About the mechanical device used in construction
A modern diesel hammer is a very large two-stroke diesel engine. The weight is the piston, and the apparatus which connects to the top of the pile is the cylinder. Piledriving is started by having the weight raised by auxiliary means — usually a cable from the crane holding the pile driver — which draws air into the cylinder. Diesel fuel is added/injected into the cylinder. The weight is dropped, using a quick-release. The weight of the piston compresses the air/fuel mixture, heating it to the ignition point of diesel fuel. The mixture ignites, transferring the energy of the falling weight to the pile head, and driving the weight back up. The rising weight draws in fresh air, and the cycle starts over until the fuel runs out or is stopped by the pile driver.
From an army manual on pile driving hammers: The initial start up of the hammer requires the piston (ram) to be raised to a point where the trip automatically releases the piston, allowing it to fall by gravity. As the piston falls, it activates the fuel pump, which discharges a metered amount of fuel into the ball pan of the impact block. The falling piston also blocks the exhaust ports, and compression of fuel trapped in the cylinder begins. The compressed air exerts a pre-load force to hold the impact block firmly against the drive cap and pile. At the bottom of the compression stroke, the piston strikes the impact block, atomizing the fuel and starting the pile on its downward movement. In the instant after the piston strikes, the atomized fuel ignites, and the resulting explosion exerts an even greater force on the already moving pile, driving it further into the ground. The reaction of the explosion rebounding from the resistance of the pile drives the piston upward. As the piston rises, the exhaust ports open, releasing the gases and force of the explosion into the atmosphere. After the piston stops its upward movement, it again falls by gravity to start another cycle.
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Structure and principles of the Scrap shredder
Scrap shredder is used to destroy the paper shredding machines, obsolete files in order to achieve the purpose of confidentiality, the paper should be divided into many small pieces of paper.
Now scrap shredder, in addition to paper handling, you can also cut a credit card, CD-RO and scrap metal shearsand .
Structure and working principle of the scrap shredder: scrap shredder has two main components "Cutter" and "electric motor", between the belt and gear to make it through tightly connected together, the motor drive belts, gears, the energy transmitted to the cutter, and the cutter by turning with sharp metal corners to paper shredding.
Some scrap shredder on the market can choose two or more shredding method. Shredding different ways for different occasions, if the case is of general office segment is selected, granular, filamentous, strip it. But if it is used in some of the relatively high confidentiality requirements of the occasion it must use foam-like. The current four-way knife consisting of shredding is the most advanced way of working, shredding paper grain neat neat, can achieve the effect of confidentiality.
Cutting principle shredder blades or knives have been misplaced placed in the role of the power source will tear the paper. If the tool or blade is provided with a tip, the shredding effect with block or granular, or if the tool does not set the blade tip, the effect of the strip.
With the current development of the scrap shredder, according to the use of objects, use a different environment, divided into: hand-cranked shredders, shredder desktop, small personal / home shredders, office shredders medium, large work pieces machine several. is used to destroy the paper shredding machines, obsolete files in order to achieve the purpose of confidentiality, the paper should be divided into many small pieces of paper.
CO₂ laser excitation process
CO₂ laser, the main substance of the work by the CO₂, nitrogen, helium three gases composition. Wherein CO₂ laser radiation is generated gas, nitrogen gas and helium as the secondary gas. Added helium, can accelerate the pre-010 level thermal relaxation process, thus facilitating laser level 100 and 020 evacuated. Mainly from the nitrogen added in CO₂ laser energy transfer role for CO₂ laser tube output level and the number of particles accumulate high-power high efficiency play a strong role on the laser. CO₂ laser transition of molecular energy level diagram of CO₂ laser excitation conditions: discharge usually enter tens or hundreds mA mA DC current. Discharge nitrogen molecules in the discharge vessel within the gas mixture due to the collision of electrons which are aroused. Then they are excited nitrogen molecules and CO₂ molecules collide, N2 molecules transfer their energy to the CO₂molecule, CO₂ molecules from the low energy level transition to the formation of the number of particles emitted laser energy level inversion.
CO₂ laser resonator cavity common concave mirror with K8 optical glass or optical quartz, processed by the National Cheng Kung University radius of curvature of the concave mirror coated with a metal film with a high reflectance - gold-plated film at a wavelength 10.6μm the reflection rate of 98.8%, and chemically stable. Light infrared light emitted carbon dioxide. Therefore, the mirror needs to be applied infrared light through the material, because ordinary optical glass impervious to infrared light. It requires the total reflection mirror in the center of a small hole open. Resealing on a permeable material 10.6μm infrared laser, to seal gas. This makes the laser resonator from the outer part of the cavity output orifice to form a laser beam.
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From stone to paper
People have been making paper in one form or another for at least 2000 years, and the art of paper-making has been through several technological shifts, most notably the switch from cotton and linen fibres as a raw material to wood pulp, a development that took place in the mid-nineteenth century. Recently, another approach has emerged - paper made from stone.
