PW type corrosion-resistant horizontal sewage pump

Overview of Stainless Steel Sewage Pump Products

PW and PWF sewage pumps are single-stage, single suction, cantilever centrifugal sewage pumps. The pump suction port is in the axial horizontal direction, and the pump discharge port can be installed in the horizontal or vertical direction as needed. It mainly consists of components such as pump cover, pump casing, impeller, shaft seal, shaft, and bracket. The shaft seal adopts a novel double end mechanical seal structure, and the pump and motor are installed on a common chassis, directly driven by the motor through an elastic coupling. This pump has the advantages of high efficiency, significant energy saving, stable operation, reliable performance, and easy maintenance. All of our products are designed and optimized using computers. Our company has strong technical strength, rich production experience, and comprehensive testing methods to ensure stable and reliable product quality. (Material, cast iron, stainless steel)

Scope of application of stainless steel sewage pump

1. PW ordinary sewage pump can transport sewage, suspended solid particles, long fiber substances, and domestic wastewater. The pump body is made of high-quality cast iron material, and the medium temperature does not exceed 100 ℃.

2. The PWF type corrosion-resistant sewage pump can transport sewage with acidic, alkaline or other corrosive properties, and is widely used in industries such as chemical, petroleum, light industry, food, pharmaceutical, brewing, environmental protection and sewage treatment. The pump body and overcurrent components are made of 304 stainless steel material, and the medium temperature is not higher than 100 ℃.

Technical parameters of stainless steel sewage pump

Flow rate: 36-180m3/h;

Lift: 8.5-48.5m;

Motor power: 4-30KW;

Speed: 960-2950r/min;

Caliber: φ 65- φ 100;

Medium temperature: ≤ 100 ℃.

The significance of stainless steel sewage pump model

Structural Description of Stainless Steel Sewage Pump

This type of pump mainly consists of: pump cover (1), pump body (2), impeller (3), shaft (15), shaft seal body (4), bearing housing (11), and coupling components (see Figure 1: Structural Diagram)

The pump outlet is vertically upward or can be installed in a horizontal direction. This pump is directly driven by an elastic coupling (belt drive can also be used as needed).

There are only two curved blades inside the impeller, so the flow channel is wide and can accommodate general suspended particles.

There are 4 auxiliary blades on the back of the impeller to balance the axial thrust, and the impeller undergoes static balance testing during manufacturing.

The rotation direction of the pump is clockwise when viewed from the drive end.

The bearings in the bearing box are lubricated with thin oil, and the oil level height is indicated by the oil gauge. The oil level should be at the normal oil level line.

This pump shaft seal adopts oil seal group sealing, with good sealing performance and easy replacement.

The sealing ring is made of cast iron and fixed on the pump cover. It can be replaced with spare parts after wear.

The clearance f between the pump cover and the inlet end of the impeller, the clearance T between the sealing ring and the impeller assembly (see structural diagram), and the inner diameter of the matched bottom valve are listed in Table 1.

PW type horizontal sewage pump can transport acidic, alkaline or other corrosive sewage with a temperature below 80 ℃. PW type horizontal sewage pump is widely used in industries such as chemical, petroleum, light industry, food, pharmaceutical and environmental protection. The performance range of PW type horizontal sewage pump is: flow rate Q is 10-125m3/h; The head H is 10-18m, and the overcurrent components are made of ZG1Cr18Ni9 and HT200 materials. PW type horizontal sewage pump is a single-stage, single suction, cantilever corrosion-resistant centrifugal sewage pump. The pump suction port is in the axial horizontal direction, and the pump suction port can be installed in the horizontal vertical direction as needed.

Product parameters of stainless steel sewage pump

Faults and solutions

Assembly and disassembly

First check for any defects that may affect the assembly of each component, then clean them thoroughly before proceeding with the assembly.

1. Prepare paper pads, plugs, and pipe plugs and install them onto the corresponding components.

2. Install the sealing ring, shaft seal box, oil gauge and oil hole cover, and felt stock into the pump cover, bearing body, bearing box, and bearing cover respectively.

