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                • Your present location: Home >> Knowledge of Pumping Station >>

                  Emulsion Pump Workers Should Know

                  Source: xe1x.com Author: admin Date: 2017-08-10 18:08 heat:
                  Emulsion Pump Workers Should Know
                  General provisions
                  1. Emulsion pump operation drivers must pass training, pass the test and obtain a pass before they can operate with a certificate.
                  2. The emulsion pump station should be equipped with two pumps and one tank. Both the emulsion pump and the emulsion tank should be installed to a degree. The position of the emulsion tank should be more than 100? Higher than the pump body. Under normal conditions, one pump works and one is standby or inspected.
                  3. Electrical equipment such as switches, motors, buttons, and junction boxes should be installed in a dry and safe place without water. If it cannot be avoided, cover it properly.
                  4.When the motor and the switch are located close to 20 , when the gas concentration reaches 1.5%, the operation must be terminated and the power must be cut off; when the gas concentration drops below 1%, the power can be sent to start the pump again.
                  5.Pump stations with automatic dosing device should keep the automatic dosing device applied. Water quality should be tested regularly to ensure that the dosing water is clean and in compliance with regulations.
                  6.The liquid supply pipeline should be neatly suspended to ensure that the liquid is delivered and the liquid returns smoothly.
                  7. The driver shall cooperate with the regular inspection and inspection according to the following requirements;
                  ① Keep scrubbing oil and dirt once per shift;
                  ② Persist in changing the filter core once a day;
                  ③ The performance of the high-down pressure holding device is checked and evaluated once a week by the dedicated management staff;
                  ④ Keep cleaning the filter every 10 days;
                  ⑤ Clean the emulsion tank at least once a month;
                  ⑥ Various maintenance devices are inspected once a month by a dedicated management staff;
                  ⑦ Water quality is tested once a quarter;
                  ⑧ The filter should rotate 1 to 2 times per shift in a certain direction.

                  Preparation, inspection and treatment (1) Preparation:
                  ①Common tools: wrench, pliers, thermometer, refractometer, etc .;
                  ② Necessary spare parts: lead wire, rags, oil cans, oil drums, pipe joints, U-shaped pins, high-pressure rubber hoses, etc .;
                  ③ grease: lubricating oil, mechanical oil, emulsified oil, etc.
                  (2) Inspection and handling After the driver takes over the shift, pull the master switch handle to the cut-off position and lock it, and perform the inspection according to the following request;
                  ① The safety of the pumping station and its adjacent roadways and whether there is water dripping;
                  ② Various equipment of the pumping station are clean and hygienic;
                  ③ Whether the connecting bolts of all components are complete and strong, and the screws of the pump plunger inspection cover must be carefully inspected;
                  ④ Whether the oil level and seal of the reducer meet the requirements;
                  ⑤ Whether the connection of the pipe joint from the pump station to the working surface is firm and leaking;
                  ⑥ Whether the handles of each shut-off valve are maneuverable and reliable, whether the suction valve, manual unloading valve and working surface return valve are in the open position, whether the shut-off valve for supplying liquid to the working surface is in the closed position, and whether various pressure gauges are complete, complete, Action sensitive
                  ⑦Emulsification of oil, soap, precipitation, discoloration, odor, etc .; use a refractometer to check whether the concentration ratio of the emulsion meets the requirements; whether the liquid level is at the 2/3 height of the tank;
                  是否 Whether the pressure of the water inlet of the dosing water is above 5 100PA;
                  是否 Whether the vent hole cover on the emulsion tank and reducer is unblocked;
                  是否 Check whether the motor, coupling and pump head are turned by hand.

