CN202673814U - Hydraulic-control pressure reducing valve - Google Patents
Hydraulic-control pressure reducing valve Download PDFInfo
- Publication number
- CN202673814U CN202673814U CN 201220349170 CN201220349170U CN202673814U CN 202673814 U CN202673814 U CN 202673814U CN 201220349170 CN201220349170 CN 201220349170 CN 201220349170 U CN201220349170 U CN 201220349170U CN 202673814 U CN202673814 U CN 202673814U
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- control
- oil
- valve
- valve rod
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Abstract
The utility model provides a hydraulic-control pressure reducing valve. The hydraulic-control pressure reducing valve comprises a valve block, a valve cover, a valve rod, outer springs, inner springs and a control oil port joint, wherein the valve block comprises an oil through chamber, an oil inlet and an oil return port; the valve cover comprises an oil outlet; the valve rod is arranged in the oil through chamber in a slidable manner and comprises a first small hole and a second small hole, and the oil outlet is optionally communicated with the oil inlet or the oil return port through the first small hole and the second small hole; the first ends of the outer springs are abutted against a control piston, and the second ends of the outer springs are abutted against the valve cover; the inner springs are sleeved outside the valve rod; and the control oil port joint is fixedly arranged at the second end of the oil through chamber, a control oil chamber is formed between the control oil port joint and the control piston, and the control oil port joint comprises a control oil port communicated with the control oil chamber. According to the hydraulic-control pressure reducing valve provided by the utility model, the regulation on output pressure can be very conveniently realized, the operation is simple, and the labor intensity is effectively reduced.
Description
Technical field
The utility model relates to the pressure controlled valve field, in particular to a kind of hydraulic control reduction valve.
Background technique
In recent years, the domestic project Development of Machine Industry was rapid, and product category is more and more, and function and reliability pass by all to have a distinct increment.At present, the operation mechanism of most of engineering machinery all is by hydraulically powered, and hydraulic system also is easier to realize automation, but the compression shock in the hydraulic system may bring the vibrations of complete machine, so that the stationarity variation of complete machine.Therefore, present engineering machinery has higher requirement to automation and the stationarity of hydraulic system.
Decompression hydraulic control handle commonly used when operating, needs tractor driver's Joystick now, then can change its delivery pressure by the corner that changes handle, and the larger then delivery pressure of corner is higher.But this handle need to manually operate, and automaticity is lower, regulates and control very inconvenient.
The model utility content
The utility model aims to provide a kind of hydraulic control reduction valve, can realize easily the adjusting of delivery pressure, and is simple to operate, effectively reduces labor intensity.
To achieve these goals, according to an aspect of the present utility model, provide a kind of hydraulic control reduction valve, having comprised: the valve piece comprises logical oil pocket, the filler opening and the return opening that are communicated with logical oil pocket; Valve pocket is fixedly installed on the first end that leads to oil pocket, comprises oil outlet; Valve rod, be mounted slidably in logical oil pocket, the first end of valve rod is slidably disposed in the valve pocket, and the second end of valve rod is provided with control piston, valve rod comprises the first aperture and second orifice, and oil outlet selectively is communicated with filler opening or return opening by the first aperture and second orifice; Outer spring is sheathed on outside the valve rod, and first end is pressed on the control piston, and the second end is pressed on the valve pocket; Inner spring is sheathed on outside the valve rod, and first end is pressed on the control piston, and the second end is pressed on the step of valve rod; And the control port joint, be fixedly installed on the second end that leads to oil pocket, and formation control oil pocket between the control piston, the control port joint comprises the control port that is communicated with the control oil pocket.
Further, be provided with damping hole on the control port joint, damping hole is communicated with control port with the control oil pocket.
Further, be provided with the oil-feed groove that is communicated with damping hole, formation control oil pocket between oil-feed groove and the control piston on the end face of control port joint near an end of control piston.
Further, valve rod the second end is provided with the pad that is connected on the control piston, and outer spring and inner spring are pressed on the pad.
Further, the second end end of valve rod is provided with stop lug and the card that is connected on the stop lug, and card is embedded in control piston, and pad is pressed on the card.
Further, be between valve pocket and control port joint and the valve piece and be spirally connected, and be provided with sealing configuration between valve pocket and control port joint and the valve piece.
Further, the first aperture is axial aperture, and second orifice is radial hole.
