JP2593731B2 - Snow dry feeder and gas-liquid separator - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow-dry supply apparatus and a gas-liquid separator for continuously supplying snow-dry to a container which is packed with snow-dry and delivered to a home in a co-op or the like.

"Conventional technology" Conventionally, home delivery containers filled with snow dry by co-ops are packed with products for each delivery area, and snow dry, which can be produced by discharging liquefied carbon dioxide gas from nozzles while transporting on a belt conveyor, is placed in the home delivery container. A snow-drying feeder for filling is used.

"Problem to be Solved by the Present Invention" A conventional snow dry supply device uses a liquefied carbon dioxide gas supply passage between a liquefied carbon dioxide gas storage tank filled with liquefied carbon dioxide gas and a nozzle from which snow dry is discharged. Supply.

However, since the installation location of the liquefied carbon dioxide storage tank and the installation location of the nozzle are separated by about 100 to 200 m, the liquefied carbon dioxide gas supply passage becomes longer, and liquefied carbon dioxide gas is vaporized on the way to easily generate vaporized carbon dioxide gas. There was a disadvantage.

In addition, when the nozzle is opened from the stopped state, a large amount of vaporized carbon dioxide gas is generated in the liquefied carbon dioxide gas supply passage, so that snow dry does not sufficiently occur at the nozzle, and the home delivery container is sufficiently filled with snow dry. There is a drawback that some home delivery containers cannot be provided.

In view of the above-mentioned conventional disadvantages, the present invention has a long liquefied carbon dioxide gas supply passage from the liquefied carbon dioxide gas storage tank to the nozzle, and supplies the liquefied carbon dioxide gas to the nozzle even when the liquefied carbon dioxide gas is generated in the liquefied carbon dioxide gas supply passage. It is an object of the present invention to provide a snow-drying supply device and a gas-liquid separator which can surely prevent snow-drying and constantly fill a container such as a home delivery container with a constant pressure from a nozzle.

Means for Solving the Problems In order to achieve the above object, the present invention provides a belt conveyor for continuously transferring a container filled with snow dry installed in a room, and a container transferred by the belt conveyor. A gas-liquid separator disposed at the top of the container and capable of discharging the vaporized carbon dioxide gas, and an opening / closing valve having a nozzle at the tip protruding downward from the gas-liquid separator and capable of filling the container with snow dry. A discharge passage for discharging liquefied carbon dioxide in the gas-liquid separator, a liquefied carbon dioxide storage tank filled with liquefied carbon dioxide installed outdoors, etc .; A liquefied carbon dioxide gas supply passage arranged so that the gas-liquid separator side is sequentially higher than the liquefied carbon dioxide gas storage tank to be supplied into the liquid separator constitutes a snow-drying supply device. .

Further, the present invention provides a gas-liquid separation container in which liquefied carbon dioxide gas and vaporized carbon dioxide gas are stored, and a liquefied carbon dioxide gas storage tank in the gas-liquid separation container attached to a portion near the top of the gas-liquid separation container. A supply pipe for supplying liquefied carbon dioxide, a discharge pipe for discharging liquefied carbon dioxide in the gas-liquid separation container attached to a portion near a lower end of the gas-liquid separation container, and an upper end of the gas-liquid separation container A gas discharge pipe provided with a safety valve and a solenoid valve for discharging vaporized carbon dioxide in the gas-liquid separation container attached to a nearby portion, and a float switch attached to the gas-liquid separation container. When the liquefied carbon dioxide gas in the separation container becomes equal to or less than a predetermined amount, the electromagnetic valve is automatically opened to discharge the gasified carbon dioxide gas in the gas-liquid separation container. Liquid separation Constitute a.

“Operation” The snow dry supply device configured as above
When the on-off valve of the discharge passage is opened, the liquefied carbon dioxide gas in the liquefied carbon dioxide gas storage tank passes through the liquefied carbon dioxide gas supply passage, the gas-liquid separator, and the discharge passage, and is discharged as snow dry from the nozzle.

The vaporized carbon dioxide gas generated in the liquefied carbon dioxide gas supply passage is removed by the gas-liquid separator, and is prevented from flowing into the discharge passage.

"Examples of the present invention" Hereinafter, the present invention will be described in detail with reference to examples shown in the drawings.

In the embodiment shown in FIGS. 1 to 3, reference numeral 1 denotes a liquefied carbon dioxide gas storage tank in which liquefied carbon dioxide gas 2 is installed outdoors or the like.

Reference numeral 3 denotes a belt conveyor capable of transporting a home delivery container 4 containing goods installed in a room for each delivery area.

Reference numeral 5 denotes a gas-liquid separator arranged at an upper position of the home delivery container 4 transferred by the belt conveyor 3.

6 is an on-off valve 7 projecting downward from the gas-liquid separator 5
A nozzle 8 for filling snow dry in the delivery container 4 transferred by the belt conveyor 3 for converting snow from liquefied carbon dioxide to snow is attached to the tip of the discharge passage 6. ing.