                  (3) Loosen the air release plug of the suction chamber of the pump, and tighten it after the air in the suction chamber is exhausted and discharged. Close the control switch, jog the motor, and check whether the rotation direction of the pump is consistent with the direction of the arrow mark on the casing.
                  Start the motor, slowly close the manual unloading valve to gradually increase the pump pressure to the rated value, and then check it according to the following request. Invent the problem and deal with it in time, otherwise it will not work.
                  ① Whether the pump runs stably and whether the sound is normal, centrifugal pump;
                  ② Whether the opening and closing pressure of the unloading valve and safety valve meet the requirements;
                  ③Whether the dust collector of the filtering station is normal, and whether the pressure difference between the inlet and outlet pressure guidance is between 1.5-3.0MPA;
                  ④ Whether the ammeter and voltmeter are normal and correct;
                  ⑤ Whether the plunger lubrication is good and the gear box lubrication pressure is above 2 10PA;
                  ⑥ Whether all joints and seals are thorough and leak-free;
                  是否 Is the automatic liquid level switch and low level shield switch in the emulsion tank sensitive and reliable?
                  是否 Whether the control buttons, signals, and communication devices are sensitive and reliable.
                  3. Operation and precautions After receiving the driving signal for the working surface, shout to the working surface: "The pump is turned on!", Then overdrive the motor and slowly open the stop valve on the liquid supply line to the working surface. Apply fluid to the work surface.
                  Note the following during operation:
                  ① Display of various instruments; ② Whether the sound of the machine is normal;
                  ③ Whether the temperature of the machine exceeds the limit;
                  ④ Whether the liquid level in the emulsion tank is within the prescribed range;
                  ⑤ Whether the plunger is lubricated and the seal is good.

                  When problems are found, you should contact the working surface in time, stop the pump and deal with the sewage pump.
                  Stop the pump immediately when you invent one of the following conditions:
                  ① abnormal sounds and odors;
                  ② The temperature exceeds the requirements;
                  ③ The pressure gauge indicates abnormal pressure;
                  ④The temperature of the emulsion exceeds the requirement, or the liquid level in the emulsion tank is lower than the specified position, and the active dosing device has not started
                  ⑤ Failure of control valve, runaway, submersible pump;
                  ⑥ The filter cannot be filtered if it is damaged or blocked;
                  液 The liquid supply pipeline is cracked and disconnected, and a large amount of liquid is discharged.
                  Both the accidental shutdown and the shutdown shutdown should be operated in the following order:
                  ① Open the manual unloading valve and fire pump to make the pump run at no load;
                  ② Closed high pressure liquid supply valve and pump with suction valve;
                  ③ Press the end button of the pump and pull the switch to the power-off position.
                  Precautions:
                  ① The signal must be confirmed. If the signal is unclear, do not drive;
                  ② When repairing or replacing important liquid supply pipelines, the pump should be stopped, the shut-off valve of the main pipeline should be closed, and the hydraulic components under pressure should be repaired or replaced;
                  ③ When the liquid level in the emulsion tank is lower than the specified lower limit, the automatic liquid dispensing device of the pumping station should start dispensing; the pumping station without the active liquid dispensing device should be manually dispensed in a dedicated container. When mixing liquid, emulsified oil should be mixed in water to prevent water from being mixed in emulsifiable concentrate. Proportioning concentration shall meet the requirements;
                  ④ Do not open the lead seal of the unloading valve, safety valve, accumulator and other components without authorization and adjust the operating pressure of the component;
                  ⑤ Under no circumstances should the liquid return stop valve of the pumping station be closed;
                  ⑥ Try to use the same middle brand and emulsified oil produced by the same manufacturer to prepare emulsion.
                  After each dosing, the refractometer should be used to check the concentration of the emulsion. If it does not meet the requirements, it should be adjusted until it meets the requirements. It is necessary to regularly test and determine the water quality, and its pH value, chloride, sulfate and mechanical impurities must not exceed the regulations;
                  ⑦Except for the contactor contact sticking, which can be used to switch off the pump, in other cases, only push the button to stop the pump.

