CN203348222U - High pressure relief protection device of hydraulic system - Google Patents
High pressure relief protection device of hydraulic system Download PDFInfo
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- CN203348222U CN203348222U CN 201320363758 CN201320363758U CN203348222U CN 203348222 U CN203348222 U CN 203348222U CN 201320363758 CN201320363758 CN 201320363758 CN 201320363758 U CN201320363758 U CN 201320363758U CN 203348222 U CN203348222 U CN 203348222U
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- hydraulic system
- high pressure
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Abstract
The utility model discloses a high pressure relief protection device of a hydraulic system. The high pressure relief protection device comprises a hydraulic pump, an electromagnetic relief valve, a high pressure filter and a one-way valve. The hydraulic pump is connected with the electromagnetic relief valve which is connected with the high pressure filter, the high pressure filter is connected with the one-way valve, and the high pressure relief protection device of the hydraulic system further comprises an electromagnetic ball valve and an oil return tank. One end of the electromagnetic ball valve is connected with the one-way valve, and the other end of the electromagnetic ball valve is connected with oil return tank. On the condition that a main machine matched with the hydraulic system shuts down, pressure relief is carried out automatically, and potential safety hazards are reduced. After pressure in a high pressure pipeline is relieved to a certain pressure point, the pressure in the high pressure pipeline is maintained to be constant to a pretty low pressure value, and when the hydraulic pump in the hydraulic system is started again, pressure impact is reduced, elements in the hydraulic system are protected, and the hydraulic system can be more user-friendly.
Description
Technical field
The utility model relates to a kind of pressure protective device, is specifically related to a kind of high pressure relief protective gear of hydraulic system.
Background technique
Acting as by changing pressure of hydraulic system increases active force.A complete hydraulic system is comprised of five parts, i.e. dynamical element, executive component, control unit, auxiliary element (annex) and hydraulic oil.The quality of a hydraulic system depend on system rationality, system element performance quality, the pollution protection of system and processing, and last point is particularly important.The domestic hydraulics of China improves a lot in recent years, no longer merely uses external hydraulics to be processed.At present in the hydraulic system of every profession and trade, be provided with the hydraulic element such as electromagnetic relief valve, high pressure filter, one-way valve in the pressure duct of oil hydraulic pump outlet, and these hydraulic element integrated installations are on the outlet valve block of oil hydraulic pump, beautiful shape, save space, reduced leakage point.The hydraulic oil that oil hydraulic pump is confessed flows to electromagnetic relief valve and high pressure filter at first simultaneously, when the electromagnet of electromagnetic relief valve is connected, make the hydraulic oil that oil hydraulic pump is got directly flow back to fuel tank, realize the non-loaded startup of oil hydraulic pump, avoided oil hydraulic pump to start moment, motor current is excessive, damages motor.Filter net sheet in high pressure filter is filtered the hydraulic oil of through-flow mistake, guarantees the turbidity test of fluid, has extended the working life of hydraulic element.Hydraulic oil after high pressure filter filters is flowed through after one-way valve, and one-way valve can prevent in pipeline the fluid oil hydraulic pump that flows backwards back, and oil hydraulic pump is played a protective role.The hydraulic oil that oil hydraulic pump is confessed, after one-way valve, flows to the control valve platform of hydraulic system by the pipeline of hydraulic system, then supply with executive component (oil hydraulic cylinder or oil hydraulic motor).After the hydraulic system matched host machine is shut down, oil hydraulic pump quits work, and oil hydraulic pump is to the high pressure oil off-load at once in pipeline between one-way valve, but, always in high pressure conditions, there is potential safety hazard in the pressure duct after one-way valve (one-way valve is between the control valve platform).
The model utility content
The utility model has overcome the deficiencies in the prior art, and a kind of high pressure relief protective gear of hydraulic system is provided, and to expect to reduce security of system hidden danger, reduces compression shock, makes hydraulic system hommization more.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of high pressure relief protective gear of hydraulic system, comprise oil hydraulic pump, electromagnetic relief valve, high pressure filter, one-way valve; Described oil hydraulic pump is connected with described electromagnetic relief valve, and described electromagnetic relief valve is connected with described high pressure filter, and described high pressure filter is connected with described one-way valve; The high pressure relief protective gear of described hydraulic system also comprises Solenoid ball valve and oil sump tank, and described Solenoid ball valve one end is connected with described one-way valve; The described Solenoid ball valve the other end is connected with described oil sump tank.
Further technological scheme is that Solenoid ball valve is the bi-bit bi-pass Solenoid ball valve.
Further technological scheme is that the high pressure relief protective gear of hydraulic system also comprises for gathering and send hydraulic system pressure information pressure switch and hydraulic system signal processing apparatus; Described pressure switch is connected with described hydraulic system signal processing apparatus; Described hydraulic system signal processing apparatus is connected with described Solenoid ball valve.
