Product Type: FERTILIZER
Condition: New
Machine Type: Granulator
Output (kg/h): 1300
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Marketing Type: New Product 2571
Warranty of core components: 1 Year
Core Components: PLC, Engine, Bearing, Gearbox, Motor, Pressure vessel, Gear, Pump
Voltage: 220v/380v
Dimension(L*W*H): 2600*1900*2200
Weight (KG): 10000
Power (kW): 55
Warranty: 1 Year
Key Selling Points: Patented Product
Applicable Industries: Manufacturing Plant, Energy & Mining, fertilizer
Showroom Location: Egypt, Germany, Viet Nam, Brazil, Saudi Arabia, Indonesia, Pakistan, India, Russia, South Korea, Ukraine, Nigeria, Uzbekistan, Malaysia, Australia
After-sales Service Provided: Engineers available to service machinery overseas
Color: Customer’s Request
Type: Double shaft screw mixer
Diameter of blade: 500-800mm
Material: Stainless Steel 304
Usage: Making Fertilizer
Capacity: 20-55 t/h
Sample test: Yes
Mixing Speed: 50 rpm
Power: 11-30kw
Packaging Details: Pictured in the specifications of Fertilizer dry roll press granulator
Port: ZheJiang

Product Application The importance of powder granulating technology as 1 of the most important branches of powder particles processing treatment is increasingly clear with the demand of environment protection and improvement of automation of the production process. “Powder products will become granules” has become the necessary trend of powder-after-processing technology in the world.
DH series dry roll press granulator adopts dry rolling technology to compress the powdery materials with moisture content ≤ 5% into pieces or tablets, then going through the processes of breaking into granules and screening to make the lump materials into granules that meet the requirements of application. Dry roll press granulator mainly depends on the manner of external pressure to force the material going through the gap between 2 relatively turning rollers to compress into laminar particles. During course of roller pressing, the real density of materials can increase 1.5~3 times thus CZPT certain demands of granular strength.
Working Principle Produce Irregular shape granule* We use mixer mix the raw material.—Mixer
* We use bucket elevator lift the material up to the silo.—-Bucket elevator and Silo
* The COMPACTOR compress the raw material by double rollers, it mainly depending on the mechanical pressure to compress the dry powder, so the hardness of granular is very high.—-compactor (including 3 parts: dosage screw feeder, forced feeder and flaking machine.)
* Then we get the bar shape products.
* So we need a crusher to crush the bar shape products into 2-4mm irregular granules.—-Crusher (you can decide the size of granules, we will design the size of crusher mesh.)
* Finally, we will use rotary screen to sieve the final products, the unqualified products, such as dust, big granular and very small granular will be recycled for the next time granulation process. You will get the qualified 2-4mm irregular shape granules successfully.——–Rotary Screen
* Next we use the second time rotary screen, the purpose is we want to get better result of irregular shape granules after second time screening, the appearance of irregular shape granular will looks more beautiful. ——-Second Time Rotary Screen (if you don’t need this, you can delete this process.)
* The last step is automatic packaging machine. This machine will help you pack the final granular into bags. —-Automatic Packaging Machine
Produce oval ball, oblate ball, square granule* We use mixer mix the raw material.—Mixer* We use bucket elevator lift the material up to the silo.—-Bucket elevator and Silo * The COMPACTOR compress the raw material by double rollers,the roller shape is oval ball, D2 D3 FRONT AXLE STABILIZER BAR LINKS FIT for Land Rover Disciver FRONT AXLE STABILIZER BAR LINKS FIT RBM500190 oblate ball ,square granule—-compactor (including 3 parts: dosage screw feeder, forced feeder and flaking machine.)* Then we get the oval ball/oblate ball/ square shape products.* Finally, we will use rotary screen to sieve the final products, the unqualified products, such as dust, big granular and very small granular will be recycled for the next time granulation process. ——–Rotary Screen* Next we use the second time rotary screen, the purpose is we want to get better result of regular shape granules after second time screening, the appearance of irregular shape granular will looks more beautiful. ——-Second Time Rotary Screen (if you don’t need this, you can delete this process.)* The last step is automatic packaging machine. This machine will help you pack the final granular into bags. —-Automatic Packaging Machine
Various rollers Finished products uniform shape for big briquettes Irregular shape for small granules
Peripheral equipment Peripheral equipments for granulation line In addition to the pellet machine,we can also provide the whole supporting equipment of granulating process to help you finish the granulating much better. Such as the mixer,feeding machine,the crush machine,the screening machine,drying/cooling machine,conveyor and so on.
Main Features1) Granular strength can be adjusted by adjusting the pressure of roller, control strength of final products.
2) Cycle operations to achieve continuous production. High yield of finished products.
3) Materials are force to compress molding by mechanical pressure, without any additives, the product’s purity is guaranteed.
4) Dry powders are granulated directly without follow-up drying process, the existing production process is easy to convergence & transformation.
5) Granular strength is high, compared with other granulating methods, the improvement sof bulk density are significant，especially for the occasion where increase the proportion of product accumulation.
6) A wide range of raw materials can be used, granular strength can be freely adjusted according to different materials.
7) Compact structure, easy maintenance, simple operation, short process, low energy consumption, high efficiency, low failure rate.
8) Control environmental pollution, reduce waste and powder packaging costs, and improve product transport capacity.
9) Feeding device adopts frequency adjustment control, high automation ,one can control multi-machine, has the features of low labor intensity and long term continuous operation,etc.

