Pull Cord Switch on Belt Conveyor

Do you Know Installation and Adjustment of Pull Cord Switch on 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.)

Pay Attention to the Unbalance Motor Vibration Phenomenon of Vibration Table

Pay Attention to the Unbalance Motor Vibration Phenomenon of Vibration Table

On the surface of it, vibration motor will become a veritable vibration equipment, just need plus a few springs on the equipment, and put on a few motors, then it will be applied for vibration production? While it’s more difficult than what you see. Now PK Co., Ltd will give you the further insight about the unbalance vibration phenomenon of the vibration motor for vibration table.

The problem of uneven and unbalance that causes the vibration can never be solved when the vibration motor is running in the equipment. There is influence of the unbalanced vibration in the screening equipment, however, in the process of making the vibration table, the problem usually happens. We also always take less importance to the problem of the unbalanced force of vibration equipment in reality.

1.The problem of motor rotation can happen and the material will move on the surface of vibration table in the use of a single vibration motor on the vibration table.

2.The uniform vibration point of the vibration table will be changed in the use two vibrating motors. The counter rotation of two motors will result in the power counteraction in the middle of the vibration table. The vibration amplitude in the center of the table can’t be over 3mm if the vibration amplitude around the platform is 5mm.

PK Engineering Suggests Daily Care and Maintenance of Motorized Pulley

PK Engineering Suggests Daily Care and Maintenance of Motorized Pulley

Are you worried about maintaining and repairing motorized pulley during belt conveyoroperation? We are sure the following solution in four aspects will be a big help :

1. In order to create a good situation for normal operation, surrounding environment, fastening bolts, oil leakage, the cable should be checked before each start-up.

2. Start up the new pulley with inching running, then it will become normal gradually, machine vibration, noise, and temperature heating of each operating component should be checked after running for 10 minutes.

3. If oil leakage occurs to motorized pulley, two parts should be checked : one is oil seal, check it whether has wear and tear or deformation phenomenon, if any, please replace the cage oil seal timely; the other one is that the outlet mustn’t be blocked, if there is any blockage, the deposition of dust, grease and sundries shall be removed as soon as possible to ensure smooth access.

4. Regulation of the oil level height is one of the conditions to ensure the normal operation,so please check the oil level regularly.

More information,please click:www.pkengineeringsol.com

What reasons lead to linear vibrating screen motor base crack

What reasons lead to linear vibrating screen motor base crack

All users know that the vibration motor is the vibration source of linear vibrating screen , it will bring inconvenience of operation if the vibration motor base cracks and damages. Here are some analysis reasons for you:

1. Too large motor power ,model selection and exciting force which exceed the normal load of vibrating screen, it will cause damage of motor base for long time operation

2. Too thin steel plate thickness design with long time operation will cause crack.

3. There is a problem with steel plate material.

4. Welding quality can not meet the requirements.

5. The installation position of the motor does not conform to the design requirements of the vibration dynamic specifications.

More product information, please pay attention to www.pkmachinery.com

Guide Rail Makes Tripper or Bucket Elevator Perform Better

Guide Rail Makes Tripper or Bucket Elevator Perform Better

Guide rail is made of metal or other material to become groove or ridge which is a device that can withstand, fix and guide mobile device or reduce their friction. Longitudinal groove or ridge on the surface of guide rail is used for guiding or fixing machine parts. Moreover, it is also known as sliding rail or linear guides, used in the occasion of linear reciprocating motion. It has a higher rated load and can assume certain torque. At the same time, high-precision linear motion can be achieved in the case of high load.

Guide rail provides a precise operation track for the conveyor tripper car. Matched with the belt conveyor, conveyor tripper car can achieve the aim of discharging materials at any points in the certain length of belt conveyor through moving back and forth on the guide rail.

In general, guide rail is installed in the head, tail and middle part of chain bucket elevator. Also, it is usually made of wear-resistant steel and its surface is quite smooth, so on the one hand it can lessen the friction between chain and guide rail and reduce components depreciation rates, on the other hand it can prevent the chain being off tracking, so as to achieve the purpose of conveying materials efficiently.

