What are the characteristics of slime centrifuge?

A slime centrifuge is a machine that uses centrifugal force to separate components from a mixture of liquid and solid particles or a mixture of liquid and liquid. Mainly used to separate solid particles and liquids in suspension; or to separate two incompatible liquids in emulsions with different densities; can also be used to remove liquids in wet solids; especially ultra-high-speed tube separators can also separate different densities using the different sedimentation velocities of solid particles of different densities or particle sizes in the liquid, some decanter centrifuges can also classify solid particles according to density or particle size.

Clean Coal Centrifuge

Its working characteristics are as follows:

1. Centrifugal dehydration: The process of separating liquids and solids by centrifugal force. Two different principles can be used: centrifugal filtration and centrifugal sedimentation.

2. Centrifugal filtration: the processed rotating material is added to the surface of the rotating cone sieve. Under the action of centrifugal force, the solid adheres to the surface of the screen and rotates with the rotor, and the liquid is discharged through the material gap and the screen gap. Dehydrate clean coal.

3. Centrifugal sedimentation: Add coal slime water to a simple rotor, under the action of centrifugal force, the solid settles in the liquid, and the sediment is further squeezed out of the water by centrifugal force, which is mainly used for the dehydration of coal slime.

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Details can be accessed by clicking here:https://www.hsd-industry.com/news/characteristics-of-slime-centrifuge/

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WHAT ARE THE PERFORMANCE OF CALCIUM HYDROXIDE PRODUCTION LINE

The calcium hydroxide production line adopts blades made of special materials and mixing methods, so that the quicklime and water can be mixed evenly and fully reacted. function, it is designed to act to break up the agglomerates created during the reaction.

Our calcium hydroxide production line equipment is designed and manufactured in strict accordance with ISO9001 international quality management system certification, ISO14001 international environmental management system certification, and ISO18001 employee health management system certification indicators. The company has strong technical force and has a number of technical patents.

In the process of development, it has continuously communicated and cooperated with relevant disciplines, research institutions and universities to continuously develop, optimize and design new products. Our calcium hydroxide production line has the following performance advantages:

GFEX Case

Add thermal conversion catalytic system. Use its own thermal energy to heat the digestion water, accelerate the digestion reaction, recover part of the water vapor, and reduce the discharge of water vapor.

The F series integral reducer is adopted, and the main shaft is a through-shaft design. Avoid coaxiality errors causing unbalanced equipment operation.

The leaves of the digester are arranged in a disordered, staggered arrangement. Avoid problems such as torque fluctuations caused by uneven material.

The digestion dust collector adopts the integrated design of digestion and dust removal. The structure is more compact, and the dust removal powder (ultrafine powder) is directly discharged into the tertiary digestion and then enters the powder selection equipment.

The screw conveyor adopts variable pitch conveying. Reduce the conveying resistance and reduce the wear of the screw blades.

The internal blades of the screw conveyor are extruded with NM400 wear-resistant steel plate to ensure the service life.

The interior of the digester is designed with NM400 replaceable stirring gear to reduce equipment wear.

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

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What are the process control systems of HD series square bottom machine?

High-speed automatic square-bottom machine can be referred to as HD series square-bottom machine, which refers to the square-bottom machine produced by high-tech automatic assembly line. There are many main functions of the process control system of high-speed automatic square-bottom machine. What are the PCS of the square bottom machine and what functions does it have?

HD series square bottom machine process control system

HT120-IA Paper Tube Machine

1. Opening quality control

Automatically detect the quality of the opening of the bag tube, and if the unqualified bag tube is opened, the bottom of the bag will not be glued, and it will be automatically removed at the exit of the main machine, and the bottom of the bag will no longer be compressed, which creates favorable conditions for manual renovation and reduces the cost of the bag tube. waste.

2. Empty bag measurement and control

It is one of the measures to ensure the efficient operation of the equipment by automatically judging the empty bag (passing without bag), blowing off the valve opening, and not applying glue, avoiding the possible shutdown caused by the invalid valve plate and gluing.

3. Traffic jam prediction and automatic braking

Once the square bottom machine is in serious traffic jam, it will be difficult to deal with, which will result in a long time of parking. This PCS has a unique traffic jam prediction function, which can quickly and automatically brake when there is a traffic jam sign, which significantly shortens the traffic jam processing time and improves the working efficiency of the equipment. At the same time, this function also has an important protective effect on the mechanical safety of the equipment.

