Configurations of inlet and outlets of air filled auxiliary tank of air seeders

Patent metadata

Field	Value
Publication number	US-9975710-B2
Application number	US-201715645066-A
Country	US
Kind code	B2
Filing date	Jul 10, 2017
Priority date	Aug 21, 2014
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A system for replenishing the supply of a particulate agricultural product in the tank of an air cart. A mixture of air and product comes out of a venturi delivery system and enters in a multiplicity of inlet hoses. Then the product enters into inlet tubes of various lengths and release angles from which product particles are gently spread strategically forming a pile that is more or less horizontal to ensure even feeding of meters during dispensing operations. Then the air exits through one or more fine screens to avoid product escaping as well and is conveyed through the exhaust hoses until reaching an air diffuser. The air diffuser has a series of varying size holes or louvers at the bottom so the air can come out at a uniform low velocity which minimizes any discomfort to nearby operators.

First claim

What is claimed is:

1. A method of replenishing a supply of a particulate agricultural material in a tank of a pneumatic agricultural material delivery system, by providing an air conveying system for receiving the particulate agricultural material from an agricultural material reservoir and delivering the particulate agricultural material to the tank to replenish the particulate agricultural material in the tank, the method comprising:
supplying air from an air flow source to the agricultural material reservoir;
passing the supplied air through a venturi region to create a region of increased air velocity and reduced air pressure for ingesting particulate agricultural material from the agricultural material reservoir and providing a flow of air entrained particulate agricultural material, the venturi region including an inlet and at least one venturi coupled to the air flow source, an inlet for receiving the particulate agricultural material from the agricultural material reservoir, and an outlet for providing the particulate agricultural material from the agricultural material reservoir entrained within air flow from the air flow source;
operating a three position valve located in the venturi region to move the air entrained particulate agricultural material to the tank, wherein placing the valve in a first position drains particulate agricultural material front the agricultural material reservoir only, placing the valve in a second position drains from both the agricultural material reservoir and the venturi region outlet, and placing the valve in a third position pressurizes the tank and permits the air entrained particulate agricultural material to move through the venture region outlet;
conveying the air entrained particulate agricultural material through a plurality of supply conduits from the venturi region outlet and delivering the air entrained particulate agricultural material to the tank, each supply conduit extending into the tank;
releasing the air entrained particulate agricultural material from multiple spaced apart locations within the tank to provide a uniform distribution of the particulate agricultural material within the tank; and
venting excess air from the tank.

2. The method of claim 1 , wherein the multiple spaced apart locations are all near a top of the tank and excess air is vented from locations near opposite tank ends.

3. The method of claim 1 , wherein the step of venting includes passing the excess air from the tank downward to an air diffuser beneath the tank.

4. The method of claim 1 , wherein the step of venting includes sieving the excess air to prevent the egress of agricultural product from the tank.

5. The method of claim 1 , wherein the step of releasing includes directing the air entrained particulate agricultural material from the multiple spaced apart locations at various angles.

Assignees

• Cnh Ind Canada Ltd

Inventors

• Roberge Martin J
• Stuart Graham Douglas

Classifications

• B65G53/10

  with pneumatic injection of the materials by the propelling gas · CPC title

• B65G69/0491

  with a pneumatic feeding conveyor · CPC title

• B65G53/16 Primary

  Gas pressure systems operating with fluidisation of the materials · CPC title

• B65G53/60

  Devices for separating the materials from propellant gas · CPC title

• A01C15/006

  Hoppers · CPC title