Model Meaning

Product Overview
The 1W single-stage direct connection vortex pump has the advantages of simple structure, safe and reliable use, easy maintenance, small size, and light weight. This product has stable and reliable performance, reaching the advanced level of similar domestic products. Due to the above characteristics, the W-type single-stage direct connected vortex pump produced by our factory has gained the support and trust of a large number of user departments across the country. (Material: stainless steel, cast iron)

Product Features
The 1W series direct connected single-stage vortex pump has a compact structure, beautiful appearance, small volume, low noise, reliable operation, and easy use and maintenance. It can be widely used in chemical, pharmaceutical, petroleum, electroplating, food, film photography and printing, scientific research institutions, national defense industry and other units to pump acid, alkali solution, oil, rare and precious liquids, venom, volatile liquids, as well as supporting circulating water equipment and filter machines. Especially for the pumping of liquids that are prone to leakage, flammable, and explosive, this pump is more ideal.

structural diagram

	1	Motor shaft extension	9	inner diaphragm
	2	motor	10	sales
	3	pump body	11	inner diaphragm
	4	Axle lining ring	12	impeller
	5	water deflector	13	Joint shaft
	6	key	14	impeller key
	7	cover pressing	15	O-ring
	8	Flexible graphite filler	16	pump cover
The 1W series vortex pump adopts a direct connection structure between the pump and the motor, with a horizontal inlet and a vertical upward outlet. From the pump end, the pump rotates counterclockwise. The impeller can slide freely on the cantilever shaft and automatically adjust the clearance between the two sides of the impeller during operation. The outer partition can be removed together with the impeller through the two screw holes on the impeller. The impeller and inner partition are made of 9-4 aluminum iron bronze, the shaft is made of stainless steel, and the packing is made of a new sealing material flexible graphite. Long pumps have stable performance, simple structure, and easy disassembly and assembly.

purpose
The 1W series direct connected single-stage vortex pump is used for pumping clean water and liquids with physical and chemical properties similar to small ones. The liquid temperature should not exceed 60 ℃, and it is commonly used in the matching of small boiler feedwater. It has been widely used in various industrial sectors such as shipbuilding, textile, chemical, metallurgical, machinery manufacturing, aquaculture, fixed fire stabilization, heat exchange units, and agricultural remote sprinkler irrigation.

performance parameters

Precautions
1W2.5-12 single-stage vortex pump:
1. Before starting the pump, it is necessary to fill the pump and inlet pipeline with liquid. If there is no liquid in the pump, it is not allowed to start and operate to avoid biting.
2. Before starting, the outlet valve must be opened to reduce the starting load of the motor. This pump is never allowed to operate with the outlet valve closed.
3. There must be no particles or impurities mixed in the conveyed liquid to prevent them from entering the pump and damaging the impeller.
4. The filling chamber should maintain normal water leakage, generally with small drops.
5. During pump maintenance, in addition to replacing vulnerable parts, it is generally necessary to replace the bearings of the matching motor.
6. When the pump needs to operate continuously at a flow rate lower than the rated flow rate, the reflux method can be used (a portion of the liquid is refluxed from the pump outlet to the inlet, and a valve is used to control it during this period. At this time, the outlet valve can be fully opened). Do not directly close the outlet valve to prevent the motor from operating under overload.

Start, stop, and run
Start and stop
1. For W-type split pump Firstly, check if there is calcium based grease inside the bearing body If stored for too long The bearing end cover should be opened for inspection Check if it is of poor quality If any deterioration is found The oil should be changed again before starting.
2. Rotate the coupling (for direct coupled pumps, remove motor fan blades 5 and rotate the fan blades) After confirming that the rotor components rotate smoothly and evenly Use a spirit level to check the levelness of the unit After leveling Tighten the nuts appropriately to connect with the foundation.
3. Measure the insulation strength of the motor If it is lower than 5M Ω, it may be due to the motor being damp or damaged. If it's just damp After the motor has been running for a period of time, it can drive the tide by itself; otherwise The electric motor must be repaired or replaced To avoid damage to the pump caused by poor operation.
4. Test start-up: jog the electric motor Adjust the motor direction to meet the requirements.
5. Open the suction pipeline valve Inject the liquid into the pump body. The installation position of the pump is higher than the horizontal position A bottom valve can be installed at the suction pipe end Close before starting Fill the pump casing with the pumped liquid (for those with a short suction path, start washing water for the first time. Afterwards, due to the remaining liquid in the pump casing, there is no need to refill).
6. Open the pressure pipeline valve Starting motor Open the pressure gauge Adjust the valve on the extrusion pipeline Adjust the pressure gauge reading to the appropriate level. Do not allow the pump to operate with the valve closed or with minimal flow.
7. When parking First, turn off the pressure gauge Stop the electric motor Then quickly close the valves of the extrusion and suction pipelines.
8. Short term parking If the ambient temperature is below the freezing point of the liquid To empty the liquid. Long term parking The pump trench should be properly stored after washing and oiling.
operation
1. During operation Pay attention to the operation status of the unit Especially check if the temperature of the motor is too high For split type pumps, it is also important to note that the bearing temperature should not exceed 70 ℃. For the former The main solution is to check if the pipeline is blocked or if the valve is open Excessive pressure inside the pump: The latter mainly depends on whether the calcium based butter is properly filled Whether the bearings are damaged or the motor and pump are not concentric.
2. If a fault is found, work should be stopped immediately and checked.

Fault causes and troubleshooting methods