Biomass refers to all organic matter, or in other words, the material that all plants and animals, living or dead, are made-up of. Since plants live and grow they are, by nature, a renewable resource. Wood has been, and contin
ues to be, the most common type of renewable biomass utilized as fuel, but virtually all biomass can be used to generate energy. Muyang pelleting machine preparation systems maximize the effective and efficient reclamation of energy from any lignocellulosic biomass feedstock.

In addition to harvested wood and forestry residues, these feedstocks include energy crops and agricultural residues, as well as biowaste found in commercial, industrial and consumer waste streams. Muyang has built systems that process all of these biomass feedstocks. These systems range from simple to sophisticated. It depends on the composition of the biomass fed into the system and the type of fuel that it is being converted to. Conversion of biomass to biofuel is achieved by methods broadly classified as: thermal, chemical and biochemical. Muyang has experienced in building feedstock prep systems for all of these biofuel conversion methods.

The sustainable management of our biomass resources must play a vital role, if we free ourselves from fossil fuel dependency. Sustainable management of our biomass resources not only refers to growing and harvesting plants in an ecologically sound manner. It also means that the biomass must be converted to biofuel in an effective, efficient, and economically feasible manner.

The pellet machine included in prep systems is determined by the composition of the biomass feeding into the system and the specifications required on the prepared material that will be fed into a particular biofuel conversion technology. Machinery and technologies available from Muyang for biomass conversion prep systems include: Receiving stations, Primary size reduction, Screening, Air classification, Metals separation, Optical sorting, Secondary shredding, Storage, Testing, Metered feeding, Conveying between workstations, and Integrated controls for the entire system. Most systems employ some, but not all of these.

Increasing aquaculture activity and growing consumption of fish resulting from rising consumer awareness about health benefits will continue to drive the demand for aqua-feed over next five years, with a predicted growth rate of 11.4% annually.

However, fluctuating prices of key ingredients used in manufacturing fish feed such as fish meal and fish oil is expected to cut margins of animal feed machines manufacturers and will affect the growth of the market adversely. Therefore, low-cost alternative, conventional and functional aqua-feed, is expected to help the market and industry players to take advantage of opportunities and cope with new challenge to grow sustainably in near future, particularly for Asia Pacific– the market where led 65% market share in the world.

Although extrusion is of good raw material adaptability and capable to process different materials, the understanding of the process is still very limited, and it is hard to find out suitable extrusion process parameters to ensure both feed quality and production output of a particular alternative recipe. For feed mills, the research usually depends on trial-and-error experiments and experience, and is a very expensive task in terms of time and raw material cost.

In Muyang, we not only develop new feed machines, make innovations on them, but also research improved methods, tools and experience for their new applications to meet new challenge and create consistent value in our customers' feed mills.

The extruder is mainly composed of a feeder, a conditioner and principal machine.

Feeder

The feeder is mainly composed of a speed-reducing motor, a coupling, a protective guard, a helical rotor, a feeding shell, an access door and an exhaust cover etc.
The feeder needs to install an expected extruding bin with certain capacity, to ensure the continuing producing of the expanded equipment;
The expected extruding bin shall take anti-bridging measures such as asymmetrical structure while installing and producing, meanwhile，it can also take cut-off feeding protection measures such as install vibrating motor before the material entering the feeder, to ensure the homogeneity and continuity of feeding and so ensure the normally, continuously and stably operating of the main motor;
The expected extruding bin connects directly with the joint of feeder, the feeder is equipped with a standard flange and this flange may be used in welding with the expected extruding bin. For the dimension of the feeder joint see the scaled drawing diagram;
The feeder of the feed machinery is frequency conversion variable speed motors, to control the feed rate through the frequency conversion variable speed.

