CN211427167U

CN211427167U - Automatic solution pH value adjusting system

Info

Publication number: CN211427167U
Application number: CN201922400862.4U
Authority: CN
Inventors: 黄开良; 王宁; 李春明; 苏丹敏
Original assignee: Shenzhen Baoan Dongjiang Environmental Protection Technology Co ltd
Current assignee: Shenzhen Baoan Dongjiang Environmental Protection Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-04
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to an automatic solution pH value adjusting system, which comprises a dosing pump, a liquid medicine tank, a solenoid valve, a pipeline mixer, an online pH meter, a storage tank and a control circuit for controlling the dosing pump, the solenoid valve and the online pH meter to work; the water inlet of the dosing pump is connected with the liquid medicine tank through a first pipeline, the water outlet of the dosing pump is connected with the water inlet of the electromagnetic valve through a second pipeline, the water outlet of the electromagnetic valve is connected with the dosing water inlet pipe orifice of the pipeline mixer through a third pipeline, the water outlet pipe orifice of the pipeline mixer is connected with the storage tank through a fourth pipeline, and the online pH meter is arranged on the fourth pipeline so that the probe of the online pH meter is contacted with the solution flowing into the fourth pipeline; and a stock solution inlet pipe orifice of the pipeline mixer is connected with a fifth pipeline. The utility model discloses solution pH value automatic regulating system can quick accurate regulation pH value, has advantages such as convenient operation, simple and the adaptability of process flow is wide.

Description

Automatic solution pH value adjusting system

[ technical field ] A method for producing a semiconductor device

The utility model relates to a pH value adjusts, in particular to pH value adjusting equipment especially relates to solution pH value automatic regulating system.

[ background of the invention ]

The pH value adjustment refers to a process of adding an acidic or alkaline substance into a liquid with the pH value to be adjusted to perform a neutralization reaction so as to change the pH value of the solution. The commonly used pH regulator comprises a solid phase and a liquid phase, the solid phase comprises lime and caustic soda flakes, and a direct adding or pipe chain conveying mode is usually adopted; the liquid phase comprises sulfuric acid and liquid alkali, and the liquid phase is conveyed by a pump. In the fields of sewage treatment, pharmacy, chemical industry, tap water and the like, the pH value is often required to be adjusted, the adoption mode mainly comprises manual adjustment and automatic adjustment, and the defects are as follows:

firstly, the manual regulation speed is slow, so that the error of adding more or less medicament dosage is easy to occur, and the requirement of modern industry on automation cannot be met;

secondly, the prior automatic adjustment is to add the liquid to be adjusted first and then control the dosage of the needed acidic or alkaline substances by a pH meter, the method realizes the automatic adjustment of the pH value, but has the problems of low adjustment speed, large error caused by uneven stirring in the adjustment process and the like, and the work of cleaning an adjusting tank or a tank is increased when more precipitates are generated in certain neutralization reactions.

Therefore, how to design an automatic solution pH value adjusting system which can realize automatic control, can quickly and accurately meet the adjusting requirement, and can adapt to various environmental places and is economical and practical is a problem which needs to be solved at present.

[ Utility model ] content

The to-be-solved technical problem of the utility model lies in avoiding the weak point of above-mentioned prior art and providing a solution pH value automatic regulating system, and this governing system can quick accurate regulation pH value, has advantages such as convenient operation, simple and the adaptability of process flow is wide.

The utility model provides a technical scheme that technical problem adopted is:

the automatic solution pH value adjusting system comprises a dosing pump, a liquid medicine tank, an electromagnetic valve, a pipeline mixer, an online pH meter, a storage tank and a control circuit for controlling the dosing pump, the electromagnetic valve and the online pH meter to work; the pipeline mixer comprises a dosing water inlet pipe orifice, a stock solution water inlet pipe orifice, a water outlet pipe orifice and a containing cavity communicated with the dosing water inlet pipe orifice, the stock solution water inlet pipe orifice and the water outlet pipe orifice; the water inlet of the dosing pump is connected with the liquid medicine tank through a first pipeline, the water outlet of the dosing pump is connected with the water inlet of the electromagnetic valve through a second pipeline, the water outlet of the electromagnetic valve is connected with the dosing water inlet pipe orifice of the pipeline mixer through a third pipeline, the water outlet pipe orifice of the pipeline mixer is connected with the storage tank through a fourth pipeline, and the online pH meter is arranged on the fourth pipeline so that the probe of the online pH meter is contacted with the solution flowing into the fourth pipeline; the stock solution inlet pipe orifice of the pipeline mixer is connected with a fifth pipeline; the dosing pump, the electromagnetic valve and the online pH meter are electrically connected with the control circuit.

And a fourth pipeline which is at a horizontal distance from the water outlet pipe opening of the pipeline mixer is bent downwards to form a horizontal recess, so that the fourth pipeline sequentially comprises a fourth right high-level pipeline, a fourth right vertical pipeline, a fourth concave low pipeline, a fourth left vertical pipeline and a fourth left high-level pipeline at the horizontal recess, the fourth concave low pipeline is positioned below the fourth right high-level pipeline and the fourth left high-level pipeline, and the online pH meter is arranged on the fourth concave low pipeline to ensure that a probe of the online pH meter is contacted with the solution flowing into the fourth concave low pipeline.

The horizontal length distance between the probe of the on-line pH meter and the water outlet pipe orifice of the pipeline mixer is more than or equal to 1.5 meters.

And a filter is also arranged between the probe of the online pH meter and the water outlet pipe orifice of the pipeline mixer.

Compared with the prior art, the utility model discloses solution pH value automatic regulating system's beneficial effect lies in:

firstly, the automatic solution pH value adjusting system is specially provided with an electromagnetic valve, an online pH meter and a control circuit for controlling the operation of the dosing pump, the electromagnetic valve and the online pH meter; the utility model discloses a stock solution and regulating solution flow through the fourth pipeline after the appearance intracavity of pipeline mixer mixes evenly, and the on-line PH meter feeds back the signal to control circuit after detecting the pH value of the solution after mixing in the fourth pipeline, then control circuit goes to judge whether to go to control the regulating solution size and realize the regulation to solution pH value through the aperture of control solenoid valve according to the pH value scope that has set for; as long as the pH value detected by the online pH meter deviates from the set range, the opening degree of the electromagnetic valve can be correspondingly adjusted so as to maintain the pH value of the mixed solution within the set range;

and secondly, automatic control can be realized, the adjustment requirement can be quickly and accurately met, the device can also be suitable for various environmental places, and the device is economical, practical, convenient to operate and simple in process.

To sum up, the utility model discloses solution pH value automatic regulating system, quick accurate regulation pH value of ability has advantages such as convenient operation, simple and the adaptability of process flow is wide.

[ description of the drawings ]

FIG. 1 is a schematic diagram showing the principle of an embodiment of the automatic solution pH adjusting system according to the present invention, wherein arrows A, B and C indicate the flowing directions of the stock solution, the adjusting solution and the mixed solution in each pipeline;

FIG. 2 is a schematic diagram showing the principle of the second embodiment of the automatic pH value adjusting system, wherein arrows A, B and C indicate the flowing directions of the stock solution, the adjusting solution and the mixed solution in each pipeline;

FIG. 3 is a schematic diagram showing the principle of the third embodiment of the automatic pH value adjusting system, wherein arrows A, B and C indicate the flowing directions of the stock solution, the adjusting solution and the mixed solution in each pipeline;

FIG. 4 is a schematic block diagram of the circuit of the automatic solution pH adjustment system.

[ detailed description ] embodiments

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 4, an automatic solution pH adjusting system is used to adjust the pH of a liquid, i.e., a stock solution, to a pH within a predetermined range, and is suitable for all locations where acidic or alkaline liquids are used to adjust the pH; the device comprises a dosing pump 10, a liquid medicine tank 20, an electromagnetic valve 30, a pipeline mixer 40 with three pipe orifices, an online pH meter 50, a storage tank 60 and a control circuit 70 for controlling the dosing pump 10, the electromagnetic valve 30 and the online pH meter 50 to work; the pipeline mixer 40 comprises a drug-adding water inlet pipe orifice 41, a stock solution water inlet pipe orifice 42 and a water outlet pipe orifice 43, and a cavity (not shown) communicated with the drug-adding water inlet pipe orifice 41, the stock solution water inlet pipe orifice 42 and the water outlet pipe orifice 43; the water inlet of the dosing pump 10 is connected with the liquid medicine tank 20 through a first pipeline 91, the water outlet of the dosing pump 10 is connected with the water inlet of the electromagnetic valve 30 through a second pipeline 92, the water outlet of the electromagnetic valve 30 is connected with the dosing water inlet pipe orifice 41 of the pipeline mixer 40 through a third pipeline 93, the water outlet pipe orifice 43 of the pipeline mixer 40 is connected with the storage tank 60 through a fourth pipeline 94, and the online pH meter 50 is installed on the fourth pipeline 94 so that the probe 59 of the online pH meter 50 is in contact with the solution flowing into the fourth pipeline 94; the stock solution inlet pipe orifice 42 of the pipeline mixer 40 is connected with a fifth pipeline 95; the dosing pump 10, the solenoid valve 30 and the online pH meter 50 are electrically connected to the control circuit 70. The stock solution can be input into the containing cavity of the pipeline mixer 40 from the fifth pipeline 95 through the stock solution inlet pipe orifice 42 of the pipeline mixer 40 by adopting a lift pump (not shown), the regulating solution for regulating the pH value of the stock solution is stored in the liquid medicine tank 20, the regulating solution in the liquid medicine tank 20 can be conveyed into the containing cavity of the pipeline mixer 40 through the medicine adding pump 10, and the stock solution and the regulating solution are mixed in the containing cavity of the pipeline mixer 40 to change the pH value of the stock solution; the conditioning liquid may be an acidic or basic liquid, as determined by the need. The function of the in-line pH meter 50 is to detect the pH value in the solution.

Referring to fig. 2 and 3, a fourth pipe 94, which is horizontally spaced from the outlet nozzle 43 of the pipe mixer 40, is bent downward to form a horizontal depression 80, such that the fourth pipe 94 includes a fourth right high-level pipe 941, a fourth right upright pipe 942, a fourth recessed pipe 943, a fourth left upright pipe 944 and a fourth left high-level pipe 945 in this order at the horizontal depression 80, the fourth recessed pipe 943 is located below the fourth right high-level pipe 941 and the fourth left high-level pipe 945, that is, the fourth recessed pipe 943 has a lower height than the fourth right high-level pipe 941 and the fourth left high-level pipe 945, and the on-line pH meter 50 is mounted on the fourth recessed pipe 943 such that the probe 59 of the on-line pH meter 50 contacts the solution flowing into the fourth recessed pipe 943. The purpose of the horizontal recess 80 is that, because the fourth recess 943 at the horizontal recess 80 is lower than the height of the pipes at the two sides, a water storage area is formed, which can ensure that the probe 59 of the on-line pH meter 50 is soaked in the liquid for a long time, and the accuracy and the service life of the on-line pH meter 50 are not affected after the probe 59 is dried, so that the accuracy of the on-line pH meter 50 is high and the working life of the on-line pH meter 50 is long.

In order for the on-line pH meter 50 to detect a more stable and uniformly mixed solution, the horizontal length distance L between the probe of the on-line pH meter 50 and the water outlet nozzle 43 of the pipe mixer 40 is greater than or equal to 1.5 meters in FIGS. 1 to 3.

Referring to fig. 3, in order to prevent the precipitation material from flowing into the storage tank 60 due to the neutralization reaction occurring when the pH is adjusted, a filter 99 is further disposed between the probe of the in-line pH meter 50 and the outlet nozzle 43 of the line mixer 40.

The probe of the on-line pH meter 50 is contacted with the solution flowing into the fourth pipe 94, as shown in fig. 1, a gap (not shown) is firstly dug in the fourth pipe 94, and then the probe 59 of the on-line pH meter 50 is extended into the gap and then the gap is sealed; as shown in fig. 2 and 3, a tee 98 may be connected to the fourth pipe 94, and the probe 59 of the in-line pH meter 50 may be inserted from the upward pipe opening of the tee 98, and then the upward pipe opening of the tee 98 may be sealed.

Referring to fig. 1 to 4, when the solution pH value automatic adjusting system adjusts the pH value, a lift pump (not shown) is started first, so that the lift pump delivers the stock solution from a fifth pipe 95 to the cavity of the pipe mixer 40 through the stock solution inlet pipe 42, then a power switch of the control circuit 70 is turned on, the control circuit 70 is started, actually, the control circuit 70 is also electrically connected with a switch with three gears (an automatic gear, a manual gear and a stop gear), and the switches (not shown) with the three gears are turned to the automatic gear, the medicine feeding pump 10 delivers the adjusting solution in the liquid medicine tank 20 to the cavity of the pipe mixer 40 through a first pipe 91, a second pipe 92, the electromagnetic valve 30, a third pipe 93 and the medicine feeding inlet pipe 41, and the stock solution and the adjusting solution are uniformly mixed in the cavity of the pipe mixer 40 and flow out through a fourth pipe 94 through the outlet pipe 43 of the pipe mixer 40, the online PH meter 50 feeds back a signal to the control circuit 70 after detecting the PH value of the mixed solution in the fourth pipeline 94, and the control circuit 70 determines whether to adjust the PH value of the solution by controlling the opening of the electromagnetic valve 30 to control the size of the adjusting solution according to the set PH value range; for example, assuming that the added adjusting liquid is an acidic pH adjusting agent, when the pH value of the mixed solution is lower than the set range, the opening degree of the electromagnetic valve 30 is decreased, when the pH value of the mixed solution is higher than the set range, the opening degree of the electromagnetic valve 30 is increased, when the electromagnetic valve 30 is in a closed state, the dosing pump 10 stops working, and so on, as long as the pH value detected by the online pH meter 50 deviates from the set range, the opening degree of the electromagnetic valve 30 is adjusted accordingly to maintain the pH value of the mixed solution within the set range.

The specific circuit of control circuit 70 the utility model discloses do not protect, as long as reach the control circuit of above-mentioned requirement all can, this control circuit 70's specific circuit still realizes comparatively easily to ordinary electron technical staff moreover, no longer explains here again.

The above-mentioned embodiments only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but it is not understood to limit the scope of the invention, it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention, therefore, all the equivalent changes and modifications made with the scope of the claims of the present invention shall belong to the coverage of the claims of the present invention.

Claims

1. An automatic solution pH value adjusting system; the method is characterized in that:

the device comprises a dosing pump (10), a liquid medicine tank (20), an electromagnetic valve (30), a pipeline mixer (40), an online pH meter (50), a storage tank (60) and a control circuit (70) for controlling the dosing pump (10), the electromagnetic valve (30) and the online pH meter (50) to work; the pipeline mixer (40) comprises a dosing water inlet pipe orifice (41), a stock solution water inlet pipe orifice (42), a water outlet pipe orifice (43) and a containing cavity communicated with the dosing water inlet pipe orifice (41), the stock solution water inlet pipe orifice (42) and the water outlet pipe orifice (43); the water inlet of the dosing pump (10) is connected with the liquid medicine tank (20) through a first pipeline (91), the water outlet of the dosing pump (10) is connected with the water inlet of the electromagnetic valve (30) through a second pipeline (92), the water outlet of the electromagnetic valve (30) is connected with the medicine feeding water inlet pipe orifice (41) of the pipeline mixer (40) through a third pipeline (93), the water outlet pipe orifice (43) of the pipeline mixer (40) is connected with the storage tank (60) through a fourth pipeline (94), and the online pH meter (50) is installed on the fourth pipeline (94) to enable the probe of the online pH meter (50) to be in contact with the solution flowing into the fourth pipeline (94); the stock solution inlet pipe orifice (42) of the pipeline mixer (40) is connected with a fifth pipeline (95); the dosing pump (10), the electromagnetic valve (30) and the online pH meter (50) are electrically connected with the control circuit (70).

2. The automatic solution pH adjustment system according to claim 1, characterized in that:

the horizontal length distance (L) between the probe of the on-line pH meter (50) and the water outlet pipe orifice (43) of the pipeline mixer (40) is more than or equal to 1.5 m.

3. The automatic solution pH adjustment system according to claim 1, characterized in that:

a fourth pipe (94) which is at a horizontal distance from the water outlet pipe opening (43) of the pipe mixer (40) is bent downwards to form a horizontal recess (80), so that the fourth pipe (94) sequentially comprises a fourth right high-level pipe (941), a fourth right vertical pipe (942), a fourth recess-level pipe (943), a fourth left vertical pipe (944) and a fourth left high-level pipe (945) at the horizontal recess (80), the fourth recess-level pipe (943) is positioned below the fourth right high-level pipe (941) and the fourth left high-level pipe (945), and the online pH meter (50) is installed on the fourth recess-level pipe (943) to enable a probe of the online pH meter (50) to be in contact with the solution flowing into the fourth recess-level pipe (943).

4. The automatic solution pH adjustment system according to claim 3, characterized in that:

5. The automatic solution pH adjustment system according to any one of claims 1 to 4, characterized in that:

a filter (99) is also arranged between the probe of the online pH meter (50) and the water outlet pipe orifice (43) of the pipeline mixer (40).