Bottom paste machine installation and debugging steps

Bottom paste machine is a device used to produce valve pockets. It is usually used together with drum making machine. Bottom paste machine is mainly designed and manufactured by photoelectric, electromechanical and pneumatic integration technology. The working process is mainly controlled by photoelectric PLC automatic control system program. Finish.

The bottom gluing machine is mainly responsible for unwinding and overprinting the bag body of the valve pocket, and the bottom gluing machine is responsible for the sealing of the valve pocket. Glue, turn over the bottom of the bag and other processes to jointly produce the valve bag. The bottom paste machine can realize automatic feeding, gluing, transportation and other processes, instead of manual operation, which greatly improves the production efficiency. At the same time, it can be more convenient and save some raw materials.

Because the bottom paste machine is completed by PLC photoelectric program automatic control system, its feeding speed will not be limited by the structure, and it will change with the speed up and down of the frequency modulation motor.

square bottom paste machine

The installation and debugging steps of the bottom paste machine are summarized as follows:

1. Before installing the bottom gluing machine, you should carefully check the work order and samples, determine the glue used for the gluing box, and prepare it;

2. Adjust the width of the bottom baffle to be pasted, the two sides should be parallel, and just put down the semi-finished color box to be produced, the distance between the two side baffles is less than 1mm from the color box, and then adjust the limit bolts to ensure that each product to be pasted passes smoothly. and no fetters appear;

3. Adjust the slope and height of the bracket in the bottom area to be pasted to ensure that the pasted products can pass smoothly without other obstacles. After pressing, adjust the auxiliary guide rail and flow wheel to make the size suitable for the specifications of the color box to be pasted;

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Details can be accessed here: https://www.lyhuatianm.com/products-information/bottom-paste-machine-installation.html

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What is the working principle of high pressure roller mill?

High pressure roller mill is a new type of grinding equipment developed on the basis of roller press for cement in recent years. Mines increase the specific surface area for fine grinding. The high pressure roller mill has the characteristics of high production efficiency, large crushing ratio , low power consumption, significant energy saving and convenient maintenance. For the operator of the high pressure roller mill, as long as the clinker can understand the working principle of the high pressure roller mill, the operation of the high pressure roller mill can be more handy, then do you know what the working principle of the high pressure roller mill is? What principles will be followed when it smashes materials?

high pressure grinding rolls

The working principle of high pressure roller mill

The high pressure roller mill is the same as the roller crusher in that there are two working rollers, but the working principles of the two are different. The high pressure roller mill is mainly composed of frame, extrusion roller, transmission device and feeding device. The squeezing roller is composed of a movable squeezing roller and a fixed squeezing roller, the two rollers have the same diameter, the axes are parallel to each other, and there is a certain gap between each other. When the high-pressure roller mill starts the motor, the roller shaft starts to rotate under the drive of the motor. At the same time, the movable roller is squeezed by the continuous thrust of the hydraulic cylinder, and the reaction force generated by the extrusion of the material acts on the fixed Can rotate at the same speed and in the opposite direction. When the material falls between the two extrusion rollers from the feeding port, it is crushed by the two rollers and squeezed into a dense roller c take for discharge.

The pulverization principle of high pressure roller mill

Compared with the traditional pulverization technology, the pulverization of the high-pressure roller mill is mostly quasi-static pressure pulverization. This pulverization method saves 30% energy consumption compared with the impact pulverization method, and the high-pressure roller mill can also pulverize the material layer.

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Details can be accessed here: https://www.zymining.com/blog/working-principle-of-high-pressure-roller-mill.html

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Calcium hydroxide production line operating procedures

Calcium hydroxide production line is a kind of equipment that makes calcium hydroxide from powdered calcium such as quicklime. Therefore, understand the specific steps of the operation procedures of calcium hydroxide production line, learn how to better operate calcium hydroxide production line and calcium hydroxide production line The key points of the operation procedures are the basic requirements for operators of each calcium hydroxide production line.

Specific measures for the operation procedures of calcium hydroxide production line

1. Use a machine to crush the quicklime to a size of about 10-40 mm, and then send it to the calcium oxide storage tank through a bucket elevator.

2. During the production process, the calcium oxide in the silo enters the first-level slaked lime digester through the weighing system. After adding water, it is stirred at a low speed with stirring. During this process, the calcium oxide undergoes a chemical reaction to complete the preliminary digestion and classification.

