Sprayer Mixer Suction Lance and Tangential Injection Nozzle
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Solution Overview
Problem
The existing methods for mixing liquid and solid products in agricultural sprayers are physically demanding and pose environmental and health risks due to manual handling and potential splashing, with inefficient dispersion and clogging issues.
Innovation Solution
A mixer that allows direct suction of the solid product from its original container using a suction lance, featuring a tangentially or annularly injected liquid nozzle to create a vortex, a frustoconical bowl for enhanced mixing, and a venturi-effect suction system to prevent clogging and promote homogeneous mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual handling and dumping of solid product bags is used, then the operation is simple and requires minimal equipment, but it is physically demanding, time-consuming, and poses environmental and health risks
Solution Approach 1:
The patent employs a suction lance connected to a vacuum system to aspirate solid products from containers and transport them through hoses into the spray tank. This pneumatic approach replaces manual handling, allowing rapid incorporation of multiple containers without physical strain on the operator, thus improving productivity while maintaining ease of operation through automated suction and transport mechanisms
2Device complexity
If manual dumping of solid product is performed, then no additional equipment is needed, but it creates pollution risks and operator exposure to harmful substances
Solution Approach 1:
The closed pneumatic system aspirates solid products through sealed hoses, preventing product spillage and dust dispersion into the environment. The operator remains isolated from direct contact with harmful substances, as the suction lance handles all interactions with the solid product containers, thereby eliminating pollution and exposure risks while using relatively simple equipment
Solution Approach 2:
The suction lance acts as an intermediary between the operator and the solid product containers. It performs all functions of product handling, transport, and deposition into the tank, shielding the operator from direct exposure to harmful substances and preventing environmental contamination, thus resolving the contradiction between equipment simplicity and safety
3Productivity
If solid product is directly dumped into the tank, then the process is quick, but it causes product loss through spilling and inefficient mixing
Solution Approach 1:
The pneumatic suction system precisely controls the transport and deposition of solid products into the tank, eliminating spilling and overflow losses. The controlled aspiration and directed delivery ensure complete product transfer from containers to tank, maintaining high incorporation speed while preventing substance loss
4Device complexity
If liquid is injected axially into the mixing bowl, then the injection is simple, but it causes liquid to reassemble the suction lance and creates clogging
Solution Approach 1:
The injection nozzle is positioned asymmetrically at the periphery of the mixing bowl rather than axially at the center. This off-center positioning directs liquid flow away from the suction lance, preventing liquid from reassembling the lance and causing clogging, while maintaining a relatively simple injection system
5Device complexity
If powdery products are mixed manually in the tank, then the mixing process is simple, but it results in non-homogeneous mixture and wall clogging
Solution Approach 1:
The mixing system incorporates vibration or agitation mechanisms that actively mix powdery products with liquid in the bowl, ensuring homogeneous distribution and preventing product adhesion to walls. This mechanical action achieves precise mixing quality while maintaining a relatively simple overall process
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
Reduces manual labor, minimizes environmental pollution, and ensures a homogeneous mixture by preventing clogging and promoting efficient aspiration and evacuation of the mixture.
Implementation Method 1
a second suction input which connects the evacuation duct of the bowl for Create a depression in the cuvette by venturi effect
Implementation Method 2
a suction lance (18) which extends from a suction tip (20) adapted to suck the product (12)
Implementation Method 3
the injection nozzle of the liquid extends generally tangentially to the axis of revolution of the bowl, so as to inject the liquid onto the wall of the bowl by printing a vortex movement
Data Source
Figure 1~5
AI summary
The invention relates to a mixer (10) for drawing and mixing a solid product (12), such as a powder, with a liquid (14) from a tank (16), characterised in that it includes a drawing wand (18) which has a drawing tip (20) suitable for drawing said powder product (12), a mixing vat (32) which has a rotation shape delimited by a side wall (36), the discharge tip (22) of the drawing wand (18) leading into the top (38) of the vat (32) so as to inject the product (12) into the vat (32), a hydraulic circuit (46) designed to circulate the liquid (14) between the tank (16) and the vat (32), said circuit (46) including at least one injection duct (48) which includes at least one injection nozzle (52) leading into the top (38) of the vat (32) so that the liquid (14) from the tank (16) flows over the side wall (36) of the vat (32).