Use the technical solution of the utility model, the hydraulic control reduction valve comprises valve piece, valve pocket, valve rod, outer spring, inner spring and control port joint.Wherein the valve piece comprises logical oil pocket and the filler opening and the return opening that are communicated with logical oil pocket; Valve pocket is fixedly installed on the first end of logical oil pocket, comprises oil outlet; Valve rod is mounted slidably in logical oil pocket, the first end of valve rod is slidably disposed in the valve pocket, the second end of valve rod is fixedly installed control piston, and valve rod comprises the first aperture and second orifice, and valve rod selectively is communicated with filler opening or return opening by the first aperture and second orifice; Outer spring is sheathed on outside the valve rod, and first end is pressed on the control piston, and the second end is pressed on the valve pocket; Inner spring is sheathed on outside the valve rod, and first end is pressed on the control piston, and the second end is pressed on the step of valve rod; The control port joint is fixedly installed on the second end of logical oil pocket, and formation control oil pocket between the control piston, and the control port joint comprises the control port that is communicated with the control oil pocket.In the outer end of control piston the control port joint is set, can controls the oil outlet oil liquid pressure by applying the control oil pressure, simple to operate, easy to adjust reliable, effectively reduce labor intensity, saved cost.
Description of drawings
The accompanying drawing that consists of a part of the present utility model is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Structural representation when Fig. 1 shows hydraulic control reduction valve according to the first embodiment of the present utility model and is in off working state;
Fig. 2 shows the structural representation when in running order according to the first embodiment's of the present utility model hydraulic control reduction valve;
Fig. 3 shows the structural representation according to the second embodiment's of the present utility model hydraulic control reduction valve; And
Fig. 4 shows the hydraulic schematic diagram according to embodiment's of the present utility model hydraulic control reduction valve.
Embodiment
Hereinafter also describe in conjunction with the embodiments the utility model in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
As depicted in figs. 1 and 2, according to the first embodiment of the present utility model, the hydraulic control reduction valve comprises valve piece 10, valve pocket 18, valve rod 17, outer spring 16, inner spring 15 and control port joint 11.Valve piece 10 comprises logical oil pocket 101 and the oil inlet P and the oil return inlet T that are communicated with logical oil pocket 101, and preferably, the bearing of trend of oil inlet P and oil return inlet T is perpendicular to the bearing of trend of logical oil pocket 101.
Valve pocket 18 is fixedly installed on the first end of logical oil pocket 101, comprises oil outlet P '.In axial direction be provided with the valve rod hole that slides for valve rod 17 on the valve pocket 18, radial direction is provided with the radial direction oil hole that is communicated with oil inlet P.Valve rod 17 comprise the first aperture 171 and radially arrange and with second orifice 172(figure that the first aperture 171 is communicated with on without this label), the first aperture 171 is communicated to oil outlet P '.Second orifice 172 on the valve rod 17 selectively is communicated with oil inlet P by this radial direction oil hole.Be threaded between valve pocket 18 and the valve piece 10, and be provided with sealing configuration between valve pocket 18 and the valve piece 10, the oil liquid leakage in the anti-stop-pass oil pocket 101.Preferably, the first aperture 171 herein is in axial direction being arranged on the axial aperture at the center of valve rod 17, and second orifice 172 is the radial hole that radially arranges and be communicated with the first aperture 171.Second orifice 172 can be for a plurality of, can be communicated with oil return inlet T and oil inlet P respectively, can regulate second orifice 172 residing positions by the position of regulating valve stem 17, thereby control oil outlet P ' communicates with oil inlet P or oil return inlet T, and oil outlet P ' selectively is communicated with oil inlet P or oil return inlet T by the first aperture 171 and the second orifice 172 of valve rod 17.
Valve rod 17 is mounted slidably in logical oil pocket 101, the first end of valve rod 17 is slidably disposed in the valve rod hole of valve pocket 18, the second end of valve rod 17 is fixedly installed control piston 12, control piston 12 is slidably disposed in the logical oil pocket 101, and whole logical oil pocket 101 is divided into two parts that do not communicate.Be connected between the second end of valve rod 17 and the control piston 12.Control piston 12 arranges the spring fitting groove with the end that the second end of valve rod 17 is connected, and is provided with card 13 in the spring fitting groove, is outside equipped with pad 14 at card 13, and the inwall of the edge of pad 14 and spring fitting groove fits.The second end end of valve rod 17 is embedded in the groove of control piston 12, and the end has stop lug, and card and pad are connected on the inner side end of stop lug.
The working procedure of the hydraulic control reduction valve of present embodiment is as follows: when control port K did not have the pressure oil access, the hydraulic control reduction valve was in the normal state the position as shown in Figure 1, and control oil pocket Y chamber is connected with control port K through the damping hole 111 on the control port joint 11; Outer spring 16 acts between pad 14 and the valve pocket 18, so that control piston 12 directly is against the right side of control port joint 11; The second orifice 172 of valve rod 17 communicates with the first aperture 171, so that oil outlet P ' and oil return inlet T are connected, oil outlet P ' is in unloading condition; Oil inlet P is cut off mutually with other hydraulic fluid ports or oil pocket, is in packing state; Inner spring 15 acts between pad 14 and the valve rod 17, and the head of the second end of valve rod 17 is limited by card 13, is in position shown in Fig. 1.
