CN201144914Y - Pilot type pressure reducing valve - Google Patents

Pilot type pressure reducing valve Download PDF

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Publication number
CN201144914Y
CN201144914Y CN 200720077867 CN200720077867U CN201144914Y CN 201144914 Y CN201144914 Y CN 201144914Y CN 200720077867 CN200720077867 CN 200720077867 CN 200720077867 U CN200720077867 U CN 200720077867U CN 201144914 Y CN201144914 Y CN 201144914Y
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CN
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valve
main
spring
pressure
main valve
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CN 200720077867
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Chinese (zh)
Inventor
朱剑根
沈至伟
袁才富
谷文平
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上海立新液压有限公司
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Abstract

The utility model discloses a pilot pressure reducing valve, relates to the hydraulic control valve field and comprises a main valve body and a guide valve body arranged on the top of the main valve body, wherein the main valve body comprises a main valve seat, a main valve sleeve a valve cartridge, a main valve spring, an oil inlet B, an oil outlet A, a pressure measuring port M and an oil discharging ports Y1; the guide valve body comprises a guide valve seat, an adjusting hand wheel, an adjusting sleeve, a pressure adjusting spring, a non-return valve seat and a plug screw. The valve body is in an open status when in a static state and the oil can flow out of the oil outlet A from the oil inlet B freely through the main valve sleeve and the main valve cartridge. The pilot pressure reducing valve has the advantages that the pilot pressure reducing valve can obtain higher control pressure, has good pressure adjusting stability and is provided an external control port so as to realize multi-level pressure adjustment.

Description

先导式减压阀 Pilot type valve

技术领域: FIELD:

本实用新型涉及液压控制阀领域,具体是一种先导式减压阀。 The present invention relates to the field of hydraulic control valve, in particular a pilot valve. 背景技术: Background technique:

减压阀的主要用来减少液压系统中某一支路的液压压力,使同一液压系统能有两个以上不同压力的回路。 The main relief valve for reducing a hydraulic pressure in the hydraulic system branches, so that the same hydraulic system can have two or more different pressure circuits. 传统的先导式减压阀,先导阀芯为锥阀结构, 在高压时,容易发生啸叫和压力不稳的现象。 Conventional pilot valve, the pilot spool valve cone structure at high pressures, and pressure instability readily howling phenomenon. 另外,不带外部控制口,不能实现多级压力控制。 Furthermore, without external control port, multi-level pressure control can not be achieved.

实用新型内容: SUMMARY:

本实用新型所要解决的技术问题在于提供一种新型的先导式减压阀。 The utility model technical problem to be solved is to provide a novel pilot valve. 本实用新型为解决技术问题采用的技术方案是: The utility model is a technical solution to solve the technical problem is that:

一种先导式减压阀由主阀体和安装在主阀体顶端的导阀体构成,主阀体包 One kind of valve guide pilot type valve and the main valve mounted on top of the main valve body constitutes the main body package

括主阀座、主阀套、主阀芯、主阀弹簧、进油口B、出油口A、测压口M和泄油 Including the main valve seat, the main valve housing, main valve, the main valve spring, into the B port, the ports A, drain pressure taps and M