3. First, install the bearings into both ends of the shaft, then install them together into the bearing box, and finally install the bearing cover.

4. Install the bearing body, bearing (4PW without) oil seal ring and washer, impeller, washer and impeller nut in sequence and tighten them, then install the pump body and pump cover.

Disassembly and assembly must be done in reverse order.

install

1) Remove the grease and dirt from the base, and place the base on the foundation.

2) Use a spirit level to check the levelness of the base, and allow for leveling with a wedge iron.

3) Pour cement into the base and anchor bolt holes.

4) After the cement dries up, check whether the base and anchor bolts are loose, tighten the nuts if they are suitable, and recheck the level.

5) Clean the support plane of the base and the foot plane of the water pump and motor, and then install the pump and motor onto the base.

6) Check if the level is consistent with the center of the motor. If not, adjust it with thin iron plates to make it concentric (no more than 3 thin iron plates), and leave a 2-3mm gap between the couplings.

The difference between the upper, lower, left, and right outer circles of the coupling shall not exceed 0.1mm, and the difference between the large and small clearances between the end faces of the two couplings on the circumference shall not exceed 0.3mm. The appearance and installation dimensions of the pump are shown in Table 5 of Figure 4

precautions

1) The inlet and outlet water pipes of the pump should be supported, and the pump body should not be used as a support:

2) The outlet water pipeline should be equipped with gate valves; A general trash rack should be installed at the inlet of the pump suction pipeline to prevent larger stones and other objects from being sucked into the pump and damaging the blades.

PW and PWF cantilever centrifugal sewage pumps (installation dimensions)

Appearance and installation dimensions

1. Start up

1) Check if the bearing box has been filled with oil and if the oil level is within the normal range.

2) Check if the rotation direction of the motor is consistent with the rotation direction of the pump.

3) Close the discharge gate valve and pressure gauge plug, and at the same time, pour water into the suction pipe of the pump through the screw hole on the upper part of the pump body.

4) Start the motor and open the pressure gauge plug.

5) When the water pump reaches normal speed and the pressure gauge displays the corresponding pressure, open the vacuum gauge plug and gradually open the gate valve on the drainage pipeline until needed.

2. Stop it

1) First, slowly close the gate valve of the water outlet pipeline, and then cut off the power supply.

2) In case of freezing season, after stopping the machine, open the square screw plug at the bottom of the pump body and drain the stored water to prevent freezing and cracking.

3) If not used for a long time, each component should be disassembled and cleaned, and rust proof oil should be applied to the sliding surface for proper storage.

3. Operation

1) During the operation of the pump, it is necessary to pay attention to the heating condition of the instruments and bearings, the leakage of the packing, and whether the vibration and noise of the pump are normal. If any abnormalities are found, they should be dealt with in a timely manner.

2) The high temperature of the bearing shall not exceed 75 ℃.

3) The bearing oil should be maintained at the normal oil level line, and should not be too high or too low. If it is too low, it should be refilled in a timely manner.

4) When the clearance between the sealing ring and the impeller exceeds the following specified value, a new sealing ring should be replaced.

When the diameter of the suction port is ≤ 100mm and the total clearance in the diameter direction is ≥ 1.5mm

When the diameter of the suction port is greater than 100mm and the total distance in the diameter direction is ≥ 2mm

Ordering Instructions

1、 ① Product name and model of horizontal sewage pump ② Diameter of horizontal stainless steel sewage pump ③ Head (m) of horizontal sewage pump ④ Flow rate of horizontal sewage pump ⑤ Motor power (KW) of horizontal sewage pump ⑥ Speed (r/min) of horizontal sewage pump ⑦ Voltage [V] of horizontal sewage pump ⑧ Suction (m) of horizontal sewage pump ⑨ Whether the horizontal sewage pump comes with accessories for us to correctly select for you.

2、 If the horizontal sewage pump product model of Yangtze River Company has been selected by the design unit, please order directly from Yangtze River Sales Department according to the horizontal sewage pump model.

3、 When the usage situation is very important or the environment is complex, please provide design drawings and detailed parameters as much as possible, and our experts will review and control them for you.