GB2402182A - Device for dispensing liquids or flowable solids, eg lubricants, over a lengthy period - Google Patents

Device for dispensing liquids or flowable solids, eg lubricants, over a lengthy period Download PDF

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Publication number
GB2402182A
GB2402182A GB0312243A GB0312243A GB2402182A GB 2402182 A GB2402182 A GB 2402182A GB 0312243 A GB0312243 A GB 0312243A GB 0312243 A GB0312243 A GB 0312243A GB 2402182 A GB2402182 A GB 2402182A
Authority
GB
United Kingdom
Prior art keywords
dispensing device
pressure
dispensing
piston
fluid
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Withdrawn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
GB0312243A
Other versions
GB0312243D0 (en
Inventor
Douglas George Anderson
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 GB0312243A priority Critical patent/GB2402182A/en
Publication of GB0312243D0 publication Critical patent/GB0312243D0/en
Publication of GB2402182A publication Critical patent/GB2402182A/en
Withdrawn legal-status Critical Current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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
    • F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
    • F04B9/1253—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor one side of the double-acting piston fluid motor being always under the influence of the fluid under pressure
    • 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
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/18—Lubricating
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/129—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers
    • F04B9/131—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members
    • F04B9/133—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting elastic-fluid motor
    • 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
    • F16N—LUBRICATING
    • F16N11/00—Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricated; Grease cups
    • F16N11/04—Spring-loaded 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
    • F16N—LUBRICATING
    • F16N11/00—Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricated; Grease cups
    • F16N11/10—Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricated; Grease cups by pressure of another fluid

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

The self-contained dispensing device comprises a first piston 1 which is urged by a coil, disc or conical spring or by fluid pressure to move along a cylinder 2 thereby pressurising a sealed volume containing a control fluid 7 which is allowed to escape through pressure control and flow control devices 8, 9. The first piston 1 is connected to a second piston 3 in an adjacent cylinder 4 containing the material to be dispensed through outlet 16. Connections 11, 13 may be provided to recharge the device with control fluid and material to be dispensed, respectively. Additional material dispensing units can be provided in series (figs.2,3,4); the volume of an additional cylinder may be varied by using a cylinder liner and a piston of reduced diameter. The control fluid may be collected in the space 20 or in an adjacent receptacle 22. The device could be maintained at remote locations with minimum tooling and knowledge and could be set up to be remotely monitored; it could operate in pressurised environments such as under water and only when the machine is in operation.

