CN102072216B - Energy-saving reducing valve for hydraulic system - Google Patents
Energy-saving reducing valve for hydraulic system Download PDFInfo
- Publication number
- CN102072216B CN102072216B CN201110036504.5A CN201110036504A CN102072216B CN 102072216 B CN102072216 B CN 102072216B CN 201110036504 A CN201110036504 A CN 201110036504A CN 102072216 B CN102072216 B CN 102072216B
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- China
- Prior art keywords
- valve
- liquid
- valve body
- valve plug
- main valve
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- 239000007788 liquid Substances 0.000 claims abstract description 73
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 description 14
- 238000004134 energy conservation Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses an energy-saving reducing valve for a hydraulic system. The reducing valve comprises a valve body (1), a main valve plug (2), a regulating piston (3) and a regulating screw rod (4), wherein the main valve plug (2) is connected on the regulating piston (3) via a first spring (5); the regulating screw rod pushes against the regulating piston (3); the main valve plug (2) is provided with valve plug channels communicated with a liquid inlet (6) and a liquid outlet (7) inside; the valve plug channels at least comprise cavities (8) between the main valve plug (2) and the inner walls of the valve body (1); and the cavities (8) are formed by inward nicks arranged on the contact surfaces of the main valve plug (2) and the inner walls of the valve body (1). The energy-saving reducing valve has the following advantages: by adopting the energy-saving reducing valve, the liquid at the liquid inlet can enter into the liquid outlet only when the liquid pressure in a high pressure loop is slightly greater than the liquid pressure in a low pressure loop, so the energy loss is less, energy is saved and heat emission in the system is less, thus prolonging the service life of the whole hydraulic system.
Description
Technical field:
The present invention relates to valve field, is specifically a kind of energy-saving pressure relief valve for hydraulic system.
Background technique:
At present, high and low pressure two is often had to overlap loop in general hydraulic system, and the low pressure liquid of low tension loop or be provided by a set of independently oil hydraulic pump, low pressure liquid is provided by high tension loop to low tension loop by reduction valve, the former is due to the long-term loaded-up of oil hydraulic pump, so energy loss is large, when the latter's high tension loop provides liquid by reduction valve to low tension loop, the pressure of the highly pressurised liquid in high tension loop is larger, can generate heat after being reduced pressure by reduction valve, and waste a large amount of energy; Simultaneously also there is hydraulic system and will generate heat in above-mentioned two schemes, and hydraulic medium is apt to deteriorate, makes the whole hydraulic system life-span, performance declines all to some extent.
Summary of the invention:
The technical problem to be solved in the present invention, when being to provide the fluid pressure of a kind of fluid pressure when high tension loop slightly larger than low tension loop, high tension loop just provides the energy-saving pressure relief valve for hydraulic system of liquid to low tension loop.
Technical solution of the present invention is, the energy-saving pressure relief valve for hydraulic system of following structure is provided, comprise valve body, main valve plug, regulating piston and adjusting screw rod, described main valve plug and regulating piston are all loaded in valve body, described main valve plug is connected on regulating piston through the first spring, described main valve plug and valve interior wall Spielpassung; Described adjusting screw rod withstands regulating piston; Described valve body is provided with liquid entering hole and liquid outlet, and liquid entering hole place is high tension loop, and liquid outlet place is low tension loop.
Be provided with the valve core channel that can communicate with liquid entering hole and liquid outlet in described main valve plug, described valve core channel at least comprises the cavity between main valve plug and valve interior wall, and described cavity is that the surface of contact of main valve plug and valve interior wall inwardly has breach and formed.
To adopt after above structure compared with prior art, the present invention has the following advantages: adopt structure of the present invention, when the fluid pressure of the fluid pressure in high tension loop a little more than low tension loop, namely the fluid pressure at liquid entering hole place is a little more than the fluid pressure at liquid outlet place, liquid-driving main valve plug now in high tension loop, make main valve plug moves (according to the difference of the position that liquid in-out mouth is arranged, also may be move down, here the convenience just in order to set forth), move along with on main valve plug, valve core channel also on move, namely the cavity between main valve plug and valve interior wall also on move, thus liquid entering hole and liquid outlet are all communicated with cavity, liquid just enters cavity from liquid entering hole and enters low tension loop through liquid outlet again, when the fluid pressure in high tension loop raises, and when exceeding certain threshold value, liquid-driving main valve plug continues to rise, thus makes cavity and liquid entering hole or liquid outlet obstructed, even if high tension loop fluid pressure continues to raise, the liquid in high tension loop also can not enter low tension loop, that is, adopt the present invention, only have when the fluid pressure in high tension loop is slightly larger than the fluid pressure (spring pressure of the first spring can be regulated to regulate pressure difference by adjusting screw rod) in low tension loop, the liquid of liquid entering hole just can enter in the related system of liquid outlet and go, advantage is that energy loss is little, energy-conservation, system internal heat generation is few, thus also extends the working life of whole hydraulic system.
