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Rotermeter linkage device with synchronous belt

A technology of rotameter and linkage device, which is applied in flow control without auxiliary power, volume/mass flow generated by mechanical effect, respirator, etc., which can solve the problems of poor consistency of oxygen concentration and achieve good consistency and easy layout , The transmission ratio does not slip

Inactive Publication Date: 2009-11-25
BEIJING AEROSPACE CHANGFENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to overcome the deficiency of the existing flowmeter linkage device due to the use of gear transmission or sprocket transmission, the poor consistency of the forward and reverse strokes of the oxygen concentration caused by the large gear gap, the present invention provides a synchronous belt rotor flowmeter linkage device. The synchronous belt rotameter linkage device can realize the output ratio of oxygen and laughing gas with accurate, stable and easy-to-control concentrations, and the oxygen concentration has good consistency in positive and negative strokes

Method used

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  • Rotermeter linkage device with synchronous belt
  • Rotermeter linkage device with synchronous belt
  • Rotermeter linkage device with synchronous belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synchronous belt rotameter linkage, including:

[0037] Two suspension rotameters with variable air inlets, each of the flow control knobs (2) of the flowmeter is equipped with a gear; the two gears are connected by a synchronous belt (14), so the two flow control knobs ( 2) Linkage according to the gear ratio.

Embodiment 2

[0039] Such as the synchronous belt rotameter linkage device of embodiment 1, but the flowmeter includes a needle valve (1); the needle valve (1) is provided with a flow control button (2); the flow control button (2) can control the needle valve The size of the gap between the thimble (3) and the air inlet (4); the flowmeter is provided with an air source inlet (5); the gap between the needle valve thimble (3) and the air inlet (4) is connected to the glass conical tube (6) the lower end, the upper end of the glass conical tube (6) is the gas outlet (8); the glass conical tube (6) is provided with a buoy (7).

[0040] The gas enters through the gas source inlet (5), enters the glass conical tube (6) through the gap between the needle valve thimble (3) and the air inlet (4), and is output from the gas outlet (8).

[0041] The linked flow control knob changes the size of the gap between the needle valve thimble (3) and the air inlet (4) respectively, so as to adjust the ratio o...

Embodiment 3

[0043]As in the synchronous belt rotameter linkage device of embodiment 1 or embodiment 2, but the flowmeters are oxygen flowmeter (10) and nitrous oxide flowmeter (9) respectively, and the gas entering is oxygen and nitrous oxide respectively, The gears installed on the flow control knob (2) are respectively the nitrous oxide flow control button gear (9-1) and the oxygen flow control button gear (10-1).

[0044] The gear ratios of the gears installed on the flow control knobs of the oxygen and nitrous oxide flowmeters can be easily changed according to needs, so as to realize the provision of oxygen and nitrous oxide according to preset ratios. The output ratio of oxygen and laughing gas is accurate, stable and easy to control, and the oxygen concentration has good consistency in positive and negative strokes.

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Abstract

A rotermeter linkage device with a synchronous belt comprises an oxygen flow meter (10) and a laughing gas flow meter (9); flow control knobs (2) of the meters are provided with a gear respectively; the two gears are connected by the synchronous belt (14); the flow control knobs (2) control a gap between a needle valve lift pin (3) and a gas inlet (4); and the linked flow control knobs respectively change the size of the gap between the needle valve lift pin (3) and the gas inlet (4) so as to regulate ratio of outputted gas flow. The rotermeter linkage device adopting the synchronous belt can provide oxygen and laughing gas according to preset ratio; and the output ratio of the oxygen to the laughing gas is accurate, stable and easily controlled, and the consistency of oxygen concentration in forward and reverse strokes is good.

Description

Technical field [0001] The invention relates to a linkage device for measuring and controlling gas flow, in particular to a synchronous belt rotameter linkage device suitable for anesthesia machines. It belongs to the technical field of medical equipment manufacturing. Background technique [0002] The anesthesia machine is an important tool for general anesthesia in modern hospitals. Its main function is to provide patients with inhalation anesthesia, oxygen supply and assisted or controlled breathing. An anesthesia machine with excellent performance should be able to provide inhaled anesthetics with precise, stable and easy-to-control concentrations. [0003] Anesthesia machines can be divided into high flow anesthesia machines according to the flow rate - the minimum flow rate of oxygen and nitrous oxide is mostly above 0.5L / min, so only higher flow anesthesia can be performed; low flow anesthesia machine - the minimum flow rate of oxygen and nitrous oxide It can reach ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/52A61M16/01G05D7/01
Inventor 王明治
Owner BEIJING AEROSPACE CHANGFENG CO LTD
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