PK Machinery adopts the best quality guide rail which is manufactured by Ma'anshan Iron&Steel that is best rail manufacturer in China, and it is used for conveyor tripper car and bucket elevator.

 

What Reasons Cause Bearing Premature Failure

What Reasons Cause Bearing Premature Failure

Bearings is a small part which can fix and reduce load coefficient of friction during the processing of mechanical transmission. No matter vibrating screen, belt conveyor, bucket elevator or scraper chain conveyor, bearing is always one of their important parts. However, there is premature failure phenomenon during using. So we will introduce the cause of the bearing premature failure.

Improper installation

A big number of the premature failure bearings are cause by improper installation or the users haven’t realized to use correct installation tools. For correct and effective installation and disassembly,different installations may require mechanical, hydraulic or heating method. Based on professional engineering service technical knowledge, special tools and professional installation, you can get maximum machine trouble-free operation time.

Improper lubrication

Although we do not need to consider this problem if using” free- maintenance” bearing, there are still 36% bearing premature failures are due to incorrect technical parameters of lubricant. Inevitable result is that the bearing lacks of correct lubricant, which will fail prematurely. As bearing is the most difficult part to be accessed in the whole machine, neglecting lubrication may cause all kinds of problems

Pollution

Bearing is a precision part, they can not work efficiently if they can not keep away from the pollutant. At least 14% of all bearing premature failures are due to pollution problem.

Do You Know the Installation Position Requirement of Belt Weigh Scale

Do You Know the Installation Position Requirement of Belt Weigh Scale

The belt weigh scale measures bulk solid materials of the belt conveyor automatically and continuously, it can measure instantaneous throughput and total cumulative throughput. The belt weigh scale is widely used in industrial feed-in automatic continuous weighing and automatic Ingredients weighing.

Do you know the installation position requirement of the belt weigh scale? PK Machinery will answer for you!

1.The belt weigh scale should be installed in a linear segment of the belt conveyor.

2.The installation place should be where belt tension of belt conveyor change least, installing near the tail is ideal. When installed in the tail ,the distance between the belt weigh scale and the loading point should be not less than 5 ~ 9 meters, at the same time the distance between plate and The belt weigh scale shall not be less than 3 ~ 5 drag roller spacing.

3.When the belt weigh scale must be installed near the concave belt, should ensure that it is installed on the conveyor line segment and ensure that the entire loading place before and after the belt weigh scale at least four drag rollers are closely contacted with belt.

4.When the belt weigh scale must be installed in the vicinity of a convex arc curve, should ensure that there are no arc belt in the vertical direction between the loading point and the belt weigh scale .the arc segment must be 6 m or 5 times drag roller roller spacing outside the weighing segment dragged.

5.When the belt conveyor has mobile discharger, should comply with the requirements of the "(3)", at the same time ensure when running the belt centerline always match together with the belt weigh scale centerline.

6.To guarantee the accuracy of the belt weigh scale measurement, the belt conveyor should have only one loading point.

7.In order to ensure the measuring accuracy, the capacity of the belt conveyor should be in the range of 20 ~ 120% Qmax.

Needed Parameters to Select Belt Conveyor Pulley

Needed Parameters to Select Belt Conveyor Pulley

You need to provide following parameters before you purchase belt conveyor pulley.

1.Diameter of pulley wall(not include rubber thickness):_________mm.

2.Length of pulley wall:___________mm.

3.Diameter of pulley Shaft:_________mm.

4.Length of pulley Shaft:___________mm.

5.Material of Pulley wall:______________.

6.Material of Pulley shaft:_____________.

7.Bearing brand:_____________.

8.Keyless Locking Devices brand:____________.