Companies involved in the production of paper from stone claim that it offers significant environmental benefits. Shenzhen Stone Pape Enterprise Ltd, a Chinese manufacturer of the Stone paper, says that, in addition to no trees being chopped down, no water, bleach or acid is used in the production ofstone paper, and that the manufacturing process is half as energy- and emissions-intensive as traditional paper-making. Compared to making paper from wood pulp, the stone paper process also consumes less water, and produces less effluent.
The raw material for the paper - calcium carbonate (chalk) - is recycled mining waste, which in principle can be recycled into more stone paper at the end of the product's life. For its stone paper product, Shenzhen Stone Paper Enterprise Ltd has been entiled as high-tech enterprise which is a rare opportunity in the Paper and Packaging category.
Other companies offering stone paper products include Italian brand Ogami, which produces stone notebooks, and a number of US and Asia-Pacific companies - the stone paper technology was developed in Taiwan. Proponents of the paper also note that it is smoother, whiter and more durable that paper from wood pulp. Stone paper is also waterproof paper.
Some questions have been raised about the environmental credentials of stone paper, however. The product is made from 80% calcium carbonate, but this is bound together by plastic - high-density polyethylene (HDPE), which is produced from hydrocarbons. HDPE is recyclable, but it must be recycled with plastics, not with traditional paper, something that consumers will need to be aware of if the stone paper is to be correctly managed when it becomes waste. Stone paper could be a notable eco-innovation - but more analysis is likely to be needed to understand its overall environmental impact.
Mobile repeater installation instructions
EOT mobile repeater is installed, you are not required to lose, eliminating No. disassembly operations. When the end of the column using a mobile repeater mounted on the front side of the ladder and keep the first 20 vehicles. EOT mobile repeater use lithium batteries, open the battery cover, put the battery into the battery compartment in place to move the flash fires to determine whether the repeater power basis; within mobile repeater red button is pressed, the column holding tone Taiwan has made cooing sound code to prove that the device is working properly; when you take the battery first hand bayonet pressed to pull out the battery.
If the radio antenna wires are exposed, stop in the battery compartment opening, mobile repeater set antenna wires inserted into the exposed portion of the gap at the upper part of the body to avoid when installing the battery card off antenna wires, causing the relay does not work, the formation of the end of the column failure, Train Rear affect normal use. Battery installation must be in place, the battery should pop the latch. After the battery is installed, the battery handle flat, top to avoid bad positions locks. After opening the battery door on the right side of the battery compartment has a vertical bar user interface, data acquisition it from top to bottom port,mobile booster eliminating the red button and the number of infrared receiver tube output number.
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How PSA Nitrogen Generation Works
Ad-sorption is the physical process of separating molecules. Our Pressure Swing Adsorption systems generate nitrogen(PSA nitrogen generator), by separating it from the oxygen in ordinary air.
A vessel containing carbon molecular sieve, or CMS, is filled with compressed air. The smaller oxygen molecules are adsorbed by the sieve material while the larger nitrogen molecules drift past and are collected in a nitrogen receiver.Pressure is then released from the vessel, and the oxygen molecules are vented to the atmosphere. At the same time, the cycle is repeated in a second vessel to provide a flow of gas into the nitrogen receiver.
Readygas is a professional equipment factory, specialised in design and manufacturing of nitrogen and PSA oxygen generator solutions using the Pressure Swing Adsorption (PSA) technology.
With ranging from 95% up to 99.9995%, we provide PSA nitrogen generator that are sure to suit your needs. We takes pride in manufacturing a cost effective, quality, reliable PSA nitrogen generator system engineered to meet our customer's specific applicationReadygas is a professional equipment factory, specialised in design and manufacturing of nitrogen and oxygen generator solutions using the Pressure Swing Adsorption (PSA) technology.
We have advanced modern production workshop and a number of advanced gas separation and mechanical technical experts. Readygas know how rely on many years of experience in the industrial gas industry, which has resulted in systems that are among the most reliable and durable in the industry.
With ranging from 95% up to 99.9995%, we provide PSA Nitrogen Generator that are sure to suit your needs. We takes pride in manufacturing a cost effective, quality, reliable PSA Nitrogen generation system engineered to meet our customer's specific application
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For the ball valve used in toilet tanks
A ball valve is a form of quarter-turn valve which uses a hollow, perforated and pivoting ball (called a "floating ball") to control flow through it. It is open when the ball's hole is in line with the flow and closed when it is pivoted 90-degrees by the valve handle. The handle lies flat in alignment with the flow when open, and is perpendicular to it when closed, making for easy visual confirmation of the valve's status.
Ball valve are durable, performing well after many cycles, and reliable, closing securely even after long periods of disuse. These qualities make them an excellent choice for shutoff applications, where they are often preferred to gates and globe valve, but they lack their fine control in throttling applications.
The ball valve's ease of operation, repair, and versatility lend it to extensive industrial use, supporting pressures up to 1000 bar and temperatures up to 752 °F (500 °C), depending on design and materials used. Sizes typically range from 0.2 to 48 inches (0.5 cm to 121 cm). Valve bodies are made of metal, plastic, or metal with a ceramic; floating balls are often chrome plated for durability.
A ball valve should not be confused with a "ball-check valve", a type of check valve that uses a solid ball to prevent undesired backflow.
