As a large-scale crushing equipment, the high-pressure roller mill is usually installed on site after the components are assembled in the workshop. The roller, as the main crushing component of the high-pressure roller mill, has stricter requirements in terms of assembly and installation. , The following briquetting machine manufacturers have sorted out the installation steps of the high-pressure roller mill rollers and roller sleeves for your reference.

Assembly of high pressure roller mill rollers

The assembly and installation of the high-pressure roller mill rollers are mainly divided into two stages. The first is to install the roller sleeve on the roller core in the workshop. Usually, the burner is hot-loaded. After the roller sleeve is hot-installed, it is installed after natural cooling. Bearings; the second stage is the overall transport of the rollers and the installation of the rollers on the equipment.


1. Roller sleeve installation steps

(1) Before assembling, measure the inner diameter of the roller sleeve and the outer diameter of the roller core. The inner diameter of the roller sleeve is checked with an inner diameter micrometer. The graduation value is 0.002mm. The outer diameter micrometer suitable for this roller core is 1000mm~ 1500mm, the division value is 0.01mm, the division value is too large, the equipment comes with a special tool for measuring the roll core, the measurement is divided into three parts: upper, middle and lower, and each part is divided into three points A, B, and C. The average value of the measured data is taken. The inner diameter of the roll sleeve is smaller than the outer diameter of the roll core by 0.2mm~0.5mm.

(2) Use kerosene to clean the anti-rust oil on the roller core, there should be no burrs on the roller core, then erect the roller core on the erected bracket, adjust the verticality of the roller core with a level ruler, and wipe a small amount of lubricating oil.

(3) Assemble the roller sleeve after the adjustment of the roller core. Before hoisting, wipe the heating interior with acetone, hoist it away from 10cm, adjust the levelness of the roller sleeve with a spirit level, and quickly set it on the roller core after the adjustment is qualified.

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As the name suggests, the valve bag packaging machine is used to produce valve bags. Generally speaking, the main operating procedures are mainly divided into two parts, namely pre-production inspection and packaging. If you are familiar with these two parts, you will be familiar with how to operate, but during operation, Some things need to be paid attention to, otherwise problems are prone to occur.

1. Check

(1) Check that the selector switch is in the manual position before power-on;

(2) After power-on, observe that the weighing instrument is at the normal zero position;

(3) Check that the pressure of the control gas source is 0.5mpa, and the pressure of the fluidizing gas source is 0.05mpa.

HT120-IA Paper Tube Machine

2. Packaging

The selector switch is switched to the automatic position, the packaging bag is clamped, and the packaging machine automatically completes the following functions: opening the feeding butterfly valve → closing the feeding butterfly valve → start of fluidized discharge → end of fluidized discharge → lift up the bag clamping cylinder → turn over the bag → Next cycle.

Manual: for manual discharge and reset;

Automatic: normal packing;

Clearance: used in the last few packs or when the material is blocked;

The meaning of the indicator light:

(1) The feeding indicator light is on, indicating that the feeding butterfly valve has been opened, and the material enters the fluidization bin of the valve bag packaging machine from the large silo.

(2) The discharge indicator light is on, indicating that the feeding butterfly valve has been closed, the fluidization valve and the fast and slow discharge valve have been opened, and the material enters the packaging bag from the fluidization bin.

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The clutch disc is a composite material with friction as its main function and structural performance requirements. Tractor friction materials are mainly used to manufacture brake friction discs and clutch discs. These friction materials mainly use asbestos-based friction materials. With the increasing requirements for environmental protection and safety, semi-metal friction materials, composite fiber friction materials, and ceramic fiber friction materials have gradually appeared.

Since friction materials are mainly used in the manufacture of brake train and drive train parts on tractors, a sufficiently high and stable friction coefficient and good wear resistance are required. So how do we judge the performance of the clutch friction disc? In response to this problem, the tractor clutch manufacturer gave us a detailed explanation.

1. Appropriate friction coefficient

The friction coefficient is the most basic parameter of the friction material, which determines the basic braking torque of the brake disc. The national standard strictly requires manufacturers to indicate the coefficient of friction on the packaging. The friction coefficient must be appropriate. Too high will cause wheel lock, direction loss and burning during braking, while too low will result in too long braking distance.

2. Reliable security

Brake discs will generate instantaneous high temperature when braking, especially at high speed or emergency braking. At high temperature, the friction coefficient of the friction disc will decrease, which is called thermal recession. The level of thermal decay determines the safety in high temperature conditions and emergency braking.

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Shelves are indispensable storage equipment in all walks of life. As a shelf user, how should you maintain the shelves and what are the ways to extend the shelf life? In response to these, the shelf manufacturer gave us a detailed explanation, let’s take a look!

Ways to extend shelf life

Industrial racking

1. Cleaning of storage shelves

Frequent cleaning of the shelves will prolong the service life of the shelves. Use a slightly damp rag to wipe gently, as long as there is no dust on the surface. Washing the shelves with water will easily oxidize the surface of the shelves and greatly shorten the service life of the shelves.

2. Rated load of the rack

For shelves with different load capacities, pay attention to the rated layer load of the shelves, try to place the goods evenly, and do not stack heavy goods to prevent the laminates from deforming and affecting the service life.

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The valve bag packaging machine is an automatic packaging machine designed for various fine powder or ultrafine powder materials with low bulk density, strong air affinity, and excellent or poor self-flow.

The working principle of valve bag packaging machine:

HD100-IB Square Bottom Machine

1. The valve bag packaging machine uses the motor as the power source to drive the impeller in the discharge seat to rotate smoothly to achieve uniform feeding;

2. The sensor measures the weight of the material in the bag and inputs the measurement signal into the microcomputer. When the filling weight requirement is met, the microcomputer outputs the signal, and the sealing cylinder extends into the working state to seal the discharge port;

3. At the same time, the pull rod of the electromagnet moves up, and the material bag falls, so as to realize quantitative and rapid packaging of loose materials;

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Calcium hydroxide is widely used in industrial production and life, but we often find that the effect of calcium hydroxide in use is not in line with the routine, so the deterioration of calcium hydroxide has become a problem that needs urgent attention. How to test calcium hydroxide Whether it has deteriorated, and the reasons for the deterioration of calcium hydroxide, we have introduced the following details, let’s find out together!


1. Hydrochloric acid identification method

Take out some calcium hydroxide and add enough hydrochloric acid. If there is gas, it means that the calcium hydroxide has deteriorated.

2. Water identification method

Another method introduced by calcium hydroxide manufacturers is that after adding sufficient water, there are still insolubles, which also means that calcium hydroxide has deteriorated, because calcium carbonate is insoluble in water.

3. Carbon dioxide identification method

Calcium hydroxide is easily hardened with carbon dioxide in the air to form calcium carbonate. Therefore, we only need to determine whether there is calcium carbonate in the calcium hydroxide powder to know whether it has deteriorated.


calcium hydroxide​​1. The temperature is too high

The reason for the deterioration is temperature, and increasing the temperature can cause thermal cracking or thermal cross-linking of calcium hydroxide. But the basic effect of heat is activation. Improve the oxygen diffusion rate and activate the oxidation reaction, thereby accelerating the oxidation reaction rate of calcium hydroxide, which is a common aging phenomenon – thermal oxygen aging.

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Row of desks and chairs are more common in university campuses and some multimedia classrooms. These desks and chairs are generally used for students to take large classes, which is suitable for classrooms with a large number of students. Although students who use such desks and chairs Most of them are college students, and they are already adults, but they still need to pay attention to details when choosing desks and chairs. To ensure the safety of use, what should be paid attention to when choosing a row of desks and chairs?

1. To have retractable function

The use of rows of desks and chairs is generally to make good use of the space of the lecture hall, so choose rows of desks and chairs. However, when choosing, we should choose some rows of desks and chairs with retractable functions, which can also maintain the neatness and aesthetics of the amphitheatre.

