GB876853A - Improvements in or relating to vapour vacuum pumps - Google Patents

Improvements in or relating to vapour vacuum pumps

Info

Publication number
GB876853A
GB876853A GB428257A GB428257A GB876853A GB 876853 A GB876853 A GB 876853A GB 428257 A GB428257 A GB 428257A GB 428257 A GB428257 A GB 428257A GB 876853 A GB876853 A GB 876853A
Authority
GB
United Kingdom
Prior art keywords
plug
duct
vapours
flow
cylinder
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
GB428257A
Inventor
Basil Dixon Power
Nigel Thomas Metcalf Dennis
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.)
Edwards High Vacuum Ltd
Original Assignee
Edwards High Vacuum 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 Edwards High Vacuum Ltd filed Critical Edwards High Vacuum Ltd
Priority to GB428257A priority Critical patent/GB876853A/en
Publication of GB876853A publication Critical patent/GB876853A/en
Expired 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
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F9/00—Diffusion pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

876,853. Steam traps. EDWARDS HIGH VACUUM Ltd. Feb. 6, 1958 [Feb. 7, 1957], No. 4282/57. Class 64(2) [Also in Group XXVIII] In a diffusion pump, the return line for the condensed vapours flowing to the boiler is provided with a device to allow flow of the condensed vapours while preventing the flow of uncondensed vapours. A plug 1 provided with a piston head 2 is housed in a cylinder or well 3 which acts as a liquid reservoir, an O ring seal 4 being provided. The plug has a central duct 5 which communicates with a duct formed between the surfaces of the plug 1 and cylinder 3 by the stepped bottom 6 of the plug, this latter duct communicating by a drain passage 8, main body 7 and tube 10 with the pump boiler. When the pump is in operation condensed vapours from a condenser 9 flow through the duct 5 to the pump boiler and from the reservoir in the .well 3 between the duct 5 and drain passage 8 which prevents the flow of vapours. The duct 5 is tapped at 12 to facilitate removal of the plug for cleaning. The plug 1 may be in the form of a set screw, provided with a central axial hole, without threads on the major portion of its shank, but a few threads under its head, the plug being screwed into the cylinder and sealed by means of a flat washer.
GB428257A 1957-02-07 1957-02-07 Improvements in or relating to vapour vacuum pumps Expired GB876853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB428257A GB876853A (en) 1957-02-07 1957-02-07 Improvements in or relating to vapour vacuum pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB428257A GB876853A (en) 1957-02-07 1957-02-07 Improvements in or relating to vapour vacuum pumps

Publications (1)

Publication Number Publication Date
GB876853A true GB876853A (en) 1961-09-06

Family

ID=9774191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB428257A Expired GB876853A (en) 1957-02-07 1957-02-07 Improvements in or relating to vapour vacuum pumps

Country Status (1)

Country Link
GB (1) GB876853A (en)

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