CN117441740A - Weak acid disinfection solution, preparation method thereof and hypochlorous acid-based weak acid disinfection solution preparation device - Google Patents
Weak acid disinfection solution, preparation method thereof and hypochlorous acid-based weak acid disinfection solution preparation device Download PDFInfo
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- CN117441740A CN117441740A CN202311407508.9A CN202311407508A CN117441740A CN 117441740 A CN117441740 A CN 117441740A CN 202311407508 A CN202311407508 A CN 202311407508A CN 117441740 A CN117441740 A CN 117441740A
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- 239000002253 acid Substances 0.000 title claims abstract description 127
- 238000002360 preparation method Methods 0.000 title claims abstract description 58
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 171
- 238000000034 method Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 108
- 239000000243 solution Substances 0.000 claims description 83
- 239000003513 alkali Substances 0.000 claims description 76
- 230000001954 sterilising effect Effects 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 15
- 239000000645 desinfectant Substances 0.000 claims description 15
- 230000002378 acidificating effect Effects 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 7
- 150000002500 ions Chemical class 0.000 claims description 6
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000011012 sanitization Methods 0.000 claims description 4
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 3
- 239000012670 alkaline solution Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P1/00—Disinfectants; Antimicrobial compounds or mixtures thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/55—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers driven by the moving material
-
- 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
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/2201—Control or regulation characterised by the type of control technique used
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental Sciences (AREA)
- Wood Science & Technology (AREA)
- Plant Pathology (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
The invention provides a weak acid disinfection solution, a preparation method thereof and a weak acid disinfection solution preparation device based on hypochlorous acid, and relates to the field of hypochlorous acid preparation. The preparation method of the weak acid disinfection solution is simple and convenient, the process equipment is simple, the price is low, the cost is saved, the preparation efficiency is improved, and the parameter value of the finished product liquid in the liquid mixing barrel is communicated, calculated and monitored in real time between the PLC and the online pH meter, so that the accurate control and the intelligent control are achieved.
Description
The application is a divisional application of a weak acid disinfection solution preparation device based on hypochlorous acid and a disinfection solution, wherein the application date is 2018, 8, 18, the application number is CN 201810945144.2.
Technical Field
The invention relates to the field of hypochlorous acid preparation, in particular to a weak acid disinfection solution, a preparation method thereof and a weak acid disinfection solution preparation device based on hypochlorous acid.
Background
Hypochlorous acid has the functions and effects of an oxidant, a bleaching agent, an external bactericide, a disinfectant and the like, and the existing hypochlorous acid aqueous solution is prepared by an electrolysis principle, namely, saline solution (NaCI) or hydrochloric acid (HCI) is put into an electrolysis tank for electrolysis, and the generated chlorine gas is mixed with water to generate the hypochlorous acid water disinfectant.
Disadvantages of disinfectants produced using electrolytic processes are generally that such disinfectants have only limited durability and storability, the durability of which is about half a year, and that the disinfectants should also be kept in a closed container and cooled in a suitable manner. And the preparation process of hypochlorous acid solution by an electrolytic method is complex, the restriction and adjustment are more, and the conversion efficiency is low.
The Chinese patent CN206196781 discloses a hypochlorous acid water preparation technology in a slightly acidic hypochlorous acid water preparation device, but in the technology, hypochlorous acid water preparation needs to pass through a liquid mixing tank twice, mixed liquid in the first liquid mixing tank and the second liquid mixing tank is not effectively metered, only acidic liquid is metered, the pH value and the concentration of hypochlorous acid solution in the second liquid mixing tank are difficult to ensure to reach set values, and the aim of users expecting hypochlorous acid solution is achieved, so that the pH value and the concentration of the solution are difficult to ensure, and the efficiency is low.
Therefore, how to improve the preparation precision of hypochlorous acid solution, purify the preparation method, improve the adjustment range of concentration and pH value, enhance the controllability, and become the technical problem to be solved in the prior art.
Disclosure of Invention
The invention aims to provide a weak acid sterilizing solution, a preparation method thereof and a weak acid sterilizing solution preparation device based on hypochlorous acid.
