CN215439797U - PAC dosing device - Google Patents

Abstract

The application discloses PAC charge device includes: the device comprises a medicine storage pool, a medicine dispensing pool, a reclaimed water pipeline, a medicine outlet pipeline, a rotary spray head and a PLC (programmable logic controller), wherein the medicine storage pool is connected with the medicine dispensing pool through a medicine inlet pipeline; the reclaimed water pipeline is used for conveying reclaimed water into the dispensing pool, the medicine outlet pipeline is communicated with a medicine outlet of the dispensing pool, and a first electromagnetic valve and a first flowmeter are arranged on the medicine outlet pipeline; the tail end of the medicine outlet pipeline is also provided with at least one rotary spray head; the first flowmeter and the first electromagnetic valve are electrically connected with the PLC. Go out the medicine pipeline end in this application and be provided with rotatory nozzle, the PAC medicament of having prepared is carried and is thrown the point of adding, forms fine water column through rotatory nozzle, forms rotatory spraying, makes medicine and water fully contact, reaction. And through setting up the PLC controller, the first solenoid valve of accessible and first flowmeter control volume of throwing, it is extravagant to reduce the medicament, guarantees out the water quality.

Description

PAC dosing device

Technical Field

This application belongs to sewage treatment technical field, concretely relates to PAC charge device.

Background

The intensified phosphorus removal technology combining chemical phosphorus removal and biological phosphorus removal in sewage treatment is generally applied, and coagulants such as PAC (Poly aluminum Chloride) and the like are added to generate insoluble precipitates, and phosphorus in water is removed by removing the insoluble precipitates. The dosage is controlled correctly, which plays an important role in effectively operating the sewage treatment process, reducing the sludge yield and reducing the operation cost.

In the adding process, the existing adding tail end is water flow-shaped water, and cannot be well fused with a water body, so that the medicament is not uniformly contacted, and the phenomena of poor phosphorus removal effect of a local water body and the like exist; in addition, the crystallization and precipitation of PAC medicament sometimes cause pipeline blockage, and the whole device needs to be disassembled and maintained; furthermore, PAC dosing amount cannot be feedback-adjusted in real time, automation control is achieved, resulting in serious waste of the drug and greatly increasing the cost, and therefore, further improvement is required.

SUMMERY OF THE UTILITY MODEL

To the shortcoming or not enough of above-mentioned prior art, the technical problem that this application will be solved provides a PAC charge device that improves medicament reaction efficiency, automatic feedback control.

In order to solve the technical problem, the application is realized by the following technical scheme:

the application provides a PAC charge device, includes: a medicine storage pool, a medicine dispensing pool, a reclaimed water pipeline, a medicine outlet pipeline, a rotary spray head and a PLC controller,

the medicine storage pool is connected with the medicine dispensing pool through a medicine inlet pipeline;

the reclaimed water pipeline is used for conveying reclaimed water into the dispensing pool,

the medicine outlet pipeline is communicated with the medicine outlet of the medicine dispensing pool, and a first electromagnetic valve and a first flowmeter are arranged on the medicine outlet pipeline;

the tail end of the medicine outlet pipeline is also provided with at least one rotary spray head;

the first flowmeter and the first electromagnetic valve are electrically connected with the PLC.

Optionally, the PAC dosing device as described above, wherein an air unit is further provided at the tip, the air unit comprising: the air cylinder is communicated with the tail end through a first air pipeline, the air compressor is connected with the air cylinder, and a second electromagnetic valve is further arranged on the first air pipeline.

Optionally, the PAC dosing apparatus above, wherein the gas cylinder is further provided with at least one pressure sensor, a first pressure gauge, a high pressure safety valve, and/or a manual release valve; and a liquid collecting disc is also arranged at the bottom of the gas cylinder.

Optionally, the PAC dosing apparatus described above, wherein a manual stop check valve is further disposed on the first air duct.

Optionally, in the PAC dosing device of the above, the air compressor is in communication with the air cylinder through a second air pipe, and a manual valve is further disposed on the second air pipe.