口Y1构成;导阀体包括导阀座、调节手轮、调节套、调压弹簧、单向阀座和螺塞构成;所述主阀座中间开有主阀芯孔,在主阀芯孔的中部制有一弯曲槽与底面进油口B相通,下部与底面的出油口A相通;在所述主阀体的底面与出油口A 和进油口B的接口位置均设有密封圈;所述主阀芯孔的内部安装有主阀芯,在主阀芯的外部和主阀芯孔内壁的之间设有主阀套和阀套座圈,用于固定主阀芯; 在所述主阀套、阀套座圈与主阀芯孔内壁上设有密封圈,保持主阀芯孔内不会出现漏油现象;所述主阀芯的内部形成主阀弹簧腔,主阀弹簧腔中放置主阀弹簧,主阀弹簧的底端顶靠在主阀弹簧座上,上端顶靠在导阀体上;在所述主阀弹簧座的中间开有节流孔。 Y1 port configuration; pilot valve includes a pilot valve seat, adjustable hand wheel, the control sleeve, the spring regulator, check valve seat and plug configuration; an intermediate opening of said main valve seat main spool bore, the main spool bore the central groove is formed with a curved bottom surface B oil inlet communicates with the bottom surface of the lower portion of the inlet port a communicates; bottom surface of the main valve body with an inlet port a and port B has a position of an interface ring ; inside the main spool bore of the main spool is mounted, a main valve sleeve and the valve sleeve between the outer race and the inner wall of the main spool bore of the main spool, the main valve element for fixing; in the said main valve housing, the valve sleeve and the main valve seat ring has a ring inner walls, holding the main spool bore without leakage phenomenon occurs; valve element is formed inside the main spring chamber of the main valve, the main valve spring placing the main valve spring chamber, the bottom end of the main valve spring bears against the main valve seat spring, bears against the upper end on the guide body; in the middle of the main valve spring seat orifice opening.

在所述主阀体侧面开有测压孔M,测压孔为阶梯孔,并与出油口A相通,在内径较小的阶梯孔内设有第一阻尼器,测压孔M的外部可以安装测压阀测得主阀体内的压力,也可以通过螺塞和密封圈将测压孔M密封。 Pressure taps M is opened, the pressure taps stepped hole, and communicates with the oil outlet A, the first damper is provided in the bore of a stepped small inner diameter, the pressure taps M in the outer side surface of main valve body valve may be mounted pressure gauge measuring the winner of the valve body, and can also plug the pressure taps M sealing ring.

所述导阀座的中间纵向开有贯穿的导阀孔,导阀孔的两端设置调节手轮和螺塞固定密封,在所述调节手轮中装置有螺钉,和导阀孔相接的位置安装锁紧螺母和隔圈;所述导阀孔的下部开有与测压口M相连的第一导阀孔,与主阀孔相通的第二导阀孔,与泄油口Yl相通的第三导阀孔;在所述导阀座的两侧分别制出两个螺纹连接的外部控制口X、外部泄漏油口Y,外部泄漏油口Y与调压弹簧所在的调压弹簧腔相通,外部控制口X与导阀孔相通;在所述外部泄漏油口Y 和外部控制口X与导阀座接口的位置可分别通过螺塞和密封圈密封(参见图2)。 The intermediate seat longitudinal guide is opened through the pilot valve hole of the pilot valve hole is provided at both ends of adjustment handwheel and the sealing plug is fixed, the adjusting means has a screw handwheel, the pilot valve hole and contact position of the mounting lock nut and the spacer; a lower opening of the pilot valve bore hole and a first pilot valve is connected to pressure taps M, the second pilot valve and the main valve hole bore in communication with the drain port communicating Yl the third pilot valve bore; both sides of the pilot seat are made of an external pilot port X of the two threaded connections, external drain port Y, the regulator spring chamber Y and the external drain port communicating the pressure regulating spring is located , X external control port in communication with the pilot valve bore; Y location of the leak port and an external port control interface X with the pilot seat and plug respectively through the ring seal (see FIG. 2) in the external.

所述导阀孔内设有单向阀座和调节套,和导阀孔之间均用密封圈密封,在所述单向阀座内开有单向阀芯孔,呈阶梯孔形式,所述单向阀孔内由左至右设置有阀座,第一钢球和第二阻尼器,阀座与单向阀芯孔内壁通过密封圈固定, 中心开有一小的贯穿孔,第二阻尼器设置在单向阀芯孔的中间,在所述第二阻尼器和阀座间放置第一钢球,钢球和贯穿孔接触面相吻合。 The pilot valve hole are provided with a ring seal between the check valve seat and the control sleeve, and the pilot valve bore, said check valve seat within the check valve body is opened hole, stepped hole forms, the said check valve is provided with a valve bore from left to right, the first balls and second damper, the one-way valve spool bore through the ring fixed to the inner wall, the center opening has a small through-hole, the second damping the one-way valve element is disposed in the middle hole, a first ball disposed between said second damper and a valve seat, and the through-hole ball contact surfaces coincide.

