CN201714730U - Mechanical servo control valve - Google Patents
Mechanical servo control valve Download PDFInfo
- Publication number
- CN201714730U CN201714730U CN2010202539697U CN201020253969U CN201714730U CN 201714730 U CN201714730 U CN 201714730U CN 2010202539697 U CN2010202539697 U CN 2010202539697U CN 201020253969 U CN201020253969 U CN 201020253969U CN 201714730 U CN201714730 U CN 201714730U
- Authority
- CN
- China
- Prior art keywords
- valve
- servo control
- spool
- valve body
- mechanical servo
- 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 - Fee Related
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Abstract
The utility model relates to a mechanical servo control valve, which comprises a valve body. The valve body is provided with an oil inlet and an oil outlet. The inside of the valve body is provided with an oil channel and a valve core. A valve sleeve is sleeved outside the valve core. An operating rod is fixed at the upper end of the valve core. The mechanical servo control valve is characterized in that a feedback rod is arranged on the valve sleeve along the radial direction of the valve core; a first through hole is arranged on the valve sleeve along the radial direction; the middle part of the valve core is respectively provided with a second through hole and a slot; the lower part of the valve core is provided with a groove; a spring seat is arranged in the slot of the valve core; a spring is arranged in the spring seat; the first through hole and the second through hole are communicated with the oil channel in the valve body; a regulating seat is arranged between the valve core and the valve body; a limit block is arranged between the regulating seat and the operating rod; the feedback rod is provided with a regulating screw; a sealing nut is arranged between the regulating screw and the valve body; and a gap between the regulating seat and the valve body is sealed by an O-shaped sealing ring. The mechanical servo control valve has the advantages of simplification of control structure, convenient installation, small volume, light weight and simple structure of the valve.
Description
Technical field
The utility model relates to a kind of mechanical servo control valve, belongs to the hydraulic control field.
Background technique
Along with the development of hydraulics, new requirement has been proposed for the Variable Control mechanism of plunger pump.Hydraulic control generally divides pump control system and valve control system, because it is simple that pump control system has system architecture, integrated height, the pressure loss is little, and the characteristics that efficient is high are used widely in closed circuit, mechanically controlled valve is indispensable core component in this control system, its control accuracy, sensitivity, mechanisms etc. are heavy to closing.Therefore, the performance of direct variation pump of the performance of mechanically controlled valve and closed circuit, it is low that control accuracy appears in present mechanically controlled valve often, reflects insensitively, and amount of leakage is big, and efficient is low, and the life-span is short, and inconvenience is installed, and influences problems such as systematic function.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of stable performance is provided, the mechanical servo control valve that reliability is high.
According to the technological scheme that the utility model provides, described mechanical servo control valve comprises valve body, is provided with filler opening and oil outlet on valve body, is provided with oil circuit and spool in valve body, and sheathed valve pocket outside spool is at the upper end of spool fixing operation bar; It is characterized in that: at the radially installation feedback rod of described valve pocket upper edge spool; In the groove of spool, be provided with spring seat, spring is installed in spring seat.
Between described spool and valve body, be provided with and adjust seat.Between described adjustment seat and operating stem, be provided with limiting stopper.On described feedback rod, be provided with the adjustment screw.Between described adjustment screw and the valve body sealing nut is set.Between described adjustment seat and valve body, utilize the O-ring seals sealing.Described spring utilizes plug screw to be fixed in the spring seat.
On described valve pocket, be disposed radially first through hole, be respectively equipped with second through hole and groove, be provided with groove in the spool bottom at described spool middle part; Oil circuit UNICOM in described first through hole and second through hole and the valve body.Groove on the described spool cooperates with the tip-clearance of feedback rod.
The utility model simple control structure separates pilot valve with control mechanism, easy for installation, volume is little, and is in light weight, valve simple in structure.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the plan view of Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As Fig. 1～shown in Figure 2: mechanical servo control valve comprises spool 1, valve pocket 2, valve body 3, adjusts seat 4, O-ring seals 5, feedback rod 6, sealing nut 7, operating stem 8, limiting stopper 9, adjust screw 10, filler opening 11, oil outlet 12, second through hole 13, groove 14, groove 15, spring seat 16, spring 17, plug screw 18, first through hole 19 etc.
The utility model comprises valve body 3, and spool 1 is set in valve body 3, and sheathed valve pocket 2 outside spool 1 at the upper end of spool 1 fixing operation bar 8, is provided with between spool 1 and valve body 3 and adjusts seat 4, is provided with limiting stopper 9 between adjustment seat 4 and operating stem 8; Be respectively equipped with second through hole 13 and groove 14 at spool 1 middle part, be provided with groove 15 in spool 1 bottom; Be provided with spring seat 16 in the groove 14 of spool 1, spring 17 is installed in spring seat 16, described spring 17 utilizes plug screw 18 to be fixed in the spring seat 16; At the radially installation feedback rod 6 of described valve pocket 2 upper edge spools 1, on feedback rod 6, be provided with and adjust screw 10; Between described adjustment screw 10 and the valve body 3 sealing nut 7 is set; Groove 15 on the described spool 1 cooperates with the tip-clearance of feedback rod 6; Between adjustment seat 4 and valve body 3, utilize O-ring seals 5 sealings; On valve body 3, be provided with filler opening 11 and oil outlet 12, in valve body 3, be provided with oil circuit; On valve pocket 2, be disposed radially first through hole 19, the oil circuit UNICOM in described first through hole 19 and second through hole 13 and the valve body 3.
