1. Screening material-material shape/moisture content
In actual production, most of the screening materials are cylindrical materials or irregular particles. Although the rotary vibrating screen can clean the screen and solve the problem of network blockage, it belongs to some materials with irregular shapes and water content. Large, the screen will still be blocked during the screening process, which will affect the screening efficiency.

Solution: ① When the humidity of the material is high, the method of increasing the sieve hole can generally be adopted, or the wet screening can be adopted. ②Materials with large water content (when the water content is greater than 8%) should be wet screened or cleaned in advance. ③If the previous two methods are not feasible, you can choose to install an ultrasonic transducer on the rotating vibrating screen, that is, selecting an ultrasonic vibrating screen for screening.

2. Screen specifications-screen area, inclination and screen hole shape
The larger the effective area of the screen surface, the more area the screen pores occupies, the easier it is for materials to pass through the sieve holes, and the higher the screening efficiency.
If the installation inclination angle of the rotary vibrating screen is too small, it will cause materials to accumulate on the screen surface, which is also not conducive to screening. Improper selection of sieve holes will also result in low screening efficiency of the rotary vibrating screen.

Solution: The installation angle of the rotary vibrating screen should be adjusted at any time according to the requirements for the quality of the screening product. The shape of the sieve hole of the rotary vibrating screen should be selected according to the particle size of the material and the requirements for the use of the product under the screen. Generally, for cylindrical particles, rectangular sieve holes have better passing performance; for irregular particles with little difference in size in all directions, round holes have better passing performance.

3. Improper manual operation: uneven feeding-to ensure the normal work of the screen surface
Solution: The rotary vibrating screen should be fed evenly and continuously, and the material should be spread into a suitable uniform thickness along the entire width of the screen surface, which not only makes full use of the screen surface, but also facilitates the passage of fine particles through the screen holes, so it can ensure a higher Productivity and screening efficiency.

First, Different screening materials: The rotary vibrating screen can screen powder, granule, and slurry-like materials, while the direct discharge screen is mainly for powder materials (such as flour, starch, milk powder, additives, etc.).

Second, the working principle is different:
1. The working principle of the rotary vibrating screen: this series of screen machines use a vertical vibrating motor as the vibration source, and the weights (unbalanced weights) installed at the upper and lower ends convert the motion of the motor into a horizontal, vertical, and inclined three-dimensional motion , And then transfer this movement to the mesh surface. Changing the phase angle of the upper and lower weights of the motor can change the direction of movement of the raw material;
2. The working principle of the direct row screen: This series of screen machines use horizontal vibration motors on both sides as the excitation source. The vibration motor is placed on one side of the machine body. Motion trajectory. While the screen is completed quickly and reciprocally, the vibration force can continuously peel, break up and reorganize the material, so that the material can quickly pass through the network, and the material that cannot pass the network is screened according to the movement trajectory of the equipment. The upper discharge port is discharged to complete the screening process.

Third, the output is different: Compared with the three-dimensional rotary vibrating screen, the output of the direct-discharge vibrating screen will be larger, which is about 4 times that of the rotary vibrating screen. This is due to the open design of the inlet and outlet of the straight-line screen, so the output is relatively large;

Fourth, the screening accuracy is different: the direct-row sieve is mainly for the screening of flour and powdery materials, and the highest mesh number of flour-type powder materials is 140 meshes, so the highest sieve mesh number of the direct-row sieve is 140 meshes; and three times Due to the installation of the screen cleaning device, the element rotary vibrating screen can screen materials below 500 meshes at the highest.

Finally, the editor continues to emphasize: Whether it is a rotary vibrating screen or a straight row screen, they have their own characteristics and application areas. Therefore, when ordering screening equipment, we should describe in detail the mesh size, characteristics, output requirements, production environment, etc. of the materials to be screened, so that the vibrating screen manufacturer can recommend reasonable models.

Please provide some details: 1. Your material; 2. Mesh size; 3. Capacity per hour; 4. Material proportion.

The blocking phenomenon of linear vibrating screen is an important problem that various screening equipment manufacturers are committed to researching and solving. During the screening process, the blocking of the screen not only seriously affects the screening effect and efficiency, but also wears the screen to a large extent and reduces the screen. The service life of this product will not only cause inconvenience to users, but also increase unnecessary costs. If you want to solve the blockage of the direct-discharge vibrating screen, you must first know what are the reasons for the blockage of the vibrating screen?
Based on years of experience in vibrating screen production and manufacturing, there are two main reasons for the blockage of the screen, one is the various characteristics of the material itself, and the other is the structure of the vibrating screen.
After analysis, it is found that the reason for the blockage of the straight-line vibrating screen is mainly due to the large amount of fine-grained materials in the screened materials. The size of these fine particles is relatively close to the size of the screen hole, and it is easy to get stuck on the screen hole and cause blockage; The material is also relatively moist, and the wet fine particles will stick to each other and adhere to the screen surface, making the screening process difficult to complete. It is more difficult to change the properties of materials, so the solution to the clogging problem should mainly start with the structure of the vibrating screen and the structure of the screen.

1. No need to add lubricating oil, no rotating parts;
2. The vibrating screen has simple structure, convenient maintenance, long service life, and greatly reduced failure rate;
3. The vibrating screen vibrator uses the principle of resonance, the double mass body works in critical resonance state, the required driving power is small, there is no large starting current when starting, and the noise is low;
4. After the vibrating screen vibrator is started, the amplitude can reach the stable working value instantaneously. When it is stopped, its amplitude will disappear instantly, and it is allowed to start and stop directly under the rated voltage, current and amplitude.
5. Both the excitation and amplitude of the vibrating screen can be adjusted, and the particle size of the product under the screen can be controlled by changing the excitation force of the screen.
6. While vibrating the sieve body, the sieve bars of the sieves will also vibrate relative to each other, so that the gaps between the sieves are not easy to be blocked.

When the shaftless screw conveyor conveys sludge and other materials with a certain viscosity, the sludge basically contains some other types of debris and stone-like stones. If you use a common type of screw conveyor, it is easy to damage the spiral blades. Or debris is wound on the spiral shaft, which affects the later use of the equipment.
The inclination angle of the screw conveyor has an impact on the productivity and power consumption of the screw conveyor. The conveying capacity of the screw conveyor will rapidly decrease with the increase of the inclination angle. At the same time, the inclination angle of the screw conveyor will also affect the material. The conveying effect.
The maximum inclination angle of the shaftless screw conveyor is 30°. What is the conveying volume per hour (that is, how many cubic meters are conveyed per hour, depending on the specific gravity of the material, what is the effective conveying length you need to provide (the distance from the discharge port to the feed port or special space requirements), tilt What is the angle?