Description of the internal structure of the compound crusher

The compound crusher has a large crushing ratio, and the maximum crushing ratio can reach the output particle size. It can be adjusted arbitrarily, and is not affected by the hammer and liner wear; the structure adopts a non-screen setting, which crushes materials with high moisture content and large mud content. It is not easy to be clogged; the elastic adjustment mechanism is adopted, and the unbreakable materials can be automatically discharged without causing equipment damage; the bearings are arranged horizontally, with a long life, and can crush high-temperature materials (such as cement clinker); the rotor body structure of this machine is unique When crushing materials, the rotor body is hardly worn; the rear cavity is equipped with a screw rod or a hydraulic opening mechanism, and the wearing parts can be easily replaced without using the main equipment.

Structural advantages:

1. The structure is simple and reasonable, and the operating cost is low. Using the principle of rock-to-stone, the wear is small.

2. High crushing rate and energy saving.

3. It has the functions of fine crushing and coarse grinding.

4. It is less affected by the moisture content of the material, and the moisture content can reach about 8%.

5. The working noise is lower than 75 decibels (db level), and the dust pollution is less.

6. Suitable for crushing medium-hard and extra-hard materials.

7. The products are cubes with high bulk density and minimal iron pollution.

8. The impeller’s self-lining wear is small, and the maintenance is convenient.

compound crusher

principle:

The material falls vertically from the upper part of the machine into the high-speed rotating impeller, under the action of high-speed centrifugal force, and
The other part shunts the material around the impeller in the form of an umbrella to produce high-speed impact and crushing. After the materials collide with each other, they will form a vortex between the impeller and the casing. It is discharged to form a closed circuit for multiple cycles, which is controlled by the screening equipment to achieve the required finished product particle size.

The compound crusher is a kind of unscreened, adjustable fine crushing equipment optimized and designed on the basis of absorbing advanced fine crushing equipment at home and abroad. It can be widely used in the fine crushing of raw materials and clinker in cement plants, and can also be used for fine crushing operations. Dolomite, coke gemstone, lead-zinc ore, serpentine, blast furnace slag, coal gangue, phosphate rock and other medium-hard materials finely crushing operations, especially suitable for hard limestone, dolomite, granite, basalt and other artificial sand or high-speed Processing and crushing of road pavement stones.

Daily maintenance:

1. Regularly shut down and open the observation door of the vertical crusher to observe the internal wear of the crusher. The wear level of the center feed pipe, cone cap, upper and lower runner linings of the impeller, circumferential guard plate, and wear-resistant block should be replaced in time after wear. Or repair, and replace the wear-resistant blocks at the same time to ensure that the weight of the wear-resistant blocks is the same. It is strictly forbidden to open and observe the crusher during operation] to observe the internal working conditions, so as to avoid danger. If the impeller body is found to be worn, replace it in time and seek repair from the manufacturer.

2. The vertical crusher adopts special grade automotive grease or 3# lithium base grease. Appropriate amount of grease is added every 400 hours of work. After 2000 hours of work, the main shaft assembly is opened to clean the bearings. Generally, it works for 7200 hours and replaces the new bearings. The upper bearing of the main shaft assembly is the floating end, and the lower bearing is the fixed end. After assembly, the pulley should rotate flexibly when pulled by hand.

3. The tensioning force of the drive triangle tape should be adjusted appropriately to ensure that the triangle tape is evenly stressed. When driven by dual motors, the triangle tapes on both sides should be grouped and matched, so that the length of each group is as consistent as possible. It should be adjusted so that the current difference between the two motors does not exceed 15A.D. In the operation of the vertical crusher, because the equipment is a high-speed equipment, special attention should be paid to safe production. Relevant personnel should stay away from the equipment, and repairs should be carried out after shutdown if the machine needs to be repaired.

