Difference between ultrasonic vibration sieve and ordinary rotary vibrating screen

Compared with rotary vibrating screen, ultrasonic vibration sieve is equipped with a ultrasonic generator, with self-cleaning function ,the mesh is not easy to block, it is no need to add bouncing balls and other anti blockage device. Ultrasonic vibrating screen is particularly suitable for screening fine powder and light weight material with mesh size larger than 300 mesh. 

 

Ultrasonic screening system is composed of ultrasonic resonant power supply, oscillator and resonance ring. The ultrasonic resonant powder supply will generate longitudinal oscillating wave which will transmit to the resonance ring to produce a resonance, and then the vibration will be transmitted to the screen mesh evenly through the resonance ring. While material on the screen mesh does three dimensional vibration movement in the low-frequency, it will overlap the ultrasonic vibration which can prevent the mesh plug and improve the screening yield and screening quality. 
The performance characteristics of ultrasonic vibrating screen: it can sieve the heavy, light, ultra-fine, strong adsorption powder (almost all of the powder is effective) that ordinary rotary vibrating screen can’t sieve. Compared with ordinary rotary vibrating screen, the material passing rate of ultrasonic vibrating screen will be increased by 50%-400%, the performance is as follows:
(1). Reduce screen mesh cleaning time;
(2). No pollution of powder that generated by bouncing ball and other auxiliary materials;
(3). Keep the screen mesh size, stable precision screening; 
(4). Reduce the material stuck on screen mesh size;
(5). Reduce screening frequency.

The Cautions of Vibrating Feeder You Should Know

The Cautions of Vibrating Feeder You Should Know

How much do you know the vibrating feeder?Vibrating feeder is a kind of continuous uniform feeding equipment.It is widely used in in metallurgy, coal mine, dressing, building materials, chemical industry, grinding, etc.Here we will introduce the vibrating feeder what you should notice a lot.

vibrating feeder

For the user,In order to prolong the service life of the machine, ensure the machine can work normally, the user should do daily maintenance and repair work regularly.The following two aspects will show you how to maintain through apply proper lubricant.

1, The machine is normally use thin oil splash lubrication, according to the use of locations, the temperature conditions, lubricating oil should be put into use reasonable, usually with gear oil

2, Ensure that the vibrator is thin oil oil is higher than the standard height (by joint bend charging), And the oil must be replaced every three to six months time, when the oil change application of clean gasoline or kerosene cleaning tank, bearing raceway and gear surface regularly

vibrating feeder

In the process of operation,  you need to pay attention to the following security technology.

1,Operators can mount guard after the security technology education

2,Consolidate all bolts, to prevent the occurrence of loose in the running process

3,If discovery is unusual, please stop immediately repair

4,Operating personnel prohibited near the machine when the machine is running, touch the body, adjust, form, such as cleaning or inspection

5,Make sure the wires machinery and equipment safety, always check the electrical wiring for wear and leakage

vibrating feeder

Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, and Vibrating screen, Bucket elevator, Screw conveyor, Scraper conveyor using the world's most advanced technology, we are willing to serve every company to meet your custom needs. our goal is "be the future global leader of mining machinery industry". have any questions, please contact us without any hesitation. 

Tel: +86 373 579 9198

Fax: +86 373 507 1699  

info@pkmachinery.com  

website:www.pkmachinery.com

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

Introduction of Conveyor Belt Water Scraper

Conveyor belt is the most commonly used material handling equipment, which is widely used in chemical, coal, iron & steel, metallurgy, mining industries, port, thermal power plant, etc. However, for conveyor belt which runs in the open air without cover hood, water scraper is a necessary accessory which is used to eliminate the stagnant water on the belt.
Water scraper mainly consists of support & frame, idler sets, axle, bearing block, connecting rod, crank, electric-hydraulic pusher, etc. The operation precondition of water scraper is conveyor belt non-loading running. In the operation, press roller, trough carrier idler, flat carrier idler, connecting rod and crank are workings as a rotary body, the electric-hydraulic pusher drives the press roller and trough carrier idlers in clockwise rotation, then the top of trough carrier idlers and flat carrier idlers are on the same tangent plane. Under the clamping pressure of press roller and carrier idlers, the belt is lifted up, and the water is discharged from both sides of the conveyor belt. Thus the shift between normal operation and water removal can be achieved through the rotation of rotary body. When the conveyor belt is in normal operation, the trough carrier idlers of water scraper are used as the part of conveyor belt, so the belt can pass through the water scraper smoothly.
This kind of water scraper has simple and reliable structure, which can avoid the belt damage. And it has the features of safe and reliable operation, long service life, easy installation and convenient maintenance. 

