Hot Sale Stainless Steel Screw Shaft Agricultural Machinery Spiral Helical Blade

Product Description

Hot Sale Stainless Steel Screw Shaft Agricultural Machinery Spiral Helical Blade

Product Description

Screw conveyor series screw conveyor is divided into horizontal screw conveyor and vertical screw conveyor from the angle of displacement direction of conveying materials. It is mainly used for horizontal conveying and vertical lifting of various loose materials, such as powder, granular and small pieces. It is not suitable for conveying deteriorative, viscous, caking or high temperature, pressure-resistant and relatively high. Special materials with high corrosiveness. Screw conveyor is widely used in various industries, such as building materials, chemical industry, power, metallurgy, coal mine, grain and other industries. 

       Product name: Helicoid Screw Flight

       Other name: Screw blade, auger flight, auger blade, screw

       Material: Carbon Steel, Stainless steel, and other material

       Thickness: 2.5mm-6mm, 15mm-30mm

       Main Use: Usually, it is used on the screw conveyor and drill equipment.

       Main parameters as below: (we also can design as per customer's request)

         Most screw conveyors contain the following components:
         •A conveyor screw, also known as a spiral blade or helicoid flighting
         •A screw conveyor trough or tubular casing
         •A drive unit (a shaft coupling and shaft seal or a chain drive)
         •The drive mechanism

         Most screw conveyors contain the following components:
         •A conveyor screw, also known as a spiral blade or helicoid flighting
         •A screw conveyor trough or tubular casing
         •A drive unit (a shaft coupling and shaft seal or a chain drive)
         •The drive mechanism


     A Screw Conveyor or auger conveyor is a mechanism that uses a rotating helical screw blade,
     called a flighting, usually within a tube, to move liquid or granular materials.
     They are used in many bulk handling industries.
     Screw conveyors in modern industry are often used horizontally or at a slight incline as an
     efficient way to move semi-solid materials, including food waste, wood chips, aggregates,
     cereal grains, animal feed,boiler ash, meat and bone meal, municipal solid waste,
     and many others. 
 

Applications by Industry

Bulk Material Handling:

• Mining: Ore, coal, aggregates conveying systems

• Agriculture: Grain augers, feed handling, fertilizer conveyors

• Construction: Cement, sand, gravel handling equipment

• Food Processing: Grain, flour, sugar, powdered materials

Industrial Processing:

• Chemical: Powder and granule conveying in processing plants

• Pharmaceutical: Material handling in controlled environments

• Waste Management: Municipal solid waste, recycling facilities

• Plastics: Pellet conveying in manufacturing plants

Specialized Equipment:

• Drilling: Earth augers for construction and geothermal

• Mixing: Ribbon blenders, paddle mixers, continuous mixers

• Extrusion: Feed screws for plastic and food extrusion

• Marine: Cargo handling systems on ships and docks

 

Technical data Model Specification		Helical Diameter mm	Pitch mm	Speed r/min	Standard Volume Conveyance			Speed r/min	Standard Volume Conveyance			Speed r/min	Standard Volume Conveyance			Speed r/min
					lv(m³/h)				lv(m³/h)				lv(m³/h)
				n	Diameter			n	Diameter			n	Diameter			n
					0.45	0.33	0.15		0.45	0.33	0.15		0.45	0.33	0.15
Medium-sized	LS200	200	200	100	16.9	12.4	5.6	80	13.5	9.9	4.5	63	10.7	7.8	3.6	50
	LS250	250	250	90	29.7	21.8	9.9	71	23.5	17.2	7.8	56	18.5	13.6	6.2	45
	LS315	315	315	80	52.9	38.8	17.6	63	41.6	30.5	13.9	50	33.1	24.2	11	40
	LS400	400	355	71	85.3	62.5	28.4	56	67.3	49.3	22.4	45	54.1	39.6	18	36
Large	LS500	500	400	63	133.2	97.7	44.4	50	105.8	77.6	35.3	40	84.6	62	28.2	32
	LS630	630	450	50	188.9	138.5	63	40	151.1	111	50.4	32	120.9	88.6	40.3	25
Oversize	LS800	800	500	40	270.7	198.5	90.2	32	216.6	159	72.2	25	169.2	124.1	54.4	20
	LS1000	1000	560	32	379	277.9	126	25	296.1	217	98.7	20	236.9	173.7	79	16
	LS1250	1250	630	25	520.5	381.5	174	20	416.4	305	139	16	333.1	244.3	111	13

         Material: carbon steel, manganese steel, stainless steel, can meet the requirements of customers
         from different way.
         Continued cold rolling when it has 2-8mm thickness, outer Dia. ≤800MM
         Continued twisting when it has 3-20 thickness.
         Feature/ characteristic: Stamping and extending which adapted for any product but need making
         specified mold.
         Finishing: rolled cold finishing or polishing, or as your requirments.
         Packing: Pallets for free fumigation if there is no special requirments.

