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| Email: | info@sanchangpump.net |
| Hotline： | +86 181 4266 2779 |
| +86 193 1300 1794 | |
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Wechat： |
+86 181 4266 2779 |
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+86 181 4266 2779 |
| Address： | No.517,Xiangfu Road |
| Yuhua District, | |
| Changsha City | |
| Hunan Province, P.R.C |
CZ Type Standard Chemical Process Pump
Classification:
End Suction Centrifugal Pump
Power Plant
Metallurgical
Key words:
Chemical Process Pump
Centrifugal Pump
OH2 Pump
Hotline:
- Product Description
- Performance Parameters
- Installation Drawings
- Installation and Operation
- Faults and Solutions
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- Commodity name: CZ Type Standard Chemical Process Pump
Flow Range: 10~2000 m3/h</br> Head Range: 12~160 m</br> Fluid Temperature: -80 ℃ ~ +300 ℃</br> Inlet Pressure: 2.5 MPa</br> Shaft Seal: packing seal, mechanical seal</br> Available Materials: HT200, HT250, QT600, ZG, 304, 316, 316L, 317L, 904L, CD4-MCu, etc</br></br></br></br>
The CZ type standard chemical process pump is a horizontal, single-stage and single-suction centrifugal pump. Its dimensions and performance comply with DIN24256 and ISO2858 standards. The performance range of CZ series covers all parameters of IH series standard chemical pumps, with higher efficiency and better cavitation resistance. It is fully interchangeable with IH pumps on a single-unit basis.
Main Applications
It is used for conveying low-temperature or high-temperature liquids, neutral or corrosive liquids, as well as clean liquids or liquids containing solid particles. It is particularly applicable to chemical and petrochemical industries, oil refineries, pulp and paper mills, and sugar industry.
Conveying Medium
1. Inorganic and organic acids such as sulfuric acid, nitric acid, hydrochloric acid and phosphoric acid at various temperatures and concentrations; alkaline solutions including sodium hydroxide and sodium carbonate, as well as various salt solutions.
2. Various liquid petrochemical products, organic compounds and other corrosive raw materials and finished products.
Model Description
Example: CZ32-160
CZ -- Standard chemical process pump
32 -- Inlet and outlet diameter (mm)
160 -- Nominal impeller diameter (mm)
Product Advantages
1. The pump shaft and motor shaft are integrated with excellent concentricity, featuring low vibration, low noise and stable operation.
2. Equipped with castings and seals of different materials, it can deliver clean water, warm water, hot water and various liquid media.
3. Fitted with Y2 and YX3 high-efficiency energy-saving motors and high-quality domestic bearings, the pump boasts large starting torque, high efficiency, low vibration and noise, reliable operation and long service life.
4. Properly selected materials for mechanical seals ensure leak-free long-term operation, cutting operation and management costs by over 50%.
5. The adoption of imported mechanical seals and bearings further enhances product reliability.
Structural Features
Standard chemical process pump body: Adopting horizontal back pull-out design, the pump head is connected to the motor via a coupling and mounted on a base plate. The impeller is rear-split type, and the pump is equipped with three bearings. The externally mounted mechanical seal is fitted with a cooling device, and the oil level of the bearing housing can be observed through an oil sight glass. The overall structure is compact and reasonable.
Support feet are cast on the pump casing. The base support structure bears pipeline loads and transfers them directly to the foundation. This prevents bending of the pump rotor, so as to maximize the service life of bearings and mechanical seals. During maintenance, there is no need to disconnect connecting pipelines. Simply loosen the bolts between the bracket and pump casing to separate them for maintenance of the impeller and mechanical seal, which is simple and convenient.
Impeller: Closed, semi-open and fully open impellers are available. The axial force of CZ chemical centrifugal pumps is mainly balanced by back blades or balance holes, and the residual axial force is borne by bearings.
Pump Cover: It forms a seal chamber together with the seal gland. The standard chamber size is compatible with various types of seals.
Shaft Seal: Options include packing seal, single mechanical seal, double mechanical seal and tandem mechanical seal according to different working conditions.
