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显示标签为“introduction”的博文。显示所有博文

2015年10月15日星期四

The Introduction of Vibrating Feeder

► Brief introduction:
Vibrating Feeder is a kind of linear direction feeding equipment, It consists of feed spout, vibration body, vibrating motor, damping device. It can feed material for belt conveyor, vibrating conveyor, bucket elevator, vibrating screen, crusher etc.

► Working principle:The feed process of the vibrating feeder is achieved by the feed spout do line reciprocating vibration periodically which is forced by the special vibrating motor. When the vertical component of the feed spout vibration accelerated speed is bigger than the gravitational acceleration, the material will be upthrow and jumping forward along a parabolic path. Because of the continuous exciting of the vibrating motor, the feed spout will
Vibrating continuously and the material in the feed spout will jumping forward continuously, so that achieves the purpose of feeding material.
 

► Features:
   1.Smooth operation, large feeding capacity with high efficiency.
   2.Low energy consumption.
   3.Characterized by even feeding, excellent continuity and adjustable vibrating force.
   4.Eccentric block as the main source of vibration.
   5.Double screening and embodies the functions of dirt removing, screening and feeding.

► Advantage:
      Stable vibration, reliable operation and long service life;
      The excitation force and materials quantity moving in the feeder can be adjusted conveniently and easily.
      The vibrating motor, as the excitation source, has low noise, small power consumption, good adjusting performance and without material splash.
      Simple structure, reliable running, convenient installation, light weight, small size, easy maintenance, and the enclosed type can prevent dust pollution.
► Application:
      ZG Vibrating Feeder is a kind of linear direction feeding equipment, which is widely used in pharmaceutical, automotive, electronic, food processing, packaging, glass, steel, construction, recycling, plastic industry etc.
 

► Operation and Maintenance: 
      A.Problems occurring in Vibratory Feeders
Four basic malfunctions that bring attention to vibratory feeders need to be concern:
    1.Declining feed rate due to low amplitude. This will occur gradually over a period of time.
    2.A dead spot in the bowl – parts will not feed past a certain point in the bowl, even though they are moving elsewhere in the bowl.
    3.Intermittent operation. The feeder will spontaneously run at excessive amplitude or possibly no amplitude without apparent cause. Included in this category is for a feeder not to work at all.
    4.Noise from the vibrating feeder.

       B.Overhaul and Readjustment of Vibratory Feeders
   Here are the methods to solve the problems:
       1.Remove the bowl, and clean the mating surfaces between the bowl and the top casting of the base.
      These surfaces can accumulate dirt, sometimes, and other material that will make it difficult to draw the bowl tightly down on the top casting of the base. These surfaces should be flat and clean. Using emery paper or a flat file is adequate to recondition the surface.
      2.Operating on one bank of springs at a time, loosen the springs top and bottom and remove them.
      Both ends of each springs, as well as the spacers and mounting surfaces should be thoroughly cleaned with either emery paper, a wire brush or glass bead shot peened.
    3.Examine each spring for cracks and corrosion
The cracks will always occur adjacent to the hole punched in either end, on this type of spring. Sometimes these cracks are not visible to the naked eye, and a simple test is to hit the spring on something solid (dropping it on the floor). Usually this will cause the spring to break thru.
    - Any pitted springs or spaces should be replaced.
    - Reassemble the springs and spaces in the manner in which they were prior to disassembly.
    - Draw up the screw snug.
    - Do this on each remaining banks of springs.

2015年10月9日星期五

Introduction of Linear Vibrating Screen

Linear vibrating screen is classical and universal screening equipment whose trajectory is linear motion, has the advantages of low energy consumption, high screening accuracy, etc. 
Rectilinear vibration sieve is composed of screen box, vibration exciter, vibration isolation system, transmission device, supporting device, etc. 
Linear separator is used in metallurgical, chemical, pigment, ceramic, slurry, carbon powder, etc.




Thank you for your watching.

Please do not hesitate to contact us if you have any inquiries about our company or products, we are ready to serve you better.

Henan Pingyuan Mining Machinery Co., Ltd.
Address: 289 Yellow River Road, Xinxiang City, Henan Province, China. 
Tel: +86 373 579 9198
Fax: +86 373 507 1699
Email Address: info@pkmachinery.com














2015年10月7日星期三

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
running track of rotary vibrating sieve
► 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.

2015年10月5日星期一

Vibrating Screen -- Testing of Circular Vibration Screen

► Introduction 
Circular Vibrating Screen is a kind of new and highly effective vibrating screen that does circular vibrations and has multiple layers. Circular vibrating screen adopts cylinder postures eccentric block to produce strong exciting force. Its main body is connected by high strength screw bolts. A circular, elliptical vibration motion is created in order to sieve the materials efficiently. It is composed of screen box, screen mesh cloth, suspension (or support) device, underframe and motor.

► Working principleCircular vibrating screen separator uses eccentric block(YK type)/eccentric shaft(YA type) to produce strong exciting force, due to the unbalanced centrifugal force of inertia of the weights on the exciter, screen box vibrates, it can obtain different amplitudes by changing the exciter eccentric weight.

► Application
Ore circular vibrating screen is available for smelting , quarry , coal preparation, ore dressing, energy, power, chemical industry,construction material.

► Features
   1.Simple structure, easy maintenance, high production efficiency
   2.Using large clearance bearings and lubricated with thin oil, little noise and long service life
   3.Sieve beam and screen box adopts high strength bolt connection, no welding processing
   4.Small amplitude, high frequency, large dip angle structure to enable high screening efficiency and great handling capacity.
Testing of Small YK Circular Vibration Screen