CN102518623A - Plug-in mounting type charging valve - Google Patents
Plug-in mounting type charging valve Download PDFInfo
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- CN102518623A CN102518623A CN2011103904593A CN201110390459A CN102518623A CN 102518623 A CN102518623 A CN 102518623A CN 2011103904593 A CN2011103904593 A CN 2011103904593A CN 201110390459 A CN201110390459 A CN 201110390459A CN 102518623 A CN102518623 A CN 102518623A
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- valve body
- valve
- spring
- piston
- spool
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Abstract
The invention discloses a charging valve, in particular to a normally-closed charging valve used for a bending machine. The normally-closed charging valve comprises a valve body and a valve plug, wherein the valve plug can carry out axial movement in an inner path of the valve body; the bottom of the valve body is provided with a hollow cavity shaped like the Chinese character tu; the outer wall of the valve body is provided with a through hole; the through hole is communicated with the hollow cavity shaped like the Chinese character tu on the bottom of the valve body; one downward end of the valve plug extends to form a disc-shaped valve disk; when the valve disk is tightly stuck on the valve body, the through hole and the lower half part of the hollow cavity shaped like the Chinese character tu of the valve body are not communicated; a piston is arranged in the inner path of the valve body; the piston is sheathed to the upper end of the valve plug; the valve body and the piston are connected by a first spring; the upper part of the valve plug is also clamped with a spring seat; and the spring seat and the valve body are connected by a second spring. The normally-closed charging valve used for the bending machine has the advantages of compact structure and high sealing reliability and is convenient to install.
Description
Technical field
The present invention is a kind of liquid-filling valve, especially for the normal close type liquid-filling valve of bender.
Background technique
Mostly liquid-filling valve is normal close type in the extensive use of bender industry.The major defect of existing liquid-filling valve is that inconvenience is installed, and leakage point is more.When bender producer uses liquid-filling valve, hope that liquid-filling valve is easy for installation, sealing reliability is high.
Summary of the invention
What the present invention solved is that existing liquid-filling valve is installed inconvenience, the problem that leakage point is more.
Liquid-filling valve of the present invention comprises valve body, the spool that can axially move at the valve inner passage; The valve body bottom has the cavity that the cross section is a convex shape, on valve outer wall, has through hole, and through hole communicates with the cavity of valve body bottom; A spool end down extends into discoid valve disc, when valve disc is close to valve body, aforementioned through-hole is not communicated with the Lower Half of valve body bottom cavity; In the inner passage of valve body piston is set, piston socket spool upper end; Valve body links to each other through first spring with piston; Also blocking on spool top has spring seat, and spring seat is connected through second spring with valve body.
When pressure oil pressed down piston, piston drove spool and axially moves.First spring is a piston reset spring, is used for the stroke of spacing piston.Spring seat is the locating element of spool, and the position of spring seat limits the decrement of second spring, and second spring is a valve core reseting spring, the stroke of spacing spool.
Through hole on the valve body is six, and internal diameter is identical, and on the same conical surface of valve body, evenly distributes.
The top, inner passage of valve body is provided with plug screw, is threaded with valve body, is provided with through hole between wherein.
Plug screw is fixed on the valve body, is used for the position of limited piston.
The cross section of valve inner passage bottom is a stepped shape, so that other parts are installed.
Valve body is an overall structure, and big centre, shape two is little.Valve body adopts monolithic construction, has reduced the sealing part number, and more compact structure is easy to manufacture; Leakage point reduces, and the integral sealing reliability improves, and installs more convenient.
The piston that in the valve inner passage, is provided with is cup type structure, and its external cylindrical surface is guiding, and inside holds spool.
The space utilization of internal piston can reduce the height dimension of whole liquid-filling valve.
First spring is a pressure spring, in the state of rest of liquid-filling valve, under the active force of first spring, makes piston near plug screw.Second spring is a pressure spring, in the state of rest of liquid-filling valve, under the active force of second spring, makes valve disc and valve body fit, thereby the path of A chamber to the B chamber cut off.
As improvement; Be provided with circular groove on spool top; Difference is provided with axle-steel silk back-up ring to be stuck in the circular groove circular groove according to the difference of liquid-filling valve specification to the distance on spool top, and this axle-steel silk back-up ring is the spacing part of second spring; Make spring seat can not come off, and make an end of second spring fix on the fixed position of spool bottom.