所述调节套的内部形成调压弹簧腔,调压弹簧腔内设有调压弹簧,调压弹簧的一端顶靠在调压弹簧座上,另一端顶靠在锥阀上,锥阀内设有第二钢球和单向阀座相连接,在所述第二钢球上的一部分嵌入在单向阀芯孔中。 The adjusting sleeve is formed inside the regulator spring chamber, pressure regulator spring chamber is provided with pressure regulating spring, one end of the spring bears against the top of the regulator regulating spring seat, and the other end against the top of the cone valve, the valve cone site a second ball check valve seat and is connected to a portion of the steel ball on the second one-way valve element is fitted in the hole.

本实用新型的工作原理是:在静态位置时,阀体处于开启状态,油液可以自由的从进油口B经主阀套、主阀芯流到出油口A。 The working principle of the present invention is: in the static position, the valve body is in an open state, fluid freely from the inlet port B through the main valve sleeve, the oil port flows to the main spool A. 这时出油口A的压力作用于主阀芯的底侧,同时,压力油经节流孔作用于主阀芯上面的主阀弹簧腔,并且进入导阀体作用在第二钢球上。 In this case the oil pressure is applied to port A of the bottom side of the main valve, while pressure oil through the orifice acts on the main spool spring chamber above the main valve, and into the pilot valve acts on the second ball. 同样,压力经第一阻尼器、阀座、第二阻尼器作用在第二钢球上。 Similarly, the pressure through the first damper, a valve seat, a second damper acts on the second ball. 根据调压弹簧的设定,在第二钢球的前部和主阀弹簧腔内建压,保持主阀芯处于开启位置。 The pressure regulating spring set in the front portion of the second main valve spring and a steel ball built-pressure chamber, to maintain the main spool in the open position. 油液可自由地从进油口B经主阀套、主阀芯 B fluid freely through the main valve housing from the inlet port, the main spool

流到出油口A,直至出油口A的压力超过调压弹簧的设定值,并打开第二钢球, 主阀芯移至关闭位置。 It flows out of port A, port A until the oil pressure exceeds a set value adjusting spring, and open the second ball, the main valve element to the closed position. 当出油口A的压力与调压弹簧设定压力之间达到平衡时, 得到预定的减压压力。 When equilibrium is reached between the pressure regulator and the inlet port A of the spring set pressure, under reduced pressure to give a predetermined pressure. 控制油可从调压弹簧腔经主阀体底部的Y1 口或导阀体的Y口,返回油箱。 The control oil from the port or port Y guide Y1 via the main valve regulating spring chamber at the bottom of the valve body, returned to the tank. 如拆去螺塞,M 口可作为测压口与压力表相连,对出油口A的减压压力进行监测。 Remove the plug such as, M port as connected to the pressure gauge and pressure measurement port, the pressure of the pressure port A is monitored.

本实用新型的有益效果是先导式减压阀可获得较高的控制压力,调压稳定性好,带外部控制口,可实现多级调压。 The beneficial effects of the present invention is to obtain higher pilot type pressure control pressure, pressure stability, with external control port, can be multi-stage voltage regulator.

附图说明: BRIEF DESCRIPTION OF:

图1是本实用新型的结构示意图; 图2是本实用新型AA面剖视图; 图3是本实用新型左视图; 图中: FIG. 1 is a structural diagram of the present invention novel; FIG. 2 is a sectional view AA of the present invention the surface; FIG. 3 is a left side view of the present invention; FIG:

l一主阀体;2 —导阀体;22 —调节手轮;23 —螺钉;24 —锁紧螺母; 25 —隔圈;3 —主阀座;31 —主阀套;32 —阀套底座;33 —主阀芯孔; 34 —主阀芯;35 —弯曲槽;36 —第一阻尼器;4一主阀弹簧; 41一主阀弹簧腔;42 —主阀弹簧座;43 —节流孔;5 —导阀座; a main valve body l; 2 - valve guide; 22 - adjustment handwheel; 23 - Screw; 24-- lock nut; 25 - spacer; 3 - the main valve seat; 31 - a main valve housing; 32-- valve seat sleeve ; 33 - main spool bore; 34 - main spool; 35 - curved groove; 36 - a first damper; a main valve spring 4; 41 a main valve spring chamber; 42-- main valve spring seat; 43 - throttling aperture; 5 - pilot seat;