Further technological scheme is that the high pressure relief protective gear of hydraulic system also comprises pressure measuring tie-in and pressure measurement flexible pipe, and described pressure measurement flexible pipe is connected with described pressure switch, and described pressure measurement flexible pipe is connected with described pressure measuring tie-in; Described pressure measuring tie-in is connected with described Solenoid ball valve.
Further technological scheme is that the hydraulic system signal processing apparatus is central control chamber.
Further technological scheme is that pressure switch is wired or wireless the connection with described hydraulic system signal processing apparatus.
Further technological scheme is that the hydraulic system signal processing apparatus is wired or wireless the connection with described Solenoid ball valve.
Compared with prior art, the beneficial effects of the utility model are: the utility model is in hydraulic system matched host machine shutdown situation, central control chamber sends instruction, the bi-bit bi-pass Solenoid ball valve is connected, hydraulic system pump discharge high-pressure ball valve, to pressure pressure release in the pressure duct between the control valve platform, has reduced potential safety hazard; In pressure duct, pressure unloads to a certain pressure spot, and the bi-bit bi-pass Solenoid ball valve disconnects, and in pressure duct, pressure remains on a certain lower force value; when in hydraulic system, oil hydraulic pump starts again; reduce compression shock, protected the element in the hydraulic system, make hydraulic system hommization more.
The accompanying drawing explanation
The structural representation that Fig. 1 is an embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1, Fig. 1 shows an embodiment's of the utility model structural representation.The high pressure relief protective gear of the utility model hydraulic system comprises oil hydraulic pump 1, electromagnetic relief valve 2, high pressure filter 3, one-way valve 4; Oil hydraulic pump 1 is connected by connecting tube with electromagnetic relief valve, and electromagnetic relief valve 2 is connected by connecting tube with high pressure filter 3, and high pressure filter 3 is connected by connecting tube with one-way valve 4; As preferred embodiment, in the high pressure relief protective gear of the present embodiment hydraulic system, pipeline one end is connected with the hydraulic system high-voltage tube by three-way steel tube, the other end takes back fuel tank, bi-bit bi-pass Solenoid ball valve 9 in the high pressure relief protective gear of the present embodiment hydraulic system is fixed in an installation valve piece, the valve piece is installed and is connected with the pipeline of the high pressure relief protective gear of the present embodiment hydraulic system by pipe joint; Pressure switch 6 is connected with the off-load pipeline by two-position two-way solenoid valve with pressure measurement flexible pipe 7 by pressure measuring tie-in 8.As preferred embodiment, in the present embodiment, also comprise for gathering and send hydraulic system pressure information pressure switch and hydraulic system signal processing apparatus; Pressure switch is connected with the hydraulic system signal processing apparatus; The hydraulic system signal processing apparatus is connected with the bi-bit bi-pass Solenoid ball valve.Specific embodiment is that in the present embodiment, the hydraulic system signal processing apparatus is central control chamber 5.
The hydraulic oil that in hydraulic system, oil hydraulic pump 1 is confessed, after electromagnetic relief valve 2 and high pressure filter 3, flows to one-way valve 4, then by pipeline flow direction control valve platform and executive component.After the hydraulic system matched host machine is shut down, oil hydraulic pump 1 fuel cut-off in hydraulic system, oil hydraulic pump 1 is to pressure off-load at once in the pipeline between one-way valve 4; One-way flow principle due to one-way valve 4, pressure in pipeline after one-way valve 4 will keep, at this moment pressure switch 6 is passed to central control chamber 5 by pressure signal in pressure duct, pressure switch and central control chamber can be connected by wired mode and the transmission of signal, also can connect and signal transmits by wireless connect technology; Specific embodiment is that in the present embodiment, pressure switch 6 and central control chamber 5 are to pass through wired connection.Central control chamber sends instruction, bi-bit bi-pass Solenoid ball valve 9 obtains electric, central control chamber and bi-bit bi-pass Solenoid ball valve can be connected and carry out the signal transmission by the wired connection mode, can be also to carry out wireless connections and signal transmission by wireless connect technology, specific embodiment is that in the present embodiment, bi-bit bi-pass Solenoid ball valve 9 is to be connected by the wired connection mode with central control chamber 5.The off-load pipeline is connected, and in pressure duct, hydraulic oil flows back to fuel tank by Solenoid ball valve 8, and in pressure duct, hydraulic fluid pressure reduces, and has reduced potential safety hazard, makes hydraulic system hommization more; After in pressure duct, hydraulic fluid pressure drops to a certain value; pressure switch 6 is passed to central control chamber by pressure signal in pressure duct; central control chamber sends instruction; bi-bit bi-pass Solenoid ball valve 9 disconnects; in pressure duct, pressure remains on a certain lower force value, when oil hydraulic pump 1 starts again in hydraulic system, plays buffer function; reduce compression shock, protected the element in the hydraulic system.Specific embodiment is, in the present embodiment, pressure switch 6 arranges 1 high point pressure P1 and 1 low spot pressure P 2(≤3MPa according to system pressure P0), after the hydraulic system matched host machine is shut down, the oil hydraulic pump 1 of hydraulic system quits work, during system pressure >=P1, pressure switch 6 is given pressure signal of central control chamber, and bi-bit bi-pass Solenoid ball valve 9 is connected, the pressure release of hydraulic system pressure duct; When system pressure drops to P2, the Solenoid ball valve 9 of bi-bit bi-pass disconnects, and in pressure duct, pressure remains on a certain lower force value, when oil hydraulic pump starts again in hydraulic system, plays buffer function, has reduced compression shock, has protected the element of hydraulic system.
