(1) Linear vibrating screen This equipment is a kind of biaxial inertial vibrating screen. Its movement track is straight, the screen surface is horizontally installed, the height is small, the amplitude is large, the screen surface is large, and the production capacity is high. It is suitable for medium and fine grain materials. Screening can also be used for dewatering, desliming and de-intermediation. Such shaker adapted ore, coal and non-metallic material is dehydrated, sculping, desliming and dry, wet classification, which slit screen bar is 0.5 to 12 mm, a mesh size of coining ф13 ~ 80 mm, braided mesh The hole is 3 to 80 mm. The screen has high strength, fatigue resistance, long service life, stable operation, low noise and convenient maintenance. Where S'—the screen area of ​​each dewatering screen, m 2 .[next] Where S———the required sieve area, m 2 ; Where b———the width of the screen surface, the width of the chute, m. For a curved arc with a radius of 0.5 to 0.6 m, the production capacity can be approximated as follows: Spare Parts For Other Tobacco Machines Spare Parts For Other Tobacco Machines Customized Tobacco Machine Spare Parts,Wearing Parts For Customized Tobacco Machines,Customized Replacement Parts For Cigarette Making Machines,Customized Replacement Parts For Cigarette Packing Machines Zhengtong Special Material Factory Hi&New Tech Zone Chengdu , https://www.ztferre.com
Anshan Mining Machinery Co., Ltd. cooperates with American RS Company to produce ZKX linear vibrating screen and YA round vibrating screen. There are 62 kinds of specifications in two series. ZKX (formerly TH) linear vibrating screen has 22 kinds of specifications, and its structure is shown in Figure 1. 
(2) Resonant sieve This kind of sieve is a screening equipment that works in the near resonance state, which has the advantages of large output; high screening efficiency; small required excitation force; low power consumption, about other vibrating screens. 1/5～1/10; the transmission mechanism is simple and the force is small, the screen surface can be correspondingly larger; the amplitude stability is good; the work is stable, the dynamic load is small; it can be used for screening various materials, and can also be used for dehydration, Desliming, de-intermediation and screening of medium and fine-grained materials.
The production capacity of the dewatering screen is generally calculated based on the productivity of the unit sieve surface. When the material density increases, the production capacity per unit area of ​​the sieve increases accordingly.
The total area of ​​dewatering screen required is:
(3) Fixed slit screen
The screen surface of the fixed slit screen is made of wedge-shaped stainless steel wire with a slit width of 0.5-0.75 mm. It is commonly used for the preliminary dewatering of clean coal. It is generally installed at the bottom of a section of the transport chute, instead of the bottom plate of the chute, its width and The chute is the same, the length is about 3 to 5 meters, or longer to improve the dewatering efficiency. The inclination angle of the sieve surface is the same as that of the chute, generally about 5-8°. In order to facilitate the transportation of the dehydrated material, it is usually installed at the end of the chute, or the inclination angle of the chute after the sieve surface is increased to 35-40°.
The size of the dewatering screen should be determined according to the following principles:
W——— the amount of water that should be excreted, m 3 /h;
q———The amount of water that can be drained per unit sieve surface, m 3 /(m 2 · h); when the slit width is 0.75～1mm, q=300 can be selected; when the seam is 0.5mm, q=200.
Sieve length
(4) The curved screen is generally used for screening and dewatering fine coal of less than 10 mm, and can also be used for de-intermediation of heavy medium mineral processing products. The device is simple in structure and light in weight; small in size and small in floor space; no moving parts and transmission mechanism itself; large production capacity; but high water content in the sieve product, fast wear when using pressurized feeding; It must be a certain pressure.
Practice has shown that the size of the curved sieve mesh is about 1.5 to 2 times that of the sieved product. The type of curved screen can be divided into five types according to the screen curvature: 45°, 60°, 90°, 180° and 270°. Among them, the materials used in the concentrating plant and the coal preparation plant are classified, delimed and dewatered. It is a 45°, 60° and 90° screen surface; it can be divided into two types according to the feeding method: pressureless (self-flow) and pressure type feeding. The pressure feed is used on a large arc-shaped screen surface of 180° or 270°. The slurry is sprayed through a flat nozzle onto the screen surface. The pressure is about 10 to 20 kPa (1 to 2 kg/cm 2 ) to increase the slurry speed (generally above 10 m/sec), resulting in high screening efficiency. The curved screen structure is shown in Figure 2.
Q=C · A 0 · υ (5)
Where Q—the flow rate of the slurry, m3/h;
A 0 ———effective area, m 2 ; take 0.3 to 0.4 times of the actual sieve surface;
Υ—the speed of the slurry at the feed end, m/s;
C———coefficient, generally 160-200.
The relationship between the graded size of the curved sieve and the size of the mesh is shown in Fig. 3.
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