Jining Yanzhou District Dongtai Machinery Co., Ltd.

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Introduction to the guide trough
, structure and installation location of the guide trough
No matter what type of guide trough, its structure is similar. Its main structures are cover plate, side plate, The ancillary structures of the front and rear baffles include anti-spill skirts, anti-spill skirt clip structures, entrance doors, observation doors, etc. The guide trough is installed at the rear of the belt conveyor at a certain distance along the belt running direction. The rear part is connected to the coal drop pipe. There are coal baffles at the front and rear of the guide trough. The front and rear baffles, side plates and upper cover form a cover. over the hood and belt.
The role of the guide chute
We have already known before that when the material on the upper level belt falls to the next level belt, the impact force is very large. If there is no equipment to block the material, the coal flow will flow everywhere. Spread out, wasting fuel, and if there is not a closed space for dust collection at the next level of the belt, the coal dust will permeate the entire coal conveying bridge, seriously affecting the environment. Therefore, the guide chute plays two roles: one is to prevent coal from spreading and save fuel; the other is to seal in coal dust and protect the environment.
. Precautions for selecting guide troughs
Certain principles must be followed during the selection process of guide troughs. The basic principle is to ensure the normal operation of the belt conveyor, especially not to affect the normal start-up of the belt conveyor. , Secondly, we must consider the influence of factors such as the sealing of the guide trough and the deviation of the belt conveyor.
Characteristics of the three types of guide trough
Lower-end type guide trough
The lower-end type guide trough is relatively simple to make and install. The cross-sectional area of the guide trough is wide at the top and narrow at the bottom. isosceles trapezoid. This kind of guide chute has advantages and disadvantages. Its advantages and disadvantages are explained below:
The lower opening of the lower closing guide trough is relatively small, and the lower opening of the side plate is far away from the edge of the belt (usually C). Therefore, this type of guide trough affects the allowable running of the belt conveyor. The deviation amount is large, even if C's heavy deviation occurs, it will not cause coal scattering. Because the lower opening is small, this type of guide trough has the function of collecting coal amount. The coal flow gathering in the middle of the belt can also relieve the belt. deviation.
This type of guide trough has advantages but also disadvantages. The relatively small lower opening makes the anti-overflow skirt plate have more contact with the coal flow. The more contact, the more serious the wear, and the frequency of replacement of the anti-overflow skirt plate will increase. (Generally replaced once every two months), which is a serious waste of manpower. At the same time, the side plates of the feed trough are more in contact with the coal flow. The side plates of the feed trough must be made of wear-resistant plates, and the cost is relatively high.
Lower opening guide trough
The lower opening guide trough is designed based on the experience of the lower closing guide trough. Its advantages and disadvantages are exactly opposite to those of the lower closing opening.
The lower opening of the lower-opening guide trough is larger, and the lower opening of the side plate is closer to the edge of the belt (usually C). Therefore, this type of guide trough has a smaller allowable deviation of the belt conveyor. Once it occurs, A slight misalignment of C may cause coal scattering, and a heavy misalignment will cause coal scattering to be more serious. Also, because of its large opening, this type of guide chute cannot collect the coal flow and cannot alleviate the misalignment.
The advantages of this type of guide trough are officially aimed at the shortcomings of the lower-end type guide trough. The anti-overflow skirt and side plates of this type of guide trough generally do not come into contact with the coal flow, have less wear, and prevent The replacement frequency of the overflow skirt plate is low, which saves maintenance workload. At the same time, the side plates of the guide trough can be made of ordinary steel plates, saving production costs.
Fully sealed guide trough
Whether it is the lower opening or the lower closing opening, the coal dust sealing relies on the contact between the anti-overflow skirt and the belt to seal the coal dust. There will inevitably be a gap between the anti-overflow skirt and the belt. , the gap will be larger when the belt is not running smoothly, so the sealing effect is the same, and powder leakage from the guide trough is unavoidable. In order to solve the problem of powder leakage between the anti-overflow skirt and the belt, we can design the guide trough in the form of wrapping the belt, which is a fully enclosed guide trough.
