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How to choose drag-chain conveyor

The reasonable selection of scraper and chain depends on its structure form, chain pitch, scraper pitch and material of construction. When choosing, people should pay special attention to meet the requirements of production capacity, and make the scraper & chain have the adaptability to material. 1. Selection of Scraper Structure Form The scraper structure form determines the transportation effect of buried scraper conveyor. It could get a good effect through the reasonable selection of scraper. Otherwise, the improper selection of scraper may cause poor transportation effect, even failure. On the condition of meeting the adaptability to material, the selection principle is to choose the scraper simple in structure. In the specific use, the scraper can be chosen according to the material features (viscosity, suspension property and fluidity), conveyor trough width and conveyor arrangement form. 1) The material has good transportation property: the scraper in simple shape is preferred, such as T-type, V-type, U-type, etc. The material has small internal friction coefficient, strong suspension property and high fluidity: complex shape scraper should be used, such as H-type. 2) The material has heavy viscosity, or the viscosity becomes big after the material moisture absorption: in order to reduce the material adhesion on the scraper, and unload and clean material easily, it is better to choose simple structure scraper, such as T-type, V-type, U-type, etc. 3) The material is easy to float chain: the scraper can be inclined position welded. 4) The trough width of buried scraper conveyor is smaller: it is appropriate to use simple shape scraper. When the material with large bulk density is transported in bigger conveyor trough, in order to increase the scraper rigidity, it is recommended to use O-type scraper with diagonal strut. 5) The buried scraper conveyor is horizontal installation: T-type, U-type or V-type scraper is generally used. Conveyor vertical installation: V-type and U-type scrapers in outward form arrangement are usually chosen. Z-type buried scraper conveyor: V-type scraper in inward form arrangement. Ring-lock (MK type) buried scraper conveyor: V-type scraper in outward form arrangement. Planar ring structure (MP type) buried scraper conveyor: L-type scraper in outward form arrangement. Facade ring structure (ML type) buried scraper conveyor: V-type scraper in outward form arrangement.

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What Factors Lead to Inflexible Rotation of Conveyor Roller

In our daily use of conveyor roller, inflexible rotation phenomenon may occur during the operation, what factors lead to inflexible rotation of conveyor roller? Let’s see the following two parts: The manufacturing quality of belt conveyor idlers The manufacturing problems of belt conveyor mainly are bearing lacks of rigidity, difficult to ensure the roller assembly accuracy , which restricts the operation flexibility. Sealing, lubrication and maintenance Because of belt conveyor working environment is relatively poor, generally, operation site is full of dust, and the bearing sealing form has big influence on roller operation flexibility. If sealing poor, dirt can easily enter into the bearing inner which causes inflexible rotation; in addition, if bearing grease adopts common calcium base grease ,it is easy to change color and become dry, can't reach a very good lubrication effect.

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Merry Christmas and Happy New Year

New Year is coming soon, here PK Machinery wishes everyone a happy new year. New year is approaching, in order to appreciate the trust and support of customers, many shopping malls launch a variety of promotions, for example, super big sale, discounts and other promotions. Of course, not only daily commodities have such promotions, in our PK Machinery also has such activities. Promotional activities are as follows: 1.In accordance with different configurations, we can quote our customers best discount based on the original price as to vibrating screen and conveying equipment. 2.We will provide free site planning and design for customers in need. In order to thank the support of our customers, Henan Pingyuan Mining Machinery Co., Ltd puts forward a favourable activity, not exaggerate, not cheating. And we just want to give a gift to our customers in the New Year. Henan Pingyuan Mining Machinery Co., Ltd wishes you happy Christmas. 

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How to solve inflexible rotation problem of conveyor roller?

To ensure accuracy during conveyor roller manufacturing process Such as the inner hole precision of punch bearing housing should reach grade 3, dimensional tolerance,coaxial degree and ovality of the pipe body two ends must conform to the national standard,can not exceed the tolerance. Sealing and lubrication in addition to ensure the quality of manufacture, also require better lubrication materials, such as lithium base grease which can improve the bearing lubrication performance, this is very necessary to prolong the service life of roller. Bearing seat adopts labyrinth seal structure of centripetal ball bearing supporting and plastic sealing ring, which can guarantee reasonable bearing stress of roller during operation,but also ensure good dust prevention effect, small resistance, and convenient installation and easy maintenance, it can effectively reduce the conveyor operation cost at the same time. 

