US3224637A - Admixing apparatus - Google Patents

Admixing apparatus Download PDF

Info

Publication number
US3224637A
US3224637A US390106A US39010664A US3224637A US 3224637 A US3224637 A US 3224637A US 390106 A US390106 A US 390106A US 39010664 A US39010664 A US 39010664A US 3224637 A US3224637 A US 3224637A
Authority
US
United States
Prior art keywords
pipe
admixing
containers
additive
valves
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.)
Expired - Lifetime
Application number
US390106A
Inventor
Muller Bernhard
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
Application granted granted Critical
Publication of US3224637A publication Critical patent/US3224637A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/30—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the first liquid or other fluent material being fed by gravity, or sucked into the carrying fluid
    • 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
    • B01F25/315—Injector mixers in conduits or tubes through which the main component flows wherein a difference of pressure at different points of the conduit causes introduction of the additional component into the main component
    • 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

Definitions

  • This invention relates to improvements in devices for the admixing of a liquid additive to a main medium which is flowing under pressure and comes from an admixing container disposed in a subsidiary pipe leading to a venturi insert in a main pipe and branched off from the main pipe before the insert, wherein, after the displacement of the admixing medium out of the admixing container, due to the using-up of the supply, a shut-off valve is actuated in the subsidiary pipe.v
  • the present invention relates to improvements in devices of the aforesaid type in which two admixing containers are connected parallel to each other in the subsidiary pipe and the shut-off valves associated with them are designed as alternatingly influencing changeover valves and in which, if the supply in one of the admixing containers is about to be exhausted, the other container is connected to the venturi insert, so that the empty container can be replenished.
  • a device provided according to the present invention is such that it requires no supervision due to an arrangement whereby replenishment is automatically effected in accordance with change-over from one admixing container to the other.
  • the device of the present invention is characterised in that each of the compartments of the two admixing containers containing the medium to be admixed is connected to a replenishing container via a pipe in which there is disposed a valve (replenishment valve) controllable in such manner that it is closed in the admixing position in which the admixing container associated with it is connected via the opened, associated shutoff valve to the venturi insert.
  • the replenishing valves are non-return valves.
  • This arrangement has, inter alia, the advantage that a larger but simply-designed storage container can be used together with small admixing containers.
  • the main medium flows through a main pipe 1 and may, for example, be extinguishing water in a fire extinguisher or a fire extinguishing plant which is to have a foaming agent mixed with it as an admixing agent, the water flowing through a venturi insert 2 in the main pipe.
  • the branches 19m and 19b of the subsidiary pipe open out into the admixing containers each of which is subdivided by a diaphragm 6a or 6b into a chamber 16a or 16b for the admixing medium and a water chamber 15a or 15b for the main medium, said branches opening into the main medium chambers in each case.
  • each of the admixing medium chambers 3,224,637 Patented Dec. 21, 1965 is a pipe 8a or 8b these being both inlet and also outlet pipes. It is not necessary to provide a separate filling inlet.
  • the pipes 8a and 8b are divided up at 20a or 20b into the pipes 21a and 22a or 21b and 22b.
  • the pipes 21 lead, via valves 9a which are locked relatively to each other, i.e. which alternatingly open and close, into the common pipe 10 which opens into the venturi insert 2.
  • the pipes 22 lead, via valves 23a and 23b into a common pipe 24 which obtains the admixing medium .from a high-level container 25 and feeds it to the chambers 16 via the pipes 22 and 8.
  • valves 23 may be so locked relatively to each other that one closes when the other opens, and vice versa. It will suflice also to provide simple nonreturn valves which allow the passage of the admixing medium out of the container 25 only in the direction of the chamber 16.
  • Each of the four chambers 15 and 16 has also a manually actuated venting valve 26a and 27a or 26b and 27b leading to the exterior.
  • a pipe 28a and 28b As a third pipe, there is connected to each of the two three-way valves 4a and 4b a pipe 28a and 28b, operating as a discharge pipe. These pipes 28a and 28b open out into a discharge arrangement 29, which is a vessel open at the top and having an overflow 30.
