Rotary Vibrating Screen

Description

►Customer reference list

CUSTOMER REFERENCE LIST (YEAR 2012-2014)
NO.	EQUIPMENT	VENDOR'S SCOPE OF SUPPLY	QUANTITY	TIME
		PROJECT LOCATION
11	Rotary Vibrating Screen	Namibia	6 Sets	20121000
18	Rotary Vibrating Screen	Britain	2 Sets	20130316
24	Rotary Vibrating Screen	Philippines	1 Set	20130624
32	Rotary Vibrating Screen	Russia	1 Set	20132014
34	Rotary Vibrating Screen	Iran	3 Sets	20140129
41	Rotary Vibrating Screen	Venezuela	1 Set	20140500
45	Rotary Vibrating Screen	Philippines	1 Set	20140817
46	Rotary Vibrating Screen	Britain	1 Set	20140926
51	Rotary Vibrating Screen	Cyprus	1 Set	20150112
52	Rotary Vibrating Screen	Australia	1 Set	20150220
57	Ultrasonic Vibrating Screen	Norway	1 Set	20150420

► 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.

Fixed Belt Conveyor

Description

►Brief Introduction
Fixed Belt Conveyor is a friction drive conveyor transported materials continuously. Belt conveyor machine comprises the rack, conveyor belt, pulley, rollers, tensioning devices, driving unit and other components. It not only conveys material, but also can cooperate with various industrial equipments to form a rhythmic transport line.

►Features
1) Long distance
2) Easy maintenance
3) Steady operation
4) Convenient loading and unloading
5) Wide applications

►Advantage

The advantages of belt conveyor are 

   1.Large conveying capacity

   2.Long conveying distance

   3.Low horsepower compared with other types of conveyor

   4.Low cost of operating and maintenance

   5.Stable performance and reliable operation

   6.High universality and easy maintenance

   7.Labour saving

   8.No product degradation during conveying process

   9.Conveyor can have changes in elevation (horizontal, inclined or combination)

   10.Weight belt section can be added for continuous product weighing

   11.Belt conveyors can pivot at one end allowing the discharge to be moved over an arc (radial stacking).

►Working PrinciplesBelt conveyor is composed by two endpoint pulleys and a closed conveyor belt.  The pulley that drives conveyor belt rotating is called drive pulley or transmission drum; the other one–only used to change conveyor belt movement direction–is called bend pulley. Drive pulley is driven by the motor through reducer, and conveyor belt dragging relies on the friction drag between the drive pulley and the conveyor belt. The drive pulleys are generally installed at the discharge end in order to increase traction and be easy to drag. Material is fed on the feed-side and landed on the rotating conveyor belt, then rely on the conveyor belt friction to be delivered to discharge end.

►Application
Long distance belt conveyor can transport bulk materials or bagged goods, such as stone, sand, coal, concrete, cement, gravel, fertilizer, mineral ore, limestone, coke, sawdust, wood chip, bulk material, grain, corn flakes, carbon black, component/part, etc.

►Components of Belt Conveyor

Main components of a belt conveyor are:

   1.Belt is used for moving and supporting surface on which the conveyed material rides. It is the tractive element. The type of belt used need to depend on the nature of materials to be transported. 

   2.Idlers are the supports for the carrying and return stands of the belt.

   3.Drive that imparts power to one or more pulleys to move the belt and its loads.

   4.Structure is the support and maintains the alignments of the idlers and pulleys. Besides, it also supports the driving machinery. 

Other components included: 

   5.Loading chute or feeder chute that organizes the flow of material and directs it on the belt conveyor.

   6.Take-up device which is used to maintain the proper tension of the belt for effective power transmission.

   7.Belt cleaner that keeps the belt free from materials sticking to the belt.

   Tramp removal device, which is optionally used in case the conveyed material bears the chance of having tramp iron mixed with it and subsequent handling of the material, demands its removal. 

   8.Continuous weighing device for constantly measuring the load being carried by the conveyor belt.

   9.Discharge chutes to guide the discharged projectile to subsequent conveyor or other receiving point.

   10.Surge hopper and feeder, which is essential for supplying material to the conveyor at uniform rate when the supply of material is intermittent.

 

   11.Tripper arrangement to discharge material at different point or to other device.


 

►Selection condition

1. What is the conveying material and its physical characteristics? such as bulk density, feeding size, temperature, mositure content etc.

