The difference and advantages of shafted and shaftless screw conveyors

Screw conveyors are classified according to shaft diameter, which can be divided into two types: shafted screw conveyors and shaftless screw conveyors. Shaftless screw conveyors are not easy to use in the environment of large angles, and are generally conveyed horizontally or at small angles.

Disadvantages of shafted screw conveyor: it is not easy to convey block-shaped, easy-winding, and viscous materials.

<> the mechanical principle and function of shaftless screw conveyors are basically the same, and they are all used for material conveying equipment. There is a difference between different types of screw conveyors, and they are improved by ordinary screw conveyors according to customer requirements and applications in different industries. The shaftless screw conveyor can convey materials that cannot or are not easy to be conveyed by traditional shafted screw conveyors and belt conveyors, such as granular and powdery materials, wet and pasty materials, semi-fluid and viscous materials, easily wound and clogged materials, and materials with special hygiene requirements.

The shaftless screw conveyor has strong winding resistance, because the machinery has no central shaft, there is no interference when conveying the easily wound material, and it can be conveyed easily and quickly, which can not be done by the shafted screw conveyor.

Product advantages: Compared with the traditional shafted screw conveyor, the shaftless screw conveyor has the following outstanding advantages due to the use of no central shaft design and the use of integral steel screw pushing materials with a certain flexibility: strong winding resistance.

There is no interference of the central shaft, and it has special advantages for conveying belt-like and easy-to-wrap materials.

Because the spiral has no shaft, the material is not easy to be blocked, and the discharge port is not blocked, so it can run at a lower speed, drive smoothly and reduce energy consumption. The torque force is large, and the conveying capacity is large.

It can convey materials that cannot or are not easy to be conveyed by traditional shafted screw conveyors and belt conveyors, such as granular and powdery materials, wet and pasty materials, semi-fluid and viscous materials, easily winding and clogged materials, and materials with special hygiene requirements.

Product disadvantages: There are two main reasons why blades are easily damaged:

1. Since there is no intermediate shaft, all the stress points are on the blade, so the thickness of the blade has a very important impact on the actual use of the equipment. Choosing a spiral blade of appropriate thickness directly affects the use effect.

2. The equipment conveys materials, and the blades and the bottom lining plate are in contact with rotation, which is easy to wear.

The selection and design of screw conveyor needs to be correctly selected according to the properties of different materials, and the different properties of materials play a decisive role in the selection and design of shaftless screw conveyors. It determines the practicability and efficiency in future production

1>. Good environmental performance. The fully enclosed and easy-to-clean spiral surface ensures that the material to be fed is not contaminated and will not leak the conveyed material.

>2. The conveying capacity is large, and the conveying capacity is twice that of the shafted screw conveyor of the same diameter.

3>. Large rotation distance, low energy consumption, and no blockage at the discharge port.

4. >. The conveying distance is long, and the conveying length of a single machine can reach 60 70m.

5>. Compact structure, space-saving, beautiful appearance, easy operation, economical and durable.

The difference between shaftless screw conveyor and shafted screw conveyor mainly depends on the working conditions of the materials you convey, the main difference lies in whether there is a central shaft design, each with its own characteristics and advantages.

There are three differences. First, the shape of the structure.

Shaftless screw conveyor composition: drive, shell, liner, shaftless blade, cover, etc.;

Shafted screw conveyor composition: drive, shell, inner tube shaft, blade, cover plate, etc.;

Second, the situation of the conveyed materials.

The shaftless screw conveyor is suitable for conveying materials: sludge, domestic garbage, grid slag and other viscous, winding loose materials and block materials, it is precisely because the design of the shaftless screw conveyor without a central shaft has great advantages for these materials.

The shafted screw conveyor is suitable for conveying materials: powder, small particle materials, etc., if the conveying of viscous materials such as sludge will stick to the inner pipe shaft and blades, and the conveyed lumpy materials are easy to stuck.

3. Conveying form.

Shaftless screw conveyor is suitable for: horizontal conveying, the maximum inclination angle should not exceed 20°, according to the actual use of the right.

Shafted screw conveyor is suitable for: horizontal conveying, inclined conveying, vertical conveying.

The combination of industrial and mining and conveyed materials allows professional manufacturers to provide the best design drawings for your selection and design.

First of all, from their internal structure to distinguish, in fact, it is enough to understand in the literal sense that there is no intermediate shaft in the middle of the shaftless screw conveyor, and usually wear-resistant liners will be used, of course, its spiral hole blades are also thicker than the shafted screw conveyor, and the shafted screw conveyor is supported by a screw shaft in the middle, and the blades do not need to be so thick to meet the conveying of materials.

The second is that the materials they need to convey will be different, the shaftless screw conveyor generally conveys some viscous materials that are easy to wind, and they are easy to stick to the screw shaft, so when transporting these materials, it is necessary to choose a shaftless screw conveyor, and the shafted screw conveyor has a wide range of materials, and can also transport some powdery materials.

Then there is a difference in their appearance, most of the shaftless screw conveyors will adopt the shape of U-shaped sections, while the shafted screw conveyor has two options, one is tubular type, the other is U-shaped, which requires no shaftless screw conveyor.