  • Each admixing medium chamber has a sensing means 12a or 12b which supplies a signal when the resilient diaphragm 6 of the chamber concerned has been deformed to such an extent that it contacts the sensing means. This occurs when the diaphragm subjected to the pressure of the main medium in the chamber 15 has to a considerable extent displaced the admixing medium out of the chamber 16 and has thereby sufficiently diminished the size of the chamber 16.
  • the control of the valves 9 and 4 and where appropriate also 23 influenced by the sensing means 12 may be electrical, hydraulic, pneumatic or even mixed control arrangements. In general, the electrical control method is preferred. It will, however, be unnecessary to give a more detailed description of this control arrangement, since a person skilled in the art will experience no difliculty therewith.
  • the admixing medium has just been displaced out of the chamber 16a such as is effected when the pressure liquid in the pipe 1 presses, via the pipe 3 and the valve 4a through the branch 18 and pipe 19a into the chamber 15a.
  • the non-return valve 23a prevents return flow to the container 25.
  • the admixture medium flows via the pipe 8a and the branch 20a through the valve 9a which is now open in the pipe 21a and from there through the pipe 10 into the venturi insert 2.
  • the path to branch 20b is blocked by the valve 9b which is at this time closed.
  • the valve 4b is so disposed that it opens a path from the chamber 15b to the discharge pipe 28b, but blocks the path between the branch 18 and pipe 28b.
  • the container 5b is separated from the pressure pipe 3 by the valve 4b and by the valve 9b from the admixing container 5a.
  • the free discharge passage has been opened in the chamber 15b, so that the admixing medium from the high-level container 25 flows via the pipe 24 and the non-return valve 23b, which is now open, into the chamber 16b and, by the means of the diaphragm 6b, expels the water which is now no longer subjected to pressure out of the chamber 15b to the discharge arrangement 28b, 29.
  • the sensing means 12a When the sensing means 12a responds, because the diaphragm 6a presses against it, it switches over the valves 4a, 4b and 9a for example electrically by means of a relay, or in some other known manner.
  • the valves 9a and 9b can of course also be combined to form a switch over valve for example in the form of a three-way valve. Due to this switch-over, the elements of the arrangement designated by the index a exchange their function with those having the index b.
  • the admixing medium is then expelled from the chamber 16b into the pipe 10, whereas further admixing medium flows from the container 25 into the chamber 16a and is there stored until the next change-over takes place.
  • the pressure water from the pipe 3 flows into the chamber 151;, whereas the pressureless water from the chamber 15a flows via the valve 4a into the discharge arrangement 29.
  • the manually actuated venting valves 26 and 27 permit initiating the operations.
  • valves 9a and 9b should be electrically controlled. If they are designed as non-return valves having a corresponding through-flow direction, it will sufiice simply to reverse the valves 4a and 4b.
  • any possibility is prevented of air being drawn into a chamber 15 after the emptying of the said chamber and via the associated pipes 28 and 19, so that adequate pressure can no longer build up therein and the admixing medium flows out of the admixing medium chamber of the other container, via the corresponding non-return valve 9, into the admixing pipe 10.
  • Apparatus for admixing a liquid additive to a principal liquid comprising a pipe for conveying said principal liquid under pressure, a source of said additive, first and second containers adapted to receive additive from said source, valve means for selectively and alternately coupling said containers to said pipe and to said source, pressure responsive means operatively coupled to said containers and to said pipe to respond to the pressure of the principal liquid in the pipe to urge additive from the containers via said valve means into said pipe, and sensing means to sense the exhausting of additive from said containers and to control said valve means so that one container is being filled from said source while additive is dispensed by the other container into said pipe.
  • Apparatus as claimed in claim 1, comprising venting means on the containers to enable filling the same with said additive.
  • said sensing means includes means to sense displacement of said diaphragms.
  • valve means includes a first pair of valves coupling said source to respective of said containers.
  • valve means includes a second pair of valve alternately connecting the containers to the pipe for alternative discharge of additive into the latter.
  • said pressure responsive means further comprises a subsidiary pipe connected to the first said pipe and including two branches, said control means connecting said branches to respective compartments in said containers and selectively coupling the latter said compartments to discharge and to said branches.
  • control means are three-way valves.
  • Apparatus as claimed in claim 8, wherein the first pair of valves are interchangably opened and closed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Description

