GB2248890A - Pneumatic trigger control of a pump - Google Patents

Pneumatic trigger control of a pump Download PDF

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Publication number
GB2248890A
GB2248890A GB9018438A GB9018438A GB2248890A GB 2248890 A GB2248890 A GB 2248890A GB 9018438 A GB9018438 A GB 9018438A GB 9018438 A GB9018438 A GB 9018438A GB 2248890 A GB2248890 A GB 2248890A
Authority
GB
United Kingdom
Prior art keywords
high pressure
water
lance
pressure pump
pump
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Withdrawn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
GB9018438A
Other versions
GB9018438D0 (en
Inventor
Shaun Waddingham
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9018438A priority Critical patent/GB2248890A/en
Publication of GB9018438D0 publication Critical patent/GB9018438D0/en
Publication of GB2248890A publication Critical patent/GB2248890A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028—Spray guns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor

Landscapes

  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

A pneumatic trigger assembly (5) controls a high pressure water pump (2) feeding water through a hose (3) to a hand held lance (8) and nozzle (9). The process of pumping water from the high pressure pump (2) into the hose (3) is activated or deactivated by depression of a lever (7) which operates a pneumatic valve (6) within the trigger assembly (5), sending the appropriate pneumatic signal back to high pressure pump (2) via a control hose (4). <IMAGE>

Description

Pneumatic Trigger Control This invention relates to the method of control of a mobile hand operated high pressure water jet pumping system. Such a piece of equipment may be used, for example, for the cutting and removal of concrete, removal of coatings and debris from concrete and steel surfaces or for general cleaning of surfaces.
Systems of this kind have been proposed where water is pumped from a high pressure pump, comprising of an engine or prime mover attached to a suitable high pressure pump the water then being transmitted via a high pressure hose to the cutting nozzle which is mounted on the end of a hand held lance, the operator control of the water supply to the nozzle being by means of a hand operated trigger control lever, mounted on the back of the said lance.
In past inventions the trigger normally operated a mechanical water valve set in the trigger body. This has several undesirable characteristics of which all are detrimental to safety. Using this type of control the water would be held pressurised in the hose whilst not passing water to the nozzle, a danger if a hose should fail. The trigger would also require large operational forces to overcome the pressure in the valve, and would give rapid connection of the lance and nozzle to full pressure in the line - hence a large operator stress level and a related danger aspect.
This invention seeks to overcome the above problems by control of the emission of the high pressure water by means other than that described above.
In accordance with the invention there is provided a high pressure pump, which provides water at high pressure via a flexible hose to a hand held lance such a lance comprising of a nozzle/nozzles and a hand operated trigger mechanism, this mechanism being a pneumatic valve connected via a pneumatic pipe to the high pressure pump, and connected in such a manner, utilising a suitable air supply, that whilst the trigger is released water pressure and flow exiting from the nozzle on the said lance is reduced or stopped.
The embodiment of the invention will now be described by reference to an example as in fig.l which is a schematic jet cutting system. Water is taken from a suitable supply (1) into the high pressure pump (2). The pump then provides high pressure delivery of water via hose (3) to the high pressure lance tube (8), and subsequently the nozzle (9). It is a feature of this invention that the process of pumping water by (2) into hose (3) may be activated or de-activated by depression of lever (7) mounted within the trigger assembly (5). This would work by lever (7) actioning a valve (6) within trigger assembly (5) and sending the appropriate pneumatic signal back to the high pressure pump (2) via pipe (4).

Claims (1)

  1. A high pressure pumping system consisting of a high pressure pump supplying water via a suitable hose to a hand held lance, the said lance having an attached high pressure nozzle / nozzles and control lever, and wherein the control lever can be used to activate / deactivate the process of pumping water by the high pressure pump to the said lance, and where the control lever controls the said activation / deactivation by means of a Pneumatic valve operated by the lever and an appropriate pneumatic signal transmitted by control hoses to the high pressure pump.
GB9018438A 1990-08-22 1990-08-22 Pneumatic trigger control of a pump Withdrawn GB2248890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9018438A GB2248890A (en) 1990-08-22 1990-08-22 Pneumatic trigger control of a pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9018438A GB2248890A (en) 1990-08-22 1990-08-22 Pneumatic trigger control of a pump

Publications (2)

Publication Number Publication Date
GB9018438D0 GB9018438D0 (en) 1990-10-03
GB2248890A true GB2248890A (en) 1992-04-22

Family

ID=10681063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9018438A Withdrawn GB2248890A (en) 1990-08-22 1990-08-22 Pneumatic trigger control of a pump

Country Status (1)

Country Link
GB (1) GB2248890A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106315770A (en) * 2016-11-14 2017-01-11 河南锦源环保科技有限公司 Full pneumatic automatic control system with organic membrane

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1334769A (en) * 1970-10-26 1973-10-24 Leistikow J Device for the control of a high pressure pump
GB1447232A (en) * 1972-11-15 1976-08-25 Speed O Klene Equipment Co Ltd Pumping assembly
US4585168A (en) * 1983-04-13 1986-04-29 Woma Apparatebau High pressure liquid installation
US4589825A (en) * 1983-11-25 1986-05-20 Knud Erik Westergaard High-pressure cleaning unit with a bypass valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1334769A (en) * 1970-10-26 1973-10-24 Leistikow J Device for the control of a high pressure pump
GB1447232A (en) * 1972-11-15 1976-08-25 Speed O Klene Equipment Co Ltd Pumping assembly
US4585168A (en) * 1983-04-13 1986-04-29 Woma Apparatebau High pressure liquid installation
US4589825A (en) * 1983-11-25 1986-05-20 Knud Erik Westergaard High-pressure cleaning unit with a bypass valve

Also Published As

Publication number Publication date
GB9018438D0 (en) 1990-10-03

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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)