3. Then enter the secondary and tertiary digesters to complete the digestion process.

calcium hydroxide production line

4. After the digested lime is naturally decomposed, it is screened through the screen to obtain suitable specifications, and then sent to the bucket elevator by the screw conveyor, and then sent to the screen classifier by the bucket elevator for re-screening and rejection . impurities to obtain qualified refined slaked lime.

5. Refined slaked lime is transported to the bucket elevator through the finished product conveyor, enters the finished calcium hydroxide silo, and then is packaged according to customer requirements.

How to better operate the calcium hydroxide production line

In order to use the calcium hydroxide production line proficiently, the operator needs to undergo special training. In addition to the basic equipment operation, we also need to have an understanding of the theoretical knowledge and equipment maintenance of the calcium hydroxide production line.

When learning the theory of the calcium hydroxide production line, we mainly understand the working principle of the calcium hydroxide production line, the structural composition and key components of the equipment, and secondly, we also need to understand the finished calcium hydroxide products, such as what kind of calcium hydroxide is qualified product, what are its characteristics, etc.

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Details can be accessed here: https://www.ly-gaifeng.com/blog/calcium-hydroxide-production-line.html

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What should I pay attention to in tractor clutch repair?

Between the tractor’s engine and the gearbox, there is a key component that can be used to separate the power from the engine crankshaft to realize the tractor’s parking and shifting. This is the protagonist of our article today: the tractor clutch, the overload protection function of the tractor clutch, can Make the starting of the tractor more stable.

As we all know, the clutch transmits torque by friction. The longer it is used, the more serious the friction damage will be. However, in the normal use of the tractor, the use of the tractor clutch is very frequent. If you do not pay attention to the tractor clutch repair, once the parts are worn out , resulting in the inability to transmit torque reliably, which will affect the normal use of the tractor. Therefore, we need to regularly troubleshoot the tractor clutch and deal with possible problems in a timely manner. Here, we will briefly talk about the tractor. When the clutch is repaired, the maintenance points of each component.

tractor clutch

1. Maintenance of tractor clutch drive plate

The active disc of the tractor clutch, including the clutch pressure plate and the intermediate pressure plate, many manufacturers will use high-quality gray cast iron or ductile iron as the main raw material for these parts. The main damages of the active disc are mostly wear, scratches, burns and cracks on the friction surface; warpage and deformation of the friction surface; breakage of the lugs of the very engaging clutch, and increase of the bearing clearance due to wear; The pin fit gap is loose due to wear, the clutch cover is deformed or cracked, and the window hole is worn.

When the tractor clutch is repaired, the detection of the damage of the active disc is mainly based on visual inspection. The maintenance of the active disc mainly includes the following two points:

(1) If the clutch pressure plate has cracks, defects, or the thickness after grinding is smaller than the limit size, it should be replaced with new parts in time. If there are problems such as ablation, cracking or wear groove depth exceeding 0.5 mm on the surface, or when the plane tolerance exceeds the service limit, the clutch pressure plate can still be used after being smoothed by polishing.

(2) When the matching clearance between the driving disc and the transmission pin is greater than 1.00-1.50 mm, it should be repaired in time.

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Details can be accessed here:https://www.syclutch.com/news/tractor-clutch-repair.html

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What are the vibrating screen models?

In mining operations, vibrating screen is one of the screening equipment that is often used. Nowadays, most of the vibrating screens on the market are linear vibrating screens and circular vibrating screens. These two types of vibrating screens can also be divided into various types according to the screening materials, usage scenarios and output. The output corresponding to the model is basically different. Therefore, the understanding of the vibrating screen model can be directly started from the circular vibrating screen and the linear vibrating screen.

1. Circular vibrating screen

The circular vibrating screen, as the name implies, has a circular running track. Therefore, when the material is screened on the circular vibrating screen, it performs circular motion, which is a new type of multi-layer vibrating screen. Circular vibrating screen is often used in quarries to screen sand and gravel materials due to its fast screening speed, high work efficiency, simple structure, reliable operation and low noise, and of course it can also be used in coal preparation, mineral processing and other industries.

YK series is the most commonly used circular vibrating screen at present. The circular vibrating screen of this series is named according to the number of screen layers and screen size, such as 2YK1548. The motion trajectory is similar to a circle, 15 represents the width of the screen, and 48 represents the length of the screen. Therefore, the meaning of this model refers to a two-layer circular vibrating screen with a screen width of 1500mm and a length of 4800mm. Generally, several layers of sieves can produce several kinds of finished products, and the top layer is the return material.