Optionally, in the PAC dosing apparatus described above, a dosing pipe is further communicated between the medicine outlet pipe and the rotary nozzle; a third electromagnetic valve electrically connected with the PLC is also arranged on the feeding pipeline;

and/or a metering pump is also arranged on the medicine outlet pipeline and is electrically connected with the PLC;

and/or an impeller is also arranged below the rotary spray head.

Optionally, the PAC dosing apparatus above, wherein the dosing pipeline is further provided with a second pressure gauge, a self-priming pump, and/or a second flow meter.

Optionally, the PAC dosing apparatus described above, wherein a proportional solenoid valve and/or a third flow meter are further disposed on the recycled water pipe.

Optionally, in the PAC dosing apparatus described above, a stirrer is further provided in the dispensing pool;

and/or a gravity sensor is also arranged on the stirrer;

and/or a liquid level meter is also arranged in the dispensing pool;

and/or a fence is also arranged on the dispensing pool.

Optionally, the PAC dosing device described above, further comprising: a total phosphorus concentration determinator and a fourth flow meter, which are arranged in the biological tank; a water outlet pipeline of the plant area is also provided with a water outlet total phosphorus concentration tester; the total phosphorus concentration tester, the fourth flowmeter and the effluent total phosphorus concentration tester are also electrically connected with the PLC; wherein, the rotary spray head is arranged above the biological pond.

Compared with the prior art, the method has the following technical effects:

go out the medicine pipeline end in this application and be provided with rotatory nozzle, the PAC medicament of having prepared is carried and is thrown the point of adding, forms fine water column through rotatory nozzle, forms rotatory spraying, makes medicine and water fully contact, reaction. And through setting up the PLC controller, the first solenoid valve of accessible and first flowmeter control volume of throwing, it is extravagant to reduce the medicament, guarantees out the water quality.

The rotary spray head that the end of offeing medicine set up the straight line and arrange in this application to prepare the air unit. The first air pipeline is connected with the rotary spray head, and the PLC controls the opening and closing of the first air pipeline and the drug administration pipeline. When the first air pipeline is opened, compressed air is formed, the rotating spray head is subjected to air washing, blockage is prevented, and the medicament adding and pipeline safety are guaranteed.

The agitator that sets up in the dispensing pool in this application sets up gravity sensor, whether gravity sensor can monitor blade and agitating unit has drop, wearing and tearing etc..

The PAC dosing automatic regulation system is arranged in the application, a control mode of feedforward and feedback is adopted, the flow rate and the total phosphorus concentration at the tail end (before a dosing point) of a biological pool are respectively monitored through a fourth flowmeter and a total phosphorus concentration tester by the feedforward control, and the PAC dosing flow rate is measured and calculated by a PLC (programmable logic controller); the feedback control is to monitor the total phosphorus concentration of the effluent by a plant area effluent total phosphorus concentration tester so as to measure, calculate and optimize the PAC dosage. The feed-forward and feedback modes are realized by controlling the adding frequency or stroke of the metering pump, so that the waste of the medicament is reduced, and the effluent quality is ensured.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1: the structural schematic diagram of PAC charge device of an embodiment of this application.

FIG. 2: in an embodiment of the present application, a schematic structural diagram of a spin head is shown.