Brief Introduction for Vibrating Platform

► Brief Introduction
Vibrating/Shaking Platform is the device mainly used for reducing air and crannies among the material to compress the material; it is always used with silo.

►  Working Principle

Unbalance motors make the platform to oscillate. An oscillation insulating elastic suspension connects the top and bottom part of the platform. The amplitude of the oscillation can be changed by adjusting the unbalances on the unbalance motors during standstill. Besides, the vibration frequency can be changed during the operation time if an electric control with frequency inverter is being used. Both parameter have influence on the vibration intensity and allow an adaption to the different scopes. 

►  Features
1) Durable
2) Strong power
3) Stable running
4) Simple structure
5) Reduced maintenance

►  Advantage

   1.Durable

   2.Strong power

   3.Stable running

   4.Simple structure

   5.Reduced maintenance

   6.Noiseless

   7.For concrete and construction applications, it can reduce the need to trowel during pours.

   8.Reduce or eliminate the need to hand finishing to remove flaws caused by trapped air.

   9.Dramatically improve product quality and reduce defects without increasing cost.

   10.Properly fitted with the motors and other parts to ensure smooth functioning.

►  Application

Vibration platform is used for:

   1.Compaction, detachment and aeration of bulk materials

   2.Testing of welded joints in automobile industry and delicate joints in electronic industry

   3.Effective packing of fluffy and difficult to handle powder in chemical and pharmaceutical industry

   4.Proper flow of powder in dies and moulds to get perfect moulded parts

It can apply on steel, foundries, concrete, food processing, plastics, construction, chemical and bulk materials industry. 

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.

The classification of Explosion-proof Vibration Motor

1.According to the principle, explosion-proof vibration motor can be divided into explosion-proof asynchronous vibration motor, explosion-proof synchronous vibration motor and explosion-proof DC vibration motor etc.

 

2.According to the working place , explosion-proof vibration motor can be divided into coal mine use explosion-proof vibration motor and factory use explosion-proof motor.
3. According to the explosion protection principle , explosion-proof vibration motor types can be divided into the flameproof type, increased safety type, positive pressure type, no-spark type and dust & explosion-proof electrical motor, etc.

 

4.According to the matching equipment, explosion-proof vibration motor can be divided into explosion-proof motor for coal mine conveyor, coal mine winch, rock loader, coal mine fan, valve, blower, marine, lifting metallurgical hydrogenation device.

 

5.According to the nominal voltage and efficiency, explosion-proof vibration motor can be divided into high voltage type, high efficiency type, high slip ratio type and high starting torque type of explosion-proof motor.

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Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, Vibrating screen, Bucket elevator, Screw conveyor, and Scraper conveyor using the world's most advanced technology, we are willing to serve every company to meet your custom needs. our goal is "be the future global leader of mining machinery industry". have any questions, please contact us without any hesitation.

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

Official Website: http://www.pkmachinery.com/

Lubrication of Rigid Impeller Feeder

Add sufficient 00# lithium lubricating grease to reducer of rigid impeller feeder,within 6-10 months of being put into use, the transmission and bearing parts of rotary valve should be replaced and the grease also need to be changed. If rotary valve works in a high ambient temperature, humid or too much air return, please shorten the time of changing the new grease.
During operation, please check the lubrication parts every month.
Above mentioned lubrication time is just the minimum requirements, detailed time should be flexible and depends on the operation condition.

 

List of Lubrication parts
 

No.	Name of Lubrication part	Lubrication material	Lubrication part cycle	Lubrication method
1	Coupling	2# lubricating grease	1000 hours	Lubricator
2	Bearing seat	3# calcium base grease	1 month	Lubricator
3	Gearmotor	00# lithium lubricating grease	6 months	Lubricator

Vibrating feeder --Vibrating Feeder for Wooden Chips to Thailand

Vibrating Feeder makes periodically reciprocating movement along the groove direction by two vibration motors, so it can realize uniform dosing.

Vibrating Feeder is composed of feeding box, vibration motors, and vibration isolation system, etc.

Vibrating Feeder is often used with crusher, vibrating screen, belt conveyor, bucket elevator, etc.

Thank you for your watching.

Web: www.pkmachinery.com
Email: pk@pkmachinery.com
Tel: +86-373-5799198
Fax: +86-373-5071699

Six factors influences screening efficiency of vibrating screen

Vibrating screen is one most important sieving equipment in mining, metallurgical, chemical and other industries In the actual operation, many factors may influence the screening efficiency, here PK Machinery will introduce as follows:
1. crackle occurs on the steel channel of motor bracket
In the process of running, the platform vibrates strongly which will directly cause a large secondary vibration in the process of running which will make steel channel of motor bracket crack.

 

2. weight deviation of vibrator eccentric
Vibrator eccentric is to make the vibrating screen vibrate, its weight directly affects the vibrating amplitude value, if there is eccentric weight deviation, the vibration force will be scattered at running time, which is directly reflected on the screen body, and the amplitudes inconformity of each part, it will cause vibration sieve connection parts or welding joint cracking.

 

3. severe wear and deformation of outlet lining plate.
From wear condition of outlet side plate, soil and ore residue mixed and harden, during start-up and running processing, the vibrating screen vibrates and tamps constantly, soil becomes hardening and causes the soil and side plate striking.
4. crackle occurs on side plate and reinforcing rib crack, and the length is different.
Soil stuck seriously inside the outlet side plate, when vibrating screen works, soil compaction, and there will be a huge impact contact generated between vibrating screen and screen base frame. At the same time, it also seriously affects the linear motion of vibrating screen.

 

5. damping spring failure.
After using for a long time, the spring will occur permanent deformation due to the rubber aging or long-term stress which lead to the spring failure and vibrating amplitude inconformity of each part, causing the vibrating screen connection parts or welding joint cracking.
6. misalignment of eccentric plumb line and natural plumb line.
When install an exciter, after connecting the universal shaft coupling and exciter well, there will be misalignment of eccentric plumb line and natural plumb line due to the influence of the driving shaft torque which leads to eccentric rotation out of sync, and the inconformity of amplitude of vibrating screen each part, causing the vibrating screen connection parts or welding joint cracking.

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

Official Website: http://www.pkmachinery.com/

Four Advantages of Linear Vibrating Screen with an Inclined Angle

Linear vibrating screen is widely used in mining, coal, refractory, metallurgy, building materials and other industries etc. PK Machinery can customized according to the client’s requirement and site space, such as the inlet and outlet location, vibrator motor installation location and linear vibrating screen can be inclined.
1. The motor angle of inclined linear vibrating screen can be adjusted freely, you can also enlarge the vibration source to get a amplitude which can meet the requirement of material screening.
2. The linear vibrating screen with an inclined angle can increase the screening production and improve production efficiency.
3. According to different material properties, the material can be sieved quickly due to the inclined angle of linear vibrating screen, it also can reduce the damage and friction of the screen mesh which brought by material.
4. When the angle is 15 °more than parallel, material are input as obtuse angle, it will increase the service life of the screen mesh effectively.

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.

How to Solve the Noise Problem of Linear Vibrating Screen?

1.before start-up of linear vibrating screen, we should first check whether the bolts of every part are fastened properly or not, the purpose of fastening bolt is to make the parts more consolidated and reduce the unnecessary extra vibration during operation.
2. add rubber sheet on screen side plate, inlet, outlet and hopper to effectively inhibit the high frequency vibration and reduce the radiated noise. But in the actual production process of rubber ,due to heat and pressure ,it will transform or damage. So please check and replace after using a certain period of time.
3. adopt small elastic modulus ,low impact noise polyurethane sieve plate or rubber sieve plate instead of the punching steel sieve plate , rubber spring instead of steel spring.

 

4. damping treatment between inside and outside of the bearing housing, bearing roller can be made out to hollow roller or add some damping materials in the interior of the hollow roller.
5. Adopt flexible wheel disk gears instead of steel gears, which using rubber elasticity of gear wheel disk to transfer the torque, absorbing the vibration caused by engaging-in and engaging-out of the gear.

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