GB2130910A - Additive supply apparatus for use in a fluid supply line - Google Patents
Additive supply apparatus for use in a fluid supply line Download PDFInfo
- Publication number
- GB2130910A GB2130910A GB08325675A GB8325675A GB2130910A GB 2130910 A GB2130910 A GB 2130910A GB 08325675 A GB08325675 A GB 08325675A GB 8325675 A GB8325675 A GB 8325675A GB 2130910 A GB2130910 A GB 2130910A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supply apparatus
- additive
- additive supply
- valve
- container
- 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.)
- Granted
Links
- 239000000654 additive Substances 0.000 title claims abstract description 42
- 230000000996 additive effect Effects 0.000 title claims abstract description 42
- 239000012530 fluid Substances 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- 239000004816 latex Substances 0.000 claims description 4
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 29
- 239000012141 concentrate Substances 0.000 abstract description 27
- 239000000945 filler Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/71805—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/008—Making of fire-extinguishing materials immediately before use for producing other mixtures of different gases or vapours, water and chemicals, e.g. water and wetting agents, water and gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
- B01F25/3111—Devices specially adapted for generating foam, e.g. air foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/712—Feed mechanisms for feeding fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/714—Feed mechanisms for feeding predetermined amounts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7176—Feed mechanisms characterised by the means for feeding the components to the mixer using pumps
- B01F35/71761—Membrane pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/718—Feed mechanisms characterised by the means for feeding the components to the mixer using vacuum, under pressure in a closed receptacle or circuit system
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/006—Control of flow ratio involving a first fluid acting on the feeding of a second fluid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The apparatus, which is of particular use in adding foam concentrate to the water supply line of a fire appliance, may comprise a Venturi (1, Fig. 1) installed in the line, in communication with additive containers (15, 16) via line 4 which preferably includes a control valve (10) and non return valve (11). The additive is preferably expelled from each of the containers (15, 16) by an expansible member e.g. bellows (17) which is inflated with fluid via line (12). Valve (5) allows the containers (15, 16) to be selectively connected with the Venturi (1). Alternatively a foam container 30 (Fig. 2) may be connected to the pump chamber (39) of the appliance's water pump via a pipe line (34, 36, 38) incorporating on/off and flow control valves (35, 37). The container (30) may be pressurised by the air brake system of the vehicle to introduce the foam into the water as water passes through the pump. <IMAGE>
Description
SPECIFICATION
Additive supply apparatus for use in a fluid supply line
The present invention relates to an additive supply apparatus for use in a fluid supply line.
In fighting fires, it is the common practice to direct a jet of water, usually from a hose, at the source of the flames. It is also known, particularly with oil based fires, to smother the fire with foam in order to isolate the source of the flames from the oxygen of the surrounding atmosphere.
A new method of fire-fighting has now been devised in which a foam concentrate in the form of a film-forming fluoroprotein (FFFP) is added to a water supply which is then directed at the source of the flames in the normal way. The concentrate is currently added by dumping a predetermined quantity of the concentrate from a header tank into a water tank containing a predetermined quantity of water and then pumping the resultant mixture through the hose.
Although this method is satisfactory, it can be awkward to implement in practice and is therefore inefficient and uneconomic.
According to the present invention, there is provided additive supply apparatus for use in a fluid supply line comprising a housing defining a mixing chamber adapted to be connected in the line, a container for additive to be supplied, means for connecting the container to the mixing chamber and means for enabling additive to be discharged from the container to the mixing chamber via the connecting means.
A preferred embodiment of the invention may comprise any of the following advantageous features:
(a) Control means are provided for controlling the supply rate of additive from the container,
(b) The control means of (a) comprises a valve disposed in the means for connecting,
(c) The valve of (b) is a needle valve,
(d) The mixing chamber forms part of a Venturi which is adapted to be connected in the line,
(e) Means are provided for preventing the transmission of back pressure from the mixng chamber to the container,
(f) The means for preventing transmission of back pressure comprise a non-return valve,
(g) The means for enabling material to be discharged comprises an expandible member in the container,
(h) The expandible member of (g) is adapted to be connected to the supply line to provide pressure to expand it,
(i) The expandible member of (g) is a bellows,
(j) The expandible member of (g) is a bag,
(k) The material of the bag of (j) is latex, neoprene naturai rubber or any similar flexible chemically inert material,
(I) A duplicate container for additive to be supplied is provided and both containers are connected via the means for connecting and a selector valve to the mixing chamber.
