Drive device, drive method and control device of operation window of ventilation cabinet

Abstract

The invention provides a drive device, drive method and control device of an operation window of a ventilation cabinet. The drive device comprises an output shaft, a first-stage straight gear, a second-stage straight gear, a drive module and a fixing module. The output shaft is arranged on a center shaft of the ventilation cabinet in a sleeving manner and used for driving the center shaft to rotate. The first-stage straight gear is arranged on the output shaft in a sleeving manner and used for driving the output shaft to rotate. The second-stage straight gear is engaged with the first-stage straight gear and used for driving the first-stage straight gear to rotate. The drive module cooperates with the second-stage straight gear and is used for driving the second-stage straight gear to rotate. The fixing module is connected with the drive module and used for fixing the drive module to the top end of the ventilation cabinet. According to the drive device, the two stages of straight gearsare adopted for driving the center shaft on the ventilation cabinet, the two stages of straight gears achieve the aim of cooperating with different ventilation cabinets through the later changeable reduction ratio and good adaptability, and the drive device is suitable for most ventilation cabinets in the market and is wide in application range.

Description

technical field [0001] The invention relates to the technical field of fume hoods, in particular to the field of fume hood control, in particular to a driving device, a driving method and a control device for an operating window of a fume hood. Background technique [0002] As a kind of equipment commonly used in laboratories, fume hoods were mostly manually operated in the past, but now it has become a trend to install automatic driving devices on fume hoods, aiming to provide experimenters with a safe experimental environment. Most fume hoods are constructed as figure 1 shown. The top of the fume hood cabinet 106 is provided with an air duct 101, and the top of the fume hood cabinet 106 is provided with a sprocket 103 and a chain 102 (or a synchronous belt and a synchronous pulley), and the two ends of the chain 102 are connected to the operation window 107 and the counterweight 105 , the two sprockets 103 are linked through the central shaft 104 to ensure synchronous ro...

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Problems solved by technology

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a driving device, a driving method and a control device for the operating window of the fume hood, which are used to solve the problem of low adaptability and poor versatility of the fume hood driving device in the prior art. The problem

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