How to Adjust the Excitation Force of Vibration Feeder?

Due to the errors of previous parameters that clients offer and the material granularity and processing capacity per hour of actual production, clients can adjust the motor excitation force according to the following description in order to change the capacity vibration feeder.
The shaft for each end of vibration motor has a fixed eccentric block and an adjustable eccentric block, you can adjust excitation force by adjusting the angle between fixed eccentric block and adjustable eccentric block according to the needs,see table 1 and table 2.

Table1:

Table 2:

Adjustable eccentric block rotation angle	0°	60°	90°	120°
excited force	F	0.866F	0.707F	0.5F

Please switch off the power before adjusting the excitation force of the vibration motor. Remember, when adjusting the excitation force, the two vibration motor eccentric block position should stay the same , in case of imbalance phenomenon,and causing damage to vibration feeder. So generally it needs 10 mins to adjust the excitation force, after that you can switch on the vibration motor and adjust the eccentric block angle.

The Introduction of rotary vibrating screen

► Introduction and working principle：Rotary vibrating screen is designed as a high-precision screening machinery. Round vibrating sieve is composed of vertical motor,and eccentric weight installed at two ends.We can produce horizontal, vertical, inclined motions by adjusting the upper and lower eccentric weight.Diameter can be ranged from 400mm to 2000mm, with single or multiple screening decks.

► Working Principle：

XZ Rotary Vibrating Screen is a vertical-motor system, with eccentric hammers being installed on top and bottom of the machine, where the motor acts as the vibratory source. The direction of the eccentric hammers may change its rotational mode either in horizontal, vertical and inclined movement onto the sieving screener surface. The trajectories of the materials on the sieving machine can be change by adjusting the phase angle on both top and bottom parts.

Running Track of Rotary Vibrating Screen

► Application :
    Powder rotary vibrating screen is widely used in many kind of industries
    Food industry: sugar, salt, alkali, glucose powder, monosodium glutamate, soy milk, yeast, wheat starch, wheat flour, rice flour, skimmed milk powder, fruit juice, dehydrated vegetables, thick, pineapple juice, soy sauce, corn starch.
    Chemical industry: pigment, medicine powder, oil, rubber, plastic, epoxy resin, PVC resin, polyethylene powder, vinyl chloride resin, aggregate grains,cosmetics.
    Ceramic industry: glass powder, refractory material, silica sand, spray soil particles, mud, grinding materials, nano brick materials, artificial graphite, kaolin, lime hydrate, mica, aluminum oxide, calcium carbonate Oxygen, diamond powder
    Metallurgy mining industry: lead oxide, zinc powder, aluminum powder, iron powder.
Pollution treatment: waste water, waste oil, pig dried urine, dyeing wastewater.
Other industries: carbon black, pearl powder, light calcium, additive, etc..

► Features
-Layers can be up to five layers
-Fully enclosed design,continuous operation,small volume and low noise
-Self-cleaning device(bouncing balls),avoiding blockage, mesh size can reach to 500 mesh ( 0.028 mm)
-High precision, high efficiency, powder, granule and mucus are applicable

► Advantage :

1. Low energy consumption, low noise, 
2. High screening accuracy, large capacity, simple structure. 
3. Fully enclosed structure, good sealing, prevent dust spillover, automatic discharge, more suitable for assembly line work. 
4. Screen body parts are used copper plate and section welded together (part group between body for bolt connection) overall stiffness is good, strong and reliable. 
5. Unique design of screen structure, convenient and quickly to change screen (only 3 to 5 minutes); And her mother screen fully supporting the fine screen, so fine screen can be long life, so as to reduce the consumables cost of the fine screen; In addition this design allows to using all kinds of screen (nylon, special dragon, PP network).  

► Selection condition :

To choose the most suitable machine for you ,please provide us more detail information as the followings:

1．Material: 

  -Material name:_____

  -Feeding size:_____mm

  -Material density:_____t/m3

  -Material distribution:_____%

  -Separation destination:_____

2．Screen machine

  -Capacity:_____t/h

  -Screen deck: _____ 

3．Particle size distribution of each layer:  

  -Opening size:_____mm

  -Construction material:_____

A lot customers only knows the micron term and don’t know the meaning of mesh when purchasing a rotary vibrating screen. In fact, the conversion of micron into mesh is simple. Let’s PK Machinery explain the specific conversion method. 

At first, let’s us briefly understand what is mesh definition. The mesh refers to the number of inches of screen holes per square. 50 holes per square inch refer to the 50 mesh. The bigger the number of mesh means the more holes per square inch. Besides, it also used to express the screen mesh particle size. The higher the number of mesh means the smaller the particle size. 

The powder particle size is known as particle size. The granularity means particles can pass through the screen mesh size with 1 inch (25.4 mm) the number of mesh width of the screen mesh representation is known as mesh. There is no unified standard size of powder technology in the world. Each enterprise has its granularity index definition and representation. Different country has different screen size. Hence, it is difficult to be standardized.

What is the Applicable Material for Drum Screen

Drum screen is a kind of cylinder revolving screening machinery that relies on gravity, its working principle is different with rotary vibrating sieve, linear vibrating screen, drum screen can generate strong exciting force, so if dealing with the proportion of lighter materials, it is not suitable for drum screen, the screen is easy to get blocked due to the irregular shape material, and the most important is the screening effect is bad, so what is the applicable material for drum screen?

 

Drum screen also is often used in mining, sand ,gravel industries, common screen mesh size can be larger than 5 mm, the smallest mesh size should larger than 3 mm, if the mesh size is smaller that is the wire mesh is small ,the service life will be shorter, besides, the drum screen doesn’t do a good job for on sieving fine material and the sieving efficiency is not very good.

 

Except for sandstone, drum screen is also more commonly used for granular material screening, such as: chemical fertilizer, ceramsite and so on. The sieving efficiency is good and easy to handle large-scale capacity.