Reference numerals: the device comprises a medicine storage tank 1, a medicine dispensing tank 2, a medicine inlet pipeline 3, a reclaimed water pipeline 4, a liquid level meter 5, a self-priming pump 6, a second flow meter 7, a second pressure gauge 8, a third flow meter 9, a proportional electromagnetic valve 10, a stirrer 11, a gravity sensor 12, a stirring shaft 13, blades 14, a fence 15, a medicine outlet pipeline 16, a filter 17, a metering pump 18, a first electromagnetic valve 19, a first flow meter 20, a feeding pipeline 21, rotary spray heads 21a, 21b, 21c and 21d, a third electromagnetic valve 22, a first air pipeline 23, a second electromagnetic valve 24, an air unit 25, an air compressor 26, an air bottle 27, a second air pipeline 28, a manual valve 29, a first pressure gauge 30, a pressure sensor 31, a high-pressure safety valve 32, a manual discharge valve 33, a manual stop check valve 34, a liquid collecting tray 35, a total phosphorus concentration tester 36, a fourth flow meter 37, a water outlet total phosphorus concentration tester 38 and an impeller 39.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In one embodiment of the present application, as shown in fig. 1, a PAC dosing device comprises: a medicine storage tank 1, a medicine dispensing tank 2, a reclaimed water pipeline 4, a medicine outlet pipeline 16, a rotary spray head and a PLC controller,

the medicine storage tank 1 is connected with the medicine dispensing tank 2 through a medicine inlet pipeline 3;

the reclaimed water pipeline 4 is used for conveying reclaimed water into the dosing tank 2,

the medicine outlet pipeline 16 is communicated with a medicine outlet of the medicine dispensing pool 2, and a first electromagnetic valve 19 and a first flowmeter 20 are arranged on the medicine outlet pipeline 16;

at least one rotary spray head is also arranged at the tail end of the medicine outlet pipeline 16;

the first flow meter 20 and the first electromagnetic valve 19 are both electrically connected to the PLC controller.

In this embodiment, by providing the rotary nozzle at the end of the drug outlet pipe 16, the prepared PAC drug is transported to the dosing point, and a fine water column is formed by the rotary nozzle, so as to form a rotary spray, and make the drug fully contact with and react with the water body. And through setting up the PLC controller, accessible first solenoid valve 19 and first flowmeter 20 control dosage, reduce the medicament extravagant, guarantee the play water quality.

Further, as shown in fig. 2, an impeller 39 is further disposed below the rotary sprayer, wherein the prepared PAC reagent is conveyed to a dosing point, a fine water column is formed by the rotary sprayer and impacts the impeller 39 to form rotary spraying, and the rotary sprayer forms a rotary water column by centrifugal force and reaction pushing in the spraying process, and can be uniformly mixed with the water to be treated in the biological pond, so that the reagent is further fully contacted and reacted with the water.

In the present embodiment, the number of the rotating heads is at least one, and in the present embodiment, the number of the rotating heads is four, which are the rotating head 21a, the rotating head 21b, the rotating head 21c, and the rotating head 21d, respectively.

The rotating spray head is arranged above a biological pool which is described below, so that PAC medicament is added to the liquid to be treated in the biological pool.

An adding pipeline 21 is communicated between the medicine outlet pipeline 16 and the rotary spray head; through the arrangement of the feeding pipeline 21, the rotation and the flow of the conveyed medicament can be conveniently realized, and the arrangement paths of the medicament outlet pipeline 16 and the feeding pipeline 21 can be adjusted according to requirements, so that the adaptability is strong. In the present embodiment, an air unit 25 described below is optionally provided at the end of the dosing pipe 21.

And a third electromagnetic valve 22 is further arranged on the feeding pipeline 21, and the third electromagnetic valve 22 is further electrically connected with the PLC.

A metering pump 18 is further arranged on the medicine outlet pipeline 16, and the metering pump 18 is electrically connected with the PLC; through the setting of the metering pump 18, the amount of the pumped medicament on the medicament outlet pipeline 16 can be intelligently controlled.

The medicine discharge pipe 16 is further provided with a filter 17 for filtering impurities and the like.

Optionally, the medicine outlet pipe 16 is made of UPVC (Unplasticized Polyvinyl Chloride) material and is corrosion-resistant.

In the present embodiment, an air unit 25 is further provided at the end, and the air unit 25 is used for providing compressed air required for air flushing of the rotary spray head; the air unit 25 includes: the air cylinder 27 is communicated with the tail end through a first air pipeline 23, the air compressor 26 is connected with the air cylinder 27, and a second electromagnetic valve 24 is further arranged on the first air pipeline 23. By configuring the air unit 25, the rotary head can be air-washed. When the first air pipeline 23 is opened, compressed air is formed, the rotating spray head is subjected to air washing, blockage is prevented, and the medicament adding and pipeline safety are guaranteed. The second electromagnetic valve 24 is electrically connected with the PLC controller, and can be alternately opened and closed at regular time under the control of the PLC controller.

