• How to Make a Test on Plastic Caps

    How to Make a Test on Plastic Caps

    23-08-2018

    How to properly control the sealing performance of the cap is the focus of the production unit on-line or off-line testing. For plastic caps, because of the degree of sealing, a positive pressure seal tester is used, but the market positive pressure seal The tester directly blows compressed air into the sealed bottle, which inevitably explodes when the bottle is flawed. According to experts, a 2.5-liter cola bottle explodes at 1.2 MPa, which is quite destructive. For 100-150 grams of explosives. The national standard GB/T17876-1999 specifically specifies the detection of the plastic anti-theft cap, such as the opening torque of the cap, thermal stability, drop resistance, leakage and sealing performance. Among them, the sealing performance and the opening of the cap and the tightening torque are effective ways to solve the sealing performance of the plastic anti-theft cap. Depending on the use of the cap, there are different regulations for the test methods that do not include a gas cap and a gas cap. If the gas cap is not included, the cap should be cut off and the anti-theft ring (strip) should be used for sealing the rated torque of not less than 1.2NM. Test with a seal tester, pressurize to 200 kPa, and keep the pressure under water for 1 minute to observe whether it leaks. Gas or tripping; the gas-containing cap is pressurized to 690 kPa, and the pressure is maintained under water for 1 minute. Observe the gas leak, and then increase the pressure to 1207 kPa, maintain the pressure for 1 minute, and observe whether the cap is tripped. The instrument can be used for the quantitative measurement of leakage and sealing performance of standard plastic anti-theft caps (including gas...

  • Distinguishing the Quality of the Fine Mist Sprayer I

    Distinguishing the Quality of the Fine Mist Sprayer I

    04-09-2018

    Since the sprayer is designed to operate under a variety of different spray conditions, the sprayers that are suitable for the application are selected to achieve optimum spray performance during use. The characteristics of the sprayer are mainly reflected in the type of spray of the sprayer, that is, the shape formed when the liquid leaves the sprayer opening and its running performance. The name of the sprayer is divided into a fan shape, a cone shape, a liquid column flow (ie, a jet), an air atomization, and a flat fine mist sprayer. The cone sprayer is divided into two types: a hollow cone and a solid cone; The fine mist sprayers (ie, mixing fine mist sprayers), the strong (hot) tuyere blowing fine mist sprayers, and the special fine mist sprayers (such as garden fine mist sprayers, cylinder washing fine mist sprayers, tube cleaning fine mist sprayers, etc.) are named after the fine mist sprayer performance. There are many types of sprayers, and the range of choice is large. Generally speaking, fine mist sprayers for degreasing and water washing processes can be selected with jet fine mist sprayers with strong impact force: the "V" type fan fine mist sprayer is taken as an example, and the spray angle is 60 degree is the best, with a large impact force; and the fine mist sprayer of the phosphating process can choose a centrifugal fine mist sprayer with good atomization, fine water particles and weak impact force: take "Z" type cone fine mist sprayer as an example The optimal distance of the atomizing fine mist sprayer from the workpiece is 40cm~50cm, and has the function of dispersing and atomizing the liquid. The arrangement of the fine mist...

  • Distinguishing the Quality of the Fine Mist Sprayer II

    Distinguishing the Quality of the Fine Mist Sprayer II

    06-09-2018

    The factors that use the sprayer are flow, pressure, spray angle, coverage, impact force, temperature, material, application, etc., and these factors are often intertwined and mutually constrained. Flow and pressure, spray angle and coverage are proportional. The purpose of any fine mist sprayer injection is to maintain continuous contact of the bath with the workpiece. This factor is more important than pressure. The temperature of the liquid does not affect the fine spray performance of the fine mist sprayer, but it affects the viscosity and specific gravity, as well as the choice of material. The material of the fine mist sprayer should also be determined according to the chemical characteristics of the bath. For non-corrosive baths, bronze casting or plastic die casting can be used according to the difficulty of processing. In order to prevent corrosion, non-metallic materials may be used; for strong etching baths such as sulfuric acid and hydrochloric acid, nylon plastic may be used; fine mist sprayer materials for phosphating baths are generally made of acid-resistant stainless steel, and fine mist sprayers for preventing corrosion may also be directly selected from stainless steel or Made of nylon material. For fine mist sprayers with a certain impact force, a small angle fine mist sprayer should be used, and the liquid column flow (ie, jet) is the best; the fan fine mist sprayer is suitable for cleaning, degreasing, cooling, etc. The cone fine mist sprayer is suitable for drifting, surface layer, phosphating, humidifying. In the aspect of dust removal, etc.; the venturi mixing fine mist sprayer should be installed in the paint storage tank and the tank body. Take the "H" type stirring fine mist sprayer (also known as the venturi fine mist sprayer)...

