Precautions for operation of main components of linear vibrating screen

Linear vibrating screen is generally composed of vibrator, screen box, support or suspension device, transmission device and other parts, and is mainly used in mining, coal, smelting, building materials and other industries. The working conditions of the linear vibrating screen are relatively harsh, and various failures often occur during operation. In response to these problems, the vibrating screen manufacturer gave us the following detailed explanations on the key points of operation and maintenance of the main components of the linear vibrating screen.

1. Adjustment of the eccentric block of the exciter

1) The size of the exciting force is closely related to the movement of the screen machine. There are 8 adjustment holes between the main block and the counterweight block of the eccentric block,which are equally divided by 15°, so it can be adjusted according to 8 positions at different angles. After being adjusted to different positions, the centrifugal force changes, and the vibration amplitude of the screen machine is changed accordingly.

When adjusting, each vibrator needs to be adjusted synchronously. If the adjustment position is different, the exciting force generated is different, and the material on the screen surface will jump irregularly. Therefore, correct adjustments must be made, especially when the exciter is replaced. When using the vibrator, the position of the adjustment hole must be consistent.

2) Inspection after adjustment, it is required that the two symmetrical points on both sides of the screen have the same amplitude and direction. If there is a slight difference in the amplitude of the two sides of the screen machine, no more than 0.5mm is allowed, because the movement track of the material is related to the uniformity of the material on the screen surface, and it is necessary to adjust the distribution of the incoming material in time.

2. Coupling

The vibration exciters on both sides of the screen machine are connected by universal couplings. When replacing them, attention should be paid to the straightness of the joint surface of the universal couplings. The universal coupling has been dynamically balanced before leaving the factory, and the straightness of the coupling is directly related to the vibration amplitude of the screen machine.

When replacing, use the method of natural sagging of the eccentric block of the exciter, and then connect and fix the universal coupling with the coupling of the exciter. The difference in screw hole position is adjusted by adjusting the position of the spline. One thing to note is that the length dimension of the coupling and the length dimension of the spline should be selected reasonably to avoid insufficient coupling length or spline jamming.

High frequency dehydration vibrating screen

3. Rubber buffer spring

Each rubber buffer spring can be used for about 15 to 20 months, and the size varies with the model of the screen machine. The temperature of the equipment cannot exceed 45°C when it is running. When replacing the rubber spring, attention should be paid to the elastic coefficient, that is, the height of the rubber spring at the inlet of the screen machine is similar to that of the outlet, so that the buffer rubber spring can be used reasonably and not easily damaged.

Also, when replacing the rubber springs, it should be noted that the rubber springs on the front and rear parallel lines should be replaced at the same time to avoid amplitude changes due to inconsistent aging of the rubber springs.

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More information about linear vibrating screens can be accessed by clicking: https://www.hsd-industry.com/vibrating-screen/linear-vibrating-screen/

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WHAT ARE THE EQUIPMENT COMPONENTS OF HYDRATED LIME PRODUCTION LINE

Hydrated lime is relative to quicklime. It is a common white calcium hydroxide substance with strong corrosiveness. According to the characteristics of the mine, it is mainly used in construction, metallurgy, building materials, mining and other fields.

Hydrated lime production line is a professional production line for special treatment of this substance. In order to improve the comprehensive utilization rate of this substance, it is a reasonable choice for us to choose a production line to process it. So what are the main equipment required for a complete set of hydrated lime production line?

Hydrated lime processing production line hardware composition

There are many processing techniques for hydrated lime. According to the properties and characteristics of the material, we need to use jaw crusher, Raymond mill, rotary kiln and other equipment.

THE FOLLOWING THREE TYPES OF EQUIPMENT ARE ANALYZED IN DETAIL:

1. Jaw Crusher

This equipment is a very common crushing equipment, which is suitable for many types of materials, so it is very reasonable to use it to process hydrated lime. It can effectively filter out impurities in the material, thereby improving its purity and reducing the content of impurities. , so the equipment is favored and recognized, so it is one of the important components for processing hydrated lime.

2. Raymond mill

Since hydrated lime is a non-metallic mineral, users will also choose Raymond mill for secondary treatment. This equipment has been greatly improved in terms of function through continuous improvement and innovation. During the processing of hydrated lime, The advantage shown is that the production capacity is large, so its output and production capacity will be higher.

3. Rotary kiln

In addition to crushing and grinding, calcination of hydrated lime is also a common processing method, and the equipment to realize the calcination process is the rotary kiln. The new generation of rotary kiln has a very high technological content, and the operation is simpler and more energy-saving. Environmental protection, low energy consumption, this move is in line with the concept of environmental protection, and has been highly recognized by the industry.