As improvement, described valve core channel also comprises the main passage all communicated with cavity and liquid entering hole, and described main passage arranges in valve core channel, and like this, main valve plug of being more convenient for communicates with liquid entering hole.
As improvement, be also provided with one-way valve in described valve body, described one-way valve is located at liquid entering hole or liquid outlet place, one-way valve comprises the second spring and nonreturn valve core, like this, effectively prevent the liquid backflow entering low tension loop, improve reliability of the present invention and expand using scope.
As improvement, described one-way valve can also be located in main valve plug, and the second described spring one end is fixed on the end face of main valve plug inside, the other end is connected with nonreturn valve core, and described nonreturn valve core withstands main passage mouth, like this, one-way valve is contained in main valve plug, is convenient to install and processing.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the energy-saving pressure relief valve embodiment 1 for hydraulic system of the present invention.
Fig. 2 is the structural representation of the energy-saving pressure relief valve embodiment 2 for hydraulic system of the present invention.
Fig. 3 is the structural representation of the energy-saving pressure relief valve embodiment 3 for hydraulic system of the present invention.
Shown in figure: 1, valve body, 2, main valve plug, 3, regulating piston, 4, adjusting screw rod, the 5, first spring, 6, liquid entering hole, 7, liquid outlet, 8, cavity, the 9, second spring, 10, nonreturn valve core, 11, handwheel, 12, back-up ring, 13, leakage opening, 14 and cap, 15, main passage, the 16, the 3rd spring.
Embodiment:
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Embodiment 1, as shown in Figure 1, energy-saving pressure relief valve for hydraulic system of the present invention, comprise valve body 1, main valve plug 2, regulating piston 3 and adjusting screw rod 4, described main valve plug 2 and regulating piston 3 are all loaded in valve body 1, described main valve plug 2 is connected on regulating piston 3 through the first spring 5, described main valve plug 2 and valve body 1 inwall Spielpassung; Described adjusting screw rod withstands regulating piston 3; Described valve body 1 is provided with liquid entering hole 6 and liquid outlet 7, and liquid entering hole 6 place is high tension loop, and liquid outlet 7 place is low tension loop.
The valve core channel that can communicate with liquid entering hole 6 and liquid outlet 7 is provided with in described main valve plug 2, described valve core channel at least comprises the cavity 8 between main valve plug 2 and valve body 1 inwall, and described cavity 8 is that main valve plug 2 inwardly has breach with the surface of contact of valve body 1 inwall and formed.
Described liquid entering hole 6 refers to the annular pass be arranged on valve body 1, and described annular pass can communicate with cavity 8, and described liquid outlet 7 is provided with one-way valve, and described one-way valve comprises the second spring 9 and nonreturn valve core 10.
Described adjusting screw rod 4 is provided with handwheel 11, is rotated and makes adjusting screw rod 4 screw in or screw out valve body, thus regulate the pressure of the first spring 5 by handwheel 11.
Described main valve plug 2 upper end connects the first spring 5, and the back-up ring 12 be located on valve body is withstood in lower end, thus is blocked by main valve plug, spacing to main valve plug; Described valve body also has leakage opening 13, and described leakage opening 13 is when main valve plug moves, and pressure on the partially liq in valve body is escaped and enter in liquid tank.
The working principle of embodiment 1: when the fluid pressure of the fluid pressure in high tension loop a little more than low tension loop, namely the fluid pressure at liquid entering hole place is a little more than the fluid pressure at liquid outlet place, now, cavity all communicates with liquid entering hole and liquid outlet, liquid-driving main valve plug in high tension loop, makes main valve plug moves, moves along with on main valve plug, cavity between main valve plug and valve interior wall also on move, liquid just enters cavity from liquid entering hole and enters low tension loop through liquid outlet again; When the hydraulic pressure in high tension loop raises, and when exceeding certain threshold value (pressure adjustable according to the first spring saves), liquid-driving main valve plug continues to rise, thus make cavity and liquid entering hole obstructed, even if high tension loop hydraulic pressure continues to raise, the liquid in high tension loop also can not enter low tension loop.