Details can be accessed by clicking here:https://www.lyhuatianm.com/products-information/process-control-system-of-square-bottom-machine.html

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How does the tractor clutch system work?

The clutch generally exists in the gearbox of the tractor and plays the role of power separation. In a fuel vehicle, the heart of the power is the engine. When the power output from the engine is to be transmitted to the wheels, it must pass through the gearbox and the drive shaft in the middle. We can call this transmission chain the power transmission system. Then the clutch is located at the head end of the gearbox, and when it is engaged, it allows the transmission system to transmit power smoothly; when the clutch disengages, it cuts off the power transmission from the engine to the wheel end.

So why do you need to cut off the power from the engine to the wheel end? This is mainly related to the working characteristics of the engine. Like a normal engine, there will be a minimum speed requirement, that is, the lowest crankshaft rotation speed for the engine to work smoothly. For example, the minimum speed of the four-cylinder engine is about 500 rpm or more, and the three-cylinder engine is about seven or eight hundred rpm. Below this value, the engine is likely to stall. Therefore, when our car is stationary, the engine should also be kept above this minimum speed. At this time, it is necessary to have a power separation device to realize the connection and separation of power.

On the whole vehicle, the tractor clutch system can be roughly divided into two parts: the control system and the clutch. The control system is the clutch pedal that we operate with our feet, plus a set of transmission devices to transmit the action of the clutch pedal to the clutch. The clutch is a device used to realize the transmission and interruption of engine power.

K series

Let’s talk about several forms of the clutch system. Among them, the control system generally has three forms, rod-type control system, zipper-type control system and hydraulic control system.

Like the rod system, which can be seen on previous tractors and old heavy trucks, the transmission device in their middle is composed of connecting rods. The transmission efficiency of this system is relatively low, the arrangement of the connecting rod is also relatively difficult, the space required is relatively large, and the stroke of the entire pedal will be relatively large. Therefore, the application of the stick control system is relatively limited.

The second type is the zipper control system. It transmits the operation of the pedal to the clutch through a zipper in the middle. This is a similar principle to the handbrake braking mentioned in the previous explanation of the braking system. Although the zipper system is more flexible in terms of spatial arrangement, its transmission efficiency is not high, and its service life is relatively short.

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Details can be accessed by clicking here:https://www.syclutch.com/personal/principle-of-tractor-clutch-system.html

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What should I pay attention to when replacing the slewing bearing?

There are various slewing bearing failures in production activities, such as crane slewing bearing maintenance, excavator bearing slewing bearing and crane slewing bearing maintenance, but in order to ensure that the construction period is completed on time, the slewing bearing has to be replaced, and it will return to normal in a short time. Work. So what are the precautions in the process of replacing the slewing bearing, let’s take a look at it in detail.

Precautions for slewing bearing replacement

1. When it is difficult to disassemble the slewing bearing on rotary table equipment such as excavator slewing bearing, crane slewing bearing and crane slewing bearing, it is generally due to the excessive deformation of the base or the base, which leads to distortion, and the bolts are difficult to rotate normally;

Slewing Bearing

2. The sealing loss of the slewing bearing means that the channel of the slewing bearing is blocked;

3. The lubricating oil channel cannot be refueled, and the slewing bearing is stuck;

4. The cracking sound of the slewing bearing means that the isolation block, steel ball, roller or channel loss is large;

5. When the slewing bearing parts are disassembled, if the taper pin is not easy to be taken out, generally speaking, the head is reversed; when the taper pin is difficult to pull out through the threaded hole, the next steps are:

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Details can be accessed by clicking here:https://www.prsbearings.com/a/news/precautions-for-slewing-bearing-replacement.html

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How to maintain the slewing bearing of the truck crane?

The crane slewing bearing is an important “joint” of the crane, so its maintenance is very important. So how to maintain the crane slewing bearing?

When carrying out maintenance work, pay attention to the danger of being dragged into the rotary pinion, crushing and shearing. When performing the following tasks, the relevant personnel shall ensure that when starting the engine to perform the necessary slewing and luffing operations, any maintenance personnel are not in the danger zone between the main boom, the loading vehicle and the roller, or between the vehicle and the roller. Danger zone between crane operators (in the driver’s cab).