The processing capacity of YK series circular vibrating screen is between 12-720m/h. The larger the model number, the wider the screen width and the longer the length, and the higher the vibrating screen output. The mesh size of the screen can be determined according to the feeding size of the screening material.

Vibrating-Screen

Commonly used circular vibrating screen models:

2YK1230, 2-layer screen, the screen area is 7.2㎡, and the processing capacity is 12-78m/h;

3YK1230, 3-layer screen, the screen area is 10.8㎡, and the processing capacity is 13-80m/h;

2YK1237, 2-layer screen, the screen area is 8.88㎡, and the processing capacity is 15-86m/h;

3YK1237, 3-layer screen, the screen area is 13.32㎡, and the processing capacity is 16-90m/h;

2YK1548, 2-layer screen, the screen area is 14.4㎡, and the processing capacity is 22.5-162m/h;

3YK1548, 3-layer screen, the screen area is 21.6㎡, and the processing capacity is 22.5-162m/h;

4YK1548, 4-layer screen, the screen area is 28.8㎡, and the processing capacity is 22.5-162m/h.

2. Linear vibrating screen

The characteristics of the linear vibrating screen are high efficiency, simple structure, convenient maintenance, low power consumption, and no dust spillage during operation. It has good screening effect in dry and wet classification and dehydration of medium and fine materials. Therefore, this type of vibrating screen is widely used in light industry, metallurgy, coal and other industries.

When the linear vibrating screen is working, its power source is the vibration of the vibration motor. Under the combined action of the material’s own gravity and the exciting force, the material is thrown up on the screen surface and moves forward in a straight line, and then is screened out through the screen. Various specifications of materials, different specifications of materials, corresponding to different specifications of the discharge port.

The processing capacity of the linear vibrating screen is generally between 10-600t/h, the feeding particle size is not more than 300mm, the screening particle size is relatively fine, and the maximum screening mesh number is 400 mesh, which can screen out 7 kinds of materials with different particle sizes.

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Details can be accessed here:https://www.hsd-industry.com/news/vibrating-screen-model/

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Concrete mixer truck maintenance measures

Concrete mixer trucks are commonly used construction vehicles on construction sites. In terms of maintenance and repair, in addition to meeting the requirements of relevant departments, it is also necessary to do a good job in the maintenance of concrete mixer trucks based on the actual situation of the vehicle.

Maintenance measures for concrete mixer trucks include:

1. Before the concrete mixer truck runs, it is necessary to conduct a comprehensive inspection of the vehicle, mainly to judge whether the components are normal and reliable, whether the bolt connections are tight, and whether the operation is flexible.

2. Whether the lubrication points of various parts are lubricated in time, and whether the refueling places are kept clean.

3. Check whether the hydraulic system and pneumatic system pipelines are not tightly sealed, worn, oil leakage, air leakage, etc. If there is any problem, it should be eliminated in time.

Concrete mixer truck

 

4. The hydraulic pump, hydraulic motor, deceleration bender and other components of the concrete mixer truck should be regularly inspected and maintained according to the requirements of the product manual.

5. Regularly check the operation of the mixing blades of the mixer truck. When there is wear, it should be repaired in time.

6. According to the different service life of the concrete mixer truck, the maintenance of the reducer should be carried out according to the following steps:

(1) Oil change: When the reducer is used for the first time, the oil needs to be changed after 500 hours. After that, the oil should be changed every 1500 hours of operation. After the reducer has been used for one year, no matter how long it has been working, the oil should be changed.

(2) Oil products: The reducers used in concrete mixer trucks are mostly imported reducers, and the gear oil used is mostly GL-5 gear oil for heavy vehicles, with a viscosity grade of 85w/140.

(3) Recommendation: When changing the oil, make sure that the oil temperature is around 60 degrees. After the oil change is completed, it is necessary to check whether the connecting bolts are still tightened. The oil level needs to be checked weekly.

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Details can be accessed here: https://www.ly-cimc-linyu.com/a/news/Concrete-mixer-maintenance.html

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What are the precautions for safe transportation of oil tank trucks

The body of the oil tank truck can be full of flammable materials. If you don’t pay attention to transportation safety, it will bring disaster! The following are the precautions for tanker transportation shared by tanker sales manufacturers. Let’s take a look at it together.

Prevents fires and explosions caused by electrical sparks

(1) All kinds of electrical equipment used in the oil depot and all workplaces must be explosion-proof, the installation must meet the safety requirements, and the wires must not be broken, exposed or short-circuited.

