中空玻璃加工设备：针阀漏胶？这样更换密封，简单又牢固

　　Hollow glass processing equipment: Is the needle valve leaking glue? Replacing the seal in this way is simple and secure

　　在中空玻璃加工设备的打胶、涂胶环节，针阀是控制胶液精准输出的关键部件，一旦出现漏胶问题，不仅会造成胶液浪费，还会污染玻璃表面、影响封胶精度，严重时甚至耽误生产进度。很多一线操作人员遇到针阀漏胶时，大多知道是密封圈老化或损坏导致的，但不清楚具体更换方法。其实更换针阀密封圈的操作并不复杂，只要按规范步骤拆解、安装，就能轻松解决漏胶问题。今天就专门科普这个实用技巧，详细说说中空玻璃加工设备针阀密封圈的更换方法。

　　In the gluing and coating process of insulating glass processing equipment, the needle valve is a key component for controlling the precise output of the glue solution. Once there is a glue leakage problem, it will not only cause waste of glue solution, but also contaminate the glass surface, affect the sealing accuracy, and even delay the production progress in severe cases. Many frontline operators who encounter needle valve leakage are aware that it is caused by aging or damage to the sealing ring, but are unsure of the specific replacement method. In fact, the operation of replacing the needle valve sealing ring is not complicated. As long as it is disassembled and installed according to the standard steps, the problem of glue leakage can be easily solved. Today, we will specifically explain this practical technique and provide a detailed explanation of the method for replacing the needle valve seal ring in insulated glass processing equipment.

　　先跟大家理清核心逻辑：针阀漏胶的核心原因是内部密封圈失去密封性能，更换的关键是精准拆解针阀部件、按正确方向安装新密封圈，再依次回装固定，重点要注意密封圈的卡槽对位和部件安装力度，避免因安装不当再次出现漏胶。整个过程无需专业维修工具，普通扳手、内六角扳手即可完成，新手也能快速上手。

　　First, let me clarify the core logic: the core reason for needle valve leakage is the loss of sealing performance of the internal sealing ring. The key to replacement is to accurately disassemble the needle valve components, install new sealing rings in the correct direction, and then reinstall and fix them in sequence. It is important to pay attention to the alignment of the sealing ring slot and the installation force of the components to avoid further leakage due to improper installation. The entire process does not require professional maintenance tools, ordinary wrenches and hex wrenches can be used to complete it, and even beginners can quickly get started.

　　第一步，断电泄压，拆解前置准备。操作前先确认设备断电、胶路泄压，避免拆管时胶液喷射或设备意外启动。首先找到针阀连接的两根气管，轻轻将气管拔下，拔的时候注意记好气管连接位置，方便后续回装。气管拔完后，用工具将针阀周边的固定部件拆开，让针阀主体完全暴露，便于后续拆卸。

　　The first step is to cut off the power and release the pressure, and prepare for disassembly. Before operation, confirm that the equipment is powered off and the rubber circuit is depressurized to avoid glue spraying or accidental equipment start-up during pipe dismantling. Firstly, locate the two air tubes connected by the needle valve and gently remove them. When removing, make sure to note the position of the air tube connection for easy reinstallation. After removing the trachea, use a tool to disassemble the fixed components around the needle valve, allowing the needle valve body to be fully exposed for subsequent disassembly.

　　第二步，拆卸针阀主体，拆分内部结构。用合适的工具将针阀主体拧下来，注意拧动时力度要均匀，避免损坏螺纹。针阀拆下来后，找到上面的四个固定螺丝，将螺丝依次拆下并妥善收纳，防止丢失。拆开螺丝后，就能看到针阀的内部结构，此时可以取出旧的密封圈——旧圈大概率已经老化、变形或破损，这就是漏胶的根源。

　　Step two, disassemble the needle valve body and dismantle the internal structure. Use a suitable tool to unscrew the needle valve body, paying attention to the even force when twisting to avoid damaging the threads. After removing the needle valve, find the four fixing screws on top, remove them one by one and store them properly to prevent loss. After unscrewing the screw, the internal structure of the needle valve can be seen, and the old sealing ring can be removed - the old ring is likely to have aged, deformed, or damaged, which is the root cause of the glue leakage.

　　第三步，安装新密封圈，精准对位组装。这一步是关键，安装新密封圈时，要确保密封圈的卡槽方向正确，必须顺着卡槽的导向安装，不能装反或偏移。将新密封圈放入卡槽后，把压盖对准位置压入卡槽内，然后顺时针将压盖拧进去，拧到合适力度即可，不用过度用力，避免挤压损坏新密封圈。压盖安装好后，将密封室对准螺纹口拧回针阀主体内，确保安装到位、无松动。

　　Step three, install the new sealing ring and accurately align and assemble it. This step is crucial. When installing a new sealing ring, it is important to ensure that the groove direction of the sealing ring is correct. The installation must follow the direction of the groove and cannot be reversed or offset. After placing the new sealing ring into the slot, align the pressure cover with the position and press it into the slot. Then screw the pressure cover clockwise to the appropriate force, without excessive force, to avoid damaging the new sealing ring due to compression. After the gland is installed, align the sealing chamber with the threaded port and screw it back into the needle valve body to ensure that it is installed in place and not loose.

　　第四步，回装针阀与气管，加压测试。先将针阀的阀芯按原位置安装好，然后把之前拆下的四个螺丝依次拧紧，固定牢固。螺丝拧紧后，用扳手或内六角扳手对针阀的加压部件进行加压，加压力度以“紧实不松动”为宜，过度加压会导致部件变形，加压不足则可能再次漏胶。最后，将之前拔下的两根气管按原位置插回，确保接口连接牢固、无漏气。

　　Step four, reinstall the needle valve and trachea, and conduct a pressure test. First, install the valve core of the needle valve in its original position, and then tighten the four screws that were previously removed one by one to secure it firmly. After tightening the screws, use a wrench or an Allen wrench to apply pressure to the pressure parts of the needle valve. The appropriate pressure should be "tight and not loose". Excessive pressure may cause deformation of the parts, while insufficient pressure may result in glue leakage again. Finally, insert the two previously removed air tubes back into their original positions to ensure a secure and leak free interface connection.

　　这里给大家补充几个实操注意事项：一是拆螺丝、拧部件时要做好标记，避免回装时位置错乱；二是新密封圈要选用与原型号匹配的，不同规格的密封圈无法保证密封效果；三是安装过程中要保持手部和部件清洁，避免杂质混入胶路；四是更换完成后，建议开机空载测试，观察针阀是否还有漏胶情况，确认无异常后再投入正常生产。

　　Here are a few practical precautions for everyone: First, when removing screws and tightening components, make sure to mark them properly to avoid misplacement during reassembly; Secondly, the new sealing ring should be selected to match the prototype number, as different specifications of sealing rings cannot guarantee the sealing effect; Thirdly, during the installation process, hands and components should be kept clean to avoid impurities from entering the adhesive path; Fourthly, after the replacement is completed, it is recommended to start the machine and conduct a no-load test to observe whether the needle valve still leaks glue. After confirming that there are no abnormalities, it can be put into normal production.

　　针阀作为中空玻璃加工设备的易损耗部件，密封圈老化是常见问题，掌握简单的更换技巧，能让一线操作人员快速解决漏胶故障，减少生产延误。日常使用中，建议定期检查针阀密封状态，发现胶液渗漏及时更换密封圈，同时避免胶液干结堵塞针阀，延长部件使用寿命。希望这次科普能帮到大家，在日常操作中更好地应对这类设备小问题。如果更换后仍有漏胶，可进一步检查针阀阀芯是否磨损，或联系设备厂家技术支持。

　　Needle valve, as a consumable component of hollow glass processing equipment, has a common problem of aging sealing rings. Mastering simple replacement techniques can enable frontline operators to quickly solve glue leakage problems and reduce production delays. In daily use, it is recommended to regularly check the sealing status of the needle valve, replace the sealing ring in a timely manner if glue leakage is found, and avoid the glue from drying up and blocking the needle valve, thereby extending the service life of the components. I hope this science popularization can help everyone better deal with small problems with such devices in daily operations. If there is still glue leakage after replacement, you can further check whether the needle valve core is worn or contact the equipment manufacturer's technical support.

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