JPS57193786A - Air compressor with automatic unloading system - Google Patents

Air compressor with automatic unloading system

Info

Publication number
JPS57193786A
JPS57193786A JP56077970A JP7797081A JPS57193786A JP S57193786 A JPS57193786 A JP S57193786A JP 56077970 A JP56077970 A JP 56077970A JP 7797081 A JP7797081 A JP 7797081A JP S57193786 A JPS57193786 A JP S57193786A
Authority
JP
Japan
Prior art keywords
valve
sheet
furnished
stem
air compressor
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.)
Granted
Application number
JP56077970A
Other languages
Japanese (ja)
Other versions
JPS6261796B2 (en
Inventor
Haruo Ito
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.)
MITSUWA SEIKI CO Ltd
Sanwa Seiki Ltd
Original Assignee
MITSUWA SEIKI CO Ltd
Sanwa Seiki Ltd
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 MITSUWA SEIKI CO Ltd, Sanwa Seiki Ltd filed Critical MITSUWA SEIKI CO Ltd
Priority to JP56077970A priority Critical patent/JPS57193786A/en
Publication of JPS57193786A publication Critical patent/JPS57193786A/en
Publication of JPS6261796B2 publication Critical patent/JPS6261796B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • F04B49/243—Bypassing by keeping open the inlet valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To eliminate necessity for use of a separate pressure control valve and reduce the magnitude of pipings by installing, in an automatic valve type reciprocative air compressor, a combination of a push rod which is to actuate the suction valve of compressor and a pressure control valve which is to operate in accordance with the inner pressure of air tank sensed. CONSTITUTION:Above the suction valve 7 installed adjacent to the intake 1, a piston 9 having a leg 9a is furnished pressed upward by a spring 12, and a valve 8 is installed pressed downward by a spring 17, being guided by the stem 16 in sliding, in such a way as contacting the feed sheet 11 furnished at the piston 9. An exhaust sheet 10 is formed at the lower end of the stem 16. Rise of the inner pressure of tank 3 will depress the valve 8 to first contact the exhaust sheet 10 and then to be in unload condition by opening the feed sheet 11. For returning, the exhaust sheet 10 opens first to release the internal air from the outlet 13 and port b.
JP56077970A 1981-05-25 1981-05-25 Air compressor with automatic unloading system Granted JPS57193786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56077970A JPS57193786A (en) 1981-05-25 1981-05-25 Air compressor with automatic unloading system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077970A JPS57193786A (en) 1981-05-25 1981-05-25 Air compressor with automatic unloading system

Publications (2)

Publication Number Publication Date
JPS57193786A true JPS57193786A (en) 1982-11-29
JPS6261796B2 JPS6261796B2 (en) 1987-12-23

Family

ID=13648770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077970A Granted JPS57193786A (en) 1981-05-25 1981-05-25 Air compressor with automatic unloading system

Country Status (1)

Country Link
JP (1) JPS57193786A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61258952A (en) * 1985-05-10 1986-11-17 Nippon Denso Co Ltd Fuel injection controller for diesel engine
CN103410717A (en) * 2013-07-16 2013-11-27 山河智能装备股份有限公司 Hydraulic drill carriage air compressor system unloading control device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61258952A (en) * 1985-05-10 1986-11-17 Nippon Denso Co Ltd Fuel injection controller for diesel engine
CN103410717A (en) * 2013-07-16 2013-11-27 山河智能装备股份有限公司 Hydraulic drill carriage air compressor system unloading control device and method

Also Published As

Publication number Publication date
JPS6261796B2 (en) 1987-12-23

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