(2) Over the oil depot, it is strictly forbidden to cross high-voltage wires. The distance between the oil storage area and the barreled light oil warehouse and the electric wire must be more than 1.5 times the length of the pole.

(3) For the rails leading to the oil depot, an insulating baffle must be installed in front of the inlet to prevent the electric sparks from flowing into the oil depot from the rails from the external power supply.

oil tank truck

Precautions for Controlling Combustibles

(1) It is necessary to prevent oil spillage from the oil storage container of the tank truck. The running, running, dripping, leaking, and oil spills that occur in the operation of loading and unloading oil products in the tanker should be promptly removed and dealt with.

(2) After the oil tanker unloads the goods, it is strictly forbidden to pour oil, sludge, waste oil into the sewer for discharge, and should be collected and placed in the designated place properly handle.

(3) All flammable substances should be removed from the vicinity of buildings such as oil tanks, warehouses, pump rooms, oil distribution rooms, and oil blending workshops.

(4) Oil-stained cotton yarn, oiled rags, oiled gloves, oiled paper, etc. used for oil tanker maintenance and maintenance should be placed in a covered iron bucket outside the workshop and removed in time.

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Details can be accessed by clicking here:https://www.ly-cimc-linyu.com/a/news/precautions-for-safe-transportation-of-oil-tank-trucks.html

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WHAT ARE THE EFFECTS OF FORGING PROCESS ON FORGINGS?

In forging production, in addition to ensuring the required shape and size of the forging, it must also meet the performance requirements put forward during the use of the parts, which mainly include: strength index, plastic index, impact toughness, fatigue strength, fracture initial and Stress corrosion resistance, etc. For parts working at high temperature, there are also high temperature instantaneous tensile properties, durable properties, anti-deformation properties and thermal fatigue properties.

INFLUENCE OF FORGING ON METAL MICROSTRUCTURE AND PROPERTIES

The raw materials for forging are ingots, rolled products, extruded products and forging billets. Rolled material, extruded material and forging billet are semi-finished products formed by rolling, extruding and forging of ingots respectively. In forging production, using reasonable process and process parameters, the structure and properties of raw materials can be improved through the following aspects:

1. Break the columnar crystals, improve the macrosegregation, change the as-cast structure to the forged structure, and weld the internal pores under suitable temperature and stress conditions to improve the density of the material;

2. The ingot is forged to form a fibrous structure, and further through rolling, extrusion and die forging, the forgings can obtain a reasonable distribution of fiber directions;

3. Control the size and uniformity of grains;

4. Improve the distribution of the second phase (for example: alloy carbides in ledeburite steel);

5. To make the organization get deformation strengthening or deformation strengthening, etc.

Due to the improvement of the above structure, the plasticity, impact toughness, fatigue strength and durability of the forgings are also improved, and then the required hardness, strength and plasticity of the parts can be obtained through the final heat treatment of the parts. performance.

However, if the quality of the raw materials is poor or the forging process used is unreasonable, forging defects may occur, including surface defects, internal defects or unqualified performance.

Other agricultural machinery forgings

INFLUENCE OF RAW MATERIALS ON THE QUALITY OF FORGINGS

The good quality of raw materials is a prerequisite to ensure the quality of forgings. If the raw materials are defective, it will affect the forming process of the forgings and the final quality of the forgings.

If the chemical elements of the raw materials exceed the specified range or the content of impurity elements is too high, it will have a greater impact on the forming and quality of the forgings. Appears hot and crisp. In order to obtain intrinsically fine-grained steel, the residual aluminum content in the steel needs to be controlled within a certain range, such as 0.02% to 0.04% (mass fraction) of A1 acid. If the content is too small, it will not be able to control the grain size, and it is easy to make the essential grain size of the forgings unqualified; if the aluminum content is too much, it is easy to form wood grain fractures under the condition of forming fibrous structure during pressure processing. Tear-shaped fractures, etc. For another example, in austenitic stainless steel, the more n, Si, Al, and Mo are contained, the more anionite phase, the easier it is to form band cracks during forging, and make the parts magnetic.

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Details can be accessed by clicking here:https://www.gold-emperor.com/influence-of-forging-process-on-forgings/

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How to maintain the excavator slewing bearing?

The excavator slewing mechanism includes the following parts: slewing motor, reducer, slewing large ring gear, slewing center section and other components. In the daily operation, the daily maintenance of the excavator slewing mechanism should be done well, especially the excavator slewing bearing, otherwise the work efficiency of the excavator will be seriously affected.