To achieve the purpose, the invention adopts the following technical scheme:
a weak acid sterilizing solution, which is prepared from ionized water, alkali liquor and acid liquor; prepared by the following equation:
NaClO+H 2 O+HCl→HClO+ClO - +NaCl+H 2 O
the ionized water is acidic ionized water from an anode; the alkali liquor is food-grade sodium hypochlorite; the acid liquor is food grade hydrochloric acid.
Preferably, the pH value of the weak acid sterilizing solution is 5.0-6.8; the hypochlorous acid concentration in the weak acid disinfection solution is 100-260 ppm.
The invention also provides a preparation method of the weak acid disinfection solution, which adopts a weak acid disinfection solution preparation device based on hypochlorous acid for preparation; the weak acid disinfection solution preparation device based on hypochlorous acid comprises a liquid mixing barrel, an ionized water supply path entering the liquid mixing barrel, an alkali liquid supply path, an acid liquid supply path, an online pH meter and a controller;
the preparation method comprises the following steps:
setting parameters of weak acid disinfection solution by operating a display screen, and then automatically calculating the mixing proportion of ionized water, alkali liquor and acid liquor by a PLC; the ionized water, alkali liquor and acid liquor enter a liquid mixing barrel in three paths to obtain a finished product solution; the finished product solution enters a finished product solution supply tank through a liquid feeding pump and a liquid feeding communicating pipe to obtain the weak acid disinfection solution
The ionized water enters the ionized water filter through the ionized water metering pump through the ionized water supply pipe, enters the ionized water communication through the flowmeter, and enters the liquid mixing barrel through the ionized water one-way valve;
the alkali liquor quantitatively enters the liquid mixing barrel through an alkali liquor filter, an alkali liquor metering pump, an alkali liquor inlet pipe and an alkali liquor one-way valve;
the acid liquor quantitatively enters the liquid mixing barrel through the acid liquor filter, the acid liquor metering pump, the acid liquor inlet pipe and the acid liquor one-way valve.
Preferably, the concentration of the alkali liquor is 10-12%; the concentration of the acid solution is 32%.
The invention also provides a hypochlorous acid-based weak acid disinfection solution preparation device, which comprises a mixed solution barrel, an ionized water supply path, an alkali liquor supply path, an acid liquor supply path, an online pH meter and a controller, wherein the ionized water supply path enters the mixed solution barrel;
the ionized water supply path comprises an ionized water storage tank, an ionized water metering pump, an ionized water supply pipe, an ionized water liquid inlet pipe, an ionized water filter, an ionized water flowmeter and an ionized water one-way valve;
the alkali liquor supply path comprises an alkali liquor barrel, an alkali liquor inlet pipe, an alkali liquor metering pump, an alkali liquor filter and an alkali liquor check valve;
the acid liquid supply path comprises an acid liquid barrel, an acid liquid inlet pipe, an acid liquid metering pump, an acid liquid filter and an acid liquid one-way valve;
the liquid mixing barrel is used for mixing ionized water, alkali liquor and acid liquor to prepare a disinfection solution; the automatic vortex liquid mixing device comprises a vortex impeller and a main shaft, and the ion water automatically rotates around the main shaft under the weight action of the ion water after being injected into the vortex impeller of the automatic vortex liquid mixing device;
the online pH meter is used for detecting the pH value of the disinfection solution in the liquid mixing barrel in real time, transmitting real-time pH data to the controller, calculating the proportion of ionized water, alkali liquor and acid liquor through the controller, feeding back to the ionized water metering pump, the alkali liquor metering pump and the acid liquor metering pump respectively, and adjusting the liquid proportion in the liquid mixing barrel to realize the adjustment of the pH value.
Preferably, the bottom of the liquid mixing barrel is also provided with a finished product liquid feeding path, the finished product liquid feeding path is sequentially provided with a liquid feeding pump, a liquid feeding communicating pipe, a finished product liquid supply tank and a finished product liquid outlet, the prepared finished product liquid enters the finished product liquid supply tank through the liquid feeding pump, the liquid feeding pump is connected with the finished product liquid supply tank through the liquid feeding communicating pipe, and the finished product liquid outlet is arranged on the finished product liquid supply tank.
