The use of Rotary Vibrating Screen
Screw conveyor is a kind of continuous conveying equipment without flexible traction components, mainly used to transport powder or granular materials.
Screw conveyor simple structure, small cross section size, low manufacturing cost, good tightness, safe and easy to operate, and easy to change the feeding and unloading position. The disadvantage is that the material is easy to be broken and destroyed in the conveying process, the conveyor parts wear faster, the power consumption is large, the conveying length is smaller (< 40m), the conveying capacity is lower, and the inclination Angle is less than 20° when the inclined conveying.
First, structure and working principle
Screw conveyor is mainly composed of chute, conveying screw and driving device. When the captain is long, the middle suspension bearing should be added. The spiral blade is fixedly arranged on the shaft, and the spiral shaft is longitudinally arranged in the feed groove. Each shaft has a certain length, and the connection between the sections is equipped with hanging bearings. Generally, the screw shaft of the head section is connected with the driving device, the discharge port is located at the bottom of the groove of the head section, and the feed port is located on the cover of the tail section. The material is loaded by the feed port, when the electric motor drives the spiral shaft rolling, the material because of its weight and the role of friction between the groove wall, do not rotate with the spiral, so that the axial driving force generated by the rotation of the spiral shaft directly acts on the material, so that the material slides along the axis. Conveying material is like being held and can not rotate the nut along the screw for translation, in one direction to the discharge port discharge.
1- Drive device; 2- discharge port; 3- spiral axis; 4- intermediate bearing; 5- shell; 6- Feed port
Screw conveyor screw is divided into solid screw, belt screw and blade screw three kinds.
Solid spiral structure simple, high efficiency, suitable for conveying loose, dry, non-viscous materials. Belt screw processing is more troublesome, low strength, mainly used for wear and erosion strong and particle size of the conveying of materials. Blade screw machining is troublesome and low efficiency. It is mainly used for mixing and mixing in the process of material conveying.
(a) Solid spiral; (b) belt screw; (c) blade spiral
Two, the determination of the main parameters
1. Conveying capacity
Non-metallic mineral processing machinery and equipment
In formula
D -- helix diameter (m);
s -- pitch (m), full-blade screw s = 0.8D, belt screw s = D;
n -- spiral speed (r/min);
φ -- material filling coefficient, see Table 9-23;
Ps -- Material packing density, see Table 9-23;
C -- correction coefficient of conveyor tilt.
2. Spiral speed
Screw speed is too low, the throughput is not big; If the speed is too high, the material has been thrown up by the tangential force, the conveying capacity is reduced, and the wear is increased. Therefore, the rotational speed of the spiral shaft cannot exceed a certain limit. The ultimate speed of the spiral shaft can be calculated by the following empirical formula:
Non-metallic mineral processing machinery and equipment
Where KL is the comprehensive characteristic coefficient of materials;
The speed calculated by the above formula should be rounded into the following speed: 20, 30, 35, 45, 60, 75, 90, 120, 150, 190r/min.
3. Spiral diameter
Given the throughput and material characteristics, the spiral diameter can be obtained by means of Equation 9-28:
Non-metallic mineral processing machinery and equipment
Where, K is the empirical coefficient of comprehensive characteristics of materials.
If the conveying material lumpiness is large, the spiral diameter should be checked according to the following formula:
For the screened material D≥ (4 ~ 6) dmax;
For screening the material D≡ (8 ~ 12) dmax.
Where, dmax is the maximum diameter of the material to be transported.
The spiral diameter obtained above should be rounded into the following dimensions: 150, 200, 250, 300, 400, 500, 600mm.
Step 4: Power
The power required by screw conveyor is used to overcome the following resistance: material to the groove and screw friction resistance; When inclined conveying, the resistance of material promotion; Mixing of materials and the resistance of the department to be broken; Transmission resistance, etc. Among the above resistance, in addition to the resistance of conveying and promoting materials can be calculated accurately, the other resistance is difficult to calculate accurately item by item. It is generally believed that the power consumption of the screw conveyor is proportional to the throughput and length of the conveyor, and all losses are classified into a total coefficient, namely the resistance coefficient ζ. Therefore, the power required by the screw shaft can be calculated as follows:
Non-metallic mineral processing machinery and equipment
Where Q is the conveying capacity of the conveyor (t/h);
ζ -- resistance coefficient of material,
L -- length of conveyor (m).
In the formula, take the "+" sign when conveying upward; Take the "-" sign when conveying downward. The power required by the motor is:
Non-metallic mineral processing machinery and equipment
Where, K -- power reserve coefficient, generally 1.2 ~ 1.4;
η -- the total transmission efficiency, generally 0.9 ~ 0.94.