Description

2402 1 82
Introduction
This invention relates to a self-contained device used for dispensing a volume of liquid or flowing solids under pressure at a controlled rate over a lengthy, pre- determined period of time.
Description - Components
This device is a simple and effective method of carrying out the desired task as described in the introduction by utilizing a combination of proven technologies.
The device consists of a piston (01) within a cylinder (02), which is sealed on the periphery and also is allowed to transverse within with the cylinder (02). The piston (01) is attached to piston (03) within cylinder (04) by a connecting rod (05). The device has a force shown as (06) and a fluid of constant viscosity or control fluid shown as (07). The dispensing device has a single or multiple stage pressure control device (08) and a fixed or adjustable flow control device (09) with a pressure gauge or sensor (10) located as shown in Figs 1, 2, 3 & 4. A connection which provides a means of re-charging the unit with control fluid (07) is shown as (11). A connection that provides a means of re-charging the unit with material to be displaced (12) is shown as (13). A connection which provides the means of introducing an additional pressure to increase overall force acting on the pistons and also to act as a vacuum breaker is shown as (14). A means of preventing over-pressurization in the end user by the means of a pre- set pressure relief device is shown as (15). The material to be displaced outlet is shown as (16). Additional material dispensing unit(s) can be attached to existing device as shown in Figs 2, 3 & 4. Second stage piston, cylinder and connecting rod assembly is shown as (17), (18) and (19) respectively. A receptacle to collect control fluid (07) can be provided by utilizing the power source void (20) when a spring type arrangement is used or may be collected in an adjacent receptacle (22). A level sensor or sight glass (23) can be fitted to control fluid receptacle (22) in order to monitor dispensed control fluid level. A reduced diameter piston and cylinder liner arrangement (Fig 4-24) can be fitted in order to vary total dispensed volume of additional cylinders. l
Description- Operation
The force (06) can be applied by either a coil / disk / conical spring arrangement, by compressed gas, or by utilizing process pressure from adjacent plant. This force (06) acting on piston (01) pressurizes and displaces the control fluid (07) through the control fluid tube or gallery (21) to the pressure control device (08). The control fluid (07) pressure can fluctuate up to this point due variations in force (06) whether from process or spring arrangements. The pressure control device (08) reduces the higher varying control fluid pressure to a lower constant pressure, this may have to be done in stages should the pressure differential be too great to enable this pressure drop to be achieved in one stage. The control fluid (07) then exits the pressure control device (08) and onto the flow control device (09). The control fluid (07) between the pressure control device (08) and flow control device (09) will remain constant and can be pre- set in conjunction with the flow rate to atmosphere to give the desired travel rate for the dispensing piston (03). The control fluid (07) pressure can be monitored between the pressure control device (08) and the flow control device (09) by a pressure monitoring device (10) which can monitor the pressure locally by a pressure gauge or remotely by a pressure sensor and transmitter which can have a pre-set tolerance that would alert an operator should it move out with it's normal operating limits. The control fluid (07) will pass through the flow control device (09) that will maintain a pre-determined backpressure and a constant flow through to a receptacle at atmospheric pressure (22). The constant displacement of the control fluid (07) from the cylinder (02) will result in a constant linear movement of piston (01) which in turn will apply a force on piston (03) via connecting rod (05) will result in a constant flow rate of material to be displaced (12). The dispensed control fluid (07) level can be monitored in the receptacle visually by a transparent area in the receptacle wall, by a sight glass bridle, by a level gauge or by displacement probe which in turn can be monitored remotely via a level sensor and transmitter (23) which can have a pre-set tolerance that would alert an operator should it trend out with it's normal operating limits.
FIG 1 illustrates the afore described device configured with one material to be displaced outlet.
FIG 2 illustrates the afore described with two material to be displaced outlets and shown in the fully charged condition.
FIG 3 illustrates the afore described with two material to be displaced outlets and shown in the fully discharged condition.
FIG 4 illustrates the afore described with two material to be displaced outlets and shown in the fully discharged condition complete with a reduced diameter piston and cylinder liner arrangement (24) which can be fitted in order to vary total dispensed volume of additional cylinders. \
Background
Currently these types of devices are used to supply lubrication to mechanical moving parts, but most of these devices have a built in power cell which is required to supply energy to a small pump or to generate a gas by an electrical / chemical process which in turn pressurizes a bladder which forces lubricant onto the end user.
These devices all tend to have limitations with regard to reliability of power cell or chemical process functioning constantly or for the desired period of time, especially in harsh environments where temperature extremities can affect these vulnerable items.
These devices also have to be engineered to a standard to allow them to be utilized in potentially explosive environments.
It is generally difficult to determine what the current settings should be in these devices in order to overcome supply variation in lubricant backpressure in delivery tubing or due to varying restrictions within the end user.
Other restrictions include having to remove such devices and return them to the supplier in order to have them re-charged with lubricant or in order to carry out maintenance.
The device to which this invention relates could be maintained and recharged on remote locations with the minimum of specialist tooling and knowledge and will operate without spark potential. It could also be engineered to operate in pressurized environments such as under water.
The device to which this invention relates can be set up to be remotely monitored and configured to operate only when the machine is in operation. ( j

Claims (21)

