IH type chemical pump corrosion-resistant centrifugal pump

IH stainless steel chemical pumpDisassembly and Assembly

IH250-200-400CDismantling of chemical centrifugal pump:

Due to the use of an extended coupling, there is no need to disassemble the inlet and outlet pipelines, pump body, and motor when disassembling the pump. Only the middle coupling in the extended coupling needs to be removed to disassemble the rotor components for repair and maintenance.

1. Remove the drain pipe plug on the pump body and the drain pipe plug on the suspension body, and drain the liquid inside the pump and the lubricating oil inside the suspension body. (Note: If there are additional pipelines on the pump, they should also be removed).

2. Disconnect the connection between the pump body and the intermediate bracket, and remove all rotor components such as the intermediate bracket, suspension components, and pump cover from the pump body together.

3. Remove the impeller nut, remove the impeller and key.

4. Remove the pump cover, coaxial sleeve, mechanical seal end cover, and mechanical seal from the shaft together. Be careful not to slide the shaft sleeve relative to the pump cover, and then remove the mechanical seal end cover. Remove the mechanical seal together with the shaft sleeve, and then disassemble the shaft sleeve and mechanical seal.

If the seal uses packing, the shaft sleeve can be directly removed from the pump cover, and then the packing cover, packing, and packing ring can be removed in sequence.

If the seal adopts a special structure, attention should be paid to different disassembly methods.

5. Remove the middle bracket and suspension bracket.

6. Remove the pump coupling and key.

7. Remove the dust discs at both ends of the suspension body and the front and rear covers of the bearings, and then remove the shaft and bearings from the suspension body together.

8. Remove the bearing from the pump shaft.

IHChemical pump assembly

Reverse the disassembly procedure.

IH chemical pump starting, running, and stopping

1.IHchemical pumpPreparation before starting

1) Before starting, clean the pump and the site thoroughly.

2) Check if the lubricating oil level in the bracket is appropriate (the oil level is about 2mm from the centerline of the oil level gauge) and if the oil level gauge is intact.

3) Before connecting the coupling, check the direction of the prime mover and connect it to the pump's direction arrow *.

4) After installing the mechanical seal or packing and coupling, the pump shaft can be manually rotated without any rubbing, and the protective cover of the coupling should be installed properly.

5) When using the pump with suction, it should be filled or evacuated before starting; When using the pump in reverse flow, fill the pump with the conveyed liquid before starting, remove the air from the pump, and then close the gate valve of the discharge pipe.

6) Before starting, check if the basic screws are loose. Whether the gland is skewed, and the supply of lubricating oil and cooling water.

2. IH chemical pump start-up

1) Close the inlet and outlet pressure (or vacuum) gauges and outlet valves (if there is a bypass pipe, it should also be closed at this time). Start the motor (first jog and confirm that the pump direction is correct before starting formal operation), then open the inlet and outlet pressure (or vacuum) gauges. When the pump reaches normal speed and the instrument indicates the corresponding pressure, slowly open the outlet valve and adjust it to the required working condition. When the discharge pipeline is closed, the continuous working time of the pump cannot exceed 3 minutes.

2) During the starting process, attention should be paid to the power reading of the prime mover and the vibration of the pump at all times. The vibration number should not exceed 0.06 millimeters, and the measuring part is the bearing seat.

3) Sealing condition: The mechanical seal should have no leakage or heating phenomenon, and the packing seal should be in a continuous dripping state.

3.IHchemical pumprun

1) Regularly check the heating condition of the pump and motor (the temperature rise of the bearings should not exceed 75 ℃) and the oil supply of the oil level gauge. Generally, after every 1500 hours of operation, all lubricating oil should be replaced.

2) Do not use suction valves to regulate flow to avoid cavitation.

3) Pumps should not operate continuously at flow rates below 30%. If continuous operation is necessary under these conditions, a bypass pipe should be installed at the outlet to discharge excess flow.

4) Pay attention to whether there is any noise during the operation of the pump. If any abnormal state is found, it should be eliminated or stopped for inspection in a timely manner.

4.IHchemical pump停止

1) Slowly close the gate valve of the discharge pipeline (if the pump is used in reverse flow, also close the gate valve of the suction pipeline), and turn off the switches of various instruments.

2) Cut off the power supply

3) If external drainage is used for sealing, the external drainage valve should also be closed.

4) If the ambient temperature is below the freezing point of the liquid, the liquid in the pump should be drained to prevent freezing and cracking.

5) If parked for a long time without use, in addition to draining the corrosive liquid inside the pump, all components should be disassembled and cleaned, especially the sealing chamber. The pump should be disassembled, cleaned, and reinstalled. In addition to applying oil and rust prevention treatment and sealing the pump inlet and outlet, regular inspections should also be conducted

model
Pump inlet outlet impeller
mmmmmm

Import ←
mm

Export →
mm

traffic
m 3 /h

head
m

Equipped with motor

Impeller diameter mm