CN105673602A - Proportional overflow valve - Google Patents
Proportional overflow valve Download PDFInfo
- Publication number
- CN105673602A CN105673602A CN201410681675.7A CN201410681675A CN105673602A CN 105673602 A CN105673602 A CN 105673602A CN 201410681675 A CN201410681675 A CN 201410681675A CN 105673602 A CN105673602 A CN 105673602A
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- Prior art keywords
- runner
- magnet
- pressure control
- control valve
- proportional pressure
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Abstract
The invention provides a proportional overflow valve. The proportional overflow valve comprises a proportional electromagnet and a pilot valve connected with the proportional electromagnet. The proportional electromagnet is internally provided with a hydraulic passage. The pilot valve is internally provided with a runner communicating with the hydraulic passage of the proportional electromagnet. The runner communicates with the outside. The outer end of the runner and the outer end of the hydraulic passage are connected with an oil tank through oil pipes correspondingly. According to the proportional overflow valve, the pilot valve is provided with the runner communicating with the hydraulic passage of the proportional electromagnet, thus oil in the outside oil tank is led in to flow through the hydraulic passage of the proportional electromagnet to take away heat in the hydraulic passage, the phenomenon that the hydraulic passage is damaged due to excess temperature of the proportional electromagnet is prevented, and accordingly the service life is prolonged.
Description
Technical field
The present invention relates to a kind of surplus valve, in particular to a kind of proportional pressure control valve.
Background technology
Proportional pressure control valve is as in hydraulic efficiency system critical elements, by the overflow of valve port, makes the pressure remained constant by Ore-controlling Role and loop, it is achieved pressure stabilization function.
Existing proportional pressure control valve is divided into Direct Action Type and pilot-operated type two kinds usually, wherein Direct Action Type is by electro-magnet set pressure, and the difference force of relief valve spool is balanced by electro-magnet completely, due to the restriction of electro-magnet power output, work can only carry out at low pressures, cannot be applied in high pressing system. The pilot stage spool that pilot overflow valve adopts area less, the power greatly reducing electro-magnet exports requirement, it is possible to be operated in high pressing system. But the ratio electro-magnet of existing precursor overflow valve at full capacity, when namely voltage is the highest, it is easy to burn out, thus is affecting overall duration of service.
Summary of the invention
The present invention proposes a kind of proportional pressure control valve, solves the problem that proportional pressure control valve of the prior art easily burns out.
The technical scheme of the present invention is achieved in that
A kind of proportional pressure control valve, the pilot valve comprising ratio electro-magnet and be connected with this ratio electro-magnet, in described ratio electro-magnet, there is a hydraulic path, a runner being connected with the hydraulic path of ratio electro-magnet it is provided with in described pilot valve, described runner communicates with the external world, and the outer end of described runner and the outer end of described hydraulic path are connected with a fuel tank by oil pipe respectively.
Preferred version is, described runner is L-shaped, and it comprises the horizontal run that the hydraulic path with ratio electro-magnet is connected and the vertical runner being connected with this horizontal run, and the top of described vertical runner communicates with the external world.
Preferred version is, the outer end of described runner and the outer end of described hydraulic path are respectively equipped with a joint, by joint connected pipes.
Preferred version is, the diameter of bore of described runner is 4mm.
Preferred version is, described oil pipe is teflon pipe.
Preferred version is, described joint comprises body, sealing-ring and fixing sleeve, one end of described body is connected with runner, the other end tightly fits in oil pipe, one end of described fixing sleeve tightly fits over outside oil pipe, the other end is socketed on body, and described sealing-ring tightly fits on body and between fixing sleeve and oil pipe.
The useful effect of the present invention is:
Proportional pressure control valve in the present invention, the runner being connected with the hydraulic path of ratio electro-magnet by arranging on pilot valve, thus the oil introduced in ambient fuel tank flows through the hydraulic path of ratio electro-magnet, so that the heat in it is taken away, thus prevent its due to ratio electro-magnet temperature too high and damage, it is to increase work-ing life.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the side structure schematic diagram of proportional pressure control valve of the present invention;
Fig. 2 is the sectional view of Fig. 1 center tap and tubing section.