For any one liquid-filling valve recited above, installation form is a plug-in type.
Compact structure of the present invention, easy for installation, use reliably, widely applicable, be specially adapted to the bender hydraulic system.
Description of drawings
Fig. 1 is a structural representation of the present invention
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
The straight bar part of spool 2 is through in the inner passage of valve body 1, spool 2 relative valve bodies 1 is produced in rectilinear direction slide.Piston 7 socket spools 2 upper ends; Spool 2 is peripherally equipped with first spring, 3, one ends and connects the piston inner wall top, and an end connects valve body; Make the piston 7 can slide relative in the inner passage of valve body 1.Spool 2 tops are equipped with spring seat 5, one ends of second spring, 4, one end connecting sleeves on spool 2 tops and are connected valve body.When pressure oil pressed down piston 7 through the X chamber, piston 7 drove spool 2, and when piston 7 moved down into valve body 1 applying, valve disc 9 so just made that away from valve body 1 the B chamber is a channel status to the A chamber.Move when first spring 3 drives on the piston 7, move on the spool 2, when second spring, 4 drive spools 2 make valve disc 9 be close to valve body 1, the path of A chamber to the B chamber cut off.
Axle-steel silk back-up ring 8 is stuck in spool 2 tops, and the position of restraining spring seat 5 makes spring seat 5 can not come off.
Be illustrated as nature of the present invention, spool 2 is by the tension force pull-up of second spring 4, makes valve disc 9 applying valve bodies 1, and A, B two chambeies are not connected.But, under very little pressure effect, can make fluid flow to the B chamber from the A chamber because the resistance of second spring 4 is very little.
When fluid when the B chamber flows to the A chamber, valve disc 9 is imposed by fluid and upwards pressure, through the X chamber, promote piston 7 at pressure oil this moment, drives spool 2 and move down, valve disc 9 so just makes that away from valve body 1 the B chamber is a channel status to the A chamber.
The present invention adopts the integrated type valve body, and compact structure is easy for installation, and the sealing part number is few, and the reliability coefficient is high.
Claims (7)
1. a liquid-filling valve comprises valve body (1), the spool (2) that can axially move in valve body (1) inner passage; It is characterized in that the valve body bottom has the cavity that the cross section is a convex shape, on valve body (1) outer wall, have through hole, aforementioned through-hole communicates with the cavity of valve body (1) bottom; Spool (a 2) end down extends into discoid valve disc (9), and when valve disc (9) was close to valve body (1), through hole did not communicate with the Lower Half of valve body (1) bottom cavity; Piston (7) is set, piston (7) socket spool (2) upper end in the inner passage of valve body (1); Valve body (1) links to each other through first spring (3) with piston (7); Also blocking on said spool (2) top has spring seat (5), and aforementioned spring seat (5) is connected through second spring (4) with valve body (1).
2. liquid-filling valve according to claim 1 is characterized in that: the through hole on the valve body (1) is six, and internal diameter is identical, and on the same conical surface of valve body (1), evenly distributes.
3. liquid-filling valve according to claim 1 is characterized in that: in said valve body (1) inner passage, plug screw (6) is set, is threaded with valve body, face mutually with piston (7) top, plug screw (6) center is provided with through hole.
4. liquid-filling valve according to claim 1 is characterized in that: the cross section of said valve body (1) bottom, inner passage is step-like.
5. liquid-filling valve according to claim 1 is characterized in that: said piston (7) is for cup-shaped, and rim of a cup is downward, holds spool (2) in the cup.
6. liquid-filling valve according to claim 1 is characterized in that, said first spring (3), second spring (4) are pressure spring.
