CN101886643B - Control valve special for hydraulic lifting of plunger cylinder - Google Patents
Control valve special for hydraulic lifting of plunger cylinder Download PDFInfo
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- CN101886643B CN101886643B CN201010237555XA CN201010237555A CN101886643B CN 101886643 B CN101886643 B CN 101886643B CN 201010237555X A CN201010237555X A CN 201010237555XA CN 201010237555 A CN201010237555 A CN 201010237555A CN 101886643 B CN101886643 B CN 101886643B
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- valve
- way valve
- hydraulic lifting
- plunger cylinder
- control valve
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Abstract
The invention relates to the technical field of fluid transmission, in particular to a control valve special for hydraulic lifting of a plunger cylinder and belongs to control valves. The control valve comprises a one-way valve A, a one-way valve B and an electromagnet, wherein checking sides of the one-way valve A and the one-way valve B are connected to form an oil outlet C of a hydraulic lifting valve; an inlet of the one-way valve A serves as an oil inlet E of the hydraulic lifting valve; a valve core in the one-way valve B is propped against an ejector rod of the electromagnet; and the inlet of the one-way valve B serves as an oil return port D of the hydraulic lifting valve. The invention aims to design the control valve special for the hydraulic lifting of the plunger cylinder, which can finish pressure adjustment of oil-taking of the plunger cylinder, realize pressure maintenance after boosting of the plunger cylinder and realize pressure relief and pressure reduction of the plunger cylinder after the pressure maintenance. Compared with the prior art, the control valve has the advantages of integral structural design, convenient installation and use and the capability of saving the installation space of a control system, bringing great convenience to the manufacturing and the maintenance of the control system and the like.
Description
Technical field
The present invention relates to technical field of fluid transmission, belong to the control valve class, particularly a kind of control valve special for hydraulic lifting of plunger cylinder.
Background technique
Along with the raising plunger case of industrialized level applies to every field widely; The mechanism hand of the hydraulic press that pushes up down like some, hydraulic lift, engineering machinery, lifting apparatus etc.; The hydraulic system of controlling its rising and decline is also rich and varied, but no matter how control system often needs several ripe hydrovalves to form.
The typical control system of existing control plunger case lifting is as shown in Figure 1, and it mainly is made up of selector valve, pressure retaining valve, relief valve, Pilot operated check valve and valve body integrated package.This system adopt common Pilot operated check valve and independently one-way valve realize the up-down and the pressurize of plunger case.Therefore the control oil channel and the cracking pressure that need to increase Pilot operated check valve are regulated oil circuit.And the control oil channel that will make Pilot operated check valve is separated with master cylinder oil-feed oil circuit and has therefore independently been increased solenoid directional control valve again.A hydraulic system like this, hydrovalve is more, and installation needs the space big, also need manufacture and design special-purpose valve body integrated package, gives and makes, uses and safeguard and all caused certain inconvenience.
Summary of the invention
The objective of the invention is to design a kind of pressure that can accomplish the plunger case oil-feed and regulate, also can after plunger case boosts, realize pressurize, and can after pressurize finishes, realize the pressure release of plunger case and the control valve special for hydraulic lifting of plunger cylinder of decline.
In order to achieve the above object; The present invention adopts following technical solution: a kind of control valve special for hydraulic lifting of plunger cylinder, it is characterized in that it comprises one-way valve A, one-way valve B and electromagnet, and the non-return side of said one-way valve A and one-way valve B is connected; Become the oil outlet C of hydraulic lifting valve; The inlet of said one-way valve A is the filler opening E of hydraulic lifting valve, and the spool among the said one-way valve B withstands on the push rod of said electromagnet, and the inlet of said one-way valve B is the return opening D of hydraulic lifting valve.
In said one-way valve B, also be provided with relief arrangement; Said relief arrangement comprises off-load spool and off-load Returnning spring; Said off-load spool one end withstands on the off-load Returnning spring after passing the flange among the said one-way valve B, and the spool that the other end passes among the said one-way valve B withstands on the push rod of said electromagnet.
Be provided with seal arrangement between said off-load spool and the flange, the place is provided with the cone seal body with the corresponding off-load spool of spool unloading hole, and simultaneously, the left and right lifting surface area of said off-load spool in valve pocket equates.
The inlet of said one-way valve A also is connected with the pressure tappings of relief valve, and the relief hole of relief valve is connected with hydraulic lifting valve return opening D.
Said one-way valve A, one-way valve B, relief arrangement, electromagnet and relief valve combine on the valve body.
During use, hydraulic lifting valve oil outlet communicates with the plunger case filler opening, and the filler opening of hydraulic lifting valve communicates with the high pressure oil pump oil outlet, and the return opening of hydraulic lifting valve connects return line.
During rising, high pressure oil pump is given the filler opening oil supply, and high pressure oil gets into plunger case from hydraulic lifting valve oil outlet after through the overflow pressure regulating valve, and boosting is then keep-uped pressure by two one-way valve A, B.When needing to descend, make the electromagnet energising, electromagnetic push backs down one-way valve B through push rod.Hydraulic oil is got back to fuel tank through the one-way valve B that backs down in the plunger case, and plunger case descends.
