CN204436950U - A kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating - Google Patents
A kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating Download PDFInfo
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- CN204436950U CN204436950U CN201420766186.7U CN201420766186U CN204436950U CN 204436950 U CN204436950 U CN 204436950U CN 201420766186 U CN201420766186 U CN 201420766186U CN 204436950 U CN204436950 U CN 204436950U
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- relief valve
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Abstract
The utility model relates to a kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating, comprise relief valve valve body, in described relief valve body cavity, spool is installed, this spool one end is set to conical structure, this conical structure outer end connects one section of cylindrical body, oil inlet hole and throttle orifice is offered respectively, described cylindrical body outer end fixed installation drum-type leather bag outside relief valve valve body; Offer handle installing hole outside described relief valve valve body, spool arranges spring and this outer spring end is connected to regulating handle inner end.The utility model beneficial effect is: when there is pressure oil in P hole, spool is pushed open by oil pressure, pressure oil enters in drum-type leather bag simultaneously, drum-type leather bag outwards expands, act on large tens times of force rate conventional outflow valve on spool, increase spring force simultaneously, be increased in the active force to spool under the low-pressure of pole, make cracking pressure lower, accurate voltage regulating can be carried out to oil hydraulic circuit being low to moderate within the scope of 0.5MPa ~ 0.005MPa.
Description
Technical field
The utility model relates to a kind of hydraulic pressure control valve, particularly relates to a kind of drum-type super-low voltage relief valve of accurate voltage regulating under the low-pressure of pole.
Background technique
Relief valve is a kind of hydraulic pressure control valve, in hydraulic equipment, mainly play level pressure overflow effect, voltage stabilizing, system unloaded and safety protection effect.Level pressure overflow effect is that metering pump provides constant flow rate in metering pump flow restriction control system; When system pressure increases, traffic demand can be made to reduce; Now, relief valve is opened, and excess traffic is overflow oil sump tank, and ensure relief valve inlet pressure, namely pump discharge pressure is constant; Pressure stabilization function refers to that relief valve is connected on oil circuit, and relief valve produces back pressure, and moving element stationarity increases; System unloaded effect refers to the solenoid valve of the excessive small flow of remote control mouth serial connection at relief valve, and when the solenoid is energized, the remote control mouth of relief valve leads to fuel tank, now oil hydraulic pump off-load, and relief valve now uses as unloading valve; When safety protection effect refers to system worked well, valve closing, opens overflow when only having load to exceed the limit of regulation, carries out overload protection, system pressure is no longer increased; Generally have in practical application: be used as unloading valve, make remote pressure regulating valve, make high low pressure multilevel control valve, make sequence valve for generation of back pressure.
Existing relief valve generally has two kinds of structures and direct acting type relief valve, pilot operated compound relief valve; Large by range of regulation to the major requirement of relief valve, override pressure is little, pressure oscillation is little, be active in one's movements, overload capacity is large, noise is little.
This case it is important to note that, for with the structure of overflow valve, on the basis keeping shell and each assembly existing, its structure is improved, namely usually our hydraulic overflow valve regulation pressure used, at more than 0.5MPa, when needs regulate pressure at below 0.1MPa, has not had relief valve that can be practical to accomplish, need to adopt the external valve of complicated method or import costliness to replace, just there is no ready-made relief valve to select when particularly pressure is more low to moderate 0.01MPa.Therefore, for above aspect, need reasonably to improve prior art.
Model utility content
For above defect, the utility model provides a kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating, makes it can carry out accurate voltage regulating to oil hydraulic circuit, to solve many deficiencies of prior art being low to moderate within the scope of 0.5MPa ~ 0.005MPa.
For achieving the above object, the utility model is by the following technical solutions:
A kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating, comprise relief valve valve body, in described relief valve body cavity, spool is installed, this spool wherein one end is set to conical structure, this conical structure outer end connects one section of cylindrical body, a P oil inlet hole is offered outside the relief valve valve body being in this conical structure side, a pressure oil path is offered between P oil inlet hole to drum-type leather bag, and a throttle orifice is set on pressure oil path, meanwhile, described cylindrical body outer end fixed installation drum-type leather bag;
Offer handle installing hole outside described relief valve valve body, spool arranges spring and this outer spring end is connected to regulating handle inner end, this regulating handle inner end is inserted in handle installing hole.
Correspondingly, described drum-type leather bag outer surface is adjacent to valve interior wall face;
Described spool outer installment annular drum-type leather bag and this inside and outside both sides of drum-type leather bag are adjacent on relief valve valve interior wall face respectively; When P oil inlet hole has pressure oil, spool is pushed open by pressure F1, pressure oil enters in drum-type leather bag by the middle pressure oil path arranging throttle orifice simultaneously, drum-type leather bag is stressed, and F2 effect is outside expands, the traditional relief valve of force rate acted on spool amplifies tens times, pressure F2 acts on the tail end of spool, increases spring force F3 simultaneously, improves its low pressure setting accuracy; When pressure F1 and pressure F2 makes a concerted effort to be greater than spring setting spring power F3, spool is opened, and realize overflow, when pressure F1 and pressure F2 makes a concerted effort to be less than spring force F3, spool is closed under the action of the spring.
T oil outlet is offered in described relief valve valve body outside.
