JULI Engineering

There are many places which need the unloading of bulk materials such as specialized marine terminal, steelworks, large-scale thermal power plants, storage yard of mining. The bucket wheel stacker reclaimer is one kind of continuous conveyors. The materials could be transported according to the fixed landline with constant or variational speed. Most EPC companies would choose the bucket wheel stacker reclaimer to complete the materials transportation. In the loading and unloading operation of bulk materials, the stacker reclaimer is the main part of line production transportation. The stacker reclaimer could coordinate with other conveying equipment to make up different technological processes, meeting the different requirements of different storage yards and operation points. The apron feeder and belt conveyor are the common matching equipment. The stacker reclaimer plays an important role in bulk handling inside of ports and in materials transportation outside of ports. Besides, t

The stone crusher or crushing machine would crush materials and then the materials would reach other conveyors such as screw conveyor , belt conveyor, stacker reclaimer and etc. The conveyor components should have long service life. The crushing is the essential craft process during the process of manufacturing cement. The advanced and reliable crushing process and equipment matters in cement production. There are five common crushing methods adopted by building materials industry. They depend on the mechanical force. The stone crusher or crushing machine uses the following crushing methods.      a─crushing   b─trituration   c─hacking  d─breaking   e─shredding crushing (figure a) The materials are under the slow increasing pressure between two metal plates. When the materials stress reaches crushing strength, the materials would crush, which is used for crushing the hard block materials.     trituration (figure b) The materials do relative move among metal plates or various g

The screw conveyor is widely used in power plant, cement, mining, chemical and other industries for transporting the materials. Sometimes, the screw conveyor will be used in automated warehouse with stacker reclaimer, pipe conveyor, stone crusher and other equipment. The processing difficulty of helical blade is large, which greatly influences the performance and costs. There are three common manufacture methods of helical blade. The first one is to use special rolling brake, which is suitable for volume-production but has high requirements on equipment. The second one is cold-forming with low efficiency and bad quality of blade. The third one is hot rolling method with complex process and high labor intensity. As a professional conveying equipment manufacture, our company has obtained a new process(cold pressing method) after many years' exploring. This method is efficient and simple, which could produce the blades with high quality. The Principle of Pressing The sheet meta

The EPC is the common method for EPC companies, which is in favor of clarifying various complex relationships such as owner and contractor, enforcing authority and main market players. The advantages of EPC are as follows: The first one is Optimization of resource allocation. The foreign experience has proved that the EPC has reduced the occupancy of resources and administrative cost. In our country, the three aspects are showed. The owner is free of various affair, which avoids the waste of personnel and fund. The general contractor reduces the cost of alteration, dispute, and claim for compensation. The subcontractor's division of labor could be increased. The scale economy is easy to form. The EPC, construction contracting and subcontract could form tower structure. The unitary type of organization form could change into synthesizing type, which could integrate fund, technology, management as large enterprise groups. The market share could be extended. The government

The chain bucket ship unloader is a kind of continuous ship unloading machinery for bulk materials. It could use chain bucket to excavate materials from the ship cabin, and then transport materials through belt conveyor to the wharf. There are several advantages compared with grab ship unloader. 1. High Unloading Efficiency The chain bucket ship unloader's efficiency could reach over 65%, while the grab ship unloader could keep between 50% ～55%. The chain bucket ship unloader could change the shape of reclaiming head, which could reclaim the materials in maximum. Besides, the capacity of continuous ship unloader is larger than grab ship unloader by 20%. 2. Environmental Protection The materials could be transported in sealing condition during the operation of the chain bucket ship unloader, which would not result in flying dust. The grab ship unloader would produce the flying dust during operation. 3. Energy Conservation The chain bucket ship unloader has no frequent ac

The EPC is the common method for EPC companies , which is in favor of clarifying various complex relationships such as owner and contractor, enforcing authority and main market players. The advantages of EPC are as follows: The first one is Optimization of resource allocation. The foreign experience has proved that the EPC has reduced the occupancy of resources and administrative cost. In our country, the three aspects are showed. The owner is free of various affair, which avoids the waste of personnel and fund. The general contractor reduces the cost of alteration, dispute, and claim for compensation. The subcontractor's division of labor could be increased. The scale economy is easy to form. The EPC, construction contracting and subcontract could form tower structure. The unitary type of organization form could change into synthesizing type, which could integrate fund, technology, management as large enterprise groups. The market share could be extended. The government secto