6 —调压弹簧;61—调压弹簧腔;62 —压力弹簧座;63 —锥阀; 6 - regulating spring; 61- pressure control spring chamber; 62-- compression spring seat; 63 - cone valve;

7 —单向阀座;71—单向阀芯孔;72 —第二阻尼器;73—阀座;74—穿孔;75 —第一钢球;76 —第二钢球;8 —调节套;9一螺塞;IO —密封圈。 7-- check valve seat; 71- way spool bore; 72-- a second damper; 73- seat; 74- perforation; 75 - a first ball; 76-- a second ball; 8 - the control sleeve; 9 a plug; IO - seals.

具体实施方式: detailed description:

以下结合附图及具体实施例对本实用新型做进一步介绍: 参见图1, The following specific embodiments in conjunction with the accompanying drawings and description of the present invention further made: Referring to Figure 1,

实施例一: 一种先导式减压阀包括主阀体1和导阀体2,导阀体2嵌入在主阀体1的顶端,主阀体1内由主阀座3、主阀套31、主阀芯34、主阀弹簧4、 进油口B、出油口A、测压口M和泄油口Yl构成,主阀座3的中间开有主阀芯孔33,在主阀芯孔33的中部制有一弯曲槽35与底面进油口B相通,下部与底面的出油口A相通,在主阀体1的底面出油口A和进油口B的接口位置均设有密封圈10。 Example a: one kind of pilot type pressure regulator valve 1 comprises a main body 2 and the guide, the guide body 2 is embedded in the top of the main body 1, a main valve body 3 from the main valve seat, the main valve sleeve 31 , main valve 34, main valve spring 4, an oil inlet B, the ports a, pressure taps and a drain port M Yl structure, the middle of the main valve seat 3 has a main valve hole 33 opened, the main valve element the central drilling 33 has a curved groove 35 and the bottom surface of the inlet port B communicates with the lower portion of the bottom surface of the inlet port a communicates at the bottom surface of the main body 1 of the oil inlet port a and port B position has a sealing interface circle 10.

在主阀芯孔33的内部安装主阀芯34,主阀芯34的外部和主阀芯孔33内壁的之间装上主阀套31和阀套座圈32,用于固定主阀芯34,主阀套31、阀套座圈32与主阀芯孔33内壁上通过密封圈10密封,保证主阀芯孔33内不会出现漏油现象。 Primary spool installed inside the main spool bore 33 and 34, mounted on the sleeve 31 and the main valve seat 32 of the valve sleeve 33 between an inner wall of the main valve and the main valve body outer holes 34, 34 for fixing the main valve element , the main valve sleeve 31, the sealing ring 10, to ensure that the inner wall of the valve seat sleeve 32 and the main spool bore 33 of the main spool bore 33 without leakage phenomenon occurs.

在主阀芯34的内部形成主阀弹簧腔41,主阀弹簧腔41中放置主阀弹簧4, 主阀弹簧4的底端顶靠在主阀弹簧座42上,上端顶靠在导阀体2上,主阀弹簧座42的中间开有节流孔43。 Main valve chamber is formed inside the main spring 34 of the valve body 41, the main valve disposed in the spring chamber main valve spring 414, the bottom end of the main valve spring 4 abuts against the main valve seat on the spring 42, the upper end of the valve body abuts against the guide 2, the main valve 42 of the intermediate spring seat orifice opening 43.

