Tag Archives: screw conveyor design

China Professional China Sand Screw Conveyor Price with Free Design Custom

Product Description

 
LS Screw Conveyor

Introduction:
Screw Conveyor is the essential equipment of dry mortar mixer plant ,concrete mixing plant,which plays important role in the product line.It is suitable for all industries such as building material, chemical industry, power industry, metallurgy, coal industry and CZPT industry and for horizontal or tilted transportation for powdery, granular and small lump materials such as coal, dust, residue, cement and CZPT which their temperature is less than 200ºC. Screw conveyor is not suitable for materials with perishable, big viscosity and easily caked.

Working Principles :

The motor drives the helical blades by driving reducer in a close steel pipe, to deliver powder and CZPT (cement, fly ash etc) continuously and discontinuously.

Main Components of Screw Conveyor:

Motor, reducer, outer pipe, screw mandrel, middle-hoist bearing, tail bearing, universal joint, charging door flange.Which has the characters of compact design, low noise, good seal and convenient for layout.

Main Technical Specification:
1.Type: Named by the diameter of outer pipe. Larger in diameter, larger in delivery volume.
2.Delivery length (L): Distance between charging door and discharging door, namely the itinerary that materials go through in the conveyor pipe.
3.Delivery angle: Angle between screw conveyor and horizontal plane. The bigger the angle, the fewer volume the conveyor can delivery at the same condition.
4.Delivery volume: delivery capacity per hour, T/H.
5.Connection of charging: Connected by universal ball joint, convenient for adjusting when installation.
 

Model Screw diameter Screw pitch n—rotation speed(r/min), allowable deviation<10%
Q—volume(m3/h), fill-factor=0.33
(mm) (mm) n Q n Q n Q n Q
LS160 160 112 112 8 90 7 71 6 50 4
LS200 200 100 100 14 80 12 63 10 50 7
LS250 250 90 90 24 71 20 56 16 45 13
LS315 315 80 80 34 63 26 50 21 40 16
LS400 355 71 71 64 56 52 45 41 36 34
LS500 400 63 63 100 50 80 40 64 32 52
LS630 450 50 50 145 40 116 32 94 25 80
LS800 500 40 40 208 32 165 25 130 20 110
LS1000 600 32 32 300 25 230 20 180 16 150

Features of Screw Conveyor:
A) High quality motor and gear box, with heavy duty design, large torque and low noise.
B) outside tube complete with 1 inlet, 1 outlet, end flange, ball joint , inspection window. 
C) standard fitting parts, middle bearing, end bearing, spline shaft coupling. 
D) Lifting eyes on each tube section, convenient for transport and installation.
E) small diameter, great efficiency, high throughout rates.
Photos of Screw Conveyor:

Why Choose Us?
1. Quality Price
We have been in this field over 20 years, so we have great advantage in good quality with competitive price.
2. Test
Top production test equipment and production equipment to guarantee the product quality.Our product can totally meet SGS, BV, CIQ etc. test.
3.Packing
Wooden Box Package with fit for sea ship .
4. Transport
The products can be transported by big shipping company, we buy Insurance Policy for every client.
5. Service
We offer specialized logistic service including export declaration,customs clearance and every detail during shipment. This makes us CZPT to offer you one-stop service from the order to the products transported to your hand.

 FAQ of Screw Conveyor

1: What is the condition to provide a correct offer ?
Kindly provide the filling material size ,density and capacity ,then we will offer it accordingly.
2: What is your acceptable payment term?
L/C,T/T,Western Union.
3: How about the validity of the offer?
Usually our offer is valid for 1 month. However, validity might vary between different products.
4: What documents you provide?
Usually, we provide Commercial Invoice, Packing List, Bill of lading,   and Origin Certificate. Please let us know if you need additional documents.
5: What is loading port?
Usually loading port is HangZhou port, besides, ZheJiang Port, HangZhou Port is totally no problem for us, and also we can ship from other ports as your requirement .
Contacts:

 

The Functions of Splined Shaft Bearings

Splined shafts are the most common types of bearings for machine tools. They are made of a wide variety of materials, including metals and non-metals such as Delrin and nylon. They are often fabricated to reduce deflection. The tooth profile will become deformed with time, as the shaft is used over a long period of time. Splined shafts are available in a huge range of materials and lengths.

