Why Choose Us
Our History
Since its establishment, the company has always adhered to the business policy of "professional technology as the core, precise processing and manufacturing, bold innovative ideas, and high-quality service".
Our Factory
Zhengzhou Zhongxiang Machinery Equipment Co., Ltd. has strong strength, covers an area of 2000 square meters, has 6000 square meters of standardized heavy industrial workshop, more than 200 sets of processing, welding, assembly equipment, online staff more than 100 people.
Production Equipment
Zhengzhou Zhongxiang machinery equipment Co., Ltd. has strong strength, has a standardized heavy industrial workshop of 6000 square meters and large and medium-sized processing, welding, assembly equipment more than 200 sets.
Production Market
The products are not only sold well in more than 20 provinces and regions in China, but also exported to dozens of countries and regions in Eastern Europe, the Middle East, Asia, Africa, North America, South America and Oceania.
Wood pellet machine is a kind of pellet machine for processing the raw materials like sawdust, wood, peanut shell, straw, leaves and so on. Nowadays, there are various different types of pellet mill in the market. And the typical two types are flat die pellet mills and ring die pellet mills. The wood pellet mill can process many raw materials whatever the size is big or not, and the pellet size also can be customized by the hammer mill.
Process Of Making Wood Pellets
As the name suggested, the homemade wood pellet mill is suitable for home use. Due to the advantages of homemade pellet mill, people can make wood pellets at home with small pellet mill by themselves. And these wood pellets can be used as fuel for home heating, BBQ or the fireplace.
There are four types engine for homemade pellet machine to choose, including electric motor, diesel, PTO and gasoline motor. Clients can order the suitable type according to your requirements. If you are confused about how to select the homemade pellet mill, we provide the free guide for every client.
First, you need to turn on the pellet mill.
Next, you should put the raw materials into the wood pellet machine. (GEMCO suggest that you should put 20% sand, 65% biomass raw materials and 15% used oil if the pellet mill is first work.)
And then the pellet mill begins to work.
When you put the raw materials into the working room, all these biomass materials will spread on the millstone. The spindle drives the disc to rotate. The pressure roller continuously rolls over the raw materials and squeezes the material into the die hole. The raw materials undergo the process of forming and preservation in the die hole after a certain period of time is extruded in a cylindrical state. Then the cutter will cut down the material formed pellets. All the material will be shaped into the pellets after grinding. And these pellets don't need water or glue to molding. That is the procedure of the homemade pellet mill.
- The belt tightness ought to be checked regularly. If it is now slack, it needs to be tightened immediately.
- The equipment ought to be positioned in a properly-ventilated area to make sure the temperature produced by the motor can emit safely, to extend the lifespan of your machine.
- Before restarting the device, any remaining debris must be cleared in the machine room to decrease starting resistance. (Related post：1–1.5T/H wood pellet plant in Lebanon)
- Oil needs to be filled regularly to each and every bearing to market inter-lubricating.
- To make certain the cutter remains sharp, check this part regularly to avoid unnecessary damages for any other part.
- Regularly inspect the cutter screws, to make certain the bond in between the knife and blade remains strong.
The machine should take a seat on a good foundation. Regular upkeep of your machine will prolong the entire lifespan of the machinery.
What Are The Advantages Of Using a Wood Pellet Machine?
Performance
One of the major advantages of using a wood pellet device is that it is highly efficient. The machine can create a lot of pellets in a short amount of time, making it an optimal choice for business objectives. In addition, the maker is developed to produce high-grade pellets with a consistent size and shape. This makes sure that the pellets shed efficiently and generate a constant quantity of warmth.
Cost-Effective
An additional advantage of using a timber pellet machine is that it is economical. The device is designed to deal with wood waste and also sawdust, which are commonly taken into consideration waste items and can be acquired at a affordable. Additionally, the pellets generated by the equipment are more affordable than typical gas such as coal or oil. This makes wood pellets an optimal option for those that are seeking to conserve money on their energy bills.
Environmentally Friendly
Timber pellets are thought about to be a carbon-neutral gas source, which means that they do not add to global warming. When timber pellets are burned, they launch the exact same quantity of co2 that the tree absorbed during its lifetime, making it a lasting and also environmentally friendly choice. In addition, timber pellets create less discharges than traditional fossil fuels, which aids to minimize air contamination. Read Full Report.
Versatile
Wood pellets can be made use of for a selection of functions, making them a flexible choice for those that are searching for alternate fuel sources. They can be used for heating houses and organizations, creating electricity, and also for cooking. Additionally, timber pellets can be utilized in a variety of pellet cooktops and central heating boilers, making them a flexible choice for those who are searching for a adjustable heating solution.
Easy to Store and also Transportation
Wood pellets are simple to store as well as transportation, making them a convenient alternative for those who reside in locations where conventional gas resources might be tough to obtain. They can be kept in bags or in bulk and also can be transferred in vehicles or trailers. In addition, wood pellets have a low wetness content, which suggests that they can be stored for extended periods of time without deteriorating.
Classification of Wood Pellet Mill and working principle
The main component of flat die pellet mill includes a flat round iron die and a group of (2-4) free rolling rollers with grooves. Feedstock falls into the roller clearance from above to bottom which enters into the holes of die through rotating force, then extruding into long cylinder from the bottom of die hole, cutting by the cutter into pellets. There are mainly three driving models, driving roller, driving flat die and dual drive. Flat die pellet mill has the features of simple structure, easy to manufacture, low cost and fit for coarse fiber materials. But the internal diameter and external diameter of flat die has different surface speed (peripheral speed) and feedstock on the flat die bear different centrifugal force, which make the feedstock bear different compressing force. So the diameter of flat die is not too large, or the quality of finished product will be affected.