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Differences between the YK and YA circular vibrating screen

When customer choose and buy circular vibrating screen, YA and YK series of vibrating screens are optional. So what's the difference between the two types of vibrating screen? Which series should choose? Here,PK Machinery answers for you. In general,YA and YK belong to circular vibrating screen series, YK series block type eccentric circular vibrating screen is updated products of YA axis eccentric circular vibrating screen.

According to the research,development and the application level of domestic and overseas vibration machinery , bring in the advanced technology in the same industry of Germany, Japan and other countries, combine with the actual running environment,our engineers fully optimize and design a new type of high efficient YK series vibrating screen. In addition,retaining the feature of the original YA type axial eccentric circle vibrating screen,YK series circular vibrating screen has the following significant advantages: 1.Exciter adopts eccentric block form which not only makes the single heavy exciting force of the eccentric exciter weight increase, but also exciting force can be randomly controlled, so it is easy to modular design and use; 2.Simple machine structure is beneficial to improve the level of equipment manufacturing technology and assembly accuracy; 3.Using the flexible connection of cross axle cardan shaft or rubber coupling etc which makes running smooth; 4.Sieve machine is more efficient with greater capacity; 5.Using cycle and service life is longer; 6.Equipment maintenance will be simple and convenient,the machine running efficiency is improved significantly.

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The key points for screw conveyor selection

1.Conveyor capacity Screw conveyor conveying capacity refers to the amount of material per unit time.Users should consider whether the conveyor can support the use of other production equipment before design in order to design a reasonable conveyor model. 2.Conveying speed Conveying speed can improve the transmission capacity. For conveyor which adopts chain as traction, the transporting speed should not be too fast, in order to prevent the power load increasing . 3.Component dimensions The component dimensions of conveyor includes conveyor trough width or pipe diameter , etc. Which directly affect the transmission capacity of screw conveyor. 4.Conveyor length and inclination Conveyor length and inclination directly affects the total resistance and required power of the conveyor. Screw conveyors installation can be level and inclined, so please let us know the using condition when select the model. 5.Screw conveyor motors Motor selection can be speed controlled motor or general motor to control the conveying speed and throughput per hour. 6.Others Whether hopper should be considered in the inlet or not,as well as the feeding hopper size.

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How much knowledge do you know about belt conveyor magnetic separator ?

When customers purchase belt conveyor, they only provide conveying material name, but seldom mention whether the material contains other impurities or not.For example, if long and big iron contained in the material, it will be easy to scratch the conveyor belt, so magnetic separator plays an important role.In this article,we will introduce the magnetic separator as follows: Magnetic separator is applicable to various fields deironing, which can realize continuous iron absorption and removal. Please pay attention to the conveyor belt, bandwidth, dip angle, material properties, moisture, material thickness an iron content percentage, the nature of the magnetic material, as well as the deironing requirements and the environment condition to select a suitable magnetic separator. Magnetic separator can remove the ferromagnetic impurities which are mixed in material, to ensure the safe and normal transmission system work of the crusher, grinding machine and other mechanical equipment,at the same time it can effectively prevent belt scratch caused by the large, long iron besides,the grade of raw materials can be significantly improved.

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Application of Sidewall Belt Conveyor in Thermal Power Plant

1.Requirements Sidewall belt conveyor is the major equipment to convey coal and lime-ash in thermal power plant. Therefore it has high requirements for the security of equipment. Generally speaking, the whole transit line is equipped with twin channel sidewall belt conveyor, one is put into use, another is as standby application device. Thus, this coal handling system must be equipped with sidewall belt conveyor with 2500m-3000m length. Applying sidewall belt conveyor to thermal powder plant, it can not only simplify procedure, but also save cost. 2.Features Due to power plant has high requirements for the security of equipment, technical requirements of sidewall belt conveyor are as follows: 1) It has different requirements for belt conveyor when it used to receive, convey or discharge materials. For instance, if the belt conveyor is used to receive materials, the belt speed of it shouldn’t be too high. If it is used to convey materials, it requires that trough angle of idler decrease properly. If plow discharger is put into use, the cover rubber of belt surface should be thicken properly. 2)The belt speed should be low. Belt conveyor is mostly arranged in workshop, so it has high requirements for coal dust control. According to domestic and foreign practical experience, it’s better to adopt lower speed. 3)After installation of this machine, it seldom changes its layout. 4)Different coal type has different requirements for belt conveyor. For example, large coal particle size needs impact idler with high quality. Coal with less water and more dust needs guide chute with good sealing.