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For more information about slaked lime production line, please click to visit:https://www.ly-gaifeng.com/calcium-hydroxide-production-line/hydrated-lime-production-line

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What are the specifications of the grow rack stand?

The grow rack adopts Abeite reflective and heat-insulating integrated design laminates, which effectively prevents the laminates from absorbing moisture and self-expanding. Built-in power supply, independent control of lighting, safe, convenient, and easy to upgrade equipment; the frame is made of anti-static materials, integrated design, beautiful and generous, strong bearing capacity, no color change, corrosion resistance, small damage to the floor, easy to install ;The lamp tube adopts 28W/12w special spectrum lamp for tissue culture, which saves 60% of electric energy, increases the light intensity by 35%, increases the light quality absorption rate by 50%, and actually saves energy by more than 80%. The lamp tube has no corner bright spot, no water flicker, and quick response, which significantly improves the service life of the tissue culture lamp.

Grow rack stand parameters:

Brand: Yiteng

Light intensity: 0-3000/5000/7000/10000/15000—/60000lux

Dimensions: (1.25–2.0)*(0.5-1)*(1.8-3) meters (can be customized)

Number of layers: 6 layers and practical 5 layers (the number of layers can be set)

Number of lamps: 1/2/3/5/7/10/12/16 pcs/layer

Single floor area: 0.75—-2 square meters

Lamp power: 12wLED or (28w)/single lamp

Power supply: 220v

Weight: 40–100kg

Self-control: microcomputer timer, 24 groups of arbitrary settings

Bearing capacity: 150-200kg

Column specification: 38*38*1.5mm (conventional parameters)

Frame specification: 1250*500*40 (height)*0.6mm (conventional parameters)

Grow rack stand features:

1. The specific spectrum lamp has high luminous rate and low heat generation rate, and can be in close contact with the culture.

2. The light frame is equipped with an independent switch, which can effectively save energy and reduce consumption.

3. The heating rate of the lamp tube is low, and the life span is as long as 15,000 hours. The temperature difference between the inside and outside of the culture bottle is small, and there is less water accumulation on the wall of the bottle, which avoids the generation of glass seedlings.

4. 240ml tissue culture bottles, each layer can hold 120-200 bottles, 350ml tissue culture bottles can hold 100-160 bottles, 650ml tissue culture bottles can hold 80–120 bottles. (except lengthened and widened)

Grow rack stand specifications

Grow racks

1. Conventional laminate planting rack

Column specification: 38*38*1.5mm

Frame specification: 1250*500*40 (height)*0.6mm

2. Frame type (aluminum foil reflector, glass, tissue culture basket, etc.)

Column specification: 38*38*1.5mm

Frame specification: 1250*500*40 (height)*0.6mm

3. Cold-rolled steel buckle-type planting rack

Column specification: 30*40*1.5mm

Connecting pipe: 30*30*1.5mm

Laminate: 0.6mm

Bracket: 2mm

Frame specification: 1250*500*40 (height)*0.8mm

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For more information about grow racks, please click to visit:https://www.etegreen.com/vertical-grow-rack-systems/grow-racks/

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How to use the agricultural machinery clutch correctly?

The so-called clutch is to use “off” and “on” to transmit the right amount of power. The agricultural machinery clutch consists of friction plates, spring plates (disc springs are used for tractors, and diaphragm springs are used for harvesters), a pressure plate and a power output shaft. It is transmitted to the gearbox to ensure that the agricultural machinery transmits the appropriate amount of driving force and torque to the driving wheels under different working conditions.

The clutch is a device that connects the agricultural machinery engine and the transmission, and the clutch pedal is the clutch control device. When the clutch pedal is stepped on or lifted, the engine and the transmission will be temporarily separated or smoothly combined to cut off or transmit power to realize changes in the agricultural machine’s starting, shifting, parking and other motion states. Slowly lift the clutch until it is fully lifted. If the engine stalls when the clutch is lifted, it proves that the clutch is not slipping. If the engine does not stall when the clutch is lifted, it may be a problem with the clutch.

Tractor clutch

The tractor clutch generally uses a double-acting clutch, that is, one road is responsible for walking, and the other road is responsible for power output. Due to structural reasons, the gap between the flange of the clutch pressure plate and the housing is relatively small, especially in the south of the Huaihe River in my country, where there is abundant rainfall and high air humidity, and the tractor is not used every day (sometimes it is not used for several months) , In this way, it is bound to be prone to rust, which will cause adhesion between the pressure plate bracket and the flange, resulting in incomplete separation of the clutch.

