Screw pump eccentric screw pump rubber stator

Screw pump stator introduction

1 The stator is a threaded sleeve with several rotor threaded heads.

2 The stator is one of the main wearing parts of the single screw pump. The stator is subject to wear due to the solids content, pressure and viscosity of the conveyed medium and the rotation of the rotor.

The surface wear of the stator will cause the rotor and the stator to no longer be sealed, and the stator must be replaced in time.

3 The fit and shape of the stator and rotor are the main performance parameters of the pump.

4 There are many choices of stator materials, there are many kinds of natural and synthetic elastic rubber materials, including natural rubber, nitrile rubber, EPDM rubber, fluorine rubber, etc., and special materials can also be provided for harsh working conditions

Stator main material brief introduction:

For different media, there are different rubber formulations for wear resistance, corrosion resistance, heat resistance, etc.

Rubber material details:

1) One of the most important components in the screw pump is the stator, and the quality of the stator depends on the vulcanization process of the rubber.

2) Strictly control the selection of raw materials, the mixing process and the final analysis in the laboratory to ensure the high quality and long service life of the product.

3) In close cooperation with the customer, we define the properties of the material to meet the customer's needs. Moreover, based on our long-term experience in the field of injection molding, focusing on safe production and cost reduction, and the results compared with ordinary products, our selected material solutions have better performance.

Tube:

1) The stator tube can be selected from low carbon steel and stainless steel,

2) Special materials: 316L, 904L, CD4MCu duplex stainless steel, can work at temperatures up to 150 degrees

Stator materials commonly used by our company:

Rubber: NBR; EPDM; FPM; SI

Stator housing: Q235; SUS304; SUS316L

Progressive cavity pumps with different rotor/stator geometries, methods of operation and delivery principles

/ Geometry belongs to the single-start screw / rotor. The cross-section is circular, the pitch is large, and the depth of the thread is large, and the depth is constantly changing as the rotor rotates in the stator. The section of the stator is the same as that of the rotor, but the stator is a double-start internal thread separated by 180°. When the stator meshes with the rotor, a 1/2 stator cavity is formed. As the rotor rotates, the continuous forward cavity between the rotor and the stator moves the media of the transfer pack smoothly and continuously from the suction end of the stator to the discharge end.

The flow rate is determined by the pitch, diameter and eccentricity of the rotor/stator and the speed of the pump.

Outlet pressure depends on series and maximum 6bar 85psi differential pressure per stage,

2-stage progressive cavity pump with S-shape geometry achieves 12bar 170psi differential pressure and 100% flow.

The shape of the single-stage screw pump with L-shaped geometry is the same as that of the S-type two-stage pump, and the diameter and eccentricity are the same. The rotor/stator pitch of the L-shaped geometry is twice that of the S-shaped geometry. Therefore, the pump has twice the flow compared to the S-shaped geometry with a maximum differential pressure of 6bar 85psi.

Double thread geometry stator

The double threaded rotor has an elliptical cross-section with a large pitch and a large thread depth. The rotor rotates eccentrically in a fixed stator. The stator also has the same geometric shape as the rotor, but the stator has a three-threaded thread separated by 120°.

When the stator and the rotor are engaged, a 2/3 geometric cavity is formed between them. When the rotor rotates, the continuous forward cavity between the rotor and the stator is smoothly and continuously transported from the suction end of the stator to the end of the exhaust port.

The flow rate is determined by the pitch, diameter and eccentricity of the rotor/stator and the speed of the pump. Outlet pressure depends on the series, the maximum pressure difference per stage is 6bar 85psi.

The cavity size of the double-start thread geometry is about 75% of that of the S/L type, but the cavity is opened twice every turn, while the cavity of the 1/2-grade geometry is only opened once every turn.

So the double thread geometry of the rotor/stator increases the flow per revolution by 50% compared to the S/L type,

2-Stage Progressive Cavity Pump with twin thread geometry, 150% more flow rate than S-geometry single-stage pump, maximum differential pressure 12bar 170psi.

The geometric shape and size of the first-stage double-start thread are the same as that of the screw pump and the second-stage screw pump, and the ellipse and eccentricity are also the same. But the pitch is twice that of the double-ended 2-stage shape rotor/stator. Therefore, at a maximum differential pressure of 6bar 85psi, the pump produces a flow ratio of 300% that of the S-shaped geometry

Standard Factory Availability

1) ST D's factory has a variety of accessories, we offer quick turnaround to help reduce equipment downtime, you don't need to have a lot of inventory.

2) For spare parts, fast shipment is possible, ensuring that production is uninterrupted or reduced to a minimum of downtime. With good service and very competitive price, customers can earn time profit from cooperating with us.

very competitive price

As customers pay more and more attention to operation and maintenance costs, we need to prioritize the price and availability of spare parts when evaluating plant savings and efficiency.

Using their engineering knowledge and production capabilities, STD companies are able to produce spare parts of good quality and competitive prices (spare parts for NETZSCH, SPEEDEX, MONO, VISCOTEC, STD, etc.)

quality assurance

STD is a professional R & D and manufacturer of single screw pumps and spare parts. The product quality has been tested and recognized by customers in the professional market, and has won the recognition and praise of customers.