[pkmachinery]

Bucket elevators design considerations

Bucket elevator is widely used in many industries, the bucket elevator model selection is very important. What notices should we pay attention to during the selection of the model? Please check the following : 1.In general, the types of bucket elevator belt are ordinary or heat- resistant steel cord belt. Ordinary steel cord belt is suitable for material with temperature lower than 80 degree. Heat- resistant steel cord belt is suitable for material with temperature lower than 120 degree. 2.Considering the uneven feeding material and lump size, the allowance of the bucket elevator capacity should be sufficient. 3.The driven device support frame and maintenance platform should be installed on the head casing. Customer should state whether need the maintenance platform according to requirement. 4.There is dust removal flange on the head part of the bucket elevator. You can connect with dust collector if the material with large amount of dust. 5.Please provide the following information for us to select model: material name, size, bulk density, temperature, moisture content, lifting height, feeding equipment name, working indoor or outdoor. 6.If the conveying material is fly ash, the bucket speed should be less than 1.3 m/s. The driven part should be specially designed. 

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Belt conveyor tripper for wooden chip were dispatched to Thailand

Last week(11th December),circular vibrating screen,belt conveyor with tripper designed for wooden chip production line were loaded to containers to be delivered from Qingdao Port to Bangkok PAT Port,all equipment will arrive with client after 10 ten days’ sailing.

Circular vibrating screen is used to separate wooden chip size larger than 50mm,and stone size smaller than 4mm.While the belt conveyor with tripper of width 1000mm and 650mm ,length 25m and 42m will be placed on the warehouse top in order to convey wooden chip to achieve the fully utilization of warehouse storage.

Besides,metal detector,permanent magnet and drum separator are also required by client,the permanent magnet which will be installed at the feeding end aiming at preventing materials from metals,metal detector and drum separator are used for the purpose of eliminating the metal in the production line.

[pkmachinery]

What reasons lead to material accumulation phenomenon of vibrating screen?

Some customers said material accumulation phenomenon occurred in the use process of vibrating screen, according to many years of analysis experience, the reasons can be summed up in four aspects: 1.There is a problem of vibrating screen mesh selection, too small mesh will cause a low rate of material passing through the mesh. 2. Check whether the ground level of the vibrating screen is flat or not, besides,high material inlet will affect the material running track, resulting in material tilting to one side.

3.Check whether the screen mesh and outlet are horizontal or higher than outlet or not, under normal circumstances, it should be horizontal or 6mm higher, the design is not the same according to different material discharging outlet.

4.There is a problem on the vibration motor angle adjustment, improper angle adjustment of vibration motor will cause material accumulation, if the angle is small,the material will spread outward quickly on the sieve surface,while if the angle is large, the spreading speed will be slow. If you have strict requirements of screening accuracy, the angle can not be too small so as not to affect the screening precision. In general, the vibration motor angle of the vibrating screen is 45 degrees when leaves the factory.

Users can also change the vibration motor angle to 100 degrees according to the the special requirements of the material ,and then material will be concentrated to the central screen mesh.

[pkmachinery]

How to choose the suitable vibration motor for the vibration machine?

Vibration motor has many types and models with a wide application,it is usually applied with the feeder, vibrating screen combination. The vibration motor is very important in the vibration machine. It directly determines the working efficiency of the vibration machine.The vibration mechanical vibration motor selection steps are as follows: A.According to the operating requirements, confirm the required vibration of the frequency (r/min) and the amplitude Ym (mm). Such as the six vibration motor (n=960r /min) can drive the vibration chute, vibration feeder, vibration mill, vibrating screen etc. B.According to the structure of the vibration machine itself, get the vibration weight G (kg) and calculate the required vibration force Fm (N) . C.According to the vibration of the operation to get Fm, you can get the model of the vibration motor, please pay attention to the exciting force FH is larger than Fm. D.Design the overall structure, and calculate the actual vibration parameters, after the calculation, if the vibration motor is too large or too small, motor model should be re-selected. E.Design of vibration isolation system.

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How to solve problem of damp material blockage occurs in vibrating screen ?