Suggestion: before using the tractor parked for a long time, the tractor operator should first open the clutch inspection port, use a flat screwdriver to turn the clutch assembly, and spray a little rust remover on the three flanges of the clutch pressure plate, and then step on the A few clutch pedals make it move back and forth, and then the tractor can be used normally for various tasks.

13-Inch-16-Spline-with-Spring

Combine Harvester Clutch

Because the working environment of the combine harvester is very bad, there is a lot of dust in the air, and the clutch is an open structure. When the harvester is working, the dust in the air is brought into the clutch chamber from the gap between the clutch pulley and the clutch housing support, and is captured. The rotating clutch is driven by the centrifugal force to the inner space of the pressure plate, gradually forming the phenomenon of clutch slippage (the combine harvester will appear weak when walking). In addition, the clutch drive belt of the combine harvester should not be too tight and should not be started at high speed, otherwise, serious faults such as bending of the clutch shaft will easily occur.

Suggestion:

1. The designer of the Technology Center Research Institute should design grooves on the inner wall of the clutch housing (corresponding to the clutch pulley), and stick felt strips of uniform thickness to prevent large dust particles from entering the clutch chamber. Note: rubber seals cannot be used. ring, because the clutch pulley is at the end of a shaft, there will be a large jump).

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More information about agricultural machinery clutches can be accessed by clicking:https://www.syclutch.com/tractor-clutch

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To operate the road sweeper safely, you need to be alert to these points!

The road sweeper is a relatively common sanitation vehicle on the road at present. It can not only clean up garbage, but also dedust and purify the air on the road.

At present, the road sweeper has become one of the important helpers in sanitation work, so it is also very important to operate the road sweeper correctly. Injured by the operation.

Today, the tanker sales manufacturer mainly introduces 6 aspects that need to be paid attention to when using the road sweeper, so that we can operate and maintain the car more smoothly.

Pay attention to mechanical damage

When starting the road sweeper, you should pay attention to the gear position of the transmission to prevent the road sweeper from accidentally moving and hurting people. When working under the hood, other people should be allowed to leave the cab to prevent accidental injury caused by sudden rotation of the engine or misoperation by others. If it is necessary to work under the vehicle, obvious signs should be set up, and the road sweeper should be covered with a car cover. When using a jack to support the car, the jack should be placed stably. Before driving, you should prepare driving tools (driving stool), and it is forbidden to use fragile objects such as bricks. When installing the assembly, do not test the screw holes, keyholes, etc. by hand to avoid breaking your fingers. When testing the engine, it is not allowed to work under the road sweeper.

Watch out for fire

When maintaining the road sweeper, it is often necessary to use flammable and explosive items such as oil and cleaning agents. At this time, don’t forget the fire-fighting measures and prepare a fire extinguisher just in case. Do not smoke near the fuel tank and battery, because the flammable gas overflowing from the fuel tank and the hydrogen gas overflowing from the battery are easily ignited.

Watch out for burns

The engine that has just been turned off must be touched carefully to prevent burns due to the relatively high temperature of the various components of the engine (water tank, exhaust pipe, power steering fluid tank, and spark plug, etc.). If the engine temperature of the road sweeper is high, never remove the water tank cover or release the water switch to prevent burns.

Do not damage the road sweeper

Brake fluid has a damaging effect on the paint film of the car (including the paint film of leather shoes), and it can quickly dissolve the paint film of the car. Brake fluid is harmful to the eyes. If it splashes into the eyes, it must be washed away with clean water immediately.

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For more information about the precautions for the operation of road sweepers, please click to visit:https://www.ly-cimc-linyu.com/a/news/precautions-for-road-sweeper-operation.html

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What are the common faults in the process of using the bag making machine?

The bag making machine is a machine for making various plastic packaging or other material packaging bags. Its processing range is various sizes of plastic or other material packaging bags with different thickness and specifications. During the use of the bag making machine, there will be many problems. This article will help you to eliminate the use of the bag making machine.

1. The cold cutter of the flat mouth machine cuts continuously

When the cold cutting knife of the flat machine is always cutting continuously, check whether the cutting knife is sharp and whether it needs to be re-sharpened; check whether the balance of the upper and lower knives is appropriate balance.

2. The flat mouth machine cuts three or more strips, and the size of the bag is different.

Put a layer on the rubber roller behind the thin film, so that it can be evenly mixed with other materials.

