GB1019159A - Valve for hydraulic pit props - Google Patents

Valve for hydraulic pit props

Info

Publication number
GB1019159A
GB1019159A GB2267864A GB2267864A GB1019159A GB 1019159 A GB1019159 A GB 1019159A GB 2267864 A GB2267864 A GB 2267864A GB 2267864 A GB2267864 A GB 2267864A GB 1019159 A GB1019159 A GB 1019159A
Authority
GB
United Kingdom
Prior art keywords
valve
seat
valve member
closed
bore tapered
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
Application number
GB2267864A
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.)
Salzgitter Maschinen AG
Original Assignee
Salzgitter Maschinen AG
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 Salzgitter Maschinen AG filed Critical Salzgitter Maschinen AG
Publication of GB1019159A publication Critical patent/GB1019159A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface

Abstract

1,019,159. Valves. SALZGITTER MASCHINEN A.G. June 2, 1964 [July 1, 1963], No. 22678/64. Heading F2V. A pressure relief valve comprises a valve closure element 7, Fig. 3 (not shown), loaded by a spring towards its seat and having a conical closure portion. The valve seat comprises two annular bodies 5, 6 of which the body 5 is harder than the body 6. The body 5 has a bore tapered at an angle greater than that of the valve member while the body 6 has a bore tapered at the same angle as the valve member but of a diameter less than that of the corresponding portion of the valve member when the valve is closed. Thus, when the valve is closed, the seat body 6 yields until the valve member engages the seat body 5. The body 6 is preferably made of a plastics material and formed with a lip 14 on which the fluid pressure acts to increase the sealing effect. The seat body 5 may be of steel.
GB2267864A 1963-07-01 1964-06-02 Valve for hydraulic pit props Expired GB1019159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES85932A DE1217317B (en) 1963-07-01 1963-07-01 Relief valve for hydraulic pit rams or hydraulic pit support

Publications (1)

Publication Number Publication Date
GB1019159A true GB1019159A (en) 1966-02-02

Family

ID=7512671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2267864A Expired GB1019159A (en) 1963-07-01 1964-06-02 Valve for hydraulic pit props

Country Status (4)

Country Link
BE (1) BE649895A (en)
DE (1) DE1217317B (en)
GB (1) GB1019159A (en)
NL (1) NL6407487A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566486A (en) * 1982-03-08 1986-01-28 Taylor Julian S Soft seat for safety valve
GB2169059A (en) * 1984-12-03 1986-07-02 Herion Werke Kg Valve for high-pressure, dust-laden gases

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2627233C2 (en) * 1976-06-18 1986-07-10 Josef 6200 Wiesbaden Nemetz Safety valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1380415A (en) * 1919-04-10 1921-06-07 James K Putnam Check-valve
DE464802C (en) * 1924-09-14 1928-08-27 Peter Marx Pump valve set with interchangeable seats
BE571508A (en) * 1957-09-28

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566486A (en) * 1982-03-08 1986-01-28 Taylor Julian S Soft seat for safety valve
GB2169059A (en) * 1984-12-03 1986-07-02 Herion Werke Kg Valve for high-pressure, dust-laden gases

Also Published As

Publication number Publication date
DE1217317B (en) 1966-05-26
BE649895A (en) 1964-10-16
NL6407487A (en) 1965-01-04

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