                  4, tail sweep work

                  Stop the pump immediately after receiving the stop command and the pump stop signal from the squad leader, and set the holding valves to non-working status.
                  Clean the dust on the switch, motor, pump body and emulsion tank, water pump.
                  After explaining the situation to the driver, fill in the operation and shift records. Emulsion pump station daily inspection and protection shift inspection (1) Clean up the debris around the pump station, control the dust and oil on the equipment, and keep the pump station and the emulsion tank clean.
                  (2) Check the bolts and connecting parts of the pump station, especially the bolts on the suction side and discharge side of the pump head must not be loose.
                  (3) Check all pipelines and joints, and handle the leakage in time.
                  (4) Turn the handwheel of the slot filter twice.
                  (5) Check the lubrication condition and oil level of the pumping station, magnetic pump, and find that the oil quantity is insufficient to make up in time.
                  (6) Review whether the actions of various maintenance devices are sharp and reliable, and chemical pumps.
                  (7) Check the amount of emulsified liquid in the squeezing solution, and make up for the shortage in time. Use a pocket refractometer to check the concentration of the emulsion. The ratio should be 3% ~~ 5%.
                  (8) Adjust the nut of the leaking plunger seal.
                  (9) Check the effectiveness of the unloading valve, and adjust if it fails.
                  Daily inspection (1) Repeated inspections.
                  (2) Check whether the pressure gauges of the pumping station are accurate.
                  (3) Check whether the positions of various valves of the pumping station are accurate and their actions should be sharp and reliable.
                  (4) Check the joint screws and pins of each part firmly; tighten the connecting rod bolts with a torque of 120N? M.
                  (5) Check the oil quality and oil level of the crankcase and reducer.
                  (6) Check the electrical system and electrical maintenance devices of the pumping station.
                  (7) Check whether the gear pump and rotation direction are accurate and the pressure relay works reliably.
                  (8) Review and deal with the leakage and oil leakage of V-shaped seals, axial oil seals, and guide seals.
                  (9) Test the pump flow and check the reason for the low pump flow.
                  (10) Review and clean the pump station filters, filters and magnetic rods.
                  Weekly inspection (1) Repeat the entire contents of the daily inspection.
                  (2) Calibration or replacement of pump station pressure gauges with large errors and damage.
                  (3) When measuring the flow of the high-pressure pump, it should not be less than 25L / MIN.
                  (4) Adjust the pressure of the relief valve, safety valve, bypass valve and regulating valve, and carry out experiments, diaphragm pump.
                  (5) 3 ~ 5 performance tests of pumping stations, various valve groups and shielding devices.
                  (6) Check if the suction and discharge valves of the pump are well sealed.
                  (7) Debug and dispose of active liquid dispensing and milk makeup.
                  (8) Inspect the plunger for serious scars, burrs, or cracks.
                  (9) Measure the pressure of the accumulator. If it is lower than 60% of the working pressure of the pumping station, it should be inflated.
                  (10) Check the wear of the worm gear and worm.
                  (11) Check and deal with the wear of the crankcase and various transmission parts, and secure the bearing pad screws, self-priming pumps, and nut locking devices should not become loose.
                  (12) Replace oil seals, V-shaped seals, lip seals and "O" -shaped seals that are worn or damaged.
                  (13) Check and deal with the electrical system of the pumping station and see if the action of the experimental cover is sensitive and reliable.
                  1. Monthly inspection (1) Repeated weekly inspection.
                  (2) Check whether the installation of the pumping station system is stable after moving. The tilting angle of the pumping station should be within 5 -10 .
                  (3) Change the lubricating oil and emulsion of crankcase and emulsion tank and clean them.
                  (4) Check the clearance between the crankshaft and the bearing bush, connecting rod, connecting rod bushing, slider, sliding pin and other moving parts, and repair the bushing and secure the bearing screws.
                  (5) Check whether there is any deviation in the concentricity of the measuring motor and the pump body coupling. The gap between the couplings at both ends should be within 3 ~ 5MM.
                  (6) Experiment with the electrical system of the pumping station and deal with the problems of invention.
                  Keywords: Emulsion Pump
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