Functions

Splined shafts are used in a variety of applications and industries. They are an effective anti-rotational device, as well as a reliable means of transmitting torque. Other types of shafts are available, including key shafts, but splines are the most convenient for transmitting torque. The following article discusses the functions of splines and why they are a superior choice. Listed below are a few examples of applications and industries in which splines are used.
Splined shafts can be of several styles, depending on the application and mechanical system in question. The differences between splined shaft styles include the design of teeth, overall strength, transfer of rotational concentricity, sliding ability, and misalignment tolerance. Listed below are a few examples of splines, as well as some of their benefits. The difference between these styles is not mutually exclusive; instead, each style has a distinct set of pros and cons.
A splined shaft is a cylindrical shaft with teeth or ridges that correspond to a specific angular position. This allows a shaft to transfer torque while maintaining angular correspondence between tracks. A splined shaft is defined as a cylindrical member with several grooves cut into its circumference. These grooves are equally spaced around the shaft and form a series of projecting keys. These features give the shaft a rounded appearance and allow it to fit perfectly into a grooved cylindrical member.
While the most common applications of splines are for shortening or extending shafts, they can also be used to secure mechanical assemblies. An “involute spline” spline has a groove that is wider than its counterparts. The result is that a splined shaft will resist separation during operation. They are an ideal choice for applications where deflection is an issue.
A spline shaft’s radial torsion load distribution is equally distributed, unless a bevel gear is used. The radial torsion load is evenly distributed and will not exert significant load concentration. If the spline couplings are not aligned correctly, the spline connection can fail quickly, causing significant fretting fatigue and wear. A couple of papers discuss this issue in more detail.
splineshaft

Types

There are many different types of splined shafts. Each type features an evenly spaced helix of grooves on its outer surface. These grooves are either parallel or involute. Their shape allows them to be paired with gears and interchange rotary and linear motion. Splines are often cold-rolled or cut. The latter has increased strength compared to cut spines. These types of shafts are commonly used in applications requiring high strength, accuracy, and smoothness.
Another difference between internal and external splined shafts lies in the manufacturing process. The former is made of wood, while the latter is made of steel or a metal alloy. The process of manufacturing splined shafts involves cutting furrows into the surface of the material. Both processes are expensive and require expert skill. The main advantage of splined shafts is their adaptability to a wide range of applications.
In general, splined shafts are used in machinery where the rotation is transferred to an internal splined member. This member can be a gear or some other rotary device. These types of shafts are often packaged together as a hub assembly. Cleaning and lubricating are essential to the life of these components. If you’re using them on a daily basis, you’ll want to make sure to regularly inspect them.
Crowned splines are usually involute. The teeth of these splines form a spiral pattern. They are used for smaller diameter shafts because they add strength. Involute splines are also used on instrument drives and valve shafts. Serration standards are found in the SAE. Both kinds of splines can also contain a ball bearing for high torque. The difference between the 2 types of splines is the number of teeth on the shaft.
Internal splines have many advantages over external ones. For example, an internal spline shaft can be made using a grinding wheel instead of a CNC machine. It also uses a more accurate and economical process. Furthermore, it allows for a shorter manufacturing cycle, which is essential when splining high-speed machines. In addition, it stabilizes the relative phase between the spline and thread.
splineshaft

