CN203822752U - Oil suction valve for electric-hydraulic push rod - Google Patents
Oil suction valve for electric-hydraulic push rod Download PDFInfo
- Publication number
- CN203822752U CN203822752U CN201420149441.3U CN201420149441U CN203822752U CN 203822752 U CN203822752 U CN 203822752U CN 201420149441 U CN201420149441 U CN 201420149441U CN 203822752 U CN203822752 U CN 203822752U
- Authority
- CN
- China
- Prior art keywords
- spool
- valve
- valve body
- valve core
- spring
- 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
Links
Abstract
The utility model provides an oil suction valve for an electric-hydraulic push rod, and relates to the field of a valve structure used for the electric-hydraulic push rod. The oil suction valve comprises a valve body and a spring, wherein an oil inlet is formed in the front end of the valve body, and an oil outlet is formed in the rear end of the valve body; a valve core is arranged in the valve body; the outer surface of the front end of the valve core is a conical surface; the outer diameter of the front end of the valve core is smaller than that of the rear end; an excircle of the rear end of the valve core is matched with an inner hole of the valve body; an oil duct is axially arranged in the valve core; the front end of the valve core is a blind end; a through hole communicated with the oil duct is radially formed in the front end of the valve core; a gasket provided with a central hole is connected into the rear end of the valve body through a fixing pin and is arranged on the rear side of the valve core; a boss is integrally arranged at the front end of the gasket; the valve core in the oil duct is provided with a step; and one end of the spring is arranged on the boss of the gasket in a sleeving manner, and the other end of the spring is propped against the step in the valve core. The oil suction valve can normally work and is not sensitive to the environment temperature, high in work reliability and long in service life.
Description
Technical field
The utility model relates to the structure field of the valve of Electrohydraulic push rod use.
Background technique
Traditional Electrohydraulic push rod oil sucting valve is the structure that steel ball adds spring, in the time that ambient temperature changes, hydraulic pressure oil viscosity also changes thereupon, winter temperature is lower, hydraulic pressure oil viscosity is very large, now oil sucting valve cannot be opened, and Electrohydraulic push rod cisco unity malfunction only has the less spring of the rigidity of replacing; In the time that used summer, hydraulic pressure oil viscosity is very little, and the suction of oil hydraulic pump is very large, steel ball is drawn onto to the other end of oil sucting valve, and oil sucting valve is blocked, and only has the larger spring of the rigidity of replacing, and Electrohydraulic push rod could normal work.User will be in the winter time, change the spring of different-stiffness summer, and Electrohydraulic push rod just can normally be worked.On-the-spot replacing workload is very large, and affects the normal production at user scene.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, provide a kind of in the winter time, do not need to change the Electrohydraulic push rod oil sucting valve of different-stiffness spring summer.
The purpose of this utility model is achieved in that Electrohydraulic push rod oil sucting valve, comprise valve body, spring, the front end of valve body arranges filler opening, rear end sets out hydraulic fluid port, in described valve body, spool is set, the outer surface of spool front end is the conical surface, the external diameter of spool front end is less than the external diameter of rear end, the rear end cylindrical of spool matches with the endoporus of valve body, oil duct is axially set in spool, the front end of spool is cecum, the front end of spool radially arranges the through hole being connected with oil duct, in the rear end of described valve body, connect a pad with center hole by fixing pin, pad is arranged on the rear side of spool, the front end of pad is wholely set boss, spool in described oil duct arranges step, one end of described spring is nested with on the boss of pad, on the step that the other end of spring is conflicted in spool.
The utility model, by above design, is selected the spring of a Reasonable Rigidity, guarantees that winter, spool can normally be opened, and the Front-end Design through hole of spool is communicated with the oil duct of spool, when being blocked by pad after the certain stroke of valve core movement; Summer temp is high, and hydraulic pressure oil viscosity is lower, after the identical stroke of valve core movement, is blocked by pad, and whole oil sucting valve is communicated with.The endoporus of valve body and the cylindrical of spool all adopt grinding process technique, and the sealing position of valve body and spool adopts high frequency hardening processing technology.The normal work of oil sucting valve is insensitive to ambient temperature, and functional reliability is high, long service life.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Embodiment
As shown in Figure 1, for Electrohydraulic push rod oil sucting valve, comprise valve body 1, the front end of valve body 1 arranges filler opening 1-1, rear end sets out hydraulic fluid port 1-2, the interior spool 2 that arranges of valve body 1, the outer surface of spool 2 front ends is the conical surface, the external diameter of spool 2 front ends is less than the external diameter of rear end, and the rear end cylindrical of spool 2 matches with the endoporus of valve body 1, the interior oil duct 7 that axially arranges of spool 2, the front end of spool 2 is cecum, and the front end of spool 2 radially arranges the through hole 9 being connected with oil duct 7.In the rear end of valve body 1, connect a pad 4 with center hole by fixing pin 5, pad 4 is arranged on the rear side of spool 2, and leave certain distance between pad 4 and spool 2, the front end of pad 4 is wholely set boss 6, spool 2 in oil duct 7 arranges step 8, one end of spring 3 is nested with on the boss 6 of pad 4, on the step 8 that the other end of spring 3 is conflicted in spool 2.
Claims (1)
1. Electrohydraulic push rod oil sucting valve, comprise valve body, spring, the front end of valve body arranges filler opening, rear end sets out hydraulic fluid port, it is characterized in that: in described valve body, spool is set, the outer surface of spool front end is the conical surface, the external diameter of spool front end is less than the external diameter of rear end, the rear end cylindrical of spool matches with the endoporus of valve body, oil duct is axially set in spool, the front end of spool is cecum, the front end of spool radially arranges the through hole being connected with oil duct, in the rear end of described valve body, connect a pad with center hole by fixing pin, pad is arranged on the rear side of spool, the front end of pad is wholely set boss, spool in described oil duct arranges step, one end of described spring is nested with on the boss of pad, on the step that the other end of spring is conflicted in spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149441.3U CN203822752U (en) | 2014-03-31 | 2014-03-31 | Oil suction valve for electric-hydraulic push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149441.3U CN203822752U (en) | 2014-03-31 | 2014-03-31 | Oil suction valve for electric-hydraulic push rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822752U true CN203822752U (en) | 2014-09-10 |
Family
ID=51478261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420149441.3U Expired - Fee Related CN203822752U (en) | 2014-03-31 | 2014-03-31 | Oil suction valve for electric-hydraulic push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822752U (en) |
-
2014
- 2014-03-31 CN CN201420149441.3U patent/CN203822752U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20170331 |