Function of Comb Roller

 Comb roller is also named comb sweep roller,it not only has a good leakproofness，but also has many omnibus characteristic，such as wear resistance,fatigue durability,corrosion resistance,ageing resistance,tear resistance,buffer performance,good elasticity,etc.It is usually installed on the return segment,the structure of comb roller is more complex than ordinary roller,as shown in the following drawings,there are some quantity of rubber rings on the roller surface,to avoid the direct contact between roller and belt,so it makes a good protection for rollers,in addition,the maintenance cost of comb roller is much lower,once roller wears,only need to change the rubber rings.
The comb roller also can protect the belt,during conveying,some material will spatter on the return belt inner surface,if don’t clear them in time, they will wear the roller and belt,even cause the belt deviation,however,comb will solve this trouble,because there are intervals between rubber rings,the material which spattered will fall into the intervals,they will not wear the belt,and because of the comb roller structure,the material will be cleaned up.

Ultrasonic Vibrating Screen Used for Battery Powder Industry Separation

Battery powder is a battery containing magnetic metals such as lead, nickel, lithium and magnet properties of non-metallic materials. During the treatment of the entire process , vibrating screen plays an important role, we often choose ultrasonic vibrating screen because the separation material belongs to powder material.
Compared with ordinary rotary vibrating screen , ultrasonic vibrating screen is equipped with an extra ultrasonic system, which allow the ultra fine powder can accept the huge acceleration of ultrasound, it can solve adhesion, friction and blockage in the screening of ultra fine powder when using the common rotary vibrating screen and improve the screening efficiency and net cleaning efficiency.
Security is very important in screening because these materials are presented with a certain degree of magnetism and electrical conductivity, these items belong to the secondary water lighted objects,besides as material is slender and easy to float in the air, under the influence of moisture in the air,it will produce hydrogen, which is flammable once it is in the fire,the instantaneous explosion will occur,thus the ultrasonic vibrating system requires a explosion-proof motor.
Ultrasonic Vibrating Screen,Battery Powder Industry,Separation

FEEDING MATERIAL IN PROPER ORDER OF BURIED SCRAPER CONVEYOR

Equipment failure happens when improper operation made in the running process of buried chain scraper conveyor. Please pay attention to the the material feeding sequence.

During material conveying, turning on the device at the first place and opening feed inlet afterwards. In this case, scraper conveyor would not be filled with material avoiding unnecessary losses because of overload motor. When material conveying finished, turn off the slide damperor or the power of the discharger firstly, stop material feeding and turnoff squeegee machine after clean up the material in the conveyor chamber. It will prevent the material accumulation in the equipment avoiding material moisture and agglomeration.

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Bucket Elevator with Explosion Safety Protection Device

Frankly speaking, it’s really necessary to install safety protection device on bucket elevator so as to ensure normal operation. Now, what is the significant inspection standard for equipment quality is that to minimize or completely eliminate all kinds of risks. According to structure of bucket elevator, there are many kinds of safety protection device. We can divide into the following protection devices based on their function: explosion safety protection device, running deviation safety protection device, overload, speed measurement and reversion protection device.
Here we will mainly introduce the explosion safety protection device. Because working components of bucket elevator and material running speed are relatively fast, also they are running in the sealing casing, if there are many dusts in materials, it will cause high dust contained. In the grain industry, materials always contain many flammable organic dusts, once dust content is too high, it maybe blast when meeting open-flame. Therefore, both design and application of bucket elevator must consider the explosion precaution.
Main measure: Please leave a dust mouth above the bucket elevator head drive. When conveying materials which will cause dust explosion, at this time please open the dust mouth, install dust collector and reduce dust concentration to make it have no necessary explosion conditions.

Type and Feature of Belt Conveyor Tension Device

Tension Device is one of the core compositions in the belt conveyor, mainly used to supply certain tension force for the normal operation of the conveyor belt. Therefore, selecting proper tension device is the key to design belt conveyor. There are three types of tension device, in the following the feature of these three device would be introduced.

1. Screw-type tension device

The screw type tension device is installed at the tailing pulley of the belt conveyor and adjust the tension of the conveyor belt through regulating the screw to make it move.

It is generally applied in the belt conveyor with belt length less than 60 meters and small power. The series of belt conveyor tension device including 500mm and 800mm there stow kind.

2. Vehicle-type tension device

The vehicle-type tension device means installing the tail pulley on the movable vehicle, and use the steel rope to connect the vehicle and heavy hammer separately through the revising pulley, this automatically tension the conveyor belt by the gravity of the heavy hammer.

3. Vertical hammer type tension device

The vertical hammer type tension device is installed between the transmission pulley and the tailing pulley, and should be close to the site with least tension. It reacts quickly when the belt conveyor starts working with good tension effect. 

For more information, please visit http://www.pkbeltconveyor.com.

How to Check Short Circuit in Winding of the Bucket Elevator

The bucket elevator has the advantage of large conveying capacity, high lifting height and long service time. Many of us would wondering why short circuit in winding happens in the operation, this passage introduces the methods for checking the short circuit in winding in the following:

1. Check the electrical bridge;

Measure the direct-current resistance of winding. The general phase difference should not exceed 5%, if it exceeds, we can confirm that the phase with small electrical resistance has short trouble.

2. Power the elevator and do experiment;

Measure the current by ammeter, short trouble exists where there is high current.

3. Observe the surface of the bucket elevator;

Observe whether there is burn at the connecting box and the winding overhang.

4. Check the temperature of the bucket elevator;

Operate the elevator without load for 20 minutes(power it off immediately if there is any abnormal phenomenon), and touch each part of the winding part to see if the temperature is higher than the normal temperature.

5. Check by the millimeter or the Meg-ohmmeter;

Measure the insulation resistance between two any phase, if it is very low or shows no resistance, then it means there is short trouble here.

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The Use Skill of Corrugated Sidewall Belt Conveyor

Corrugated sidewall belt conveyor is widely used in material handling industry. It has a lot of advantage, higher transportation capacity, the material is not easy to leak, slide prevention etc, it is welcomed by the masses of customers. So what are the use skill of corrugated sidewall belt conveyor in the process of using ?Here, Henan Pingyuan Mining Machinery Co., Ltd answers for you.
1.It is strictly prohibited to use different belt together.
2.The transport direction of the material and the dropping speed of material should be consistent with belt conveyor.
3.Non-load machine start, in order to avoid motor overload and large angle conveyor belt skid, before shutdown, all material should be unloaded completely.
4.When using corrugated sidewall belt, you should prevent belt folding and hard objects pressing, it should be curly using and preservation.
5.Corrugated sidewall belt tension should not be too big, please guarantee that it is used under the minimum tension.
6.In the using of corrugated sidewall belt, if there is a sliding or pulling up phenomenon, you should timely troubleshooting, adjust the tension system, keep the elastic device is flexible.
7.If there is belt deviation or sinusoidal running , you should adjust it timely.

THE PRICE OF VIBRATING SCREEN IN XINXIANG

With the rapid development of economy, vibrating screen equipment has already took the place of manual screening. There are lots of questions when it comes to buy a set of vibrating screen for the first time. Generally speaking, the price is what we care about primarily and it can’t not simply determined by its quality. There are other issues we must take into consideration when buying the oscillating screen.

1. Price Fluctuation of Raw Materials: the raw materials of shaking screen is steel plate, steel prices’ fluctuation take an effect of the whole machinery. Thus, the selection of different raw materials will bring to different cost. This is the reason why the the same type of vibrating screens have different price.
2. Technology: the processing technology of the vibrating screen takes an crucial part of its quality. Keep the manufacture technology from the parts processing to the overall design under strict supervision would guarantee screening classification efficiency.
3. Material: vibrating screen can be made into two different types with carbon steel and stainless steel with the latter cost is relatively high.
4. Model: the model of vibrating screen is usually divided on the basis of its diameter and the length of cylinder. There are two different categories , light and heavy vibrating screener. Each sieve machine has been made both from different raw materials and technology. This is why the same type of vibrating screeners have different price.

Henan Pingyuan Mining Machinery Co., Ltd reminds you warmly that vibrating screen selection must in accordance with your present situation. Don’t be confused by the so-called vibrating sieve price.

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The Pulley Diameter Analysis of the Belt Conveyor

n the designing of belt conveyor, the correct selection of pulley diameter is of great significance. The conveying belt use conditions improve with the increase of the pulley diameter. However, with the same other conditions, increasing the pulley diameter will correspondingly increase its weight, the transmission ratio,amount and size of the reducer. Therefore, the pulley diameter should not be too small to ensure delivery with normal operating conditions. Thus, traditional pulley diameter directly affects the whole cost and weighting the driving device of the conveyor belt.