Embodiment 2, as shown in Figure 2, embodiment 2 and 1 to be differently, valve body upper end is provided with one and cap 14, described adjusting screw rod screw and in cap 14; Described valve core channel also comprises the main passage 15 all communicated with cavity and liquid entering hole; Described one-way valve can also be located in main valve plug 2, and the second described spring one end is fixed on the end face of main valve plug inside, and the other end is connected with nonreturn valve core, and described nonreturn valve core withstands main passage mouth.
The principle of embodiment 2 and 1 similar, therefore not to repeat here.
Embodiment 3, as shown in Figure 3, the difference of embodiment 3 and 1,2 is, the position of liquid entering hole and liquid outlet is different, just contrary with the position of embodiment 1,2, so the position that one-way valve is installed is also different, main valve plug is also provided with the 3rd spring 16 in addition, one end of the 3rd described spring 16 is fixed on the lower end of main valve plug, and the other end is fixed on valve body.
Claims (1)
1. the energy-saving pressure relief valve for hydraulic system, comprise valve body (1), main valve plug (2), regulating piston (3) and adjusting screw rod (4), described main valve plug (2) and regulating piston (3) are all loaded in valve body (1), described main valve plug (2) is connected on regulating piston (3) through the first spring (5), described main valve plug (2) and valve body (1) inwall Spielpassung; Described adjusting screw rod withstands regulating piston (3); Described valve body (1) is provided with liquid entering hole (6) and liquid outlet (7), liquid entering hole (6) place is high tension loop, liquid outlet (7) place is low tension loop, it is characterized in that: in described main valve plug (2), be provided with the valve core channel that can communicate with liquid entering hole (6) and liquid outlet (7), described valve core channel at least comprises the cavity (8) between main valve plug (2) and valve body (1) inwall, and the surface of contact that described cavity (8) is main valve plug (2) and valve body (1) inwall inwardly has that breach formed; Described valve core channel also comprises the main passage (15) all communicated with cavity (8) and liquid entering hole (6), and described main passage (15) arranges in valve core channel; Described liquid entering hole (6) is arranged in the middle part of valve body and also laterally runs through valve body wall, and liquid entering hole (6) is communicated with cavity (8) through the passage be arranged in valve body wall; Also one-way valve is provided with in described valve body (1), described one-way valve is located at liquid outlet (7) place, described liquid outlet is arranged at the lower end of valve body, described one-way valve be liquid entering hole to liquid outlet one-way conduction, one-way valve comprises the second spring (9) and nonreturn valve core (10); Main valve plug is also provided with the 3rd spring (16), one end of the 3rd described spring (16) is fixed on the lower end of main valve plug, and the other end is fixed on valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110036504.5A CN102072216B (en) | 2011-01-30 | 2011-01-30 | Energy-saving reducing valve for hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110036504.5A CN102072216B (en) | 2011-01-30 | 2011-01-30 | Energy-saving reducing valve for hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102072216A CN102072216A (en) | 2011-05-25 |
| CN102072216B true CN102072216B (en) | 2014-12-17 |
Family
ID=44030900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110036504.5A Expired - Fee Related CN102072216B (en) | 2011-01-30 | 2011-01-30 | Energy-saving reducing valve for hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102072216B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563141B (en) * | 2012-01-02 | 2013-11-27 | 林友根 | Direct-acting internally piloted one-way sequence valve |
| CN102563183A (en) * | 2012-01-02 | 2012-07-11 | 林友根 | Direct-acting externally piloted one-way sequence valve |
| CN102563140A (en) * | 2012-01-02 | 2012-07-11 | 林友根 | Pilot-operated one-way sequence valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943202A (en) * | 2010-08-22 | 2011-01-12 | 林友根 | Link bolt with pilot type reducing valve |
| CN201934411U (en) * | 2011-01-30 | 2011-08-17 | 林友根 | Energy-saving pressure relief valve of hydraulic system |
-
2011
- 2011-01-30 CN CN201110036504.5A patent/CN102072216B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943202A (en) * | 2010-08-22 | 2011-01-12 | 林友根 | Link bolt with pilot type reducing valve |
| CN201934411U (en) * | 2011-01-30 | 2011-08-17 | 林友根 | Energy-saving pressure relief valve of hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102072216A (en) | 2011-05-25 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |