WO2000012426A1 - Device for distribution of liquids - Google Patents

Device for distribution of liquids Download PDF

Info

Publication number
WO2000012426A1
WO2000012426A1 PCT/NO1999/000264 NO9900264W WO0012426A1 WO 2000012426 A1 WO2000012426 A1 WO 2000012426A1 NO 9900264 W NO9900264 W NO 9900264W WO 0012426 A1 WO0012426 A1 WO 0012426A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
tank
vacuum tank
mixing pump
liquids
Prior art date
Application number
PCT/NO1999/000264
Other languages
French (fr)
Inventor
Elner Biding
Original Assignee
Rukko As
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 Rukko As filed Critical Rukko As
Priority to AU55388/99A priority Critical patent/AU5538899A/en
Publication of WO2000012426A1 publication Critical patent/WO2000012426A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/72—Devices for applying air or other gas pressure for forcing liquid to delivery point
    • B67D7/725—Devices for applying air or other gas pressure for forcing liquid to delivery point using negative pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/74—Devices for mixing two or more different liquids to be transferred

Definitions

  • the present invention relates to a device for distribution of liquids, such as windscreen washing liquid, urea-water mixtures, diesel oil and gasoline, at a gas station or alike.
  • a level inductor is required in the underground tank in addition to a non return valve located in underground tank, so that the suction line at all time is filled with liquid and not air.
  • a non-return valve has several disadvantages.
  • the opening pressure for the non-return valve first of all results in a pressure drop of 0,1 - 0,2 bar.
  • Moreover is becomes expensive to replace a damaged non-return valve as it is necessary to dig out around the tank to replace the valve.
  • a level inductor in the underground tank will also result in expensive digging operations upon failure.
  • the object of the present invention is to provide a solution for distribution of liquids where the above mentioned problems are avoided by giving the functionality as required without the necessity of having a non return valve and a level inductor in the underground tank.
  • this object is accomplished by a device for distribution or liquids and liquid mixtures where the liquid or at least one component of the liquid mixture is stored in one or more underground tank(s), where the liquid or liquids is sucked up and is optionally mixed in a mixing pump with each other or with liquid from another source, such as tap water, before distribution, and where a vacuum tank is provided in the path of the liquid(s) between the underground tank(s) and the mixing pump, and where an inlet for the liquid from the underground tank is provided in or close to the top of the vacuum tank, while an outlet for emptying the vacuum tank is provided in or close to the bottom of the vacuum tank, so that the vacuum tank has the function of a water lock.
  • the vacuum tank is placed at approximately the same level as the mixing pump.
  • a vacuum tank is provided for all supplies of liquids to be supplied to the mixing pump.
  • level inductor(s) in the vacuum tank(s) and in any water tank, and that the level inductor(s) in connected to a control device that stops the mixing pump if the liquid level drops below a pre-set level.
  • Concentrate for windscreen washing liquid intended to be mixed with water before sale and use is placed in an underground tank 1 having a suction pipe 2.
  • the underground tank 1 is also connected to a not shown filling line.
  • the suction pipe 2 leads to an inlet close to the top of a vacuum tank 3.
  • the vacuum tank 3 has an outlet in the bottom connected to a concentrate pipe 4 leading from the vacuum tank to a mixing pump 6. Additionally water is led to the mixing pump 6 through a water line 5 that is leading from a water tank 7 that is connected to the tap water 8.
  • the water tank 7 has the function of a buffer tank between the tap water and the present device.
  • Level monitors 9 and 10 monitors the level of the liquid in the vacuum tank 3 and the water tank 7, respectively, and is sending signals to an electronic control device 13 through signalling lines 11 and 12. If the liquid level in the vacuum tank 3 or the water tank 7 falls below a pre-set level, the mixing pump 6 is shut down by the control device 13. Normally the mixing pump 6 is powered by electric power or pressurised air. The signal from the control device will therefor stop the supply of electric power or pressurised air by means of a relay or a valve 14.
  • the mixing pump 6 sucks concentrate and water from the pipes 4 and 5, respectively, and mixes these liquid streams before the mixture is led through the distribution line 16 for distribution from a not illustrated filling station.
  • the mixing pump 6 sucks concentrate and water from respectively the vacuum tank 3 and the water tank 7, the pressure in the vacuum tank drops and concentrate is sucked into the vacuum tank 3 from the underground tank 1 via the suction pipe 2, whereas a falling level in the water tank 7 will result in supply of water from the tap water 8.
  • water from the tap water supply 8 has a pressure above atmospheric pressure, whereas the concentrate in the underground tank 1 has to be sucked up by the negative pressure generated in the vacuum tank 3 as the mixing pump sucks concentrate from the vacuum tank 3.
  • the suction pipe 2 and the vacuum tank 3 is filled with concentrate.
  • a small air pocket may however be present from the start or be generated as small quantities of air is carried with the concentrate or by a small leak in the system. The size of any air pocket is constantly being monitored by the level monitors 9, 10 and the control device 13.
  • the liquid level in the vacuum tank 3 will drop, a signal will be sent to the control device by the level monitor 9 and an alarm will be sent.
  • the mixing pump 6 will be shut of, as mentioned above. In this way it is guarantied that the concentrate pipe 4 is filled with concentrate at all times. Accordingly the reliability and security claimed by the customer and optionally by authorities, to guaranty that the customer is delivered what he has paid for, adequately taken into account, without the necessity of any non return valve or level monitors in the underground tank.
  • the water supply 8 may be replaced by an underground tank and a suction pipe.
  • a vacuum tank 3 as described above will then replace the water tank 7.
  • the example as illustrated in the figure illustrates as mentioned a device for windscreen washing liquid where the concentrate is situated in an underground tank 1 and where the water is supplied from the normal tap water.
  • a device for windscreen washing liquid where the concentrate is situated in an underground tank 1 and where the water is supplied from the normal tap water.
  • more than one underground tank will be used.
  • An example might be a device comprising one underground tank containing the main or basic component of the product to be sold, and another underground tank containing an additive to be mixed with the diesel oil or gasoline.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