In the selection of the pulley diameter, the factors below are generally considered:

1. The thickness of the conveying belt and the bending stress related to the thickness when it enlaces the pulley.
2. The total stress that the conveyor belt bears, including the pulling stress and the bending stress.
3. The maximum or average unit stress between the conveyor belt and the pulley surface.
4. The circle times that the conveyor belt bears bending load, the enlacing methods and number of its rolling the pulley.
5. The type of the conveyor belt and installation site.

For more information, please visit http://www.pkbeltconveyor.com.

PK Vibrating Screen Applied in Silicon Carbide Industry.

There are 4 kinds application fields for silicon carbide, which are functional ceramics, high grade refractory material, abrasive material and metallurgical material. The different particle size silicon carbide will be used in different kinds of application field,thus it need different models of vibrating screen.
Silicon carbide powder vibrating screen
For powder silicon carbide vibrating screen separating, it needs ultrasonic vibrating screen. The ultrasonic screen machine is based on normal rotary vibrating screen, adding a ultrasonic generator on screen mesh. The ultrasonic generator emanates mechanical wave, driving the screen mesh do three dimensional movement and ultrasonic vibration as well. The combination of the two movement trajectory can solve many screening problems, such as fine material with high precision, high electrostatic, high adsorptiion, large density, little specific gravity etc. Property, which can greatly improve screening efficiency.
Impurity screening in silicon carbide screening industry
The vibrating screen can achieve separating the silicon carbide into different particle size powder, granulate SIC. One set vibrating screen can includes 4 layers screen mesh, which can separate out 2~5 kinds range end products, besides, these different range particle sizes are very near. The vibrating screen can quickly separate out and clear up the impurity, continuously deslagging.
In a word, when different silicon carbide particle sizes are required,we can suggest suitable vibrating screenaccordingly, rotary vibrating screen, ultrasonic rotary vibrating screen and gyratory vibrating screen for fine screening; linear vibrating screen and circular vibrating screen for large particle size silicon carbide screening.

How to Select Model of Belt Conveyor

Belt conveyor is a continuous material delivering machinery by rubbing the drive with its main constitute including the frame, conveying belt, pulley, roller, the tightness adjusting device and the gearing device. It can deliver the

material from the primary feeding port to the ending discharging port.

Several aspects listed below are what we should pay attention to in the selection of thebelt conveyor.

1. Weight of the conveying material, external;
2. Dimensions, and handing method;
3. The length of the conveying line and its complex degree;
4. The working condition of belt conveyor and its work shift;
5. the running speed and productivity of the belt conveyor;
6. Special technological requirements.

1. 

For more information, please visit http://www.pkbeltconveyor.com.

THE APPLICATION OF VIBRATING SCREEN IN FOOD INDUSTRY

Vibrating screen is a highly efficient screening machinery used in food industry. It’s mainly used for high precision fine powder and other materials with its advantage of easy operation and fully enclosed structure.

It is also suitable for granular, powder, mucus and other materials screening and filtering classification，Such as powdered sugar, starch, salt, rice flour, milk powder, milk, egg, soy sauce, vinegar, fruit juice, papaya powder, green tea powder, kudzu powder, and potato processing production. Materials mentioned above are used frequently in daily life, vibrating screen will be our best assistant.

Take Starch or rice powder for example, In the first step, we usually remove the impurity of raw materials followed by screening and weighing; The next step includes soaking, coarse grinding, germ separation, fine grinding, screening of starch, protein separation, centrifugal dewatering and thermostatic drying, The last step includes weighing and product packing.

During these steps, we will have great difficulty in processing the food without the screening of vibrating screen. Vibrating screen has the superiority in easily screening fine material, and therefore bring us the food diversification and help to develop the entire food industry rapidly.

How to Solve Mesh Plugging Problem in the Process of Resin Screening

There may occur mesh plugging when customer sieve resin by rotary vibrating screen after using for a period of time,even the screen is fitted with bouncing balls and perforated plates. Here our engineer gives the following suggestion:
1. The motor power is relatively large,you can increase the amplitude of the eccentric block assembly weight , then it can reduce the mesh plugging(The larger amplitude is, the lower blocking probability it will be).
2. The mesh cleaning device of natural rubber material needs to replace to silicone, the bouncing performance will be much better,which can reduce the mesh plugging effectively.
Please contact 0086-373-5799198 freely if you have any problems of vibrating screen.