Manufacturing methods

There are several methods used to fabricate a splined shaft. Key and splined shafts are constructed from 2 separate parts that are shaped in a synchronized manner to transfer torque uniformly. Hot rolling is 1 method, while cold rolling utilizes low temperatures to form metal. Both methods enhance mechanical properties, surface finishes, and precision. The advantage of cold rolling is its cost-effectiveness.
Cold forming is 1 method, as well as machining and assembling. Cold forming is a unique process that allows the spline to be shaped to the desired shape. The resulting shape provides maximum contact area and torsional strength. Standard splines are available in standard sizes, but custom lengths can also be ordered. CZPT offers various auxiliary equipment, such as mating sleeves and flanged bushings.
Cold forging is another method. This method produces long splined shafts that are used in automobile propellers. After the spline portion is cut out, it is worked on in a hobbing machine. Work hardening enhances the root strength of the splined portion. It can be used for bearings, gears, and other mechanical components. Listed below are the manufacturing methods for splined shafts.
Parallel splines are the simplest of the splined shaft manufacturing methods. Parallel splines are usually welded to shafts, while involute splines are made of metal or non-metals. Splines are available in a wide variety of lengths and materials. The process is usually accompanied by a process called milling. The workpiece rotates to produce the serrated surface.
Splines are internal or external grooves in a splined shaft. They work in combination with keyways to transfer torque. Male and female splines are used in gears. Female and male splines correspond to 1 another to ensure proper angular correspondence. Involute splines have more surface area and thus are stronger than external splines. Moreover, they help the shaft fit into a grooved cylindrical member without misalignment.
A variety of other methods of manufacturing a splined shaft can be used to produce a splined shaft. Spline shafts can be produced using broaching and shaping, 2 precision machining methods. Broaching uses a metal tool with successively larger teeth to remove metal and create ridges and holes in the surface of a material. However, this process is expensive and requires special expertise.
splineshaft

Applications

The splined shaft is a mechanical component with a helix-like shape formed by the equal spacing of grooves in a circular ring. The splines can either have parallel or involute sides. The splines minimize stress concentration in stationary joints and can be used in both rotary and linear motion. In some cases, splines are rolled rather than cut. The latter is more durable than cut splines and is often used in applications requiring high strength, accuracy, and smooth finish.
Splined shafts are commonly made of carbon steel. This alloy steel has a low carbon content, making it easy to work with. Carbon steel is a great choice for splines because it is malleable. Generally, high-quality carbon steel provides a consistent motion. Steel alloys are also available that contain nickel, chromium, copper, and other metals. If you’re unsure of the right material for your application, you can consult a spline chart.
Splines are a versatile mechanical component. They are easy to cut and fit. Splines can be internal or external, with teeth positioned at equal intervals on both sides of the shaft. This allows the shaft to engage with the hub around the entire circumference of the hub. It also increases load capacity by creating a constant multiple-tooth point of contact with the hub. For this reason, they’re used extensively in rotary and linear motion.
Splined shafts are used in a wide variety of industries. CZPT Inc. offers custom and standard splined shafts for a variety of applications. When choosing a splined shaft for a specific application, consider the surrounding mated components, torque requirements, and size requirements. These 3 factors will make it the ideal choice for your rotary equipment. And you’ll be pleased with the end result!
There are many types of splines and their applications are endless. They transfer torque and angular misalignment between parts, and they also enable the axial rotation of assembled components. Therefore, splines are an essential component of machinery and are used in a wide range of applications. This type of shaft can be found in various types of machines, from household appliances to industrial machinery. So, the next time you’re looking for a splined shaft, make sure you look for a splined one.

China Professional China Sand Screw Conveyor Price     with Free Design CustomChina Professional China Sand Screw Conveyor Price     with Free Design Custom

China manufacturer Industrial CZPT Auger Spiral Flexible Screw Elevator Conveyor with Free Design Custom

Product Description

Introduction

Industrial Pipe Auger Spiral Flexible Screw Elevator/Conveyor is bulk material handling equipment, which usually consists of a tube containing either a spiral blade coiled around a shaft (sometimes called an auger), driven at 1 end and held at the other. The main parts include tube, shaft with spiral blades, inlet and outlet chutes, as well as driving device.
The closed pipe-type screw conveyor is a pipe with a shaft inside with welded screw blades and passive bearing. The screw’s blades have different pitch which depends on the type of the transported raw material and the planned capacity. This type of conveyor is closed, which means that the screw cannot be accessed directly. Due to the closed structure, the transported raw material does not spill outside the machine during transport.
The machine can be equipped with a pull screw. In this version, the drive unit is located in the direction of the raw material feeding. Some screw conveyors are equipped with push screws with gear motor installed on the feeding side. The screw conveyor is fitted with an initial or end bearing. Depending on the type of transported raw material, slide or bearing rests are installed.
Horizontal screw conveyor has the advantages of sealed operation, simple structure. screw conveyor suitable for conveying powdery, granular and small bulk materials horizontally or aslope, such as coal, ash, slag, cement, food, etc. screw conveyor is an new transportation equipment.