Working procedure of the present utility model: during rotary manipulation bar 8, can drive spool 1 rotates spool 1, thereby make second through hole 13 on the spool 1 and first through hole, 19 contacts on the valve pocket 2 connect oil circuits, hydraulic oil enters into variable cylinder by oil outlet 12, thereby promoting swash plate angle and orientation changes, pump delivery and fluid direction are changed, variable cylinder drives feedback rod 6 simultaneously, pass through lever principle, promoting valve pocket 2 rotates, through hole and oil circuit on the valve pocket 2 are changeed at an angle, close oil circuit.In addition, when spool 1 changes, make angulation between the groove 14 of spool 1 and the spring seat 16, the springs 17 in the spring seat 16 can drive spool 1 and reset.
The utility model simple control structure separates pilot valve with control mechanism, easy for installation, volume is little, and is in light weight, valve simple in structure.Increased the control base area, better tightness prevents to occur the leakage of oil problem when working long hours.Adopt new material and advanced heat treatment method, improved spool, the wear resistance of valve pocket, efficient have had higher lifting.The O RunddichtringO adopts fluorine rubber, and high-low temperature resistant is difficult for wearing out, and has guaranteed the reliability of valve.
Claims (9)
1. mechanical servo control valve, comprise valve body (3), on valve body (3), be provided with filler opening (11) and oil outlet (12), in valve body (3), be provided with oil circuit and spool (1), sheathed valve pocket (2) outside spool (1) is at the upper end fixing operation bar (8) of spool (1); It is characterized in that: at the radially installation feedback rod (6) of described valve pocket (2) upper edge spool (1); In the groove (14) of spool (1), be provided with spring seat (16), spring (17) is installed in spring seat (16).
2. mechanical servo control valve as claimed in claim 1 is characterized in that: be provided with between described spool (1) and valve body (3) and adjust seat (4).
3. mechanical servo control valve as claimed in claim 2 is characterized in that: be provided with limiting stopper (9) between described adjustment seat (4) and operating stem (8).
4. mechanical servo control valve as claimed in claim 1 is characterized in that: be provided with on described feedback rod (6) and adjust screw (10).
5. mechanical servo control valve as claimed in claim 4 is characterized in that: between described adjustment screw (10) and the valve body (3) sealing nut (7) is set.
6. mechanical servo control valve as claimed in claim 2 is characterized in that: utilize O-ring seals (5) sealing between described adjustment seat (4) and valve body (3).
7. mechanical servo control valve as claimed in claim 1 is characterized in that: described spring (17) utilizes plug screw (18) to be fixed in the spring seat (16).
8. mechanical servo control valve as claimed in claim 1, it is characterized in that: on described valve pocket (2), be disposed radially first through hole (19), be respectively equipped with second through hole (13) and groove (14) at described spool (1) middle part, be provided with groove (15) in spool (1) bottom; Described first through hole (19) and second through hole (13) and the interior oil circuit UNICOM of valve body (3).
9. mechanical servo control valve as claimed in claim 1 is characterized in that: the groove (15) on the described spool (1) cooperates with the tip-clearance of feedback rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202539697U CN201714730U (en) | 2010-07-09 | 2010-07-09 | Mechanical servo control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202539697U CN201714730U (en) | 2010-07-09 | 2010-07-09 | Mechanical servo control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714730U true CN201714730U (en) | 2011-01-19 |
Family
ID=43460726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202539697U Expired - Fee Related CN201714730U (en) | 2010-07-09 | 2010-07-09 | Mechanical servo control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714730U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514763A (en) * | 2014-12-30 | 2015-04-15 | 南京萨伯工业设计研究院有限公司 | Improved servo control valve and control method thereof |
| CN104454890B (en) * | 2014-11-29 | 2017-02-22 | 南京萨伯工业设计研究院有限公司 | Servo adjusting screw and machining method thereof |
| CN114215814A (en) * | 2021-12-02 | 2022-03-22 | 珠海格力大金精密模具有限公司 | Mold changing switch and method for connecting mold changing switch and air cylinder |
-
2010
- 2010-07-09 CN CN2010202539697U patent/CN201714730U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454890B (en) * | 2014-11-29 | 2017-02-22 | 南京萨伯工业设计研究院有限公司 | Servo adjusting screw and machining method thereof |
| CN104514763A (en) * | 2014-12-30 | 2015-04-15 | 南京萨伯工业设计研究院有限公司 | Improved servo control valve and control method thereof |
| CN114215814A (en) * | 2021-12-02 | 2022-03-22 | 珠海格力大金精密模具有限公司 | Mold changing switch and method for connecting mold changing switch and air cylinder |
| CN114215814B (en) * | 2021-12-02 | 2023-12-05 | 珠海格力大金精密模具有限公司 | Die change switch and method for connecting die change switch with cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20130709 |