The fully enclosed feed trough is a new type of feed trough. Its design is mainly to solve the problem of powder leakage in the feed trough. The side plates of this feed trough are installed on the lower part of the belt. In this way, the coal The flow and belt are completely wrapped inside the guide trough, and the sealing effect is incomparable to the first two. Although the fully sealed feed trough has its absolute advantages in controlling the problem of powder leakage, the fully sealed feed trough also has its shortcomings. First of all, the side plate of the fully enclosed guide trough is close to the edge of the belt conveyor, so the amount of deviation allowed by the belt is small. Once the belt deviates, serious friction will occur between the side plate of the guide trough and the belt. The side plate may be damaged and replaced. If the side plate is severe, the belt will be torn longitudinally, especially the belt at the lower part of the tee, which is easy to deviate due to the direction of coal falling. In addition, the fully sealed guide trough lowering the belt is sandwiched between the sliding plate and the anti-overflow skirt. The sealing effect is increased and the resistance of the belt running is also increased. The longer the guide trough, the greater the resistance, especially when the belt is started under heavy load. During the process, the belt often fails to start, and the belt has to be started after removing the coal, which is a waste of manpower.
Application and selection considerations of three types of guide trough
Fully sealed guide trough
All kinds of guide troughs can meet the basic functions of the guide trough, that is, to prevent coal spreading and lower the Dust concentration, the fully enclosed guide trough has its unique advantages in reducing dust concentration, so we give priority to the fully enclosed guide trough when selecting the guide trough. Based on the shortcomings of fully sealed guide troughs, we can conclude that there are two situations where fully sealed guide troughs should not be used:
1. The belt is prone to deviation, especially the belt at the lower part of the tee. Adopt fully sealed guide trough. Because the direction of coal falling under the tee is generally not in the same vertical horizontal plane as the running direction of the belt, the coal flow will give the belt a lateral impact force, causing the belt to deviate. However, the fully enclosed guide chute is more likely to cause an accident if it deviates. big.
2. When the guide trough is too long, especially when the belt is too long and installed with an elevation angle, it is not appropriate to use a fully enclosed guide trough. Because accidental shutdown of the belt conveyor is inevitable, sometimes in order to prevent the accident from expanding, the belt may be stopped artificially. Once the machine is shut down, it will face the problem of restarting. The fully sealed guide trough increases the starting resistance. The longer the guide trough, the greater the starting resistance. The more the increase, the more difficult it is to start. Therefore, it is not suitable to use a fully closed guide trough when the guide trough is too long
The bottom closing type guide trough
The guide trough prevents coal from spreading. Considering that it is not suitable to use a fully enclosed guide trough, we give priority to the lower-end guide trough. We all know that the main reason for belt coal spreading is the deviation of the belt, and the lower closing guide chute has the advantages of allowing a large amount of belt deviation and mitigating the belt deviation, so we next consider the lower closing guide chute.
Lower opening type guide trough
We all know that the lower opening type guide trough and the lower opening type guide trough have the advantages of low maintenance and low cost. Therefore, it is not suitable to use fully enclosed guide troughs. In this case, we can also use part of the lower opening type guide trough. Since this type of guide trough allows a small amount of deviation of the belt and cannot alleviate the deviation of the belt, this type of guide trough can only be used in places where the guide trough is long and the belt is not prone to deviation.
Conclusion
Although these three types of guide troughs cannot represent all types of guide troughs, their installation structures are all representative. Although the site conditions are different, we can still learn from various types of guides. Advantages, disadvantages and selection considerations to determine the most suitable type. With the development of technology, new guide troughs will be born, but as long as the conveying system exists, how to select the appropriate guide trough based on site conditions will be a technical problem.
There are many manufacturers of guide troughs, but the quality is also divided into good and bad. Do you want to use good quality? Then come to Yanzhou Dongtai Machinery! There are many types of guide troughs here, and the quality is quite good. Friends who want to buy guide troughs, don’t go around asking about the quality and price. Dongtai has everything, and the price is the lowest for you. We rely on our own efforts to Today's achievements are all due to the trust of our customers in us. We will definitely live up to the trust of our customers in us. Why can I say so confidently? Because Dongtai has a group of dedicated designers and technicians who have devoted themselves to the company, as well as meticulous front-line workers. They always put the company's interests first, and customer satisfaction is the biggest wish of Dongtai people. The majority of guide trough users, what are you still hesitating about? Call Dongtai’s consultation hotline as soon as possible. If you have any questions, we will solve them for you as soon as possible. Shandong Dongtai Machinery welcomes on-site inspections and strives to be the leading professional production and sales company in China! Dongtai Machinery is a company that specializes in the production of mining products. The products we produce can be described as "high, big, and superior". We are not bragging about our products. Users can come to the factory to visit and inspect to see what our Dongtai is really like. Strength, let’s see if Dongtai’s products are worth owning! ! ! !
Shandong Dongtai Co., Ltd. was established in 2001. For more than ten years, the company has been adhering to the quality policy of "quality first, customer first, high-quality products, and excellent service" and has been deeply trusted by the majority of users.
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