3. The spring of the flat mouth machine is broken

If the self-adhesive strip is not in place, if it is tilted up and rolled into the spring, the spring will break, so the self-adhesive strip must be pasted properly during operation. Another reason is that the material is not neat or stuffed into the rubber roller, causing the spring to break.

3. There is a big difference between the two sides of the edge sealing of the bone bag making machine
It is necessary to adjust the aluminum pressure roller well, and adjust it to press both sides of the sealing edge, so as to avoid this situation.

4. The self-adhesive strips cut by the side sealing machine often stick to the conveyor belt

The self-adhesive strip is misplaced and stuck to the conveyor belt. It is necessary to adjust the self-adhesive position of the edge correcting machine behind.

5. There are burrs on the OPP cutting edge or the explosion-proof edge will be rotten

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For more information about frequently asked questions about the use of paper bag packaging machines, please click to visit:https://www.lyhuatianm.com/products-information/bag-making-machine-failure.html

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DETAILED EXPLANATION OF GEAR FORGING ANNEALING HEAT TREATMENT PROCESS

Carburized steel 20CrMnTi forgings are air-cooled to room temperature after forging to obtain a mixed structure composed of ferrite, pearlite, Widmansite and bainite. After heating to 930°C for carburizing and cooling to 850°C for quenching, coarse austenites still appear. Body grains, showing obvious tissue heredity. If after forging, after heat treatment, a mixed structure of ferrite and pearlite is obtained, after carburizing and quenching, the structure is obviously refined, and there is no organization heredity, which is the significance of heat treatment after forging. The main purposes of heat treatment for small gear forgings are:

(1) Eliminate forging stress.

(2) Obtain a relatively uniform metallographic structure and improve cutting performance.

(3) Reduce the deformation of the gear after carburizing and quenching.

gear

1. ISOTHERMAL ANNEALING

The forging material is 20CrMnTi, and the equipment is an isothermal annealing continuous furnace, which consists of a high temperature zone, a rapid cooling zone and an isothermal zone.
The isothermal annealing process is an advanced high-temperature heating zone for forgings. It is heated from room temperature to 940°C and held for a period of time to make it fully austenitized. Then it enters the rapid cooling zone and is rapidly cooled from 950°C to 650°C within 5~10 minutes. Make the forgings quickly enter the correct phase transformation range, and then keep warm at 650°C to make the forgings fully phase-transform to ferrite + pearlite structure, and send them out of the furnace to air cool to room temperature.

It should be noted that due to the different sizes of forgings, the isothermal annealing process curve should be adjusted according to the actual situation of the production site. The principle is to ensure that the metallographic structure of forgings is 1~3, and the surface hardness is preferably controlled at 160~210HBW. After testing, this production process is also suitable for the annealing of small shaft forgings, and the production capacity of the equipment is 600kg/h.

2. WASTE HEAT ANNEALING

The forging material is 20CrMnTi, and the equipment is a mesh belt waste heat annealing furnace, which is composed of a heating furnace and a rapid cooling chamber. The preheating annealing process is that after the forging is formed, it is directly sent into the heating furnace, kept at 650°C for 45 minutes, and then enters the rapid cooling room, and is cooled to below 70°C within 20 minutes.

When annealing with residual heat of forgings, the key point is to grasp the temperature of forgings entering the furnace and the holding time in the furnace. After field tests, it is found that the temperature of general forgings entering the furnace should be controlled above 800°C. At this time, the metallographic phase and hardness after annealing are most suitable; Forgings below 800℃ are likely to have unqualified microstructure and hardness after annealing with residual heat, so strict attention should be paid to them. The holding time and temperature cannot be generalized, and should be adjusted appropriately according to the size and thickness of the forging.

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More information about gear forgings can be accessed by clicking：https://www.gold-emperor.com/forging/forged-auto-parts/precision-forged-gear/

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Solutions to common problems of crane slewing mechanism

For hydraulic cranes, the slewing drive and motion control of the slewing mechanism mainly depend on the hydraulic system. Therefore, the common faults of the slewing mechanism are firstly related to the hydraulic system. The slewing mechanism is composed of three parts: the support device, the slewing drive device and the turntable. Its important mechanical part, the slewing support, is an important force-bearing part. It not only bears the weight of the slewing part of the crane, but also bears the vertical force of the lifting load. and overturning moment forces.