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What is the principle of magnetic bead method for nucleic acid extraction

The binding of nucleic acid to magnetic beads mainly relies on electrostatic, hydrophobic and hydrogen bonding. The DNA/RNA in the cell or tissue is released under the action of the lysis solution. At this time, the surface-modified superparamagnetic silica nanomagnetic beads “specifically bind” with nucleic acid to form a “nucleic acid-magnetic bead complex”. Then under the action of an external magnetic field, the complex is separated. After the eluate is washed to remove the non-specifically adsorbed magazines, desalted, and purified, the nucleic acid substance to be extracted is obtained.

The nucleic acid extraction principle is according to surface of superparamagnetic nanoparticles is modified and modified by nanotechnology to prepare superparamagnetic silica nanomagnetic beads. The magnetic beads can specifically recognize and efficiently bind with nucleic acid molecules on the microscopic interface. Using the superparamagnetism of silica nanospheres, under the action of Chaotropic salts (guanidine hydrochloride, guanidine isothiocyanate, etc.) and an external magnetic field, DNA and DNA can be separated from samples such as blood, animal tissues, food, and pathogenic microorganisms. RNA can be used in clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbiological testing, food safety testing, molecular biology research and other fields.

In fact, since testing institutions need to process a large number of samples every day, most of the nucleic acid extraction steps are carried out by means of an automatic nucleic acid extraction instrument with a magnetic bead method nucleic acid extraction kit.

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What is nucleic acid

There are many types of nucleic acid extraction kits，such as bacterial genomic DNA extraction kit ,whole blood genomic DNA nucleic acid extraction kit and etc. Today, we will mainly introduce the principle, use method and specific steps of the magnetic bead method nucleic acid extraction kit.

Nucleic acids are widely present in all animals, plant cells, and microorganisms. Nucleic acids in organisms often combine with proteins to form nucleoproteins.

According to different chemical composition, nucleic acid can be divided into ribonucleic acid, referred to as RNA and deoxyribonucleic acid, referred to as DNA. DNA is the main material basis for storing, copying and transmitting genetic information. RNA plays an important role in the process of protein synthesis, among which transfer ribonucleic acid, tRNA for short. Plays the role of carrying and transferring activated amino acids; messenger ribonucleic acid, referred to as mRNA, is the template for protein synthesis. Ribosomal ribonucleic acid, rRNA for short, is the main place where cells synthesize proteins.

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Introduction of Lining Trolley Walking System

The lining walking system consists of two parts, active and passive, with a total of four sets of devices installed under the four-door frame. When the trolley travels, the power is provided by the front two sets of active traveling mechanisms, the traveling motor drives the reducer, and then the active traveling mechanism is driven by the chain drive to drive the trolley to travel, and the rear two passive traveling mechanisms follow. The walking system is generally equipped with a track clamp to ensure that the trolley will not automatically slide, especially in places with large slopes.

Lining trolley walking system and steel formwork trolleys after the demoulding, first close the gantry support jack, then tighten the gantry to support the jack, start the walking motor to walk.

For specific information about the lining trolley, please visit the tunnel construction equipment manufacturer.

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What are the commonly used tunnel construction equipment?

Now, the degree of mechanization of tunnel construction is relatively high. Generally speaking, the commonly used tunnel construction equipment mainly includes: concrete mixing station, concrete transport truck, concrete pump, generator set, large-capacity transformer, high-lift pump, and constant pressure water supply equipment , Large electric air compressors, rock drills, high-power ventilators, dump trucks, side-turn loaders, excavators, concrete sprayers, grouting machines, steel bar processing equipment, tunnel formwork trolleys, gravel processing equipment, and self-propelled special mold base for processing, etc.

Concrete mixing station: responsible for mixing concrete used in tunnels and mixing sprayed concrete dry materials.

Concrete truck: Transport the mixed concrete to the place of use.

Concrete delivery pump: Pump the concrete in the concrete truck to the pouring site.

Generator set: As the backup power for the tunnel power supply, when the grid power fails, the generator will start to supply power.

Large transformer: Provide electricity for tunnel construction.

High-lift pump: pump the water from the lower part of the water into a pool about 50 meters above the top of the tunnel, and then take over it as the high-pressure water source for tunnel construction.