Compress roller of ring die pellet mill is a cylinder wall with many hole, it depends on driving motion to rotate. There are 2-4 free rotating rollers and driven roller with grooves. After coming into the iron model, feedstock enter into the making pellet chamber along with the rotating of roller, embedding into the die hole, compressing through the outer surface of ring die, and cuting into cylinder shape pellet. Main character of ring die pellet is the same surface speed of ring die and compress rollers. There is no extra friction force and all the compress force is being use to make pellet. So the operating is efficient.
This machine mainly depends on mechanical milling, coextrusion and friction force to generate heat, to make the starch dextrinization. At the same time, its own moisture content of the fodder has the plasticity which is easy to form, drying and cut, to finish this process one time.
Soft pellet mill is use to process material which contains 20-30% moisture content. The beating green fodder should mix with powder material to make pellet. Generally, as the process of making pellet, they are use for forage. It is necessary to drying the pellets before storage. Soft pellet mill includes screw type, impeller type and ball roller. Screw type is being use more often. It consists of cylinder body, screw, die holes and so on.
Pellet-fodder expander consists of rotating feeder, wet mixing, chamber of making pellet, cutter, and power transmission and so on. It contains pupa rod and sleeve simply. Working principle of pellet-fodder expander is that screw are rotating with high speed in the sleeve, after compressing and friction force, temperature in the sleeve is increasing( up to 150℃, pressure is up to 30-100 kg/ m³). When the feedstock is compress out from the chamber, the temperature and pressure are lowering quickly. Under the effect of temperature contrast and pressure contrast, moisture content in the feed is evaporating quickly, the volume is expander quickly. So the fodder becomes porous and the moisture content is lowering at 6-9%.
Grinding Before Using
Most roller and flat dies in pellet machine are processed by high-heat treatment. After planing, drilling, milling, and quenching process, there are usually many rags inside the die holes, which may influence the pelletizing effects and production. Therefore, before starting a new pellet machine, or after replacing a new die, you need to grind it thoroughly.
We use oil mixture to process grind the roller and flat die. The oil mixture is composed of 20% fine sand, 65% biomass materials(like sawdust), 15% waste engine oil. Before feeding the oil mixture to the pellet machine, you should adjust the clearance between roller and flat die to 0.1-0.3mm. The grinding process should last 15-40 min.
For ring die pellet mill, the grinding process requires more oil mixture and longer time. The quantity of oil mixture is 10% that of pellet production per hour. The grinding time is 30-50 min. And the clearance between ring die and the roller is 0.1-0.4mm.
Pretreatment of raw materials
The suitable moisture content of biomass materials should between 14% and 20%. Dry materials are hard to take shape, damp materials will make the pellets loose. The size of the raw materials should be less than the hole size of pellet mill dies. Generally, the hole size of the pellet mill die is 6mm and 8mm, and the size of raw materials should be under 5mm, or they may block the holes and reduce pellet production.
The adhesive force determines the forming rate of the pellets. Most biomass materials contain lignin, which would melt under high temperature and serve as binder. But some materials like rice husk has low adhesive force. It need to be mixed with sawdust or binders to make pellets.
The thickness and length of the wood pellets
The thickness of wood pellets is determined by the hole size of the die. The length is determined by the slicer. In flat die pellet machine, the slicer is installed under the flat die, while in ring die pellet machine, the slicer is installed outside the ring die. Both of them can be adjusted to achieve different sizes. For your own use, it is better to be short. For transportation and selling, it recommend to be a little long.
After the wood pellets come out from the pellet machine, they are hot with some steams. They can be dried and cooled in an open field, or by a counter-flow cooler. Quick cooling can improve the hardness of the wood pellets, and facilitate storage and transportation.
Don't shut down the machine right after making pellets
When you finished making pellets, don't shut the pellet machine down at once. Add some mixed oil and biomass materials to the pellet machine and let it run for 1-2 min. In this way, we can fill the die holes with oil mixture, so that we can directly start making pellets the next time. With this process, we can not only maintain the mold, but also save time. When the pellet machine stops, loosen the adjusting screw and clear away the left materials.
The maintenance of roller, die, shafts and gearbox
You should eliminate all hard objects and metal blocks in raw materials before feeding them into the pellet machine, or they would cause damage to the roller, die or main shaft. You can install a tubular magnet on the feed hopper.
The heat inside the pelletizing chamber can reach up to 80℃, and the roller sustains high pressure during operation. As there is no dust protector in the pellet machine, so you need to clean up the bearing every 2-5 hours, and lubricate it with oil. After every 8 working hours, the main shaft need to be oiled. The gearbox need cleaning every half a year. If there is abnormal high heat in the gearbox, you can use better gear oil and increase the clearance between the gears for maintenance. The fastening screw in the transmission part also need to be replaced regularly.
Our Certificate
Our Factory
Since its establishment, the company has always adhered to the business policy of "focusing on professional technology, precision machining and manufacturing, bold and innovative ideas, and high-quality service". The company relies on strong technical force, sophisticated processing equipment and perfect testing methods, so that the technical indicators of the products are in a leading position. After nearly 10 years of exploration and innovation in production and operation experience, it has become a highly competitive and influential machinery enterprise in the industry.
FAQ
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