JULI Engineering

According to main engine and process requirements, the controlling system of reclaimer employs three control modes including automatic, manual, and maintenance control modes. Automatic control mode: When reclaimer is prepared, the automatic control will be executed after central control room sends stop instruction. In the state of automatic control, starting sequence is according to the requirements of reclaimer equipment and the reclaimer will come into the state of automatic reclaiming. Then the automatic monitoring, giving an alarm, and auto stop instruction for the system failure could be finished. Manual control mode: Manual control processes on the operating table. It is suitable for debugging process, moving from one pile to another pile and arranging the machine assigning location to reclaim materials. It could finish one-step operation of each unit. Maintenance control mode: Maintenance control mode is used in the field maintenance. However, the operating button installa

The stacker reclaimer is widely used in wharf, power plant, metallurgy and other industries. Bucket wheel stacker reclaimer's bucket would craze with high rate of wear, which reduces the service life of bucket. The cracking of bucket makes the production in passive situation. The damage of bucket has following forms: The corner where the tooth is installed cracks. This is the common fault for the damage of bucket. If the equipment continues to operate, the cracking will be more serious, which would result in the unbalance and transformation of bucket disc. The right method is to stop the operation and renew bucket. There is cracking on the chain corner. This is one of the common faults of bucket. If the stacker reclaimer continues to operate, the bucket lip cracking would occur. All we need to do is to stop the operation and renew the damage part. The teeth and lip of bucket are easy to wear. The teeth and lip of bucket are the most important parts of the bucket, which be

The leaking coal of belt conveyor is very common, which increases the working sum and water quantity of washing. There are many reasons about leaking coal. There is leaking coal in forwarding station. If the belt conveyor design for guide chute has problem of small flow capacity, the coal would leak from the guide chute. For the above problem, we could increase the height of guide chute and install arched cover plate to control the load capacity of coals. The leaking coal would appear when the coals are in the hollow belt section. The belt has left the  trough roller unit, the coal would leak because of small groove angle. In order to solve this problem, we should be better to adopt the hollow belt with large radius of curvature to avoid the leaking. Besides, we could install pinch roller at the large radius of curvature point to avoid the hollow belt. The deviation of belt would result in the leaking coals. If the deviation of belt occurs, the two sides of belt would have two he

The riding wheel bush of rotary kiln has common temperature rise. The reasons of temperature rise are various. If the temperature rise could not be solved in time, the serious consequence will occur. Our company has involved in manufacturing rotary kiln for many years, successfully solving the temperature rise problem of supporting roller bush. The common reasons and treatment measure: The lubricating oil results in temperature rise of supporting roller bush. If the lubricating oil is used for a long time, viscosity of lubricating oil is reduced, which would result in the temperature rise of supporting roller bush. We should change the lubricating oil in regular time and strengthen the maintenance of supporting roller bush. The oil leak and the falling of lubricating device would result in temperature rise of supporting roller bush. If the seal of roller axle is bad, the oil leak will be serious, which would result in this problem. The treatment measure is changing seal ring. If th

The belt conveyor is a kind of continuous conveyor in fixed line. The belt conveyor could transport the materials in horizontal, inclined or vertical direction. In general, the conveying line is fixed. The capacity of conveyor is large and the conveying distance is long. At the same time, other technological operation could be done in the course of conveying materials. As a result, the application of belt conveyor is wide in most EPC companies . Besides, the confirmation on operating speed is very important for the belt conveyor design, which influences the conveying capacity and cost. Increasing the operating speed of belt conveyor could increase the conveying capacity. Under the same conveying conditions, selection of small belt width reduce the linear load and tension of conveyor belt. If the operating speed is increased, the dust would be raised. What's worse, the abrasion in feed channel and sweeper will be serious, which should be considered by designer. When the deliver

Different automated warehouse has different height, goods shelf, aisle width. The facility should be suitable for the type of warehouse. According to the height of warehouse, the automated warehouse could be classified as follows: The lower layers of automated warehouse：This kind of automated warehouse's height is under 5 meters, which is transformed from the old warehouse. This also an method to improve the technology level of automated warehouse. The middle-level of automated warehouse: This automated warehouse has height of 5-15m. This type has low requirement on the equipment of warehouse with low cost and wide application. The high-rise automated warehouse: This warehouse's height is over 15m. Because of high requirement on equipment, the installation is difficult and the application is rare. According to the structure of goods shelf, the classification is as follows: The format type automated warehouse: This kind of warehouse is widely used by clients. Each layer

Rotary kiln is widely used in the field of industrial waste treatment. It can handle solid and liquid waste. The solid waste is transported by the special transport equipment into the rotary kiln, while the liquid waste is through the efficient atomization equipment into the kiln's feeding end. With the country's increasing requirement for environmental protection, burning waste by rotary kiln has been widely used. However, in the process of incineration, the fault in any one part will cause excessive emissions of pollutants, thus affecting the environmental performance of rotary kiln. In the calcination process, the necessary details should be vigilant. First, the rotary kiln's feeding temperature and the out-feeding temperature must be controlled. Second, the carbon monoxide content and exhaust pressure in the rotary kiln must be measured at any time. Third, the rotary kiln's feeding amount should be controlled. If the amount of raw meal is less than 75% of the ma

