Horizontal Centrifugal Pump ZG Series

• Diameter range: DN100-DN400mm
• Flow range: 70-3600m³/h
• Head range: 3-75m
• Speed: 1450-2900r/min
• Motor power: 2.2-55 KW
• Working temperature: ≤200°C
• Structure: horizontal, centrifugal, cantilevered, single stage, single suction

ZG series pumps are designed with a closed impeller with 3 vanes which broadens the flowing passage of the pump. Thus this pump features high efficiency and non-blocking performance. Meanwhile, the wet end of the ZG series pump is made from high chromium wear-resistant alloy. This makes it especially suitable for transporting gravel, mud and slurry with larger solid particles. And the maximum concentration of the slurry can safely reach 50% without damaging the pump.

The ZG series horizontal slurry pump is mainly used in sand dredging, sand mining, mining, coal dressing, metal smelting, river dredging and other fields. It can also transport high temperature and easily crystallizing materials in aluminum factories or cement slurry in cement factories, etc.

• Single stage and single pump casing structure: the discharge direction of the pump can be adjusted 360 degrees, providing convenient installation and disassembly.
• The wet ends (pump casing, front liner insert, back liner insert and impeller) are manufactured with high chromium A05 to ensure wear-resistant performance even under severe working conditions.
• The shaft seal of the pump adopts a packing seal. The high pressure clean flushing water is added in the stuffing box to guarantee the normal running of the pump.
• Bearing assembly adopts cartridge type structure to facilitate the adjustment of the clearance between the impeller and front liner insert. Thus the transport efficiency is ensured.
  As for maintenance, the bearing assembly can be removed as a whole. Grease lubrication is used.
• Pump body and pump cover are connected by a clamp for easy installation and disassembly. And the discharge ports can be adjusted 360 degrees based on site requirements.

Considering that ZG series pumps are usually used on ships or underwater, customers hope that we can provide complete and well-designed pump systems when contacting us so they can be directly installed inside the cabin to save installation time and cost.

After years of development, we now have three kinds of mature centrifugal pump systems, including a pump head, reduction gear box, high-elastic coupling, diesel engine and other parts. The pumps with different design structures can be applied in different occasions based on customer demands.

1. Pump with self-bracket
This is the most common type. The pump casing, gear box and driver are fixed through the bracket to create a more stable structure. It is best suited for small dredging vessels.

2. Integral pump and gear box type
This kind of centrifugal pump is specially designed for use as an inboard pump for large dredging boats. To make the whole pump system more portable, we abandoned the bracket structure and specially customized a gear box and diesel engine which can share one bearing with the pump. This makes the pump casing, gear box and diesel engine connected as a whole.

For the limited loading capacity of the dredging boat, the actual utilization efficiency of the boat is increased naturally with this pump which is lighter than other pumps of equivalent transporting capacity.

3. Submersible pump with 30m suction depth
A common problem occurring in dredging is that the height of the sand bed to the water surface may exceed the suction depth (15m-20m) that can be obtained by a normal horizontal sand gravel pump. If adopting the general submersible pumps, it is easy to overload and over-current the motor, or you may even flood the motor and other safety risks.

The submersible pump is a new type of pump developed and produced for solving these two problems. Its maximum suction depth exceeds 30m, providing safety, stability and durability.

To make the pump casing more suitable for underwater operation, we exchanged the pump's frame part and adopted a special bearing and 3-layer sealing structure to protect the bearing assembly from the influence of water.

Tips: if the pump's working depth is 20m, then a suction pipe of at least 30m is required. This will reduce the suction pressure, thus leading to low suction efficiency. Aiming to solve this problem, we recommend that you install the submersible pump near land to improve suction pressure.