The beneficial effect being beneficial to the drum-type super-low voltage relief valve of accurate voltage regulating described in the utility model is: when P oil inlet hole has pressure oil, spool is pushed open by pressure F1, pressure oil enters in drum-type leather bag by the middle pressure oil path arranging throttle orifice simultaneously, drum-type leather bag is stressed, and F2 effect is outside expands, the traditional relief valve of force rate acted on spool amplifies tens times, pressure F2 acts on the tail end of spool, increase spring force F3 simultaneously, improve its low pressure setting accuracy, be increased in the active force to spool under the low-pressure of pole, thus cracking pressure can be made lower, accurate voltage regulating can be carried out being low to moderate within the scope of 0.5MPa ~ 0.005MPa to oil hydraulic circuit.
Accompanying drawing explanation
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the structural representation of the drum-type super-low voltage relief valve being beneficial to accurate voltage regulating described in the utility model embodiment.
In figure:
1, relief valve valve body; 2, regulating handle; 3, spool; 4, spring; 5, drum-type leather bag; 6, throttle orifice.
Embodiment
As shown in Figure 1, the drum-type super-low voltage relief valve being beneficial to accurate voltage regulating described in the utility model embodiment, comprise relief valve valve body 1, in described relief valve valve body 1 inner chamber, spool 3 is installed, this spool 3 is wherein set to conical structure in one end, this conical structure outer end connects one section of cylindrical body, a P oil inlet hole is offered outside the relief valve valve body 1 being in this conical structure side, a pressure oil path is offered between P oil inlet hole to drum-type leather bag, and a throttle orifice 6 is set on pressure oil path, meanwhile, described cylindrical body outer end fixed installation drum-type leather bag 5;
Correspondingly, offer handle installing hole outside described relief valve valve body 1, spool 3 is arranged spring 4 and this spring 4 outer end is connected to regulating handle 2 inner end, this regulating handle 2 inner end is inserted in handle installing hole;
Correspondingly, described drum-type leather bag 5 outer surface is adjacent to valve interior wall face; When P oil inlet hole has pressure oil, spool 3 is pushed open by pressure F1, pressure oil enters in drum-type leather bag 5 by the middle pressure oil path arranging throttle orifice 6 simultaneously, drum-type leather bag 5 is stressed, and F2 effect is outside expands, the traditional relief valve of force rate acted on spool 3 amplifies tens times, pressure F2 acts on the tail end of spool 3, increase spring force F3 simultaneously, improve its low pressure setting accuracy, be increased in the active force to spool under the low-pressure of pole, thus cracking pressure can be made lower, accurate voltage regulating can be carried out to oil hydraulic circuit being low to moderate within the scope of 0.5MPa ~ 0.005MPa; When pressure F1 and pressure F2 makes a concerted effort to be greater than spring 4 setting spring power F3, spool 3 is opened, and realizes overflow, and when pressure F1 and pressure F2 makes a concerted effort to be less than spring force F3, spool 3 is closed under spring 4 acts on; In addition, T oil outlet is offered in described relief valve valve body 1 outside.
The above-mentioned description to embodiment can understand and apply this case technology for the ease of those skilled in the art, person skilled in the art obviously can make various amendment to these examples easily, and General Principle described herein is applied in other embodiment and need not through performing creative labour.Therefore, this case is not limited to above embodiment, and those skilled in the art is according to the announcement of this case, and the improvement made for this case and amendment all should in the protection domains of this case.
Claims (3)
1. be beneficial to a drum-type super-low voltage relief valve for accurate voltage regulating, comprise relief valve valve body (1), it is characterized in that:
In described relief valve valve body (1) inner chamber, spool (3) is installed, this spool (3) is wherein set to conical structure in one end, this conical structure outer end connects one section of cylindrical body, an oil inlet hole is offered in relief valve valve body (1) outside being in this conical structure side, described cylindrical body outer end fixed installation drum-type leather bag (5);
Offered a pressure oil path between described oil inlet hole and drum-type leather bag (5), the neutral position being positioned at this pressure oil path is provided with a throttle orifice (6);
Handle installing hole is offered in described relief valve valve body (1) outside, spool (3) is arranged spring (4) and this spring (4) outer end is connected to regulating handle (2) inner end, and this regulating handle (2) inner end is inserted in handle installing hole.
2. relief valve according to claim 1, is characterized in that: described drum-type leather bag (5) outer surface is adjacent to valve interior wall face.
3. the drum-type super-low voltage relief valve being beneficial to accurate voltage regulating according to claim 1, is characterized in that: described relief valve valve body (1) outside sets out oilhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766186.7U CN204436950U (en) | 2014-12-09 | 2014-12-09 | A kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766186.7U CN204436950U (en) | 2014-12-09 | 2014-12-09 | A kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating |
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| Publication Number | Publication Date |
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| CN204436950U true CN204436950U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420766186.7U Active CN204436950U (en) | 2014-12-09 | 2014-12-09 | A kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating |
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| CN (1) | CN204436950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110402A (en) * | 2021-12-01 | 2022-03-01 | 江苏中科朗润智能科技有限公司 | Oil way distributor control valve and oil way on-off control method |
-
2014
- 2014-12-09 CN CN201420766186.7U patent/CN204436950U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110402A (en) * | 2021-12-01 | 2022-03-01 | 江苏中科朗润智能科技有限公司 | Oil way distributor control valve and oil way on-off control method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201508 Shanghai city Jinshan District Shanyang Zhen Shan Feng Road No. 58 Patentee after: SHANGHAI CHAOTIAN INDUSTRY CO., LTD. Address before: 201508 Jinshan District, Shanyang Town, Zhu Shan Road, No. 10, building 451, No. Patentee before: Shanghai Chaotian Industrial Co., Ltd. |