ADMIXING APPARATUS Filed Aug. 17, 1964 CONTROL.
CONTROL CONTROL CONTROL VALVES g VALVES 23 VA LVE8 4 United States Patent T 12 Claims. (01. 222-s7 This invention relates to devices for mixing liquids and the like.
This invention relates to improvements in devices for the admixing of a liquid additive to a main medium which is flowing under pressure and comes from an admixing container disposed in a subsidiary pipe leading to a venturi insert in a main pipe and branched off from the main pipe before the insert, wherein, after the displacement of the admixing medium out of the admixing container, due to the using-up of the supply, a shut-off valve is actuated in the subsidiary pipe.v
Further, the present invention relates to improvements in devices of the aforesaid type in which two admixing containers are connected parallel to each other in the subsidiary pipe and the shut-off valves associated with them are designed as alternatingly influencing changeover valves and in which, if the supply in one of the admixing containers is about to be exhausted, the other container is connected to the venturi insert, so that the empty container can be replenished.
A device provided according to the present invention is such that it requires no supervision due to an arrangement whereby replenishment is automatically effected in accordance with change-over from one admixing container to the other. The device of the present invention is characterised in that each of the compartments of the two admixing containers containing the medium to be admixed is connected to a replenishing container via a pipe in which there is disposed a valve (replenishment valve) controllable in such manner that it is closed in the admixing position in which the admixing container associated with it is connected via the opened, associated shutoff valve to the venturi insert. According to a preferred embodiment, the replenishing valves are non-return valves.
This arrangement has, inter alia, the advantage that a larger but simply-designed storage container can be used together with small admixing containers.
Further features of the invention and further advantages thereof will be disclosed in the following detailed description, reference being made to the drawing, wherein the sole figure shows, in diagrammatic form, one of the possible embodiments of the invention.
In the drawing, the main medium flows through a main pipe 1 and may, for example, be extinguishing water in a fire extinguisher or a fire extinguishing plant which is to have a foaming agent mixed with it as an admixing agent, the water flowing through a venturi insert 2 in the main pipe.
Before the venturi insert, as seen in the direction of flow, there branches off from the main pipe 1 a subsidiary pipe 3 which divides up at 18 in order to be. connected to the two admixing containers 5a and 5b.
Between the containers 5a and 5b and the pipe branch 18, there is in each case an electrically reversible threeway valve 4a and 4b. The branches 19m and 19b of the subsidiary pipe open out into the admixing containers each of which is subdivided by a diaphragm 6a or 6b into a chamber 16a or 16b for the admixing medium and a water chamber 15a or 15b for the main medium, said branches opening into the main medium chambers in each case.
Connected to each of the admixing medium chambers 3,224,637 Patented Dec. 21, 1965 is a pipe 8a or 8b these being both inlet and also outlet pipes. It is not necessary to provide a separate filling inlet. The pipes 8a and 8b are divided up at 20a or 20b into the pipes 21a and 22a or 21b and 22b. The pipes 21 lead, via valves 9a which are locked relatively to each other, i.e. which alternatingly open and close, into the common pipe 10 which opens into the venturi insert 2. The pipes 22 lead, via valves 23a and 23b into a common pipe 24 which obtains the admixing medium .from a high-level container 25 and feeds it to the chambers 16 via the pipes 22 and 8. The valves 23 may be so locked relatively to each other that one closes when the other opens, and vice versa. It will suflice also to provide simple nonreturn valves which allow the passage of the admixing medium out of the container 25 only in the direction of the chamber 16.
Each of the four chambers 15 and 16 has also a manually actuated venting valve 26a and 27a or 26b and 27b leading to the exterior.
As a third pipe, there is connected to each of the two three-way valves 4a and 4b a pipe 28a and 28b, operating as a discharge pipe. These pipes 28a and 28b open out into a discharge arrangement 29, which is a vessel open at the top and having an overflow 30.
Each admixing medium chamber has a sensing means 12a or 12b which supplies a signal when the resilient diaphragm 6 of the chamber concerned has been deformed to such an extent that it contacts the sensing means. This occurs when the diaphragm subjected to the pressure of the main medium in the chamber 15 has to a considerable extent displaced the admixing medium out of the chamber 16 and has thereby sufficiently diminished the size of the chamber 16.
The control of the valves 9 and 4 and where appropriate also 23 influenced by the sensing means 12 may be electrical, hydraulic, pneumatic or even mixed control arrangements. In general, the electrical control method is preferred. It will, however, be unnecessary to give a more detailed description of this control arrangement, since a person skilled in the art will experience no difliculty therewith.