  1. Claims 1. A dispensing device comprising of a piston within a cylinder,
    coil spring(s) and a fluid to control displacement rate of piston within cylinder.
  2. 2. A dispensing device as claimed in Claim 1 wherein controlling the piston(s) movement by the use of a fluid passing through a pressure control device.
  3. 3. A dispensing device as claimed in Claim 1 and Claim 2 wherein the pressure control device may be single or multiple stage in order to achieve desired pressure drop.
  4. 4. A dispensing device as claimed in Claim 1 wherein controlling the piston(s) movement by the use of a fluid passing through a flow control device.
  5. 5. A dispensing device as claimed in Claim 1 and Claim 4 wherein the flow control device may be infinitely variable in order to achieve desired flow rate.
  6. 6. A dispensing device as claimed in Claim 1 wherein the control fluid pressure can be monitored downstream from pressure control device and upstream from flow control device in order to confirm operation locally by a pressure gauge.
  7. 7. A dispensing device as claimed in Claim 1 and Claim 6 wherein the control fluid pressure can be monitored downstream from pressure control device and upstream from flow control device in order to confirm operation remotely by a pressure sensor and transmitter.
  8. 8. A dispensing device as claimed in Claim 1 wherein the force generated by the coil spring(s) could be replaced by the utilization of pressure from adjacent process.
  9. 9. A dispensing device as claimed in Claim 1 wherein the force generated by the coil spring(s) could be replaced by the use of a bottled compressed gas.
  10. 10. A dispensing device as claimed in Claim 1 wherein the force generated by the coil spring(s) could be replaced by the utilization of a disc spring arrangement.
  11. 11. A dispensing device as claimed in Claim 1 wherein the force generated by the coil spring(s) could be replaced by the utilization of a conical spring arrangement.
  12. 12. A dispensing device as claimed in Claim 1 wherein additional material dispensing cylinders and pistons can be added to existing unit.
    Claims (Continued)
  13. 13. A dispensing device as claimed in Claim 1 and Claim 12 wherein additional forces can be subjected to the pistons by inserting additional springs or pressures in cavities (See Fig 2 - 01).
  14. 14. A dispensing device as claimed in Claim 1 wherein system operation can be confirmed locally by visually noting displaced fluid level in control fluid receptacle by the means of a sight glass or transparent receptacle.
  15. 15. A dispensing device as claimed in Claim 1 and Claim 14 wherein system operation can be confirmed remotely by monitoring displaced fluid level in control fluid receptacle by the means of a level sensor and transmitter.
  16. 16. A dispensing device as claimed in Claim 1 wherein additional lappings can be generated in each cylinder cavity in order to eliminate drawing vacuum and also to provide a facility to provide additional pressure on pistons.
  17. 17. A dispensing device as claimed in Claim 1 wherein a pressure relief device can be fitted on material dispensing outlet(s) to prevent over pressurization in the end user.
  18. 18.A dispensing device as claimed in Claim I wherein connections can be provided to replenish material to be displaced.
  19. l9.A dispensing device as claimed in Claim 1 wherein connections can be provided to replenish control fluid.
  20. 20. A dispensing device as claimed in Claim 1 and Claim 12 wherein additional material dispensing cylinders can vary in diameter in order give different supply rates from the same multiple outlet dispensing unit. (See Fig 4 -24)
  21. 21. A dispensing device substantially as herein described and illustrated in the accompanying c rawmgs
GB0312243A 2003-05-29 2003-05-29 Device for dispensing liquids or flowable solids, eg lubricants, over a lengthy period Withdrawn GB2402182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0312243A GB2402182A (en) 2003-05-29 2003-05-29 Device for dispensing liquids or flowable solids, eg lubricants, over a lengthy period

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0312243A GB2402182A (en) 2003-05-29 2003-05-29 Device for dispensing liquids or flowable solids, eg lubricants, over a lengthy period

Publications (2)

Publication Number Publication Date
GB0312243D0 GB0312243D0 (en) 2003-07-02
GB2402182A true GB2402182A (en) 2004-12-01

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ID=9958894

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0312243A Withdrawn GB2402182A (en) 2003-05-29 2003-05-29 Device for dispensing liquids or flowable solids, eg lubricants, over a lengthy period

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005111495A1 (en) * 2004-05-14 2005-11-24 Lincoln Gmbh & Co. Kg Lubricant pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120522A1 (en) * 1983-03-17 1984-10-03 DROPSA S.p.A. Pneumatically operated pump with pressurised reservoir for lubrication systems, particularly for automotive traction
SU1275173A1 (en) * 1985-10-08 1986-12-07 Предприятие П/Я А-7899 Device for automatic feed of packing lubricant to valve cutoff unit
DE4036484A1 (en) * 1990-11-16 1992-05-21 Westfalia Becorit Ind Tech Central lubrication device for underground mining machine - couples all lubrication lines via distributor to hydraulically-operated grease gun
WO1996008648A1 (en) * 1994-09-14 1996-03-21 Wallace & Tiernan, Inc. Metering pump control system
JP2001041171A (en) * 1999-07-30 2001-02-13 Toyota Motor Corp Metering pump and liquid pressure feed

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120522A1 (en) * 1983-03-17 1984-10-03 DROPSA S.p.A. Pneumatically operated pump with pressurised reservoir for lubrication systems, particularly for automotive traction
SU1275173A1 (en) * 1985-10-08 1986-12-07 Предприятие П/Я А-7899 Device for automatic feed of packing lubricant to valve cutoff unit
DE4036484A1 (en) * 1990-11-16 1992-05-21 Westfalia Becorit Ind Tech Central lubrication device for underground mining machine - couples all lubrication lines via distributor to hydraulically-operated grease gun
WO1996008648A1 (en) * 1994-09-14 1996-03-21 Wallace & Tiernan, Inc. Metering pump control system
JP2001041171A (en) * 1999-07-30 2001-02-13 Toyota Motor Corp Metering pump and liquid pressure feed

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005111495A1 (en) * 2004-05-14 2005-11-24 Lincoln Gmbh & Co. Kg Lubricant pump

Also Published As

Publication number Publication date
GB0312243D0 (en) 2003-07-02

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