Steep angle conveyor is a new type of belt conveyor, which is mainly used in coal, chemical industry, electric power, metallurgy, light industry, building materials, port and bulk grain conveying industries. In the early 1960s, the equipment was first developed by a german company. Subsequently, its technology patents were used by manufacturers in the united kingdom, japan, northern europe and other countries. In the late 1960s, this technology was introduced to the united states and canada. In the 1970s, the equipment was promoted and applied all over the world, and its superiority attracted the attention of all countries in the world. In 1980s, the introduction of china began, and the first steep angle conveyor developed by our country at the end of 1985 passed its technical identification. In 1987, the national patent was obtained, and small batch production began. In the 1990s, china developed a d] wave belt conveyor series drawings and sample selection, the equipment entered a stage of rapid development, began to promote application in various industries in the country, and was gradually accepted by the majority of users. In 1998, china formulated the industry standard of "Wave-shaped belt conveyor" (Gb/t8908 1999).
After entering the year 2000, the equipment has developed rapidly with mature technology and unique advantages, and has formed a scientific research, serialization and mass production scale in china. Manufacturers from the original known as the development of dozens of today. At present, more than 10,000 sets of steep angle conveyor have been produced and applied in china. Our company already has the design and production technology of steep angle conveyor, and there are real cases of exporting it to indonesia, singapore, vietnam and other countries.
1 Layout form
There are 5 kinds of basic layout of steep angle conveyor, and on this basis, a variety of new layout forms are gradually improved and developed.
1.1 The tail receiving point of the basic arrangement type i and inverted l is in the inclined section, and the angle should not exceed 40°, otherwise, the tail is easy to spill when receiving material. The head discharge point of type i and l is in the inclined section, and the head is easy to sprinkle. The tail receiving point and the head discharging point of other arrangement forms have a horizontal section transition that is not easy to sprinkle. It is better to arrange the s and z shapes. Z-type arrangement covers less land, the middle vertical section can be without support, the whole machine is easy to seal, this arrangement can best reflect the advantages of large angle transportation, but the volume is relatively reduced. In the case of the same specification, the inclination angle is closer to the vertical, the smaller the volume. The closer the inclination is to the horizontal, the greater the volume. When the inclination is 18° and below, the ordinary belt conveyor should be used, otherwise it will cause unnecessary waste.
1.2 the new type of layout is the steep angle conveyor set in the mobile car, the general specification is small, can be pushed by manual short distance or vehicle long haul, easy to move, flexible, mainly used in bulk grain storage and transportation system.
When conveying materials vertically, the vertical section can be rotated 180° to achieve receiving and discharging within 360°, and the layout is very flexible. The double-belt type is used to close the vertical section of the conveyor belt bearing materials to the outside of the vertical section when the belt conveyor with the wavy rib is vertically arranged, which can not only increase the conveying capacity, but also avoid material scattering. In the rear recharging type, a recharging conveyor is set under the horizontal section of the tail of the belt conveyor on the wavy rib, and a small amount of material scattered from the tail is transported back to the main machine. On the basis of the tail type, a return conveyor is added under the horizontal section of the head of the belt conveyor on the wavy retaining edge, and a small amount of material scattered from the head is transported back to the head funnel of the main engine. 2.1 Features
(1).Steep angle conveyor has the advantages of advanced technology, simple structure, stable operation, safe and reliable use, less equipment parts, less maintenance, low noise, flexible layout and many other advantages. It is suitable for the working temperature of -15~40℃ working environment, conveying bulk density of 0.5~3.9t/m of various materials.
(1). The machine can be arbitrarily arranged in the angle range of 0°~90°. When conveying materials vertically, it can also rotate 180° left and right to achieve receiving and discharging within 360°.
(3) Because the machine can transport materials with a large angle, when it reaches the same conveying height, the length of the whole machine is greatly shortened, and the length of the corridor arranged with the machine is correspondingly reduced, reducing the equipment investment and engineering cost, and reducing the floor area.
(4). The machine has a large inclination angle and a short length. Compared with the ordinary belt conveyor, it can greatly reduce the number of rollers, conveyor belt length and material weight, that is, greatly reduce the roller resistance and the power consumed by the conveyor belt and materials. Therefore, the machine can reduce energy consumption. (5) when the machine is vertically arranged, it is generally fully enclosed, with good sealing, less dust and remarkable environmental protection effect.
(6) The transverse rigidity of the conveyor belt is strong, both sides of the base belt have vertical rollers to prevent deviation, and the materials being transported are basically in the center of the conveyor belt. Therefore, the conveyor belt does not run off during operation.
(7).The machine has more flexible layout, which brings great convenience to the design work, especially in the old factory renovation project, it is easier to solve some conveying problems.
Along with the continuous growth of our economy and the gradual understanding of steep angle conveyor, it has been widely used in every industry in our country. With the continuous improvement of technical quality, the production is increasing year by year. It has a very fast development speed. It saves the country a lot of money, energy and land. However, the machine in our country is still very young, started just more than 20 years, has just laid a solid foundation. Compared with foreign advanced countries, there is still a big gap in technical quality and large-scale, there is still a lot of work to be done in the future, there are many follow-up products to be developed, and now steep angle conveyor will have a leap in development and a qualitative development. Complete large-scale, high-speed equipment development and serialization, standardization, mass work, and develop a variety of related products. Domestic steep angle conveyor will be more widely used and developed at home and abroad.