在主阀体1侧面开有测压孔M,测压孔M为阶梯孔,与出油口A相通,在内径较小的阶梯孔内设置第一阻尼器36,这时测压孔M的外部可以安装测压阀用于测得主阀体l内的压力,也可以通过螺塞9和密封圈IO将测压孔M密封。 In the opened side of the main body 1 of the pressure taps M, M is a pressure taps stepped hole, communicating with the port A, the inner diameter of the stepped bore in the smaller of the first damper 36 is provided, when the pressure taps M external pressure may be mounted within the load sensing valve for the winner of the body l, and 9 can also plug the pressure taps M IO ring seal.

参见图2、图3,导阀体2由导阀座5、调节手轮22、调节套8、调压弹簧6、单向阀座7和螺塞9构成,导阀座5的中间纵向开有贯穿的导阀孔51,导阀孔51的两端设置调节手轮22和螺塞9固定密封。 Referring to FIG. 2, FIG. 3, guided by the guide seat 5 of the valve body 2, adjustment hand wheel 22, the control sleeve 8, the spring pressure regulator 6, 7 and the check valve seat configuration plug 9, the pilot seat of the intermediate longitudinal opening 5 a through hole 51 of the pilot valve, the pilot valve hole 51 ends adjustment hand wheel 22 is provided and fixed sealing plugs 9.

在调节手轮22中装置有螺钉23,和导阀孔51相接位置的锁紧螺母24和隔圈25共同密封和调节调压弹簧6的压力,导阀孔51的下部开有与测压口M相连的第一导阀孔52,与主阀芯孔33相通的第二导阀孔53,与泄油口Y1相通的第三导阀孔54,在导阀体2的两侧面,分别制出两个螺纹连接孔, 一个与调压弹簧6所在调压弹簧腔61相通,作为可供选择的外部泄漏油口Y,此口与主阀体1底面的泄油口Yl相通;另一个与导阀座5上导阀孔51相通,作为外部控制口X。 25 and the common seal adjustable regulator spring pressure adjusting apparatus 6 in the hand wheel 22, 23, 51 and a contact position of the pilot valve hole 24 of the screw lock nut and the spacer, a lower portion of the valve guide hole 51 is opened and the load a second pilot valve 33 communicating hole 52, and the main spool bore hole is connected to a first pilot valve port M 53, the pilot valve hole and the third drain port 54 communicating Y1, both side surfaces of the guide body 2, respectively, made two threaded holes, and a pressure regulator spring chamber 6 where the pressure-adjusting spring 61 in communication, as an alternative external drain port Y, this port with the bottom surface of the main body 1 of the drain port communicating Yl; another and pilot valve hole 51 communicating the pilot seat 5, as an external pilot port X. 当不需要使用外部控制口X时,用螺塞9堵住,当不需要使用外部泄漏油口Y时,用螺塞9和密封圈IO堵住。 When not using the external pilot port X, blocked with plugs 9, when the need for external drain port Y, and blocked with a seal plug 9 IO.

在导阀孔51内设有单向阀座7和调节套8,和导阀孔51之间用密封圈10 密封,单向阀座7内开有单向阔芯孔71,呈阶梯孔形式,单向阀芯孔71内由左至右设置阀座73,第一钢球75和第二阻尼器21,阀座73与单向阀芯孔71内壁通过密封圈10固定,中心开有一小的贯穿孔74,第二阻尼器72设置在单向阀芯孔71的中间,第二阻尼器21和阀座73间放置第一钢球75,第一钢球75 和贯穿孔74接触面相吻合。 In the pilot valve hole 51 equipped with a sealing ring 10, the one-way check valve seat opening width of the core hole 7 between check valve seat 7 and control sleeve 8, the pilot valve hole 51 and 71 in the form of a stepped bore , the one-way spool valve hole 71 from left to right set 73, the first ball 75 and the second damper 21, the check valve 73 and the inner wall of the spool bore 71 through the sealing ring 10 is fixed, there is a small central opening the through-hole 74, a second damper 72 provided in the middle way of the spool bore 71, a second damper 73 is placed between the first valve seat 21 and ball 75, ball 75 and the first through-holes 74 match the contact surface .

