Through the improvement of the trough drag conveyor, the danger of dust concentration exceeding the limit in the silo caused by opening the cover plates on both sides of the scraper head and tail to prevent blocking grain due to no cleaning hopper is eliminated. Besides, it improve the working environment, enhance the management level of production equipment. This paper mainly introduce the analysis and solution of grain leakage in trough drag conveyor.

In order to reduce the quantity of urea dust，the vibratory and rotary vibratory screens are installed，respectively，in the transportation of bulk urea．The actual operation results show that the rotary vibratory screen has the advantages of high sieving rate per unit area，low impact on equipment， low failure rate，and low labor intensity for operating personnel，the sieving rate can be 12.21％一 20.71％，considerably higher than that of the vibratory screen，but the initial investment is high.

Parameter analysis is very important for the design of compost trommel screen. According to the required capacity of compost trommel screen and the characteristics of the materials to determined the trommel diameter, trommel length, trommel structure, trommel inclination and screen mesh and the vibrating speed of the trommel. Through those parameter to achieves the best screening performance.

As a kind of livestock manure treatment method, aerobic composting has the advantages of safety, high efficiency and environment protection, and has been widely applied. The mechanization and sepacializations of its production process have been improved continuously, so the corresponding requirements of the equipment have been put forward. In this paper, a compost trommel screen machine is designed for the screening operation in composting process, which has certain practical value and theoretical significance.

the sidewall belt conveyor is the key lifting equipment connecting grain warehouse and ground. It is an important part in conveying grain. This paper mainly introduces the structure feature of sidewall belt conveyor, emphatically analyzes the structure feature and selection point of sidewall conveyor belt.

Taking the revolutionary vibratory separator in chemical industry. Fertilizer Factory as an example，the failures dung its operation was studied and summarized, and the solution and reformation method were present. This paper mainly introduce the common failures and solutions of vibratory separator.

When the screening equipment of the gum production line is in operation，there are a large number of material particles which are small enough but can’t get through the screen cloth in time. These materials will then be shattered repeatedly to make a lot of materials with particle sizes smaller than 0.038 mm，therefore the quality of the products is influenced. To solve this problem，a study of the structure and operating principle of the vibratory separator is done. A new and high-efficient vibratory separator is designed，base on the structure of ordinary vibratory separator.

In view of the high crushing rate of Z type bucket elevator in grain transportation process,The head section, tail section, slide chute and distributor are improved.After improvement, the throughput of corn increased by 13t/h, which was 34% higher than before.The added value of crushing rate decreased by 21 percentage points,It was 22% lower than before.Power consumption was reduced by 0.101kw*h/t, 26% lower than before.

This is a technical analysis about how to prevent dust during conveying coal by belt conveyor. The proposed a new type of conveyor cover architecture can be effectively carried out dust in the transport. Put forward effective methods for belt conveyor to effective dust control, also it is important to the protection of the environment.

Z type bucket elevator is suitable for conveying all kinds of powdery materials and granular materials, and it is better to transport non-sticky materials. The biggest advantage is flexible in composition, low in damage rate of materials, can prevent the generation of defective products, and is suitable for various occasions where materials need to be softly treated. This paper mainly analyzes and introduces the body form and operation specifications of the Z type bucket elevator.

Portable belt conveyor is a kind of lifting transport machinery and widely used in ports, stations, warehouses, freight yards and other industries. For ports, loading, unloading and handling of various kinds of bulk materials, bagged materials, small sundries and other materials, the use of belt conveyor as the main loading and unloading equipment, has a high efficiency of loading and unloading.However, in the actual running, the operating efficiency is not high, so these efficient loading and unloading equipment are difficult to play its efficient level.

As a kind of new practical conveying tool, the portable belt conveyor solves the technical problem of low efficiency and flexibility in the process of conveying materials. The structure of portable belt conveyor includes the frame, roller, belt, universal wheel and baffle, which is reasonable design, convenient installation and operation, flexible operation, and widely used range.