" embodiment " that spoken of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included at least one embodiment that the application's generality describes.In specification, a plurality of local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while in conjunction with any embodiment, describing a specific features, structure or characteristics, what advocate is to realize that in conjunction with other embodiments this feature, structure or characteristics also drop in scope of the present utility model.
Although a plurality of explanatory embodiment with reference to model utility is described the utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and mode of executions, and these are revised and within mode of execution will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to constituent elements and/or the layout of subject combination layout.Except modification that constituent elements and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (7)
1. the high pressure relief protective gear of a hydraulic system, comprise oil hydraulic pump, electromagnetic relief valve, high pressure filter, one-way valve; Described oil hydraulic pump is connected with described electromagnetic relief valve, and described electromagnetic relief valve is connected with described high pressure filter, and described high pressure filter is connected with described one-way valve; It is characterized in that: the high pressure relief protective gear of described hydraulic system also comprises Solenoid ball valve and oil sump tank, and described Solenoid ball valve one end is connected with described one-way valve; The described Solenoid ball valve the other end is connected with described oil sump tank.
2. the high pressure relief protective gear of hydraulic system according to claim 1, is characterized in that described Solenoid ball valve is the bi-bit bi-pass Solenoid ball valve.
3. the high pressure relief protective gear of hydraulic system according to claim 1, is characterized in that the high pressure relief protective gear of described hydraulic system also comprises for gathering and send pressure switch and the hydraulic system signal processing apparatus of hydraulic system pressure information; Described pressure switch is connected with described hydraulic system signal processing apparatus; Described hydraulic system signal processing apparatus is connected with described Solenoid ball valve.
4. the high pressure relief protective gear of hydraulic system according to claim 3, the high pressure relief protective gear that it is characterized in that described hydraulic system also comprises pressure measuring tie-in and pressure measurement flexible pipe, described pressure measurement flexible pipe is connected with described pressure switch, and described pressure measurement flexible pipe is connected with described pressure measuring tie-in; Described pressure measuring tie-in is connected with described Solenoid ball valve.
5. the high pressure relief protective gear of hydraulic system according to claim 1, is characterized in that described hydraulic system signal processing apparatus is central control chamber.
6. the high pressure relief protective gear of hydraulic system according to claim 3, is characterized in that described pressure switch is wired or wireless the connection with described hydraulic system signal processing apparatus.
7. the high pressure relief protective gear of hydraulic system according to claim 3, is characterized in that described hydraulic system signal processing apparatus and described Solenoid ball valve are wired or wireless the connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320363758 CN203348222U (en) | 2013-06-24 | 2013-06-24 | High pressure relief protection device of hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320363758 CN203348222U (en) | 2013-06-24 | 2013-06-24 | High pressure relief protection device of hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN203348222U true CN203348222U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320363758 Expired - Fee Related CN203348222U (en) | 2013-06-24 | 2013-06-24 | High pressure relief protection device of hydraulic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640848A (en) * | 2016-12-27 | 2017-05-10 | 中国重型机械研究院股份公司 | Buffer type automatic unloading device of power station |
| CN107727827A (en) * | 2017-11-30 | 2018-02-23 | 北京科技大学 | It is a kind of to be used to protrude the bad experimental provision of coal grain explosion |
-
2013
- 2013-06-24 CN CN 201320363758 patent/CN203348222U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640848A (en) * | 2016-12-27 | 2017-05-10 | 中国重型机械研究院股份公司 | Buffer type automatic unloading device of power station |
| CN107727827A (en) * | 2017-11-30 | 2018-02-23 | 北京科技大学 | It is a kind of to be used to protrude the bad experimental provision of coal grain explosion |
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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: 20131218 Termination date: 20170624 |