hardware parts

Newland was founded in 2003 by Frank Wang whose dream was to operate a CNC machine when he studied at university major in Mechanics, with the great passion in industry area and addicted to metals & machines, finally his dream come true in half, Newland occurred. Starting from several workers, simple workshop to nowadays almost 200 staffs enterprise under Frank's leading. Another half dream now is in effort. Newland started as a Magnet Manufacturer in 2003. With the fast growing of the company, we rapidly expanded into other Product lines recently. Now we are not only a Manufacturer, but also a Professional Magnetic Solution Provider. We focus on industry and customer's needs research and analysis, and provide Product Solution to assist our customers to turn a product concept into reality, diversify their product line, and improve their core competitive. We are currently specializing in serving the industries including Permanent Magnets, Magnetic Assemblies, Gifts & Toy

The mechanical seal is a combined mechanism composed of a series of simple design elements. The sealing function is completed by two main sealing rings with planes to prevent leakage. One of the seal rings is connected with the shaft and rotates, and the other seal ring is fixed on the housing. In order to seal the centrifugal pump shaft, the static seal ring is installed on the gland of the seal cavity. During the rotation of the pump shaft, the sealing surface of the sealing ring mounted on the shaft rubs against the opposite stationary ring sealing surface. The contact action of these two sealed contact surfaces is similar to a bearing and is subject to wear. Any form of system leakage must pass through this sealed contact surface. The force acting in the axial direction keeps the sealing ring always in frictional contact. The source can be mechanical or hydraulic. In many designs, the sum of the two is taken. This stable contact can prevent leakage from the friction surfaces or

Background osteoarthritis (OA) It is very common in the elderly, and the knee is the most common joint in this group. In daily activities, knee pads are often used to prevent common problems in the knees. The purpose of these devices is to reduce pain and improve functionality. In the literature, a number of studies have tested the efficacy of unloaded stent treatment for valgus or varus. However, the most used braces and lower cost braces in our clinical setting were not described in the quality studies in the literature. There is very little research on this issue, and it is not enough in methodology. The effectiveness of the knee brace with metal hinges was not studied for comparison ( Valgus or varus are not aligned) Knee pads without metal hinges (Neoprene sleeve). Objective to evaluate the effect of knee pads on pain, function and quality of life in elderly knee OA patients. Methods the pain scale was used for the elderly with knee OA 3- Including 7 cm on the 10 cm pain figure sc

Mechanical seal means that at least one pair of end faces perpendicular to the axis of rotation are kept against contact and slide relative to each other under the action of fluid pressure and elastic force (or magnetic force) of the compensation mechanism and auxiliary seal to prevent fluid leakage. Device. The elastic loading mechanism and auxiliary seal are mechanical seals of metallic corrugated tubes. We call them metal bellows seals. Among the light-weight seals, there are rubber bellows used as auxiliary seals. The rubber bellows has limited elasticity, and generally needs to be supplemented with springs to meet the loading elasticity. "Mechanical seal" is often referred to simply as " mechanical seal ". Mechanical seal is the most important shaft sealing method in centrifugal pump, reaction kettle, agitator and other equipment. The mechanical seal is also called the end face seal, which is defined in the relevant national standards as follows: "At lea

The seal .com/" target="_blank">mechanical seal is composed of at least a pair of end faces perpendicular to the axis of rotation under the cooperation of the fluid pressure and the elastic force of the compensation mechanism and the auxiliary seal to maintain and slide relative to form a device to prevent fluid leakage. Mechanical seals are widely used in petroleum and chemical companies.Due to their good sealing performance, stable performance, low leakage, low friction power consumption, long service life, little wear on the shaft (or sleeve), they can meet a variety of working conditions Requirements and other characteristics are widely used. However, its sealing structure is complicated, the use conditions are harsh, the price is high and the maintenance technology is high, especially the mechanical seal process conditions such as temperature, pressure and other process parameters directly affect the performance and service life of the mechanical seal of the equ