Layout of Fuyi granulating processes
Capacity	10 tons/hour
Granulator	2 sets of DH850
Granulating process details	We can design different diagram for different clients, we need to design the layout according our clients provide us some basic information about the size of their factory, and how do they want to place the equipments. Our target is making the process more simple , more easy, more economic and more effective.

Layout of Fuyi granulating processes
Capacity	7-8 tons/hour
Granulator	2 sets of DH650
Granulating process details	Mainly include mixing system, conveying system, HangZhou servo motor 220V 750W 3.0A 2000rpm 3.5Nm CNC Servos Servo motor driver kit 80ST-M5710+MB832 compacting system, crushing, screening, packaging system and dust collecting system.

Automatic control The control system The control system is used for various fertilizer granualtion plant , including the central control system parts, power cabinet parts, cabinet part of field operations, field actuators (such as motors, solenoid valves, etc.), by PLC completed the control.

TECHNICAL PARAMETERS FOR DH SERIES DOUBLE ROLLER GRANULATOR
MODEL	DH240	DH360	DH450	DH650	DH850	DH1050
Roller diameter (mm)	φ240	φ360	φ450	φ650	φ850	φ1050
Valid usable width (mm)	300	170-230	190-280	290-330	420	500
Roller speed (rpm)	50-100	10-25	10-25	10-25	9-16	8.5-14.5
Max rolled sheet thickness (mm)	4	8	12	16	25	36
Rolled sheet output*(kg/h)	/	1300-2300	2500-3500	5000-7000	12000-16000	22000-38000
Finished product output (Kg)	2000-3000(Ellipse)	900-1300	1800-2500	3500-4000	6000-8000	12000-16000
Granular size (mm)	3.5 4.2 4.5 5.5 6.5 etc	2-5	2-5	2-5	2-5	2-5
Main unit power (KW)	45	30-37	55-75	90-110	220-250	400
Total installed capacity (KW)	55	55	90	175	400	850
External dimension (L.W.H.)(mm)	2300×1700×1860	2350×2000×2600	2600×2200×2900	3600×2800×3200	5000×3800×4100	7000×5000×6000

Success cases Granulation line with annual production of 150 thousand tons large granulesQuantity: 6 sets of DH650
Brand: FUYI
Original: China
Dsigned 6 sets of DH650 granulation process program for Ammonium sulphate plant of Belarus, and has been put into production.
Granulation line with Potassium sulphate large granule of 30 tons/hour. Quantity: 4 sets of DH850Brand: FUYIOriginal: China Dsigned 4 sets of DH850 granulation process program for potassium sulphate plant of russia, and has been put into production.
Granulation line with Potassium fertilizer granule of 200 tons/day.Quantity: 5 sets of DH650Brand: FUYIOriginal: CHINA Dsigned 5 sets of DH650 granulation process program for potassium fertilizer plant of bolivia, and has been put into production
Granulation line with compound fertilizer of 20 tons/hour. Quantity: 2 sets of DH1050Brand: FUYIOriginal: ChinaDsigned 2 sets of DH1050 granulation process program for compound fertilizer plant of Malaysia, and has been put into production
Our Service Our commitments Fuyi has designed and manufactured roller presses and equipments for briquetting and compacting NPK fertilizer, powder, chemical, minerals, etc, since 2006. We take care of green field projects as well as of existing plants. Our services cover material tests, process layout, engineering, and supply of complete granulating plants or key equipments, guidance of installation and commissioning, training. Also, the company manufactures and supplies equipment for drying equipments and dust collector machines. Extensive experience and best quality production facilities guarantee a smooth workflow from start to finish.

Types of Screw Shafts

Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which one is the best choice for your project? Here are some tips to choose the right screw:

Machined screw shaft

The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.

Acme screw

An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.

Lead screw

A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, one should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.

Fully threaded screw

A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are two major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically one millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect two elements.

Ball screw

The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.

editor by czh 2023-06-27