Reference numeral 9 denotes a liquefied carbon dioxide gas supply passage for supplying the liquefied carbon dioxide gas 2 from the liquefied carbon dioxide gas storage tank 1 into the gas-liquid separator 5. And the gas-liquid separator 5 is disposed so that the gas-liquid separator 5 is higher than the gas-liquid separator 5 so as to automatically flow into the gas-liquid separator 5 into the liquid carbon dioxide gas supply passage 9. 10 are interposed.

As shown in FIGS. 2 and 3, the gas-liquid separator 5 includes a vertically long gas-liquid separator 11 in which the liquefied carbon dioxide gas 2 and the vaporized carbon dioxide gas 2A are stored. A heat insulating material 12 that covers the outer periphery and keeps cool, and the gas-liquid separation container
A supply pipe 13 for supplying liquefied carbon dioxide gas 2 into the gas-liquid separation container 11 attached to a portion near the upper portion of the gasket 11, and a gas-liquid separation container attached to a portion near the lower portion of the gas-liquid separation container 11 A discharge pipe 14 for discharging the liquefied carbon dioxide gas 2 in the discharge passage 6 to the discharge passage 6; A discharge passage 15, a pressure gauge 16, a safety valve 17, a solenoid valve 18, and a flow control opening / closing valve 24 for adjusting the amount of gas to be discharged, which are interposed in the gas discharge passage 15, and a discharge passage 15 mounted in the gas-liquid separation container 11. When the liquefied carbon dioxide gas 2 in the gas-liquid separation vessel 11 becomes a predetermined amount or less, it is turned on, and when it becomes a predetermined amount or more.
The sensor 21 includes a float switch 19 that is turned off and a control box 20 that turns the solenoid valve 18 on and off by turning the float switch 19 on and off.

The snow-drying supply device 22 having the above configuration opens the on-off valve 10 of the liquefied carbon dioxide gas supply passage 9 and the discharge passage 6.
When the on-off valve 7 is opened, the snow dry 23
Is discharged.

At this time, the vaporized carbon dioxide gas 2A generated in the liquefied carbon dioxide gas supply passage 9 accumulates in the gas-liquid separator 5, and when a predetermined amount or more of the vaporized carbon dioxide gas 2A accumulates in the gas-liquid separator 5, ie, When the amount of the liquefied carbon dioxide gas 2 falls below a predetermined amount in the liquid separator 5, the float switch 19 of the sensor 21 is turned on,
The solenoid valve 18 of the gas discharge passage 15 is opened to discharge the vaporized carbon dioxide 2A in the gas-liquid separator 5 to the outside.

For this reason, the gas-liquid separator 5
The liquefied carbon dioxide gas 2 flows into the inside, and the amount of liquefied carbon dioxide gas in the gas-liquid separator 5 increases.

When a predetermined amount or more of the liquefied carbon dioxide gas 2 enters the gas-liquid separator 5, the float switch 19 of the sensor 21 is turned off, and the solenoid valve 18 of the gas discharge passage 15 is closed.

Therefore, by opening the on-off valve 7 of the discharge passage 6, only the liquefied carbon dioxide gas 2 flows in the discharge passage 6, so that the snow dry 23 is reliably discharged from the nozzle 8.

In the above-described embodiment of the present invention, the liquefied carbon dioxide gas supply passage 9 is installed so that the gas-liquid separator 5 side is gradually increased. However, the present invention is not limited to this. By setting the storage capacity of the carbon dioxide gas 2 to be large, even if the liquefied carbon dioxide gas supply passage 9 is arranged substantially in a horizontal direction or the like, even if the vaporized carbon dioxide gas flows into the gas-liquid separation vessel in a relatively large amount, it is discharged. It is possible to efficiently prevent the vaporized carbon dioxide gas from flowing into the passage 6.

"Effects of the present invention" As is clear from the above description, the following effects can be obtained in the present invention.

(1) A belt conveyor for continuously transferring a container to be filled with snow dry installed in a room, and a gas-liquid separator disposed at an upper portion of the container to be transferred by the belt conveyor and capable of discharging vaporized carbon dioxide gas. A discharge passage for discharging liquefied carbon dioxide gas in the gas-liquid separator, the valve including an on-off valve having a nozzle capable of filling snow dry into the container at a tip protruding downward from the gas-liquid separator; A liquefied carbon dioxide storage tank filled with liquefied carbon dioxide, and a liquefied carbon dioxide storage tank for supplying the liquefied carbon dioxide in the liquefied carbon dioxide storage tank to the gas-liquid separator. And the liquefied carbon dioxide gas supply passage, which is arranged so that the vessel side becomes higher in order, so that the vaporized carbon dioxide gas is contained in the liquefied carbon dioxide gas supplied to the nozzle by the gas-liquid separator. It is possible to really prevent. Therefore, it is possible to reliably generate and discharge snow dry from the nozzle. For this reason, it is possible to always fill a constant amount of snow dry in a container such as a home delivery container transported by a belt conveyor.

(2) According to the above (1), a replenishing snow dry is made before the movement of the belt conveyor as in the related art, or a container filled with less snow dry is refilled to change the delivery order. Can be reliably prevented.