The present technique scheme is used to control the up-down of plunger case; When saving cost and installing space; The performance and the sensitivity of control are not affected, and adopt integrated design not need independent manifold block, give to make and safeguard all to bring great convenience.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is the typical control system of existing control plunger case lifting.
Fig. 2 is the structural representation of present embodiment.
Fig. 3 is the control system figure that present embodiment is used to control plunger case.
Embodiment
Like Fig. 2, shown in Figure 3, present embodiment comprises one-way valve A, one-way valve B, relief arrangement, electromagnet 11, relief valve 12 and valve body 7, and said one-way valve A, one-way valve B, relief arrangement, electromagnet 11 and relief valve 12 combine on the valve body 7.
The non-return side of said one-way valve A and one-way valve B is connected; Become the oil outlet C of hydraulic lifting valve; The inlet of said one-way valve A is the filler opening E of hydraulic lifting valve; The inlet of said one-way valve B is the return opening D of hydraulic lifting valve, and the inlet of said one-way valve A also is connected with the pressure tappings of relief valve 12, and the relief hole of relief valve 12 is connected with hydraulic lifting valve return opening D.
Said relief arrangement is located on the said one-way valve B; It comprises off-load spool 5 and off-load Returnning spring 2; Said off-load spool 5 one ends withstand on the off-load Returnning spring 2 after passing the flange 4 among the said one-way valve B, and the spool 6 that the other end passes among the said one-way valve B withstands on the push rod 10 of said electromagnet 11, is provided with seal arrangement 3 between said off-load spool 5 and the flange 4; 9 corresponding off-load spool places are provided with cone seal body 8 with the spool unloading hole; Simultaneously, the left and right lifting surface area of said off-load spool 5 in valve pocket equates, makes off-load spool 5 just offset by the left and right active force of high-pressure and hydraulic oil.Therefore, at electromagnet in the raw down, off-load spool 5 is under the effect of off-load Returnning spring 2 pretightening forces, and cone seal body 8 is with 9 sealings of spool unloading hole.Simultaneously,, electromagnet 11 just can open relief arrangement as long as overcoming the pretightening force of off-load Returnning spring 2, and irrelevant with the flow of control valve itself, make the control valve of present embodiment can be applicable to big flow occasion.
Actual demand processing can be pressed in the position of the filler opening E of present embodiment control valve, return opening D, oil outlet C on valve body 7, can be positioned at each side of valve body.Can as shown in Figure 2ly be located at the valve body front side like filler opening E, also can on demand filler opening is opened downside or above.As long as filler opening at the inlet side of a side one-way valve, does not just influence the realization of this control valve function.Other oil outlets, return opening are as the same, do not receive the restriction of this structural representation into and out of the hydraulic fluid port position.
During use, as shown in Figure 3, hydraulic lifting valve oil outlet C communicates with plunger case 13 filler openings, and the filler opening E of hydraulic lifting valve communicates with high pressure oil pump 14 oil outlets, and the return opening D of hydraulic lifting valve connects return line.
When high pressure oil pump 14 is given filler opening E oil supply; High pressure oil also flows into the pressure tappings of relief valve 12 when flowing into one-way valve A inlet; When pressure surpassed relief valve 12 setting values, relief valve 12 was backed down, and hydraulic oil is from the relief hole oil sump tank of relief valve 12; Pressure reduces the back relief valve and resets, thereby realizes the adjusting to oil circuit pressure.After high pressure oil is regulated through relief valve 12 pressure; Act on the one-way valve A; Under the effect of pressure, one-way valve A is opened, and high pressure oil is from the unidirectional inflow plunger case 13 of hydraulic lifting valve oil outlet C; Plunger case 13 rises, and high pressure oil flow to the non-return side of one-way valve B through the through hole in the valve body 71 simultaneously.The back pressure that boosts is participated in pressurize by two one-way valve A, B, and pressure maintaining performance is good, can realize zero leakage.
During decline, electromagnet 11 energisings just can be backed down off-load spool 5 as long as electromagnetic push overcomes the pretightening force of off-load Returnning spring 2, and unloading channel is opened, and the hydraulic oil in the plunger case is through the unloading channel off-load.After the hydraulic oil off-load in the plunger case; One-way valve B non-return side no longer receives the effect of high pressure oil; Spool 5 under the further effect of electromagnetic push among the one-way valve B is further backed down, and the hydraulic oil in the plunger case is got back to fuel tank through the one-way valve B that opens, thereby plunger case is descended.
The hydraulic lifting of, small flow plunger case less for latus rectum, present embodiment control valve can directly adopt control to open relief arrangement, realize the off-load of control valve and the function that unidirectional hydraulic oil refluxes.
In sum, the present invention compared with prior art has the following advantages:
1, function high concentration, easy to install and saving installing space.
