CN205663948U - Plug -in overflow valve - Google Patents
Plug -in overflow valve Download PDFInfo
- Publication number
- CN205663948U CN205663948U CN201620470375.9U CN201620470375U CN205663948U CN 205663948 U CN205663948 U CN 205663948U CN 201620470375 U CN201620470375 U CN 201620470375U CN 205663948 U CN205663948 U CN 205663948U
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- China
- Prior art keywords
- adjusting screw
- spring
- overflow valve
- screw rod
- plug
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Abstract
The utility model discloses a plug -in overflow valve, including adjusting screw, spring, case and lock nut, the spring sets up between adjusting screw lower extreme and case upper end, and the adjusting screw lower extreme is equipped with the counter bore, and in the counter bore of adjusting screw lower extreme was into stretched to the spring upper end, the spring lower extreme supported and leans on on the step in the middle part of the case, and lock nut closes on adjusting screw soon. The utility model discloses cancel the spare parts that production cycle is long, the machining precision is high such as valve gap and valve barrel on the former overflow valve, reduced the quantity or the volume of all the other spare parts simultaneously, simple structure not only, simple to operate has shortened production cycle moreover greatly, has improved production efficiency, has reduced manufacturing cost. The utility model discloses has avoided during the installation crossing the emergence of fixing a position the phenomenon, has loosened lock nut during the maintenance, with adjusting screw screw out can, the maintenance is changed very conveniently.
Description
Technical field
This utility model relates to a kind of hydraulic valve, the overflow valve of a kind of simple in construction, belongs to hydraulic control component
Technical field.
Background technology
Overflow valve is requisite hydraulic pressure control valve in hydraulic system, typically plays level pressure overflow effect and safety is protected
Protect effect.As it is shown in figure 1, existing overflow valve includes adjusting screw rod 1, valve gap 2, valve pocket 3, spool 4, spring 5 and sealing ring 6, adjust
Joint screw rod 1 screws at valve gap 2 top, and valve pocket 3 is fixed on the downside of valve gap 2, and spool 4 is arranged in valve pocket 3, and spring 5 is arranged on valve
In lid 2.The overflow valve parts of said structure are many, and structure is complicated, not only increases cost, and when installing between each installed surface
Gap is relatively big, cannot install the most at all, positioning phenomenon even occurred, simultaneously because each parts are installed in valve gap and valve
In the cavity of set, dismounting difficulty, maintenance is changed extremely inconvenient.
Utility model content
The purpose of this utility model is to provide the plug-in overflow valve of a kind of simple in construction, low cost, convenient maintenance and replacement.
This utility model is achieved by the following technical programs:
A kind of plug-in overflow valve, including adjusting screw rod, spring, spool and locking nut；Described spring is arranged on regulation
Between screw rod lower end and spool upper end, described adjusting screw rod lower end is provided with counterbore, and spring upper end puts in the heavy of adjusting screw rod lower end
In hole, lower spring end is resisted against on the step in the middle part of spool, and locking nut screws on adjusting screw rod.
The purpose of this utility model can also be realized further by techniques below measure.
Aforesaid plug-in overflow valve, wherein said adjusting screw rod top is provided with interior hexagonal counterbore.
Aforesaid plug-in overflow valve, wherein said spool upper end extends upward spring stem stem, in the middle part of spool radially
Extending a circle positioning step, described positioning step lower end is conical structure.
Aforesaid plug-in overflow valve, taper angle 2 α=28 ° of wherein said cone～32 °.
Aforesaid plug-in overflow valve, is provided with bonded washer, in described bonded washer on the downside of wherein said locking nut
Hole is provided with sealing ring.
This utility model eliminates the production cycle length such as the valve gap on former overflow valve and valve pocket, machining accuracy is high zero
Part, reduces quantity or the volume of remaining parts simultaneously, is not only simple in structure, easy for installation, and substantially reduces production week
Phase, improve production efficiency, reduce production cost.During installation, adjusting screw rod is screwed on plug-in mounting valve body, spool and plug-in mounting
Valve body oil return opening conical surface seal, rotates adjusting screw rod so that spring contraction or elongation, scalable specified pressure of the present utility model
Power, to meet the needs of different operating system, locks finally by locking nut.This utility model avoided location when installing
The generation of phenomenon, unclamps locking nut, is screwed out by adjusting screw rod during maintenance, maintenance is changed very convenient.
