Order of 200ZJ slurry pump: ZJ slurry pumps were originated from China, and they are double casing slurry pumps, which are widely used in mining, power plants, and coal washing plants.

Feature of ZJ slurry pumps: High Pressure/High Head.

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.

Slurry pump in the process of conveying large concentration of mud for blocking solutions: 1 In the case of ensuring the main design parameters (flow, head) unchanged, the impeller can be changed from the original closed impeller to semi-open impeller. 2. Redesign the hydraulic model. 3. Redesign the front guard plate to match the newly designed impeller.

(1) Light slurry pump and heavy slurry pump according to the different abrasiveness of the conveying medium, the slurry can generally be divided into strong abrasive slurry and weak abrasive slurry. If the weight concentration of the slurry is C> 20%, solid relative density S> 20, solid particles d> 0.05n boron is a strong abrasive slurry, and other weak abrasive slurry is a weak abrasive slurry. Slurry pumps that transport the above two kinds of slurry are called heavy-duty slurry pumps and light-duty slurry pumps. The conveying medium of coal washing industry belongs to weak abrasive slurry, and the suitable equipment is light slurry pump.

(2) The structural characteristics of light slurry pump and heavy slurry pump The basic structure of heavy slurry pump is double shell, with volute and front and rear pump shell, which belongs to single-stage, single-suction cantilever, horizontal, axial suction radial discharge centrifugal slurry pump. This type of pump has high manufacturing cost and complex maintenance and disassembly.

The basic structure of the lightweight slurry pump is a single shell, only volute, no pump shell, belonging to a single stage, single suction cantilever, horizontal, axial suction radial discharge centrifugal slurry pump. This type of pump has the advantages of simple structure, convenient maintenance and low manufacturing cost.

At present, the heavy-duty slurry pumps developed by CNSME include zJ series slurry pumps, which have been designed and developed and put into production with nearly 100 product specifications, featuring high efficiency, energy saving, high abrasion, reliable operation and long life.

The sheath is also called the volute, because its shape is more like the shell of a snail. It's made of the same material as the impeller and there are many different materials. We determine the material to use according to the characteristics of the slurry.

Cast iron material: not wear-resistant, cheap.

High chromium alloy: wear resistance, corrosion resistance, in the slurry pump used more.

Natural rubber: wear-resistant, corrosion-resistant, generally conveying non-angular particles of the slurry used more, compared with high chromium alloy will be a little corrosion resistance.

A49 material: This material price is relatively high, generally used to transport more corrosive slurry. In the desulfurization pump used more.

The above are several materials commonly used in slurry pumps. In addition, 316 stainless steel, lined with ceramic material. These several are used less, generally for special grout will choose these two materials, and the price will be much higher than the other several.