In one application of the invention, the fluid supply line is a hose forming part of fire fighting equipment and the material to be supplied is a foam concentrate.
In order that the invention may be more fully understood, two embodiments thereof wil now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 shows a water pressurised in-line foam inductor for a fire fighting hose and
Figure 2 shows an air pressurised in-line foam supply for a fire fighting hose.
Referring to the drawing, the additive supply apparatus comprises a Venturi 1 which is connected into a hose 2. The central throat section of the Venturi forms a mixing chamber 3.
This mixing chamber 3 is connected via a duct 4, a selector valve 5, and respective ducts 6 and 7 to two foam concentrate containers 8 and 9. A needle valve 10 and non-return valve 11 are also disposed in the duct. The selector valve 5 is also connected to the hose 2 upstream of the Venturi 1 by means of a duct 12.
Each foam concentrate container 8, 9 comprises a substantially cylindrical housing 15, 1 6 which houses a bellows 17, 1 8. Bellows 1 7 is shown substantially fully extended and bellows 18 substantially fully collapsed. The interior of bellows 17, 1 8 are connected to respective water supply ducts 1 9 and 20 which are connected to exhaust via respective drain valves 20 and 21 and to the duct 1 2 via the selector valve 5.
The above described foam supply apparatus operates as follows. As water flows through the
Venturi 1 (from right to left on the drawing), foam concentrate supplied via duct 4 is mixed with the water in the mixing chamber 3. This induction of foam concentrate into the chamber 3 and its subsequent mixing with the water in the chamber is promoted by two factors. First of all, the Venturi 1 causes a pressure drop in the stream of water flowing through it in the chamber which constitutes the throat of the Venturi and secondly the foam concentrate supply lines are pressurized through the action of the bellows 1 7 and 18 on the concentrates in the respective chambers.The amount of concentrate inducted into the water stream may be varied by appropriately controlling the needle valve 1 0. The non-return valve 11 prevents any back pressure from the water stream in the hose 2 being applied to the concentrate containers 8 and 9. These containers 8 and 9 will normally be used alternatively by appropriately controlling the selector valve 5. In the position shown, the position of the selector valve is such as to connect the container 8 to the duct 4 and to break any connection between the valve and the container 9.Container 8 is almost exhausted of concentrate and when substantially exhausted, the selector valve may manually or automatically be changed over to break the connection between the container 8 and the duct 4 and establish a connection between the container 9 and the duct 4 so that there is no brake in the supply of concentrate. When the connection to container 8 is broken, the water in the bellows 17 may be drained away via the valve 21 to permit the bellows to collapse and to enable that container once again to be charged with concentrate via the container filler 23. When the foam concentrate contents have been substantially emptied from container 9 by means of the mainline water pressure applied via selector valve 5 duct 20 and bellows 1 8, a change-over back to container 8 will then be made and so on.In this way foam concentrate can be continuously supplied to the water stream passing through the hose 2. With a foam concentrate known as Petraseal, optimum results have been obtained with 3% concentrate to 97% water.
Referring to Figure 2, an alternative system is shown for a motorised fire appliance in-which the air brake system of teh appliance is used to pressurise a foam concentrate tank 30 protected by an ON/OFF valve. This tank 30, which may be supplied with foam concentrate via a filler cap 31, is connected to the air brake supply via a nonreturn valve 32 and an air reducing valve 33. This valve 33 reduces the air pressure down to 40 psi from the air brake system pressure.
The outlet from the foam concentrate tank 30 leads via a pipe 34 to a three port foam valve 35.