Constant pressure water supply equipment: when there is no high-level pool, provide rated pressure water equipment to the high-pressure pipe network.

Large-scale air compressor: Provide high-pressure wind to the tunnel construction face. Generally, the wind pressure reaches 5-7kg/cm2.

Rock drill: commonly known as pneumatic drill, equipment for drilling blastholes.

High-power ventilator: It is an important equipment for tunnel ventilation to ensure the air quality in the tunnel.

Dump truck: Generally, a large dump truck of 12 to 15 tons is used for the transportation of caverns.

Rollover loader: loading equipment to load the caverns on the dump truck.

Excavator: remove the loose ballast on the working face and excavate the inverted arch of the tunnel.

Concrete Shotcrete: Shotcrete equipment.

Grouting machine: grouting into the ground or the bolt hole.

Rebar processing equipment: processing rebar.

Tunnel formwork trolley: As a large overall formwork for tunnel lining, it can move forward and backward by itself, and it is equipped with hydraulic cylinders both horizontally and vertically.

Crushed stone processing equipment: The cave ball is processed into crushed stone and used as concrete material.

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Definition of tunnel lining

Tunnel lining refers to a permanent structure that supports and maintains the long-term stability and durability of the tunnel. Its functions are: to support and maintain the stability of the tunnel; to maintain the space required for train operation; to prevent the weathering of surrounding rocks; to relieve the influence of groundwater. Therefore, the tunnel lining must have sufficient strength, durability and a certain degree of frost resistance, impermeability and erosion resistance. The tunnel lining is mainly composed of arch ring, side wall, invert and bottom plate. In order to drain the water in the tunnel, a drainage ditch (central drainage ditch or side ditch) is also set in the tunnel.

After the tunnel was excavated, the original balance of the stratum around the tunnel was destroyed, causing deformation or collapse of the tunnel. In order to protect the stability of the surrounding rock and ensure driving safety, the tunnel must have a supporting structure with sufficient strength, that is, the tunnel lining.

The tunnel lining is a permanent support structure built with reinforced concrete and other materials along the periphery of the tunnel body to prevent deformation or collapse of the surrounding rock. Different lining forms can be used in different surrounding rocks. Commonly used lining forms are shotcrete lining, shotcrete lining and composite lining. In most cases, composite lining is used. Composite lining is often divided into primary support (primary lining) and secondary support (secondary lining).

Commonly used tunnel lining materials are: concrete and reinforced concrete, rubble concrete, aggregate stone or concrete precast blocks, and shotcrete. The lining structure of the tunnel is mainly determined according to the geological and topographical conditions of the tunnel, considering the rationality of the structural force, the construction method and the construction technology level and other factors. The structure, shape and size of the tunnel lining differs due to its use, topography, geology, construction and structural performance and other conditions.
For more details of tunnel lining, please click to visit: https://www.gf-bridge-tunnel.com/

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Introduction of Tanker Sales Manufacturers

The tanker sales manufacturer Luoyang CIMC Linyu Automobile Co., Ltd. is located in Luoyang, the ancient capital of the Nine Dynasties, which is known as the “Millennium Peony City”. It is a company with more than 40 years of automobile production history. It is one of the backbone member companies of CIMC Vehicles (Group) Co., Ltd. (referred to as CIMC Vehicles Group).

CIMC Linyu, a tanker sales manufacturer, is mainly engaged in the manufacture and sales of semi-trailers and special vehicles. Since the beginning of 2002, it has been producing and selling semi-trailers. Since 2013, the company has maintained the world’s number one semitrailer sales volume for five consecutive years. The semi-trailer product line mainly includes Jiping semi-trailers, storage semi-trailers, tank semi-trailers, refrigerated semi-trailers, and van semi-trailers; the top product line mainly includes top loading of dump trucks and mixer trucks. In 2017, CIMC Automobile launched the first-generation mid-mounted axle vehicle in the Chinese market.