International Vibration Machinery Equipment & Technology Exhibition will be Held in Shanghai

International vibration machinery equipment and technology exhibition (VE-2016) will be grand held from March 16th to March 18th, 2016 at Shanghai Everbright Exhibition Center, China. VE-2016 is co-sponsored by CCPIT (China Council for the Promotion of International Trade), VESC (Vibration Engineering Society of China) and Xinxiang vibration equipment industry association, also supported by other vibrating machinery association. This exhibition is the only grand meeting in the world in vibrating machinery industry. There will introduce the most latest products and technology about vibrating machinery both domestic and overseas. At the appointed time, there will be more than 30 countries attending this exhibition, covering seven continents’ countries, including developed and developing country, such as USA, Canada, Italy, Russia, India, etc.
With the development of global economy, vibrating machinery makes a rapid advancement and is widely used in food industry, building materials, coal, powder metallurgy, ceramics, etc. PK Machinery has expertise in manufacturing and exporting vibrating screen for many years with rich experience. Any interest or information, please visit www.pkmachinery.com

True Or False Vibrating Screen

With the rapid growth of economy, vibrating screener market is becoming more and more important, meanwhile, more vibrating screen manufactures emerge as the times require. The products’ quality are uneven of different manufactures. Vibrating screener with superior quality is perfect in workmanship, plate standard and no welding seam blind angle welding seam, etc. There are some of merchants sell seconds at best quality prices who sacrifice customers’ interests for their own benefits.

As far as vibrating screen is concerned, it mainly consists of carbon steel, stainless steel 304 and stainless steel 316L. The carbon steel vibrating screen is appropriate for non-corrosive materials, while stainless steel 304 is commonly used in chemical, food, pharmaceutical industry, etc. The stainless steel 316L is applied in special industry which required for high standard with high cost.

Vibrating screen can be judged through the texture of screen machine. The surface of 304 stainless steel is smooth, toughness, high plasticity, and mechanical strength. But the vibrating screen with poor quality presents unqualified welding, easy oxidation, and thus cut down the overall quality. Therefore, the users must choose formal manufacturers through careful identification .

In addition, Users are supposed to get ready for the products inspection selecting products with high quality, safety performance, and great strength. Taking the price of the products into consideration. After all, “Different quality ,different price.” Never chose the inferior products for cheap price.

Brief Introduction of Belt conveyor Sweeper Type

Belt conveyor sweeper is one important part of belt conveyor, there are totally three types of belt conveyor sweeper: carbide belt conveyor sweeper, H type alloy rubber belt conveyor cleaner, P type alloy rubber belt conveyor cleaner.

1.Carbide belt conveyor sweeper

The Carbide belt conveyor sweeper is installed at the head pulley with the texture of scraper adopting carbide alloy. There are generally two types of it: single piece belt conveyor sweeper and double pieces belt conveyor sweeper. It realizes thoroughly material cleaning by changing the pressure beard by the conveying belt from the scraper through adjusting the balancing weight.

2.H type alloy rubber belt conveyor cleaner

It is installed at the head place of the pulley close to the conveying belt, principally applying the rubber elasticity. Meanwhile, the scraper texture is changed to Carbide scraper from rubber. It is placed close to the surface of the conveyor belt after the separation of the material with the conveyor belt.

3.P type alloy rubber belt conveyor cleaner

It is also installed at the head place of the pulley with the installation site similar to that of the spring sweeper. Besides, it shares the sweeping principle with the H type alloy rubber cleanser.

For more information, please visit http://www.pkbeltconveyor.com.

The Requirement of Linear Vibrating Screen in Pharmaceutical Industry

As we all know, pharmaceutical industry has strict requirement for hygiene of various equipment,so we must choose stainless steel 304 or 316 for linear vibrating screen. The contact material part can not appear stain and impurities ,the rubber accessories must reach medicine food hygiene standards as well.
In fact, the linear vibrating screen structure is simple, the so-called standard refers to construction material, it must be 304 stainless steel, and must be the pharmaceutical grade in the selection of sealing, linear vibrating screen needs to be washed carefully for several times by alcohol, and it needs polishing treatment to keep it clean and smooth.

Do you Know About the Installation and Adjustment of the Pull Cord Switch on the Belt Conveyor?