The gas cylinder 27 is further provided with at least a pressure sensor 31, a first pressure gauge 30, a high pressure relief valve 32, and/or a manual release valve 33. The pressure sensor 31 is used for controlling the start and stop of the air compressor 26. For safety, a high-pressure safety valve 32 and a manual release valve 33 are also arranged on the gas cylinder 27.

The bottom of the gas cylinder 27 is also provided with a liquid collecting disc 35, and the liquid collecting disc 35 is used for collecting leaked or liquefied liquid and preventing the working environment from being polluted by the outflow of the liquid, so that the cleanliness of the working environment is improved.

In this embodiment, a manual cut-off check valve 34 is further provided in the first air duct 23, and the first air duct 23 can be manually controlled by the provision of the manual cut-off check valve 34.

The air compressor 26 and the air bottle 27 are arranged in a communicating manner through a second air pipeline 28, wherein a manual valve 29 is further arranged on the second air pipeline 28.

In this embodiment, in order to prevent the blocking of the feeding end, a first air pipeline 23 is arranged on the feeding pipeline 21, a third electromagnetic valve 22 and a second electromagnetic valve 24 which are controlled by a PLC controller at regular time are respectively arranged on the feeding pipeline 21 and the first air pipeline 23, when the third electromagnetic valve 22 is opened, the feeding pipeline 21 feeds medicine, and the first air pipeline 23 is closed; when the third solenoid valve 22 is closed, the second solenoid valve 24 is opened and the first air duct 23 is flushed with intake air.

And a second pressure gauge 8, a self-priming pump 6 and/or a second flowmeter 7 are/is further arranged on the medicine inlet pipeline 3.

A proportional electromagnetic valve 10 and/or a third flow meter 9 are/is further arranged on the reclaimed water pipeline 4.

A stirrer 11 is also arranged in the dispensing pool 2; the agitator 11 is configured to agitate the medicine in the dispensing tank 2, wherein the agitator 11 includes: a stirring shaft 13 and blades 14, wherein the blades 14 are arranged at the tail end of the stirring shaft 13.

Optionally, a gravity sensor 12 is further configured on the stirrer 11; when the stirring shaft 13 or the blades 14 fall off, the gravity sensor 12 can give an alarm to facilitate timely maintenance.

Optionally, a liquid level meter 5 is further arranged in the dispensing pool 2; the liquid level meter 5 is used for monitoring the liquid level of the dispensing pool 2. When the liquid level of the dispensing pool 2 is lower than a set value, the self-priming pump 6 is started to automatically feed; the proportional electromagnetic valve 10 of the reclaimed water pipeline 4 is opened, and water is automatically fed.

Optionally, a fence 15 is further arranged on the dispensing pool 2, and the fence 15 is arranged to ensure maintenance safety.

In this embodiment, level gauge 5 in the dispensing pond 2 monitors the liquid level, and when the liquid level was less than a certain value, self priming pump 6 and proportional solenoid valve 10 opened. PAC stock solution in the drug storage tank 1 enters the dosing tank 2 through the action of a self-priming pump 6; meanwhile, reclaimed water enters the dispensing pool 2 through a reclaimed water pipeline 4, and the flow of the reclaimed water can be adjusted by the adjusting proportion electromagnetic valve 10, so that the dispensing concentration is controlled.

Further, in this embodiment, the method further includes: a total phosphorus concentration measuring instrument 36 and a fourth flow meter 37, the total phosphorus concentration measuring instrument 36 and the fourth flow meter 37 being provided in the biological tank; a water outlet pipeline of the plant area is also provided with a water outlet total phosphorus concentration tester 38; the total phosphorus concentration measuring instrument 36, the fourth flowmeter 37 and the effluent total phosphorus concentration measuring instrument 38 are also electrically connected with the PLC.