Preferably, the device further comprises a housing; wherein the ionized water storage tank and the ionized water metering pump are outside the housing; the shell is divided into an upper part and a lower part, wherein the upper part is an intelligent control part, and the lower part is a preparation part; the intelligent control part comprises an operation display screen and a controller, and the liquid mixing barrel, the alkali liquor supply path, the acid liquor supply path, the finished product liquid supply path and the online pH meter are all positioned at the preparation part, wherein the liquid mixing barrel is positioned at the upper part of the preparation part, and the alkali liquor barrel and the acid liquor barrel are positioned at the lower part of the preparation part; the controller is a PLC controller.
The invention can obtain weak acid disinfection solution with certain parameters through one-time liquid mixing, and has simple preparation method, simple process equipment, low price and cost saving. The three raw materials can be mixed through the PLC controller once, the preparation efficiency is improved, and parameter values of finished liquid in the liquid mixing barrel are communicated, calculated and monitored in real time between the PLC controller and an online pH meter, so that accurate control and intelligent control are achieved. The weak acid hypochlorous acid disinfectant solution prepared by the method can be used for food sterilization, has strong sterilization capability, simple and easy generation mode, wide range of concentration adjustment and pH adjustment, strong controllability, high stability, high safety and the like, has weak corrosiveness to metal materials, can be used for spraying operation to sterilize air, does not harm personnel in the operation process, and has high sterilization effect, and the shelf life, the use mode and the like of the hypochlorous acid disinfectant solution are improved.
Drawings
FIG. 1 is a schematic diagram of a weak acidic sterilizing solution preparation apparatus based on hypochlorous acid according to an embodiment of the present invention;
FIG. 2 is a block diagram of an apparatus for preparing a weak acidic sterilizing solution based on hypochlorous acid by a mixing modulation method according to an embodiment of the present invention;
FIG. 3 is a side view of a vortex automatic liquid mixing device of a sanitizing solution preparation device, in accordance with an embodiment of the present invention;
fig. 4 is a top view of a vortex automatic liquid mixing device of a sterilizing solution preparation device according to an embodiment of the present invention.
The technical features indicated by the reference numerals in the drawings are as follows:
1. an ionized water storage tank; 2. an ion water metering pump; 3. an ionized water supply pipe; 10. an intelligent control unit; 11. operating a display screen; 12. a housing; 13. a controller; 20. a preparation section; 21. a liquid feeding pump; 22. a liquid feed communicating tube; 23. a finished product liquid supply tank; 24. a finished product liquid outlet; 30. an alkali liquor barrel; 31. an alkali liquor filter; 32. an alkali liquor inlet pipe; 33. an alkali liquor metering pump; 34. an alkali liquor one-way valve; 40. an acid liquor barrel; 41. an acid liquid filter; 42. an acid liquid inlet pipe; 43. an acid liquor metering pump; 44. an acid liquor one-way valve; 50. an ionized water filter; 51. an ion water flowmeter; 52. an ionized water inlet pipe; 53. an ionic water one-way valve; 54. a vortex automatic liquid mixing device; 54-1, a vortex impeller; 54-2, a main shaft; 55. a liquid mixing barrel; 56. an on-line pH meter.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Referring to fig. 1, a schematic diagram of a hypochlorous acid-based disinfectant solution preparation device is shown, a weak acid disinfectant solution is prepared by adopting a one-time mixing and modulating method, three raw materials of ionized water, alkali liquor and acid liquor are fed into a liquid mixing barrel in three paths, the pH value of the solution is monitored in real time by an online pH meter and fed back to a controller, the controller can be a PLC (programmable logic controller) controller, the fed doses of the three raw materials are controlled, so that the pH value and hypochlorous acid concentration of the disinfectant solution are finely adjusted, and a finished product solution is prepared in the liquid mixing barrel.
