CN203257776U - Pilot-operated type electric-hydraulic proportional overflow valve based on plug-in mounting structure - Google Patents
Pilot-operated type electric-hydraulic proportional overflow valve based on plug-in mounting structure Download PDFInfo
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- CN203257776U CN203257776U CN 201320229625 CN201320229625U CN203257776U CN 203257776 U CN203257776 U CN 203257776U CN 201320229625 CN201320229625 CN 201320229625 CN 201320229625 U CN201320229625 U CN 201320229625U CN 203257776 U CN203257776 U CN 203257776U
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Abstract
The utility model discloses a pilot-operated type electric-hydraulic proportional overflow valve based on a plug-in mounting structure. The pilot-operated type electric-hydraulic proportional overflow valve based on the plug-in mounting structure comprises a proportional electromagnet, a pilot-operated valve body and a primary valve bush. The pilot-operated valve body is provided with a first containing cavity and a second containing cavity, a threaded hole is formed between the first containing cavity and the second containing cavity in a penetrating mode, and a first damper is arranged in the thread hole in an adaptive mode. A pilot-operated valve sleeve is arranged in the first containing cavity in a sealing mode, a pilot-operated cone valve core is arranged in the pilot-operated valve sleeve in an inserting mode in the axial direction of the pilot-operated valve sleeve, and the pilot-operated cone valve core is connected with the proportional electromagnet through a push rod. The primary valve bush is arranged at the cavity opening of the second containing cavity, a primary valve element is arranged in the primary valve bush, and a spring abutting between the cavity bottom of the second containing cavity and the primary valve element is arranged in the second containing cavity. According to the structural design of the pilot-operated type electric-hydraulic proportional overflow valve based on the plug-in mounting structure, the size and the weight of the proportional overflow valve are reduced, and the fact that the overflow valve is easy to adjust during practical application is ensured, at the same time processing technical requirements of parts are reduced, and the pilot-operated type electric-hydraulic proportional overflow valve based on the plug-in mounting structure has the advantages of being simple in structure, good in manufacturability, small in flowing resistance, large in flow capacity, fast in response, strong in anti-polluting capability and the like.
Description
Technical field
The utility model relates to electro-hydraulic proportional control technology and two-way plug-in mounting technology, refers in particular to a kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure.
Background technique
Existing commercially available domestic and international two-way plug-in valve product, mounting hole meets the ISO7368 standard, but this product technology is on modularization combo, the essential characteristic such as open and integrated, and it has compared obvious advantage with tradition based on the plate type hydraulic control valve that attachment face is connected.Proportional control and cartridge valve technology can combine with Control System of Microcomputer easily, can regulate continuously, pro rata pressure, speed, flow of controlled chamber etc., effectively improve steady state controling precision and the dynamic quality of system, give full play to mechanical, electrical, liquid advantage separately, two-way plug-in valve combines with electro-hydraulic proportional control technology and becomes main flow.
At present, conventional leading type electricity liquid ratio relief valve mainly is to adopt plank frame, need to be designed for separately the main valve body that main valve housing, main valve plug and oil inlet and outlet are installed, and structure is comparatively complicated, and volume and weight is all larger.The damping hole of traditional guide's valve pocket (be used for voltage stabilizing) and valve seat orifice (determining the proportional pressure control valve pressure rating) be guide valve bushing formerly all, and processing is difficulty relatively, and up-to-standard rate is lower, and the damping hole size can not change when application.Install the general coaxial separation both sides of adopting of guide's valve pocket and pilot poppet valve core simultaneously, causes easily the center line of pilot poppet valve core and guide's valve pocket eccentric.In addition, in the existing commercially available prod, comprise the in the world leading product line of leading company of the overwhelming majority, all general and a large amount of designs of adopting the deflection hole in the guide valve blocks, not only improved technological requirement, can affect the stationarity of running of hydraulic power oil and increase valve self pressure loss.
The model utility content
The purpose of this utility model is to provide a kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure, can reduce the volume and weight of proportional pressure control valve, can guarantee that again this valve is easier to adjust at practical application time ratio, reduces the processing technology requirement of each part simultaneously.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure comprises proportion electro-magnet, guide valve blocks and the main valve housing of successively coaxial setting; This guide valve blocks two side ends vertically offers respectively the first cavity volume and the second cavity volume, run through between this first cavity volume and the second cavity volume and be provided with a tapped hole, adaptive first damper that is equiped with in this tapped hole offers the return opening that is connected with described the first cavity volume on the described guide valve blocks; Sealing is equiped with guide's valve pocket in described the first cavity volume, this pilot valve puts and offers vertically the oil pocket that enters that is communicated with described tapped hole, offer the oil back chamber that is connected with described return opening radially, described pilot valve puts along it and axially is fitted be used to controlling the described pilot poppet valve core that oil pocket is connected with oil back chamber or ends that enters, and this pilot poppet valve core is connected with described proportion electro-magnet by push rod; Described main valve housing is installed on the accent of described the second cavity volume, this main valve housing is provided with oiler and oil outlet, in this main valve housing main valve plug is installed, is equiped with spring in this second cavity volume, two free ends of this spring support respectively at the bottom of the chamber of described the second cavity volume and on the main valve plug.