Features:

Simple structure, good sealing, large capacity, long service life
Convenient installation and maintenance, as well as easy operation.
Working temperature is -20~50ºC, with material temperature below 200 ºC.
Suitable for horizontal and slightly inclined transport of powdery, granular and small lump materials, such as coal, ash, clinker, cement, grain, etc.
Widely used in construction, chemical, power, metallurgy, coal and CZPT industries, etc.

Application: 

Industrial pipe auger spiral flexible screw elevator/conveyor for sugar, flour, coffee, powder is widely used in chemical, metallurgy, paper making, and construction industries. The equipment is mainly suitable for field flowing work, such as concrete mixing station, bulk material transit storage, etc. 

AdvantagePerformance and Features:

It can be sealed to prevent the escape of dust or fumes from inside the conveyor; or prevent dust contamination from outside the conveyor.
It can be used to control the flow of material in processing operations which depend upon accurate batching
It can be utilized in the horizontal, vertical or any inclined position depending upon the characteristics of the product being conveyed.
It can be used as a mixer or agitator to blend dry or fluid ingredients, provide crystallization or coagulant action, or maintain solutions in suspension.
Screw conveyors can have multiple conveyor outlets, making discharge to multiple outlets cost effective.
It can be jacketed to serve as a drier or cooler by running hot or cold water through the jacket.
It can be made out of a variety of materials to resist corrosion, abrasion or heat, depending upon the product being conveyed.
It can be outfitted with multiple inlet and discharge points.

Working Principle:

The screw conveyor consists of power device, gear box, coupling, screw axis and hanging bearing. The screw axis is made of several sections which connected with spline. Hence, the conveyor hold large load capacity and convenient to dismounting. It is open a besel on the casing to ensure a safe operation.
The material moves along the spiral within the tube. The unique action of the flexible spiral conveyor eliminates the risk of the product separation that can take place in conventional pneumatic conveying systems where mixed materials have components of different densities and particle size.
Information Needed For The Quotation
Primary considerations for the selection of a screw conveyor are as follow:
Type and condition of the materials to be handled, including maximum particle size, and, if available, the specific bulk density of the material to be conveyed.
Quantity of transported material, expressed in pounds or tons per hour.
The distance for which the material is to be conveyed.
Below is the necessary information for the selection of a screw conveyor system, presented in a series of 5 steps. These steps are arranged in logical order, and are divided into separate sections for simplicity.The 5 steps are:
Establishing the characteristics of the material to be conveyed.
Locating conveyor capacity (conveyor size and speed) on capacity tables.
Selection of conveyor components.
Calculation of required horsepower.
Checking of components torque capacities (including selection of shaft types and sizes)
 
Maintenance

General Inspection:
Routine periodic inspection of the entire conveyor must be established to ensure continuous maximum operating performance. Keep the area around the conveyor and its drive clean and free of obstacles to provide easy access and avoid functional interference of components.
Power Lock Out:
Lock out power to the motor before attempting any maintenance. Use a padlock and tag on the drive’s controls. Do not remove padlock or tag, nor operate conveyor, until all covers and guards are securely in place.
Removing Screw Sections:
Screw sections are typically removed starting with the end opposite the drive when necessary. Remove trough end, screw sections, coupling shafts, and hangers until damaged or worn section is removed. Reassemble conveyor in reverse order.
Coupling Bolts:
Periodically remove and inspect 1 of the drive shaft coupling bolts for damage or wear. Also inspect the coupling bolt hole. The drive shaft coupling bolts transmit more power than successive coupling bolts and will typically indicate the greatest wear. An accurate torque wrench should always be used when tightening coupling bolts. Excessive torque will stretch the bolt and significantly compromise its strength.
Lubrication:
Lubricate end bearings, hanger bearings and drive components at the frequency and quantity specified by the individual component’s manufacturer. Most types of hanger bearings require lubrication and wear is reduced significantly with a frequent lubrication schedule. Frequency of schedule depends on temperature, type of bearings, type of lubrication, product conveyed, trough load, screw weight, etc.)
Screw Bushings/Internal Collars:
The bushing at each end of a screw will wear over time. When possible, check for excessive shaft movement that indicates bushings need to be replaced. Longer and heavier screws typically have greater bushing wear.

