CN204592456U - A kind of ratio unloading valve - Google Patents
A kind of ratio unloading valve Download PDFInfo
- Publication number
- CN204592456U CN204592456U CN201520206949.7U CN201520206949U CN204592456U CN 204592456 U CN204592456 U CN 204592456U CN 201520206949 U CN201520206949 U CN 201520206949U CN 204592456 U CN204592456 U CN 204592456U
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- China
- Prior art keywords
- bonnet
- valve
- spring
- passage
- cap
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Abstract
The utility model relates to a kind of ratio unloading valve, comprise valve body, bonnet, valve rod, valve seat, cap, lock wire, spring and spring supporting seat, bonnet is fixed on valve body, o shape seal ring is provided with between bonnet and valve body, described spring is arranged among the cavity that the regulating tank of bonnet and cap formed, spring supporting seat is positioned at below spring, described valve rod is slidably arranged in the transition passage of bonnet, valve rod one end is fixedly connected with spring supporting seat, the other end is fixedly connected with valve seat, accurately can carry out off-load in proportion, add working life.
Description
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of ratio unloading valve.
Background technique
Unloading valve is under certain condition, can make the valve of oil hydraulic pump off-load, and its major function is off-load or the loading of automatic control pump.In view of the function of unloading valve, require to there is certain difference between pressure unloading and on-load pressure.Difference is too small, then the off-load of pump is too frequent with loading action; Difference is excessive, then system pressure change too greatly, and this just cannot ensure the accuracy of off-load, and working life also can be affected.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of ratio unloading valve for above drawback, accurately can carry out off-load in proportion, add working life.
For solving the problems of the technologies described above, technological scheme of the present invention is:
A kind of ratio unloading valve, comprise valve body, bonnet, valve rod, valve seat, cap, lock wire, spring and spring supporting seat, described valve body is provided with the inlet passage be interconnected, outlet passage and adjustment passage, described bonnet comprises locking end and adjustable side, the locking end of bonnet and the adjustment passage of valve body are threaded connection, bonnet is made to be fixed on valve body, o shape seal ring is provided with between bonnet and valve body, the adjustable side of bonnet is provided with the regulating tank of cylindrical structural, the locking end of bonnet is provided with transition passage, transition passage is communicated with regulating tank and regulates passage, described cap is fixed on bonnet by locking nut is adjustable, cap is provided with chock plug,
Described spring is arranged among the cavity that the regulating tank of bonnet and cap formed, spring supporting seat is positioned at below spring, described valve rod is slidably arranged in the transition passage of bonnet, valve rod one end is fixedly connected with spring supporting seat, the other end is fixedly connected with valve seat, and described valve seat is arranged in inlet passage;
The wire rope of described lock wire to be diameter be 1.4mm, lock wire one end is fixed on cap, and the other end is fixed on valve body.
Above-mentioned a kind of ratio unloading valve, wherein, described valve rod comprises contraction pole and main valve stem, and described main valve stem is the cylindrical structural of hollow, and contraction pole is plug-type to be fixed in main valve stem, is provided with seal ring between contraction pole and main valve stem.
The beneficial effects of the utility model are:
The utility model structure is simple, easy to operate, according to the distance between required cracking pressure adjustment cap and bonnet, the spring be positioned at wherein is made to be in compressive state, be fixed by reduction nut, carry out secondary fix by lock wire locking again, ensure that the stable, safe and reliable of pressure in using process; Now, due to the pressure effect of spring, spring oppresses by spring supporting seat the valve seat be connected with valve rod, and block input port passage, when the pressure born when inlet passage place reaches setting value, valve seat moves upward because of pressure effect, inlet passage is opened, and pressure draws off from outlet passage, simple to operate, accurately can carry out off-load in proportion, ensure its working life.