Be fixed with spring guide in described the second cavity volume, described spring correspondence is set on this spring guide, and the end of described the first damper is stretched out described tapped hole and mutually is threaded with described spring guide.
Offer tapped hole on the described pilot poppet valve core, described push rod is installed in this tapped hole by thread fiting mode.
Offer spool chamber in described guide's valve pocket, described pilot poppet valve core is heavy putting in described spool chamber fully.
Be provided with the second damper in the described main valve plug.
Between described guide's valve pocket and guide valve blocks, respectively be provided with seal ring between described main valve housing and described guide valve blocks.
This new technique scheme compared with prior art has obvious advantage and beneficial effect, concrete following points:
One, this case is based on plug-in mounting structure, directly basic module (main valve housing, main valve plug) is inserted in user's valve platform of special design processing, need not to be designed for separately the main valve body that main valve housing and main valve plug are installed, so that the volume and weight of electricity liquid ratio relief valve greatly reduces, have simultaneously simple in structure, good manufacturability, flow resistance is little, the characteristics such as through-current capability is large, and response is fast, and contamination resistance is strong;
Two, this case is built in guide's valve pocket on the guide valve blocks based on the plug-in mounting principle, the endoporus of pilot poppet valve core by the guide's valve pocket mutual plug-in mounting that leads, thus make the easier assurance of quality of fit of pilot poppet valve core and guide's valve pocket; Damping hole and valve seat orifice with the conventional pilot valves cover is separated simultaneously, as one independently damper be placed on the tapped hole of guide valve blocks integrated, not only reduced the front cavity volume of pilot poppet valve core, guaranteed the proportional overflow Operating stability of valve, also improved the dynamic antivibration effect, simplified simultaneously parts machining process, so that this valve different damper of flexible configuration according to requirements when using;
Three, the structural design of guide valve blocks is also brought the dismounting and change of being convenient to guide's valve pocket, during operation after the damper dismounting, just can eject guide's valve pocket to come with a stay bolt screwin, avoid traditional easy deficiency of scuffing valve sleeving inner wall when going out valve pocket with the hook hook;
Four, pilot stage, damping network and main are that coaxial-symmetrical is installed in this case valve arrangement, both guaranteed that guide valve blocks designed without inclined hole, improved technique, give in structural design, technology establishment and the manufacturing of product and all bring great convenience, so that flowing of hydraulic oil is more steady, reduce the pressure loss of valve self;
Five, preferred, the pilot poppet valve core is by push rod and proportion electro-magnet Mechanical Contact, and push rod and pilot poppet valve core are threaded connection, and therefore can adjust the formerly position of starting taper spool interior threaded hole of push rod, and then the initialization of resize ratio electromagnet point, improve the performance characteristic of proportion electro-magnet;
Six, preferred, after spring guide and the first damper are threaded, be fixed on the guide valve blocks, not only guaranteed the stability of spring, also reduced the volume of the spring chamber of main valve plug upper end, the simultaneously setting of spring guide does not increase the weight of main valve plug, has improved the dynamic response performance of proportional pressure control valve.
Description of drawings
Fig. 1 is a generalized section of the present utility model.
Label declaration
Embodiment
Below in conjunction with the drawings and specific embodiments to originally being described in further detail.
This case relates to a kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure, as shown in Figure 1, mainly include proportion electro-magnet 1, guide valve blocks 2 and the main valve housing 8 of successively coaxial setting, also include guide's valve pocket 3, pilot poppet valve core 4, the first damper 5, spring 6 and main valve plug 9.
Guide's valve pocket 3 is installed in the first cavity volume 21, concrete, these guide's valve pocket 3 sections are similar " T " character form structure, the structure of the first cavity volume 21 is complementary with this " T " character form structure, this kind structural design plays strengthens the 3 steadiness effects of guide's valve pocket, and also is beneficial to the installation of pilot poppet valve core 4 and push rod 41.Offer vertically on guide's valve pocket 3 be communicated with tapped hole 23 enter oil pocket 31, offer the oil back chamber 32 that is connected with return opening 24 on radially.