Mobile belt conveyors are also known as mobile feeders or mobile loading machines. Mobile belt conveyors are mainly used in ports, coal, warehouses, construction, gravel, farms and other industries. It is used for conveying bulk materials or bagged material weighing less than 100 kg at short-distance. This paper mainly introduces the layout difficulty and equipment advantages of the mobile belt conveyor, and looks forward to the development prospect of the mobile conveyor.

heavy duty apron feeder is used for coal, ore and other bulk material continuous supply equipment, because of its feeding capacity, long layout distance, stable performance and it can withstand the direct impact of large materials. It is widely used in ports, mines and other industries. However, due to the uncertainty of operating conditions, the phenomenon of feeding caused by sticky chain plate often occurs in the operating.

Heavy duty apron feeder is widely used in construction, coal, metallurgy, mining and other industries. The thesis mainly introduces the reasons and solutions of sprinkling between chain plates of heavy duty apron feeder.

apron feeder is a kind of large scale conveying equipment with low conveying speed, large capacity, impact-resistant. apron feeder is usually divided into three types: heavy, medium and light type. This paper mainly introduces the type of apron feeder and its working principle.

The bucket elevator equipment is widely used in the industrial field. The belt bucket elevator and the chain bucket elevator work in the same principle, but the performance, efficiency and ease of installation of the two are very different. Due to its long and narrow structure, the installation space is small, the installation cylinder and the installation height of the machine head are extremely high, the bucket elevator brings great difficulties to the construction. The belt bucket elevator is a new type of dry process cement and slag powder production line vertical conveying equipment, whi

High tower granulating compound fertilizer is one of the new technology of compound fertilizer production in our country. The steel cord belt type bucket elevator for high tower is a key equipment which urgently needs technical upgrading.The height of granulation is generally 98-118m from the tower. How to transfer less raw materials (usually 15-50 t/h) to the top of the tower with a height of about 100 m becomes a key link in the production of compound fertilizer.

Belt bucket elevator because of its characteristic advantages, which widely used in food, chemical, mining and other industries now and play an important role in the diverse production line, but in the long run as well as the high strength work, will inevitably generate some inevitable problems, the following will be according to their different problem, list the corresponding solutions.

Tumbler screen is a new screening multipurpose device, classic inertial screening, Its brand new design concept and unique structure made tumbler screens become almost perfect screening machine and have a wide range of applications. Because of the structure and working principle, that the tumbler screen is particularly suitable for the classification of fine particles and fine powder materials.This paper mainly introduces the structure working principle and developing trend of tumbler screen.

The screen surface and screen frame of the tumbler screen can be processed by various materials and different processes, and can be conveniently stacked in multiple layers. The tumbler screen is a fully enclosed structure, and there is no phenomenon of material dust overflowing, and auxiliary facilities such as drying, cooling, dust removal and cleaning can be conveniently added. This article is mainly about the introduction of the tumbler screen and its features.

The flexible connection between inlet and outlet of the swinging dry particle screen was prone to aging or damaging, causing dust leakage, environmental pollution, and an increase in production costs. The present paper provided several solutions to this problem, involving the reasonable design and installation of the sluice of the tumbler screen and a sound selection of flexible connections.

Steep inclined belt conveyor has the advantages of simple structure, reliable operation and convenient maintenance, and can realize large inclination or vertical transportation, compact structure, small footprint, so it is an ideal equipment for large inclination transportation. steep inclined belt conveyor is a kind of most of the parts the same as the ordinary belt conveyor, line layout and form a relatively stable structure, a series of components, accounting for a large proportion of the general parts, so it can be based on the general belt conveyor series of 3D model of the parts and impr

The structural feature of the steep incline belt conveyor is to replace the ordinary conveyor belt with a corrugated sidewall belt. Its working principle and structural composition are similar to those of belt conveyors. Therefore, components such as driving device, tensioning device, intermediate frame, intermediate leg, tailstock, drive roller, reversing roller, idler, discharge funnel, air cleaner, protection device, etc. The corresponding parts of the conveyor are universal.

Steep inclined belt conveyor is a kind of conveying machine developing on the basis of ordinary belt conveyor. In order to realize the material transportation under the condition of large angle and long distance, so as to give full play the function of transportation equipment. However, there will be material falling phenomenon in the process of transportation. In this case, we designed several protective measures to eliminate accident risks.