Check the bolts of the slewing bearing

1. Visually inspect the bolts on the slewing bearing before each crane operation or at least once a week;

2. After the slewing bearing has worked for 100 working hours, check whether the bolts are loose, and check again after 300 working hours; after that, check every 500 working hours; in severe working conditions, shorten the inspection interval. If the bolts are found to be loose during the inspection, please stop the construction operation, and immediately contact the local after-sales service department, and the factory or industrial technicians will check and decide whether to disassemble and inspect immediately;

crane slewing bearing

3. The slewing bearing should be filled with lithium-based grease before installation;

4. When replacing the bolts, wipe the bolts clean, apply thread tightening glue, and then tighten them; use the crane according to the requirements of the operation manual and the lifting performance table, or check the tightening bolts regularly as required, so as to avoid the fatigue damage of the bolts.

Routine inspection of slewing bearings

1. Regularly check the flexibility of the rotation; if noise or impact is found, it should be stopped immediately for inspection, troubleshooting, and dismantling and inspection if necessary;

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

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WHAT ARE THE FORGING PROCESSES OF SPECIAL ALLOY FORGINGS?

Special alloy forging is much more difficult than ordinary carbon steel and low-alloy structural steel. To produce special alloy forgings with geometric dimensions and metallurgical quality that meet the requirements, corresponding technical measures must be taken according to different characteristics. These measures are mainly Including process measures, forging and die design measures, quality control measures, testing of forging performance (based on selection of thermodynamic parameters), simulation of forging process, first piece trial forging, etc. Among the above measures, the process measures that need to be taken are described as follows:

1. Reasonably select the temperature, heating speed and holding time of the blank into the furnace

For special alloys with low thermal conductivity (especially large-sized billets), they should be heated at a low speed with the furnace or preheated in the furnace at 800 ° C ~ 850 ° C and held for a period of time, rather than directly heated in the furnace at the initial forging temperature, and then heated It is heated to the initial forging temperature or transferred to a high temperature furnace at the initial forging temperature; the holding time at the initial forging temperature depends on the alloy, which is generally several times longer than that of alloy structural steel.

Other blanks of aluminum, magnesium, copper and their alloys with higher thermal conductivity than steel can be directly put into the high-temperature furnace, the heating speed can be accelerated and the holding time can be appropriately shortened.

Harvester pusher

2. Properly select the degree of deformation

In view of the characteristics of high alloying degree of special alloys, serious macrosegregation of ingots and forgings, low plasticity and wide critical deformation range, in the forging process, it is necessary to strictly control the degree of deformation of each fire and even the degree of deformation of each stroke of the equipment (deformation degree If it is too large, it may be forged and cracked, and if the degree of deformation is too small, it may fall into the deformation zone, resulting in local grain growth and uneven structure).

3. Strictly control the final forging temperature

In view of the characteristics of high recrystallization temperature and obvious cold work hardening tendency of special alloys, it is necessary to increase or greatly increase the final forging temperature. The forging temperature is about 300°C higher.

4. Reasonably choose the working speed of the forging equipment

For some special alloys that are sensitive to strain rate and slow recrystallization speed, hydraulic presses, mechanical presses and screw presses with lower loading speed should be selected for forging; for high-speed steels with serious mesh fractures, in order to completely crush them For two-shaped broken objects, a forging hammer with high working speed and strong impact force should be selected for forging.

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

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What are the factors that affect the fuel consumption of concrete mixer trucks?

In the operating cost of concrete enterprises, the proportion of fuel consumption of concrete mixer trucks is as high as 53%. How to reduce fuel consumption has become an urgent problem for enterprise managers to improve. In this regard, the tank car sales manufacturers have made a detailed introduction to the important factors affecting fuel consumption, hoping to help you better.

Factors affecting the fuel consumption of concrete mixer trucks:

concrete mixer truck

The fuel economy factor of the mixer truck 1: The use of the mixer truck

The main factors affecting the fuel economy in terms of use are to keep the technical condition of the concrete mixer truck in good condition and the correct driving operation. Mainly as follows:

a. Correct technical maintenance and adjustment

The adjustment and maintenance of the mixer truck will affect the performance of the engine and the driving resistance of the mixer truck, and have a considerable impact on the fuel consumption per 100 kilometers. Therefore, the correct technical maintenance and adjustment will have a great impact on the fuel economy of the mixer truck.