Finally, there is the difference between the two in the form of transportation. The conveying angle of the shaftless screw conveyor generally cannot exceed 30 degrees, otherwise it is easy to cause the material to fall off when conveying the trembling material, and the shafted screw conveyor can exceed 30 degrees because of the support of the screw shaft, and even close to the vertical conveying of materials, of course, these are customized according to the actual needs of users.

The advantages and disadvantages of shaftless screw conveyors are as follows:1. Advantages: no adhesion or blockage, conveying distance up to 32 meters, completely sealed conveyor, no chain guessing peculiar smell or overflow, low maintenance cost.

2. Disadvantages: the blade is easy to wear and the inclination angle is small.

The above is an introduction to the advantages and disadvantages of shaftless screw conveyors, shaftless screw conveyors have been successfully used in the entire chemical, food and calling, mineral processing and wastewater treatment industries, for conveying a variety of viscous, paste, ribbon and other materials that are easy to block.

Summary. Compared with other traditional conveying equipment, the structure and working principle of shaftless rotary conveyor are more complex, and high-performance motors and controllers are required to ensure their normal operation. Therefore, the production cost of shaftless rotary conveyors is higher.

At the same time, it needs to go through multiple processes and strict quality inspection in the production process, so its production cycle is also relatively long. In addition, the design and manufacture of shaftless rotary conveyors require a professional technical team and advanced production equipment, which is one of the reasons for its relatively high input costs. As a result, the production of shaftless rotary conveyors requires a significant investment of money and time, as well as the use of high-precision, high-quality materials and components.

Due to the above reasons, the production cost and cycle of shaftless rotary conveyors are relatively high compared with other traditional conveying equipment, resulting in their relatively low output.

Compared with other traditional conveying equipment, the structure and working principle of shaftless rotary conveyor are more complex, and high-performance motors and controllers are required to ensure their normal operation. Therefore, the production cost of shaftless rotary conveyors is higher. At the same time, it needs to go through multiple processes and strict quality inspection of Shuyou in the production process, so its production cycle is also relatively long.

In addition, the design and manufacture of shaftless rotary conveyors require a professional technical team and advanced production equipment, which is one of the reasons for its relatively high input costs. As a result, the production of shaftless rotary conveyors requires a significant investment of money and time, as well as the use of high-precision, high-quality materials and components. Due to the above reasons, compared with other traditional conveying equipment, the production cost and cycle of shaftless rotary conveyors are relatively high, resulting in their relatively low output.

Can you elaborate on that a little bit more?

Compared with other traditional conveying equipment, the structure and working principle of shaftless rotary conveyor are more complex, and high-performance motors and controllers are required to ensure their normal operation. Therefore, the production cost of shaftless rotary conveyors is higher. At the same time, it needs to go through multiple processes and strict quality inspection of Shuyou in the production process, so its production cycle is also relatively long.

In addition, the design and manufacture of shaftless rotary conveyors require a professional technical team and advanced production equipment, which is one of the reasons for its relatively high input costs. As a result, the production of shaftless rotary conveyors requires a significant investment of money and time, as well as the use of high-precision, high-quality materials and components. Due to the above reasons, compared with other traditional conveying equipment, the production cost and cycle of shaftless rotary conveyors are relatively high, resulting in their relatively low output.

Features of shafted screw conveyor:

1.Large bearing capacity, safe and reliable.

2.Strong adaptability, easy installation and maintenance, long life.

3.The whole machine is small in size and high in speed to ensure fast and uniform conveying.

4.The sealing is good, the shell is made of seamless steel pipe, and the ends are connected to each other by flanges, with good rigidity.

High-efficiency conveying: The spiral body design with small diameter, high speed and variable pitch ensures that the product is loaded smoothly, quickly and evenly during the working process.

Random arrangement: The shell of the conveyor is connected by high-quality seamless steel pipe through each section of the flange as a whole, the overall rigidity is good, whether it is horizontal or large inclination angle can be continuously conveyed, and can be directly connected and fixed with its supporting equipment, without the need for foundation, make full use of space, and it is very convenient to move and disassemble.

Reliable sealing: The lubrication seal is reliable and leak-free, which does not waste materials and creates a good working environment.

Diversified connection: the inlet and outlet can be connected by universal joint, cloth bag and flange, and can also be combined with the butterfly valve and plug-in valve produced by our factory.

Shaftless screw conveyor:

Shaftless screw conveyor design points U-shaped cross-section: the shape is basically the same as LS series screw conveyor. Shaftless spiral transmission:

The spiral body is a thick ribbon spiral, shaftless helix, and the head is connected to the drive shaft. The structure is divided into single and double blades, and the material is divided into carbon steel and stainless steel, and the ampere-pitch ratio is 1:1 and 2:

3 of both. Sliding liner: shaftless spiral body middle and tail working supports, the material is divided into three categories: high-strength engineering plastics, stainless steel, and other high-wear-resistant materials.

WLSY shaftless screw conveyor working parts: basically the same as WLS type working parts, absorbing the excellent and mature technology of LSY series screw conveyor, and having the structural characteristics of WLS type screw conveyor. Round tube casing:

Good sealing performance, up to air tightness level (performance, can work under positive and negative pressure conditions.