NZ734830B2 - Gel dispenser and method of propelling gel - Google Patents
Gel dispenser and method of propelling gel Download PDFInfo
- Publication number
- NZ734830B2 NZ734830B2 NZ734830A NZ73483017A NZ734830B2 NZ 734830 B2 NZ734830 B2 NZ 734830B2 NZ 734830 A NZ734830 A NZ 734830A NZ 73483017 A NZ73483017 A NZ 73483017A NZ 734830 B2 NZ734830 B2 NZ 734830B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- dispensing
- dispensing apparatus
- piston
- gel
- aliquot
- Prior art date
Links
- 239000000126 substance Substances 0.000 claims abstract 10
- 230000004913 activation Effects 0.000 claims 5
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 241000607479 Yersinia pestis Species 0.000 claims 1
- 239000004480 active ingredient Substances 0.000 claims 1
- 239000003337 fertilizer Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 230000002363 herbicidal effect Effects 0.000 claims 1
- 239000004009 herbicide Substances 0.000 claims 1
- 239000002917 insecticide Substances 0.000 claims 1
- 239000000575 pesticide Substances 0.000 claims 1
- 238000007796 conventional method Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Abstract
dispensing apparatus (100), comprising a dispensing chamber (6) configured to receive a gel. A metering means (7 and 9) is configured to meter a first aliquot of gel into the dispensing chamber and a charge substance operatively coupled to the dispensing chamber is used to propel the first aliquot out of a nozzle (5). As the first aliquot is propelled from the dispensing apparatus, the first aliquot is not substantial dispersed along the direction of travel, but is dispersed perpendicular to the direction of travel. The sheet of gel may or may not be perfectly flat but the volume of gel is distributed evenly across the target area. Dispensing gel in this manner advantageously requires relatively less gel to cover a target surface area when compared to the conventional method of using a continuous water-based spray , as the target surface gets an even coat of gel, and the amount of gel the surface receives is known.
Claims (24)
1. A sing apparatus, comprising: a dispensing chamber configured to receive a gel; 5 a metering means configured to meter a first aliquot of gel into the dispensing chamber; a charge substance operatively coupled to the dispensing r, the charge substance being a fluid; a nozzle; wherein, in use, the charge substance is used to propel the first aliquot out of the nozzle; and 10 wherein as the first aliquot is propelled from the dispensing apparatus, the first aliquot is not substantially dispersed along the direction of travel, but is dispersed by the nozzle angularly to the direction of travel.
2. The dispensing apparatus as claimed in claim 1, wherein the metering means is configured to 15 deliver a second aliquot into the dispensing chamber after the first aliquot has been propelled out of the , the metering means comprising a piston fluidly sealed within a housing.
3. The dispensing tus as claimed in claim 2, wherein the housing and the piston define the dispensing chamber as a volume bounded by the housing and the piston.
4. The dispensing apparatus as claimed in claim 2 or claim 3, wherein in use the piston is le to travel between a retracted on and an extended position, wherein if the piston is moved from the retracted position to the extended on, the piston forces the first t to be propelled out through the nozzle, and wherein if the piston is moved from the extended 25 on to the retracted position, the piston draws the second aliquot into the dispensing chamber.
5. The dispensing apparatus as claimed claim 4, wherein the dispensing apparatus comprises means to adjust the length of travel of the piston n the retracted on and the 30 extended position.
6. The dispensing apparatus as claimed in claim 5, wherein the piston comprises a stem that extends out of the housing, and the means to adjust the length of travel of the piston is a stop on the stem configured to provide a limit on the length of travel of the piston in the direction of the extended position.
7. The dispensing apparatus as claimed in claim 6, wherein the stop is a nut that abuts an outer 5 surface of the housing when the piston is in the extended position.
8. The dispensing apparatus as claimed in claim 7, wherein the spacing of the nut from the outer surface of the housing can be adjusted to adjust the limit on the length of travel of the piston in the direction of the extended position.
9. The dispensing apparatus as claimed in any one of claims 4-8, wherein the dispensing apparatus comprises biasing means to bias the piston s the retracted position.
10. The dispensing apparatus as claimed in claim 9, wherein the biasing means is a spring acting 15 between the nut and the outer surface of the housing.
11. The dispensing apparatus as claimed in any one of claims 4-10, wherein the dispensing apparatus comprises a charge substance inlet to the housing on the opposite side of the piston to the dispensing chamber.
12. The dispensing apparatus as claimed in claim 11, the supply of the charge substance is provided at a pressure above atmospheric re.
13. The dispensing apparatus as claimed in any one of claims 11-12, wherein the dispensing 25 tus comprises a one lve at the charge substance inlet configured to allow the charge substance to enter the housing.
14. The sing apparatus as claimed in any one of claims 4-13, wherein the dispensing apparatus comprises a gel inlet to the housing on the same side of the piston as the sing 30 chamber, and a one-way valve configured to allow a gel to enter the dispensing r.
15. The dispensing apparatus as d in any one of claims 4-14, wherein the nozzle ses a one-way valve configured to allow each aliquot to pass through the nozzle.
16. The dispensing apparatus as claimed in claim 15, wherein the second aliquot is delivered into the dispensing chamber as a result of the piston moving from the extended position to the retracted on causing a reduction in pressure within the dispensing chamber drawing the gel into the dispensing chamber.
17. The dispensing apparatus as claimed in any one of claims 1-16, n the dispensing apparatus comprises an activation means configured to cause the charge substance to enter the housing. 10
18. The dispensing apparatus as claimed in claim 17, wherein the activation means is a valve configured to, upon activation, allow the charge substance to pass h the valve.
19. The dispensing apparatus as claimed in claim 17 or 18, wherein the activation means is activated by a hand-operated trigger.
20. The dispensing tus as claimed in claim 17 or 18, wherein the activation means is activated by a remotely controlled solenoid.
21. A method of propelling a gel, wherein the method comprises propelling the gel from a 20 dispensing apparatus substantially as claimed in any one of claims 1-20.
22. The method of claim 21, wherein the gel comprises an active ingredient selected from one or more of a herbicide, pesticide, insecticide, fertiliser, ity of seeds, plurality of biological pest control agents, or a ng agent.
23. A dispensing apparatus substantially as hereinbefore described with nce to any one of the embodiments shown in the figures.
24. A method of propelling a gel substantially as hereinbefore described with nce to any one 30 of the embodiments shown in the figures. 6a 6 7 8
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ734830B2 true NZ734830B2 (en) | 2025-03-04 |
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