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A microvalve for controlling air pressure

A technology for controlling air pressure and microvalve, applied in the field of microfluidics, can solve the problems of frictional force, large valve volume, complex structure, etc., and achieve the effect of easy packaging, simple process and small volume

Active Publication Date: 2018-09-07
哈尔滨工达海卓智能成形科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of existing conventional servo valves, such as large volume, complicated structure, high price, and frictional force affecting the micro-flow control characteristics, and further provides a micro-valve for controlling air pressure

Method used

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  • A microvalve for controlling air pressure
  • A microvalve for controlling air pressure
  • A microvalve for controlling air pressure

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Experimental program
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Effect test

specific Embodiment approach 1

[0008] Specific implementation mode one: combine Figure 1-Figure 3 Describe this embodiment mode, a kind of microvalve for controlling air pressure described in this embodiment mode, it comprises microvalve air inlet port flow channel 4-2, microvalve air outlet port flow channel 4-3, micro flow channel 4-4 and Two solenoid valves 4-1, a micro-channel 4-4 is arranged between the two solenoid valves 4-1, and the two solenoid valves 4-1 are sealed and communicated through the micro-channel 4-4, one of the solenoid valves 4- 1 is connected to the external air source 4-5 through the air inlet channel 4-2 of the microvalve, and the other solenoid valve 4-1 is connected to the external air outlet through the air outlet channel 4-3 of the microvalve.

specific Embodiment approach 2

[0009] Specific implementation mode two: combination Figure 1-Figure 3 Describe this embodiment, a micro valve for controlling air pressure described in this embodiment, the solenoid valve 4-1 includes an electromagnetic driver 3-1 and a valve body 3-2, and the electromagnetic driver 3-1 is arranged close to the valve body 3-2 , the other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0010] Specific implementation mode three: combination Figure 1-Figure 3 Describe this embodiment, a microvalve used to control air pressure described in this embodiment, the electromagnetic driver 3-1 includes a plastic shell 1-1, a ferromagnetic shell 1-2, a coil 1-3, an iron core 1- 4. Armature 1-5, return spring 1-6, positioning pin 1-7, valve seat 1-8, base 1-9 and valve core 1-10, coil 1-3 is wound on iron core 1-4, reset The spring 1-6 is sleeved on the armature 1-5, the lower end of the armature 1-5 is fixedly connected with the top of the valve core 1-10, the iron core 1-4 is fixedly installed on the inner wall of the ferromagnetic housing 1-2, and the iron The magnetic housing 1-2 is fixedly installed on the inner wall of the plastic housing 1-1, the middle part of the valve seat 1-8 is processed with a through hole, and the positioning pin 1-7 is fixedly installed on the side wall of the through hole of the valve seat 1-8. The armature 1-5 and the valve core 1-10 ...

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Abstract

The invention discloses a micro valve used for controlling air pressure, and relates to the micro valve which aims to solve the problems that an existing conventional servo valve is big in valve size, is complex in structure and is high in price, and micro flow control characteristics are affected by friction force. The micro valve comprises a micro valve gas inlet end runner, a micro valve gas outlet end runner, a micro runner and two solenoid valves; the micro runner is arranged between the two solenoid valves; the two solenoid valves are sealed and communicate with each other through the micro runner; and one solenoid valve is connected with an external gas source through the micro valve gas inlet end runner, and the other solenoid valve is connected with an external gas outlet through the micro valve gas outlet end runner. The micro valve belongs to the field of micro fluid control.

Description

technical field [0001] The invention relates to a micro-valve, in particular to a micro-valve for controlling air pressure, which is used in applications such as micro-drive or pneumatic micro-fluidic chip control, and belongs to the field of micro-fluidic control. Background technique [0002] At present, micro-flow control has become an important development direction of fluid control technology, and it has become one of the indispensable technologies in the field of micro-drive, micro-injection and micro-fluidic chips. At present, the conventional pneumatic servo valve / proportional valve has a large structure size. Due to the limitation of the frictional force of the spool and the characteristics of the valve port, it is impossible to realize the stable control of the small air flow, which limits the realization and application of the small flow control. Contents of the invention [0003] The invention aims to solve the problems of the existing conventional servo valves...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K99/00F16K31/06
CPCF16K99/0003F16K99/0015F16K99/0046
Inventor 李松晶刘旭玲符海
Owner 哈尔滨工达海卓智能成形科技有限公司