The company has total assets of more than 700 million yuan and more than 1,500 employees. Leading products include “Lingyu” brand tank special vehicles, sanitation equipment, and refrigerated insulation vehicles. The current annual production capacity is 15,000 units. The products cover 31 provinces, municipalities and autonomous regions across the country, and are exported to all parts of the world. Now it ranks among the forefront of China’s oil tanker industry.

The company has introduced and applied a series of advanced management models such as SAP, JIT, TQM, TPM, and passed IS09001, ISO14001, CCC, ISO/TS16949 and other certifications. In 2010, it was awarded a high-tech enterprise. The current special-purpose vehicle production line is an advanced domestic production line. The combination of full-line streamlined operation with patented non-standard equipment and tooling fixtures can effectively control the production efficiency and process quality of each process. Advanced management has created high-quality products and won praise from the market and users.

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Introduction to the performance of CIMC septic tank truck

A septic tank truck is a vacuum truck that removes spoilage waste from septic tanks, cesspools and chemical toilets (portable toilets) and disposes them at approved wastewater treatment sites.
The CIMC septic tank truck is a dedicated vehicle that combines a powerful vacuum pump with a storage tank for sewage and wastewater.Start the vacuum pump, confirm the suction, and connect the pump to a 4″ or larger vacuum line that the operator uses to empty the septic tank truck.
The CIMC offers a variety of pump sizes and pumping rates, all of them that work on septic pumper trucks will be similar in effect however.This is a very powerful pump, usually weighing 470 pounds, using 6 blades, water cooled, and pumping sewage at 400 cubic feet per minute. It will be apparent that the diaphragm that passes through the unit and into the pump truck will be highly agitated and mixed in the truck. This agitation is correct for any pump used in this application.

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Oil tank truck model introduction

Hit the point! This time the customer chose the exclusive model. Tailored according to customer needs, the oil tank truck is equipped with Jiefang J6P380 horsepower engine, super torque, providing surging power, while lower fuel consumption; using three well-known company hydraulic system, superior performance; in addition, Equipped with 8+5 beams, four-directional images, blind spot radar, active right blind spot detection, automatic seat ventilation and heating, unique eagle-eye bright marking, more comfortable driving and high driving safety factor. For more detailed information about the tanker truck, please consult the tanker truck sales manufacturer for details

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Introduction of Direct Reduced Iron Briquetting Machine

Reduced iron is a low-carbon porous substance in the form of refined iron powder reduced at low temperature in the furnace. It has stable chemical composition and low impurity content. It is mainly used as a raw material for electric furnace steelmaking. It is a high-quality raw material for smelting high-quality steel and special steel. It is used as a coolant for converter steelmaking, but because it is a low-carbon porous substance, the density is too low to be used directly, and it must be used after high-pressure molding. Iron powder reduction briquetting machine is a good choice.

The structural characteristics of the host of the direct reduced iron briquetting machine. The host is composed of upper and lower beams, hydraulic cylinder assembly, feeding cylinder, mold, hopper, liquid filling assembly, etc. The upper and lower beams are connected by uprights and nuts, and the front end of the main hydraulic cylinder is flanged to the bottom of the beam. The mold is fixed on the lower beam, and the mold sleeve is fixed in the mold. The punch is directly connected to the top of the piston rod of the oil cylinder. Both die sleeve and punch can be disassembled and replaced.

The direct reduced iron briquetting machine has a plate-drawing cylinder located behind the lower mold of the main machine. The plate-drawing cylinder forms the bottom of the cavity with the mold sleeve in the front position, and forms a space at the bottom in the rear position, which is conducive to the falling of the cakes and has the function of pushing the cakes out of the bottom of the mold. The feeding cylinder and the feeding hopper form an automatic feeding mechanism. The feeding of the machine is completed by the reciprocating action of the feeding cylinder. The filling system is located on the side of the beam to replenish the oil required for the rapid advance of the main cylinder.

For detailed information about the direct reduced iron briquetting machine, please consult Luoyang Zhongyuan Mining Machinery Co., Ltd.

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