Conditioner

During production, the materials enter into the conditioner shell body through the feeder and have a preliminary ripening. The materials in the shell body of conditioner will mix, infiltrate with the steam by the action of conditioner blades and stay in the conditioner for a certain time. The materials are able to achieve a certain ripening degree. The materials enter the sidelong feeder, which connect with the conditioner, by the action of gravity after leaving the shell body of conditioner. The materials will be force fed into the principal feed machine of the extruder though the effect of sidelong feeder.

A bridge-breaking shaft is set up between the shell body of conditioner and the sidelong feeder in order to prevent the bridging. The Lower part of the outlet of conditioner has also a bridge-breaking shaft in front of the conveying screw of extruding chamber in case of material bridging. Advantages of conditioning treatment:
(1) Promotion of production capacity since materials are cooked partly by the steam, the mechanical energy needed to warm up the products to the maximum temperature is much less; therefore, in terms of equipment with a given power, its production capacity is much higher than that of a dry-type.
(2) Larger molding capacity Steam and water increase the moisture content in materials, which improves greatly the molding performance and the final quality of the products.
(3) Abrasion reduction of the extrusion Since the cooked materials have corresponding temperature and ripening degree, high pressure or frictional force are not needed in the machine chamber and moisture can play a part in lubrication. This can reduce greatly the fretting corrosion, thus to increase the service life of the machine chamber and screw.
(4) Increase of the scope of products; the improved physical properties provided by the cooking work make this extruder able to produce more extensive products

Environment conditions:
In order to operate this equipment safely, please install it according to following operating conditions.
(1) Please install this equipment indoors according to following conditions:
 Ambient temperature range (-15~+40°C)
 Relative humidity: within 30%~85%
 Altitude: less than 1000m
 Guarantee indoor cleaning and ventilation
 Guarantee that the equipment is far away from the corrosive gas, inflammable and explosive gas as well as steam
(2) Power source: as for Voltage and frequency, Please refer to the nameplate; pressure ≧0.6Mpa
(3) For easy use, operation and maintenance, please check this equipment and reserve enough space for it. (Please refer to scaled drawing 4-1 for installation)
(4) Please place the equipment horizontally.

Attention points:
(1) The feed machine operator must carry out the operation on the basis of sufficient understanding the operation manual.
(2) For safety attention points, the owner has the duty and obligation to deliver the contents of the Operation Manual for the equipment to all working personnel.
(3) At the same time when obeying all the safety attention points, the users also must obey the safety regulation and stipulations to prevent accidents.
(4) All related employees should receive safety education. The enterprise management should be in charge of it and respect the national, local and the other enterprise’s safety regulations of the users.
(5) Any reformation of the equipment may not affect the functions and safety performances of the equipment.
(6) Please install, use and operate the equipment correctly. Whoever takes off guard or makes it dysfunctional should be responsible for the safety result.
(7) Be sure to run the conical drum powder precleaner under strict obeying all regulations for prevention of accidents.
(8) If any accidents are caused due to not obeying the stipulations in the Operation in the Operation Manual and the control system for Muyang machinery equipment is not used as per the conditions mentioned above, the Muyang Group will refuse to take any responsibility.

There are two ways to install Muyang SFJH series Rota-shake Sifters: support base type and suspension type. For support base type installation, the stander of the sifter is directly installed on foundation throught anchor bolts, while suspension type installation is without stander and hanging mechanism, the carrier of the sifter can be directly suspended on the roof of the factory building throught wire ropes; however, there are certain requirements to the installation site and the factory building.



This feed machine leaves the factory as a whole and usually applies support base type installation. Before installation, check against the dimensions in the sample diagram of equipment for enough space, especially the space for operation, maintenance and accessory replacement. To ensure the stability of stationariness, installation site of the sifter shall be solid and horizontal. Meanwhile, material weight in the sifter shall be considered in calculation. The base of sifter shall be connected with the foundation through anchor bolts tightly to prevent the sifter from offset during running.

If suspension installation is applied, it is suggested to assemble the four wire ropes with turnbuckles so as to level the carrier of the sifter. Meanwhile, protection device must be used to protect the sifter when any of the wire ropes is broken.

