A kind of manufacturing method of screw plug with adjustment and sealing function
With the rapid development of China's economy and the rapid development of science and technology, the assembly manufacturing industry has also risen rapidly, and correspondingly, gas and hydraulic systems are widely used in various mechanical equipment. In order to make the screw plug more convenient to install, the flow adjustment and the sealing effect are more firm and reliable. To this end, it is necessary to design a plug with adjustment and sealing functions to meet the needs of a variety of air, hydraulic systems and other fluid delivery systems
The technical problem to be solved by the utility model is to solve the problems existing in the background technology, and provides a simple structure, stable and reliable, easy to implement, and can be applied to various requirements of high reliability, light weight, high use pressure and use. A screw plug on pneumatic or hydraulic equipment with harsh environments, specifically a screw plug with adjustment and sealing functions.
In order to solve the above-mentioned technical problems, the technical scheme adopted by the present invention is as follows: a screw plug with adjustment and sealing functions, comprising a screw plug body with a cylindrical structure as a whole, and the screw plug body includes a thread provided with an external thread The connection part and the fluid communication part are provided with an adjustment groove along the axial direction on the front end surface of the threaded connection part, and a fuse hole is also arranged on the threaded connection part, the fuse hole penetrates the plug body and is connected with the plug body The adjusting groove is perpendicular to the shaft center; a fluid channel and two sealing grooves are arranged on the fluid communication part along the circumferential direction of the shaft, and the sealing grooves are evenly and symmetrically distributed in the fluid channel relative to the fluid channel interval. sides.
Further, the cross-sectional diameter of the threaded connection portion is larger than the cross-sectional diameter of the fluid communication portion.
Further, the fluid passage is located in the middle of the fluid communication portion, and the fluid passage and the sealing groove have the same cross-sectional diameter, which is 2/3 to 3/4 times the cross-sectional diameter of the fluid communication portion.
The screw plug of the utility model is a kind of screw plug with adjustment and sealing functions, which is designed and developed according to the needs of flow regulation in the gas, hydraulic system and other fluid conveying systems of aerospace equipment. In practical application, its working principle is as follows: the plug body is connected with the internal thread in the housing assembly by virtue of its connection part with an external thread, and the fluid in the housing assembly 8 is adjusted by the length of the screw thread. The length of the communication part can adjust the matching area between the fluid channel and the A and B in the housing channel in the housing assembly, so as to adjust the flow rate. At the same time, since two sealing grooves are arranged on the fluid communication part along the circumferential direction of the shaft, and a sealing ring is installed in the sealing groove, the sealing effect can be achieved by the sealing ring, and the sealing effect is good and reliable. When adjusted to the specified requirements, the flow is stable and reliable. In addition, the reliability can be further improved by inserting the fuse in the fuse hole and fixing it. In the actual production process, the plug body is made of materials with very good performance, so that it can be used in systems with high pressure up to 20Mpa, and can also be used in harsh environments, high temperature can reach +225 ℃ or low temperature can reach - Under the condition of 70℃, it has good sealing effect, excellent corrosion resistance and wide applicability.