Thus, referring to FIG. 2, there is shown a block diagram of an apparatus for preparing a weak acidic sterilizing solution based on hypochlorous acid by a mixing modulation method according to an embodiment of the present invention,
the preparation device comprises a liquid mixing barrel 55, an ionized water supply path, an alkali liquid supply path and an acid liquid supply path which enter the liquid mixing barrel, an online pH meter 56 and a controller 13;
wherein the ionized water supply path comprises an ionized water storage tank 1, an ionized water metering pump 2 and an ionized water supply pipe 3, and ionized water enters the liquid mixing barrel 44 through the ionized water storage tank 1, the ionized water metering pump 2, the ionized water supply pipe 3 and an ionized water liquid inlet pipe 52;
the alkali liquor supply path comprises an alkali liquor barrel 30, an alkali liquor inlet pipe 32 and an alkali liquor metering pump 33, wherein alkali liquor enters a mixed liquor barrel 44 through the alkali liquor barrel 30 and the alkali liquor inlet pipe 32 by the alkali liquor metering pump 33;
the acid liquid supply path comprises an acid liquid barrel 40, an acid liquid inlet pipe 42 and an acid liquid metering pump 43, wherein the acid liquid passes through the acid liquid barrel 40 and enters a mixed liquid barrel 44 through the acid liquid inlet pipe 42 by the acid liquid metering pump 43;
a mixing tank 55 for mixing ionized water, alkali liquor and acid liquor to prepare a disinfection solution;
the online pH meter 56 is used for detecting the pH value of the disinfection solution in the mixing barrel in real time, transmitting real-time pH data to the controller 13, calculating the proportion of ionized water, alkali liquor and acid liquor through an operation program in the controller, and feeding back to the ionized water metering pump, the alkali liquor metering pump and the acid liquor metering pump respectively, and adjusting the liquid proportion in the mixing barrel to realize adjustment of the pH value.
Further, referring to fig. 3 and 4, the acid liquid inlet pipe and the alkali liquid inlet pipe are connected to the liquid mixing barrel through the side part of the liquid mixing barrel, the vortex automatic liquid mixing device 54 is arranged at the upper part of the liquid mixing barrel, the vortex automatic liquid mixing device 54 comprises a vortex impeller 54-1 and a main shaft 54-2, after the ionized water is injected into the vortex impeller of the vortex automatic liquid mixing device, the ionized water automatically rotates around the main shaft under the weight action of the ionized water, external power is not needed, the effect of automatic liquid mixing uniformity is achieved, and the mixed preparation of the ionized water, the alkali liquid and the acid liquid is realized.
Further, the ionized water supply path further has an ionized water filter 50, an ionized water flowmeter 51, and an ionized water check valve 53 in this order; the lye supply path is also provided with a lye filter 31 and a lye one-way valve 34 in sequence; the acid liquid supply path is also provided with an acid liquid filter 41 and an acid liquid one-way valve 44 in sequence, so that the filtration and protection of the three raw material supply paths are realized.
In the embodiment of the present invention, the controller 13 may be a PLC controller, various other programmable logic devices, and various other control units, so long as the control of the feeding amounts of the three raw materials according to the pH values detected in real time can be achieved.
Further, a finished product liquid feeding path is provided at the bottom of the liquid mixing barrel, and the finished product liquid feeding path is sequentially provided with a liquid feeding pump 21, a liquid feeding communicating pipe 22, a finished product liquid supply tank 23 and a finished product liquid outlet 24. The prepared finished product liquid enters the finished product liquid supply tank through the liquid supply pump, the liquid supply pump and the finished product liquid supply tank are connected through the liquid supply communicating pipe, a finished product liquid outlet is arranged on the finished product liquid supply tank, and the finished product liquid flows out. The finished product liquid supply tank also plays a certain buffering role, and uneven flow of the finished product liquid is avoided.
Therefore, the invention also discloses a weak acid disinfection solution based on hypochlorous acid, which is prepared from ionized water, alkali liquor and acid liquor by the following equation:
NaClO+H 2 O+HCl→HClO+ClO - +NaCl+H 2 O
wherein the ionized water is acidic ionized water from an anode, the alkali liquor is food-grade sodium hypochlorite, the optional concentration is 10-12%, the acid liquor is food-grade hydrochloric acid, and the optional concentration is 32%. The pH value of the prepared weak acid hypochlorous acid sterilizing solution is preferably 5.0-6.8 according to the setting of users, and the hypochlorous acid concentration in the sterilizing solution is 100-260 ppm. The acidic ionized water has weak acidity, so that the proportion of the edible grade hydrochloric acid can be reduced, the cleanliness requirement is met, and the effect of the disinfection solution is further improved.