In figure:
100, proportional pressure control valve; 10, ratio electro-magnet; 11, hydraulic path; 13, joint; 15,25, oil pipe; 20, pilot valve; 21, runner; 210, horizontal run; 212, vertical runner; 30, fuel tank; 130, body; 132, sealing-ring; 135, fixing sleeve.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the pilot valve 20 that this proportional pressure control valve 100 comprises ratio electro-magnet 10 and is connected with this ratio electro-magnet 10.
Having a hydraulic path 11 in described ratio electro-magnet 10, this hydraulic path 11 extends along the longitudinal direction of ratio electro-magnet 10, and is connected with a joint 13 in its outer end. Described joint 13 is for being connected with a fuel tank 30 by an oil pipe 15.
A runner 21 it is provided with in described pilot valve 20. Described runner 21 is L-shaped, and it comprises a horizontal run 210 being connected with the hydraulic path 11 of ratio electro-magnet 10 and vertical runner 212 connected vertically with this horizontal run 210. Described horizontal run 210 is extended in pilot valve 20 by the position of the corresponding hydraulic path 11 in the front end of pilot valve 20, and is connected with the hydraulic path 11 of ratio electro-magnet 10. Described vertical runner 212 is extended upwardly to by the inner of horizontal run 210 and communicates with the external world. The outer end of described vertical runner 212 is connected with a joint 13. Described joint 13 is connected with fuel tank 30 by an oil pipe 25. Runner 21 diameter of bore of described pilot valve 20 is 4mm, both can ensure its amount flowing through hydraulic efficiency oil, the performance that can avoid again producing interference with other parts in pilot valve 20 and affect other parts.
Described oil pipe 15,25 is teflon pipe. Please refer to Fig. 2, described joint 13 comprises body 130, sealing-ring 132 and fixing sleeve 135. One end of described body 130 is connected with runner, and the other end tightly fits in oil pipe 15,25. One end of described fixing sleeve 135 tightly fits over outside oil pipe 15,25, and the other end is socketed on body 130. Sealing-ring 132 tightly fits on body 130 and between fixing sleeve 135 and oil pipe 15,25. The structure of described joint 13, can strengthen the stability being connected between oil pipe 15,25, and convenient disassembly.
When specifically implementing, the shape of the runner 21 in described pilot valve 20 is not limited to the situation of the present embodiment, and it can be L-shaped, it is possible to is other shapes of bending, as long as can ensure to make it be connected with the hydraulic path 11 of ratio electro-magnet 10, and is in communication with the outside. The aperture of described runner 21 is also not limited to the size of the present embodiment, ensureing in it while hydraulic oil flow flux as far as possible, also ensures not have an impact with other parts.
During use, in fuel tank, the hydraulic efficiency oil of 30 is drawn onto in pilot valve 20 by oil pipe 25, and flow along the runner 21 of pilot valve 20, again by the hydraulic path 11 of horizontal run stream 210 to the ratio electro-magnet 10 of runner 21, it is back in fuel tank 30 by oil pipe 15 again after being flowed out by the front end of hydraulic path 11, heat in ratio electro-magnet 10 is taken away by described hydraulic efficiency oil in the process of flowing, thus improve the work-ing life of ratio electro-magnet 10, prevent ratio electro-magnet 10 temperature too high and damage, and then improve the work-ing life of proportional pressure control valve 100 entirety.
The foregoing is only the better embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a proportional pressure control valve, the pilot valve comprising ratio electro-magnet and be connected with this ratio electro-magnet, in described ratio electro-magnet, there is a hydraulic path, it is characterized in that: in described pilot valve, be provided with a runner being connected with the hydraulic path of ratio electro-magnet, described runner communicates with the external world, and the outer end of described runner and the outer end of described hydraulic path are connected with a fuel tank by oil pipe respectively.
2. proportional pressure control valve as claimed in claim 1, it is characterised in that: described runner is L-shaped, and it comprises the horizontal run that the hydraulic path with ratio electro-magnet is connected and the vertical runner being connected with this horizontal run, and the top of described vertical runner communicates with the external world.
3. proportional pressure control valve as claimed in claim 1, it is characterised in that: the outer end of described runner and the outer end of described hydraulic path are respectively equipped with a joint, by joint connected pipes.
4. proportional pressure control valve according to any one of claims 1 to 3, it is characterised in that: the diameter of bore of described runner is 4mm.
5. proportional pressure control valve as claimed in claim 1, it is characterised in that: described oil pipe is teflon pipe.