To indicate how the apparatus works, it will next be assumed that the admixing medium has just been displaced out of the chamber 16a such as is effected when the pressure liquid in the pipe 1 presses, via the pipe 3 and the valve 4a through the branch 18 and pipe 19a into the chamber 15a. The non-return valve 23a prevents return flow to the container 25. Thus, the admixture medium flows via the pipe 8a and the branch 20a through the valve 9a which is now open in the pipe 21a and from there through the pipe 10 into the venturi insert 2. The path to branch 20b is blocked by the valve 9b which is at this time closed.
At the same time, the valve 4b is so disposed that it opens a path from the chamber 15b to the discharge pipe 28b, but blocks the path between the branch 18 and pipe 28b. Thus, the container 5b is separated from the pressure pipe 3 by the valve 4b and by the valve 9b from the admixing container 5a. Furthermore, the free discharge passage has been opened in the chamber 15b, so that the admixing medium from the high-level container 25 flows via the pipe 24 and the non-return valve 23b, which is now open, into the chamber 16b and, by the means of the diaphragm 6b, expels the water which is now no longer subjected to pressure out of the chamber 15b to the discharge arrangement 28b, 29.
When the sensing means 12a responds, because the diaphragm 6a presses against it, it switches over the valves 4a, 4b and 9a for example electrically by means of a relay, or in some other known manner. The valves 9a and 9b can of course also be combined to form a switch over valve for example in the form of a three-way valve. Due to this switch-over, the elements of the arrangement designated by the index a exchange their function with those having the index b. The admixing medium is then expelled from the chamber 16b into the pipe 10, whereas further admixing medium flows from the container 25 into the chamber 16a and is there stored until the next change-over takes place. The pressure water from the pipe 3 flows into the chamber 151;, whereas the pressureless water from the chamber 15a flows via the valve 4a into the discharge arrangement 29.
The manually actuated venting valves 26 and 27 permit initiating the operations.
It is not entirely necessary that the valves 9a and 9b should be electrically controlled. If they are designed as non-return valves having a corresponding through-flow direction, it will sufiice simply to reverse the valves 4a and 4b.
By means of the design of the discharge arrangement discussed here, any possibility is prevented of air being drawn into a chamber 15 after the emptying of the said chamber and via the associated pipes 28 and 19, so that adequate pressure can no longer build up therein and the admixing medium flows out of the admixing medium chamber of the other container, via the corresponding non-return valve 9, into the admixing pipe 10.
I claim:
1. Apparatus for admixing a liquid additive to a principal liquid, said apparatus comprising a pipe for conveying said principal liquid under pressure, a source of said additive, first and second containers adapted to receive additive from said source, valve means for selectively and alternately coupling said containers to said pipe and to said source, pressure responsive means operatively coupled to said containers and to said pipe to respond to the pressure of the principal liquid in the pipe to urge additive from the containers via said valve means into said pipe, and sensing means to sense the exhausting of additive from said containers and to control said valve means so that one container is being filled from said source while additive is dispensed by the other container into said pipe.
2. Apparatus as claimed in claim 1, comprising venting means on the containers to enable filling the same with said additive.
3. Apparatus as claimed in claim 1, wherein the pressure responsive means includes a diaphragm on each container dividing the latter into compartments into one of which flows said principal medium, said apparatus further comprising control means to discharge the principal medium from the compartment containing the same as the corresponding compartment is being filled withadditive.
4. Apparatus as claimed in claim 2 wherein said sensing means includes means to sense displacement of said diaphragms.
5. Apparatus as claimed in claim 4, wherein said valve means includes a first pair of valves coupling said source to respective of said containers.
6. Apparatus as claimed in claim 5, wherein said valve means includes a second pair of valve alternately connecting the containers to the pipe for alternative discharge of additive into the latter.
7. Apparatus as claimed in claim 6, wherein said pressure responsive means further comprises a subsidiary pipe connected to the first said pipe and including two branches, said control means connecting said branches to respective compartments in said containers and selectively coupling the latter said compartments to discharge and to said branches.
8. Apparatus as claimed in claim 7, wherein the control means are three-way valves.
9. Apparatus as claimed in claim 18, wherein the first pair of valves are one-way valves.
10. Apparatus as claimed in claim 8, wherein the second pair of valves are one-way valves.
11. Apparatus: as claimed in claim 8, wherein the first pair of valves are interchangably opened and closed.
12. Apparatus as claimed in claim 8, wherein the second pair of valves are interchangeably opened and closed.
References Cited by the Examiner UNITED STATES PATENTS 1,875,023 8/1932 Krueger -e 222386.5 X 2,819,679 1/1958 Wilson 222386.5 X 3,166,096 1/1964 Lang 222386.5 X
LOUIS J. DEMBO, Primary Examiner.
HADD S. LANE, Examiner.

