Pump Model: SHR/150E 

Driven by Electric Motor 75kW.

Material of Wetted Parts: Natural Rubber R55 with Shore A 50　

Heavy Duty Slurry Pumps SH/250ST (12/10ST-AH) ready to be shipped to our customer from outside China. 

Light Duty Slurry Pumps SL/400S (400S-L) ready to be shipped to our customer inside China. 　　

If the Slurry Pump is found to be blocked during use, how to solve it is that many customers think that this is a relatively complicated problem. Once this blockage problem is not handled properly, it will easily cause damage to the equipment, thereby affecting the efficiency of use. Therefore, everyone should pay special attention to the clogging problem of the slurry pump. In fact, if you grasp the following points, you can easily solve the problem.

(1) The solid and hard deposits in the volute of the horizontal slurry pump make it silted up, and measures to remove the silt can be taken.

(2) If the axis of the shaft and the feeding box are different, the main reason is that the machining error is large and the installation is incorrect. Care should be taken to check that the installation is correct after installation. If the sealing water ring is seriously worn, it needs to be replaced with a new water ring. If the sealing water pipe is blocked, the sealing water cannot enter the middle of the packing, which will cause the packing to wear quickly and lead to leakage. The blocked water pipe should be dredged to keep the sealing water clean.

(3) If the impeller or the water inlet and outlet pipelines are blocked, the impeller or pipeline can be cleaned. If the impeller is seriously worn, it should be replaced. If the packing port leaks, the packing should be pressed tightly. If the conveying height is too high, the loss resistance in the pipe is too large, so reduce the conveying height or reduce the resistance.

The horizontal slurry pump should be regularly maintained during its use, including dredging. This can effectively avoid the problem of slurry pump blockage. If you encounter these problems in the later use of the slurry pump, you can follow the steps above. resolve.

Slurry pumps belong to the category of centrifugal pumps. Slurry pump refers to a kind of machine that increases the energy of solid and liquid mixed medium by means of centrifugal force.

Centrifugal pumps work by rotating the impeller to cause centrifugal motion of water. Before the pump is started, the pump casing and the suction pipe must be filled with water, and then the motor is started, so that the pump shaft drives the impeller and the water to rotate at a high speed. into the pressurized water line of the pump.

The basic structure of a centrifugal pump is composed of eight parts, namely: impeller, pump body, pump cover, water retaining ring, pump shaft, bearing, sealing ring, stuffing box, and axial force balance device.

1. The impeller is the core part of the centrifugal pump. It has a high speed and a large output force.

2. The pump body is also called the pump casing, which is the main body of the pump. It plays the role of supporting and fixing, and is connected with the bracket on which the bearing is installed.

3. The function of the pump shaft is to connect the motor with the coupling and transmit the torque of the motor to the impeller, so it is the main component for transmitting mechanical energy.

4. The sealing ring is also called the leakage reducing ring.

5. The stuffing box is mainly made of stuffing, so that the water flow in the pump does not flow to the outside and the outside air does not enter the pump. Always maintain a vacuum inside the pump! When the friction between the pump shaft and the packing generates heat, the water seal pipe is used to inject water into the water seal ring to cool the packing!

6. Axial force balance device. During the operation of the centrifugal pump, since the liquid enters the impeller under low pressure and flows out under high pressure, the pressure on both sides of the impeller is unequal, resulting in an axial thrust directed towards the inlet. It will cause axial movement of the rotor, resulting in wear and vibration, so an axial thrust bearing should be installed to balance the axial force.

Ⅰ. Development History of Marine Dredging Pump

1. The PN series dredging pumps were produced before 1980s, with sizes ranging from 1PN to 10PN,

2. After the 1980s, slurry pumps from abroad were introduced: we improved the G (GH) series, which are used on a cutter suction dredger for pumping large particles of gravel; AH series pumps were improved for sludge discharge relay pump; Submersible slurry pumps are used for desilting in ports and submarine trenching and cable laying.

3. After 2000, four products, 250WN, 300WN, 450WN and 500WN, have been well tested in the “Hundred Ships Plan” of China.

4. After 2005, the successful application of large models of dredge pumps and high-pressure flushing pumps with a diameter of more than 600 has raised the design and manufacture of dredge pumps to a new level.

II . Four Structures of Dredging Pumps 

Structure 1

Structure 2

Structure 3

Structure 4