CN2557736Y - Three-stage insert assembling valve - Google Patents

Three-stage insert assembling valve Download PDF

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Publication number
CN2557736Y
CN2557736Y CN 02224789 CN02224789U CN2557736Y CN 2557736 Y CN2557736 Y CN 2557736Y CN 02224789 CN02224789 CN 02224789 CN 02224789 U CN02224789 U CN 02224789U CN 2557736 Y CN2557736 Y CN 2557736Y
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CN
China
Prior art keywords
valve
plug
main
way
throttle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 02224789
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Chinese (zh)
Inventor
韩炳涛
杨大祥
权晓惠
郑文达
陈世雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XI AN HEAVY DUTY MACHINERY INS
Original Assignee
XI AN HEAVY DUTY MACHINERY INS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by XI AN HEAVY DUTY MACHINERY INS filed Critical XI AN HEAVY DUTY MACHINERY INS
Priority to CN 02224789 priority Critical patent/CN2557736Y/en
Application granted granted Critical
Publication of CN2557736Y publication Critical patent/CN2557736Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A three-level cartridge valve for high-pressure large-flow liquid intake and discharge control comprises a pilot valve and a main valve core. The utility model is characterized in that a one-level intermediate valve and a middle control valve are connected between the pilot valve and the main valve core. The middle control valve can be composed of a one-way throttle valve, a throttle valve, one-way valves and a throttle plug, with all the components connected with each other; the pilot valve controls the intermediate valve and also controls the main valve core through the one-way throttle valve, the throttle valve and two one-way valves; the throttle plug restricts the flow of the pilot valve. The middle control valve can be connected with a damping mechanism composed of a one-way throttle valve and a pressure reversing valve which are connected with each other; the intermediate valve controls the main valve core through the damping mechanism. The three-level cartridge valve can reduce the hoist time and has a little impact on the system.

Description

A kind of three grades of cartridge valves
Under technical field: the utility model is a kind of industrial cartridge valve, particularly about a kind ofly be used for that high-pressure high-flow advances, three grades of cartridge valves of discharge opeing control.
Background technique: in big-and-middle-sized forging equipment, when the movement velocity height, when needing high-pressure high-flow, with pilot valve directly the big latus rectum plug-in mounting cone valve of control cause that easily system shock or opening and closing time are long.
Summary of the invention: the purpose of this utility model is: a kind of three grades of cartridge valves are provided, and it can reduce opening and closing time, and little to system shock.
The technical solution of the utility model is: design a kind of three grades of cartridge valves, it comprises pilot valve, main valve plug, it is characterized in that: be connected with one-level midstage valves and intermediate controlled valve between pilot valve and main valve plug.
Described intermediate controlled valve is to be connected and composed by one-way throttle valve, throttle valve, one-way valve, orifice plug.
Described intermediate controlled valve is connected with damping mechanism, and damping mechanism is connected and composed by one-way throttle valve and pressure selector valve.
Characteristics of the present utility model are: increase one-level midstage valves and intermediate controlled valve between the pilot valve of the adjustable quick three grades of cartridge valve hydraulic controls of high pressure and main cartridge valve.And the keying speed of controlling this three step valve by the intermediate controlled valve just can constitute desirable hydraulic control circuit, minimizing impact and opening and closing time.
Below in conjunction with embodiment's accompanying drawing the utility model is described further.
Description of drawings: accompanying drawing 1 is embodiment's 1 structural representation.
Accompanying drawing 2 is embodiment's 2 structural representations.
Among the figure: 1, main valve plug; 2, midstage valves; 3, pilot valve; 4, one-way throttle valve; 5, throttle valve; 6, one-way valve; 7, pressure selector valve; 8, orifice plug.
Specific embodiment: embodiment 1 be adjustable quick three grades of cartridge valves as shown in Figure 1: pilot valve 3 control midstage valves 2 make main valve plug 1 quick closedown or unlatching by one-way throttle valve 4, throttle valve 5, two one-way valve 6 control main valve plugs 1.Regulate throttle valve 5, one-way valve 6 and one-way throttle valve 4 main valve plug 1 is opened or closed reposefully, orifice plug 8 is used as pilot valve 3 current limlitings.When pilot valve 3 outages, hydraulic oil one tunnel from A mouth (connecing pumping source) is through orifice plug 8 control flow rate and pilot valve 3, and the control chamber that enters midstage valves 2 makes it to close, and another road is through one-way valve 6, throttle valve 5, through one-way throttle valve 4, enter the control chamber of main valve plug 1 again.Simultaneously the B mouth of main valve plug 1 oil of drawing also enters the control chamber of main valve plug 1 through one-way valve 6, so main valve plug 1 is with regard to quick closedown.When pilot valve 3 energisings, at first midstage valves 2 is opened fast, because throttle valve 5 and two of one-way throttle valve 4 different opening amounts are arranged, cause the control chamber pressure of main valve plug 1 to reduce, main valve is opened fast, the opening amount of regulating throttle valve 5 and one-way throttle valve 4 is poor, with regard to the open and close speed of this valve of may command.
Embodiment 2 band damping releases, discharge opeing are with three grades of cartridge valves, as shown in Figure 2: pilot valve 3 control midstage valves 2, midstage valves 2 are by damped system control main valve plug 1, make main valve plug 1 slow earlier after fast unlatching, release does not steadily have impact.Damped system is made up of one-way throttle valve 4 and pressure selector valve 7, and orifice plug 8 is that pilot valve 3 current limlitings are used.Throttle valve 5 these valve system keying speed of control are used.The commutation pressure of regulating one-way throttle valve 4 and pressure selector valve 7 can make main valve plug 1 steady release.
Embodiment 2 increases damping by embodiment 1 and forms, and it can quick closedown, again can earlier slow on request then fast unlatching, be applicable to that steady fast pressure relief of clutch release slave cylinder compressed liquid and fluid discharge use.When pilot valve 3 energisings, the control oil of drawing from the A mouth of main valve plug 1, one tunnel B mouth through orifice plug 8 and pilot valve 3 enters midstage valves 2 and makes midstage valves 2 quick closedowns, this road binders enters the control mouth P1 of pressure selector valve 7 again, because of this pressure port P1 pressure very low, its pressure is lower than spring force, and the P-A mouth of pressure selector valve 7 is communicated with.Another road binders enters main valve plug 1 to control chamber through excess pressure selector valve P-A mouth and one-way throttle valve 4 simultaneously through throttle valve 5, makes main valve plug 1 quick closedown.Along with closing of main valve plug 1, system pressure raises, and when the P1 of pressure selector valve 7 mouth strength during greater than spring force, promotes spool, and the P-A mouth is closed.When pilot valve 3 outages, midstage valves 2 is opened fast, make system's (cylinder) release at a slow speed on the one hand, the control chamber pressure of main valve plug 1 is reduced.Because the opening amount of orifice plug 8 is greater than the opening amount of one-way throttle valve 4, main valve plug 1 can not opened at once.When the orifice plug 8 and the opening amount of one-way throttle valve 4 are adjusted when suitable, the valve port of main valve plug 1 be trace like the Kai Feikai state.Therefore system's release is very slow.Along with the reduction of system pressure, the P1 mouth pressure of pressure controlled valve reduces gradually, when hydraulic coupling during less than spring force, the P-A mouth of valve is communicated with, and is equivalent to one-way throttle valve 4 opening amounts and increases, and the control chamber oil pressure of main valve plug 1 reduces rapidly, main valve plug 1 is opened fast, and this moment, pressure was lower.And the P-A opening of pressure selector valve 7 is to increase unlatching gradually, and the control chamber pressure of main valve plug 1 is disequilibrium gradually.So the spool of main valve plug 1 is fast unlatching the in slow earlier back, make the slow earlier back of pressure of clutch release slave cylinder fast, its release curve is steadily excessive, therefore impacts less.