7. liquid-filling valve according to claim 1 is characterized in that: spool (2) top is provided with circular groove, axle-steel silk back-up ring (8) is set is stuck in the groove, blocks spring seat (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103904593A CN102518623A (en) | 2011-12-01 | 2011-12-01 | Plug-in mounting type charging valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103904593A CN102518623A (en) | 2011-12-01 | 2011-12-01 | Plug-in mounting type charging valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102518623A true CN102518623A (en) | 2012-06-27 |
Family
ID=46289654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103904593A Pending CN102518623A (en) | 2011-12-01 | 2011-12-01 | Plug-in mounting type charging valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102518623A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334974A (en) * | 2013-06-18 | 2013-10-02 | 福建海源自动化机械股份有限公司 | Self-adaptive multistage pressure relief controlled press liquid filling device |
| CN103334975A (en) * | 2013-06-18 | 2013-10-02 | 福建海源自动化机械股份有限公司 | Multi-runner compound-control compressor charging device |
| CN103671363A (en) * | 2012-08-31 | 2014-03-26 | 苏州立注机械有限公司 | Filling valve of vertical type injection molding machine |
| CN103775414A (en) * | 2014-01-15 | 2014-05-07 | 无锡华宇精密机械有限公司 | Prefill valve and working method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250453Y (en) * | 1995-11-15 | 1997-03-26 | 煤炭科学研究总院上海分院 | Disc type fluid charging valve |
| CN2437891Y (en) * | 2000-08-22 | 2001-07-04 | 阴振生 | Liquid filling valve with lead type unload valve |
| JP2005047579A (en) * | 2003-07-30 | 2005-02-24 | Toyo Seikan Kaisha Ltd | Liquid filling valve |
| CN2818944Y (en) * | 2005-04-21 | 2006-09-20 | 南京埃尔法电液技术有限公司 | Prefill valve |
| CN201110289Y (en) * | 2007-10-23 | 2008-09-03 | 山东泰丰液压设备有限公司 | Overlapping type liquid filling valve with beforehand valve-removing in valve core |
| CN201344162Y (en) * | 2009-01-19 | 2009-11-11 | 山东泰丰液压设备有限公司 | Prefill valve of hydrostatic press system |
| CN201636109U (en) * | 2010-03-28 | 2010-11-17 | 徐州压力机械有限公司 | Liquid charging valve |
| CN202391866U (en) * | 2011-12-01 | 2012-08-22 | 南京埃尔法电液技术有限公司 | Plug-in mounting type charging valve |
-
2011
- 2011-12-01 CN CN2011103904593A patent/CN102518623A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250453Y (en) * | 1995-11-15 | 1997-03-26 | 煤炭科学研究总院上海分院 | Disc type fluid charging valve |
| CN2437891Y (en) * | 2000-08-22 | 2001-07-04 | 阴振生 | Liquid filling valve with lead type unload valve |
| JP2005047579A (en) * | 2003-07-30 | 2005-02-24 | Toyo Seikan Kaisha Ltd | Liquid filling valve |
| CN2818944Y (en) * | 2005-04-21 | 2006-09-20 | 南京埃尔法电液技术有限公司 | Prefill valve |
| CN201110289Y (en) * | 2007-10-23 | 2008-09-03 | 山东泰丰液压设备有限公司 | Overlapping type liquid filling valve with beforehand valve-removing in valve core |
| CN201344162Y (en) * | 2009-01-19 | 2009-11-11 | 山东泰丰液压设备有限公司 | Prefill valve of hydrostatic press system |
| CN201636109U (en) * | 2010-03-28 | 2010-11-17 | 徐州压力机械有限公司 | Liquid charging valve |
| CN202391866U (en) * | 2011-12-01 | 2012-08-22 | 南京埃尔法电液技术有限公司 | Plug-in mounting type charging valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671363A (en) * | 2012-08-31 | 2014-03-26 | 苏州立注机械有限公司 | Filling valve of vertical type injection molding machine |
| CN103334974A (en) * | 2013-06-18 | 2013-10-02 | 福建海源自动化机械股份有限公司 | Self-adaptive multistage pressure relief controlled press liquid filling device |
| CN103334975A (en) * | 2013-06-18 | 2013-10-02 | 福建海源自动化机械股份有限公司 | Multi-runner compound-control compressor charging device |
| CN103334975B (en) * | 2013-06-18 | 2015-10-28 | 福建海源自动化机械股份有限公司 | A kind of press charging device of multiple flow passages complex controll |
| CN103334974B (en) * | 2013-06-18 | 2015-10-28 | 福建海源自动化机械股份有限公司 | A kind of adaptive multistage unloads the press charging device of pressure-controlled |
| CN103775414A (en) * | 2014-01-15 | 2014-05-07 | 无锡华宇精密机械有限公司 | Prefill valve and working method thereof |
| CN103775414B (en) * | 2014-01-15 | 2016-07-13 | 无锡华宇精密机械有限公司 | A kind of replenishing valve and method of work thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120627 |