And (3) automatically calculating the proportion of various raw materials to be mixed according to the pH value of the solution by using a PLC intelligent control system, and then feeding the solution into a metering pump for mixing to obtain the required weak acid hypochlorous acid disinfection solution.
Still further, referring to fig. 2, the preparation apparatus further includes a housing 12, wherein the ionized water storage tank and the ionized water metering pump are located outside the housing, the housing is divided into an upper portion and a lower portion, the upper portion is an intelligent control portion 10, the lower portion is a preparation portion 20, the intelligent control portion includes an intelligent control portion with an operation display screen 11 and a controller 13 located at the upper portion, a mixing tank 55, an alkaline solution supply path, an acid solution supply path, a finished product liquid supply path and an online pH meter 56 are all located at the lower portion of the preparation portion, the mixing tank 55 is located at the upper portion of the preparation portion, the alkaline solution tank and the acid solution tank are located at the lower portion of the preparation portion, the alkaline solution tank is upwardly provided with an alkaline solution filter, an alkaline solution metering pump, and an alkaline solution one-way valve, which are sequentially connected through an alkaline solution inlet pipe, to quantitatively convey alkaline solution into the mixing tank; wherein the acid liquor barrel is provided with an acid liquor filter, an acid liquor metering pump and an acid liquor one-way valve upwards, which are sequentially connected through an acid liquor inlet pipe, and the acid liquor is quantitatively conveyed into the mixed liquor barrel. The acid liquor and alkali liquor systems are arranged in parallel.
The specific method for preparing the hypochlorous acid-based disinfectant solution by using the preparation device comprises the following steps:
the user sets parameters of mixed liquor such as pH value, hypochlorous acid concentration and the like by operating the display screen, and then the PLC automatically calculates the mixing proportion of the ionic water, the alkali liquor and the acid liquor, and the three raw materials enter the mixed liquor barrel in three paths.
Ionized water supply path: acidic ionized water in the ionized water storage tank passes through the ionized water metering pump, enters the ionized water filter through the ionized water supply pipe, enters the ionized water communication through the flowmeter, and enters the liquid mixing barrel through the ionized water one-way valve.
Alkali liquor supply path: the alkali liquor in the alkali liquor barrel quantitatively enters the liquid mixing barrel through an alkali liquor filter, an alkali liquor metering pump, an alkali liquor inlet pipe and an alkali liquor one-way valve.
Acid liquid supply path: the acid liquor in the acid liquor barrel quantitatively enters the liquid mixing barrel through the acid liquor filter, the acid liquor metering pump, the acid liquor inlet pipe and the acid liquor one-way valve.
When the ionized water enters the liquid mixing barrel, the ionized water is firstly contacted with the vortex automatic liquid mixing device in the liquid mixing barrel to drive the vortex automatic liquid mixing device to rotate, and the solution is stirred, so that the solution is fully and uniformly mixed, the pH value of the solution is monitored in real time by an online pH meter, and the pH value is fed back to a PLC (programmable logic controller) to control the entering dosage of three raw materials. The one-way valve can prevent liquid from flowing back and influence the stability of the pH value.
The finished product solution prepared in the liquid mixing barrel enters the finished product solution supply tank through the liquid feeding pump and the liquid feeding communicating pipe and flows out from the finished product solution outlet. The finished product liquid supply tank not only meets the liquid supply function, but also plays a certain role in buffering, and prevents the finished product liquid from being incapable of supplying liquid in time due to mixing.
The weak acid disinfection solution with certain parameters can be obtained by one-time mixing, the preparation method is simple, the process equipment is simple, the price is low, and the cost is saved. The weak acid hypochlorous acid disinfectant solution prepared by the method can be used for food sterilization, has strong sterilization capability, simple and easy generation mode, wide range of concentration adjustment and pH adjustment, strong controllability, high stability, high safety and the like, has weak corrosiveness to metal materials, can be used for spraying operation to sterilize air, does not harm personnel in the operation process, and has high sterilization effect, and the shelf life, the use mode and the like of the hypochlorous acid disinfectant solution are improved.