Before installing the seal .com/" rel="noopener noreferrer" target="_blank">mechanical seal, you must first make preparations: 1. If a new mechanical seal is replaced, it is necessary to check whether the model and specifications of the mechanical seal are correct and whether the quality meets the standards; 2. The end of the anti-rotation groove at the end of the static ring and the top of the anti-rotation pin should maintain an axial gap of 1mm-2mm to avoid buffer failure; 3. The end faces of the moving and static rings are cleaned with alcohol. The remaining metal parts are cleaned with gasoline and dried with clean compressed air. Carefully check to ensure that the sealing surfaces of the moving and static rings are not damaged. Before assembling, two pieces of "0" rubber seals should be coated with a layer of lubricating oil, and the end faces of the moving and static rings must not be oiled. The components of the mechanical seal and thei

 Dismantlement of the seal .com/" target="_blank">mechanical seal The  dismantlement order of the mechanical seal is opposite to the installation order. Care must be taken in the process of disassembling the mechanical seal. Do not use a hand hammer or flat shovel. Do not knock the mechanical seal. Do not damage the sealing surface of the dynamic or static ring of the mechanical seal. Clean it with kerosene and then disassemble it, so as to keep the parts of the mechanical seal intact. Maintenance of mechanical seal After removing the mechanical seal, first check the pump body with the organic seal installed, and the following requirements must be met: 1. The maximum shaft bending degree is ≤0.05mm, and the axial movement is ≤0.05mm; 2. The runout at the sealing ring of the moving ring ≤0.01mm; 3. The surface roughness of the shaft or bushing where the mechanical seal is installed is 1.6 μm, and the surface roughness in contact with the static ring sealing surface is

Before installing the seal .com/" rel="noopener noreferrer" target="_blank">mechanical seal, you must first make preparations: 1. If a new mechanical seal is replaced, it is necessary to check whether the model and specifications of the mechanical seal are correct and whether the quality meets the standards; 2. The end of the anti-rotation groove at the end of the static ring and the top of the anti-rotation pin should maintain an axial gap of 1mm-2mm to avoid buffer failure; 3. The end faces of the moving and static rings are cleaned with alcohol. The remaining metal parts are cleaned with gasoline and dried with clean compressed air. Carefully check to ensure that the sealing surfaces of the moving and static rings are not damaged. Before assembling, two pieces of "0" rubber seals should be coated with a layer of lubricating oil, and the end faces of the moving and static rings must not be oiled. The components of the mechanical seal and thei

Seals are widely used in life. Basically, the seal s will be used when they are in contact with the machinery. It's as big as a car plane, as small as a lighter mouse and so on. All have to use seals. There are many types of seals, which can be divided according to raw materials: comparison of common silicone rubber seals, fluororubber seals, ethylene propylene rubber, polytetrafluoroethylene, chlorine mechanical seal models, butadiene rubber, polyurethane, etc. It can be divided into acid resistant seals , alkali resistant seals, high temperature resistant seals, low temperature resistant seals, oil resistant seals, etc. Many machines can't work without seals, let's say oil seals, if there is no oil seal, oil may leak, and even the machine can't work. I often see news of crude oil leaking on TV. In fact, it means that the seals are not done well, maybe the quality of the seals is not enough. Seals are an important part of machinery and have an important effect on the

The first is to use the concept of "containers" in transportation to produce container seal s. The rotating and stationary parts of this seal are pre-assembled as a whole before installation. After inspection and pressure test, they are fitted on the shaft in the shaft seal box and fixed on the shaft with set screws. Positioning piece, mechanical seal can be put into operation in parallel plane. This not only facilitates but also ensures quality. Welded metal bellows mechanical seals are made into cartridge seals, which has the above advantages. The cassette seal is also a cartridge type mechanical seal. The static ring, moving ring, shaft sleeve, gland and auxiliary seal of this kind of seal are assembled together with a shaft sleeve before installation, which is convenient for checking the quality. After passing the inspection, just tighten the sealing cover and tighten the screws. Such pre-assembled, inspected and tested sealing components can easily ensure the quality

