CN2779170Y - Prefill valve - Google Patents
Prefill valve Download PDFInfo
- Publication number
- CN2779170Y CN2779170Y CN 200520081194 CN200520081194U CN2779170Y CN 2779170 Y CN2779170 Y CN 2779170Y CN 200520081194 CN200520081194 CN 200520081194 CN 200520081194 U CN200520081194 U CN 200520081194U CN 2779170 Y CN2779170 Y CN 2779170Y
- Authority
- CN
- China
- Prior art keywords
- valve
- main valve
- push rod
- guide
- rod
- 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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- Lift Valve (AREA)
Abstract
The utility model provides a prefill valve, which comprises a housing body and a valve body, wherein the housing body is provided with a low pressure oil port which is communicated with the valve body, and a control piston is arranged in the valve body, a spring, a main valve core and a priority valve core which is in the inner bottom part of the main valve core; the valve body is provided with an oil passage, and the main valve core is provided with an oil drain hole. The scheme is characterized in that a push rod is arranged between the main valve core and the control piston, the spring is wound on the push rod, and a gap is arranged between the push rod and the main valve core; the priority valve core which is in the inner bottom part of the main valve core is provided with a priority valve rod, and the priority valve rod penetrates through the main valve core and is fixedly connected with the push rod. The gap between the push rod and the valve core is two to five millimeters; the priority valve rod is fixedly connected with the push rod; the priority valve rod is fixed by a fixing nut for the priority valve rod.
Description
Technical field:
The utility model relates to a kind of hydraulic component, especially a kind of quick topping up of oil hydraulic cylinder and discharge opeing, liquid-filling valve of raising oil hydraulic cylinder no-load speed and opening speed of being used for.
Background technique:
In the prior art, the prior art the most approaching, the current exactly liquid-filling valve that on large hydraulic press, uses both at home and abroad with the utility model.Guide's spool of this liquid-filling valve is connected with push rod, though can finish quick topping up of oil hydraulic cylinder and discharge opeing preferably, improve the function of oil hydraulic cylinder no-load speed and opening speed, still, because guide's spool is thiner with being connected of push rod, occurring guide's spool sometimes comes off and causes the accident, in addition, be exactly that main valve plug is complex-shaped, be again to become overall structure with main valve stem, just make processing difficulties and waste material, this is an existing in prior technology subject matter.
Summary of the invention:
The purpose of this utility model is exactly at the existing in prior technology deficiency, and a kind of liquid-filling valve technological scheme is provided.This scheme is equipped with push rod between main valve plug and control piston, a gap is arranged between push rod and the main valve plug, and guide's spool has guide's valve rod, and guide's valve rod passes main valve plug fixedlys connected with push rod.Because guide's spool and guide's valve rod are overall structures, the problem that or else guide's spool can occur coming off, and do not have main valve stem on the main valve plug, this makes main valve plug processing become easily again, but also saves material.
This programme is realized by following technical measures.Include housing and valve body, on housing, there is the low pressure hydraulic fluid port to communicate with valve body, guide's spool that control piston, spring and main valve plug and main valve plug inner bottom part are arranged in valve body, oil duct is arranged on valve body, the draining hole is arranged on main valve plug, the characteristics of this programme are between described main valve plug and control piston push rod to be arranged, described spring just is wrapped on the push rod, one gap is arranged between described push rod and the main valve plug, guide's spool of main valve plug inner bottom part has guide's valve rod, and guide's valve rod passes main valve plug fixedlys connected with push rod.The concrete characteristics of this programme also have, and the gap between described push rod and the main valve plug is the 2-5 millimeter.Described guide's valve rod is fixedlyed connected with push rod, is to use fixedly guide's valve rod of guide's valve rod set screw nut.
The beneficial effect of this programme can be learnt according to the narration to such scheme, owing between main valve plug described in this scheme and control piston, push rod is arranged, one gap is arranged between push rod and the main valve plug, guide's spool of main valve plug inner bottom part has guide's valve rod, and guide's valve rod passes main valve plug fixedlys connected with push rod.This structure, guide's spool and guide's valve rod are overall structures, therefore, the problem that or else guide's spool can occur coming off, this can reduce the corresponding size that can reduce control piston and Returnning spring again with the size of guide's spool again, and pilot pressure is reduced, it is reliable to reset.And not having main valve stem on the main valve plug, this makes the structure of main valve plug become simply again, also becomes easily with regard to the processing that makes main valve plug, but also saves material.This shows that the utility model compared with prior art not only can be finished quick topping up of oil hydraulic cylinder and discharge opeing, improve the function of oil hydraulic cylinder no-load speed and opening speed, and structure is become simply, the quantity of part reduces, processing easily, good manufacturability, stock utilization height.So this programme has outstanding substantive distinguishing features and obvious improvement, its implementation result also is conspicuous.
Description of drawings:
Fig. 1 is the sectional structure schematic representation of the utility model embodiment.
1 is guide's valve rod among the figure, and 2 is the draining hole, and 3 is the low pressure hydraulic fluid port, and 4 is oil duct, and 5 is control piston, and 6 is spring, and 7 is push rod, and 8 is guide's valve rod set screw nut, and 9 is housing, and 10 is valve body, and 11 is main valve plug, and 12 is guide's spool.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, this programme is illustrated below by an embodiment.
By accompanying drawing as can be seen, the liquid-filling valve of this programme, include housing (9) and valve body (10), on housing (9), there is low pressure hydraulic fluid port (3) to communicate with valve body (10), guide's spool (12) that control piston (5), spring (6) and main valve plug (11) and main valve plug (11) inner bottom part are arranged in valve body (10), oil duct (4) is arranged on valve body (10), draining hole (2) is arranged on main valve plug (11).This programme is between described main valve plug (11) and control piston (5) push rod (7) to be arranged, and described spring (6) just is wrapped on the push rod (7), between described push rod (7) and the main valve plug (11) gap is arranged, and this gap is the 2-5 millimeter.Guide's spool (12) of main valve plug (11) inner bottom part has guide's valve rod (1), and guide's valve rod (1) passes main valve plug (11) fixedlys connected with push rod (7), and this is fixedly connected, is to adopt fixedly guide's valve rod (1) of guide's valve rod set screw nut (8).
Claims (3)
1. liquid-filling valve, include housing and valve body, on housing, there is the low pressure hydraulic fluid port to communicate with valve body, guide's spool that control piston, spring and main valve plug and main valve plug inner bottom part are arranged in valve body, oil duct is arranged on valve body, the draining hole is arranged on main valve plug, it is characterized in that: between described main valve plug and control piston, push rod is arranged, described spring just is wrapped on the push rod, one gap is arranged between described push rod and the main valve plug, guide's spool of main valve plug inner bottom part has guide's valve rod, and guide's valve rod passes main valve plug fixedlys connected with push rod.
2. liquid-filling valve according to claim 1 is characterized in that: the gap between described push rod and the main valve plug is the 2-5 millimeter.
3. liquid-filling valve according to claim 1 and 2 is characterized in that: described guide's valve rod is fixedlyed connected with push rod, is to use fixedly guide's valve rod of guide's valve rod set screw nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520081194 CN2779170Y (en) | 2005-03-24 | 2005-03-24 | Prefill valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520081194 CN2779170Y (en) | 2005-03-24 | 2005-03-24 | Prefill valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2779170Y true CN2779170Y (en) | 2006-05-10 |
Family
ID=36753258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520081194 Expired - Fee Related CN2779170Y (en) | 2005-03-24 | 2005-03-24 | Prefill valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2779170Y (en) |
-
2005
- 2005-03-24 CN CN 200520081194 patent/CN2779170Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |