Tank pressurization control for air carts
First Claim
1. A pneumatic valve for an agricultural product distribution system, comprising:
- a fan inlet configured to be fluidly coupled to an air source configured to supply an air stream into a primary line, wherein the primary line is configured to facilitate distributing a granular product to an agricultural implement by guiding the air stream from a first section of the primary line to a second section of the primary line, wherein the first section has a larger cross-sectional area than the second section;
a tank outlet configured to be fluidly coupled to a storage tank, wherein the storage tank is configured to store the granular product and to facilitate flow of the granular product to the second section of the primary line;
a shuttle comprising a shuttle hole;
a control pressure inlet configured to be fluidly coupled to the second section of the primary line; and
a diaphragm having a first side and a second side, the first side coupled to the shuttle, wherein the first side of the diaphragm is exposed to a static pressure in the storage tank through the tank outlet, and the second side of the diaphragm is exposed to the static pressure in the second section of the primary line through the control pressure inlet, wherein the diaphragm is configured to move toward the tank outlet such that the shuttle hole is aligned with the fan inlet when the static pressure in the storage tank is not greater than the static pressure in the second section of the primary line by a threshold amount.
2 Assignments
0 Petitions
Accused Products
Abstract
A pneumatic valve for an agricultural product distribution system includes a fan inlet, a tank outlet, a shuttle, a control pressure inlet, and a diaphragm. The fan inlet is coupled to an air source that supplies an air stream into a primary line, which facilitates distributing a granular product to an agricultural implement by guiding the air stream from a first section to a second section of the primary line, the first section having a larger cross-sectional area than the second section. A tank outlet is fluidly coupled to a storage tank. The control pressure inlet is fluidly coupled to the second section of the primary line or to a meter housing. The diaphragm has a first side that is coupled to the shuttle and is exposed to static pressure in the storage tank and a second side that is exposed to the static pressure in the second section of the primary line or the meter housing, and aligns a shuttle hole of the shuttle with the fan inlet when the static pressure in the storage tank is not greater than the static pressure in the second section of the primary line or the meter housing by a threshold amount.
49 Citations
14 Claims
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1. A pneumatic valve for an agricultural product distribution system, comprising:
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a fan inlet configured to be fluidly coupled to an air source configured to supply an air stream into a primary line, wherein the primary line is configured to facilitate distributing a granular product to an agricultural implement by guiding the air stream from a first section of the primary line to a second section of the primary line, wherein the first section has a larger cross-sectional area than the second section; a tank outlet configured to be fluidly coupled to a storage tank, wherein the storage tank is configured to store the granular product and to facilitate flow of the granular product to the second section of the primary line; a shuttle comprising a shuttle hole; a control pressure inlet configured to be fluidly coupled to the second section of the primary line; and a diaphragm having a first side and a second side, the first side coupled to the shuttle, wherein the first side of the diaphragm is exposed to a static pressure in the storage tank through the tank outlet, and the second side of the diaphragm is exposed to the static pressure in the second section of the primary line through the control pressure inlet, wherein the diaphragm is configured to move toward the tank outlet such that the shuttle hole is aligned with the fan inlet when the static pressure in the storage tank is not greater than the static pressure in the second section of the primary line by a threshold amount. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A pneumatic valve for an agricultural product distribution system, comprising:
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a fan inlet configured to be fluidly coupled to an air source configured to supply an air stream into a primary line, wherein the primary line is configured to facilitate distributing a granular product to an agricultural implement by guiding the air stream from a first section of the primary line to a second section of the primary line, wherein the first section has a larger cross-sectional area than the second section; a tank outlet configured to be fluidly coupled to a storage tank, wherein the storage tank is configured to store the granular product and to facilitate flow of the granular product to the second section of the primary line; a shuttle comprising a shuttle hole; a control pressure inlet configured to be fluidly coupled to a meter housing; and a diaphragm having a first side and a second side, the first side coupled to the shuttle, wherein the first side of the diaphragm is exposed to a static pressure in the storage tank through the tank outlet, and the second side of the diaphragm is exposed to the static pressure in the meter housing through the control pressure inlet, wherein the diaphragm is configured to move toward the tank outlet such that the shuttle hole is aligned with the fan inlet when the static pressure in the storage tank is not greater than the static pressure in the meter housing by a threshold amount. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification