G85-1 & G85-2 Screw Pump Pricing

Duwan Environmental ProtectionType GScrew Pump Introduction：

A screw pump is a positive displacement pump consisting of a rotating screw and a rotor fixed inside a stator. They have a certain gap between them. As the motor's rotating motion passes through the rotor, it drives the screw to rotate as well. The interlocking teeth on the screw and the rotor form a sealed cavity, creating a pressure difference within the stator. This allows the liquid to enter the screw cavity from the stator's inner hole, and the screw then pushes the liquid out of the screw cavity. Also known as a volumetric pump or screw discharge pump.

Advantages of Screw PumpsUsage:

Bolt pumps offer the advantages of low flow rate, low noise, minimal vibration, long lifespan, and high mechanical efficiency, and are widely used in systems such as ships, passenger elevators, precision machine tools, and turbine speed regulation.

Screw Pump Categories：

Single screw, twin screw, and triple screw pumps, categorized by the number of screws.Hydraulic pumps and conveyance pumps are categorized by their applications.

Reasons for insufficient screw pump flow

1. The inlet flow of the screw pump is already relatively small.

Due to the small inlet flow into the pump, it cannot keep up with the discharge volume at the pump outlet.So, the phenomenon of insufficient screw pump flow occurs, and the solution is to increase the flow at the screw pump's inlet.

2. The inlet pipeline sealing of the screw pump was not handled properly.

Pipe joints or the pipes themselves are not adequately sealed.If the sealing is not up to par, it can lead to insufficient pressure and insufficient flow. At this point, you should replace the pipeline with a new one or repair the leaky areas.

3. Screw pump inlet and outlet filter clogging

A clogged inlet pipe or filter in the screw pump is a major reason for insufficient flow. Therefore, clearing the clog is necessary to resolve the issue of insufficient flow in the screw pump.

4. The rubber sleeve of the screw pump is worn due to idling or incompatibility with the liquid medium being transported.

This situation often arises due to a chemical reaction between the liquid medium being conveyed and the rubber sleeve of the screw pump., Once the rubber sleeve is damaged, the gap between the rubber sleeve and the screw pump shaft increases, causing insufficient flow in the screw pump. If faced with this situation, it is advisable to replace it with a more suitable rubber sleeve as soon as possible.

5. The rotational speed of the screw pump motor is reduced.

The reduction in the motor speed of screw pump products often also leads to insufficient flow in the screw pump.For low rotational speeds, increasing the speed generally leads to a higher flow rate. However, when transporting liquids with high viscosity, even increasing the speed may not be sufficient to maintain the flow rate in screw pumps. In such cases, it is recommended to consult the manufacturer of the pump for a solution.

6. Incorrect screw pump selection

Selection is quite important.Because the flow of commonly used screw pump products is calculated and tested based on the water level standard.If the specific gravity or viscosity of the fluid being conveyed is greater than water, it is also necessary to consider this when selecting the screw pump type; otherwise, it may lead to insufficient flow of the screw pump.Due to reasons such as excessive or insufficient head height.

Duwan Environmental ProtectionG TypeScrew pumps, as a commonly used industrial pump, are widely applied due to their stable operation, reliable performance, and low energy consumption.

During the operation of screw pumps, it is common to require replacement parts due to wear or damage of components.

Important Points to Consider When Replacing Screw Pump PartsDescription:

Screw pumpBefore replacing parts, the machine must be cleaned.Screw threadPump interior. Due toScrew ThreadPumps often contain various dirt and debris internally. Failure to clean them beforehand can lead to various issues during component replacement and may also degrade the machine's performance.Screw threadPump lifespan.

Next, it's essential to select the appropriate accessories for replacement. Different types and models of screw pumps have varying accessories, so when replacing parts, it's crucial to choose the correct ones and follow the manufacturer's instructions meticulously to avoid unnecessary losses.

Additionally, safety should be a priority when replacing parts. Be cautious during disassembly to prevent injury to personnel or equipment. Prior to removing parts, always disconnect the power source and apply necessary coatings or treatments to avoid electrical hazards that could cause personal injury.

After replacement, a check is required. After replacing parts, the pump unit must be reassembled and tested. If any abnormalities are found, the pump should be stopped immediately and the cause checked to avoid potential safety hazards.

In summary, the replacement process for screw pump accessories requires careful consideration of various factors and systematic operation.Thorough pre-replacement component workIn order to better maintainScrew threadPumps, ensuring their stable operationExtend its service lifeAdditionally, by strictly controlling the process of component replacement, the equipment failure rate can be reduced, work efficiency can be improved, and production benefits can be enhanced.

Screw pumpMotor overheatingThe reason(s):

Operating range (flow, head) exceeds screw pump design requirements; select an appropriate motor according to the series type spectrum.

The medium's specific gravity exceeds the motor rating for the screw pump configuration, so a suitable motor for the screw pump must be specified.

The filling cap is too tight or the mechanical seal spring is too tight; please readjust the compression amount of the filling cap or the mechanical seal spring.

Poor pump assembly quality; there may be friction at contact points or misalignment between the motor and pump shaft. At this time, check the assembly quality and eliminate assembly defects.