In conjunction with referring to shown in Figure 2, when control port K connect pressure oil, the hydraulic control reduction valve was in the working position, and after the damping hole 111 on the control port joint 11, the pressure oil that enters in the control port K enters in the control oil pocket Y.This moment, control piston 12 was subject to active force to the right, overcame the spring force of outer spring 16 and inner spring 15, and control piston 12 can move right, until control piston 12 stress balances.The distance that control piston 12 moves right is relevant with the pressure of control port K: the pressure of control port K is larger, and the distance that control piston 12 moves right is also larger.
When control piston 12 moved right, card 13 and pad 14 also can be along with control piston 12 move right, because the active force of inner spring 15, valve rod 17 also can move right, until the second orifice 172 on the valve rod 17 is connected with oil inlet P.When the second orifice 172 on the valve rod 17 communicated with oil inlet P, oil inlet P can communicate with oil outlet P ' by second orifice 172 and first aperture 171 of valve rod 17, and oil outlet P ' then can build-up pressure.This moment, the pressure of oil outlet P ' can be to valve rod 17 generations axial force left, and this axial force overcomes the spring force of inner spring 15, so that valve rod 17 is to left movement, until valve rod 17 stress balances.If the distance that control piston 12 moves right is larger, then the decrement of inner spring 15 is also larger during valve rod 17 stress balance, and the pressure of oil outlet P ' is also larger so.From the above, in the situation of oil inlet P constant pressure, the pressure of oil outlet P ' can change along with the variation of control port K place pressure.
Because the effect of damping hole 111 on the control port joint 11, when control port K place pressure acute variation, the pressure of oil outlet P ' changes more steady, can not bring larger impact to hydraulic system.So that control piston 12 when moving to limit position, it is maximum that the pressure of oil outlet P ' reaches when the enough height of pressure at control port K place.
In conjunction with referring to shown in Figure 3, according to the second embodiment of the present utility model, itself and the first embodiment are basic identical, and difference is that the oil inlet P in the present embodiment and oil outlet P ' are normal open.In this case, when the hydraulic control reduction valve is worked, even control port K place does not have pilot pressure, oil outlet P ' also has Output pressure, but the pilot pressure of control port K also can produce the control action identical with the first embodiment to the pressure that oil outlet P ' locates.
As shown in Figure 4, be embodiment's of the present utility model hydraulic schematic diagram, as can be seen from the figure, only need to just can make the hydraulic control reduction valve obtain suitable delivery pressure at the pressure oil of control port K place input convenient pressure, satisfy the needs of hydraulic system.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect: the hydraulic control reduction valve comprises valve piece, valve pocket, valve rod, outer spring, inner spring and control port joint.Wherein the valve piece comprises logical oil pocket and the filler opening and the return opening that are communicated with logical oil pocket; Valve pocket is fixedly installed on the first end of logical oil pocket, comprises oil outlet; Valve rod is mounted slidably in logical oil pocket, the first end of valve rod is slidably disposed in the valve pocket, the second end of valve rod is fixedly installed control piston, and valve rod comprises the first aperture and second orifice, and valve rod selectively is communicated with filler opening or return opening by the first aperture and second orifice; Outer spring is sheathed on outside the valve rod, and first end is pressed on the control piston, and the second end is pressed on the valve pocket; Inner spring is sheathed on outside the valve rod, and first end is pressed on the control piston, and the second end is pressed on the step of valve rod; The control port joint is fixedly installed on the second end of logical oil pocket, and formation control oil pocket between the control piston, and the control port joint comprises the control port that is communicated with the control oil pocket.In the outer end of control piston the control port joint is set, can controls the oil outlet oil liquid pressure by applying the control oil pressure, simple to operate, easy to adjust reliable, effectively reduce labor intensity, saved cost.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a hydraulic control reduction valve is characterized in that, comprising:
Valve piece (10) comprises logical oil pocket (101), the filler opening (P) that is communicated with described logical oil pocket (101) and return opening (T);
Valve pocket (18) is fixedly installed on the first end of described logical oil pocket (101), comprises oil outlet (P ');
Valve rod (17), be mounted slidably in described logical oil pocket (101), the first end of described valve rod (17) is slidably disposed in the described valve pocket (18), the second end of described valve rod (17) is provided with control piston (12), described valve rod (17) comprises the first aperture (171) and second orifice (172), and described oil outlet (P ') selectively be communicated with described filler opening (P) or described return opening (T) by described the first aperture (171) and described second orifice (172);
Outer spring (16) is sheathed on outside the described valve rod (17), and first end is pressed on the described control piston (12), and the second end is pressed on the described valve pocket (18);
Inner spring (15) is sheathed on outside the described valve rod (17), and first end is pressed on the described control piston (12), and the second end is pressed on the step of described valve rod (17); And
Control port joint (11), be fixedly installed on the second end of described logical oil pocket (101), and formation control oil pocket (Y) between the described control piston (12), described control port joint (11) comprise the control port (K) that is communicated with described control oil pocket (Y).