6. proportional pressure control valve as claimed in claim 5, it is characterized in that: described joint comprises body, sealing-ring and fixing sleeve, one end of described body is connected with runner, the other end tightly fits in oil pipe, one end of described fixing sleeve tightly fits over outside oil pipe, the other end is socketed on body, and described sealing-ring tightly fits on body and between fixing sleeve and oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681675.7A CN105673602B (en) | 2014-11-21 | 2014-11-21 | Proportional pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681675.7A CN105673602B (en) | 2014-11-21 | 2014-11-21 | Proportional pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673602A true CN105673602A (en) | 2016-06-15 |
| CN105673602B CN105673602B (en) | 2018-11-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410681675.7A Active CN105673602B (en) | 2014-11-21 | 2014-11-21 | Proportional pressure control valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN105673602B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3711961A1 (en) * | 1987-04-09 | 1988-10-20 | Rexroth Mannesmann Gmbh | Proportional valve system as well as use of a ball control valve as proportional valve |
| CN1570450A (en) * | 2004-04-27 | 2005-01-26 | 开泰制管(苏州)有限公司 | Pipes coupling equipment |
| CN1588585A (en) * | 2004-07-15 | 2005-03-02 | 浙江大学 | Anti high voltage permanent magnet polarized two-way ratio electromagnet |
| CN101576101A (en) * | 2009-05-27 | 2009-11-11 | 南京航空航天大学 | Super magnetostrictive actuator driving single-stage direct-acting jet pipe servo valve |
| CN201513402U (en) * | 2009-09-29 | 2010-06-23 | 山东泰丰液压设备有限公司 | Pilot-operated type proportional relief valve |
| CN102072213A (en) * | 2010-10-22 | 2011-05-25 | 山东泰丰液压股份有限公司 | Pressure feedback secondary pilot control plugged-in type proportion relief valve system |
| CN102343366A (en) * | 2011-08-11 | 2012-02-08 | 太原重工股份有限公司 | Quick-open hydraulic control loop of main hydraulic cylinder of mandrel pipe mill |
| CN202545395U (en) * | 2012-03-23 | 2012-11-21 | 山东泰丰液压股份有限公司 | Pilot electrohydraulic proportional overflow valve |
| CN202972132U (en) * | 2012-12-10 | 2013-06-05 | 中联重科股份有限公司 | Electro-hydraulic proportional valve and a proportional electromagnet thereof |
| CN204357815U (en) * | 2014-11-21 | 2015-05-27 | 大连华东液压件有限公司 | Proportional pressure control valve |
-
2014
- 2014-11-21 CN CN201410681675.7A patent/CN105673602B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3711961A1 (en) * | 1987-04-09 | 1988-10-20 | Rexroth Mannesmann Gmbh | Proportional valve system as well as use of a ball control valve as proportional valve |
| CN1570450A (en) * | 2004-04-27 | 2005-01-26 | 开泰制管(苏州)有限公司 | Pipes coupling equipment |
| CN1588585A (en) * | 2004-07-15 | 2005-03-02 | 浙江大学 | Anti high voltage permanent magnet polarized two-way ratio electromagnet |
| CN101576101A (en) * | 2009-05-27 | 2009-11-11 | 南京航空航天大学 | Super magnetostrictive actuator driving single-stage direct-acting jet pipe servo valve |
| CN201513402U (en) * | 2009-09-29 | 2010-06-23 | 山东泰丰液压设备有限公司 | Pilot-operated type proportional relief valve |
| CN102072213A (en) * | 2010-10-22 | 2011-05-25 | 山东泰丰液压股份有限公司 | Pressure feedback secondary pilot control plugged-in type proportion relief valve system |
| CN102343366A (en) * | 2011-08-11 | 2012-02-08 | 太原重工股份有限公司 | Quick-open hydraulic control loop of main hydraulic cylinder of mandrel pipe mill |
| CN202545395U (en) * | 2012-03-23 | 2012-11-21 | 山东泰丰液压股份有限公司 | Pilot electrohydraulic proportional overflow valve |
| CN202972132U (en) * | 2012-12-10 | 2013-06-05 | 中联重科股份有限公司 | Electro-hydraulic proportional valve and a proportional electromagnet thereof |
| CN204357815U (en) * | 2014-11-21 | 2015-05-27 | 大连华东液压件有限公司 | Proportional pressure control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105673602B (en) | 2018-11-06 |
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