The screw conveyor consists of machine head, inlet, conveying section, screw and tail.Various external housing of the equipment is sealed with rubber pads to ensure sealing performance of the equipment.
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Features of Screw Auger Conveyor
1.Large carrying capacity, safe and reliable.
2.Cycloid pinwheel do slow transmission, large transmission torque.
3.Strong adaptability, convenient installation and repair, long service life, and can be used for conveying a variety of powdery, granular and scrap materials. Levels and small angle(0°~20°).
4.Screw Conveyor is in small size, low noise, flexible arrangement of inlet and outlet position.
5.Optional material blocking preventing alarm, speed alarm.
Advantages Of Screw Auger Conveyor
1. Efficient delivery : small diameter , high rotating speed, large transmission capacity, variable pitch of spiral body, and small resistance of intermediate bearing make loading material smoothly, quickly and evenly.
2. Random arrangement : conveyor has good integral rigidity and can transport the products flatly or steeply inclined, it can be connected with its corollary equipments directly , and can be set up and dismantled easily with small floor space.
3. Good lubrication : low oil lubricating sliding tile, multilayer labyrinth oil seal design and integral lubricating system composed of of oil pump, distributor and pipeline are convenient and can completely lubricate all the running parts.
4. Reliable sealing : the dust cover of reducer is reliable for preventing leakage which can protect reducer and create good working condition. Improved peephole can prevent water seepage and material leakage.
5. Diverse connection : feed inlet and outlet can be connected not only with universal ball, bag,flange etc but also butterfly valve and gate valve.
6. Innovative design: special reducer designed and produced with introduced technology not only has the advantages of a small size, a big bearing torque ,low noise, no oil leakage etc, but also has the stable quality , reliable performance and long life.
Specifications Of Screw Auger Conveyor
|TLSS16||160||160||3-5||65-85||Powder material and granular material conveying.
It can be widely used conveying raw materials,
seimi finished grains, feed pellets etc., for CZPT warehouse, port, wharf etc.
First, the brown rice is fed to rice polisher through screw head. the surface of the rice CZPT is polished by friction under a certain pressure and temperature. Through the polishing treatment, not only the floating surface of the rice CZPT can be cleared, but also the starch is pregelatinized and gelatinized on the surface of the rice starch, and the starch gelatinization makes up for cracks, thereby obtaining the smooth appearance, improving the storage life of the rice, therefore polished rice is very necessary.
[Consulting Service] Our consultant provides you with pre-sales expertise consulting services, system evaluation, providing the best engineering solution
[Engineering Service] Set up special project team of technical, installation and sales for you. to design, install and commissioning a complete set of equipments, whole process tracking service.
[Training Service] Our experts in technology and management provide you long term production, operation, management, maintenance and other professional skills training, to help you train operation, technology, management personnel.
[Spare Part Service] We provides high-quality and reliable original accessories. And the service centers also keep store of a certain number of common accessories to meet the demand of rapid supply.
[Site service] Our service engineer goes deep into your site to solve practical problems. Conduct on-site training on the use of products and seek for improvement of a new way of thinking and method to reduce cost and increase efficiency.
1. What is the delivery time of this machine if we book order right now?
We will deliver your order within 30-60days depend on different of machines.
2. How do you pack this machine for exporting?
We will provide packing which is suitable for the agreed means of transportation and for the foreseeable conditions of storage at the destination.
3. How can we make inspection before delivery?
We welcome you send your inspection manager come to our factory for inspection or you can nominate international the third part inspection company.
4. What is the warranty for your machine?
If any defect or non-conformity arising from faulty design, materials, we shall eliminate defects or replace machine.
5. What is the installation requirement of this machine?
The foundation of the machine should be with sufficient strength to support the weight of the machine.
There should be enough space around the machine for maintenance and inspection.
Screw Sizes and Their Uses
Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.
The major diameter of a screw shaft
The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.
The pitch diameter of a screw shaft
When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.
The thread depth of a screw shaft
Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.
The lead of a screw shaft
Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.
The thread angle of a screw shaft
The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.
The tapped hole (or nut) into which the screw fits
A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.