Definition

High viscosity Rotary Lobe Pump, i.e., cam Rotary Lobe Pump, is a cam-type volumetric pump that is mainly used to transport fluids with the help of periodic conversion of multiple fixed volume delivery units in the working chamber. High viscosity Rotary Lobe Pump can be used in various industries, such as food industry, daily chemical industry, pharmaceutical industry, construction industry and so on.

Working principle

High viscosity Rotary Lobe Pump with internal teeth of the driving gear (external rotor) driven by the internal rotor in the fully enclosed pump body for the same direction of rotation, the pump body and the front cover of the crescent plate so that the suction port and the discharge port separated. When rotating, negative pressure is formed in the suction port, the liquid is sucked in, and the rotor brings the liquid to the discharge port, and is pressurized and discharged from the pump body, which completes the transportation of the liquid.

Characteristics

High-viscosity Rotary Lobe Pump has a wide range of viscosity adaptation and is characterized by low rotational speed, high efficiency, smooth operation, strong self-absorption, easy operation, and the pump can be preheated. The pump adopts advanced sealing, reliable performance, long life, is the petrochemical, grease, asphalt, food, light industry transportation of high temperature, high viscosity or high hygiene requirements of the equipment. High viscosity Rotary Lobe Pump conveying material viscosity range is relatively wide, viscosity range of tens of Reese to hundreds of thousands of Reese can be. High viscosity pumps in different viscosity under different working conditions, the material configuration is different.

Features of different types of high viscosity Rotary Lobe Pump

High viscosity Rotary Lobe Pump according to the working conditions of different materials can be divided into stainless steel, ordinary cast iron, ductile cast iron, copper and cast steel.

1, cast iron material of high viscosity Rotary Lobe Pump, rotor and shaft after heat treatment has a good cost performance, can be used for a variety of no special requirements of transportation and pressurization.

2, ductile iron material of high viscosity Rotary Lobe Pump has good wear resistance and temperature characteristics, mainly used for conveying wear and tear of the medium is quite serious, its rotor to do carburizing treatment, has good wear resistance and temperature resistance, and the cost is not high.

3, cast steel material of high viscosity Rotary Lobe Pump application is also quite ****, according to the material characteristics, mostly used in the need for heat preservation occasions, such as conveying asphalt, resin and other room temperature solidification and crystallization of the media.

4, copper material of high viscosity Rotary Lobe Pump is used for explosion-proof requirements of the working conditions.

5, stainless steel material of high viscosity Rotary Lobe Pump, used in corrosive and sanitary requirements of high occasions, the material can be divided into 304 material and 316 material, 316 material price is slightly higher, corrosion resistance is stronger, if corrosive is not very strong, it is recommended that you choose 304 material.

Advantages and Disadvantages

Advantages of high viscosity Rotary Lobe Pump

1、Conveying liquid smoothly, no pulsation, small vibration, low noise.

2、It has strong self-absorption performance.

3, the correct choice of parts materials, can transport a variety of corrosive media, the use of temperature can be 200 ℃.

4、The internal and external rotor turn the same, wear and tear is small, long service life.

5, the pump speed and flow rate is a linear function of the relationship, can be appropriate to change the speed to change the flow rate of the pump.

6、Specially suitable for the transportation of high viscosity medium.

Disadvantages of high viscosity Rotary Lobe Pump

1、It is not suitable for the workstation with pressure more than 2.5Mpa, and it is not suitable for conveying sludge with solid rate ≥20%.

2, the price compared to other types of pumps (centrifugal pumps, screw pumps, diaphragm pumps) high.

Usage

First, the use of high viscosity Rotary Lobe Pump

1、High viscosity Rotary Lobe Pump is equipped with cooling water mechanical sealing equipment, before starting, the cooling water should be opened, and then ignite the oil pump to open the pump, and often investigate whether the cooling water is normal or not, and prohibit running without cooling water.

2、High viscosity Rotary Lobe Pump in principle can only be operated under the conditions of pressure, flow, viscosity, temperature, PH value, solid content, etc.. And as far as possible to prevent the operation of the working conditions in excess of the constraints.

3、High viscosity Rotary Lobe Pump should dilute the medium in the pump before transporting solidified high viscosity medium to prevent the high viscosity medium from remaining solidified in the pump. If necessary, use a cleaning solution and circulate through the pump for 5-10 minutes.

4、High viscosity Rotary Lobe Pump operation of material viscosity, flow, pressure increase, etc. lead to motor overload, should always check the pressure gauge, safety valve, overcurrent protection equipment is normal.

5、High viscosity Rotary Lobe Pump should be installed within a year after the monthly cleaning of filters and filters to prevent clogging, resulting in the pump can not operate normally. Try to prevent the use of Y-type pipeline filter (Y-type pipeline filter useful area is too small, affecting the flow rate of feed media, resulting in pump oscillation).

6、High viscosity Rotary Lobe Pump is equipped with heat preservation equipment, before starting, it should be preheated by hot water (steam), and be started after the pump temperature rises to the technical requirements for transportation. Turn off the hot water (steam) before shutting down.

Product characteristics

1、Wherever in contact with the medium (material), the parts are made of stainless steel (SUS304, AISI316, 316L) in full compliance with health standards.

2、It is suitable for conveying high viscosity, concentration and any medium (material) containing particles.

3, suitable for temperature -30 to +200 degrees Celsius.

4、High pressure, suitable for long distance and high resistance quantitative transportation.

5、Low rotating speed, generally between 200 rpm and 600 rpm, the materials conveyed by it keep the original quality unchanged and do not have any physical and chemical reaction.

6, no contact between rotor and rotor, no wear and tear in long term use, smooth running, low noise, high efficiency.

7, novel design, simple installation and maintenance, easy to clean, to ensure that the machine internal and production hygiene and cleanliness.