MX169831B - IMPROVEMENTS TO CONTROL REEL VALVE - Google Patents

IMPROVEMENTS TO CONTROL REEL VALVE

Info

Publication number
MX169831B
MX169831B MX20107084A MX20107084A MX169831B MX 169831 B MX169831 B MX 169831B MX 20107084 A MX20107084 A MX 20107084A MX 20107084 A MX20107084 A MX 20107084A MX 169831 B MX169831 B MX 169831B
Authority
MX
Mexico
Prior art keywords
port
chamber
blocked
break
inlet port
Prior art date
Application number
MX20107084A
Other languages
Spanish (es)
Inventor
Michael E Barr
Original Assignee
Deere & Co
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.)
Filing date
Publication date
Application filed by Deere & Co filed Critical Deere & Co
Publication of MX169831B publication Critical patent/MX169831B/en

Links

Landscapes

  • Multiple-Way Valves (AREA)
  • Sliding Valves (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La presente invención se refiere a en combinación con una válvula de control teniendo una caja definiendo una cámara cilíndrica alargada, una lumbrera de entrada intersectando dicha cámara, una lumbrera de tanque intersectando dicha cámara y axialmente removida de dicha lumbrera de entrada de presión, una lumbrera de trabajo intersectando dicha cámara y localizada axialmente entre dicha lumbrera de entrada de presión y dicha lumbrera de tanque, un carrete de válvula deslizablemente montado axialmente dentro de dicha cámara, dicho carrete de válvula teniendo un rebaje axialmente localizado entre el primero y segundo descansos axiales, dicho carrete de válvula siendo deslizablemente colocable de manera que en una primera posición la comunicación de fluido se deriva de dicha lumbrera de entrada de presión alrededor de dicho rebaje a dicha lumbrera de trabajo, la comunicación de fluido a dicha lumbrera de trabajo siendo bloqueada por el primer descanso, en una segunda posición, la comunicación de fluido desde dicha lumbrera de trabajo a dicha lumbrera de entrada es bloqueada por dicho segundo descanso y a dicha lumbrera de tanque es bloqueada por dicho primer descanso y en una tercera posición la comunicación de fluido es derivada entre dicha lumbrera de trabajo y dicha lumbrera de tanque alrededor de dicho rebaje y la comunicación a dicha lumbrera de entrada es bloqueada por dicho segundo descanso en donde la mejora comprende: medios de sellamiento para proporcionar un sello húmedo de alta presión entre dicha lumbrera de trabajo y dicha lumbrera de tanque cuando dicho carrete de válvula está en la segunda posición.The present invention relates to in combination with a control valve having a box defining an elongated cylindrical chamber, an inlet port intersecting said chamber, a tank port intersecting said chamber and axially removed from said pressure inlet port, a port working intersecting said chamber and axially located between said pressure inlet port and said tank port, a slidable valve spool mounted axially within said chamber, said valve spool having a recess axially located between the first and second axial rests, said valve spool being slidably positionable so that in a first position fluid communication is derived from said pressure inlet port around said recess to said work port, fluid communication to said work port being blocked by the first break, in a second pos ition, fluid communication from said work port to said inlet port is blocked by said second break and to said tank port is blocked by said first break and in a third position fluid communication is bypassed between said work port and said tank port around said recess and communication to said inlet port is blocked by said second break where the improvement comprises: sealing means to provide a high pressure wet seal between said working port and said tank port when said valve spool is in the second position.

MX20107084A 1983-04-20 1984-04-18 IMPROVEMENTS TO CONTROL REEL VALVE MX169831B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48675883A 1983-04-20 1983-04-20

Publications (1)

Publication Number Publication Date
MX169831B true MX169831B (en) 1993-07-27

Family

ID=23933130

Family Applications (1)

Application Number Title Priority Date Filing Date
MX20107084A MX169831B (en) 1983-04-20 1984-04-18 IMPROVEMENTS TO CONTROL REEL VALVE

Country Status (3)

Country Link
JP (1) JPS59205073A (en)
CA (1) CA1227397A (en)
MX (1) MX169831B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5249924B2 (en) * 1972-05-11 1977-12-21
JPS5612453Y2 (en) * 1975-10-07 1981-03-23

Also Published As

Publication number Publication date
JPS59205073A (en) 1984-11-20
JPH0465270B2 (en) 1992-10-19
CA1227397A (en) 1987-09-29

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