dosing system spec &op

7/29/2019 Dosing System Spec &Op

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Dosing System


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(specification)

JIANGSU YUANYANG SHUICHULI

CO.,lTD


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Dosing system specification

Dosing system operating instructions


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Dosing system specification

1. Usage

Dosing device is a kind of integration of equipment that a including

dosing, mixing liquid, conveying liquid, automatic control. It is

widely used in the powder plant raw water, boiler water, oil groundgathering dehydration processing systems, various petrochemical

dosing system and wastewater treatment systems. Doing including

coagulant, pH solution, phosphate, liquid ammonia, lime, oxidants,

reducing agents, water stabilizer (inhibitor), inhibitor, liquid

insecticides.

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2. the structure:

the composition of dosing device including the shaft, blender, work

bridges, tanks and motor, etc.

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3. Note

a. The user must specify the specifications, technical parameters

and materials and civil engineering diagram when ordering the

equipment.

b. If your water quality is constantly changing, you need notify us in

advance, and we can make the equipment adjustable.

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4. Preparation before installation.

a. check all parts are in set (including valves, fittings, etc.), if there

are some parts damaged during the transportation? You need to

adjust and repair.

b. check the civil dimensions and embedded parts meet the

requirements, and the install location is correct.

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5. Installation and commissioning of the equipment

a. Lift the equipment according to the drawings, adjusted to a

proper position and then fixed.

b. Install the inlet and outlet pipe according to the drawings one by

one, and make sure the pipe connection are sealing well and not

leak, the valve can be operated easily.

c. Install the metering device (metering pump) in the right place,

Install the inlet and outlet pipe according to the drawings and makesure they are in the right connection.

d. Inject water to the dissolving tank and check that if there is any

leak in the pipe connection place, and solved in time.

e. Start power motor of the the mixer for test running 2 to 4 hours,

check if is any abnormal, and then put into use.

f. check the motor and gear reducer are overheating or other

anomalies

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6. Usage and maintenance

a. the liquid configuration:

1.) Put appropriate amount of dosage pharmacy to the dissolving

tank, open valve and inject a certain amount of water, and Maintain

the liquid level in the normal range.

2.) Open the mixer, and make sure the dosage pharmacy and water

are fully dissolved the mixed, then turn off the mixer. Open theoutlet valve of dissolving tank and let the mixed liquid inject to the

storage tank.

b. Adjust the flow speed of the metering pump according to the

needs. Then open the metering pump, you can get the quantitative

dosing liquid as requirements.

c. Check if there is any deposit sediment in the dissolving tank and

storage tank, and take it out in time for preventing block thepipeline.

d. Read the instructions before using the metering pumps. You

should make sure that the pressure gauge has been installed on the

outlet pipe of the metering pump, and make sure the output

pressure of the metering pump at its rated pressure, this will make

the measurement was accurate and reliable.

e. Check the bolts and nuts, piping and valves often, to make sure

there is no loose and leak, and solve them in time.


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Dosing system operating instructions

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22.12.2

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Operate Manual of dosing system

1. System Starting

1.1 Check the electrical control cabinet and the pump power is

turned on, and all the devices are in good condition.

1.2 When solution tank running in the low level, the metering pump

should be stopped.

2 Metering pump start and stop.

2.1 There should be clear and no other goods around the pump.2.2 Make sure that the connection screws of the flywheel and

anchor bolts are well fixed, operating the flywheel by hand, it should

be move smoothly.

2.3 The lubricant need to be clear and the height should be 1/3 of

the bearing diameter.

2.4 Make sure the drug are enough in the solution tank.

2.5 Open the inlet and outlet valve of the pump. (Note: Usually,

the valve of the bottom of the solution tank are open,

except pipe system maintenance)

33.1 1

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3.2

3 Metering pump start

3.1 Check the motor power is turned on, and then start the

motor. (WARNING: 1 the motor reverse run will damage the

pump and motor, which does not belongto the scope of warranty. Do not forget to landing the pump


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and equipment.

2 Make sure that the power parameters are in accordance

with the pump motor nameplate parameters, connect the

electric wire according to the electrical wiring diagram and

operation manual3 before running the pump, Check the motor rotation

before running the pump, make sure it is the same direction

with the arrow of motor mounting flange.)

3.2 After the pump is operating normally, you can adjust the pump

output to achieve the required flow.

44.1 4.2

55.1 5.2 5.3

4 Metering pump stop

4.1 Stop the motor.

4.2 When the pump is under repair, close the inlet and outlet of

valves of the pump, and Isolate power supply, hang dangerous

nameplate.

5The standby pump start and stop.

5.1 Open the inlet valve of standby pump, switch to contact of thedosing unit.

5.2 Check the motor power, and start the motor.

5.3 After the standby pump is operating normally, stop the main

pump and you can adjust the pump output to achieve the required

flow.

66.1 1/2 6.2

6 Drug preparation

6.1 Open the water inlet valve of the solution tank, and turn of the

valve when water level achieve to 1/2 of the solution tank.

6.2 Open the drug inlet valve of the solution tank, inject drugs to

the solution tank and start the mixer. And stop running when the

drug is completely dissolved.


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System operation and maintenance.

1 Check the system running regularly, and should increase

inspection times if equipment failure happens

2 Closely monitor the dose of the drug, make sure automatic

dosing equipment are in normal operation.

3 Add the drugs timely when the solution tank liquid are in low

level.

4 Before start the dosing pumps, you need to open the inlet and

outlet valve first. Before closing the inlet and outlet valves, you

need to stop the dosing pumps first, this can avoid to damage

dosing pump.

5 Shutdown the pump immediately if it our of order, and start the

standby pump.

6the operator should wear the necessary labor protection supplies

in operation, to prevent splashing into eyes.


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Dosing system failure notices and how to solve it.

No.

Failure

Reason How to solve it

1

Pump start

failure

Wire

connect error

check all the connection of

electric wire

low voltage

check the reason and make the voltage to

the normal level

START/STOP, didnt

press START/STOP

START/STOP, press START/STOP

2 Cant

absorb the

liquid

air in thepipe

, connect the pipe correctly

Valve was

installed wrong

, Re install the valve

The pump

stroke distance is too short

100%

make the pump run under

100% stroke distance

/

the outlet valve was

blocked

apart, inspection and

cleaning

3

Outlet

flow not

stable

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the outlet valve was

blocked

apart, inspection and

cleaning

,

Bubbles in the pump t

exhaus

Gasket Damage replace the Gasket

4

Liquid leak

Valve an

d the connector is not tight

tight

Pump connecti

on is not tight

tight the pump head

Gasket Damage replace the Gasket

dosing system spec &op

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