Novel vacuum degree regulator

Abstract

The invention relates to a vacuum degree regulator. A flange rabbet is arranged at the front end of a magnet yoke case, the bottom end of a cover cap and the edge of a rubber film are arranged in the flange rabbet, the back end of a magnet yoke tube is provided with a reduced opening, the back end of the magnet yoke case is inserted into the bottom end from the front end of the magnet yoke tube in a matched way, and is formed into a whole body with an installation hoop arranged on the outer peripheral surface of the magnet yoke tube, a coil framework is arranged in the magnet yoke case, an upper magnetic pole component and a lower magnetic pole component are respectively arranged at the front end of the magnet yoke case and the back end of the magnet yoke tube, and the back end of the magnet yoke tube is provided with a coil lead socket. The invention has the advantages that on the premise that the external installation dimension and the body structure of an original product are not changed, the invention is optimized and changed into the application of an ordinary punching and stretching forming process and a mature little-dust or dustless forming process, so the main technical quality index of the whole machine product is more stable and reliable, the process method and structure is simple and convenient, and the effect of reducing the cost of mass production can be reached.

Description

Technical field [0001] The invention relates to a vacuum regulator, which is a control component of a diesel engine pneumatic exhaust gas recirculation system. Background technique [0002] With the progress of science and technology and the continuous improvement of living standards, people's requirements for the living environment are constantly increasing. Therefore, one of the main reasons for environmental pollution-the emissions of nitrogen, oxygen, carbon and oxygen and other compounds and tiny particles produced by internal combustion engines. Various more and more stringent control standards have to be put forward. In order to compound these standards, scientists have added a lot of control functions to the engine to reduce the pollution of the exhaust gas to the environment. One of the important control functions is figure 1 The computer-controlled pneumatic EGR (Exhaust Gas Recirculation) system shown is composed of four parts: [0003] ①The lower part is the engine bod...

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Problems solved by technology

[0013] The purpose of the present invention is to provide a vacuum degree regulator to solve the problem that the structure of existing products needs to use precision stamping and stretching, medium and high precision machining and machine tools with relatively large mold clamping injection pressure; it is equipped with high precision and complex In the three-dimensional space and multi-angle direction mold clamping movement structure mold, assemble the sub-parts, so that the main part of the product is injection-molded with engineering plastic PBT. The problem is that the structure is complex, the process is difficult, the consumables are large, and the cost is high.

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