The outlet from valve 35 leads via a pipe 36 to a flow control valve 37. The outlet from valve 37 leads via a pipe 38 to the chamber 39 of the water pump of the fire appliance. Connection of pipe 38 to chamber 39 is by means of a tapped connection in the casing of the pump adjacent the pump eye. The pump chamber 39 has an inlet port 40, which is connected to the water tank of the appliance, outlet ports 41 for the main jets and an outlet port 42 for connection to the hose reels.
A further pipe 43 leads from the pump chamber via a non-return valve 44 to a by-pass valve 45. A port of this bypass valve 45 is connected via a pipe 46 to an appliance unloader valve and another port of the valve 45 is connected to the appliance water tank. The bypass valve, which operates to prevent excessive pressure build up in the pump, is mechanically connected to the foam valve 35 lever to lever. When the foam valve 35 is switched off, being mechanically inter-connected to the by-pass valve 45, it switches the by-pass valve 45 on, thus eliminating any chance of the foam concentrate entering the appliance water tank under pressure.
In operation of the arrangement of Figure 2, foam concentrate, which may be AFFF Aqueous
Film Forming Foam 1%, 3% or 6% concentration of FFFP, Film Forming Fluoroprotein, is metered in a pre-determined amount from the foam concentrate tank 30 under pressure into water at the suction side of the pump chamber 39 and discharged through the pump into either hosereels or main jet hoses, when the foam valve 35 is opened.
It will be appreciated that the above embodiments have been described by way of example only and that many variations are possible without departing from the scope of the invention. For example, in the embodiment of
Figure 1 ,the bellows 17 and 18 may be replaced by an expandible latex bag. Also, in a less complicated arrangement, only a single foam concentrate container may be provided. With such an arrangement, the selector valve 5 could be replaced with a single way on/off valve. The above mentioned latex bag may alternatively be made of neoprene, natural rubber or any similar flexible chemically inert material.
Claims (24)
1. Additive supply apparatus for use ina fluid supply line comprising a housing defining a mixing chamber adapted to be connected in the line, a container for additive to be supplied, means for connecting the container to the mixing chamber and means for enabling additive to be discharged from the container to the mixing chamber via the connecting means.
2. Additive supply apparatus as claimed in claim 1, in which control means are provided for controlling the supply rate of additive from the container.
3. Additive supply apparatus as claimed in claim 2, in which the control means compr; valve disposed in the means for connecting.
4. Additive supply apparatus as claimed in claim 3, in which the valve is a needle valve.
5. Additive supply apparatus as claimed in claim 1, 2 or 3, in which the mixing chamber forms part of a Venturi which is adapted to be connected in the line.
6. Additive supply apparatus as claimed in any preceding claim, in which means are provided for preventing the transmission of back pressure from: the mixing chamber to the container.
7. Additive supply apparatus as claimed in claim 6, in which the means for preventing transmission of back pressure comprise a nonreturn valve.
8. Additive supply apparatus as claimed in any preceding claim, in which the means for enabling material to be discharged comprises an expandible member in the container.
9. Additive supply apparatus as claimed in claim 8, in which the expandible member is adapted to be connected to the supply line to provide pressure to expand it.
10. Additive supply apparatus as claimed in claim 8, in which the expandible member is a bellows.
11. Additive supply apparatus as claimed in claim 8, in which the expandible member is a bag.
12. Additive supply apparatus as claimed in claim 11, in which the material of the bag is latex, neoprene natural rubber or any similar flexible chemically inert material.
13. Additive supply apparatus as claimed in any preceding claim, in which a duplicate container for additive to be supplied is provided and both containers are connected via the means for connecting and a selector valve to the mixing chamber.
14. Additive supply apparatus as claimed in claim 1, in which the mixing chamber comprises the chamber of a pump.
1 5. Additive supply apparatus as claimed in claim 14, in which the pump is the water pump of a fire appliance.
1 6. Additive supply apparatus as claimed in claim 14 or 15, in which the means for enabling additive to be discharged comprises a source of compressed air.
1 7. Additive supply apparatus as claimed in claim 16 when appendant to claim 15, in which the source of compressed air is the air brake system of the appliance.