Claims (1)

1. APPARATUS FOR ADMIXING A LIQUID ADDITIVE TO A PRINCIPAL LIQUID, SAID APPARATUS COMPRISING A PIPE FOR CONVEYING SAID PRINCIPAL LIQUID UNDER PRESSURE, A SOURCE OF SAID ADDITIVE, FIRST AND SECOND CONTAINERS ADAPTED TO RECEIVE ADDITIVE FROM SAID SOURCE, VALVE MEANS FOR SELECTIVELY AND ALTERNATELY COUPLING SAID CONTAINERS TO PIPE AND TO SAID SOURCE, PRESSURE RESPONSIVE MEANS OPERATIVELY COUPLED TO SAID CONTAINERS AND TO SAID PIPE TO RESPOND TO THE PRESSURE OF THE PRINCIPAL LIQUID IN THE PIPE TO URGE ADDITIVE FROM THE CONTAINERS VIA SAID VALVE MEANS INTO SAID PIPE, AND SENSING MEANS TO SENSE THE EXHAUSTING OF ADDITIVE FROM SAID CONTAINERS AND TO CONTROL SAID VALVE MEANS SO THAT ONE CONTAINER IS BEING FILLED FROM SAID SOURCE WHILE ADDITIVE IS DISPENSED BY THE OTHER CONTAINER INTO SAID PIPE.
US390106A 1963-08-17 1964-08-17 Admixing apparatus Expired - Lifetime US3224637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET0024523 1963-08-17

Publications (1)

Publication Number Publication Date
US3224637A true US3224637A (en) 1965-12-21

Family

ID=7551505

Family Applications (1)

Application Number Title Priority Date Filing Date
US390106A Expired - Lifetime US3224637A (en) 1963-08-17 1964-08-17 Admixing apparatus

Country Status (1)

Country Link
US (1) US3224637A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913631A (en) * 1974-06-20 1975-10-21 I E R A M Inst Europ De Rech E Aerosol device
FR2372265A1 (en) * 1976-11-29 1978-06-23 Unilever Nv DOSING DEVICE FOR INTRODUCING A DOSE OF LIQUID PRODUCT INTO A FLOW OF LIQUID
FR2636861A1 (en) * 1988-09-26 1990-03-30 Sandoz Sa METHOD AND DEVICE FOR MIXING LIQUIDS
EP0502191A1 (en) * 1989-11-24 1992-09-09 OHMI, Tadahiro Washing system
US5370274A (en) * 1989-11-24 1994-12-06 Ohmi; Tadahiro Apparatus for cleaning a wafer surface
US6588026B2 (en) * 1999-05-27 2003-07-08 Hts International Trading Ag Method of, and apparatus for, introducing a cleaning agent and/or disinfectant into sanitary facilities
WO2010030227A1 (en) * 2008-09-12 2010-03-18 3R Innovations Teknik Handelsbolag Method and apparatus for adding a liquid additive to a pressurized liquid flowing in a conduit
US20140360606A1 (en) * 2013-06-10 2014-12-11 Robert James Law Passive Injection of a Chemical Solution into a Process Stream
GB2617399A (en) * 2022-04-08 2023-10-11 Blue Tap Solutions Ltd Dosing apparatus and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1875023A (en) * 1930-09-22 1932-08-30 Gen Lab Inc Fluid injector
US2819679A (en) * 1953-03-02 1958-01-14 Wilson Margaret Plastering machines
US3166096A (en) * 1961-10-03 1965-01-19 Lang Helmut Dispenser for liquid additives to fluid streams