The utility model valve rod comprises contraction pole and main valve stem, contraction pole movably inserts in main valve stem, namely the length of valve rod can regulate, therefore, this unloading valve can regulate cracking pressure by the length of the elastic force of spring, distance between cap and bonnet and valve rod etc. is many-sided, applied widely, save cost greatly.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
Fig. 2 is the utility model valve rod sectional view.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
A kind of ratio unloading valve, comprise valve body 1, bonnet 2, valve rod 3, valve seat 4, cap 5, lock wire 6, spring 7 and spring supporting seat 8, described valve body 1 is provided with the inlet passage 9 be interconnected, outlet passage 10 and adjustment passage 11, described bonnet 2 comprises locking end 12 and adjustable side 13, the locking end 12 of bonnet is threaded connection with the adjustment passage 11 of valve body, bonnet 2 is made to be fixed on valve body 1, o shape seal ring 14 is provided with between bonnet 2 and valve body 1, the adjustable side 13 of bonnet is provided with the regulating tank 15 of cylindrical structural, the locking end 12 of bonnet is provided with transition passage 16, transition passage 16 is communicated with regulating tank 15 and regulates passage 11, described cap 5 is fixed on bonnet 2 by locking nut 17 is adjustable, cap 5 is provided with chock plug 18,
Among the cavity that the regulating tank 15 that described spring 7 is arranged on bonnet and cap 5 are formed, spring supporting seat 8 is positioned at below spring 7, described valve rod 3 is slidably arranged in the transition passage 16 of bonnet, valve rod 3 one end is fixedly connected with spring supporting seat 8, the other end is fixedly connected with valve seat 4, described valve seat 4 is arranged in inlet passage 9, described valve rod 3 comprises contraction pole 19 and main valve stem 20, described main valve stem 20 is the cylindrical structural of hollow, described contraction pole is provided with fixed strip 22, main valve stem is provided with fixed hole 23, contraction pole 19 is plug-type to be fixed in main valve stem 20, fixed with coordinating of fixed hole 23 by fixed strip 22, seal ring 21 is provided with between described contraction pole 19 and main valve stem 20,
The wire rope of described lock wire 6 to be diameters be 1.4mm, lock wire 6 one end is fixed on cap 5, and the other end is fixed on valve body 1.
The utility model structure is simple, easy to operate, according to the distance between required cracking pressure adjustment cap and bonnet, the spring be positioned at wherein is made to be in compressive state, be fixed by reduction nut, carry out secondary fix by lock wire locking again, ensure that the stable, safe and reliable of pressure in using process; Now, due to the pressure effect of spring, spring oppresses by spring supporting seat the valve seat be connected with valve rod, and block input port passage, when the pressure born when inlet passage place reaches setting value, valve seat moves upward because of pressure effect, inlet passage is opened, and pressure draws off from outlet passage, simple to operate, accurately can carry out off-load in proportion, ensure its working life.
The utility model valve rod comprises contraction pole and main valve stem, contraction pole movably inserts in main valve stem, namely the length of valve rod can regulate, therefore, this unloading valve can regulate cracking pressure by the length of the elastic force of spring, distance between cap and bonnet and valve rod etc. is many-sided, applied widely, save cost greatly.
Here description of the present utility model and application is illustrative; not want scope of the present utility model is limited in the above-described embodiments but comprises all pitch of flute; therefore; the utility model is not by the restriction of the present embodiment, and the technological scheme that any employing equivalence replacement obtains is all in the scope of the utility model protection.
Claims (2)
1. a ratio unloading valve, it is characterized by, comprise valve body, bonnet, valve rod, valve seat, cap, lock wire, spring and spring supporting seat, described valve body is provided with the inlet passage be interconnected, outlet passage and adjustment passage, described bonnet comprises locking end and adjustable side, the locking end of bonnet and the adjustment passage of valve body are threaded connection, bonnet is made to be fixed on valve body, O-ring seals is provided with between bonnet and valve body, the adjustable side of bonnet is provided with the regulating tank of cylindrical structural, the locking end of bonnet is provided with transition passage, transition passage is communicated with regulating tank and regulates passage, described cap is fixed on bonnet by locking nut is adjustable, cap is provided with chock plug,
Described spring is arranged among the cavity that the regulating tank of bonnet and cap formed, spring supporting seat is positioned at below spring, described valve rod is slidably arranged in the transition passage of bonnet, valve rod one end is fixedly connected with spring supporting seat, the other end is fixedly connected with valve seat, and described valve seat is arranged in inlet passage;
The wire rope of described lock wire to be diameter be 1.4mm, lock wire one end is fixed on cap, and the other end is fixed on valve body.
2. a kind of ratio unloading valve as claimed in claim 1, it is characterized by, described valve rod comprises contraction pole and main valve stem, and described main valve stem is the cylindrical structural of hollow, and contraction pole is plug-type to be fixed in main valve stem, is provided with seal ring between contraction pole and main valve stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206949.7U CN204592456U (en) | 2015-04-09 | 2015-04-09 | A kind of ratio unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206949.7U CN204592456U (en) | 2015-04-09 | 2015-04-09 | A kind of ratio unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204592456U true CN204592456U (en) | 2015-08-26 |
Family
ID=53928608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520206949.7U Expired - Fee Related CN204592456U (en) | 2015-04-09 | 2015-04-09 | A kind of ratio unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204592456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559468A (en) * | 2017-08-30 | 2018-01-09 | 赛洛克流体设备成都有限公司 | The controllable high-leak tightness valve of pressure medium |
-
2015
- 2015-04-09 CN CN201520206949.7U patent/CN204592456U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559468A (en) * | 2017-08-30 | 2018-01-09 | 赛洛克流体设备成都有限公司 | The controllable high-leak tightness valve of pressure medium |
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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: 20150826 Termination date: 20210409 |