[특허]Dispenser for granular material with a valve assembly

A.C. Dispensing Equipment Inc.

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Dispenser for granular material with a valve assembly

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A47J-031/40 B65D-083/06 F16K-007/06
출원번호	US-0928381 (2015-10-30)
등록번호	US-9782034 (2017-10-10)
발명자 / 주소	Williston, Kyle Tofflemire, Jeffrey MacGillivary, Ken MacLean, Ian
출원인 / 주소	A.C. Dispensing Equipment Inc.
대리인 / 주소	Borden Ladner Gervais LLP
인용정보	피인용 횟수 : 0 인용 특허 : 17

초록
▼

Described herein is an apparatus and method for dispensing a granular material. The apparatus includes a hopper for storing the granular material and a feeder for delivering the granular material through a hopper outlet to a dispensing tube that is configured to guide the granular material towards a dispensing outlet. The valve assembly is actuatable to pinch and unpinch the dispensing tube, thereby blocking and unblocking the passage of material. The valve assembly is configured to receive a resilient portion of the dispensing tube, and is actuatable to pinch the resilient portion of the dispensing tube to inhibit passage of the granular material to the dispensing port, and to unpinch said resilient portion of the dispensing tube to enable passage of the granular material through the dispensing port. The dispensing tube may be sloped between the hopper outlet and the valve assembly. Sloping of the dispensing tube promotes sliding of the granular material along an inner surface of the dispensing tube. This focuses the flow profile of the granular material, and reduces the scattering of granular material outside the vessel.

대표
청구항
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1. A dispensing apparatus configured to dispense a granular material, comprising: a hopper configured to store the granular material, the hopper comprising a lower base;an auger configured to deliver the granular material in the hopper from a hopper outlet, the auger disposed in the lower base of the hopper;an auger cover disposed at the lower base of the hopper and disposed between the auger and the cavity defined by the hopper so that the lower base and the auger cover cooperate to enclose an end portion of the auger;a dispensing tube configured to receive the granular material from the hopper outlet and configured to guide the granular material towards a dispensing port; anda valve assembly coupled to the dispensing tube and positioned between the hopper outlet and the dispensing port, the valve assembly configured to receive a resilient portion of the dispensing tube,the valve assembly being actuatable to pinch the resilient portion of the dispensing tube to inhibit passage of the granular material to the dispensing port, and to unpinch said resilient portion of the dispensing tube to enable passage of the granular material through the dispensing port. 2. The dispensing apparatus according to claim 1, configured to feed a predetermined amount of the granular material from the hopper through the hopper outlet into the dispensing tube wherein the feeding begins when the resilient portion of the dispensing tube is pinched by the valve assembly, and further configured to actuate the pinch valve assembly to unpinch the resilient portion before feeding of the entire predetermined amount of the granular material stops. 3. The dispensing apparatus according to claim 1, wherein the dispensing tube has a curved portion between the hopper outlet to the valve assembly for guiding the granular material in a curved path from the hopper outlet to the valve assembly. 4. The dispensing apparatus according to claim 1, wherein the auger is oriented substantially horizontally relative to a surface supporting the dispensing apparatus. 5. The dispensing apparatus according to claim 1, wherein the auger is oriented at an angle relative to a surface supporting the dispensing apparatus. 6. The dispensing apparatus according to claim 5, wherein the angle is about 18 degrees. 7. The dispensing apparatus according to claim 1, comprising an auger bushing disposed at the end portion of the auger enclosed by the auger cover, wherein the auger cover is configured to direct the granular material in the hopper away from the end portion of the auger to reduce exposure of the auger bushing to the granular material. 8. The dispensing apparatus according to claim 7, wherein the auger bushing is a rear bushing and the apparatus is configured to rotate the auger to move the granular material toward the hopper outlet and away from the rear bushing. 9. The dispensing apparatus according to claim 8, wherein the auger is oriented substantially horizontally relative to a surface supporting the dispensing apparatus. 10. The dispensing apparatus according to claim 1, wherein the valve assembly is a pinch valve assembly and wherein the valve assembly comprises: a body comprising a stop plate; anda pinch bar assembly configured to move a pinch bar between a closed position and a dispensing position;wherein, when the pinch bar is in the closed position the pinch bar presses against the resilient portion of the dispensing tube thereby deforming the resilient portion of the dispensing tube against the stop plate and inhibiting the passage of the granular material to the dispensing port, andwhen the pinch bar is in the open position, the pinch bar is moved away from the stop plate, allowing the passage of the granular material through the dispensing port. 11. The dispensing apparatus according to claim 10, wherein the body further comprises a valve block, the valve block defining a passage configured to receive the resilient portion of the dispensing tube, and wherein the stop plate is defined by an inner wall of the valve block defining the passage. 12. The dispensing apparatus according to claim 11, wherein the valve block further comprises a channel substantially perpendicular to the defined passage, the channel for receiving the pinch bar and aligning the pinch bar with the stop plate. 13. The dispensing apparatus according to claim 1, wherein the auger cover is shaped and positioned so that the auger rotatingly abuts the auger cover. 14. A method of dispensing a granular material, the method comprising: providing a dispensing apparatus comprising a hopper for storing the granular material, an auger disposed in a lower base of the hopper, and an auger cover disposed at the lower base of the hopper and disposed between the auger and the cavity defined by the hopper so that the lower base and the auger cover cooperate to enclose an end portion of the auger;feeding the granular material using the auger from the hopper through a hopper outlet into a dispensing tube where a resilient portion of the dispensing tube is pinched closed by a pinch valve;opening the pinch valve to dispense the granular material through a dispensing port in the dispensing tube; andclosing the pinch valve to inhibit the passage of the granular material through the dispensing tube to a dispensing port. 15. The method according to claim 14, wherein the granular material is a predetermined amount of the granular material. 16. The method of claim 15, wherein opening includes opening the valve before feeding of the entire predetermined amount of the granular material stops. 17. The method according to claim 14 wherein the step of closing of the valve comprises actuating a pinch bar to pinch a resilient portion of the dispensing tube, and wherein the step of opening the valve comprises actuating the pinch bar to unpinch the resilient portion of the dispensing tube to enable passage of the granular material through the dispensing port. 18. The method according to claim 14, wherein the granular material travels along a sloped path from the hopper outlet to the valve. 19. The method according to claim 14, wherein the end portion of the auger at which the auger cover is provided comprises a rear auger bushing, and wherein the feeding comprises rotating the auger to move the granular material toward the hopper outlet and away from the rear auger bushing. 20. The method according to claim 19, wherein the auger is oriented substantially horizontally relative to a surface supporting the dispensing apparatus.

인용문헌 (17)

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Dispenser for granular material with a valve assembly

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Dispenser for granular material with a valve assembly

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