2. What is the processing capacity of the belt conveyor?

3. What is the conveying length of the belt conveyor?

Maintenance Tips of Conveyor Belt

In the use and storage of conveyor belt, it should kept clean, avoid direct sunlight or exposed to rain and snow, prevent contact with acid, alkaline, oil, organic solvent and other substances, and also located at least one meter away from heating device. The temperature of the storage should maintained at between 18-40 ℃ , the relative humidity should maintained between 50-80℃.In the storage period, conveyor belt should be placed in rolls, but not folding; in the placement, it should turn-over once in every seasons. Different types and standards layers number of conveyor belt should not be connected together while used, the best connection is used the bonded process. Type, structure, standard, number of layers for conveyor belt should be used according to the reasonable choice.

 

Conveyor belt operating speed generally not more than 2.5 m/s. For large lump size, material with large abrasiveness and fixed unloading device should use low velocity. The relationship between driving pulleydiameter and coating layer of conveyor belt, supporting of driving and bend pulley and also requirement for trough angle of idler roller should according to the design specification of conveyor belt, reasonable selection. Direction of feeding should along the operating direction of the conveyor belt, use chute in order to minimize the impact of material fall on receiving belt, reduce material’s free fall distance. The feeding section of conveyor belt should shortened the spacing of idler and use absorber idler as discharge section. The belt should use striker plate with moderately soft, to avoid the rigid striker plate will scrape the belt surface of conveyor belt.

Horizontal scraper chain conveyor

Description

►Customer reference list

CUSTOMER REFERENCE LIST (YEAR 2012-2014)
NO.	EQUIPMENT	VENDOR'S SCOPE OF SUPPLY	QUANTITY	TIME
		PROJECT LOCATION
8	Scraper Conveyor	Ukraine	1 Set	20120829
16	Scraper Conveyor	Russia	4 Sets	20121119
23	Scraper Conveyor	Russia	12 Sets	20130516
55	Scraper Conveyor	Pakistan	2 Sets	20150220

► Brief Introduction:
Horizontal scraper chain conveyor is bulk material conveying equipment, which consists of head section with driving device, connect section, tail section, tension device, as well as scraper and chains.By means of moving chains, it can continuously transport the materials in closed rectangular casing horizontally or at a slight incline.
MS buried scraper conveyor is widely used in cement plant, coal, metallurgy, mining, light, construction, chemical, grain, power industries etc.

► Working principle :
When scraper chain conveyor transports horizontally, the pressure which comes from chains in conveying direction to the materials, and the action which comes from the materials themselves cause internal friction. This friction ensures the stable situation between material layers, and it can overcome external frictional resistance which caused by moving materials in the trough and make materials transport as a whole fluid.

► Features:
1.Totally enclosed structure, light weight, small volume;
2.Convenient installation and maintenance;
3.Horizontal or slightly inclined transport from 0° to 30°
4.Multiple material feeding point and discharging point;
5.Conveying distance is up to 80m with material temperature lower than 120℃
6.Widely used in cement plant, coal, metallurgy, mining, light, construction, chemical, grain, power industries etc.

► Advantages :

    1.Totally enclosed structure, light weight, small volume

    2.Convenient installation and maintenance

    3.Horizontal or slightly inclined transport from 0˚ to 30˚

    4.Multiple material feeding point and discharging point

    5.Conveying distance is up to 80m with material temperature lower than 120˚C

► Applications :

MS buried scraper conveyor is widely used in cement plant, coal, metallurgy, mining, light, construction, chemical, grain, power industries etc.

► Selection condition :

    1. Material need to be processed_____?

    2. Feeding size____mm, bulk density____t/m3, material temperature_____degree ?

    3. Processing capacity____t/h ?

    4. Conveying length(distance between inlet and outlet)_____m?

    5. Inclination angle of conveyor______degree?

Useful tips of selective purchasing and storing conveyor belt

Selective purchasing
1.Describe the name and characteristics of specific materials accurately, specially the particle size, temperature and if acid ,alkali resistance or special requirement. For instance, illustrate the temperature used for the heat resistance conveyor belt.
2.Describe the specific application areas, requirement specification (width, length, number of piles, thickness, etc.), especially the temperature used and convey capacity of heat resistance conveyor belt.
Storing
1.In the process of conveyor belt transport and storage , it should keep clean and keep it from direct sunlight ,rain and snow, prevent it from contacting with acid, alkaline, oil, organic solvent and other substances, and also locate it at least one meter away from heating device.
2.The temperature of the storage should be maintained between 18-40 ℃ , the relative humidity should be maintained between 50-80℃.
3. In the period of storage, conveyor belt should be placed in rolls instead of folding and it should be turned over once every season.