在调节套8的内部形成调压弹簧腔61,调压弹簧腔61内设有调压弹簧6, 调压弹簧6的一端顶靠在调压弹簧座62上,另一端顶靠在锥阀63上,锥阔63 内设有第二钢球76和单向阀座7相连接,第二钢球76上的一部分嵌入在单向阀座7的单向阀芯孔71中。 Regulator spring chamber 61 is formed inside the control sleeve 8, the pressure regulator spring chamber 61 equipped with pressure regulating spring 6, the top end of the regulating spring 6 against the regulating spring seat 62, and the other end bears against the valve cone 63 , the cone width 63 and 76 are equipped with a second ball check valve seat 7 is connected to the second portion of the steel ball 76 is embedded in the one-way check valve seat 71 of the spool bore 7. 在静态位置时,阀体处于开启状态,油液可以自由的从进油口B经主阀套、主阀芯流到出油口A。 In the static position, the valve body is in an open state, fluid freely from the inlet port B through the main valve sleeve, the oil port flows to the main spool A.

实施例二:如果需要减压阀进行多级压力控制,可通过外部控制口X实现。 Example 2: If need be multistage pressure reducing valve control, may be achieved through the external pilot port X. 将X 口与一个或两个外部调压阀通过开关阀相接,外部调压阀的设定压力低于减压阀通过调压弹簧6设定的压力。 The X port by a pressure regulating valve or two external contact switch valves, external pressure regulating valve is set lower than the pressure relief valve is set by a regulating spring 6. 当开关阀关闭时,X口与外界隔断,调压弹 When the switch valve is closed, X port blocked from the outside, pressure bomb

簧6设定的压力即为减压压力;当开关阀开启时,X 口与某一个外部调压阀相通, 6 is the spring set pressure reduced pressure; when the switch valve is open, X a certain port communicates with an external pressure regulating valve,

外部调压阀设定的压力即为减压压力。 External pressure is the pressure regulating valve set pressure.

以上显示和描述了本实用新型的基本原理和主要特征和本实用新型的优点。 The above description and the basic principles of the present invention and the main features and advantages of the present invention. 本行业的技术人员应该了解,本实用新型不受上述实施例的限制,上述实施例和说明书中描述的只是说明本实用新型的原理,在不脱离本实用新型精神和范围的前提下,本实用新型还会有各种变化和改进,这些变化和改进都落入要求保护的本实用新型范围内。 The industry the art will appreciate, the present invention is not limited to the embodiments described above, the above embodiments described in the specification and Examples are merely illustrative of the principles of the present invention, without departing from the spirit and scope of the present invention, the present invention new there will be various changes and modifications, changes and modifications which fall within the scope of the invention claimed. 本实用新型要求保护范围由所附的权利要求书及其等效物界定。 Scope of the claimed invention by the appended claims and their equivalents.

Claims (5)