Applicable industries
Chemical industry: resin powder, pigment, washing powder, micro powder, paint, soda ash, lemon powder, rubber, plastic, etc.
Abrasives, ceramic industry: alumina, quartz sand, mud, sprayed soil particles, etc.
Food industry: sugar, salt, alkali, monosodium glutamate, milk powder, soy milk, yeast, fruit juice, soy sauce, vinegar, etc.
Paper industry: coating paint, clay mud, black and white liquid, waste liquid, papermaking liquid, wastewater recycling, etc.
Metallurgical industry: titanium oxide, zinc oxide, electromagnetic materials, metal powder, electrode powder, etc.
Pharmaceutical industry: Chinese medicine powder, Chinese medicine liquid, Western medicine powder, Western medicine liquid, Chinese and Western medicine granules, etc.
Environmental protection: garbage, human and animal excrement, and urine, waste oil, food wastewater, wastewater processing, etc.
Production process
Production workshop
Packaging & Shipping
After you place the order and pay the deposit, we will start to arrange the production and contact the ocean freight transportation agency to reserve the position. Two days before the end of production, you need to complete the final payment. Then, we inform the ocean cargo transportation agent company that it is ready to come to the factory to pull the goods to the port. On the day of delivery, we will send the customer the factory video and pictures, and mark the corresponding English name of each product and product parts with a marker to prevent the customer from not knowing what each part is after receiving the goods. At the same time, we will put the English version of the product instructions in the cargo box. We generally select freight forwarders with preferential prices for customers to deliver goods for you. The shipping method can be FOB or CIF. You can also choose EXW, and then contact the goods agent company yourself.
Customer visit
Company Profile
Xinxiang Tianfeng Vibrating Machinery Co., Ltd. (formerly Xinxiang Tianfeng Vibrating Machinery Factory) is a comprehensive enterprise specializing in the research, development, manufacturing, and sales of mechanical equipment such as vibrating screen, separation, crushing, and conveying for more than 30 years. The company mainly produces Vibrating screens, ultrasonic vibrating screens, test screens, oscillating screens, linear screens, airflow screens, feeders, bucket elevators, conveying equipment, and other mechanical equipment. This equipment features stable and reliable operation, simple operation, convenient maintenance, low noise, low energy consumption, large output, and high precision; The screen mesh has the advantages of no blockage, no flying powder, no liquid leakage, etc. The products are widely used in food, medicine, chemical industry, metallurgy, abrasives, plastics, glass, paint, pollution control, and other industries, with high efficiency, large processing capacity, long service life, and other characteristics.
Our company has taken the lead in passing ISO9001 quality system certification, CE certification, and SGS certification, and was awarded Henan High tech Enterprise in 2022.
We can provide customized products, services, and solutions to meet the needs of customers in different industries, and have established long-term partnerships with customers from Southeast Asia, the Middle East, Africa, South America, Oceania, and other countries.
The company is located in Xinxiang City, Henan Province, China. It is only an hour and a half drive from Xinzheng International Airport. We provide free shuttle service. We sincerely invite foreign friends to visit our company and have face-to-face exchanges to jointly promote development.
FAQ
1. Who are we?
Our headquarters is located in Henan, China, and our factory was established in 2002. At present, there are more than 100 workers, technical engineers, foreign trade sales personnel, and administrative personnel. The factory covers an area of more than 2000 square kilometers and is mainly engaged in vibrating screening and conveying and feeding equipment.
2. How do we guarantee quality?
Always provide pre-production samples before mass production; Always carry out a final inspection before shipment.
3. What can you buy from us?
You can purchase a vibrating screen, roller screens, rotary screens, vacuum conveyors, mixer, and customized vibrating machinery and conveying equipment in our factory.
4. What are our strengths?
As one of the old enterprises in the screening industry, Tianfeng has provided a large number of screening equipment and systems at home and abroad. Mass production, rapid delivery, stable quality, affordable price, and excellent after-sales service have become the symbols of Tianfeng.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW, CIP, FCA, CPT, DDP, express;
Accepted payment currency: USD, EUR, RMB;
Type of payment accepted: telegraphic transfer, letter of credit, express remittance, credit card, PayPal, Western Union remittance, cash, custody;
Oral: English, Chinese, French.
6. What information do we need to help you choose a perfect machine?
-Name and characteristics of raw materials.
-Purpose of use: remove impurities, filter, and grade.
-Processing capacity: kg/h, L/h.
-Raw material size: (mesh or mm).
-How many floors do you need?
-Voltage, frequency, phase (single-phase or three-phase) Note: You'd better send us the relevant pictures or materials you want to filter, which can ensure that we recommend the appropriate machine for you.
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