Bearing: Lubricated with thin oil, the oil level is controlled by a constant-level oil cup to keep the bearings well lubricated.
Shaft: Protected by a shaft sleeve to avoid direct contact with corrosive media, effectively extending the service life of the shaft.
Back Pull-out Design: Maintenance can be carried out without dismantling the inlet and outlet pipelines, bringing great convenience for use.
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Flow Range: 10~2000 m3/h
Head Range: 12~160 m
Fluid Temperature: -80 ℃ ~ +300 ℃
Inlet Pressure: 2.5 MPa
Shaft Seal: packing seal, mechanical seal
Available Materials: HT200, HT250, QT600, ZG, 304, 316, 316L, 317L, 904L, CD4-MCu, etc
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Disassembly and Assembly
1. To inspect or replace the impeller, close the outlet valve, remove flange bolts and base plate bolts, then lift the pump out of the container with lifting equipment.
2. Place the base plate on the support bracket. Remove all bolts of the pump casing, take out the pump cover and impeller nut. Gently tap the pump casing with two hammers to remove the impeller.
3. When replacing rolling bearings or packing, keep the base plate in place. Remove the motor and its supporting brackets first, then detach the pump coupling, gland and round nut, and take out the bearing assembly. For packing replacement, remove the packing gland before taking out the old packing and installing new ones.
4. Perform assembly in the reverse order of disassembly. Strictly ensure the concentricity of all components mounted on the shaft.
Installation, Operation and Maintenance
1. After assembly, rotate the coupling manually to check for flexible rotation. Listen for metal friction noise and confirm all component nuts are fully tightened.
2. Check the concentricity between the pump shaft and motor shaft. The radial runout of the two couplings shall not exceed 0.1 mm, and the end face clearance between them shall be maintained at 1 ~ 2.5 mm.
3. The distance from the pump suction port to the container bottom shall be 2 to 3 times the suction port diameter. The clearance between the pump casing and container wall shall be more than 2.5 times the suction port diameter.
4. The discharge pipeline shall be supported by independent brackets. The pipeline weight shall not be borne by the pump.
5. Verify the motor rotation direction to ensure the pump rotates as marked.
6. Close the gate valve and pressure gauge on the discharge pipeline, and connect the cooling water pipe.
7. Start the motor, turn on the pressure gauge, then slowly open the discharge gate valve to the required position for normal operation.
8. Inspect the pump and motor regularly. The temperature rise of bearings shall not exceed 75℃, and sufficient grease shall be filled in the bearing housing.
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Pump Fails to Start
1. Power failure: Check the power switch and circuits.
2. Motor wiring fault: Inspect the motor connections.
3. Internal blockage: Check for foreign objects inside the pump.
4. Motor malfunction: Check if the motor is damaged.
Reduced Flow Rate
1. Air leakage inside the pump chamber: Inspect the shaft seal, sealing rings and valves for damage.
2. Air leakage of the inlet valve: Check the valve sealing ring for damage.
3. Foreign matter, friction or blockage inside the pump chamber: Remove foreign objects and clean deposits inside the pump.
Excessive Operating Noise
1. Loose contact between pump base and bracket: Reinstall or replace the bracket.
2. Poor fit between pump chamber and pump body: Adjust the axial clearance to ensure tight contact.
3. Damaged bearings or foreign matter ingress: Replace the bearings.
Excessive Pump Temperature
1. Pump burnout: Inspect the pump for damage and replace defective parts.
2. Damaged bearings or insufficient lubrication: Check the bearings and lubrication system, replace faulty bearings and improve lubrication.
The above are common faults and corresponding solutions for submerged pumps. Please perform regular maintenance during operation and troubleshoot faults in a timely manner. This can extend the service life of the pump and ensure production safety.
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Hunan Sanchang Pump Co., Ltd.
| Email: | info@sanchangpump.net |
| Hotline: | +86 181 4266 2779 |
| +86 193 1300 1794 | |
| Mobile/Wechat/WhatsApp: | +86 181 4266 2779 |
| Address: | No.517,Xiangfu Road, Yuhua |
| District, Changsha City | |
| Hunan Province, P.R.C |