2. hydraulic control reduction valve according to claim 1 is characterized in that, is provided with damping hole (111) on the described control port joint (11), and described damping hole (111) is communicated with described control port (K) with described control oil pocket (Y).
3. hydraulic control reduction valve according to claim 1 and 2, it is characterized in that, be provided with the oil-feed groove (112) that is communicated with described damping hole (111) on the end face of described control port joint (11) near an end of described control piston (12), form described control oil pocket (Y) between described oil-feed groove (112) and the control piston (12).
4. hydraulic control reduction valve according to claim 1 and 2, it is characterized in that, described valve rod (17) second ends are provided with the pad (14) that is connected on the described control piston (12), and described outer spring (16) and described inner spring (15) are pressed on the described pad (14).
5. hydraulic control reduction valve according to claim 4, it is characterized in that, the second end end of described valve rod (17) is provided with stop lug and the card (13) that is connected on the described stop lug, described card (13) is embedded in described control piston (12), and described pad (14) is pressed on the described card (13).
6. hydraulic control reduction valve according to claim 1 and 2, it is characterized in that, be between described valve pocket (18) and described control port joint (11) and the described valve piece (10) and be spirally connected, and be provided with sealing configuration between described valve pocket (18) and described control port joint (11) and the described valve piece (10).
7. hydraulic control reduction valve according to claim 1 is characterized in that, described the first aperture (171) is axial aperture, and described second orifice (172) is radial hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220349170 CN202673814U (en) | 2012-07-18 | 2012-07-18 | Hydraulic-control pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220349170 CN202673814U (en) | 2012-07-18 | 2012-07-18 | Hydraulic-control pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673814U true CN202673814U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220349170 Expired - Fee Related CN202673814U (en) | 2012-07-18 | 2012-07-18 | Hydraulic-control pressure reducing valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN202673814U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644338A (en) * | 2013-12-11 | 2014-03-19 | 常德中联重科液压有限公司 | Pressure regulating valve and balance valve assembly with pressure regulating valve |
| CN103952838A (en) * | 2014-05-04 | 2014-07-30 | 芜湖恒一塑料设备制造有限公司 | Pressing wheel component for circular weaving machine |
| CN105805072A (en) * | 2016-05-17 | 2016-07-27 | 山东栋梁科技设备有限公司 | Multifunctional overflow valve for teaching and practical training and operation method |
| CN106907367A (en) * | 2017-04-17 | 2017-06-30 | 西华大学 | New Structure Speed Control Valve |
| CN107044461B (en) * | 2017-04-17 | 2019-02-12 | 宁波江北宇洲液压设备厂 | A kind of inverse-proportion pressure reducing valve of hydraulic coupling control |
-
2012
- 2012-07-18 CN CN 201220349170 patent/CN202673814U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644338A (en) * | 2013-12-11 | 2014-03-19 | 常德中联重科液压有限公司 | Pressure regulating valve and balance valve assembly with pressure regulating valve |
| CN103644338B (en) * | 2013-12-11 | 2015-11-25 | 常德中联重科液压有限公司 | Pressure regulator valve and there is the equilibrium valve assembly of this pressure regulator valve |
| CN103952838A (en) * | 2014-05-04 | 2014-07-30 | 芜湖恒一塑料设备制造有限公司 | Pressing wheel component for circular weaving machine |
| CN105805072A (en) * | 2016-05-17 | 2016-07-27 | 山东栋梁科技设备有限公司 | Multifunctional overflow valve for teaching and practical training and operation method |
| CN106907367A (en) * | 2017-04-17 | 2017-06-30 | 西华大学 | New Structure Speed Control Valve |
| CN107044461B (en) * | 2017-04-17 | 2019-02-12 | 宁波江北宇洲液压设备厂 | A kind of inverse-proportion pressure reducing valve of hydraulic coupling control |
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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 |
Granted publication date: 20130116 Termination date: 20180718 |
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| CF01 | Termination of patent right due to non-payment of annual fee |