Technical Parameters:
 

Model Screw Diameter Screw Rotation Speed Inclination Angle Conveyor Length
(mm) (r/min) (degree) (m)
GX 200 200 20, 30, 35, 45, 60,
75, 90, 120, 150, 190
< 20° 3~70
GX 250 250
GX 300 300
GX 400 400
GX 500 500
GX 600 600

Introduction of company

ZheJiang Xihu (West Lake) Dis.an Mining Machinery Co., Ltd is a professional manufacturer of screening equipment, conveying machinery and vibrating feeder etc. The company locates in HangZhou, covering above 60 thousand square meters. Since established in 1960s, the company has been taking the scientific management method of the modern enterprise, producing with advanced production technology and considerate service and developing to a promising pearl of the mechanical industry in China. 

Certificate

 

What Are the Advantages of a Splined Shaft?

If you are looking for the right splined shaft for your machine, you should know a few important things. First, what type of material should be used? Stainless steel is usually the most appropriate choice, because of its ability to offer low noise and fatigue failure. Secondly, it can be machined using a slotting or shaping machine. Lastly, it will ensure smooth motion. So, what are the advantages of a splined shaft?
Stainless steel is the best material for splined shafts

When choosing a splined shaft, you should consider its hardness, quality, and finish. Stainless steel has superior corrosion and wear resistance. Carbon steel is another good material for splined shafts. Carbon steel has a shallow carbon content (about 1.7%), which makes it more malleable and helps ensure smooth motion. But if you’re not willing to spend the money on stainless steel, consider other options.
There are 2 main types of splines: parallel splines and crowned splines. Involute splines have parallel grooves and allow linear and rotary motion. Helical splines have involute teeth and are oriented at an angle. This type allows for many teeth on the shaft and minimizes the stress concentration in the stationary joint.
Large evenly spaced splines are widely used in hydraulic systems, drivetrains, and machine tools. They are typically made from carbon steel (CR10) and stainless steel (AISI 304). This material is durable and meets the requirements of ISO 14-B, formerly DIN 5463-B. Splined shafts are typically made of stainless steel or C45 steel, though there are many other materials available.
Stainless steel is the best material for a splined shaft. This metal is also incredibly affordable. In most cases, stainless steel is the best choice for these shafts because it offers the best corrosion resistance. There are many different types of splined shafts, and each 1 is suited for a particular application. There are also many different types of stainless steel, so choose stainless steel if you want the best quality.
For those looking for high-quality splined shafts, CZPT Spline Shafts offer many benefits. They can reduce costs, improve positional accuracy, and reduce friction. With the CZPT TFE coating, splined shafts can reduce energy and heat buildup, and extend the life of your products. And, they’re easy to install – all you need to do is install them.
splineshaft