In conclusion, the device for preparing weak acid disinfection solution based on the mixed preparation method has a simple structure, three raw materials can be mixed at one time through the PLC, the preparation efficiency is improved, and parameter values of finished product liquid in the liquid mixing barrel are communicated, calculated and monitored in real time between the PLC and an online pH meter, so that accurate control and intelligent control are achieved.
While the invention has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art without departing from the spirit of the invention, which is to be construed as falling within the scope of the invention defined by the appended claims.
Claims (7)
1. A weak acid disinfection solution is characterized in that the preparation raw materials comprise ionized water, alkali liquor and acid liquor; prepared by the following equation:
NaClO+H 2 O+HCl→HClO+ClO - +NaCl+H 2 O
the ionized water is acidic ionized water from an anode; the alkali liquor is food-grade sodium hypochlorite; the acid liquor is food grade hydrochloric acid.
2. The weak acid sanitizing solution as claimed in claim 1, wherein the weak acid sanitizing solution has a pH of 5.0 to 6.8; the hypochlorous acid concentration in the weak acid disinfection solution is 100-260 ppm.
3. The method for producing a weakly acidic disinfectant solution according to any one of claims 1 to 2, characterized in that the production is carried out by using a weakly acidic disinfectant solution production apparatus based on hypochlorous acid; the weak acid disinfection solution preparation device based on hypochlorous acid comprises a liquid mixing barrel, an ionized water supply path entering the liquid mixing barrel, an alkali liquid supply path, an acid liquid supply path, an online pH meter and a controller;
the preparation method comprises the following steps:
setting parameters of weak acid disinfection solution by operating a display screen, and then automatically calculating the mixing proportion of ionized water, alkali liquor and acid liquor by a PLC; the ionized water, alkali liquor and acid liquor enter a liquid mixing barrel in three paths to obtain a finished product solution; the finished product solution enters a finished product solution supply tank through a liquid feeding pump and a liquid feeding communicating pipe to obtain the weak acid disinfection solution
The ionized water enters the ionized water filter through the ionized water metering pump through the ionized water supply pipe, enters the ionized water communication through the flowmeter, and enters the liquid mixing barrel through the ionized water one-way valve;
the alkali liquor quantitatively enters the liquid mixing barrel through an alkali liquor filter, an alkali liquor metering pump, an alkali liquor inlet pipe and an alkali liquor one-way valve;
the acid liquor quantitatively enters the liquid mixing barrel through the acid liquor filter, the acid liquor metering pump, the acid liquor inlet pipe and the acid liquor one-way valve.
4. A process according to claim 3, wherein the concentration of the lye is 10-12%; the concentration of the acid solution is 32%.
5. The weak acid disinfection solution preparation device based on hypochlorous acid is characterized by comprising a mixed solution barrel, an ionized water supply path entering the mixed solution barrel, an alkali solution supply path, an acid solution supply path, an online pH meter and a controller;
the ionized water supply path comprises an ionized water storage tank, an ionized water metering pump, an ionized water supply pipe, an ionized water liquid inlet pipe, an ionized water filter, an ionized water flowmeter and an ionized water one-way valve;
the alkali liquor supply path comprises an alkali liquor barrel, an alkali liquor inlet pipe, an alkali liquor metering pump, an alkali liquor filter and an alkali liquor check valve;
the acid liquid supply path comprises an acid liquid barrel, an acid liquid inlet pipe, an acid liquid metering pump, an acid liquid filter and an acid liquid one-way valve;
the liquid mixing barrel is used for mixing ionized water, alkali liquor and acid liquor to prepare a disinfection solution; the automatic vortex liquid mixing device comprises a vortex impeller and a main shaft, and the ion water automatically rotates around the main shaft under the weight action of the ion water after being injected into the vortex impeller of the automatic vortex liquid mixing device;
the online pH meter is used for detecting the pH value of the disinfection solution in the liquid mixing barrel in real time, transmitting real-time pH data to the controller, calculating the proportion of ionized water, alkali liquor and acid liquor through the controller, feeding back to the ionized water metering pump, the alkali liquor metering pump and the acid liquor metering pump respectively, and adjusting the liquid proportion in the liquid mixing barrel to realize the adjustment of the pH value.
6. The apparatus for preparing a weakly acidic sterilizing solution according to claim 5, wherein a finished product liquid feeding path is further provided at the bottom of the mixing tank, the finished product liquid feeding path is sequentially provided with a liquid feeding pump, a liquid feeding communicating pipe, a finished product liquid supply tank and a finished product liquid outlet, the prepared finished product liquid enters the finished product liquid supply tank through the liquid feeding pump, the liquid feeding pump and the finished product liquid supply tank are connected through the liquid feeding communicating pipe, and the finished product liquid outlet is provided on the finished product liquid supply tank.
7. The weak acid sanitizing solution preparation device of claim 5, further comprising a housing; wherein the ionized water storage tank and the ionized water metering pump are outside the housing; the shell is divided into an upper part and a lower part, wherein the upper part is an intelligent control part, and the lower part is a preparation part; the intelligent control part comprises an operation display screen and a controller, and the liquid mixing barrel, the alkali liquor supply path, the acid liquor supply path, the finished product liquid supply path and the online pH meter are all positioned at the preparation part, wherein the liquid mixing barrel is positioned at the upper part of the preparation part, and the alkali liquor barrel and the acid liquor barrel are positioned at the lower part of the preparation part; the controller is a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311407508.9A CN117441740A (en) | 2018-08-18 | 2018-08-18 | Weak acid disinfection solution, preparation method thereof and hypochlorous acid-based weak acid disinfection solution preparation device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN201810945144.2A CN109046065A (en) | 2018-08-18 | 2018-08-18 | Based on hypochlorous faintly acid antiseptic solution preparation facilities and antiseptic solution |
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| CN110368845B (en) * | 2019-08-27 | 2024-02-09 | 广州泰道安医疗科技有限公司 | Chlorine-containing disinfectant fluid production equipment |
| CN110523319B (en) * | 2019-08-27 | 2021-12-10 | 广州泰道安医疗科技有限公司 | Disinfectant fluid production process |
| CN110508180B (en) * | 2019-08-27 | 2021-10-29 | 广州泰道安医疗科技有限公司 | Production process of chlorine-containing disinfectant fluid |
| CN110885127A (en) * | 2019-09-23 | 2020-03-17 | 昆山阳澄蓝谷环境研究所有限公司 | Wastewater treatment method using molecular weakly acidic HOCl water |
| CN111232929A (en) * | 2020-03-24 | 2020-06-05 | 乔卫峰 | Equipment for preparing hypochlorous acid solution and hypochlorous acid solution preparation process |
| CN111388723A (en) * | 2020-05-25 | 2020-07-10 | 乔卫峰 | Disinfectant configuration atomizing degassing unit |
| CN111758722A (en) * | 2020-07-23 | 2020-10-13 | 亳州麦信生物科技有限公司 | Intelligent production system of subacidity hypochlorous acid antiseptic solution |
| CN112007191A (en) * | 2020-07-29 | 2020-12-01 | 孙秀会 | Hypochlorous acid disinfection device and preparation method thereof |
| CN112057660A (en) * | 2020-07-29 | 2020-12-11 | 孙秀会 | Animal and plant disease control, aldehyde removal and deodorization device and method |
| CN112520700A (en) * | 2020-12-07 | 2021-03-19 | 李斌山 | Novel safe and environment-friendly disinfectant production process |
| CN112472855A (en) * | 2020-12-16 | 2021-03-12 | 沈阳溢源生物科技有限公司 | Special automatic liquid feeding machine of intelligent disinfection robot |
| CN113854312A (en) * | 2021-09-06 | 2021-12-31 | 河北兴烨灭菌科技有限公司 | Sterilization solution, and preparation method and preparation device thereof |
| CN114887550A (en) * | 2022-05-11 | 2022-08-12 | 中领水净科技(深圳)有限公司 | High stability mixed type hypochlorous acid disinfectant preparation system |
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