Screw Pump

Your Professional Screw Pump Supplier

Shandong Dayang Mining Equipment Co., LTD.Is specialized in the production of mine explosion-proof submersible sand discharge pump, submersible sewage pump and mine pneumatic submersible pump, mine pneumatic diaphragm pump enterprises.The products cover 5 series and more than 400 varieties, such as mine flameproof submersible pump, high pressure and high power mine flameproof submersible pump, mine pneumatic desilting pump, mine pneumatic diaphragm pump, and pneumatic submersible pump, which are widely used in mining, building materials, metallurgy, municipal engineering and other fields, and the technical level has reached the advanced level of domestic and international similar products.

Corrosion Resistant Screw Pump
Corrosion resistant screw pump belongs to the rotor type positive displacement pump, its advantages are smooth flow, small pressure pulsation, strong adaptability to the medium, and good...
read more
Screw Slurry Pump
Screw slurry pump is a single screw pump type positive displacement rotary pump, the pump uses the eccentric single screw screw in the double helix bushing rotation, so that the thick slurry along...
read more
Sludge Screw Pump
Sludge screw pump is a single screw pump type positive displacement rotary pump, the pump uses the eccentric single screw screw in the double helix bushing rotation, so that the thick slurry along...
read more
Dosing Screw Pump
Dosing screw pump is also called "Monopump", which is a rotor positive displacement pump. The main working part is composed of a bushing (stator) with a double-headed spiral cavity and a...
read more
Stainless Steel Corrosion Resistant Screw Pump
Stainless steel corrosion resistant screw pump belongs to the rotor type positive displacement pump, its advantages are smooth flow, small pressure pulsation, strong adaptability to the medium,...
read more
Chemical Screw Pump
The chemical screw pump belongs to the rotor type positive displacement pump, which has the advantages of smooth flow, small pressure fluctuation, strong adaptability to the medium, and good...
read more
Acid and Alkali Resistant Screw Pump
Acid and alkali resistant screw pump is a new type of pump that operates according to the principle of rotary meshing and volumetric design. The main working components are eccentric screw (rotor)...
read more

Why Choose Us

Our Services
Pump machine warranty for one year, pre-sales and after-sales have professional technical personnel to guide the use of problems. Product after-sales use problem 24 hours to reply.

Foreign trade market
Products are exported to Russia, Australia, India and Southeast Asian countries and regions.

Our certifications
With a perfect quality assurance system, Obtained "ISO9001 Quality Management system certification", "ISO45001 Occupational Health and Safety Management System certification", "ISO9001 Environmental Management System certification", "Intellectual property management system certification", "adoption of international standards certification", "energy-saving product certification".

Fast Shipping
We understand that time is critical for your projects. That’s why we ensure that orders are processed and shipped within 1 hour after receiving your order during business days, from our centrally located warehouse in Miami.

Screw Pump Specifications

Working Principle	Screw Pump
Driver	Electric Motor or Diesel Engine
Flow rate range	0.8-150m3/h (3.5-660US. GPM)
Maximum head	120m (393 feet)
Casing parts material	Cast Iron / Stainless Steel
Screw material	SS201 / SS304 / SS316
Stator material	NBR / Silicon Gel.
Seal	Packing seal
Motor type	YX3 Series motor / Gear box and YX3 series motor / Explosion proof motor
Max.permissible fluid temperature	150°C(302°F)
Type of connection	Flange

Key Features

A simple design makes it heavy duty with minimal wear.

Twin screw pumps can run in either direction allowing them to deliver a bi-directional flow.

Smooth handling, operating a range of flows and pressures.

Versatility with ability to pump at a range of flow rates, pressures, liquid types and viscosities.

Self-priming characteristics

High tolerance for entrained gases or air.

Eliminate slip pulsations in low viscous, high pressure applications.

Low NPSH requirement when emptying tanksWide range of flow capabilities (run speeds up to 3500 RPM).

Types of Screw Pumps Available

Single Screw Pump
Single Screw Pumps consist of a single screw (rotor) and stator. The screw has spiral grooves on it to suck up the liquid, and the rotation of the screw pumps the liquid. Single Screw Pumps are mainly used to pump low-pressure fluids.

Twin-Screw Pump
Twin Screw Pumps have two screws facing each other. Each screw rotates and moves in opposite directions, pumping liquid toward the discharge port of the pump. They are used to pump high-viscosity liquids.