STD Common Parts Overview

STD has a solid reputation for the quality of its equipment and parts. In recent years it has been our mission to use our manufacturing and engineering expertise to expand our product offering to include a range of high quality STD common parts for many other brands of Progressive Cavity (PC) pumps.

We offer STD universal parts that can be used with other brands of single screw pumps in the following series. For others not listed, please contact STD

1) NETZSCH™ 2) SEEPEX™ 3) MONO™

International excellent brand screw pump accessories supply

STD uses its own professional knowledge, manufacturing capabilities and channels to provide a full range of screw pump accessories for major global brands (Germany Netzsch, Seepex, Mono, etc.), these accessories are excellent in performance and durable, including: stators, rotors, drive shafts, Coupling, PIN, PIN or complete set of rotating parts, etc.

We can provide universal spare parts of NETZSCH brand

We can provide universal spare parts of SEEPEX brand

We can supply MONO brand general spare parts

certified

1) What products does STD provide?

STD provides global solutions for screw pumps, screw pump accessories, and fluid system products.

Product range overview of STD

Progressive cavity pumps for conveying and metering low to high viscosity media with or without solids

Macerators are used to macerate solid and fibrous components in media

Control systems for monitoring, regulating and controlling processes

Services: consulting, commissioning, maintenance, NETZSCH,SEEPEX, andmononucleosisGeneral spare parts, repairs and various service contracts

2) Does STD offer custom pumps?

Yes, this is our specialty, we customize our modular systems with different designs and material combinations for each application. This means we develop the best technical and most economical solution for your needs.

3) Can STD spare parts be ordered online?
Yes, it is possible to order STD Progressive Cavity Pumps and spare parts online as well as general accessories of other brands (NETZSCH, SEEPEX.MONO). To order, please contact us.

4) How soon can my STD pump be delivered?

Typically, standard pumps are delivered within 4 to 6 weeks. In urgent cases, the delivery time may be between 2 and 5 days. Please contact us. Tel: 0086 -189 4242 4342

5) Packaging; Transportation

1) Standard export packing: We pack the pumps and accessories in wooden cases and put them in containers. Shipping by sea and air. .

2) The marking on the packing box is carried out according to the international standard

3) Please check the packaging and integrity of the goods when receiving the goods, and report to the carrier immediately if there is any damage.

4) If you have special packaging requirements, please inform us.

6) Product quality assurance

According to international standards, the whole pump is guaranteed for 1 year,

6 months warranty on spare parts

Buyer Note:

1) Can the screw pump run dry?

No, the conveying elements are always in contact with each other, which means that dry running must be avoided in progressive cavity pumps. STD dry running protection device provides reliable protection.

2) What temperature is suitable for using STD pump?
STD Progressive Cavity Pumps can be used in temperatures ranging from -20 °C to 150° C (-4 to 302° F).

Company Profile

Guangdong Star Fluid System Co., Ltd. is the largest professional manufacturer of screw pumps, screw valves, and exhaust system screw products in South China

Screw pumps, screw valves, and exhaust system screw products have advanced technology, perfect structure, various forms, complete specifications, and durability, and are widely used in sewage treatment, chemical industry, papermaking, food processing, pharmaceuticals, energy, environmental protection, 3D printing and other industries .

The company has a team of engineers with rich experience, mature technology, high quality and trustworthy design, manufacture, testing and after-sales service of screw pumps. Provide customers with high-quality products, excellent solutions and efficient services in the field of fluid systems.

While producing and developing screw pump products, it also provides global screw product general accessories (including German Netzsch, Seepex, Viscotec, British mono and other brand accessories) and maintenance customization services, and provides free technical consulting services and improved optimized designs. Our excellent processing ability, rich practical experience and mature technical advantages provide a stable guarantee for our products.

our service

1 Our company's screw pump series products have reasonable prices, high-quality services, and quality inspections. OEM is welcome.

2 We have a dedicated quality supervision department to ensure the quality of mass production.

3 If there is a quality problem with the product, we will deal with it as soon as possible, find out the reason, and take responsibility.

4 If you are interested in our products and company, please leave us a message or email us, we will reply you within 24 hours

Why choose us?

1 Factory direct sales, no intermediate links, competitive price

2 Our machines are all original machines imported from Europe, the quality of the products produced is stable, and no inferior equipment is used.

3 Make sure delivery on time, purchasing, we can provide the best service quality control, shipping, documents, etc.

4 We provide samples and OEM service.

5 We will reply your inquiry within 24 hours.

6 More than 20 years of experience in the industry, as well as a professional team, make our customers feel at ease in cooperating with us

7 Please contact us by email, we will send you more pictures for you to choose our products.

How to order STD screw pump?

1) Sample approval

2) Customers arrange 30% deposit after receiving our PI (Proforma Invoice),

3) We start the mass production and finish the production within the agreed delivery time

4) We send the shipping documents to the customer

5) The customer arranges the balance payment

6) We arrange the shipment and send the original documents or telex the goods

		Address: No. 2 Hengfeng Road, Science and Technology Industrial Park, Nanhai District, Foshan City, Guangdong Province
		Tel: 0086-18942424342
		WeChat:0086-18942424342
		WeChat: 0086-18942424342
		Contact: Ms. Zhang Jun
		Showroom: https://screwpump.en.alibaba.com
		www.screwpump.top

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