  1. 1.一种先导式减压阀,由主阀体和安装在主阀体顶端的导阀体构成,主阀体包括主阀座、主阀套、主阀芯、主阀弹簧、进油口B、出油口A、测压口M和泄油口Y1,导阀体包括导阀座、调节手轮、调节套、调压弹簧、单向阀座和螺塞构成,其特征在于:所述主阀座中间开有主阀芯孔,在主阀芯孔的中部制有一弯曲槽与底面进油口B相通,下部与底面的出油口A相通,所述主阀芯的内部形成主阀弹簧腔,主阀弹簧腔中放置主阀弹簧,主阀弹簧的底端顶靠在主阀弹簧座上,上端顶靠在导阀体上,在所述主阀弹簧座的中间开有节流孔;所述导阀座的中间纵向开有贯穿的导阀孔,导阀孔的两端设置调节手轮和螺塞固定密封,所述导阀座的两侧分别制出两个螺纹连接的外部控制口X、外部泄漏油口Y,外部泄漏油口Y与调压弹簧所在的调压弹簧腔相通,外部控制口X与导阀 A pilot valve, comprises a main valve and pilot valve body is mounted on top of the main valve, the main valve comprising a main valve seat, the main valve housing, main valve, the main valve spring, the oil inlet B, the ports A, pressure taps M and drain port Y1, the guide body includes a guide seat adjustment hand wheel, the control sleeve, the spring regulator, check valve seat and plug configuration, wherein: the the main valve seat intermediate said main valve hole is opened, there is a curved groove bottom surface in communication with the oil inlet port B of the main spool bore made in the middle, and the bottom surface of the lower portion of the communication port a, is formed inside the main main spool the valve spring chamber, the spring chamber in the main valve placement main valve spring, the bottom end of the main valve spring bears against the main valve seat spring, bears against the upper end on the guide body, in the middle of the main valve spring seat section is opened orifice; intermediate the pilot seat of the pilot valve is opened in the longitudinal bore therethrough, the pilot valve hole is provided at both ends of adjustment handwheel and the sealing plug is fixed, on both sides of the guide two threaded connections are made out of a valve seat external control port X, Y external drain port, an external pressure regulator spring chamber drain port Y communicates with the pressure regulating spring is located, the external pilot port X and a pilot valve 孔相通,所述导阀孔内设有单向阀座和调节套,在所述单向阀座内开有单向阀芯孔,呈阶梯孔形式,所述调节套的内部形成调压弹簧腔,调压弹簧腔内设有调压弹簧,调压弹簧的一端顶靠在调压弹簧座上,另一端顶靠在锥阀上,锥阀内设有第二钢球和单向阀座相连接,在所述第二钢球上的一部分嵌入在单向阀芯孔中。 Communication hole, the valve guide bore with check valve seat and the control sleeve, said check valve seat within the check valve body is opened hole, stepped hole forms, the adjusting sleeve is formed inside the pressure regulating spring chamber pressure regulator spring chamber is provided with pressure regulating spring, one end of the spring bears against the top of the regulator regulating spring seat, the other end rests against the valve cone, the valve cone and equipped with a second ball check valve seat is connected to a portion of the steel ball on the second one-way valve element is fitted in the hole.
  2. 2. 根据权利要求1所述的先导式减压阀,其特征在于:所述主阀体的底面与出油口A和进油口B的接口位置设有密封圈。 According to claim 1 of the pilot type valve, wherein: the bottom surface of the main valve and the inlet port A and port B into the position of a seal ring interface.
  3. 3. 根据权利要求1所述的先导式减压阀,其特征在于:所述主阀体侧面开有测压孔M,测压孔为阶梯孔,并与出油口A相通,在内径较小的阶梯孔内设有第一阻尼器,测压孔M的外部可以安装测压阀测得主阀体内的压力,也可以通过螺塞和密封圈将测压孔M密封。 According to claim 1 of the pilot type valve, wherein: said main body M side pressure tap is opened, the pressure taps stepped hole, and communicates with the ports A, than the inner diameter a first small step damper bore, external pressure taps M can be measured winner valve mounted pressure gauge in the valve body and can also plug the pressure taps M sealing ring.
  4. 4. 根据权利要求1所述的先导式减压阀,其特征在于:所述外部泄漏油口Y 和外部控制口X与导阀座接口的位置分别通过螺塞和密封圈密封。 According to claim 1 of the pilot type valve, wherein: said external location of the leak port Y port X and the external control interface and the pilot seat and ring seal plugs respectively.
  5. 5.根据权利要求4所述的先导式减压阀,其特征在于:所述单向阀孔内由左至右设置有阀座,第一钢球和第二阻尼器,阀座与单向阀芯孔内壁通过密封圈固定,中心开有一小的贯穿孔。 5. The pilot type valve according to claim 4, wherein: said bore is provided with a check valve seat from left to right, the first balls and second damper, the one-way valve ring fixed to the spool bore through the inner wall, the center opening has a small through-hole.
CN 200720077867 2007-12-29 2007-12-29 Pilot type pressure reducing valve CN201144914Y (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101672388B (en) 2009-09-28 2010-12-29 常州市汇丰船舶附件制造有限公司 High-pressure pressure-reducing valve set
CN102753838A (en) * 2009-12-18 2012-10-24 诺格伦有限责任公司 Multiple-stage valve system
CN101871543B (en) 2009-04-23 2013-01-09 昆明物理研究所 Parallel time-delay pressure-reducing valve
CN102878133A (en) * 2011-07-12 2013-01-16 上海立新液压有限公司 Constant-pressure control valve
CN103089728A (en) * 2011-11-02 2013-05-08 广西柳工机械股份有限公司 Differential type pilot overflow valve
CN103122881A (en) * 2011-11-18 2013-05-29 广西柳工机械股份有限公司 Pilot reducing valve
CN103122882A (en) * 2011-11-18 2013-05-29 广西柳工机械股份有限公司 Adjustable pilot relief valve
CN103122883A (en) * 2011-11-18 2013-05-29 广西柳工机械股份有限公司 Adjustable pilot reducing valve
CN101893120B (en) 2009-05-18 2014-01-01 昆明物理研究所 Active delay pressure-reducing valve
CN104196794A (en) * 2014-07-31 2014-12-10 红安安达新材料有限责任公司 Pressure reducing valve
CN104343759A (en) * 2013-07-23 2015-02-11 武汉机械股份有限公司 Pressure regulating valve
CN105570503A (en) * 2016-02-17 2016-05-11 江西昌河汽车有限责任公司 Bidirectional valve device of automobile fuel system