Triaxial Screw Pump
The Triaxial Screw Pump consists of three screws arranged in a concentric circle. Rotation of each screw pumps the fluid toward the center of the pump. Triaxial Screw Pumps are used to handle high viscosity liquids and are commonly used in the petrochemical industry.

Vacuum Screw Pump
Vacuum screw pumps use multiple screws to generate vacuum pressure to suck up liquids. They are used for self-priming and vacuuming of liquids.

Applications

Food Industry
Screw pumps are used to pump a variety of liquids used in the food industry, including pasty liquids, jams, sauces, and syrups. Screw Pumps can pump liquids without damaging them, thus preserving product quality.

Chemical Industry
Screw pumps are used to handle a wide variety of chemicals, such as acids, alkali solutions, and petroleum products. Since they can transfer liquids with high viscosity, they can handle high-viscosity chemicals.

Petrochemical Industry
Screw Pumps are used in the petrochemical industry to transfer highly viscous heavy oil. They are also useful for handling high-temperature liquids.

Agriculture
In the agricultural field, Screw Pumps are used in the livestock and dairy industries. They are used to transfer highly viscous liquids such as milk and liquid fertilizers.

Stainless Steel Corrosion Resistant Screw Pump

Shipping Instructions for Screw Pump

Order and shipment confirmation
When your order has been received by our system you will receive an automatic email from our system confirming that your order has been received.

When you order has shipped you will receive an email from our shipping department confirming your order has been shipped with a link to our system for tracking your shipment. This link will include your tracking numbers for future reference.

Shipping schedule
Whether your order is shipped via Small Package or Truck, any reference to number of days for transit time does not include the day of pick up and does not include weekends or Holidays. For example, 3-day transit for a shipment picked up on a Tuesday would have an expected delivery day of Friday.

Our Certificates

FAQ

Q: Can a screw pump run dry?

A: Providing screws are lubricated, units are capable of dry running making them suitable for tank stripping as they can also handle small amounts of entrained gas and air.

Q: Can a screw pump cavitate?

A: With the trend of increasing rotational speed, delivery pressure and power in screw pumps, the cavitation becomes a phenomenon unavoidable in such kinds of machines.

Q: Does a screw pump need priming?

A: A screw pump is self-priming, meaning this process doesn't need to take place. This is because of the vacuum that is created within the pump. If a screw pump does become dry and continues to be used, it will cause damage. Eventually, dry running a screw pump will leave it irreparable.

Q: Are screw pumps efficient?

A: They are capable of constant flow rates, have a controllable output and operate quietly and smoothly with low pulsation. They also have high volumetric efficiency and are capable of self-priming. One of the main disadvantages of screw pumps is that they can be expensive.

Q: What are the failure modes of screw pumps?

A: Failures during operation.Common failures during operation are caused by too high suction head, too long suction pipes, wrong (too close-meshed) filters or too small pipe diameters. As a result, noise, vibration or dry running can occur.

Q: How often should pumps be serviced?

A: Every 1 years
Residential Pumping Stations: Typically serviced every 1 years. Commercial Pumping Stations: Serviced every 6 months depending on usage and wastewater content.

Q: What is the main cause of a noisy screw pump operation?

A: Loud or excessive screw pump noise is a sign of a clog, cavitation, blocked suction or discharge, misalignment, or worn or damaged bearings.

Q: What direction do screw pumps rotate?

A: Screw pumps operate using two counter-rotating screw rotors which are engineered so that they rotate “towards each other”. This traps the gas in the space between the “screws” of their rotors. As the screws rotate, this trapped volume decreases which not only compresses the gas but moves it towards the exhaust.

Q: Can a screw pump pump water?

A: A screw pump is a type of submersible pump that is suitable for pumping clean and slightly polluted water from boreholes and dug wells, or as a pump for a pressure sewerage.

Q: What happens if you run a pump dry?

A: Dry running occurs when a pump runs without sufficient liquid flowing through it. When this happens, a surge in pressure, flow or overheating occurs. Elements within the pump casing seize together. This triggers shock waves inside the pump which cause significant damage to the pump, resulting in total failure.

As one of the leading screw pump manufacturers and suppliers in China, we warmly welcome you to buy durable screw pump made in China here from our factory. All our products are with high quality and competitive price.

Pneumatic Two seat Regulating Valve, Self priming Pump, Horizontal Multistage Centrifugal Pump