GB2264994A - Flow cut-off valve - Google Patents

Flow cut-off valve Download PDF

Info

Publication number
GB2264994A
GB2264994A GB9205147A GB9205147A GB2264994A GB 2264994 A GB2264994 A GB 2264994A GB 9205147 A GB9205147 A GB 9205147A GB 9205147 A GB9205147 A GB 9205147A GB 2264994 A GB2264994 A GB 2264994A
Authority
GB
United Kingdom
Prior art keywords
container
outlet port
seal
float
liquid
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.)
Withdrawn
Application number
GB9205147A
Other versions
GB9205147D0 (en
Inventor
Kenneth Gordon Potts
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.)
CELLAR SERVICES TECHNOLOGY Ltd
Original Assignee
CELLAR SERVICES TECHNOLOGY 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 CELLAR SERVICES TECHNOLOGY Ltd filed Critical CELLAR SERVICES TECHNOLOGY Ltd
Priority to GB9205147A priority Critical patent/GB2264994A/en
Publication of GB9205147D0 publication Critical patent/GB9205147D0/en
Publication of GB2264994A publication Critical patent/GB2264994A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • F16K31/22—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with the float rigidly connected to the valve

Abstract

A flow cut-off valve inserted between a container and suction pump in a liquid handling system (not shown) ensures that no gas or air can be drawn into the pump when the container empties. A float 2 is buoyant in the liquid so that, when the container empties, the float drops to seal the outlet port 4 and the sealing is assisted by magnetic clamping mechanism 3 and 6 or by some other physical means. The seal-assist mechanism may be over-ridden to raise the float. <IMAGE>

Description

LINE FULL DEVICE - CASK This invention relates to a device which ensures that extraction of liquids from a container by the application of suction does not result in the extracting pipework being evacuated when the container empties.
Self priming pumps are widely used as a means of extracting liquid from containers. The pump is connected to the container and air or another gas is allowed to enter the container to replace liquid extracted.
As the contianer empties the air or gas is extracted in place of liquid and the pump, pipework and any associated equipment become charged with air or gas. Upon connection of a full container, as replacement, considerable time is spent in re-establishing full liquid prime within the equipment and pipework and considerable quantities of liquid can be wasted in the form of gas/liquid mixtures, as the system is re-filled.
According to the present invention there is provided an apparatus which is placed between container and pump and which seals the outlet to the pump when the container empties, without need of gas pressure to assist in sealing the outlet port.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing, in which: Figure 1 shows, in section, the functional elements of the invention.
Referring to the drawing the Line Full Device comprises a leak-tight chamber 1 with provision for inlet connection 8 and outlet connection 7.
Within the chamber 1 is a sealed float 2 containing a permanent magent 3. The float 2 is buoyant and assumes a position in the chamber 1, defined by the liquid level 5. As the feed container empties the liquid level 5 falls due to liquid useage through the outlet port 7.
A second magnet 6 is positioned such that a drop in liquid level 5 results in an increasing attractive force between magnet 3 and magnet 6.
As the liquid level 5 drops further the magnetic forces of attraction overcome the residual buoyancy of the float 2 and cause the bottom face of the float 2 to seal onto the elastomer sealing ring 4.
The outlet port 7 is sealed by the magnetic force of attraction clamping float 2 onto seal 4 and remains sealed even as some residual container contents drip into the chamber 1 and cause the liquid level 5 to rise.

Claims (5)

1. A Line Full device which is placed between a liquid container and a suction pump and which seals the outlet to the pump when the container empties, without the need of gas pressure to assist in sealing the outlet port.
2. A Line Full Device as claimed in Claim 1 wherein the outlet port remains sealed, unless released by an override system, even if more liquid enters the device.
3. A Line Full Device as claimed in Claim 1 or Claim 2 wherein a means is provided of releasing the outlet port seal by deliberate override.
4. A Line Full Device as claimed in Claim 2 or Claim 3 wherein the means of locking the seal is by either magnetic or other physical attribute.
5. A Line Full Device as claimed in Claim 3 or Claim 4 wherein the means of releasing the outlet port seal is used to reset the device after fitting a full feed container.
GB9205147A 1992-03-10 1992-03-10 Flow cut-off valve Withdrawn GB2264994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9205147A GB2264994A (en) 1992-03-10 1992-03-10 Flow cut-off valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9205147A GB2264994A (en) 1992-03-10 1992-03-10 Flow cut-off valve

Publications (2)

Publication Number Publication Date
GB9205147D0 GB9205147D0 (en) 1992-04-22
GB2264994A true GB2264994A (en) 1993-09-15

Family

ID=10711799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9205147A Withdrawn GB2264994A (en) 1992-03-10 1992-03-10 Flow cut-off valve

Country Status (1)

Country Link
GB (1) GB2264994A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11428336B2 (en) * 2020-12-04 2022-08-30 Caterpillar Inc. Ball float vent valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258575A (en) * 1925-09-17 1927-04-28 Electrolyt Zinc Australasia Improvements in the treatment of zinc bearing ores for the recovery of zinc by electrolytic deposition
GB1191182A (en) * 1967-08-08 1970-05-06 Exxon Research Engineering Co Improvements in Liquid Flow Control
GB1293651A (en) * 1970-02-13 1972-10-18 Medizin Labortechnik Veb K Shut-off device for infusion and transfusion sets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB258575A (en) * 1925-09-17 1927-04-28 Electrolyt Zinc Australasia Improvements in the treatment of zinc bearing ores for the recovery of zinc by electrolytic deposition
GB1191182A (en) * 1967-08-08 1970-05-06 Exxon Research Engineering Co Improvements in Liquid Flow Control
GB1293651A (en) * 1970-02-13 1972-10-18 Medizin Labortechnik Veb K Shut-off device for infusion and transfusion sets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11428336B2 (en) * 2020-12-04 2022-08-30 Caterpillar Inc. Ball float vent valve

Also Published As

Publication number Publication date
GB9205147D0 (en) 1992-04-22

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)