18. Additive supply apparatus as claimed in any of claims 14 to 1 7, in which a container for additive is connected to the mixing chamber via a pipeline.
1 9. Additive supply apparatus as claimed in claim 18, in which an additive flow control valve is disposed in the pipeline.
20. Additive supply apparatus as claimed in claim 1 8 or 19, in which an on/off valve is disposed in the pipeline.
21. Additive supply apparatus as claimed in any of claims 14 to 20, in which an outlet port from the pump chamber is connected to a line having a bypass valve to prevent excessive pressure build-up in the pump chamber.
22. Additive supply apparatus as claimed in claim 21, when appendant to claim 20, in which the on/off valve is mechanically connected to the bypass valve so that when the bypass valve is open the on/off valve is closed and vice-versa.
23. Additive supply apparatus as claimed in claim 20, 21 or 22, in which a non-return valve is incorporated in line having the bypass valve.
24. Additive supply apparatus substantially as hereinbefore described with reference to Figure 1 or Figure 2 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08325675A GB2130910B (en) | 1982-09-25 | 1983-09-26 | Additive supply apparatus for use in a fluid supply line |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8227433 | 1982-09-25 | ||
| GB08325675A GB2130910B (en) | 1982-09-25 | 1983-09-26 | Additive supply apparatus for use in a fluid supply line |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8325675D0 GB8325675D0 (en) | 1983-10-26 |
| GB2130910A true GB2130910A (en) | 1984-06-13 |
| GB2130910B GB2130910B (en) | 1987-03-18 |
Family
ID=26283947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08325675A Expired GB2130910B (en) | 1982-09-25 | 1983-09-26 | Additive supply apparatus for use in a fluid supply line |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2130910B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2304043A (en) * | 1995-08-08 | 1997-03-12 | Pierre Desire Francois Lecanu | Tank for a doped water installation for a fire-fighting installation |
| EP1147788A3 (en) * | 2000-03-21 | 2002-06-12 | Vigh, Andreas, Dipl.-Ing. (FH) | Admixing device with or without the use of compressed air arranged on the pump pressure side |
| FR2873172A1 (en) * | 2004-07-15 | 2006-01-20 | Dosatron Internat Sa | DOSING DEVICE FOR INTRODUCING AN ADDITIVE INTO A LIQUID CURRENT |
| WO2009051501A1 (en) * | 2007-10-16 | 2009-04-23 | Methven Limited | A dispenser and a method of filling a liquid additive container |
| WO2009109354A1 (en) * | 2008-03-06 | 2009-09-11 | Alfred Kärcher Gmbh & Co. Kg | Method, mixing system, and device for generating a disinfectant foam |
| CN103736416A (en) * | 2011-12-31 | 2014-04-23 | 肇庆市京欧机械制造有限公司 | Vacuum yeast sucking machine |
| WO2022245200A1 (en) | 2021-05-17 | 2022-11-24 | Saval B.V. | Device and method for producing a mixture |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1051306A (en) * | 1900-01-01 | |||
| GB831720A (en) * | 1958-09-23 | 1960-03-30 | Kronenburg N V Geb | Improvements in or relating to fire extinguishing installations |
| GB914801A (en) * | 1958-01-14 | 1963-01-02 | Rogor Strange Waddington | Improvements in or relating to liquid mixing apparatus |
| GB1017786A (en) * | 1963-02-23 | 1966-01-19 | Peter Foerstner | Improvements in or relating to apparatus for mixing fluids |
| GB1033147A (en) * | 1962-01-02 | 1966-06-15 | Chemetron Corp | Assembly for proportioning liquids |
| GB1062263A (en) * | 1963-05-29 | 1967-03-22 | Laycock Eng Ltd | Improvements in apparatus for mixing liquids |