First of all, keep the engine in good technical condition. Maintain and inspect the oil supply system, air intake system and lubrication system to prevent oil leakage, and timely check the precipitation and impurities in the filter. When the air filter is not smooth, the fuel consumption will increase by about 3%. “Three filters” for maintenance to maintain the correct temperature of the engine cooling system.

In terms of chassis, it is necessary to strengthen the maintenance and adjustment of each assembly to maintain proper sliding ability and reduce fuel consumption. The sliding ability of the cement tanker is often evaluated by the sliding distance, and the sliding distance can be used to check the technical condition of the chassis.

The positioning of the front wheel of the mixer truck, the adjustment of the gap of the brake, the tire pressure, the tightness of each bearing, the clearance of the moving friction part and the lubrication quality will have a great impact on the movement resistance of the mixer truck, and must be adjusted and maintained according to regulations.

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Details can be accessed by clicking here:https://www.ly-cimc-linyu.com/a/news/factors-affecting-the-fuel-consumption-of-concrete-mixer-trucks.html

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How to prevent spontaneous combustion of oil tank truck in summer?

Oil tank truck is a special transportation tool for loading oil products. Because one of the characteristics of oil products is that it can ignite and catch fire at high temperature, oil tank trucks are generally made of good materials to ensure that the oil products inside can be avoided. adversely affected by external factors. So how should a oil tank truck prevent spontaneous combustion in the summer when the temperature is very high?

How to prevent spontaneous combustion of oil tanker in summer

oil tank truck

1. Do not modify without authorization

Every part and structure of the tanker has been specially designed, and it has also undergone various tests to ensure safety. However, if the tanker is modified without authorization during use, it may be For example, the modified circuit and equipment used do not match the power and capacitance, which will lead to fire and spontaneous combustion.

2. Do a careful inspection

Because the temperature in summer is too high, especially when exposed to the sun at noon, the ground temperature can even be as high as more than 50 degrees Celsius. In this case, if the oil tanker is loaded with oil products, the driver must do it before leaving the car. It is necessary to conduct a comprehensive inspection to ensure that there are no abnormalities in the electrical appliances and wiring of the tanker, as well as the fuel supply system. In addition, a fire extinguisher that has undergone safety monitoring is also required.

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Details can be accessed by clicking here:https://www.ly-cimc-linyu.com/a/news/summer-oil-tank-truck-spontaneous-combustion.html

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How to choose the right storage shelf?

The role of storage shelves in the logistics warehouse is very important, which not only affects the production efficiency of the enterprise, but also affects the management efficiency of the warehouse. The premise of how to effectively use storage shelves is to choose a racking system that suits you, so how do we choose a suitable storage rack?

First, we need to understand the principles of warehouse shelf design

Mobile carts

1. Design principles of warehouse shelves

1. Increase the storage space and maximize the use of space. Every enterprise warehouse has its fixed cost. How to maximize its economic benefits in this space is an important principle of warehouse shelf design.

2. Cargo-oriented, in line with the principle of storing goods

In the final analysis, warehouse shelves are shelves for storing goods. Naturally, warehouse shelves suitable for storing goods should be designed. Therefore, it is necessary to have a comprehensive understanding of the cargo itself, including data such as shape, size, and weight. The data can be provided by the warehouse or measured on-site by the shelf supplier.

3. Fully understand the warehouse environment and related equipment principles

(1) Warehouse structure: including warehouse area, warehouse type, warehouse channels, warehouse effective total height, warehouse column position, warehouse floor, warehouse fire-fighting facilities, etc.;

(2) Related equipment: forklifts, stackers, elevators, etc. It should be noted that the forklift needs to know the required aisle, turn length, etc.

4. The principle of effective circulation of goods and effective management

(1) The management method of goods: carefully listen to the purchasing enterprise’s management method of goods, and formulate a plan for the reasonable arrangement of warehouse shelves;

(2) Mode of goods circulation: including manual or mechanical handling of goods, aisle position, first-in, first-out, whole-in, whole-out, etc.

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Details can be accessed by clicking here:https://www.etegreen.com/blog/storage-shelf-choose/

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