Integral double-valve gas injection valve and assembly method thereof

A technology of gas injection and assembly method, which is applied in the direction of valve device, valve operation/release device, valve lift, etc., and can solve problems such as poor workmanship, difficulty in sealing, and complex structure.

Active Publication Date: 2014-12-10
WEIFANG LICHUANG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the technical limitations of processing and assembly, only the production process of split manufacturing and combined installation can be used. The two valve pieces are manufactured separately, and they are assembled into one body by welding or press-fitting during the assembly process. The structure is complex. , poor workmanship, difficult to guarantee sealing

Method used

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  • Integral double-valve gas injection valve and assembly method thereof
  • Integral double-valve gas injection valve and assembly method thereof

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Embodiment Construction

[0018] like figure 1 As shown, the integral double-valve gas injection valve of the present invention includes a valve body 1, a valve core 2 installed in the valve body 1, a front valve plate 3 coaxially arranged with the valve core 2, a rear valve plate 4 and A moving armature 5, an electromagnetic coil 6, a connecting rod 10 is arranged between the front valve plate 3 and the rear valve plate 4, the valve core 2 is fixedly connected to the front end of the front valve plate 3, and the moving armature 5 is installed on the rear The rear end of the valve plate 4, the electromagnetic coil 6 is fixedly connected to the rear end of the valve body 1, and the inner cavity of the valve body 1 is provided with a front valve plate hole 31 matching the front valve plate 3 and a matching rear valve plate 4 The rear valve hole 41. When in use, the armature 5, the front valve plate 3 and the rear valve plate 4 are driven to move axially by the suction force of the electromagnetic coil 6...

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Abstract

The invention relates to a gas injection valve, in particular to an integral double-valve gas injection valve and an assembly method thereof. The integral double-valve gas injection valve comprises a valve body, a valve spool, a front valve block, a rear valve block, a moving armature and an electromagnetic coil, the valve spool is mounted in the valve body, the front valve block and the rear valve block are coaxially arranged with the valve spool, a front valve block hole matched with the front valve block and a rear valve block hole matched with the rear valve block are arranged in the inner cavity of the valve body, the front valve block and the rear valve block are fixedly connected into an undetachable integral structure through a connecting rod, the diameter of the front valve block is smaller than that of the rear valve block, and the diameter of the front valve block is smaller than the inner diameter of the rear valve block hole. By the double-valve gas injection structure, the integral double-valve gas injection valve is large in gas injection rate, high in response speed, simple in structure and easy to assemble, and problems about assembly difficulties like structure, manufacturability and sealing due to a combined double-valve structure are avoided.

Description

technical field [0001] The invention relates to a gas injection valve, in particular to an integral double-valve gas injection valve and an assembly method thereof. Background technique [0002] Injection volume and response time are two important parameters to measure the pros and cons of gas injection valves. Due to the low density of gas, the diameter of the valve required for large injection flow is also large, but the large gas working pressure acts on On the valve, it will hinder the opening and closing movement of the valve and restrict the response time. Therefore, high-speed electromagnetic gas injection valves driven by electromagnetics can generally only adapt to smaller flow requirements and lower gas pressure conditions, and cannot meet high-speed quantitative injection under larger flow and higher pressure requirements. [0003] The EGR valve produced by Delphi Company of the United States adopts balanced double-valve intake, the diameters of the two valve pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K1/44F16K31/06
CPCB23P19/04F16K1/00F16K1/36F16K1/44F16K31/0675F16K31/0655
Inventor 吴龙龙
Owner WEIFANG LICHUANG ELECTRONICS TECH
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