Intelligent negative pressure control aspirator applied to dental department

Abstract

The invention discloses an intelligent negative pressure control aspirator applied to a dental department. The intelligent negative pressure control aspirator comprises a frequency converter, a fan, a water-gas separator and a negative pressure sensor, wherein one end of the frequency converter is connected with a dental treatment machine to receive negative pressure demand information, the other end of the frequency converter is connected with the fan to start the fan according to the negative pressure demand information and control the different rotating speeds generated by the fan; the fan can realize different negative pressure aspiration forces through the generated different rotating speeds so as to perform water-gas separation; one end of the water-gas separator is connected with a water-gas pipeline of the dental treatment machine, the other end of the water-gas separator is connected with a waste gas exhaust pipeline and a waste water drain pipeline, the water-gas separator aspirates and separate waste gas and waste water in the dental treatment machine through negative pressure aspiration forces generated by the fan, and then exhausts the waste gas and waste water through the waste gas exhaust pipeline and the waste water exhaust pipeline; one end of the negative pressure sensor is connected with the fan and used for sensing the negative pressure aspiration forces generated by the rotation of the fan, and the other end of the negative-pressure sensor is connected with the frequency converter and is used for feeding back the sensed negative pressure aspiration forces to the frequency converter and used for feeding back the sensed negative pressure aspiration forces to the frequency converter and controlling the rotating speed of the fan through the frequency converter.

Description

technical field [0001] The invention relates to a suction machine, in particular to a negative pressure intelligent control suction machine applied in dentistry. Background technique [0002] Dental negative pressure suction machines currently used in dental treatment equipment are mainly used in the extraction of splash water mist generated by saliva in the patient's oral cavity and surgical tools used during dental surgery. [0003] The current situation of the existing dental negative pressure suction machine is: (1) It can only provide a fixed suction. If the number of use changes, it cannot effectively provide an overall stable negative pressure level, which will affect the surgical work. (2) When the fan produces too much gas and the negative pressure is too large, it uses a simple mechanical pressure relief valve to release the pressure. When the gas production of the fan changes continuously, the pressure relief valve will be accelerated The frequency of use and wea...

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Problems solved by technology

[0003] The current situation of the existing dental negative pressure suction machine is: (1) It can only provide a fixed suction. If the number of use changes, it cannot effectively provide an overall stable negative pressure level, which will affect the surgical work. (2) When the fan produces too much gas and the negative pressure is too large, it uses a simple mechanical pressure relief valve to release the pressure. When the gas production of the fan changes continuously, the pressure relief valve will be accelerated The frequency of use and wear reduces the durability of the pressure relief valve, resulting in increased maintenance costs

[0004] The disadvantages of the existing dental negative pressure suction machines are: (1) they cannot effectively provide a stable negative pressure level; (2) they cannot effectively adjust the working efficiency of the fan automatically according to the actual use conditions, so as to meet both Environmentally friendly use conditions that meet actual work requirements and can effectively save energy

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