  • The Selection Method for Trigger Sprayer

    The Selection Method for Trigger Sprayer

    13-09-2018

    There are many types of sprayers and the range of choice is large. Generally speaking, sprayers for degreasing and water washing processes can be selected with jet sprayers with strong impact force. The factors that select the trigger sprayer are flow, pressure, spray angle, coverage, impact force, temperature, material, application, etc., and these factors are often intertwined and mutually constrained. Flow and pressure, spray angle and coverage are proportional. The purpose of any trigger sprayer injection is to maintain continuous contact of the bath with the workpiece. This factor is more important than pressure. The temperature of the liquid does not affect the spray performance of the trigger sprayer, but it affects the viscosity and specific gravity, as well as the choice of material. The material of the trigger sprayer should also be determined according to the chemical characteristics of the bath. For non-corrosive baths, bronze casting or plastic die casting can be used according to the difficulty of processing. In order to prevent corrosion, non-metallic materials may be used; for strong etching baths such as sulfuric acid and hydrochloric acid, nylon plastic may be used; trigger sprayer materials for phosphating baths are generally made of acid-resistant stainless steel, and sprayers for preventing corrosion may also be directly selected from stainless steel or Made of nylon material. For sprayers with a certain impact force, a small angle trigger sprayer should be used, and the liquid column flow (ie jet) is the best; the fan trigger sprayer is suitable for cleaning, degreasing, cooling, etc. The cone industrial trigger sprayer is suitable for drifting, surface layer, phosphating, Humidification, dust removal, etc.; venturi mixing trigger sprayer should be installed in the paint storage tank and tank body. Take...

  • There Are Differences in Sprayer Bottles of Different Materials

    There Are Differences in Sprayer Bottles of Different Materials

    18-09-2018

    The flow rate is mainly affected by the pore size and pressure of the orifice. Under normal circumstances, the larger the orifice diameter, the larger the flow rate; the same pressure, the greater the pressure, the flow will increase. In addition, the flow rate is also affected by the spray medium. Under the same pore diameter and the same pressure, the flow rate will decrease as the viscosity of the medium increases. Second, the pressure. under normal circumstances, the sprayer will only achieve the desired atomization effect when the standard pressure is reached. If the pressure is lower than the minimum required for the sprayer, the atomization effect will be discounted, and the pressure will also affect the sprayer flow. Increasing the pressure can increase the flow rate of the sprayer without changing the sprayer parameters. In general, equipment such as a booster pump can be used to increase the pressure of the liquid, and equipment such as an air compressor can be used to increase the pressure of the gas. Third, the spray angle. The angle of sprayer bottles the refers to the angle at which the atomized liquid is scattered. Even if it is the same sprayer, it can have a variety of sprayer bottle angles to choose from, depending on the customer's needs, but even the same sprayer, under different pressures, the spray There will also be minor differences in angles. Under normal circumstances, the larger the spray angle, the greater the coverage of the installation height and pressure. Fourth, coverage. The spray coverage is mainly restricted by the spray angle and the sprayer installation height. When the other parameters of the sprayer are fixed, the larger the spray angle of the...

  • Selecting Fan-shaped Sprayer Bottle Is More Efficient and Better

    Selecting Fan-shaped Sprayer Bottle Is More Efficient and Better

    20-09-2018

    Regardless of the use of the product, the most important thing is of course the efficiency problem. The use of sprayers requires more attention to the more efficient use of the product, especially in the current era of speed pursuit, of course, the efficiency can not be too low. In the current selection of sprayer bottle, the efficiency of the fan sprayer is better. It can be said that the spray shape edge of the design of the fan sprayer is well defined, and the flow guiding plane which is more advantageous for the fine processing provides a uniform, high impact spray shape. More efficient use of lifting sprayers! Because the development of the sprayer industry is now more, the efficiency of the various spiral sprayers developed and produced is flat, and the design of the spray channel relatively directly affects the spray effect. However, the design of the fan sprayer is different. The design of the spray channel is large and smooth, which reduces the blockage and improves the efficiency. The fan-shaped profile of the spray produces a tapered edge. The spray particles are fine and uniform, and the spray particles are medium in size. When the sprayers are arranged, a 25% to 30% overlap is required to make the arrangement in the entire direction uniform. The fan-shaped spray spray can produce a variety of angles, and the water flow is uniform. The droplet size is medium-sized and the unit is connected by means. It is easy to install and replace the filter, and it is easy to clean. This is the more efficient use of fan sprayers and the principle of efficiency! Use sprayers with higher efficiency. The better use of fan-shaped sprayers...