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871543B (en) 2009-04-23 2013-01-09 昆明物理研究所 Parallel time-delay pressure-reducing valve
CN101893120B (en) 2009-05-18 2014-01-01 昆明物理研究所 Active delay pressure-reducing valve
CN101672388B (en) 2009-09-28 2010-12-29 常州市汇丰船舶附件制造有限公司 High-pressure pressure-reducing valve set
CN102753838A (en) * 2009-12-18 2012-10-24 诺格伦有限责任公司 Multiple-stage valve system
CN102753838B (en) * 2009-12-18 2016-01-13 诺格伦有限责任公司 Multi-stage valve system
CN102878133A (en) * 2011-07-12 2013-01-16 上海立新液压有限公司 Constant-pressure control valve
CN103089728A (en) * 2011-11-02 2013-05-08 广西柳工机械股份有限公司 Differential type pilot overflow valve
CN103089728B (en) * 2011-11-02 2016-03-16 广西柳工机械股份有限公司 Differential pilot relief valve
CN103122883A (en) * 2011-11-18 2013-05-29 广西柳工机械股份有限公司 Adjustable pilot reducing valve
CN103122882A (en) * 2011-11-18 2013-05-29 广西柳工机械股份有限公司 Adjustable pilot relief valve
CN103122883B (en) * 2011-11-18 2015-09-02 广西柳工机械股份有限公司 Adjustable PILOT REGULATOR
CN103122881A (en) * 2011-11-18 2013-05-29 广西柳工机械股份有限公司 Pilot reducing valve
CN103122881B (en) * 2011-11-18 2016-01-27 广西柳工机械股份有限公司 PILOT REGULATOR
CN103122882B (en) * 2011-11-18 2016-03-09 广西柳工机械股份有限公司 Adjustable pilot relief valve
CN104343759A (en) * 2013-07-23 2015-02-11 武汉机械股份有限公司 Pressure regulating valve
CN104343759B (en) * 2013-07-23 2016-02-24 武汉机械股份有限公司 Regulator valve
CN104196794A (en) * 2014-07-31 2014-12-10 红安安达新材料有限责任公司 Pressure reducing valve
CN105570503A (en) * 2016-02-17 2016-05-11 江西昌河汽车有限责任公司 Bidirectional valve device of automobile fuel system

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