Liquid injection system for sprayers
First Claim
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1. A liquid injection system comprising:
- a. a housing comprising a high pressure volume and a low pressure volume;
b. a flexible diaphragm mounted within said housing so as to separate said high pressure volume from said low pressure volume;
c. a rod extending through said housing at a substantially right angle to said diaphragm, said rod being attached to said diaphragm such that when said rod reciprocates it displaces said diaphragm in the direction of rod travel so as to pressurize said high pressure volume and to depressurize said low pressure volume;
d. a first inlet line connected to said high pressure volume;
e. a first outlet line connected to said high pressure volume;
f. a second inlet line connected to said low pressure volume;
g. a second outlet line connected to said low pressure volume;
h. a check valve positioned in each of said inlet lines so as to permit liquid to flow into said high pressure or low pressure volume;
i. a check valve positioned in each of said outlet lines so as to permit liquid to flow out of said high pressure or low pressure volume;
j. a motor coupled to said rod so as to cause said rod to reciprocate when said motor is energized;
k. a motor controller coupled to said motor, said controller being capable of controlling the frequency or stroke of the reciprocation of said rod; and
l. an outlet spray device connecting said first and second outlet lines.
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Abstract
The present invention is directed to a system for direct injection of chemicals or other additives in a liquid solution into a spray nozzle. The injection system of the present invention may be mounted adjacent, or in close proximity, to the spray nozzles of a sprayer. The present invention comprises a variable speed/stroke diaphragm pump capable of providing a double pumping action such that a liquid solution may be continuously pumped at a controllable rate to one or more spray nozzles of a sprayer.
63 Citations
20 Claims
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1. A liquid injection system comprising:
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a. a housing comprising a high pressure volume and a low pressure volume; b. a flexible diaphragm mounted within said housing so as to separate said high pressure volume from said low pressure volume; c. a rod extending through said housing at a substantially right angle to said diaphragm, said rod being attached to said diaphragm such that when said rod reciprocates it displaces said diaphragm in the direction of rod travel so as to pressurize said high pressure volume and to depressurize said low pressure volume; d. a first inlet line connected to said high pressure volume; e. a first outlet line connected to said high pressure volume; f. a second inlet line connected to said low pressure volume; g. a second outlet line connected to said low pressure volume; h. a check valve positioned in each of said inlet lines so as to permit liquid to flow into said high pressure or low pressure volume; i. a check valve positioned in each of said outlet lines so as to permit liquid to flow out of said high pressure or low pressure volume; j. a motor coupled to said rod so as to cause said rod to reciprocate when said motor is energized; k. a motor controller coupled to said motor, said controller being capable of controlling the frequency or stroke of the reciprocation of said rod; and l. an outlet spray device connecting said first and second outlet lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A liquid injection system comprising:
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a. a housing comprising a high pressure volume and a low pressure volume; b. a flexible diaphragm mounted within said housing so as to separate said high pressure volume from said low pressure volume; c. a rod extending through said housing at a substantially right angle to said diaphragm, said rod being attached to said diaphragm such that when said rod reciprocates it displaces said diaphragm in the direction of rod travel so as to pressurize said high pressure volume and to depressurize said low pressure volume; d. a first inlet line connected to said high pressure volume; e. a first outlet line connected to said high pressure volume; f. a second inlet line connected to said low pressure volume; g. a second outlet line connected to said low pressure volume; h. a check valve positioned in each of said inlet lines so as to permit liquid to flow into said high pressure or low pressure volume; i. a check valve positioned in each of said outlet lines so as to permit liquid to flow out of said high pressure or low pressure volume; j. a motor coupled to said rod so as to cause said rod to reciprocate when said motor is energized; k. a motor controller coupled to said motor, said controller being capable of controlling the frequency or stroke of the reciprocation of said rod; l. an outlet spray header connected to said first and second outlet lines; m. at least two mixing chambers connected to said outlet spray header; and n. a spray nozzle connected to each of said mixing chambers. - View Dependent Claims (13, 14, 15, 16)
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17. A liquid injection system comprising:
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a. a housing comprising a high pressure volume and a low pressure volume; b. a flexible diaphragm mounted within said housing so as to separate said high pressure volume from said low pressure volume; c. a rod extending through said housing at a substantially right angle to said diaphragm, said rod being attached to said diaphragm such that when said rod reciprocates it displaces said diaphragm in the direction of rod travel so as to pressurize said high pressure volume and to depressurize said low pressure volume; d. a first inlet line connected to said high pressure volume; e. a first outlet line connected to said high pressure volume; f. a second inlet line connected to said low pressure volume; g. a second outlet line connected to said low pressure volume; h. a check valve positioned in each of said inlet lines so as to permit liquid to flow into said high pressure or low pressure volume; i. a check valve positioned in each of said outlet lines so as to permit liquid to flow out of said high pressure or low pressure volume; j. a motor coupled to said rod so as to cause said rod to reciprocate when said motor is energized; k. a motor controller coupled to said motor, said controller being capable of controlling the frequency or stroke of the reciprocation of said rod; l. a mixing chamber connected to said first and second outlet lines; and m. a spray nozzle connected to said mixing chamber. - View Dependent Claims (18, 19, 20)
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Specification