Pilot poppet valve core 4 is inserted on guide's valve pocket 3 vertically, and purpose is to be connected with oil back chamber 32 or to end be used to controlling into oil pocket 31.Pilot poppet valve core 4 is connected with the contact of proportion electro-magnet 1 mechanical kilowatt by push rod 41, controlled by proportion electro-magnet 1 action, exert pressure via 41 pairs of pilot poppet valve cores 4 of push rod, pilot poppet valve core 4 is according to its two ends pressure reduction suitable mobile adjustment vertically, reaches with this and regulates the purpose that oil pocket 31 and oil back chamber 32 are connected or end.
In the work, when proportion electro-magnet 1 does not have electrical signal, the oiler 81 of pressure oil by main valve housing 8 enters the second damper 91 on the main valve plug 9, pressure oil is guided to the spring cavity volume of main valve plug 8 upper ends by the second damper 91, pressure oil enters guide's valve pocket 3 by the first damper 5 of guide valve blocks 2 installations and by entering oil pocket 31 afterwards, act on the pilot poppet valve core 4 by guide's valve pocket 3, this moment, proportion electro-magnet 1 did not have ouput force, pressure oil promotes pilot poppet valve core 4 and opens, pressure oil is by the cavity volume between pilot poppet valve core 4 and the guide's valve pocket 3, finally enter return opening 24 via oil back chamber 32, system can not build-up pressure.
During given proportion electro-magnet 1 certain electrical signal, proportion electro-magnet 1 produces certain thrust and acts on pilot poppet valve core 4 one ends by push rod 41; The hydraulic coupling of generation that acts on pilot poppet valve core 4 the other ends when pressure oil is during less than the thrust of proportion electro-magnet 1, pilot poppet valve core 4 can not be opened, the second damper 91 does not have hydraulic oil to pass through, the pressure in main valve plug two chambeies about in the of 9 is identical, under the effect of the spring force that spring 6 produces, the valve port between main valve plug 9 and the main valve housing 8 is closed (oil outlet 82 is not fuel-displaced); When the hydraulic coupling that acts on the generation of pilot poppet valve core 4 the other ends when pressure oil overcomes the thrust of proportion electro-magnet 1, pilot poppet valve core 4 is opened, pressure oil enters return opening 24 by the cavity volume between pilot poppet valve core 4 and the guide's valve pocket 3, the pressure of the cavity of resorption of main valve plug 9 is greater than upper cavity pressure, when the hydraulic coupling that is produced by pressure reduction overcomes the spring force that spring 6 produces, valve port between main valve plug 9 and the main valve housing 8 is opened (oil outlet 82 is fuel-displaced), realizes that the ratio in the hydraulic circuit is regulated pressure.
Pilot poppet valve core 4 is inserted on guide's valve pocket 3, the position relationship of the two has multiple situation, preferably, pilot poppet valve core 4 is inserted in guide's valve pocket 3 fully, be to offer spool chamber 33 in guide's valve pocket 3, pilot poppet valve core 4 is heavy putting in spool chamber 33 fully, with this easier assurance of axial quality of fit that makes pilot poppet valve core 4 and guide's valve pocket 3, avoids the center line of the two eccentricity issues to occur.
Preferential, offer tapped hole on the pilot poppet valve core 4, push rod 41 is installed in this tapped hole by thread fiting mode, can adjust the formerly position of starting taper spool 4 interior threaded holes of push rod 41 with this, during the priming stroke of the rank bar of resize ratio electromagnet 1, and then the priming stroke of resize ratio electromagnet 1, improved the performance characteristic of proportion electro-magnet 1.
Preferably, also be fixed with spring guide 7 in the second cavity volume 21, spring 6 correspondences are set on the spring guide 7, and the end of the first damper 5 is stretched out tapped hole 23 and mutually is threaded with spring guide 7.The setting of spring guide 7 has not only guaranteed the stability of spring 6, has also reduced the volume of the spring chamber of main valve plug 9 upper ends, and the simultaneously setting of spring guide 7 does not increase the weight of main valve plug 9, has improved the dynamic response performance of proportional pressure control valve.
Have, 2 of described guide's valve pocket 3 and guide valve blocks, guide's valve pocket 3 and 1 of proportion electro-magnet, main valve housing 8 and 2 of guide valve blocks preferably respectively are provided with seal ring 34,35,83, to strengthen whole relief valve overall sealing performance again.
This case electricity liquid ratio relief valve can pass through to change the second damper 91 on the main valve plug 9, and the first damper 5 on the guide valve blocks 2, and then forms the damping network of different liquid resistance configurations, to obtain different control characteristics.Also can be by changing the screw-in length of the interior threaded hole of the first damper 5 on guide valve blocks 2, by ante-chamber (tapped hole 23 is near the chamber of pilot poppet valve core 4 one ends) the volume size of adjusting pilot poppet valve core 4, and then stability and the dynamic characteristic of change electricity liquid ratio relief valve.
The above only is this novel preferred embodiment, and all equalizations of doing with this novel claim scope change and modify, and all should belong to the scope of this novel claim.
Claims (6)
1. the leading type electricity liquid ratio relief valve based on plug-in mounting structure is characterized in that: the proportion electro-magnet, guide valve blocks and the main valve housing that comprise successively coaxial setting; This guide valve blocks two side ends vertically offers respectively the first cavity volume and the second cavity volume, run through between this first cavity volume and the second cavity volume and be provided with a tapped hole, adaptive first damper that is equiped with in this tapped hole offers the return opening that is connected with described the first cavity volume on the described guide valve blocks; Sealing is equiped with guide's valve pocket in described the first cavity volume, this pilot valve puts and offers vertically the oil pocket that enters that is communicated with described tapped hole, offer the oil back chamber that is connected with described return opening radially, described pilot valve puts along it and axially is fitted be used to controlling the described pilot poppet valve core that oil pocket is connected with oil back chamber or ends that enters, and this pilot poppet valve core is connected with described proportion electro-magnet by push rod; Described main valve housing is installed on the accent of described the second cavity volume, this main valve housing is provided with oiler and oil outlet, in this main valve housing main valve plug is installed, is equiped with spring in this second cavity volume, two free ends of this spring support respectively at the bottom of the chamber of described the second cavity volume and on the main valve plug.
2. a kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure as claimed in claim 1, it is characterized in that: be fixed with spring guide in described the second cavity volume, described spring correspondence is set on this spring guide, and the end of described the first damper is stretched out described tapped hole and mutually is threaded with described spring guide.
3. a kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure as claimed in claim 1, it is characterized in that: offer tapped hole on the described pilot poppet valve core, described push rod is installed in this tapped hole by thread fiting mode.
4. a kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure as claimed in claim 1 is characterized in that: offer spool chamber in described guide's valve pocket, described pilot poppet valve core is heavy putting in described spool chamber fully.
5. a kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure as claimed in claim 1 is characterized in that: be provided with the second damper in the described main valve plug.
6. a kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure as claimed in claim 1 is characterized in that: between described guide's valve pocket and guide valve blocks, respectively be provided with seal ring between described main valve housing and described guide valve blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229625 CN203257776U (en) | 2013-04-28 | 2013-04-28 | Pilot-operated type electric-hydraulic proportional overflow valve based on plug-in mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229625 CN203257776U (en) | 2013-04-28 | 2013-04-28 | Pilot-operated type electric-hydraulic proportional overflow valve based on plug-in mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257776U true CN203257776U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320229625 Withdrawn - After Issue CN203257776U (en) | 2013-04-28 | 2013-04-28 | Pilot-operated type electric-hydraulic proportional overflow valve based on plug-in mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257776U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233936A (en) * | 2013-04-28 | 2013-08-07 | 华侨大学 | Insertion-structure-based pilot-operated electric-hydraulic proportional spill valve |
| CN105090600A (en) * | 2015-09-11 | 2015-11-25 | 福州大学 | Novel electric-hydraulic proportional overflow valve |
| CN112096682A (en) * | 2020-09-30 | 2020-12-18 | 潍柴动力股份有限公司 | Pilot-operated type electric proportional high-pressure overflow valve |
| CN114810533A (en) * | 2022-03-30 | 2022-07-29 | 杭州力龙液压有限公司 | Control valve group, tool, hydraulic pump, control valve group assembling method and engineering machinery |
-
2013
- 2013-04-28 CN CN 201320229625 patent/CN203257776U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233936A (en) * | 2013-04-28 | 2013-08-07 | 华侨大学 | Insertion-structure-based pilot-operated electric-hydraulic proportional spill valve |
| CN103233936B (en) * | 2013-04-28 | 2016-01-20 | 华侨大学 | A kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure |
| CN105090600A (en) * | 2015-09-11 | 2015-11-25 | 福州大学 | Novel electric-hydraulic proportional overflow valve |
| CN105090600B (en) * | 2015-09-11 | 2017-10-20 | 福州大学 | A kind of electricity liquid ratio relief valve |
| CN112096682A (en) * | 2020-09-30 | 2020-12-18 | 潍柴动力股份有限公司 | Pilot-operated type electric proportional high-pressure overflow valve |
| CN112096682B (en) * | 2020-09-30 | 2021-11-19 | 潍柴动力股份有限公司 | Pilot-operated type electric proportional high-pressure overflow valve |
| CN114810533A (en) * | 2022-03-30 | 2022-07-29 | 杭州力龙液压有限公司 | Control valve group, tool, hydraulic pump, control valve group assembling method and engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131030 Effective date of abandoning: 20160120 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |