CN205920328U - Automatic chemical feeding equipment - Google Patents
Automatic chemical feeding equipment Download PDFInfo
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- CN205920328U CN205920328U CN201620679158.0U CN201620679158U CN205920328U CN 205920328 U CN205920328 U CN 205920328U CN 201620679158 U CN201620679158 U CN 201620679158U CN 205920328 U CN205920328 U CN 205920328U
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- dosing
- automatic
- dosing pump
- pressure
- medicament
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Abstract
The utility model relates to an automatic chemical feeding equipment, including dosing pump and a plurality of automatic valve, medicament a to trunk line that comes from the medicament source is carried to this dosing pump, and each automatic valve sets up respectively and is corresponding with on the lateral conduit of snack made with traditional chinese medicines, and the lateral conduit that wherein is used for carrying same medicament all is connected to this trunk line, and this dosing pump adds under the control of medicine pump control system signal frequency change's, controls the pressure in this trunk line.
Description
Technical field
This utility model is related to industrial automatic equipment, especially relates to a kind of automatic dosing apparatus.
Background technology
In wastewater treatment, during particularly chemical method processes waste water, can need to anti-according to waste water treatment process
Answer and in equipment, add various medicaments.Generally, chemical agent (as acid, alkali, oxidant, reducing agent etc.) be with dosing pump or
Other dosings are pumped into reactor.
Fig. 1 illustrates a kind of medicine machine schematic diagram of routine.With reference to shown in Fig. 1, divide from the medicament of liquid medicine storage case output
It is not transported to each chemical feeding points.It is equipped with a dosing pump in each chemical feeding points, required medicament is transported to reactor.(n is n
Positive integer) individual chemical feeding points are altogether equipped with n platform dosing pump.
The situation that a kind of medicament will supply multiple use snack made with traditional Chinese medicines often occurs in engineering project.These use same medicament
Chemical feeding points quantity even up to ten several.But according to the scheme shown in Fig. 1, when n chemical feeding points use same medicament
When also must be equipped with n platform dosing pump, therefore to be equipped with quantity many for dosing pump.The shortcoming thus brought is that equipment investment is big, fault is sent out
Raw probability increases, and the utilization rate of dosing pump is relatively low (because dosing pump is usually periodic running).
Utility model content
Technical problem to be solved in the utility model is to provide a kind of automatic dosing apparatus, to ensure dosing effect
Under the premise of reduce equipment cost.
This utility model employed technical scheme comprise that a kind of automatic dosing apparatus of proposition, bag for solving above-mentioned technical problem
Include dosing pump and multiple automatic valve, the conveying of this dosing pump is derived from the medicament of medicament source to a main pipeline, and each automatic valve sets respectively
Put on the lateral of corresponding chemical feeding points, the lateral being wherein used for conveying same medicament is all connected to this main pipeline,
This dosing pump, under the control of the dosing pump control signal that frequency changes, controls the pressure in this main pipeline.
In an embodiment of the present utility model, above-mentioned automatic dosing apparatus also include pressure transducer and converter,
This pressure transducer measures the pressure in this main pipeline and provides pressure detecting signal to this converter, and this converter is according to this pressure
Power detection signal obtains this dosing pump control signal.
In an embodiment of the present utility model, this converter comprises pid controller and executor, this pid controller root
Difference according to this pressure detecting signal actual pressure value being comprised and the target pressure value setting obtains operation result, this execution
Device generates this dosing pump control signal according to this operation result.
In an embodiment of the present utility model, above-mentioned automatic dosing apparatus, including this dosing pump multiple, each convey
From the extremely different main pipeline of the different agents of each medicament source, each main pipeline is connected with this lateral multiple.
In an embodiment of the present utility model, above-mentioned automatic dosing apparatus also include controller, and this controller conveys
Adding medicine control signal is to each automatic valve.
In an embodiment of the present utility model, at least part of automatic valve is metering valve.
This utility model, due to using above technical scheme, being allowed to compared with prior art, can save equipment investment
This, reduce fault occurrence probability, and improve the utilization rate of dosing pump.
Brief description
It is that above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing to this practicality
New specific embodiment elaborates, wherein:
Fig. 1 is a kind of conventional medicine machine schematic diagram.
Fig. 2 is the automatic dosing apparatus schematic diagram of this utility model one embodiment.
Fig. 3 is the Adding medicine control block diagram of this utility model one embodiment.
Specific embodiment
Fig. 2 is the medicine machine schematic diagram of this utility model one embodiment.With reference to shown in Fig. 2, the automatic of the present embodiment adds
Medicine equipment 20 can be used for field of waste water treatment, and it includes medicament storage case 21, dosing pump 22, automatic valve 24, converter 25, pressure
Sensor 26 and controller 27.Medicament storage case 21, as medicament source, stores the medicament needed for dosing.Medicament storage case 21 can
To be replaced by medicament transfer pipeline.Dosing pump 22 conveying is derived from the medicament of medicament storage case 21 to main pipeline 28.In medicine machine
Be provided with multiple laterals 29, extend respectively into each chemical feeding points, such as chemical feeding points 1, chemical feeding points 2, chemical feeding points 3 ..., chemical feeding points
N (n is positive integer).Each automatic valve 24 is separately positioned on the lateral 29 of corresponding chemical feeding points.Here, being used for conveying same
The lateral 29 of medicament is all connected on main pipeline 28.Add through same from the same medicament of medicament storage case 21 output
After Teat pipette 22, multiple different chemical feeding points can be respectively delivered to.So, each chemical feeding points just can share same dosing pump 22.
Dosing pump 22 can close on medicament storage case 21 and arrange, or any position before pipe branch.
Dosing pump 22 opens and closes under the control of dosing pump control signal.The opening and closing of automatic valve 24 can be
Independent, be controlled by different Adding medicine control signal s1, s2, s3 ... sn.Certainly, the unlatching of part automatic valve 24 and
Closing can be association.
Because same dosing pump 22 needs to be transported to each different chemical feeding points, and these chemical feeding points are likely to be at unlatching
With close different conditions, thus having influence on the pressure in whole pipeline.For this reason, configuration dosing pump 22 is frequency conversion dosing pump, its
Under the control of the dosing pump control signal of frequency change, control the pressure in main pipeline 28.
Further, automatic dosing apparatus 20 also include converter 25 and pressure transducer 26.Pressure transducer 26 may be provided in
In main pipeline 28, measure the pressure in main pipeline 28 and provide pressure detecting signal to converter 25, converter 25 is according to pressure
Detection signal obtains the dosing pump control signal being used for controlling dosing pump 22.The dynamic control process of pressure can use ratio integration
Differential adjusts computing.
Fig. 3 is the Adding medicine control block diagram of this utility model one embodiment.With reference to shown in Fig. 3, specifically, converter 25 can
Comprise pid controller 31 and executor 32 further.The actual pressure value that pid controller 31 is comprised according to pressure detecting signal
Obtain operation result with the difference of the target pressure value setting, executor 32 generates dosing pump control signal according to operation result.
Pid controller can be according to the kp parameter (proportionality coefficient) being previously set, ti (integration time constant), td (differential
Time constant), and calculate through formula u (t)=kp [e (t)+1/ti ∫ e (t) dt+td*de (t)/dt], by operation result u (t)
The dosing pump control signal generating and exporting a suitable frequency by executor is to dosing pump 22.
Dosing pump 22 changes the change of pipeline pressure by the change of frequency, and whole system is through several concussion cycles
Controlling finally makes drug feeding pipeline pressure close to target set pressure, is so far achieved that chemical feeding points are carried out according to technological requirement
Stablize dosing.
In addition, setting controller 27, it can provide enabling signal to converter 25, and controller 27 conveying Adding medicine control letter
Number to each automatic valve 24.
Taking an actual dosing process as a example, when certain chemical feeding points needs medication, controller 27 conveying Adding medicine control letter
Number to corresponding automatic valve 24, automatically turn on corresponding automatic valve, and give 25 1 enabling signals of converter, converter simultaneously
25 bring into operation.During first chemical feeding points dosing, when having second chemical feeding points to need dosing, controller 27 leaves automatically again
Open the automatic valve corresponding to second chemical feeding points, now drug feeding pipeline has of short duration pressure drop situation, converter 25
Pid controller 31 can improve running frequency progressively to dosing pump 22, finally make chemical feed pipe according to the situation of change of pipeline pressure
Road pressure, close to goal pressure, is so far achieved that this two chemical feeding points carry out stablizing dosing according to technological requirement.If now
When the even more many chemical feeding points of the 3rd chemical feeding points and needing dosing, control principle is just as.
When certain chemical feeding points adds medicine, controller 27 can be automatically switched off corresponding automatic valve, now drug feeding pipeline meeting
Of short duration pressure is had to rise situation, the pid controller 31 of converter 25 can progressively give dosing according to the situation of change of pipeline pressure
Pump 22 reduces running frequency, finally makes drug feeding pipeline pressure close to goal pressure, is so far achieved that remaining operating
Chemical feeding points carry out stablizing dosing according to technological requirement.
When all chemical feeding points all complete dosing, controller 27 can be automatically switched off all of automatic valve, and simultaneously closes off
To the enabling signal of converter 25, converter quits work.Until when having new chemical feeding points to need dosing, system just repeats above
Control.
By this full automatic control mode, the cost of investment of engineering equipment will be greatly reduced.
Above-described embodiment is to illustrate taking a dosing pump as a example.In other embodiments, automatic dosing apparatus can wrap
Include multiple above-mentioned dosing pumps, the conveying of each dosing pump is from the extremely different main pipeline of the different agents of each medicament source, Mei Yizhu
Multiple laterals are connected with pipeline.Each medicament source can be made up of a medicament storage case 21 respectively.
In above-described embodiment of the present utility model, at least part of automatic valve is metering valve, to realize the control of chemical feeding quantity.
Name an actual application examples advantage of the present utility model to be described.
The former engineering of certain project adopts traditional medicine machine, equipped with sulphuric acid chemical feeding points 5, sodium hydroxide chemical feeding points 5,
Oxidant chemical feeding points 2, reducing agent chemical feeding points 2, coagulant chemical feeding points 4 and flocculant chemical feeding points 4,22 add altogether
Snack made with traditional Chinese medicines.
Change using after medicine machine of the present utility model, its cost of investment and its comparison such as table 1 below.
Table 1 this utility model processes actual industrial waste water investment ratio
Compared by upper table, this project adopts the equipment investment cost savings after improving more than 60%, greatly reduces
The cost of investment of enterprise.
, in addition to being applied to field of waste water treatment, the same medicament that also apply be applicable to beyond wastewater treatment is many for this utility model
The chemical reaction system that point adds.
Although this utility model to describe with reference to current specific embodiment, ordinary skill in the art
Personnel are it should be appreciated that above embodiment is intended merely to this utility model is described, without departing from this utility model spirit
In the case of also can make various equivalent change or replacement, therefore, as long as in spirit of the present utility model on
State the change of embodiment, modification all will fall in the range of following claims.
Claims (6)
1. it is characterised in that including dosing pump and multiple automatic valve, the conveying of this dosing pump is derived from medicament to a kind of automatic dosing apparatus
To a main pipeline, each automatic valve is separately positioned on the lateral of corresponding chemical feeding points the medicament in source, is wherein used for conveying together
The lateral of one medicament is all connected on this main pipeline, the control of the dosing pump control signal that this dosing pump changes in frequency
Under, control the pressure in this main pipeline.
2. automatic dosing apparatus as claimed in claim 1 are it is characterised in that also include pressure transducer and converter, this pressure
Pressure in this main pipeline of force sensor measuring simultaneously provides pressure detecting signal to this converter, and this converter is examined according to this pressure
Survey signal and obtain this dosing pump control signal.
3. automatic dosing apparatus as claimed in claim 2 are it is characterised in that this converter comprises pid controller and executor,
This pid controller obtains fortune according to the difference of this pressure detecting signal actual pressure value being comprised and the target pressure value setting
Calculate result, this executor generates this dosing pump control signal according to this operation result.
4., it is characterised in that including this dosing pump multiple, each conveying is from each for automatic dosing apparatus as claimed in claim 1
The different agents of medicament source, to different main pipelines, each main pipeline are connected with this lateral multiple.
5. it is characterised in that also including controller, this controller conveys dosing to automatic dosing apparatus as claimed in claim 1
Control signal is to each automatic valve.
6. automatic dosing apparatus as claimed in claim 1 are it is characterised in that at least part of automatic valve is metering valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620679158.0U CN205920328U (en) | 2016-06-30 | 2016-06-30 | Automatic chemical feeding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620679158.0U CN205920328U (en) | 2016-06-30 | 2016-06-30 | Automatic chemical feeding equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205920328U true CN205920328U (en) | 2017-02-01 |
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ID=57874299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620679158.0U Active CN205920328U (en) | 2016-06-30 | 2016-06-30 | Automatic chemical feeding equipment |
Country Status (1)
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| CN (1) | CN205920328U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902805A (en) * | 2017-12-24 | 2018-04-13 | 玉林市玉州区万通华信科技服务部 | A kind of textile waste processing equipment |
| CN108285199A (en) * | 2018-03-28 | 2018-07-17 | 黄河勘测规划设计有限公司 | Repair system and medicament diffusion system after water storage river rain |
| CN108319129A (en) * | 2018-01-24 | 2018-07-24 | 江苏国信靖江发电有限公司 | Ammonification method, apparatus, equipment and the storage medium of condensate system |
| CN108592171A (en) * | 2018-04-25 | 2018-09-28 | 国网上海市电力公司 | A kind of combined supply system auxiliary chemicals dosing plant |
-
2016
- 2016-06-30 CN CN201620679158.0U patent/CN205920328U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902805A (en) * | 2017-12-24 | 2018-04-13 | 玉林市玉州区万通华信科技服务部 | A kind of textile waste processing equipment |
| CN108319129A (en) * | 2018-01-24 | 2018-07-24 | 江苏国信靖江发电有限公司 | Ammonification method, apparatus, equipment and the storage medium of condensate system |
| CN108285199A (en) * | 2018-03-28 | 2018-07-17 | 黄河勘测规划设计有限公司 | Repair system and medicament diffusion system after water storage river rain |
| CN108592171A (en) * | 2018-04-25 | 2018-09-28 | 国网上海市电力公司 | A kind of combined supply system auxiliary chemicals dosing plant |
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| GR01 | Patent grant |