The Fence Series refers to a collection of different types of fences that are designed for various purposes. These fences are typically used for security, privacy, or aesthetic purposes. They come in different materials, styles, and sizes to suit specific needs. Fence Series,Metal Mesh Fence,Prison Security 358 Fence,Hesco Barrier Military Hebei Aibuer trading co., Ltd , https://www.ablehardwares.com
Metal Mesh Fence: A metal mesh fence is a type of fencing made from metal wires woven together to create a mesh pattern. It is commonly used for various applications, including residential, commercial, and industrial purposes. Metal mesh fences are known for their durability, strength, and visibility.
Prison Security 358 Fence: The Prison Security 358 Fence, also known as a 358 mesh fence or anti-climb fence, is specifically designed to provide high-security protection. It is made of welded steel wire with closely spaced horizontal and vertical wires, forming a grid with 3-inch (approximately 76 mm) by 0.5-inch (approximately 12.7 mm) openings. The small mesh size makes it difficult for individuals to climb or cut through the fence, hence its common use in prisons, military installations, and high-security areas.
Hesco Barrier Military: Hesco barriers, also known as Hesco bastions or Hesco Concertainer units, are a type of temporary defensive barrier system used by the military and other organizations for protection against blast and ballistic threats. Hesco barriers consist of a collapsible WIRE MESH container lined with heavy-duty fabric and filled with soil, sand, or other locally available materials. They are commonly used to create fortifications, defensive walls, or flood barriers. The modular nature of Hesco barriers allows for easy transportation and rapid deployment in emergency situations.
These various types of fences and barriers serve different purposes, ranging from enhancing security to providing temporary protection in military or emergency situations. The specific choice of fence depends on the intended application and the level of security or functionality required.
Application characteristics and selection of screw pump
Screw pump application characteristics and selection method Screw pump because of its variable delivery, self-priming ability, reversible, capable of conveying liquids containing solid particles and other characteristics in the sewage treatment plant, is widely used in the transport of water, wet sludge And flocculant liquid. Screw pump selection should follow the economic, reasonable and reliable principles. If the design selection of ill-considered, will give future use, management, maintenance trouble, so the selection of a practical production needs, reasonable and reliable screw pump can ensure the smooth production, but also reduce repair costs . First, the speed of the screw pump selection Screw pump flow and speed into a linear relationship, relative to the low-speed screw pump, screw pump with high speed can increase the flow and lift, but the power increased significantly, high speed accelerated the rotor and Stator wear, the screw will inevitably lead to failure, and high-speed screw rotor rotor length is very short, easy to wear, thus shortening the life of the screw pump. Through reducer or stepless speed regulation mechanism to reduce the speed, the exploration speed maintained at a reasonable range of three hundred revolutions per minute, and high-speed operation of the screw pump, the service life can be extended several times. Second, the quality of the screw pump screw pump on the market now more types, relatively speaking, imported screw pump design, excellent material, but the higher prices, some services are not in place, high parts prices, long ordering cycle , May affect the normal operation of production. Most of the domestic production of imported products imitation, product quality varies greatly in the choice of domestically produced products, considering its cost-effective time, the choice of low speed, long lead, transmission parts of good quality, long life rating of the product. Third, to ensure that debris does not enter the wet mud sludge mixed with solid impurities will screw the rubber material stator damage, so to ensure that debris does not enter the cavity of the pump is very important, many sewage treatment plant before the pump Installed a grinder, and some grille installation or filter, blocking debris into the screw pump, grill should be promptly salvaged to avoid clogging. Fourth, to avoid broken screw pump Never run in the case of broken material, once occurred, the rubber stator due to dry friction, instantaneous heat generated and burned, so the grinder intact, smooth grille is necessary for the normal operation of the screw pump One of the conditions, therefore, some screw pump is still installed in the pump body break down device, when there is a broken material, due to the self-priming screw pump has the characteristics of the cavity will produce a vacuum, the vacuum device will stop the screw pump Run. Fifth, to maintain a constant outlet pressure Screw pump is a positive displacement rotary pump, when the outlet end is blocked, the pressure will gradually increase, so that the pressure exceeds the predetermined value. At this time the motor load increased dramatically. Transmission machinery related parts load will exceed the design value, severe motor burn occurs, the transmission parts broken. In order to avoid damage to the screw pump, generally installed at the outlet of the screw pump bypass relief valve to stabilize the outlet pressure to maintain the normal operation of the pump.