The bucket wheel excavator does not travel when excavating the materials. The compound motion of rotating of bucket wheel and cantilever crane helps to excavate the materials. The materials would drop to the conveyor belt receiving the materials. And then the materials would be transported to conveyor belt to the transport machines. In general, the bucket wheel excavator has a long distance in aspect of technology, manufacturing level compared with advanced countries. The types and quantities could not meet the demands of open mining industry. The following problems exist.  The bucket wheel excavator and its supporting auxiliary equipment are complex. There are some limitations in the usage. The equipment is bulky. The low mobility and poor flexibility are main problems.  The digging force is small. For the large and hard rock, the direct operation is more difficult, generally not suitable for use in hard rock. The initial investment cost of bucket wheel excavator is large wit

Belt conveyor is a kind of the economic and modern transportation equipment with long history. In its 200 years of history, pipe conveyor occupies an important position in the conveyor. Due to the requirements of environmental protection in the world is more and more urgent, since 1972 the pipe belt type conveying machine since the birth of all walks of life come into use among them, the most common is the stacker reclaimer and apron feeder. The pipe conveyor belt in the conveying process suggests that exist in the pipe, conveying material on the frame. The material feeding section from the tail of the hopper into the conveyor belt, by a flat deformation type U again After the transition gradually into tubular material, wrapped and sealed operation. Transported to the head of filtration, the tubular belt is unfolded from U shape into flat, the material is removed. The bearing, the return process can form a tube or run in parallel form. Since twentieth Century, the green design has b

The screw conveyor is widely used by coal, building materials, chemical industry as a continuous conveyor department of food processing and machinery etc., suitable for horizontal or inclined conveying powder, granular and small bulk materials, such as coal, coal, cement, grain, EPC companies often with a belt conveyor, stacker reclaimer , apron feeder the use of with the use of heavy plate feeder, screw conveyor in life depends mainly on the spiral blade life. The spiral blade mainly stretch forming, rolling molding, die casting, extrusion molding, molding method for different section shape of spiral blade, large The majority of methods to obtain the same thickness of spiral blades, analysis and study of the working conditions of the spiral blade on the development of spiral blade forming methods, increase the wear resistance of the blade is essential. The spiral conveyor leaf without wear, against the cylinder wall, the sealing ring for drive shaft support, keep the center positio

The kiln of rotary kiln adopts refractory brick and water-cooling cylinder roller. It could make the garbage uniformly mixed through overall rotation of the whole kiln. In order to make the garbage reach the condition of perfect combustion. The secondary combustion chamber will be set. There are three incineration methods including lime-ash incineration, slag incineration, and pyroly decomposition incineration. Lime-ash incineration: The temperature control should be between 800-900℃. The hazardous wastes would be destroyed by melting or burning. Because of the low temperature of furnace box temperature, the corrodibility and oxidability of hazardous wastes to fireproofing of rotary kiln. Slag incineration: The slag incineration deals with single and wastes with stronger toxicities. The temperature would be over 1500℃, whose purpose is increasing the effects of destroy by melting or burning. Sometimes, temperature control is difficult, which needs high level of operation. Pyroly

The mechanical device of ship loader consists of various parts. During the mechanical transmission, some parts would produce the friction in the contact surface, which results in the damage of the parts and influencing the accuracy and service life of the equipment. It is estimated that 80% of parts are damaged resulting from frictional wear. In order to reduce friction wear and prolong the service life, the lubricating oil is adopted in the key points of ship loader. The functions of lubricating oil are as follows: 1. reduce the friction: The lubricating oil is added on the friction surface, which reduces the friction coefficient and energy consumption. 2. anti-attrition: The lubricating oil could reduce abrasive wear, surface fatigue wear and adhesive wear. 3. cooling: The lubricating oil could absorb heat and transfer heat, which could reduce the temperature of frictional heat. 4. antirust action: If the lubricating oil lies on the friction surface, the lubricating oil could pr

The bucket wheel stacker reclaimer is an important equipment for the continuous loading and unloading of bulk materials in modern industry. It is mainly used in ports, docks, metallurgy, cement, steel mills, coking plants, coal storage plants, power plants and other large bulk materials such as ore, coal, coke, gravel and other storage in the storage yard. The traveling device is to support the weight of the important parts of the whole equipment. Traveling device includes drive trolley, driven trolley, balance beam, drive device, clip rail, anchor, clear rail, balance beam pin, buffer and other components. In the actual application process, there will be different faults. Sometimes the travelling device would rock in reclaiming process. In the normal work, the rocking degree is small. However, if the amount of shaking is too large, we should check it timely. Bucket wheel withstands the relatively large vertical force in the direction of the cantilever direction, that is, lateral for