(3) By the above (1), the vaporized carbon dioxide gas generated in the liquefied carbon dioxide gas supply passage automatically flows into the gas-liquid separator,
It can be discharged from the gas-liquid separator. Therefore, the liquefied carbon dioxide gas is always flowing into the liquefied carbon dioxide gas supply passage, and it is possible to always generate and discharge snow dry in an optimal state from the opening of the on-off valve.

(4) According to the above (1), since the structure is simple, it can be easily implemented.

(5) Since the safety valve and the solenoid valve are interposed in the gas discharge pipe according to the above (1), vaporized carbon dioxide gas flows into or is generated in the gas-liquid separator, and the internal pressure in the gas-liquid separator is increased. When the pressure rises, the vaporized carbon dioxide gas is discharged by the safety valve, and the pressure in the gas-liquid separator can be kept constant.

In addition, since a certain amount of liquefied carbon dioxide gas is stored in the gas-liquid separator by the sensor and the solenoid valve, liquefied carbon dioxide gas discharged from the discharge pipe can always be reliably discharged in a constant state. In addition, it is possible to reliably prevent the discharge amount from being changed due to a change in the internal pressure in the gas-liquid separator.

(6) Claims 2 and 3 have the same effects as (1) to (5).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing an embodiment of the present invention, FIG. 2 is an explanatory view of a gas-liquid separator, and FIG. 3 is an explanatory view of a main part of the gas-liquid separator. 1: Liquefied carbon dioxide storage tank, 2: Liquefied carbon dioxide, 2A: Vaporized carbon dioxide, 3: Belt conveyor, 4: Delivery container, 5: Gas-liquid separator, 6: Discharge passage, 7: On-off valve, 8: Nozzle , 9: liquefied carbon dioxide gas supply passage, 10: open / close valve, 11: gas-liquid separation container, 12: heat insulating material, 13: supply pipe, 14: discharge pipe, 15: gas discharge passage, 16: pressure gauge, 17: safety valve , 18: Solenoid valve, 19: Float switch, 20: Control box, 21: Sensor, 22: Snow dry supply device, 23: Snow dry, 24: Flow control on / off valve.

Claims (3)

(57) [Claims] 1. A belt conveyor for continuously transferring a container filled with snow dry installed in a room, and a gas-liquid separator capable of discharging vaporized carbon dioxide gas disposed on an upper portion of the container transferred by the belt conveyor. And a discharge passage for discharging liquefied carbon dioxide gas in the gas-liquid separator, comprising an opening / closing valve having a nozzle capable of filling snow dry into the container at a tip protruding downward from the gas-liquid separator. A liquefied carbon dioxide storage tank filled with liquefied carbon dioxide installed outside the room, and a liquefied carbon dioxide storage tank for supplying the liquefied carbon dioxide gas in the liquefied carbon dioxide storage tank to the gas-liquid separator. A liquefied carbon dioxide gas supply passage arranged so that the liquid separator side becomes higher in order. 2. A gas-liquid separation container in which liquefied carbon dioxide gas and vaporized carbon dioxide gas are stored, and a gas-liquid separation container attached to a portion near the top of the gas-liquid separation container. A supply pipe for supplying liquefied carbon dioxide, a discharge pipe for discharging liquefied carbon dioxide in the gas-liquid separation container attached to a portion near the lower end of the gas-liquid separation container,
A gas discharge pipe provided with a safety valve and a solenoid valve for discharging vaporized carbon dioxide gas in the gas-liquid separation container, which is mounted near the upper end of the gas-liquid separation container, and mounted in the gas-liquid separation container. When the liquefied carbon dioxide gas in the gas-liquid separation container is reduced to a predetermined amount or less by the float switch, the solenoid valve is automatically opened to discharge the vaporized carbon dioxide gas in the gas-liquid separation container, and when the liquefied carbon dioxide gas in the gas-liquid separation container is reduced to a predetermined amount or more, A gas-liquid separator comprising a sensor for closing an electromagnetic valve. 3. A gas-liquid separation container in which a liquefied carbon dioxide gas and a vaporized carbon dioxide gas are stored and which is vertically long and whose outer peripheral portion is covered with a heat insulating material, and which is attached to a portion near the top of the gas-liquid separation container. A supply pipe for supplying liquefied carbon dioxide gas from the liquefied carbon dioxide gas storage tank into the gas-liquid separation container, and a liquefied carbon dioxide gas in the gas-liquid separation container attached to a portion near the lower end of the gas-liquid separation container. A discharge pipe for discharging, a gas discharge pipe provided with a safety valve and a solenoid valve for discharging vaporized carbon dioxide in the gas-liquid separation container attached to a portion near the upper end of the gas-liquid separation container, When the liquefied carbon dioxide gas in the gas-liquid separation container is reduced to a predetermined amount or less by a float switch mounted in the liquid separation container, the solenoid valve is opened to automatically discharge the gasified carbon dioxide gas in the gas-liquid separation container, When it exceeds a certain amount Gas-liquid separator, characterized by comprising a closing serial solenoid valve sensor.