A device for distribution of liquids and liquid mixtures where the liquid or at least one component of the liquid mixture is stored in one or more underground tank(s) (1), where the liquid or liquids is sucked up and is optionally mixed in a mixing pump (6) with each other or with liquid from another source, such as tap water, before distribution, wherein a vacuum tank (3) is provided in the path of the liquid(s) between the underground tank(s) (1) and the mixing pump (6), and where an inlet for the liquid from the underground tank (1) is provided in or close to the top of the vacuum tank (3), while an outlet for emptying the vacuum tank (3) is provided in or close to the bottom of the vacuum tank (3), so that the vacuum tank (3) has the function of a water lock.

Description

DEVICE FOR DISTRIBUTION OF LIQUIDS
The present invention relates to a device for distribution of liquids, such as windscreen washing liquid, urea-water mixtures, diesel oil and gasoline, at a gas station or alike.
Liquids that is stored in buried underground tanks at gas stations or alike, are pumped up above the ground where the liquids optionally are mixed with other liquids before being distributed to the customer. To avoid that the customer is paying for expensive liquid but is delivered air, a level inductor is required in the underground tank in addition to a non return valve located in underground tank, so that the suction line at all time is filled with liquid and not air.
However, a non-return valve has several disadvantages. The opening pressure for the non-return valve first of all results in a pressure drop of 0,1 - 0,2 bar. Moreover is becomes expensive to replace a damaged non-return valve as it is necessary to dig out around the tank to replace the valve. A level inductor in the underground tank will also result in expensive digging operations upon failure.
The object of the present invention is to provide a solution for distribution of liquids where the above mentioned problems are avoided by giving the functionality as required without the necessity of having a non return valve and a level inductor in the underground tank.
According to the invention this object is accomplished by a device for distribution or liquids and liquid mixtures where the liquid or at least one component of the liquid mixture is stored in one or more underground tank(s), where the liquid or liquids is sucked up and is optionally mixed in a mixing pump with each other or with liquid from another source, such as tap water, before distribution, and where a vacuum tank is provided in the path of the liquid(s) between the underground tank(s) and the mixing pump, and where an inlet for the liquid from the underground tank is provided in or close to the top of the vacuum tank, while an outlet for emptying the vacuum tank is provided in or close to the bottom of the vacuum tank, so that the vacuum tank has the function of a water lock. Preferably the vacuum tank is placed at approximately the same level as the mixing pump.
It is also preferred that a vacuum tank is provided for all supplies of liquids to be supplied to the mixing pump.
It is also preferred that there is provided level inductor(s) in the vacuum tank(s) and in any water tank, and that the level inductor(s) in connected to a control device that stops the mixing pump if the liquid level drops below a pre-set level.
The invention will now be illustrated in more detail with reference to the enclosed figure 1 and an exemplary device for distribution of for windscreen washing liquid.