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1875023A (en) * 1930-09-22 1932-08-30 Gen Lab Inc Fluid injector
US2819679A (en) * 1953-03-02 1958-01-14 Wilson Margaret Plastering machines
US3166096A (en) * 1961-10-03 1965-01-19 Lang Helmut Dispenser for liquid additives to fluid streams

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913631A (en) * 1974-06-20 1975-10-21 I E R A M Inst Europ De Rech E Aerosol device
FR2372265A1 (en) * 1976-11-29 1978-06-23 Unilever Nv DOSING DEVICE FOR INTRODUCING A DOSE OF LIQUID PRODUCT INTO A FLOW OF LIQUID
US4141467A (en) * 1976-11-29 1979-02-27 Lever Brothers Company Fluid driven liquid dosing apparatus
FR2636861A1 (en) * 1988-09-26 1990-03-30 Sandoz Sa METHOD AND DEVICE FOR MIXING LIQUIDS
BE1003576A4 (en) * 1988-09-26 1992-04-28 Sandoz Sa Process and device for mixing liquids
EP0502191A1 (en) * 1989-11-24 1992-09-09 OHMI, Tadahiro Washing system
EP0502191A4 (en) * 1989-11-24 1992-10-21 Tadahiro Ohmi Washing system
US5370274A (en) * 1989-11-24 1994-12-06 Ohmi; Tadahiro Apparatus for cleaning a wafer surface
US6588026B2 (en) * 1999-05-27 2003-07-08 Hts International Trading Ag Method of, and apparatus for, introducing a cleaning agent and/or disinfectant into sanitary facilities
WO2010030227A1 (en) * 2008-09-12 2010-03-18 3R Innovations Teknik Handelsbolag Method and apparatus for adding a liquid additive to a pressurized liquid flowing in a conduit
US20140360606A1 (en) * 2013-06-10 2014-12-11 Robert James Law Passive Injection of a Chemical Solution into a Process Stream
US9533270B2 (en) * 2013-06-10 2017-01-03 Robert James Law Passive injection of a chemical solution into a process stream
GB2617399A (en) * 2022-04-08 2023-10-11 Blue Tap Solutions Ltd Dosing apparatus and method

Similar Documents

Publication Publication Date Title
US3224637A (en) Admixing apparatus
US3229854A (en) Water conditioning system
EP1420868B1 (en) Fluid injector with vent/proportioner ports
US3878970A (en) Beer dispensing instrumentalities and method
US3705598A (en) Automatic chemical mixer
US2503376A (en) Hydraulically operated liquid dispensing device
US3216622A (en) Method of controlling the quantities discharged during predetermined periods of one or more viscous liquids and apparatus for performing the method
US2932317A (en) Devices for admixing liquids
US1460389A (en) Liquid-dispensing station
GB1232928A (en)
GB1183056A (en) Metering Process for Dispensing Measured Quantities of Liquefied Gas
GB2057860A (en) Dishwasher
US3743141A (en) Mixing apparatus for liquids
US4321939A (en) Multi-liquid flow proportioning device
KR940009056A (en) Feeding device
US2799352A (en) Apparatus for proportioning fire extinguishing foam solutions
US3363642A (en) Control valve responsive to fluids of different densities
US3358706A (en) Apparatus for producing treating baths for textiles
US2715610A (en) Proportioner for chemical feed
US3306504A (en) Water conditioning system
US2013184A (en) Fluid storage and metering system
US2670104A (en) Liquid proportioning apparatus
US2413736A (en) Beverage dispenser
US2644405A (en) Control system
RU2812106C2 (en) Automatic pressure dispenser with capability of pumping foam agent from transport container to source of foam agent