Vibrating screen is a kind of high precision and fine powder screening equipment, with the characteristics of low noise, high efficiency, small size and quick screen mesh replacement,it adopts fully enclosed structure which is suitable for particles, powder, liquid, etc. Clients ever said wet material blockage occurred in vibrating screen,here PK Machinery will list some suggestion,hope it is helpful. 1.Increase the excitation force of vibration motor and increase the amplitude. 2.Increase the vibration frequency, please use the high-frequency vibrating screen. 3.Diluted with water to increase the liquidity of material. 4.Replace the screen mesh regularly to avoid damp material blockage. 5.Manual work assisted cleaning up the screen mesh blockage. 6.Equip with cleaning device, such as the brush. Hope above mentioned are workable, if you have the other problems about vibrating screen,welcome to contact us freely.

[pkmachinery]

Installation notice of circular vibrating screen punching mesh

General screen meshes include manganese steel woven wire mesh, punching mesh and stainless steel screen plate etc. Each kind mesh should be selected according to the on-site working condition. Today we will talk about the installation of punching screen mesh. The punching screen mesh installation method for circular vibrating screen is the same with dewatering screen. Generally speaking, the slurry dewatering screen is horizontally installed,however, in order to guarantee the application effect, the screen mesh is installed with a negative angle. The screen mesh can be polyurethane material with tension type installation, or stainless steel bar screen mesh with compression type to meet different working conditions.

Circular vibrating screen is installed with angle, when adopt the punching screen mesh, it needs lumps of wood to press tightly, then tension with wood key . Please see the following sketch: If the screen mesh tension is not enough, it will bring negative influence: 1.The screen mesh is easy to bend and the screen mesh will slack and easy to revibrate. Meanwhile it will reduce the screen mesh service life. 2.It will influence the effective screen surface, reduce the screening efficiency. 3.It will stop the material moving forward and reduce the capacity. In this regard,in order to guarantee the smooth screen mesh , increase the service life and guarantee the capacity and screening efficiency, the tension of screen mesh must be improved.

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Improve dry or wet screening efficiency of vibrating screen

Following methods can improve screening efficiency of vibrating screen: 1.For dry screening,we should strictly control the water content,for material with high water content,please consider screening with ingredients. 2.Reduce the of plugged hole,we can consider using the self-cleaning sieve plate,for example,for spring rod type screen mesh surface,we can add a prevent blockage device below the screen. 3.Improve the aperture percentage,high aperture percentage is beneficial to improve the screening effect. 4.Adjust the feeding way.Material can be fed according to the sieve surface width and ensure the sieve surface can be fully utilized. 5.If possible,please consider the dip angle of the screen machine,suitable angle is beneficial to reduce the thickness of material and achieve thin material screening. 6.For circular vibrating screen,we can consider adjusting the balance weight to improve the screening effect. 7.If possible, coarse screening before feeding material. 8.If possible, we can adopt wet screening,it’s the most effective way to improve the screening effect.

[pkmachinery]

What is the required parameter for screw conveyor model selection?

In our daily life,screw conveyor is a common used equipment.In order to ask manufacturers  to select model and quote price more quickly and accurately,we need to provide complete machine technical parameter and requirement to manufacturers. Here,PK Machinery lists the parameter needs to offer for reference: 1. Material name _______ 2. Material size _______mm 3.Size distribution_______%? 4 .Material water content _______%? 5 .Handling capacity________t/h 6 .Material density ________t/m3? 7 .Material temperature _______ ℃? 8. Material is corrosive or not_______? 9. Distances between inlet and outlet ______m 10.Voltage __V__HZ 3 phase 11.Upstream and downstream equipment _______ 12.Working environment _______

Thus PK Machinery can select model as per your requirement.Further information please click:www.pkmachinery.com

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Deliver Conveyor Rainproof Cover to Madagascar

Last week, more than 600 pieces conveyor rainproof cover used for belt conveyor was delivered from Shanghai Port. These goods were ordered by our Madagascar customer, and they will be transported to the Toamasina port as anticipated one month.

According to the information offered by our customer, we provided three kinds of conveyor rainproof cover to them. One is matched with 800mm belt width conveyor, another is matched with 1000mm belt width, and the last one is matched with 1400mm belt width. Meanwhile, the quantities of conveyor rainproof conveyor are 490 pieces, 110 pieces, 40 pieces respectively. Also, they have the same thickness that is 0.8mm.

Conveyor rainproof cover is the important component in belt conveyor. It can not only protect materials, but also protect the belt conveyor. PK Machinery can provide conveyor rainproof cover with high quality. Welcome to your enquiry at any time!