Concentrate for windscreen washing liquid intended to be mixed with water before sale and use, is placed in an underground tank 1 having a suction pipe 2. The underground tank 1 is also connected to a not shown filling line. The suction pipe 2 leads to an inlet close to the top of a vacuum tank 3. The vacuum tank 3 has an outlet in the bottom connected to a concentrate pipe 4 leading from the vacuum tank to a mixing pump 6. Additionally water is led to the mixing pump 6 through a water line 5 that is leading from a water tank 7 that is connected to the tap water 8. The water tank 7 has the function of a buffer tank between the tap water and the present device.
Level monitors 9 and 10 monitors the level of the liquid in the vacuum tank 3 and the water tank 7, respectively, and is sending signals to an electronic control device 13 through signalling lines 11 and 12. If the liquid level in the vacuum tank 3 or the water tank 7 falls below a pre-set level, the mixing pump 6 is shut down by the control device 13. Normally the mixing pump 6 is powered by electric power or pressurised air. The signal from the control device will therefor stop the supply of electric power or pressurised air by means of a relay or a valve 14.
The mixing pump 6 sucks concentrate and water from the pipes 4 and 5, respectively, and mixes these liquid streams before the mixture is led through the distribution line 16 for distribution from a not illustrated filling station. When the mixing pump 6 sucks concentrate and water from respectively the vacuum tank 3 and the water tank 7, the pressure in the vacuum tank drops and concentrate is sucked into the vacuum tank 3 from the underground tank 1 via the suction pipe 2, whereas a falling level in the water tank 7 will result in supply of water from the tap water 8.
In the illustrated device water from the tap water supply 8 has a pressure above atmospheric pressure, whereas the concentrate in the underground tank 1 has to be sucked up by the negative pressure generated in the vacuum tank 3 as the mixing pump sucks concentrate from the vacuum tank 3. During installation of the device the suction pipe 2 and the vacuum tank 3 is filled with concentrate. A small air pocket may however be present from the start or be generated as small quantities of air is carried with the concentrate or by a small leak in the system. The size of any air pocket is constantly being monitored by the level monitors 9, 10 and the control device 13.
If the underground tank 1 is empty so that the suction pipe 2 sucks air, the liquid level in the vacuum tank 3 will drop, a signal will be sent to the control device by the level monitor 9 and an alarm will be sent. Before the liquid level in the vacuum tank falls below a predetermined level, the mixing pump 6 will be shut of, as mentioned above. In this way it is guarantied that the concentrate pipe 4 is filled with concentrate at all times. Accordingly the reliability and security claimed by the customer and optionally by authorities, to guaranty that the customer is delivered what he has paid for, adequately taken into account, without the necessity of any non return valve or level monitors in the underground tank.
In case it is desirable to mix to or more concentrated liquids, the water supply 8 may be replaced by an underground tank and a suction pipe. A vacuum tank 3 as described above will then replace the water tank 7.
The example as illustrated in the figure, illustrates as mentioned a device for windscreen washing liquid where the concentrate is situated in an underground tank 1 and where the water is supplied from the normal tap water. For distribution of gasoline and diesel oil, more than one underground tank will be used. An example might be a device comprising one underground tank containing the main or basic component of the product to be sold, and another underground tank containing an additive to be mixed with the diesel oil or gasoline. These devices will also be simpler and more reliable in use as no non-return valve and no level inductor are necessary in the underground tanks.