       The conveyor screw (a spiral blade coiled around a shaft) is housed inside the tubular casing, where it is
       driven at one end and held at the other. The trough may or may not feature a trough cover. Sometimes,
       screw conveyors feature a spiral blade, but no shaft. In this case, they are called shaft less screw
       conveyors, and the blade is driven at one end and free at the other.

FAQ

Q1: What is the difference between sectional flight and continuous helix?
A: These refer to how the blade is manufactured and attached:

• Sectional Flight: Individual "rings" or short sections are produced and then welded together end-to-end on the shaft. This method is more economical, easier to transport, and allows for different pitches in different sections. It's common for large diameters and custom lengths.

• Continuous Helix: The entire blade is formed from a single strip of steel in one continuous spiral. This creates a smoother, stronger joint-free surface, which is better for handling sticky or cohesive materials that might catch on weld seams. It's typically used for smaller diameters and high-volume production.

Q2: How do I determine the correct pitch for my application?
A: The pitch (the distance between consecutive turns of the blade) is critical for material flow rate and conveying efficiency.

• Standard Pitch: Usually equal to the blade diameter (1:1 ratio). Good for most general conveying.

• Half Pitch (1/2 x Diameter): Used for inclined conveyors, sticky materials, or when precise metering is needed.

• Long Pitch (>1 x Diameter): Used for free-flowing, non-abrasive materials to maximize capacity.
  Our engineers can recommend the optimal pitch based on your material characteristics, conveyor angle, and desired capacity.

Q3: What thickness of spiral blade should I choose?
A: Thickness depends on material abrasiveness, screw diameter, and rotational speed.

• Light Duty (3-6mm): For non-abrasive materials (grain, flour, plastic pellets) and smaller diameters (<250mm).

• Medium Duty (6-10mm): For moderately abrasive materials (sand, coal, fertilizers) and medium diameters.

• Heavy Duty (10-20mm+): For highly abrasive materials (crushed ore, slag) or large diameters (>600mm). May require wear-resistant steel or hard-faced edges.

Q4: Can you provide blades with wear protection?
A: Yes, we offer several wear-protection solutions:

• Material Upgrade: Using abrasion-resistant (AR) steel plate (like Hardox, NM series) for the entire blade.

• Hard-Facing: Applying a welded layer of extremely hard alloy (like chromium carbide) to the leading edge or outer periphery of the blade.

• Replaceable Tips: Bolting on tungsten carbide or AR steel wear plates to the blade edge.

• Special Coatings: Industrial coatings to reduce friction and adhesion.

Q5: What information do you need to provide a quotation or design?
A: Please provide as many details as possible:

1. Blade Dimensions: Outside Diameter (OD), Inside Diameter (ID or shaft size), Pitch, and Length.

2. Material Specification: Type of steel (e.g., Q235, 304SS, Hardox 400).

3. Application Details: What material is being conveyed? What is its density, abrasiveness, moisture content?

4. Operating Conditions: Conveyor angle, rotational speed (RPM), environment (dry, wet, corrosive).

5. Quantity Required.

6. Mounting Method: Welded, bolted, or other.

Q6: What manufacturing methods do you use?
A: We primarily use two methods, chosen based on your specs:

• Cold Rolling (Most Common): A strip of steel is passed through a series of rollers to form the spiral shape. It's efficient, precise, and cost-effective for medium to high volumes.

• Press Forming / Cutting: For very thick plate, special profiles, or low-volume custom shapes, we use plasma/laser cutting followed by press bending.

• We will select the optimal method for your requirements.

Q7: Can you make custom or non-standard spiral blades?
A: Yes, customization is our specialty. We can produce:

• Variable Pitch Screws: Where the pitch changes along the length (e.g., for compacting or mixing).

• Tapered Screws: Where the diameter increases or decreases.

• Ribbon Blades & Paddle Flights: For mixing applications.

• Special Edge Profiles: Beveled, notched, or flighting with cutouts.

• Unique Dimensions: Any diameter, pitch, and thickness combination.

Q8: What is your Minimum Order Quantity (MOQ)?
A: For standard sizes and materials, our MOQ can be as low as 100 meters of total blade length (can be multiple pieces).
For custom-designed blades requiring new tooling (rolls or dies), the MOQ is higher, typically 500-1000 meters depending on complexity.
We are flexible for new customer trial orders.

       You can look through our website to find your interest or email your any questions through
       below approach! We will reply to you within 12 hours.