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Small-flow miniature electromagnetic valve and assembling and adjusting method thereof

An adjustment method and electromagnetic valve technology, applied in the direction of valve details, valve devices, valve operation/release devices, etc., can solve the problems of inconvenient adjustment methods and low control accuracy, and achieve the avoidance of rubber modification problems and high measurement accuracy , Significant effect on environmental protection

Active Publication Date: 2021-08-03
HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a small-flow micro-solenoid valve and its assembly adjustment method and a small-flow micro-solenoid valve using the small-flow micro-solenoid valve and its assembly adjustment method, which solves the problem of the existing gas solenoid valve Low control accuracy, inconvenient adjustment methods and technical problems in service life

Method used

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  • Small-flow miniature electromagnetic valve and assembling and adjusting method thereof
  • Small-flow miniature electromagnetic valve and assembling and adjusting method thereof
  • Small-flow miniature electromagnetic valve and assembling and adjusting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, a kind of small flow miniature solenoid valve, such as figure 1 As shown, it includes a split valve body, and the valve body includes a split end housing 18, an intermediate housing 4, and an air outlet joint 10, and the end housing 18, the intermediate housing 4, and the air outlet joint 10 are detachably connected. .

[0042] A magnetizable sleeve 1 is arranged in the valve body, and a coil assembly 5 is arranged between the sleeve 1 and the valve body. The step platform 19 is axially fixed. The outer periphery of the armature 8 is provided with a magnetic isolation ring 7 , and the armature 8 can move axially under the magnetization of the coil assembly 5 . The lower end of the armature 8 is provided with a valve seat 9, and the top of the armature 8 is provided with a spring 16 that presses the armature 8 on the valve seat 9. When the coil assembly is not energized, under the elastic force of the spring 16, the armature 8 and the valve seat 9 Crimp ...

Embodiment 2

[0056] Embodiment 2, an assembly and adjustment method of a small-flow miniature solenoid valve, the end casing 18 is injected outside the sleeve 1, and the stopper 2 is installed outside the sleeve 1 before or after the injection of the end casing 18, Then install the coil assembly 5 and the middle housing 4 on the sleeve 1 and clamp and fix them with the end housing 18. The second end of the middle housing 4 is installed with an adjustment pad 6, a magnetic isolation ring 7, an armature 8, and a valve seat 9. , the intermediate housing 4 outside the valve seat 9 is connected to the gas outlet joint 10 .

[0057] Further, the adjustment pin 3 and the spring 16 are inserted from the adjustment end of the sleeve 1 or the other end or the other end, and the spring 16 is separately installed between the armature 8 and the adjustment pin 3 or assembled with the installation groove 83 of the armature 8 Followed by armature 8 synchronous installation.

[0058] Such as figure 1 B i...

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Abstract

The invention discloses a small-flow miniature electromagnetic valve and an assembling and adjusting method thereof. The small-flow miniature electromagnetic valve comprises an end shell, a middle shell and an air outlet connector which are split. A magnetisable sleeve is arranged in a valve body, a coil assembly is arranged between the sleeve and the valve body, an armature, the coil assembly and stop iron are sequentially arranged on the sleeve, and a magnetism isolating ring is arranged on the periphery of the armature. The top of the armature is provided with a spring for pressing the armature on a valve seat, the coil assembly and the stop iron are externally connected and provided with the middle shell, the middle shell is connected with the end shell and the gas outlet connector, the armature and the valve seat are arranged between the middle shell and the gas outlet connector, and the end shell, the middle shell and the gas outlet connector are assembled and then arranged in a fuel gas injection electromagnetic valve seat. According to the small-flow miniature electromagnetic valve and the assembling and adjusting method thereof, accurate metering control of the fuel gas injection amount can be realized, and the command requirement of a CPU is responded in time, so that the optimal air-fuel ratio is achieved, and the emission requirement is met; and meanwhile, adverse effects on the coil assembly during assembly can be avoided, and the opening stroke and the elastic force when the armature is opened can also be adjusted.

Description

technical field [0001] The invention relates to the technical field of gas injection solenoid valves, in particular to a small-flow miniature solenoid valve and an assembly and adjustment method thereof. Background technique [0002] Solenoid valve is an industrial equipment controlled by electromagnetism. It is an automatic basic component used to control fluid and belongs to actuator. It is used to adjust the direction, flow, speed and other parameters of the medium in the industrial control system. Solenoid valves can cooperate with different circuits to achieve the expected control, and the control accuracy and flexibility can be guaranteed. At present, most of the gas metering solenoid valves used in engines in China have problems such as inaccurate gas metering control, unstable flow, and leakage, so that the best air-fuel ratio cannot be achieved, and the emission requirements cannot be met; and the existing gas metering solenoid valves When the electromagnet is in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02F02D19/02F02D41/00F16K31/06
CPCF02M21/0248F02M21/0254F02M21/0257F02D19/024F02D41/0027F16K31/06F16K31/0675Y02T10/30
Inventor 胡丽敏侯涛杨亚青刘宝林冯楠刘刚李远葛赛张万年
Owner HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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