They provide low noise, low wear and fatigue failure

The splines in a splined shaft are composed of 2 main parts: the spline root fillet and the spline relief. The spline root fillet is the most critical part, because fatigue failure starts there and propagates to the relief. The spline relief is more susceptible to fatigue failure because of its involute tooth shape, which offers a lower stress to the shaft and has a smaller area of contact.
The fatigue life of splined shafts is determined by measuring the S-N curve. This is also known as the Wohler curve, and it is the relationship between stress amplitude and number of cycles. It depends on the material, geometry and way of loading. It can be obtained from a physical test on a uniform material specimen under a constant amplitude load. Approximations for low-alloy steel parts can be made using a lower-alloy steel material.
Splined shafts provide low noise, minimal wear and fatigue failure. However, some mechanical transmission elements need to be removed from the shaft during assembly and manufacturing processes. The shafts must still be capable of relative axial movement for functional purposes. As such, good spline joints are essential to high-quality torque transmission, minimal backlash, and low noise. The major failure modes of spline shafts include fretting corrosion, tooth breakage, and fatigue failure.
The outer disc carrier spline is susceptible to tensile stress and fatigue failure. High customer demands for low noise and low wear and fatigue failure makes splined shafts an excellent choice. A fractured spline gear coupling was received for analysis. It was installed near the top of a filter shaft and inserted into the gearbox motor. The service history was unknown. The fractured spline gear coupling had longitudinally cracked and arrested at the termination of the spline gear teeth. The spline gear teeth also exhibited wear and deformation.
A new spline coupling method detects fault propagation in hollow cylindrical splined shafts. A spline coupling is fabricated using an AE method with the spline section unrolled into a metal plate of the same thickness as the cylinder wall. In addition, the spline coupling is misaligned, which puts significant concentration on the spline teeth. This further accelerates the rate of fretting fatigue and wear.
A spline joint should be lubricated after 25 hours of operation. Frequent lubrication can increase maintenance costs and cause downtime. Moreover, the lubricant may retain abrasive particles at the interfaces. In some cases, lubricants can even cause misalignment, leading to premature failure. So, the lubrication of a spline coupling is vital in ensuring proper functioning of the shaft.
The design of a spline coupling can be optimized to enhance its wear resistance and reliability. Surface treatments, loads, and rotation affect the friction properties of a spline coupling. In addition, a finite element method was developed to predict wear of a floating spline coupling. This method is feasible and provides a reliable basis for predicting the wear and fatigue life of a spline coupling.
splineshaft

They can be machined using a slotting or shaping machine

Machines can be used to shape splined shafts in a variety of industries. They are useful in many applications, including gearboxes, braking systems, and axles. A slotted shaft can be manipulated in several ways, including hobbling, broaching, and slotting. In addition to shaping, splines are also useful in reducing bar diameter.
When using a slotting or shaping machine, the workpiece is held against a pedestal that has a uniform thickness. The machine is equipped with a stand column and limiting column (Figure 1), each positioned perpendicular to the upper surface of the pedestal. The limiting column axis is located on the same line as the stand column. During the slotting or shaping process, the tool is fed in and out until the desired space is achieved.
One process involves cutting splines into a shaft. Straddle milling, spline shaping, and spline cutting are 2 common processes used to create splined shafts. Straddle milling involves a fixed indexing fixture that holds the shaft steady, while rotating milling cutters cut the groove in the length of the shaft. Several passes are required to ensure uniformity throughout the spline.
Splines are a type of gear. The ridges or teeth on the drive shaft mesh with grooves in the mating piece. A splined shaft allows the transmission of torque to a mate piece while maximizing the power transfer. Splines are used in heavy vehicles, construction, agriculture, and massive earthmoving machinery. Splines are used in virtually every type of rotary motion, from axles to transmission systems. They also offer better fatigue life and reliability.
Slotting or shaping machines can also be used to shape splined shafts. Slotting machines are often used to machine splined shafts, because it is easier to make them with these machines. Using a slotting or shaping machine can result in splined shafts of different sizes. It is important to follow a set of spline standards to ensure your parts are manufactured to the highest standards.
A milling machine is another option for producing splined shafts. A spline shaft can be set up between 2 centers in an indexing fixture. Two side milling cutters are mounted on an arbor and a spacer and shims are inserted between them. The arbor and cutters are then mounted to a milling machine spindle. To make sure the cutters center themselves over the splined shaft, an adjustment must be made to the spindle of the machine.
The machining process is very different for internal and external splines. External splines can be broached, shaped, milled, or hobbed, while internal splines cannot. These machines use hard alloy, but they are not as good for internal splines. A machine with a slotting mechanism is necessary for these operations.

China manufacturer Industrial CZPT Auger Spiral Flexible Screw Elevator Conveyor     with Free Design CustomChina manufacturer Industrial CZPT Auger Spiral Flexible Screw Elevator Conveyor     with Free Design Custom