Claims (3)

1, a kind of three grades of cartridge valves, it comprises pilot valve, main valve plug, it is characterized in that: be connected with one-level midstage valves and intermediate controlled valve between pilot valve and main valve plug.
2, a kind of three grades of cartridge valves according to claim 1, it is characterized in that: described intermediate controlled valve is to be connected and composed by one-way throttle valve, throttle valve, one-way valve, orifice plug.
3, a kind of three grades of cartridge valves according to claim 1, it is characterized in that: described intermediate controlled valve is connected with damping mechanism, and damping mechanism is connected and composed by one-way throttle valve and pressure selector valve.
CN 02224789 2002-04-17 2002-04-17 Three-stage insert assembling valve Expired - Fee Related CN2557736Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02224789 CN2557736Y (en) 2002-04-17 2002-04-17 Three-stage insert assembling valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02224789 CN2557736Y (en) 2002-04-17 2002-04-17 Three-stage insert assembling valve

Publications (1)

Publication Number Publication Date
CN2557736Y true CN2557736Y (en) 2003-06-25

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ID=33702130

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02224789 Expired - Fee Related CN2557736Y (en) 2002-04-17 2002-04-17 Three-stage insert assembling valve

Country Status (1)

Country Link
CN (1) CN2557736Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102889256A (en) * 2011-07-22 2013-01-23 上海航天控制工程研究所 Triple redundancy servo valve, valve pressure debugging method and assembly used for debugging method
CN103047207A (en) * 2012-12-24 2013-04-17 中联重科股份有限公司 Flow dividing and combining valve bank, hydraulic system, load sensitive hydraulic system and engineering machinery
CN112343884A (en) * 2020-11-05 2021-02-09 北京航天发射技术研究所 Two-stage pilot-controlled high-speed large-flow switch valve and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102072213B (en) * 2010-10-22 2013-03-13 山东泰丰液压股份有限公司 Pressure feedback secondary pilot control plugged-in type proportion relief valve system
CN102889256A (en) * 2011-07-22 2013-01-23 上海航天控制工程研究所 Triple redundancy servo valve, valve pressure debugging method and assembly used for debugging method
CN102889256B (en) * 2011-07-22 2017-08-29 上海航天控制工程研究所 The component of the method and adjustment method of triplex redundance servo valve and debugging valve pressure
CN103047207A (en) * 2012-12-24 2013-04-17 中联重科股份有限公司 Flow dividing and combining valve bank, hydraulic system, load sensitive hydraulic system and engineering machinery
CN103047207B (en) * 2012-12-24 2015-04-29 中联重科股份有限公司 Flow dividing and combining valve bank, hydraulic system, load sensitive hydraulic system and engineering machinery
CN112343884A (en) * 2020-11-05 2021-02-09 北京航天发射技术研究所 Two-stage pilot-controlled high-speed large-flow switch valve and method

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20030625

Termination date: 20110417