 

Portable Belt Conveyor

 Description

►Customer reference list

CUSTOMER REFERENCE LIST (YEAR 2012-2014)
NO.	EQUIPMENT	VENDOR'S SCOPE OF SUPPLY
		PROJECT LOCATION	QUANTITY	TIME
20	Portable Belt Conveyor	Zambia	4 Sets	20130508
28	Portable Belt Conveyor	Ethiopia	6 Sets	20131100
56	Portable Belt Conveyor	Senegal	7 Sets	20150402

►Brief Introduction      DY Portable belt conveyor is lightweight continuous conveying equipment which has the features of high efficiency, good mobility, and convenient usage.
Movable belt conveyor is divided into rise-and-fall and non rise-and-fall conveyors.

      It is a kind of machinery that can transfer the material continuously by friction drive.

      According to different transport requirements, the transport system can be single belt conveyor or consist of several conveyors or be combined with other conveying equipments.

      It can be installed horizontally or aslant to meet the needs of different production lines. 

►Features
    1.Lightweight
    2.Two-way transporting
    3.Easy operation
    4.Widely used
    5.Easily  move

►Advantages 

    1.High precision, high loading capacity with hard mask gear(2 to 3 times more than soft mask gear)

    2.Long service life ( reach 10 years)

    3.Compact construction and small floor space (reduce above 50%)

    4.Light weight and small volume (reduce 50%)

    5.Specially vertical driving construction, more used in mining delivery machinery under coal mine well. 

►Working PrincipleMobile belt conveyor with hopper is divided into rise-and-fall and non rise-and-fall conveyors. High quality movable belt conveyor is driven by electric pulley, rising &falling and running of whole machine are all nonmobile. universal wheel is mounted below device, makes the conveyor a flexible motion. the transport height can be adjusted to meet different operation demand. 
►Application
Mobile belt conveyor is mostly applied to port, jetty, mining, warehouse, and construction site for moving bagged cargo and bulk materials.

►Selection guidelines

    1.If you want to order our products, please answer to these questions carefully. So that we can better to help you to chose the matching model.

    2.What's the material will you transported, bag material or bulk material?

    3.If bag material, please tell us the weight of every bag, If bulk material, please tell us the capacity?

    4.What's the length and the lifting height do you required?

 

Four Methods to Solve Uneven Rotating Speed of Bucket Elevator Problem

1. Base frame blockage
The reason is feeding prior to start-up, the bucket belt lacks of tension which will cause belt skid, or the inflow rate of feeding is greater than the conveying capacity (including excessive of feeding back), as well as bulk materials enter into the base frame. The methods to eliminate the problem is to shut down the machine at once, close the feeding chute, open the base frame gate plate , clear the clogged material, and start up the machine in accordance with procedures. And also adjust the tension device in order to strengthen the clean up speed of anterior materials.
2. Conveying capacity reduces
The reason is due to the skid of the drive belt or lifting belt, insufficient rotating speed of electrical motor, uneven feeding, serious feeding back, unreasonable selection of bucket design. The methods to eliminate the problem is to adjust the tension device, check electrical motor, eliminate the fault, feed evenly, identify the cause for promptly discharge of material, and select bucket design reasonably.

3. Excessive of material returning back
The reason is the linear speed of belt elevator too fast or too slow, improper design or size of drive head, material discharging in the outlet is not smooth. The methods to eliminate the problem is to adjust the rotating speed of bearing, modify the external dimensions of drive head or adjust the drip plate at the bucket gap, and unblock the outlet.
4. Casing wears seriously and large power consumption
The reason is the installation of bearing tilts, dust deposition on bearing, poor lubrication, bearing failure or elevator belt is too tight, excessive of material returning back, blockage of base frame. The methods to eliminate the problem is to readjust, clean or change the lubricating oil, replace the bearing and adjust it properly. Identify the cause for promptly discharge of material, and clear the clogged materials.