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 Milton law metering pump agent

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    Henan Qingshi environmental protection equipment Co., Ltd

    Contact: Mr. Duan

    Tel: 18037579877

    Address: no.1601, building 9, No.220 Jinsuo Road, high tech Zone, Zhengzhou, Henan Province

    Engineering Department 1: Wang Gong

    Tel: 19939136330

    Engineering Department 2: Sun Gong

    Tel: 15037255

    Instruction manual of dosing device

    Release time: 2020 / 9 / 15 16:24:54 Author: Henan Qingshi environmental protection equipment Co., Ltd

    1, Composition of dosing device:

    The dosing device is composed of solution tank, agitator and valve. Generally equipped with two metering pumps, one for standby and one for use, to ensure maintenance and replacement of accessories without shutdown.

    The main components of the nutrient solution feeding device are as follows:

    1, Solution tank two , agitator three , level gauge four , metering pump five , safety valve six Y Type a filter seven , pulse buffer eight , ball valve, globe valve, check valve nine , pressure gauge ten , pipe.

    explain:

    The brand of diaphragm metering pump is Milton law , model GM0090PQ1MNN , flow 85L/H The pressure is 0.7MPa, Motor power is 0.25Kw.

    The mixer is composed of motor, reducer and mixing rod. The motor power is 1.1Kw, speed three hundred

    All the fittings are made of carbon steel.

    Solution tank adopts PE Material, wall thickness 6mm, capacity 2000L.

    Safety valve, back pressure valve, pressure gauge, diaphragm pulse damper Y The diameters of all filters are DN15, The material is UPVC

    The control cabinet is a passive node, which can control the switch remotely.





    2, Use of dosing device

    Users can accurately add the prepared solution through the metering pump.

    1, Connect the dosing device and check each interface valve for leakage.

    2, Connect the metering pump

     A, Open the electric control cabinet and connect the motor power line of the metering pump to the corresponding interface terminal.

     B, Turn on the operation switch to start the agitator, and fix the junction box after the motor rotates correctly.

    3, Close the drain valve. Fill the barrel with the solution in proportion.

    4, Open the valve of the dosing system and start the metering pump.

    5, The dosing device is equipped with two dosing pumps, one for standby and one for use.

    6, The inlet of the dosing pump is provided with Y Type a filter to prevent large particles from mixing into the metering pump.


    3, Maintenance of dosing device

    one The pipeline of the dosing device should be kept unblocked at any time. Check the connection parts, filters, inlet and outlet of the device from time to time, and observe whether there is sediment in these parts. If these symptoms are found, they should be cleaned up in time.

    two Regularly check whether the feed inlet of the metering pump is blocked, and regularly clean the pipeline and filter to prevent blockage.

    three Regularly check the mixing device to see whether the mixing shaft rotates flexibly, whether the impeller is twisted or deformed, and whether the coupling sleeve is loose, so as to avoid excessive shaft torque and consumption of mixing power. If there is any damage, it should be replaced in time.

    four Check the safety valve, pressure gauge and pipeline valves regularly to avoid leakage. Standby pump and use pump should be used alternately to avoid long-term start-up or shutdown of the same pump.

    What problems should be paid attention to during the operation of dosing system ?

    In order to ensure the treatment effect, the following points should be paid attention to during the operation of dosing equipment.

    (1) Ensure that the equipment is in good condition and the chemicals are sufficient.

    (2) In order to ensure that the dosing device meets the process requirements.

    (3) Ensure that the quality standard of the chemicals meet the process requirements.

    (4) Regularly inspect the quality of raw sewage to ensure that the dosage meets the requirements of water quality change and effluent.

    (5) The concentration of drug storage tank and dosing tank should be explained clearly when handing in.

    (6) Check the dosing tube frequently · To prevent pipe blockage or fracture and ensure the normal operation of the pumping system.

    (7) When the flow is cut off, check it as soon as possible




    4、 Common faults and solutions of dosing device:

    ① The inlet pipeline is blocked or the resistance is too large: dredge the inlet pipeline and take corresponding measures to reduce the resistance.
    ② Air entering at the connection of inlet pipeline: tighten the connecting screw thread or sealing interface.
    ③ Packing leakage is serious; tighten or replace packing.
    ④ There is air in the pipeline inside the pump body: eliminate the air.
    ⑤ Check valve seat, clean or replace valve ball.
    ⑥ Sealing gasket leakage at the inlet and outlet check valve: check the sealing surface or replace the sealing ring.
    ⑦ The make-up valve does not make up oil, the oil is insufficient, and the oil replenishment is frequent or leaking : Adjust the spring tightness of the make-up valve or repair the sealing surface of the make-up valve, clean and replace the steel ball.
    ⑧ The safety valve takes off frequently: adjust the spring tightness, find out the reason and take measures to eliminate it.
    ⑨ The sealing of the plate in the diaphragm cavity is not tight: tighten the screw at the end of the pump head or find out the cause to eliminate it.
    ⑩ Three clean oil, hydraulic valve not working properly.
    In order to avoid the failure of dosing device, the safety valve, pressure gauge and pipeline valves should be checked regularly to avoid failure




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