Do you know about the installation and adjustment of the Pull Cord Switch on the belt conveyor?
Pull Cord Switch is commonly known as "emergency stop switch". When the belt conveyor need downtime, Pull Cord switch action will stop the conveyor. Pull Cord Switch can be divided into manual reset and automatic reset. Automatic reset: after action, it can automatically return to the initial position, may lead to error start. Manual reset: after action, the self-locking device can maintain the operating position, it need to manually reset handle to make its return to the initial position.
Pull Cord Switch should be installed on both sides of the conveyor where has a maintenance channel, installation position should ensure that the maintenance person operates conveniently in the event of an emergency.
1.Pull Cord Switch is fixed on the rack.
2.The distance of the two switches on one side is about 50 m, the two switches are connected by the diameter 4mm of wirerope, elastic should be moderate.
3.To reduce the influence of the weight of wire rope on switches, we install supporting ring on the frame every 3 m to support the steel wire rope.
4.The other end of the rope is in tension spring (with rope buckle), In a way not affecting the normal use, using tightener to pull the rope tension on both sides, and to ensure that tension is balanced on both sides.
(Note: The climbing section of the conveyor, should try to shorten the Switch spacing distance and the pull rope length.)

Why Circular Vibrating Screen can not Start up and Amplitude is Small ?

Days ago,my Russian friend asked me why circular vibrating screen could not start up,however,the amplitude was quite small even if it start up,and the screening efficiency is quite bad,here I summarize the reasons as follows:
1.The circular vibrating screen motor breaks down,please replace the motor;
2.The electrical equipment control circuit fails,please maintain and replace the electrical equipment;
3.The voltage is low,you can alter the power supply;
4.There are many accumulation materials on the surface,please clean up the material;
5.The screen itself has fault,please check and maintain the vibrating screen;
6.The lubricating oil is over thick or caking,please clean the screen and add new lubricating oil;
7.You can also add balance weight to increase the amplitude.
Besides,please also note that the adjustment of vibration source on vibrating screen(exciter or vibrating motor) must be same,or it will cause equipment damage.

Conveyor Belts are Going to Be Depatched to Pakistan

Today, 2 conveyor belts are going to be depatched to Pakistan. According to descriptions from our customer, the equipment will applied for carrying out copper ore in a mining region with an open air. The complex weather must be taken into consideration, thus, a conveyor rainproof cover is necessary to defend equipment from severe environment.

PK Machinery’s engineer determined to select the DTIIA fixed belt conveyor after having a further conversation with our customer. Both of us are expecting another chance to work together.

More specialized equipment are available at PK Machinery, you may have a visit to our workplace to get to know more about us. Looking forward to your arrival!

What are Types Of Belt Conveyor Pulley Surface Coating?

 Belt conveyor pulleys play an important role in belt conveyor, such as transmitting traction for belt conveyor; changing direction of the conveyor belt; increasing the friction etc. Pulley surface coating on one hand,it can protect the conveyor belt from debris hurt ,on the other hand it can increase the friction between the conveyor belt and pulley, ensure normal conveyor belt running direction.
There are 3 types of surface coating which we commonly used: smooth surface coating, herringbone coating, diamond coating. Usually, Smooth surface coating is used for bend pulley which can increase the service life of pulley, reduce the friction between conveyor belt and pulley cylinder, then the pulley surface will not be corroded by material. Herringbone coating is commonly used for the transmission pulley, since the transmission pulley drives running of conveyor, strong friction will generate on the transmission pulley, so we adopt herringbone coating. Herringbone coating is suitable for the belt conveyor which conveys material in one way,while the diamond coating can be applied to the reversible belt conveyor, which can realize the unloading material bidirectionally.

Limestone Bucket Elevators and Screw Conveyor dispatched to Philippines

Last week,bucket elevators and screw conveyors used for conveying limestone were dispatched to Philippines,which would arrive with our clients within 12 days.
In order to meet our client’s requirement,and know well of their purpose,PK engineer suggested two bucket elevators and one screw conveyor,the information is as follows:

1.Bucket elevator 
Model:TDG250
Capacity:70t/h 
Lifting height:15m
Quantity:1 unit
2.Bucket elevator
Model: TDG315
Capacity:100t/h 
Lifting height:26
Quantity:2 unit
3.Screw conveyor
Model: LSY315
Conveying length:26
Quantity:1 unit
Purpose:conveying the limestone which are discharged from the silo outlet.
PK Machinery will follow up the further feedback after installation,we do hope we can cooperate once again in the near future!
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