Excavator slewing bearing maintenance

Under normal working conditions (working 8 hours a day), the slewing bearing is lubricated once every 100 hours of operation. Before filling the grease nipple or connecting pipe, remove the plastic plug or screw plug from the oil hole.

Lubricate once a week in tropical, humid, dusty, temperature-variable areas and in continuous operation. New grease must also be added before and after the machine has been stopped for a long time. The raceways must be filled with grease each time they are lubricated until a new oil ring is formed at the seal. When injecting grease, turn the slewing bearing slowly so that the grease is filled evenly.

When the excavator runs abnormally (flooded by water, running in mud for a long time, etc.), the slewing bearing should be maintained: inject the required amount of grease for the slewing bearing for the first time, and then inject half the amount every day for a week. The tooth surface should be cleaned of debris every ten days and coated with grease.

Excavator slewing bearing

Note: Because there are many factors in the comprehensive working conditions, users can choose the best original grease according to their specific requirements.

The hydraulic oil maintenance of the rotary motor can be maintained at the same time as the entire hydraulic system, and the hydraulic oil needs to be replaced every 2000 hours. The gear oil of the rotary reducer needs to be replaced once every 1000 hours.

In daily operation, we need to observe the liquid level of the gear oil of the rotary reducer from the dipstick. In some cases, abnormal loss of lubricating oil will be found. We need to open the observation port of the large ring gear (the bottom of the boom cylinder, the grease filling port) , check whether the lubricating oil leaks into the large ring gear cavity through the sealing ring of the rotary reducer.

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Details can be accessed by clicking here:https://www.excavatorbearing.com/a/bearing-knowledge/excavator-slewing-bearing-maintenance.html

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Crossed Roller Bearing Installation Process

There are two types of crossed roller bearings, one is crossed cylindrical roller bearings, the other is crossed tapered roller bearings; crossed roller bearings have a long history of application outside, but only in recent years. Into the public’s vision, it is widely used due to its own uniqueness and incomparable advantages over other bearings. Many users will have some problems with the installation of crossed roller bearings, such as lubrication, installation, cleaning, etc. Today, I will explain to you, I hope it will be helpful to you.

Preparation before installation

1. Choose grease

Lubrication has an important influence on the operation and life of crossed roller bearings. Here is a brief introduction to the general principles of selecting grease. Grease is made of base oil, thickener and additives. Different types of greases with the same type and different grades have very different performances and different allowable rotation limits. Be careful when selecting them. The performance of lubricating grease is mainly determined by the base oil. Generally, the low viscosity base oil is suitable for low temperature and high speed, and the high viscosity base oil is suitable for high temperature and high load.

The thickener is also related to the lubricating performance, and the water resistance of the thickener determines the water resistance of the grease. In principle, different greases cannot be mixed, and even greases with the same thickener will have adverse effects on each other due to different additives.

2. Cleaning before bearing installation

The bearing surface is coated with anti-rust oil, you must carefully clean it with clean gasoline or kerosene, and then apply clean high-quality or high-speed high-temperature lubricating grease before installation and use. The impact of cleanliness on rolling bearing life and vibration noise is very large. But we don’t want to remind you that closed bearings do not need to be cleaned and refueled.

Bearing installation

1. Thoroughly clean the main shaft, bearing seat or other installation parts, remove oil or impurities, and confirm whether there are burrs or burrs.

2. Install the crossed roller bearing into the shaft or bearing seat: Because it is a thin-walled bearing, it is easy to tilt when it is installed. In order to prevent this phenomenon, please use a plastic hammer to strike evenly while keeping it level, and carefully install the crossed roller bearing into the bearing housing or on the shaft until it is confirmed by sound that the reference surface is not completely close. Do not directly hammer the crossed roller bearing surface and the non-stressed surface. Use pressure blocks, sleeves or other installation tools (tools) to make the bearing evenly stressed, and do not install it through the transmission force of rolling elements.

If the mounting surface is lubricated, the installation will be smoother. If the interference is large, the bearing should be heated to 80~90℃ in mineral oil and installed as soon as possible, and the oil temperature should be strictly controlled not to exceed 100℃ to prevent the reduction of hardness due to tempering and the influence of dimensional recovery. When it is difficult to disassemble, it is recommended that you use the disassembly tool to pull out and pour hot oil on the inner ring carefully. The heat will expand the inner ring of the rolling bearing, making it easier to fall off.

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Details can be accessed by clicking here:https://www.prsbearings.com/a/news/crossed-roller-bearing-installation-process.html

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