SFSP-M Series Hammer Mill is mainly composed of a base, a rotor, an upper housing, a feeder and a motor etc. And the rotor consists of a main shaft, hammer supports, pins and hammers etc. While the feeder is a forcing feeder specialized for herbage hammer mill.


Herbage (in bulk or in bundle) to be ground enter into the grinding chamber through a matched forcing feeder from the lateral-installed inlet. By the impacting action of high-speed running hammers and the friction action of the screen, the particle size of the material shall be evenly reduced. Then it will pass through the screen and be discharged out of the bottom outlet by centrifugal force and air flow.

Structure of main components

Base:
The base of the feed machinery is a welded part made of section steel and motor base. It is used to support and connect all the component parts into a whole unit. After ground, the material is discharged out from the base bottom.

Rotor：
Consisted of such parts as the main shaft, hammer supports, pins, hammers and bearings etc. the rotor is a key moving part of the hammer mill. Since the rotor rotates in a high speed, it needs to be dynamically balanced after installation without pins and hammers.

Upper housing:
The upper housing is a welded part made of steel plates. It is connected to the base, together with the screen and the rotor forming the grinding chamber. Material is ground in the grinding chamber.

Feeder:
The feeder for herbage hammer mill is a specially made forcing feeder. The reducing motor drives the rotating shaft then the chain with “teeth” to feed material into the grinding.

Muyang recently announced that on July 21, 2011 it wrapped up a contract with Daware Group to supply a feed mill, for the first time, in Shigatse of the far west province Tibetan Autonomous Region, China.


Daware group, with annual revenue of 556 million RMB, is an important construction company in Tibet. To expand into feed industry for its business diversification, Daware once had difficulty in finding a competent technology partner because of the endemic geological and climatic conditions in Tibet. The extreme environmental factors such as the arctic weather and the low atmospheric pressure require resilient equipment and engineering technology of special specifications and standards.

Impressed by Muyang’s experience in feed mill construction at home and abroad and its competitive advantage of customized solution providing ability, especially the optimal solution commit to the sustainable development of customers and environment, Daware finally entered partnership with Muyang.

The material flow rate can be adjusted through the baffle at head section. It is suggested to adjust the distance between baffle and bucket outer edge to 5mm.



Punching two φ6mm openings at the bottom of each bucket can diminish negative pressure and facilitate feeding and discharging. Material should be evenly and steadily conveyed to the feeding inlet of elevator. Too fast feeding or too large feeding rate may cause blockage in the boot section. Once blockage happened, your must stop the motor first, then open the insert gate of boot section to clean out the material. Only after that, the motor can be restarted again. The backstop device must work reliably and the belt cannot run back. When running with full-load, make sure the there is no belt-slip problem. Once belt-slip happened, the speed monitoring device should act on to stop the motor.

Make sure the motor, the speed reducer and the backstop device are running stably. It is necessary to stop the elevator only when materials are emptied from the buckets, and stopping under loading condition is not allowed unless emergency. Usually, stop feeding and run the elevator without load for 1-3 min to emptily discharge material in it, and then stop the elevator. Record the whole process of rest-run (incl. parameters such as current, voltage, temperature rise of bearing, conveying rate and running time etc. Check whether these parameters are conformed to the requirements of design and specification or not).

When starting a production, start the back feed machine first in order, and then start the elevator and the front equipment. After that, feed material into the process flow. Material flow rate of the feeding inlet should be controlled in a proper range. Material flow rate relationship of the front and back equipment is: front equipment < elevator < back equipment. And material must be evenly fed into the elevator. It is suggested to equip a surge hopper on the head of feeding inlet so that material can be fed uniformly. The sequence for stopping is opposite to that of starting. Note that stop feeding first, then let the elevator ideal run for 1~3 min to empty material in it, after that stop the equipment according to stopping sequence.