnetical type electric-controlled diesel oil fuel oil injector |
| CN201288850Y (en) * | 2008-08-16 | 2009-08-12 | 柳州福尔曼汽车电子有限公司 | Non-backpressure two-position three-port valve |
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| Publication number | Publication date |
|---|---|
| CN101649917A (en) | 2010-02-17 |
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