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Low-frequency micro pulsating pressure generator

A pressure generator and tiny technology, applied in fluid pressure actuation devices, fluid pressure actuation system components, mechanical equipment, etc., can solve problems such as difficulty in generating low-frequency trace pressure signals

Inactive Publication Date: 2013-10-23
上海示才生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing common method is to use the electromagnetic coil to push the corrugated diaphragm in the airtight cavity to compress the air in a small amount, thereby generating a dynamic trace pressure signal. This method is difficult to generate a low-frequency trace pressure signal below 5 Hz

Method used

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  • Low-frequency micro pulsating pressure generator

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Embodiment

[0016] see figure 1 , a low-frequency micro-pulsation pressure generator, including a cylinder block 2, a piston 8 arranged in the cylinder block 2, a spring 7 connected between the inner wall of the cylinder block 2 and the bottom of the piston 8, and a piston connecting rod connected to the top of the piston 8 6. The piston connecting rod 6 passes through the cylinder block 2 and extends to the outside of the cylinder block 2. At the end of the piston connecting rod 6 outside the cylinder block 2, a miniature pulley 9 is arranged. The miniature pulley 9 connects with the eccentric wheel 10, and the eccentric wheel 10 is connected to the The rotating shafts of the stepping motor 11 are connected, and the stepping motor 11 is connected with the stepping motor controller 3 through a line.

[0017] The bottom of the above-mentioned cylinder block 2 provided with a spring 7 is connected with an output connecting pipe 5, the end of the output connecting pipe 5 is provided with a p...

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Abstract

The invention discloses a low-frequency micro pulsating pressure generator which comprises an air cylinder body, a piston arranged in the air cylinder body, a spring connected with the bottom of the piston, and a piston rod connected with the top of the piston, wherein the piston rod penetrates through the air cylinder body and extends to the outside of the air cylinder body; a micro pulley is arranged at the end part of the piston rod outside the air cylinder body, and connected with an eccentric wheel; the eccentric wheel is connected with a rotating shaft of a stepping motor; and the stepping motor is connected with a stepping motor controller by a line. A groove is formed in the surface of the eccentric wheel, and the micro pulley is embedded into the groove to exert a directional effect on the piston. A pressure amplitude regulating valve is arranged on an output connection pipe below a pressure output interface. The generator overcomes the defect that the former pulsating pressure generator cannot generate lower-frequency trace pressure signals. The generator can provide low-frequency trace pressure signals below 5Hz for producing dynamic pressure instruments and equipment.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a low-frequency micro-pulse pressure generator. Background technique [0002] In the field of medical device technology, it is usually necessary to manufacture micro-sized pressure devices and instruments. When manufacturing these micro-pressure devices, it is necessary to provide stable low-frequency dynamic pressure signals to the pressure sensor of the instrument and the whole machine. The existing common method is to use the electromagnetic coil to push the corrugated diaphragm in the airtight cavity to compress the air in a small amount, thereby generating dynamic trace pressure signals. This method is difficult to generate low-frequency trace pressure signals below 5 Hz. Contents of the invention [0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides a low-frequency micro-pulsation pressure generator, which provides a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/12
Inventor 夏金辉
Owner 上海示才生物科技有限公司
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