2, back down nonreturn valve core again after can directly backing down the off-load spool of oil return side one-way valve by solenoid valve after pressurize finishes, can realize descending after the pressure release and also save the oil circuit and the selector valve of control Pilot operated check valve.
3, simple in structure in light weight, with two one-way valves and the shared valve body of relief valve, many spools are directly combined not to be needed as need the function of each valve be combined to make separately in the past integrated package to be installed again.
Claims (5)
1. control valve special for hydraulic lifting of plunger cylinder; It is characterized in that it comprises one-way valve A, one-way valve B and electromagnet (11); The non-return side of said one-way valve A and one-way valve B is connected, and becomes the oil outlet C of hydraulic lifting control valve, and the inlet of said one-way valve A is the filler opening E of hydraulic lifting control valve; Spool (6) among the said one-way valve B withstands on the push rod (10) of said electromagnet, and the inlet of said one-way valve B is the return opening D of hydraulic lifting control valve.
2. control valve special for hydraulic lifting of plunger cylinder according to claim 1; It is characterized in that in said one-way valve B, also being provided with relief arrangement; Said relief arrangement comprises off-load spool (5) and off-load Returnning spring (2); Said off-load spool (5) one ends withstand on the off-load Returnning spring (2) after passing the flange (4) among the said one-way valve B, and the spool (6) that the other end passes among the said one-way valve B withstands on the push rod (10) of said electromagnet.
3. control valve special for hydraulic lifting of plunger cylinder according to claim 2; It is characterized in that being provided with seal arrangement (3) between said off-load spool (5) and the flange (4); Be provided with cone seal body (8) with the corresponding off-load spool of spool unloading hole (9) place of said one-way valve B; Simultaneously, the left and right lifting surface area of said off-load spool (5) in valve pocket equates.
4. control valve special for hydraulic lifting of plunger cylinder according to claim 3 is characterized in that the inlet of said one-way valve A also is connected with the pressure tappings of relief valve (12), and the relief valve relief hole is connected with hydraulic lifting control valve return opening D.
5. control valve special for hydraulic lifting of plunger cylinder according to claim 4 is characterized in that said one-way valve A, one-way valve B, relief arrangement, electromagnet (11) and relief valve (12) combine on the valve body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010237555XA CN101886643B (en) | 2010-07-23 | 2010-07-23 | Control valve special for hydraulic lifting of plunger cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010237555XA CN101886643B (en) | 2010-07-23 | 2010-07-23 | Control valve special for hydraulic lifting of plunger cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886643A CN101886643A (en) | 2010-11-17 |
| CN101886643B true CN101886643B (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010237555XA Expired - Fee Related CN101886643B (en) | 2010-07-23 | 2010-07-23 | Control valve special for hydraulic lifting of plunger cylinder |
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| CN (1) | CN101886643B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593730B (en) * | 2016-12-08 | 2018-08-07 | 中国北方发动机研究所(天津) | A kind of high-pressure common rail variable pump testing pressure-regulating valve |
| CN108506267B (en) * | 2018-05-02 | 2019-11-26 | 宁波真格液压科技有限公司 | A kind of loop choice valve with decompression function |
| CN114294280B (en) * | 2021-12-26 | 2024-04-09 | 浙江海宏液压科技股份有限公司 | Working valve plate and multi-way valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1198773A1 (en) * | 1984-04-13 | 1985-12-15 | Zaporozh Ind Inst | Electrohydraulic mechanism for moving electrode of electric-arc furnace |
| CN1563726A (en) * | 2004-04-08 | 2005-01-12 | 兰州理工大学 | Hydraulic system for braking lifting platform and unloading when no load |
| CN101294589A (en) * | 2007-12-06 | 2008-10-29 | 烟台奔腾汽车检测维修设备制造有限公司 | Hydraulic pressure center valve for novel elevator synchronous elevation, control and application method thereof |
| CN201696384U (en) * | 2010-07-23 | 2011-01-05 | 吴旭 | Control valve special for hydraulic lifting and descending of plunger cylinder |
-
2010
- 2010-07-23 CN CN201010237555XA patent/CN101886643B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1198773A1 (en) * | 1984-04-13 | 1985-12-15 | Zaporozh Ind Inst | Electrohydraulic mechanism for moving electrode of electric-arc furnace |
| CN1563726A (en) * | 2004-04-08 | 2005-01-12 | 兰州理工大学 | Hydraulic system for braking lifting platform and unloading when no load |
| CN101294589A (en) * | 2007-12-06 | 2008-10-29 | 烟台奔腾汽车检测维修设备制造有限公司 | Hydraulic pressure center valve for novel elevator synchronous elevation, control and application method thereof |
| CN201696384U (en) * | 2010-07-23 | 2011-01-05 | 吴旭 | Control valve special for hydraulic lifting and descending of plunger cylinder |
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| Publication number | Publication date |
|---|---|
| CN101886643A (en) | 2010-11-17 |
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Granted publication date: 20120725 Termination date: 20180723 |