WHAT ARE THE DIFFERENCES BETWEEN CALCIUM HYDROXIDE EQUIPMENT AND TRADITIONAL PRODUCTION PROCESSES?

In recent years, with the continuous development of my country’s calcium hydroxide market, the technical indicators of calcium hydroxide products are also constantly improving. The traditional calcium hydroxide production process and the inability to meet market demand and technical indicators have been gradually replaced by calcium hydroxide equipment. Everyone has a lot of doubts about calcium hydroxide equipment. Many people are curious about the difference between calcium hydroxide equipment and traditional production processes? Next, I will introduce you to it.

THE DIFFERENCE BETWEEN CALCIUM HYDROXIDE EQUIPMENT AND TRADITIONAL PRODUCTION PROCESS

GFEX Case

1. PRODUCTION PROCESS

The calcium hydroxide that can be mechanized and produced on a large scale using calcium hydroxide equipment has a much higher product quality than hand-produced products. At the same time, the equipment also realizes automatic control and online real-time monitoring. The entire production line only needs 2 to 3 employees, which saves human resources.

The traditional production process is mainly manual, and the product quality is not very good. It is mainly used in low-end markets such as sewage treatment, ash calcium, and putty powder.

2. CALCIUM HYDROXIDE PRODUCTION

The production of calcium hydroxide equipment can realize large-scale production of calcium hydroxide. The output of a single machine ranges from 3T/h to 20T/h, and different schemes can be completed according to the requirements of users.

The traditional production process is inefficient, and each person does not exceed 1 ton of finished calcium hydroxide during the day. Such production capacity cannot meet the large demand for calcium hydroxide in various industries such as power plant desulfurization, fine chemical industry, pharmaceutical food, petroleum, and paper making.

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HOW TO ADJUST THE FINENESS OF CALCIUM HYDROXIDE EQUIPMENT?

Users who purchase calcium hydroxide equipment production lines usually consult in detail about what standard the calcium hydroxide produced by calcium hydroxide equipment can meet, and purchase corresponding supporting production lines according to their own goals.

At present, the calcium hydroxide powder produced by domestic calcium hydroxide equipment can reach industrial grade use, the fineness is generally 200-400 mesh, and the content is generally 65%-93%. construction and other industries.

The fineness of calcium hydroxide equipment can reach about 325 mesh, and it can produce 6-20 tons of finished calcium hydroxide per hour. If it is produced in 24 hours, it can produce up to 480 tons of calcium hydroxide powder a day, which can meet the high standard requirements of users.

HOW TO ENSURE THE POWDER FINENESS OF CALCIUM HYDROXIDE EQUIPMENT?

For the performance of calcium hydroxide equipment, powder fineness is undoubtedly a very important measure. Users all hope that the purchased equipment can achieve stable powder fineness and ensure powder quality. From the following two aspects to ensure that users buy Equipment to the desired effect and standard.

1. The matching powder selection device is very important. Its main function is to classify and screen the powder processed by the calcium hydroxide equipment, and select qualified finished products. Therefore, for the calcium hydroxide production line, choose the selection that is suitable for your own production line requirements. The size of the powder machine becomes very important.

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What are the factors that affect the quality of desk and chair sets?

There are many kinds of desk and chair sets on the market, the price difference is large, and the quality is also uneven. If you choose cheap ones, the quality cannot be guaranteed. There are many factors that affect the quality. If you want to buy good quality products , we must first understand the factors that affect the quality of desk and chair sets.

Process factors affecting the quality of desk and chair sets

High Quality School Table with Chair

1. Welding wheel diameter

The diameter of the welding wheel determines the diameter of the nugget. As the new welding wheel is ground again and again, the diameter gradually becomes smaller, the contact area between the desk and chair and the steel strip is reduced, the current density is increased, and the pressure on the welding point is increased. Also added, so the diameter of the welding wheel cannot be too small.

2. Welding current

The influence of the welding current of desks and chairs on the heat is a quadratic relationship. As an adjustable parameter, it can be selected according to the thickness of the welded steel strip. The factors that affect the actual current change are the fluctuation of the power supply voltage and the resistance of the secondary circuit. In order to ensure that desks and chairs are not affected by external conditions, it is necessary to adopt a constant current control system.

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How to maintain school desks and chairs?

For students, they naturally hope to use new desks and chairs, but such frequent replacement of new desks and chairs will increase financial expenditures for schools. Besides, steel and wood desks and chairs are of reliable quality and long service life. Longer, regular maintenance can avoid the waste caused by repurchasing new desks and chairs. Therefore, schools should pay attention to the maintenance and maintenance of desks and chairs.

First of all, desks and chairs are generally used in teaching places, and students are the main body of use. Schools should warn students to take care of public property and their own desks and chairs. It is forbidden to scribble on desks and chairs, or even scratch them with sharp objects. , causing permanent scars. The desks and chairs should be handled with care, and violent behaviors, such as smashing and smashing, should be prohibited.

In addition, to stop desk culture, it is not advisable to write poems and draw pictures on desks and chairs. Therefore, it is necessary to build bricks from the overall quality of students and school education.

At present, the design of student desks and chairs needs to consider many factors. The designed and produced student desks and chairs must meet the most basic three performances, and such student desks and chairs can be qualified.

High Quality School Table with Chair

1. Practical performance

This is the primary condition for the design of desks and chairs. The design of student desks and chairs must meet his direct use and meet the needs of students. This is the most basic. If the needs of students cannot be met, no matter how beautiful the appearance is Just empty shelves, meaningless.

2. Comfortable performance

This is the demand for high-quality life now. The comfort of student desks and chairs is also a reflection of the value of desks and chairs. The designed student desks and chairs must conform to ergonomics, and can also have detailed observation and analysis of life. In order to design comfortable products.

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How to maintain the slewing bearing of the crane?

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

When carrying out maintenance work on the slewing bearing of the crane, first of all, pay attention to the danger of being dragged into the slewing pinion, crushing and shearing. When performing the following tasks, make sure that no maintenance personnel are in the main boom, the danger zone between the boarding car and the reel, or between the disembarking and reel, when the engine is started to perform the necessary slewing and luffing operations. Hazardous areas, except for the crane operator (in the cab).

Check the bolts of the slewing bearing

slewing bearing of the crane

1. Before each crane operation or at least once a week, visually check the bolts on the slewing bearing;

2. After the slewing bearing works for 100 working hours, check whether the bolts are loose, and check again at the 300th working hour; after that, check every 500 working hours; the inspection interval should be shortened under severe working conditions. 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. The factory or professional technicians will check and decide whether to disassemble and inspect immediately;

3. Fill the slewing bearing 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 bearing

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

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Reasons and solutions for inflexible operation of excavator slewing bearing

The slewing bearing is an indispensable part of the excavator slewing device. Whether the excavator can turn left or right during work is inseparable from the credit of the slewing bearing. The slewing bearing is mainly used to support the quality of the upper body and bear the working load. Due to the heavy load operation of time and the influence of the environment, the phenomenon of inflexible operation will appear after a long time, which will cause a lot of trouble when we use it, and there is no way to work well.

Reasons for inflexible operation of excavator slewing bearing

Reason 1: The slewing bearing gear is deformed or broken, causing jamming or inflexible movement.

Solution: Repair the gear, re-weld the gear.

Reason 2: There is a problem with the sealing system of the slewing bearing, which will enter debris, such as stones, sand, etc., resulting in stuck or insensitive movement.

Solution: Clean up all the debris.

Reason 3: The newly purchased product is inflexible in idling. Check the production date of the slewing bearing. If the time is long and the climate is cold, it may be mixed with salt mist in the raceway, which will cause the rotation resistance to multiply and make the slewing bearing run poorly.

Remedy: If it can run after afterburning and there is no other abnormality, it can be used normally.

Reason 4: overload operation, resulting in inflexible movement of the slewing bearing.

Corresponding solution: The workload needs to be reduced.

Reason 5: The position of the slewing bearing is not flat.

Solution: Need to change the platform position and work in a flat position.

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Scrap standard and service life of tower crane slewing bearing

All machines will experience wear and tear after a long period of use. When the parts exceed the service life or are damaged beyond repair, they should be scrapped and replaced. The tower crane slewing bearing is prone to failure and damage in the long-term outdoor harsh environment and high-load operation, so to what extent does it meet the scrapping standard of the tower crane slewing bearing?

Scrap standard of tower crane slewing bearing

slewing bearing

1. Slewing bearing raceway ring and rolling element wear and scrap

The wear of raceway rings and rolling elements is one of the common forms of scrapped slewing bearings. When there is raceway pitting on the surface of the slewing bearing, surface metal peeling and overall wear, abnormal noise, rolling element jamming and excessive clearance between the raceway rings will occur in the tower crane during operation, resulting in vibration and local impact. With the development of the state, the slewing resistance will continue to increase and the slewing function will be lost.

2. The slewing bearing cage is damaged and scrapped

In order to avoid mutual friction between the rolling elements, the tower crane slewing bearing usually adds a spacer cage between the rolling elements. The material of the cage is generally copper, plastic, powder metallurgy or mild steel. During the working process of the bearing, the cage does not transmit the load, but it moves with the rolling elements. When the cage is damaged or broken, there will be a sharp and ear-piercing abnormal sound. As the broken body of the cage is pushed and rolled by the rotating rolling body, it will cause serious damage to the raceway ring and the rolling body. At this time, the slewing bearing meets the scrap standard and can be replaced.