9.Surface treatment:______________(coating rubber/galvanized/other)

(1)If coating rubber,thickness of rubber:__________mm

(2)Rubber type:____________(herringbone/rhombus/other)

10.Pulley type:_________(ordinary pulley or motorized pulley)

If motorized pulley,please confirm following information:

(1)Motor installation type:______________(exterior installation or interior installation)

(2)Motor Power:_________Kw.

(3)Motor Voltage:3 phase ______V______Hz.

Besides,in order to ensure conveyor pulley to meet your needs,please confirm the conveyor information:

1.Handling Capacity:________t/h.

2.Belt speed:__________m/s.

3.Driven device Power:_____________kw.

It’s better that if you can provide pulley drawings!

The application of conveyor belt fluid coupling

The application of conveyor belt fluid coupling

Fluid coupling is a used fluid transmission component. Motor drives coupling pump wheel rotation, pump impeller blade agitates intracavitary working liquid, under the centrifugal effect,pump wheel turns mechanical energy into liquid energy, then passes to the turbine blades, turbine passes the absorbent liquid energy to the machine.

Fluid coupling has the function of flexible transmission,slow down the impact and the isolation of torsional vibration, prolong the start-up time, reduce the starting current,make the motor light load start-up, solve the problem of heavy large inertia load start-up difficulties and protect the motor when overloads, energy and power saving effects are remarkable.

On the conveyor, fluid coupling has the function of connecting motor and reducer ,it replaces the mechanical coupling. The belt conveyor fluid coupling has two effects:

1.Overload protection

If the belt conveyor is overload, fluid coupling slip frequency increases, working fluid warms up, fluid coupling will spray without burning motor to a certain temperature. Of course sometimes coupling will be installed with a temperature control device, when work liquid superheats, temperature control device can control the motor and cut the power cut to protect the motor.

2. Flexible-start

When motor starts,belt conveyor starts slowly and acceleratedly , this can reduce the grid big impact to make the motor start up in light load. At the same time,it can reduce the effect of belt tension,protect belt and prolong life, especially under the heavy load start-up.

What is the required dimension for conveyor roller selection

What is the required dimension for conveyor roller selection

1. We can provide standard roller suitable for belt widths of between 400mm and 2400mm. 

1) Belt width: 400mm, 500mm, 650mm, 800mm, 1000mm, 1200mm, 1400mm, 1600mm, 1800mm, 2000mm, 2200mm, 2400mm

2) Roller diameter: 63.5mm, 76mm, 89mm, 108mm, 133mm, 159mm, 194mm, 219mm

3) Roller length: 200mm – 2500mm

2. Could you provide the following specification for conveyor roller selection?

1) Shaft Length A __________mm

2) Gauge Length B __________mm

3) Face Length C __________mm

4) Roller Diameter D __________mm

5) Across Flats E __________mm

6) Wall Thickness F __________mm

7) Shaft Diameter G __________mm

How to Select Conveyor Cover

How to Select Conveyor Cover

Application and Working Principle：

YD Conveyor Covers is well known as conveyor belt hood and used to protect transported material and conveyor belting, idlers and structure. Effectively they improve personnel safety; reduce loss of material to wind and stop grime and rain from damaging the idlers and belt.

YD Conveyor Covers is mostly used in power plant, cement factory, iron and steel factory, chemical factory, coal, port, jetty, mining and other enterprise. Our company provides fixed-closed type and open type. The color of the rain covers are mainly in blue, grey and white, and red (depend on client’s need).

Selection guidelines

1). Please tell us your belt conveyor’s width____mm and length____mm;

2). If possible, please indicate the opening width____mm of the conveyor cover; 

3). Please indicate the thickness of the cover you required____mm;

4). Every piece conveyor cover’s length is 970mm, except overlap installation, the effective length is 900mm. 

5). The material is colorized galvanized steel plate, the thickness are 0.5mm, 0.6mm, 0.8mm, 1.0mm.

6). Coud you tell us will you need fixed type conveyor cover or open-close type conveyor cover?

Part open-close type（generally for large belt conveyor width）

Whole open-close type