Claims

t e n t C 1 l m
1.
A device for distribution or liquids and liquid mixtures where the liquid or at least one component of the liquid mixture is stored in one or more underground tank(s) (1), where the liquid or liquids is sucked up and is optionally mixed in a mixing pump (6) with each other or with liquid from another source, such as tap water, before distribution, characterised in that a vacuum tank (3) is provided in the path of the liquid(s) between the underground tank(s) (1) and the mixing pump (6), and where an inlet for the liquid from the underground tank (1) is provided in or close to the top of the vacuum tank (3), while an outlet for emptying the vacuum tank (3) is provided in or close to the bottom of the vacuum tank (3), so that the vacuum tank (3) has the function of a water lock.
2.
Device according to claim 1, characterised in that the vacuum tank is placed at approximately the same level as the mixing pump.
3. Device according to claim 1 or 2, characterised in that a vacuum tank is provided for all supplies of liquids to be supplied to the mixing pump.
4.
Device according to any of the preceding claims, characterised in that there is provided level inductor(s) in the vacuum tank(s) and in any water tank, and that the level inductor(s) in connected to a control device that stops the mixing pump if the liquid level drops below a pre-set level.
PCT/NO1999/000264 1998-08-27 1999-08-23 Device for distribution of liquids WO2000012426A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55388/99A AU5538899A (en) 1998-08-27 1999-08-23 Device for distribution of liquids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO19983944 1998-08-27
NO983944A NO983944L (en) 1998-08-27 1998-08-27 Device for distributing liquids

Publications (1)

Publication Number Publication Date
WO2000012426A1 true WO2000012426A1 (en) 2000-03-09

Family

ID=19902369

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1999/000264 WO2000012426A1 (en) 1998-08-27 1999-08-23 Device for distribution of liquids

Country Status (3)

Country Link
AU (1) AU5538899A (en)
NO (1) NO983944L (en)
WO (1) WO2000012426A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102700740A (en) * 2012-05-20 2012-10-03 烟台卓越生物技术有限责任公司 Filling device capable of filling various liquid simultaneously
GB2537100A (en) * 2015-03-23 2016-10-12 Great Clarity Ltd Dispensing apparatus
US10414381B2 (en) * 2015-05-22 2019-09-17 Hightech Solutions Nyc, Llc System for optimizing the use and the income generation by a service station of washing fluids

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131215A (en) * 1977-07-05 1978-12-26 Sun Oil Company Of Pennsylvania Dispenser with additive option
WO1986004828A1 (en) * 1985-02-15 1986-08-28 Oy Hackman Ab Procedure and means for use in pumping and volumetry of foodstuff liquids
WO1992012093A1 (en) * 1991-01-11 1992-07-23 Facet Quantek, Inc. Liquid fuel dispensing system with improved means of preventing contamination
US5312552A (en) * 1993-02-02 1994-05-17 Norman J M Method and apparatus for removing BTX-type gases from a liquid
EP0691304A1 (en) * 1994-07-06 1996-01-10 NUOVO PIGNONE S.p.A. Improved by-pass valve for a fluid-supply group, in particular fuels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131215A (en) * 1977-07-05 1978-12-26 Sun Oil Company Of Pennsylvania Dispenser with additive option
WO1986004828A1 (en) * 1985-02-15 1986-08-28 Oy Hackman Ab Procedure and means for use in pumping and volumetry of foodstuff liquids
WO1992012093A1 (en) * 1991-01-11 1992-07-23 Facet Quantek, Inc. Liquid fuel dispensing system with improved means of preventing contamination
US5312552A (en) * 1993-02-02 1994-05-17 Norman J M Method and apparatus for removing BTX-type gases from a liquid
EP0691304A1 (en) * 1994-07-06 1996-01-10 NUOVO PIGNONE S.p.A. Improved by-pass valve for a fluid-supply group, in particular fuels

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102700740A (en) * 2012-05-20 2012-10-03 烟台卓越生物技术有限责任公司 Filling device capable of filling various liquid simultaneously
CN102700740B (en) * 2012-05-20 2013-12-18 烟台卓越生物技术有限责任公司 Filling device capable of filling various liquid simultaneously
GB2537100A (en) * 2015-03-23 2016-10-12 Great Clarity Ltd Dispensing apparatus
US10414381B2 (en) * 2015-05-22 2019-09-17 Hightech Solutions Nyc, Llc System for optimizing the use and the income generation by a service station of washing fluids
US11034334B2 (en) * 2015-05-22 2021-06-15 Hightech Solutions Nyc, Llc System for optimizing the use and the income generation by a service station of washing fluids

Also Published As

Publication number Publication date
NO983944D0 (en) 1998-08-27
NO983944L (en) 2000-02-28
AU5538899A (en) 2000-03-21

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