Advantage of the present utility model and feature, conciliate carrying out diagram by the non-limitative illustration of preferred embodiment below
Release, these embodiments, be only used as example referring to the drawings and be given.
Accompanying drawing explanation
Fig. 1 is the structural representation of former overflow valve；
Fig. 2 is structural representation of the present utility model.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As in figure 2 it is shown, this utility model includes adjusting screw rod 7, spring 8, spool 9 and locking nut 10.Adjusting screw rod 7 pushes up
Portion is provided with is easy to the interior hexagonal counterbore 71 that inner hexagon spanner is pulled, spring 8 be arranged on adjusting screw rod 7 lower end and spool 9 upper end it
Between, adjusting screw rod 7 lower end is provided with counterbore 72, and spring 8 upper end puts in the counterbore 72 of adjusting screw rod 7 lower end, spring 8 lower end against
On positioning step 93 in the middle part of spool 9, locking nut 10 screws on adjusting screw rod 7, is provided with combination on the downside of locking nut 10
Packing ring 20, is provided with sealing ring 201 in bonded washer 20 endoporus.Spool 9 upper end extends upward spring stem stem 92, in the middle part of it radially
Extending a circle positioning step 93, positioning step 93 lower end is conical structure, taper angle 2 α=28 ° of cone～32 °, this
2 α=30 ° in embodiment.As in figure 2 it is shown, this utility model is screwed on plug-in mounting valve body 30, when system inlet pressure is more than
During spring 8 pressure, spring 8 shrinks, and spool 9 is opened, and hydraulic oil directly flows back to fuel tank, system high pressure off-load by oil return opening, rises
To safeguard protection effect.
In addition to the implementation, this utility model can also have other embodiments, all employing equivalents or equivalence to become
Change the technical scheme of formation, all fall within the protection domain of this utility model requirement.
Claims (5)
1. a plug-in overflow valve, it is characterised in that: include adjusting screw rod, spring, spool and locking nut；Described spring sets
Putting between adjusting screw rod lower end and spool upper end, described adjusting screw rod lower end is provided with counterbore, and spring upper end puts in adjusting screw rod
In the counterbore of lower end, lower spring end is resisted against on the step in the middle part of spool, and locking nut screws on adjusting screw rod.
2. plug-in overflow valve as claimed in claim 1, it is characterised in that: described adjusting screw rod top is provided with interior hexagonal and sinks
Hole.
3. plug-in overflow valve as claimed in claim 1, it is characterised in that: described spool upper end extends upward spring core
Post, radially outward from a circle positioning step in the middle part of spool, described positioning step lower end is conical structure.
4. plug-in overflow valve as claimed in claim 3, it is characterised in that: taper angle 2 α=28 ° of described cone～32 °.
5. plug-in overflow valve as claimed in claim 1, it is characterised in that: it is provided with bonded washer on the downside of described locking nut,
Described bonded washer endoporus is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620470375.9U CN205663948U (en) | 2016-05-23 | 2016-05-23 | Plug -in overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620470375.9U CN205663948U (en) | 2016-05-23 | 2016-05-23 | Plug -in overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205663948U true CN205663948U (en) | 2016-10-26 |
Family
ID=57160851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620470375.9U Active CN205663948U (en) | 2016-05-23 | 2016-05-23 | Plug -in overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205663948U (en) |
-
2016
- 2016-05-23 CN CN201620470375.9U patent/CN205663948U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201102 Address after: No.55 Guangyuan Road, Dantu new town, Zhenjiang City, Jiangsu Province Patentee after: JIANGSU WODE HIGH-TECH AGRICULTURAL EQUIPMENT Co.,Ltd. Address before: 212000 Dantu Zhenjiang Xincheng Industrial Park, Dantu District, Jiangsu Patentee before: JIANGSU ZHENJI MACHINERY MANUFACTURING Co.,Ltd. |