Seals are widely used in life. Basically, the seals will be used when they are in contact with the machinery. It's as big as a car plane, as small as a lighter mouse and so on. All have to use seals. There are many types of seals, which can be divided according to raw materials: comparison of common silicone rubber seals, fluororubber seals, ethylene propylene rubber, polytetrafluoroethylene, chlorine mechanical seal models, butadiene rubber, polyurethane and so on. It can be divided into acid resistant seals, alkali resistant seals, high temperature resistant seals, low temperature resistant seals , oil resistant seals, etc. Many machines can't work without seals, let's say oil seals, if there is no oil seal, oil may leak, and even the machine can't work. I often see news of crude oil leaking on TV. In fact, it means that the seals are not done well, maybe the quality of the seals is not enough. Seals are an important part of machinery and have an important effect on

After deformation, it can be used for a long time. In addition to soft PVC, common auxiliary seal ing materials are rubber and PTFE.    1. PTFE has the advantages of excellent chemical stability, oil resistance, solvent resistance, moisture resistance, low coefficient of friction, etc. The disadvantage of being suitable for various corrosive media is that its elasticity is inferior to rubber and easy Produce permanent deformation.    2. Rubber Rubber has better elasticity, cushioning, vibration absorption, heat resistance and corrosion resistance. Rubber seal s have good sealing effect and are widely used. Commonly used rubbers are silicone rubber, nitrile rubber, neoprene rubber and fluorine rubber.    Elastic element material For Mechanical Seal    1. Spring material The requirements of the spring material are: good elasticity and resistance to medium corrosion. Common spring materials are stainless steel spring steel (1Cr18Ni9Ti, etc.), chromium steel (3Cr13, 4Cr13, etc.), carbon ca

Installation method of mechanical seal 1. Check the seal before installation Whether it is a new mechanical seal or a repaired seal, you need to carefully check the following items before installation: check all the parts, the parts must be clean and free of dirt, especially the sealing surface of the dynamic and static ring ; Check the rotating parts of the seal, the drive pin and the spring pin, etc. move freely; check the positioning screws of the rotating parts, the positioning screws should be free and the old ones should be replaced; carefully check the thickness of all auxiliary seals according to the seal installation drawing Appropriate will affect the correct positioning of the seal and the spring load applied to the sealing surface; check that all rotating parts are properly matched with the shaft (or sleeve); check the sealing surface of the dynamic and static rings, there must be no nicks or scratches, any point Minor damage may cause leakage of the sealing surface. 2. T

In centrifugal pumps and reaction kettles, the seal between the rotating pump shaft and the stationary casing is simply referred to as a shaft sealing device. Currently, centrifugal pumps and reaction kettles are commonly used for packing and mechanical seals. Mechanical seals are widely used because of their advantages such as small leakage, long service life, low power loss, no need for frequent maintenance, and low environmental impact. The manufacture of mechanical seals is complicated and requires high precision. During operation, the inspection personnel are required to find problems in time and deal with them as soon as possible, so as to extend the service life of mechanical seals. Vibration, heat and smoke of mechanical seal 1. The end pressure is larger Treatment measures: (1) Adjust the position of the moving ring base to reduce the specific pressure of the end surface; (2) Replace the mechanical seal spring to reduce the end surface specific pressure. 2. Rough end face

Auxiliary seal s include dynamic and static ring seals, which are mostly made as O-rings, V-rings, rectangular rings, wedge rings or trapezoidal rings. Their main functions are: to prevent leakage between the moving ring and the rotating shaft, and the static ring and the gland; to compensate for the deflection and vibration of the sealing surface, so as to ensure a good fit of the dynamic and static ring end faces. The materials of the auxiliary sealing ring are mainly elastomers (such as rubber), plastics (such as tetrafluoroethylene), fibers (such as asbestos, carbon fiber), inorganic materials (such as expanded graphite), and metals (such as copper, aluminum, stainless steel, etc.). The requirements for the physical and mechanical properties of the auxiliary sealing ring material are related to the sealing surface material. 1.Synthetic rubber Rubber auxiliary seal is the most widely used auxiliary seal . Common rubber seals include nitrile rubber, fluorine rubber, silicone rubber