In the embodiment, a PAC dosing automatic regulating system is arranged, a control mode of feedforward and feedback is adopted, the feedforward control is used for respectively monitoring the flow rate and the total phosphorus concentration at the tail end (before a dosing point) of a biological pool through a fourth flowmeter 37 and a total phosphorus concentration determinator 36, and a PLC controller is used for measuring and calculating the PAC dosing flow rate; the feedback control is to monitor the total phosphorus concentration of the effluent by a plant area effluent total phosphorus concentration tester 38 so as to measure, calculate and optimize the PAC dosage. The feed-forward and feedback modes are realized by controlling the adding frequency or stroke of the metering pump 18.

In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The above embodiments are merely to illustrate the technical solutions of the present application and are not limitative, and the present application is described in detail with reference to preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made in the present invention without departing from the spirit and scope of the present invention and shall be covered by the appended claims.

Claims (10)

1. A PAC dosing device, comprising: a medicine storage pool, a medicine dispensing pool, a reclaimed water pipeline, a medicine outlet pipeline, a rotary spray head and a PLC controller,

the medicine storage pool is connected with the medicine dispensing pool through a medicine inlet pipeline;

the reclaimed water pipeline is used for conveying reclaimed water into the dispensing pool,

the medicine outlet pipeline is communicated with the medicine outlet of the medicine dispensing pool, and a first electromagnetic valve and a first flowmeter are arranged on the medicine outlet pipeline;

the tail end of the medicine outlet pipeline is also provided with at least one rotary spray head;

the first flowmeter and the first electromagnetic valve are electrically connected with the PLC.

2. The PAC dosing device of claim 1, further comprising an air cell at the tip, the air cell comprising: the air cylinder is communicated with the tail end through a first air pipeline, the air compressor is connected with the air cylinder, and a second electromagnetic valve is further arranged on the first air pipeline.

3. The PAC dosing device of claim 2, wherein the gas cylinder is further configured with at least one of a pressure sensor, a first pressure gauge, a high pressure relief valve, and/or a manual relief valve; and a liquid collecting disc is also arranged at the bottom of the gas cylinder.

4. The PAC dosing device of claim 2, further comprising a manual stop check valve on the first air duct.

5. The PAC dosing device of claim 2, 3 or 4, wherein the air compressor is in communication with the gas cylinder via a second air conduit, wherein a manual valve is further provided on the second air conduit.

6. The PAC dosing device of any one of claims 1 to 4,

a feeding pipeline is communicated between the medicine outlet pipeline and the rotary spray head, and a third electromagnetic valve electrically connected with the PLC is also arranged on the feeding pipeline;

and/or a metering pump is also arranged on the medicine outlet pipeline and is electrically connected with the PLC;

and/or an impeller is also arranged below the rotary spray head.

7. The PAC dosing device of any one of claims 1 to 4, wherein a second pressure gauge, a self-priming pump, and/or a second flow meter is further provided on the drug inlet pipe.

8. The PAC dosing device of any one of claims 1 to 4, wherein a proportional solenoid valve and/or a third flow meter is further arranged on the reclaimed water pipeline.

9. The PAC dosing device of any one of claims 1 to 4,

a stirrer is also arranged in the dispensing pool;

and/or a gravity sensor is also arranged on the stirrer;

and/or a liquid level meter is also arranged in the dispensing pool;

and/or a fence is also arranged on the dispensing pool.

10. The PAC dosing device of any one of claims 1-4, further comprising: a total phosphorus concentration determinator and a fourth flow meter, which are arranged in the biological tank; a water outlet pipeline of the plant area is also provided with a water outlet total phosphorus concentration tester; the total phosphorus concentration tester, the fourth flowmeter and the effluent total phosphorus concentration tester are also electrically connected with the PLC; wherein, the rotary spray head is arranged above the biological pond.

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