GB599911A - An improved apparatus for controlling the ph value of liquids - Google Patents
An improved apparatus for controlling the ph value of liquidsInfo
- Publication number
- GB599911A GB599911A GB15992/44A GB1599244A GB599911A GB 599911 A GB599911 A GB 599911A GB 15992/44 A GB15992/44 A GB 15992/44A GB 1599244 A GB1599244 A GB 1599244A GB 599911 A GB599911 A GB 599911A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flow
- responsive
- float
- liquid
- tank
- 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
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
- G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Non-Electrical Variables (AREA)
- Accessories For Mixers (AREA)
Abstract
599,911. Mixing liquids in flow. BOBY & CO., Ltd., W., and SCOWEN, J. J. E. Aug. 22, 1944, No. 15992. Addition to 559,001. [Class 86] The apparatus of the parent Specification is modified in that the corrective fluid is supplied through a single control means, which is operated both by a device responsive to the rate of flow of the liquid to be treated, and a device responsive to the pH of the liquid. The flow responsive device comprises a float 10 whose vertical position is controlled by the rate of flow of liquid over a weir in a tank 11. A vertical rod 12 mounted in guides 13 is secured to the float 10 and is connected by a wire 14 passing over pulleys 16, 17, 18 to a needle valve 19 which operates in an orifice 20 in a tank 21, to which the corrective fluid is supplied from a constant level tank. A vertical movement of the float 10 is transmitted to the needle valve 19, which is also operated by the vertical movement of the pulley 17. The latter is mounted on a rod 29 joined to a wire 33 which passes around a pulley 32 rotatable by the pH responsive device. Further modifications are described in which the movable pulley is caused to move both horizontally and vertically under the action of the pH responsive device.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12481/42A GB559001A (en) | 1942-09-03 | 1942-09-03 | An improved apparatus for controlling the ph value of liquids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB599911A true GB599911A (en) | 1948-03-24 |
Family
ID=10005390
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12481/42A Expired GB559001A (en) | 1942-09-03 | 1942-09-03 | An improved apparatus for controlling the ph value of liquids |
| GB15992/44A Expired GB599911A (en) | 1942-09-03 | 1944-08-22 | An improved apparatus for controlling the ph value of liquids |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12481/42A Expired GB559001A (en) | 1942-09-03 | 1942-09-03 | An improved apparatus for controlling the ph value of liquids |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB559001A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3791793A (en) * | 1972-01-31 | 1974-02-12 | Leeds & Northrup Co | Adaptive feed forward-feedback control of the concentration of a selected ion of a solution |
| JPS5127490Y1 (en) * | 1972-10-27 | 1976-07-12 | ||
| US4026668A (en) * | 1973-12-20 | 1977-05-31 | Eastman Kodak Company | Control apparatus for silver halide emulsion making |
-
1942
- 1942-09-03 GB GB12481/42A patent/GB559001A/en not_active Expired
-
1944
- 1944-08-22 GB GB15992/44A patent/GB599911A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB559001A (en) | 1944-01-31 |
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