In addition, it will be more convenient for students to use, so when choosing a row of desks and chairs, the functional choice is very important to ensure that it can bring students a comfortable experience, create a high-quality learning environment, and improve students’ learning efficiency.

School Bench Table

2. Ensure security

After all, the use of rows of desks and chairs is for students, and the safety of students in schools has always been a concern of the public. Therefore, when choosing rows of desks and chairs, we need to pay attention to their safety.

The safety of row desks and chairs is mainly reflected in the safety of their materials and structure. Therefore, we need to pay attention to these two aspects when choosing row desks and chairs. They must be safe and environmentally friendly. Firm and stable to avoid endangering the health of students.

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The slewing drive can be applied to the main engine that does circular motion, such as crane turntable, rotating machinery, and other machines that perform circular work.

Slewing drive can be widely used in the field of construction machinery represented by aerial work vehicles and truck cranes, as well as in the field of new energy represented by solar photovoltaic power generation and wind power generation, as well as other fields of automation, machine tool manufacturing, aerospace communications, etc. It can be said that this product The market potential is huge.

1. The field of beam transport vehicles

The core components of the traditional beam-carrying slewing assembly mostly use traditional slewing bearing products. Since the slewing bearing does not have an outer casing, the corrosion resistance is not ideal. For the steering system that relies on hydraulic cylinders to push the tires, the The range of rotation angles is also greatly limited.

VE Series Slewing Drive

2. Field of aerial work vehicles

Aerial work vehicles are an important application area of ​​slewing drive. Usually, aerial work vehicles require the main engine to have a high safety factor. The high safety of slewing drive (self-locking of worm gears) is the choice of the majority of users as accessories for aerial work platforms. An important factor; on the other hand, the worm gear transmission has a larger transmission speed ratio, which improves the safety factor of the main engine and also omits a set of worm gear reducers for the main engine, thereby reducing the manufacturing cost of the main engine.

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The vibrating screen is one of the indispensable equipment in the coal mine production line. The working efficiency of the vibrating screen also affects the production efficiency of the coal mine production line. As an important screening equipment, the screening effect of the vibrating screen will affect the use value of the product. Therefore, it is very important to choose the appropriate vibrating screen equipment. Here are some factors to consider when choosing a vibrating screen:

First, the characteristics of screening materials

When selecting a vibrating screen, the characteristics of the materials to be screened should be considered, including the content of the material under the sieve, the content of the difficult-to-screen particles, the moisture content of the material, the shape and specific gravity of the material, and the content of clay and other characteristics.

Linear Vibrating Screen

Second, the structure of the vibrating screen

When selecting a vibrating screen, factors such as the screen area, the number of layers, the shape, size and area ratio of the screen hole, as well as the movement mode, vibration frequency and amplitude of the vibrating screen should also be considered.

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More and more companies start to use high-pressure grinding rolls for crushing and grinding production for development needs. However, when some companies use them, they feel that their output is not ideal. In fact, this has nothing to do with the work efficiency of high-pressure grinding rolls. Too much relationship, mainly because there may be some problems with the method of use.
The output of the high pressure grinding roll refers to the material throughput of the high pressure grinding rolls, that is, the material handling capacity. Generally speaking, the system is equipped with a process of returning the coarse material to extrusion, and the output is different from the throughput of the high-pressure grinding roll. The following editor will tell you how to increase the output of the high-pressure grinding rolls.

High-Pressure Grinding Rolls

1. The bulk density of the extruded cake

In order to increase the output of the high pressure ball press, it is necessary to know the bulk density of the material cake. The bulk density of the material cake depends on the density and extrusion pressure of the material. The higher the density of the material, the greater the bulk density of the material cake. The greater the pressure, the greater the bulk density. For iron ore, the bulk density of high-grade iron ore is usually obtained by experiments. Generally, the larger the bulk density, the higher the crushing and grinding output of the high-pressure rgrinding rolls, so the output is also related to the products produced.

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