Agrichemical Spray Mask Two-Stage Filtration Design
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Solution Overview
Problem
Existing agrichemical spray masks are ineffective in preventing inhalation of agrichemicals, as their filters become quickly soaked, leading to reduced functionality and the need for frequent replacement and cleaning, and are not designed to handle wet mist sprays effectively, especially when spraying upwards.
Innovation Solution
A two-stage filtering system with a spray filter tube and an anti-dust and anti-toxin filter tube, where the spray filter is detachably coupled to prevent direct contact and is easily replaceable and cleanable, and the respiration port is positioned at the bottom to prevent agrichemical ingress even when spraying upwards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a cotton mask is used to prevent agrichemical inhalation, then the mask is cheap and convenient, but the mask is easily soaked by agrichemical sprays, making it ineffective after a short time
Solution Approach 1:
The mask is divided into multiple functional layers: an outer spray filter layer that captures liquid agrichemical droplets, and an inner anti-dust/anti-toxin filter layer that filters vaporized chemicals. This segmentation allows each layer to perform its specialized function, preventing the single-layer cotton mask from being quickly saturated and ineffective.
Solution Approach 2:
A spray filter tube is introduced as an intermediary component between the external environment and the anti-dust/anti-toxin filter. This spray filter tube with its conical protrusions captures liquid sprays before they reach the expensive anti-dust filter, protecting it from rapid saturation and extending mask effectiveness.
2Reliability
If an anti-dust and anti-toxin mask is used to prevent agrichemical inhalation, then the filter provides good protection, but the filter is easily soaked by agrichemical sprays, requiring frequent replacement
Solution Approach 1:
The filtering function is segmented into two stages: the spray filter tube handles liquid droplet capture with its conical protrusions, while the anti-dust/anti-toxin filter handles vapor filtration. This segmentation protects the anti-dust filter from direct liquid contact, extending its service life and reducing replacement frequency.
Solution Approach 2:
The spray filter tube acts as a protective intermediary that intercepts liquid agrichemical sprays before they reach the anti-dust filter. The conical protrusions on the spray filter tube's inner surface trap liquid droplets through impact and adhesion, preventing them from saturating the anti-dust filter and extending mask wearing time.
3Ease of operation
If the respiration port is positioned at the front of the mask, then inhalation is convenient, but agrichemicals can enter the mask when spraying upwards
Solution Approach 1:
Instead of positioning the respiration port at the front for convenience, the port is inverted to the bottom of the mask body. This inversion prevents liquid agrichemical sprays from entering during upward spraying operations, as liquids naturally drain downward away from the bottom-positioned port.
Solution Approach 2:
The bottom-positioned respiration port converts the harmful effect of upward spraying into a beneficial drainage mechanism. Liquid agrichemicals that enter the mask interior naturally drain toward the bottom port and exit externally, preventing accumulation and inhalation of liquid droplets while maintaining breathable air flow.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution extends the mask's wear time by preventing agrichemical soaking of the filters, allows easy replacement and cleaning, and effectively prevents agrichemical inhalation, reducing pesticide poisoning risks and improving safety during spraying operations.
Implementation Method 1
a spray filter tube (220) configured to be detachably coupled to the anti-dust and anti-toxin filter tube (120), configured to have a spray filter (223) disposed in an inside of the spray filter tube (220)
Implementation Method 2
an anti-dust and anti-toxin filter tube (120) configured to be disposed in an outside of the inhalation inlet port (110) of the mask main body (114) to be coupled to the inhalation inlet port (110), and configured to have an anti-dust and anti-toxin filter (113) disposed in an inside of the anti-dust and anti-toxin filter tube (120)
Implementation Method 3
the spray filter tube is detachably coupled to prevent direct contact and is easily replaceable and cleanable, and the respiration port is positioned at the bottom to prevent agrichemical ingress even when spraying upwards
Data Source
AI summary
An agrichemical spray mask according to the present invention comprises: a main body (114) which is worn hermetically attached to the face and has an inhalation inlet port (110) and an exhalation outlet port (112); an anti-dust and anti-toxin filter tube (120) which is provided on the outside of the inhalation inlet port (110) of the main body (114) of the mask so as to link to the inhalation inlet port and is provided with an anti-dust and anti-toxin filter (113); and a spray filter tube which is separably fastened to the anti-dust and anti-toxin filter tube (120), has a spray filter (223) provided on the inside thereof, and has a respiration port (220a). In the present invention, because two-stage filtering is used to ensure that agrichemical sprays are not breathed in via the human respiratory organs and at the same time the filter is not much soaked by the agrichemicals, it follows that the time over which the mask is used can be extended and, if the filter does become soaked with agrichemicals, the filter can easily be replaced and cleaned.