3. The slewing bearing gear teeth are damaged and scrapped

The gear meshing methods of tower crane slewing bearing include external tooth meshing and internal tooth meshing. When the surface of the gear teeth is excessively worn, cracks and broken teeth occur. The tooth side clearance of the tower crane slewing bearing gear teeth increases, causing the slewing bearing to lose its function immediately when the tooth is broken, and it cannot be repaired. At this time, the scrapping standard of the tower crane slewing bearing is reached.

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Is the surface roughness of the slewing bearing as small as possible? How to choose?

Is the surface roughness of the slewing bearing as small as possible? Surface roughness refers to the small spacing and the unevenness of small peaks and valleys that the machined surface has. The roughness of the bearing surface may affect the wear resistance, stability, fatigue strength, stability and other properties of the bearing. Generally speaking, the smaller the roughness of the bearing surface, the better, but it should be determined according to the equipment use requirements and process accuracy.

The surface roughness of the slewing bearing is not as small as possible

Slewing Bearings

Is the surface roughness of the slewing bearing as small as possible? It can be analyzed from the following aspects:

1. Physical properties of materials

The surface roughness of the bearing is often represented by Ra. Generally speaking, from the working principle, we hope that the smaller the surface roughness of the slewing bearing, the better. Generally, the higher the bearing tolerance accuracy level, the better the surface quality and the finer the workmanship. However, two surfaces that are too smooth are prone to gluing (exchange between the same or similar materials, which is similar to the “dyeing phenomenon” in our life, but it belongs to the exchange of metal substances here), while the surfaces that are too rough are prone to gluing. Under the action of force, the surface is prone to peeling off (that is, what we often call wear).

2. Processing cost

Theoretically, the smaller the value of the surface roughness of the slewing bearing, the better, the smaller the roughness, the smoother the surface and the more beautiful the appearance. However, the size of the roughness is determined by the machining process and other factors, such as the friction between the tool and the bearing surface, cutting, and high-frequency vibration in the process.

However, the smaller the surface roughness, the higher the processing cost. Whether the use cost of the part matches the consumption speed and the profit of the equipment production output value. These all need to be considered. Some spare parts do not have high requirements on the roughness of the bearing surface. Excessive pursuit of the surface roughness will affect the economy of processing.

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How to increase the output of vibrating screen?

Mining vibrating screen is a kind of large-scale screening equipment, commonly used in the mining industry, etc. The use of this vibrating screen to screen materials generally requires relatively large output. In use, we also hope that the larger the output of the equipment, the better. Since the models and specifications produced by each vibrating screen manufacturer are different, the output of each equipment is also different, but this can be improved by some methods, so how to increase the output of the vibrating screen?

The method of increasing the output of vibrating screen

High frequency dehydration vibrating screen

1. Improve the opening rate of the screen mesh

Because the ore is relatively large in mesh, a metal woven mesh or punching plate with a large aperture is generally used. If you want to increase the output, you can also replace the screen mesh with a larger aperture than the previous one for production. The high opening ratio is beneficial to improve the screening effect; but the disadvantage is that it is not as high as the previous screening. Therefore, once the output needs to be increased, it will inevitably affect the screening accuracy.

2. Adjust the feeding method

A distribution device can be installed at the feed port of the linear vibrating screen, so that the material can be evenly fed to the screen surface to achieve the requirement of increasing the output, which is of great help to improve the screening output of the linear screen. If the distributor is added unconditionally, attention should be paid to manual feeding to ensure uniform feeding. When feeding, the cloth should be evenly distributed.

3. Increase the screening area

The screening area of ​​the linear vibrating screen can be achieved by increasing the length and width of the screen surface. The width of the screen surface determines the processing capacity of the sieve. The wider the screen surface, the greater the output; the length of the screen surface determines the screening efficiency. The longer the screen surface, the longer the material screening time, and the higher the efficiency. After the size is reduced, the sieving efficiency improves little or not at all. At this time, increasing the length of the sieve surface will only increase the volume and weight of the sieve.

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How to deal with abnormal operation of vibrating screen exciter?

The vibrating screen exciter is an important component that utilizes mechanical vibration. The exciter can make the excited object obtain the vibration amount of the form and size, so as to conduct vibration and strength tests on the object, or calibrate the vibrating screen and sensor.

The vibrating screen exciter can also be used as an excitation component to form a vibrating machine to realize the conveying, screening, compacting, forming and tamping of soil sand and gravel of materials or objects.

DE60A

1. Damage to the vibration damping system

For example, the failure of the vibration damping spring or the accumulation of materials under the screen will make the vibration damping system uncoordinated, resulting in damage to the vibrating screen exciter.

2. Installation quality problems

Improper adjustment of the exciter gap during the installation process will cause errors in the axial radial joints between the exciter and the motor, and the universal coupling, as well as the relative position of the exciter eccentric block. Excessive vibration of the vibrator produces high temperature, which seriously affects the normal operation of the vibrating screen.

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