| GB1218521A (en) * | 1968-01-31 | 1971-01-06 | Steinkohlen Elek Zitat Ag | A process for extinguishing fires involving synthetic resins containing halogens |
| GB1320746A (en) * | 1970-12-02 | 1973-06-20 | Chubb Fire Security Ltd | Apparatus for introducing foam-stabilising solutions into water streams |
| GB1417383A (en) * | 1973-06-22 | 1975-12-10 | Albach A F | Admixing apparatus for fire-fighting by means of foam |
| GB1603269A (en) * | 1977-06-10 | 1981-11-25 | Colgate Samuel | Apparatus and method for inserting an additive liquid into a flowing fluid and discharging the resultant mixture |
| GB2076679A (en) * | 1980-05-24 | 1981-12-09 | Total Foerstner Gmbh & Co | Liquid admixing device |
-
1983
- 1983-09-26 GB GB08325675A patent/GB2130910B/en not_active Expired
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1051306A (en) * | 1900-01-01 | |||
| GB914801A (en) * | 1958-01-14 | 1963-01-02 | Rogor Strange Waddington | Improvements in or relating to liquid mixing apparatus |
| GB831720A (en) * | 1958-09-23 | 1960-03-30 | Kronenburg N V Geb | Improvements in or relating to fire extinguishing installations |
| GB1033147A (en) * | 1962-01-02 | 1966-06-15 | Chemetron Corp | Assembly for proportioning liquids |
| GB1017786A (en) * | 1963-02-23 | 1966-01-19 | Peter Foerstner | Improvements in or relating to apparatus for mixing fluids |
| GB1062263A (en) * | 1963-05-29 | 1967-03-22 | Laycock Eng Ltd | Improvements in apparatus for mixing liquids |
| GB1218521A (en) * | 1968-01-31 | 1971-01-06 | Steinkohlen Elek Zitat Ag | A process for extinguishing fires involving synthetic resins containing halogens |
| GB1320746A (en) * | 1970-12-02 | 1973-06-20 | Chubb Fire Security Ltd | Apparatus for introducing foam-stabilising solutions into water streams |
| GB1417383A (en) * | 1973-06-22 | 1975-12-10 | Albach A F | Admixing apparatus for fire-fighting by means of foam |
| GB1603269A (en) * | 1977-06-10 | 1981-11-25 | Colgate Samuel | Apparatus and method for inserting an additive liquid into a flowing fluid and discharging the resultant mixture |
| GB2076679A (en) * | 1980-05-24 | 1981-12-09 | Total Foerstner Gmbh & Co | Liquid admixing device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2304043A (en) * | 1995-08-08 | 1997-03-12 | Pierre Desire Francois Lecanu | Tank for a doped water installation for a fire-fighting installation |
| GB2304043B (en) * | 1995-08-08 | 1999-04-21 | Pierre Desire Francois Lecanu | Tank for a doped water installation for a fire-fighting installation |
| EP1147788A3 (en) * | 2000-03-21 | 2002-06-12 | Vigh, Andreas, Dipl.-Ing. (FH) | Admixing device with or without the use of compressed air arranged on the pump pressure side |
| FR2873172A1 (en) * | 2004-07-15 | 2006-01-20 | Dosatron Internat Sa | DOSING DEVICE FOR INTRODUCING AN ADDITIVE INTO A LIQUID CURRENT |
| WO2006016032A1 (en) * | 2004-07-15 | 2006-02-16 | Dosatron International | Dosing device for introducing an additive into a liquid flow |
| WO2009051501A1 (en) * | 2007-10-16 | 2009-04-23 | Methven Limited | A dispenser and a method of filling a liquid additive container |
| WO2009109354A1 (en) * | 2008-03-06 | 2009-09-11 | Alfred Kärcher Gmbh & Co. Kg | Method, mixing system, and device for generating a disinfectant foam |
| CN103736416A (en) * | 2011-12-31 | 2014-04-23 | 肇庆市京欧机械制造有限公司 | Vacuum yeast sucking machine |
| WO2022245200A1 (en) | 2021-05-17 | 2022-11-24 | Saval B.V. | Device and method for producing a mixture |
| NL1044031B1 (en) | 2021-05-17 | 2022-12-02 | Saval B V | Apparatus and method for producing a mixture |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2130910B (en) | 1987-03-18 |
| GB8325675D0 (en) | 1983-10-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980926 |