The off tracking of belt conveyor is the common problem in the production. Especially, belt conveyor installed in inclined drift is easy to have off tracking of belt. If this problem could not be solved timely, the coal production will be limited and the equipment performance will be worse, which would reduce the service life of belt and many result in accident. If the off tracking of belt occur, we should confirm the reason and then solve it accordingly. We should deal with it according to actual conditions to guarantee the normal operation of the belt conveyor. If the upper belt has deviation in one direction and the lower belt has deviation in the other direction, this could result from the large diagonal deviation. We could adjust the frame to higher place, making upper and lower idlers bear large load. There is no off tracking with load, while off tracking occurs without load. This situation is common where it is downhill and hanging segment. At this moment, the belt is control

The stacker reclaimer is a high efficient equipment for the continuous loading and unloading of large bulk materials in modern industry. Now the stacker reclaimer has been widely used in ports, docks, metallurgy, cement, coal, steel plants, coking plants, coal storage plants, power plants, coal and other fields for handling bulk materials. There are three operating methods for the stacker reclaimer. Semi-automatic operation: Before operating the stacker reclaimer , the workers would set related parameters according to the actual conditions. The related parameters include the rotating speed of stacking boom, rotation angle of stacking boom, pitching angle of stacking boom, detecting switch signal on the conditions of stacking materials. The related parameters for reclaiming materials involve in rotating speed, rotation angle, and nutation angle of scraper reclaimer, and control settings for the switch. After completing the settings of parameters, the semi-automatic operation for stack

Most EPC companies will choose the pipe conveyor to transport the materials rather than the normal belt conveyor. The unique belt conveyor design of pipe conveyor enables the belt conveyor The pipe conveyor is the special belt conveyor developed from troughed belt conveyor. It is developed through compelling force on idler sets to the pipe form, in which the materials are sealed in the pipe. In this way, the materials could be protected in the pipe and this pipe conveyor reduces the pollution to the environment. In general, pipe conveyor coordinates with the stacker reclaimer . The pipe conveyor has the following features: (1) The pipe conveyor is similar to the normal belt conveyor. It is easier to be accepted to the most users. (2) The pipe conveyor could prevent the other things sneaking into the materials. According to its principle, the pipe conveyor could realize the sealing conveying, avoiding the materials escape in the course of transportation. (3) The pipe conveyor could

The reducer is an independent closed drive between the prime mover equipment and the working machine to reduce the speed and increase the torque meeting the working needs. In some cases, the reducer could be used to increase the speed, known as the speed changer. When choosing reducer as a part of belt conveyor design , we should choose carefully to make the whole belt conveyor to reach the best performance. The Selection of reducer should be based on the working conditions, technical parameters, power machine performance, economic and other factors of belt conveyor. The designer should  compare different types of reducer, transmission efficiency, carrying capacity, quality, price to select the most suitable reducer. The reducer is a relatively sophisticated machine. The purpose of using reducer is to reduce the speed and increase the torque. In general, reducer types include helical gear reducer (including parallel shaft helical gear reducer, worm reducer, bevel gear reducer, etc.

The automated warehouse is designed for automated storage and retrieval of parts and items in manufacturing, distribution, retail, wholesale and institutions. More and more EPC companies are seeking the development of automated warehouse. This kind of automatic storage may involves in belt conveyor, stacker reclaimer and automatic robot and etc. The trends of automated warehouse are as follows. The demands trends in the future are troops, dairy, tobacco, low-temperature food, railways, subways, manufacturing and other industries. It is expected that there will be a large demand potential for the troops, railways, subways and petroleum industries in recent years. Limited land resources force many manufacturers to use automated warehouse. At the same time, the equipment and peripherals of the automated warehouse are improved. The storage and access methods with features of automation, intelligence, high efficiency, high precision, low loss and high management level are more suitable fo

Most coal power plant deals with desulfurization waste water with depositing method. However, this would greatly influence the quality of water, resulting in the death of living beings. The new processing of desulfurization waste water would solve the above problem. Then the coal power plant could realize the purpose of protecting the water source, making a difference on protecting the environment. At present, the coal power plant has strict environmental requirement on belt conveyor and apron feeder. The basic processing of coal power plant is as follows: 1.Neutralizing the waste water The desulfurization waste water enters into the blending pond, in which the lime is added to adjust the PH of water. When adjusting the quality of waste water, the F- is removed, creating the suitable conditions to the later processing. 2. Removing the heavy metal ion The join of alkaline reagent increase the PH of waste water, and Fe3+、Zn2+、Cu2+、Ni2+、Cr3+ and other heavy metal ions form hydroxide p

The conveyor is the equipment transporting materials in a certain line, also known as continuous conveyor. The conveyor includes belt conveyor, apron feeder , screw conveyor. The belt conveyor and reclaimer could be used in automated warehouse . The belt conveyors could carry on the horizontal, inclined and vertical transporting. And the transmission lines are generally fixed. Most EPC companies would involve in these automated equipment. The belt conveyors development trends in the future are as follows: The large-scale development is one of the trends. Large-scale means large transport capacity, large single machine length and large transport tilt and other aspects. The length of the hydraulic conveyor has reached 440 km or more. The stand-alone length of belt conveyor reaches nearly 15 km. Many countries are exploring the belt conveyors with features of long-distance, large transport capacity to reach continuous delivery of materials. The expansion of belt conveyor application is