In the process of use, there must be wear and tear, and the performance of related mechanical parts will gradually deteriorate or even be damaged. Therefore, common failures of the slewing mechanism are also related to the mechanical part. Accordingly, crane failure analysis can generally start from two aspects: mechanical failure and hydraulic system failure. According to the relevant staff, the common faults of the slewing mechanism mainly include excessive clearance of the slewing bearing (wild movement), slow (weak) or immobile movement of the slewing system, abnormal system pressure, oil leakage, and failure to lock the slewing brake valve, etc. .

Weak or unable to rotate (system pressure is normal)

1. The hydraulic motor fails and the power cannot be output normally. Repair or replace it.

2. The reducer breaks down and affects the power transmission, check and adjust.

3. In case of overload, the lifting capacity must be checked again to avoid overload.

4. The overflow valve and manual control valve are faulty, check and adjust.

Cannot rotate (system pressure is normal)

1. The gear or worm gear or worm of the slewing reducer is damaged, check and repair.

2. The hydraulic motor plunger or bearing is stuck or severely worn, check and repair.

3. The output shaft of the hydraulic motor is broken and replaced with a new one.

slewing drive

Swing hydraulic system pressure is low

1. Fault phenomenon

If the crane is unloaded or lightly loaded, the sound and speed of its rotation are normal, but when the crane is heavily loaded, it will be difficult to rotate or even unable to rotate.

2. Cause of failure

The possible reasons for this phenomenon are: low pressure of the relief valve of the rotary hydraulic system, wear of the hydraulic motor, serious internal leakage or low pressure setting of the control valve, severe wear of the valve stem of the control valve, large internal leakage, and pressure loss.

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For more information about the slewing bearing for truck with crane, please click to visit:https://www.excavatorbearing.com/Slewing-bearing-for-truck-crane.html

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What are the categories of industrial robot bearings?

As one of the key components of industrial robots, industrial robot bearings are most suitable for the joints or rotating parts of industrial robots, the rotating table of machining centers, the rotating part of manipulators, precision rotating tables, medical instruments, measuring instruments, and IC manufacturing. devices and so on. The industrial robot bearings mainly include two categories, one is equal-section thin-walled bearings, and the other is cross-cylindrical roller bearings. In addition, there are harmonic reducer bearings, linear bearings, joint bearings, etc., but mainly the first two bearings.

Features of industrial robot bearings:

1. It can withstand comprehensive loads in axial, radial and overturning directions;

2. Thin-walled bearings;

3. High rotary positioning accuracy. Any bearing that meets this design requirement can be used in industrial robot arms, rotary joints, chassis, etc.

Types of Industrial Robot Bearings

1. Cross roller bearing

Crossed roller bearings are cylindrical rollers or tapered rollers arranged vertically on the 90-degree V-shaped groove rolling surface through spacers, so crossed roller bearings can bear radial loads, axial loads and moment loads and other multi-directional loads. The size of the inner and outer rings is miniaturized, and the extremely thin form is even closer to the limit of small size, and has high rigidity, and the precision can reach P5, P4, and P2 levels. Therefore, it is suitable for joints and rotating parts of industrial robots, rotating tables of machining centers, precision rotating tables, medical equipment, calculators, military industry, IC manufacturing equipment and other equipment.

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More information about industrial robot bearings can be accessed by clicking：https://www.prsbearings.com/Robot-bearing.html

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HYDRATED LIME EQUIPMENT PROCESS FLOW

The technological process of the hydrated lime equipment is to add the raw quicklime from the loader to the silo, evenly add it to the jaw crusher through the vibrating feeder, and crush it to about 30-50 mm. The dust generated during the crushing process of the equipment is introduced into the pulse bag filter outside the workshop by the induced draft fan through the dust cover of the jaw crusher. The calcium oxide powder of the filter should be cleaned once a week.

Hydrated lime equipment adopts a double-shaft stirring structure, which has multiple functions such as stirring, crushing and agglomeration, and self-cleaning. Its unique paddle and stirring formula make quicklime and water mix evenly, react fully, and play a role in the agglomeration generated during the reaction.

The feed port of the digester is designed with a screw feed propeller to facilitate material transportation. In order to prevent the backflow of dust generated during the digestion process, the equipment is equipped with a special steam and dust discharge port, which can be discharged to a special dust removal system through a connecting pipe, and is used with DMC pulse dust removal Q device in conjunction with hydrated lime equipment, which can handle quicklime well dust and harmful gases produced during digestion. Waste dust and lime can be reused after use, and the environment has no dust pollution, which meets the requirements of environmental protection development.

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Click to visit for details：https://www.ly-gaifeng.com/blog/hydrated-lime-equipment-process-flow.html

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