CN202391866U - Plug-in mounting type charging valve - Google Patents
Plug-in mounting type charging valve Download PDFInfo
- Publication number
- CN202391866U CN202391866U CN2011204896072U CN201120489607U CN202391866U CN 202391866 U CN202391866 U CN 202391866U CN 2011204896072 U CN2011204896072 U CN 2011204896072U CN 201120489607 U CN201120489607 U CN 201120489607U CN 202391866 U CN202391866 U CN 202391866U
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- spring
- piston
- spool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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Abstract
The utility model relates to a charging valve, and in particular relates to a normally closed charging valve for a bending machine. The charging valve comprises a valve body and a valve core capable of axially moving in an inner channel of the valve body, wherein a convex cavity is formed at the bottom of the valve body; a through hole is formed in the outer wall of the valve body; the through hole is communicated with the convex cavity at the bottom of the valve body; the downward end of the valve core extends to form a circular disc type valve plate; when the valve plate is clung to the valve body, the through hole is not communicated with the lower half part of the convex cavity of the valve body; a piston is arranged in the inner channel of the valve body; the piston is in sleeved connection with the upper end of the valve core; the valve body and the piston are connected through a first spring; a spring base is also clamped at the upper part of the valve core; and the spring base and the valve body are connected through a second spring. The charging valve disclosed by the utility model has the advantages of being compact in structure, convenient for installation and high in sealing reliability.
Description
Technical field
The utility model 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.
The model utility content
What the utility model solved is that existing liquid-filling valve is installed inconvenience, the problem that leakage point is more.
The described liquid-filling valve of the utility model 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 said valve inner passage bottom is step-like, 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, said piston are cup-shaped, and rim of a cup is downward, hold spool in the cup, and 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.
The utility model compact structure, easy for installation, use reliably, widely applicable, be specially adapted to the bender hydraulic system.
Description of drawings
Fig. 1 is the structural representation of the utility model
Embodiment
Below in conjunction with accompanying drawing the utility model 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 the nature of the utility model, 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 utility model adopts the integrated type valve body, compact structure, and easy for installation, 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 |
|---|---|---|---|
| CN2011204896072U CN202391866U (en) | 2011-12-01 | 2011-12-01 | Plug-in mounting type charging valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204896072U CN202391866U (en) | 2011-12-01 | 2011-12-01 | Plug-in mounting type charging valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391866U true CN202391866U (en) | 2012-08-22 |
Family
ID=46666795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204896072U Expired - Lifetime CN202391866U (en) | 2011-12-01 | 2011-12-01 | Plug-in mounting type charging valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518623A (en) * | 2011-12-01 | 2012-06-27 | 南京埃尔法电液技术有限公司 | Plug-in mounting type charging valve |
| CN105065731A (en) * | 2015-07-20 | 2015-11-18 | 中山市文天长液压机械有限公司 | Charging valve |
-
2011
- 2011-12-01 CN CN2011204896072U patent/CN202391866U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518623A (en) * | 2011-12-01 | 2012-06-27 | 南京埃尔法电液技术有限公司 | Plug-in mounting type charging valve |
| CN105065731A (en) * | 2015-07-20 | 2015-11-18 | 中山市文天长液压机械有限公司 | Charging valve |
| CN105065731B (en) * | 2015-07-20 | 2018-05-18 | 中山市文天长液压机械有限公司 | A kind of prefill valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151106 Address after: 211100 Jiangning Economic Development Zone, Jiangsu Province, general Avenue, No. 155, No. Patentee after: Nanjing Estun Automation Co., Ltd. Address before: 211102 No. 178 Yan Hu Road, Jiangning Development Zone, Jiangsu, Nanjing, China Patentee before: Aierfa Electrohydraulic Technology Co., Ltd., Nanjing City Patentee before: Nanjing Estun Automation Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |