KR101538471B1 - Spray type cleaning device using dry ice - Google Patents

Abstract

The present invention provides a dry ice spray-type cleaning device having a distribution structure to minimize remnants caused by an attachment of dry ice at a supply part to distribute and spray a predetermined amount of dry ice pellets. The dry ice spray-type cleaning device of the invention comprises: a hopper which is provided with a discharge port at a lower end thereof, accommodates dry ice pellets, and discharges the dry ice pellets through the discharge port; a distribution block which is provided with a pellet supply port coupled to the discharge port on one side thereof such that the dry ice pellets fall and are supplied from the hopper, is provided with a compressed air supply port to which compressed air is supplied, on the other side, and is provided with a compressed air outlet which is positioned under the compressed air supply port and through which the compressed air flows out; a distribution disc which is installed in a horizontal disc shape in an accommodation space in the distribution block to move the dry ice pellets supplied from the discharge port to a position between the compressed air supply port and the compressed air outlet, by a predetermined amount; and a drive device which is provided with a rotary shaft coupled to a vertical center shaft of the distribution disc and drives the distribution disc to rotate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dry ice-

The present invention relates to a dry ice spray type cleaning apparatus, and more particularly, to a cleaning apparatus for spraying particles such as dry ice pellets together with compressed air by a predetermined amount continuously to remove foreign matter on the surface of a cleaning object such as a mold.

The dry ice spray type cleaning device is a device that cleans various machinery and facilities by spraying particles of dry ice with compressed air at high speed.

Such a dry ice spray type cleaning device ejects hard dry ice particles which are harmless to industrial facilities and environment at a high speed and sublimes into harmless gas immediately upon collision with the surface to remove only foreign substances without damaging the washing surface, Do not leave pollutants or moisture.

Therefore, the dry ice cleaning method can extend the service life of the equipment, reduce the time required for the cleaning operation, and the time and cost required to collect and treat the secondary contaminants generated by the conventional cleaning, Can be saved.

Fig. 1 shows such a conventional dry ice spray type cleaning apparatus.

Referring to FIG. 1, a rotor 3 is installed under the outlet of a hopper 2 so as to be rotatable. The rotor 3 is formed in a disk shape, and is provided with a dry ice pellet The supply grooves 3a are formed.

In the air supply pipe 8, compressed air is introduced by the compressor 9, and the dry ice pellets supplied from the supply groove 3a are discharged to the other side by the compressed air.

When the rotational force is transmitted to the rotor 3, the rotor 3 is rotated, and the dry ice pellets are discharged from the hopper 2 and filled in the supply groove 3a formed in the outer periphery.

The dry ice pellets filled in the supply grooves 3a fall when the rotor 3 rotates and the supply grooves 3a face downward. The dropped dry ice pellets are generated in the compressor 9, (8), and can be injected strongly through the nozzle unit (5).

In such a conventional dry ice spraying apparatus, the rotor 3 rotates and the dry ice pellet drops down at a position where the supply groove 3a is downward. However, the supply groove 3a is concave The dry ice pellets adhere to the inner surface of the supply groove 3a and do not fall off.

This is because in the conventional dry ice spray type cleaning device, some compressed air is guided to the supply groove 3a to induce the falling of the dry ice pellets. However, since the supply groove 3a is small and the contact surface with the dry ice pellet is wide, There is a problem that the dry ice pellets attached to the supply grooves 3a are not easily dropped.

As a result, the dry ice pellets attached to the supply grooves 3a of the rotor 3 interfere with the continuous supply of the dry ice pellets by the rotor 3, thus reducing the efficiency of the cleaning device.

In addition, in the conventional dry ice spray type cleaning apparatus, the dry ice pellets or particles injected into the hopper 2 adhere to each other and become entangled with each other, so that they are not discharged downward, and supply to the rotor 3 is not smooth.

In order to solve this problem, conventionally, a vibrator is attached to the outer surface of the hopper 2, vibration is applied to the dry ice pellet to vibrate in the hopper 2, So that it can smoothly occur.

However, vibrations due to the operation of the vibrator are transmitted to other structures through the hopper 2, thereby deteriorating the durability and causing excessive noise, thereby deteriorating the working environment.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a dry ice pellet having a distribution structure capable of minimizing the occurrence of residue due to the attachment of dry ice, And to provide a spray type cleaning apparatus.

Another object of the present invention is to provide a dry ice spray type cleaning device having a structure in which dry ice pellets or particles in a hopper can be smoothly discharged without being entangled with each other without causing excessive vibration and noise.

According to the present invention, there is provided a dry ice spray type cleaning apparatus comprising: a hopper provided with a discharge port at a lower end thereof for receiving a dry ice pellet and discharging the dry ice pellet through the discharge port; and a pellet supply port, A distribution block provided with a compressed air supply port to be supplied downward from the hopper and supplied with compressed air at the other side and a compressed air outlet port to be located below the compressed air supply port and through which compressed air flows, A distribution disk disposed in a receiving space inside the block in a horizontal disc shape and for moving the dry ice pellets supplied from the discharge port by a predetermined amount to a position between the compressed air supply port and the compressed air outlet; A rotary shaft coupled to a vertical central axis, And a plurality of through holes for receiving and receiving the dry ice pellets from the pellet feed ports are disposed in the distribution disc, the distribution discs being disposed around the center axis, Each of the through-holes supplied with the dry ice pellets rotated around the axis moves to a position between the compressed air supply port and the compressed air outlet, and at that position, compressed air in the compressed air supply port passes through the through- And is injected into the compressed air outlet together with the ice pellet.

Further, in the present invention, the distribution block is provided with a hot air supply path for supplying hot air to the accommodating space, the hot air supply path is connected to a blower and a heater, and air supplied from the blower is heated through the heater, Closing valve is provided in the discharge port of the hopper and the controller for controlling the blower, the heater, and the on-off valve is further provided, Closing the on-off valve and operating the blower and the heater to supply the hot air to the containing space.

Further, the present invention is characterized in that a stirring blade for preventing entanglement of the dry ice pellets housed in the hopper is provided, and the stirring blade is coupled to the rotating shaft to receive rotational force.

In addition, the present invention is characterized in that a filter net is installed horizontally so that the dry ice pellets pass downwardly into the hopper, and the rotating shaft extends to the inside of the hopper and rotates, The stirring blade includes a first stirring blade coupled to an upper end of the rotating shaft and rotating together with the rotating shaft at an upper side of the drawing net, and a second stirring blade coupled to the rotating shaft at a lower side of the drawing net, 2 stirring wings.

Further, the present invention is characterized in that, on the upper surface of the distribution disk, a hot-air flow path is formed in the form of an annular bore formed around the central axis of the distribution disk, and a radial valley The hot air supply path is located above the hot air flow path and supplies hot air to the hot air flow path.

The dry ice spray type cleaning apparatus according to the present invention is provided with a distribution disk provided in a horizontal disk shape and the distribution disk moves the dry ice pellets by a predetermined amount to a position between the compressed air supply port and the compressed air outlet, And the structure is such that the compressed air in the supply port passes through the through hole from the upper side to the lower side and pushes out the dry ice pellet and injects it.

Accordingly, the structure in which the inner surface of the through-hole of the distribution disk has a small area in contact with the dry ice pellets, and the dry ice pellet accommodated in the through-hole is pushed out from the upper side in the downward direction, The inverse bar and the dry ice pellets can be easily discharged without remaining in the through-holes of the dispensing disc, thereby improving the efficiency of the washing apparatus.

In the dry ice spray type cleaning apparatus according to the present invention, since the hot air supply device for supplying hot air to the space for accommodating the distribution block is installed, when the distribution disk is attached to the distribution block (inner surface of the accommodation space) , The freezing is solved to prevent the operation from being stopped or interrupted.

In addition, the dry ice spray type cleaning apparatus according to the present invention is provided with a stirring blade for preventing the dry ice pellets contained in the hopper from being entangled. As a result, the dry ice pellets are relatively moved relative to each other while the stirring blades are rotated, so that the dry ice pellets are prevented from being entangled and smooth discharge through the discharge port can be induced. Thus, the installation of the conventional vibrator is unnecessary, It is also possible to prevent damage from noise and vibration.

Particularly, since the first stirring blade provided on the upper side of the sieve mesh and the second stirring blade provided on the lower side of the sieve mesh are arranged so that the dry ice pellets are not tangled with each other through the sieve mesh, The discharge of the pellets can be performed more smoothly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a conventional dry ice spray type cleaning apparatus;
2 is a perspective view showing the outer surface of the dry ice spray type cleaning apparatus according to the embodiment of the present invention.
3 is a cross-sectional view showing the structure of a dry ice spray type cleaning apparatus according to an embodiment of the present invention
4 is a cross-sectional view showing the configuration inside the distribution block in the dry ice spray type cleaning apparatus according to the embodiment of the present invention
5 is a perspective view showing a configuration of a distribution disk in the dry ice spray type cleaning apparatus according to the embodiment of the present invention.
6 is an explanatory view for explaining the distribution and injection action of the dry ice pellets in the dry ice spray type cleaning apparatus according to the embodiment of the present invention.
7 is a structural explanatory view showing the configuration of a dry ice spray type cleaning apparatus according to another embodiment of the present invention
8 is a structural explanatory view showing the configuration of a dry ice spray type cleaning apparatus according to another embodiment of the present invention
Fig. 9 is a structural explanatory view showing an embodiment in which the configuration of a stirring blade and a hopper of the dry ice spray type cleaning apparatus of Fig. 8 is modified
10 is a perspective view showing a configuration of a dispensing disc according to another embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings.

2 is a perspective view showing a dry ice spray type cleaning apparatus according to an embodiment of the present invention.

The dry ice spray type cleaning apparatus 10 according to the embodiment of the present invention is a device for cooling and separating foreign matters attached to a mold or the like by the dry ice pellets P discharged together with compressed air.

A spray nozzle 20 is connected to a compressed air outlet 43 of the dry ice spray type cleaning apparatus and a spray nozzle 21 is provided at an end of the spray hose 20 to supply dry ice pellets P with compressed air It is spraying.

3 and 4, the dry ice spray type cleaning apparatus according to the embodiment of the present invention is provided with a discharge port 31 at the lower end thereof and accommodates the dry ice pellets P, And a pellet feed port 41 to which the discharge port 31 is coupled is installed at one side so that the dry ice pellets P are fed down from the hopper 30 and supplied to the other side A distribution block 40 installed with a compressed air supply port 42 to which compressed air is supplied and installed at a lower side of the compressed air supply port 42 and provided with a compressed air outlet 43 through which compressed air flows, The dry ice pellets P which are provided in the receiving space 48 inside the distribution block 40 in a horizontal disk shape and supplied from the discharge port 31 are supplied to the compressed air supply port 42 and the compressed air (43) to the position between the outlet And a 45 and a driving device 50 for rotating the distribution disc (45) provided with a rotation shaft 54 coupled to the central shaft (45b) of the vertical of the distribution disc (45).

The hopper 30 has a tubular shape and its lower portion is gradually narrowed, and a discharge port 31 is installed at a lower end thereof. The dry ice pellets P descend and are discharged downward through the discharge port 31 at the lower end in a state in which a large amount of dry ice pellets are accommodated therein.

A vibrator 35 is installed on the outer surface of the hopper 30 so that the dry ice pellets P in the hopper 30 can be smoothly discharged through the discharge port 31. The vibrator 35 is mounted on the hopper 30 The pellets F are moved by the vibration to prevent the tangles from becoming entangled with each other, and the pellets F are moved downward to promote the operation of being discharged through the discharge port 31.

The distribution block 40 is a part for receiving the dry ice pellets P from the discharge port 31 of the hopper 30 and distributing the dry ice pellets P by a predetermined amount.

The distribution block 40 is provided with a pellet feed port 41 on one side thereof so as to open upward so that a discharge port 31 of the hopper 30 is coupled and a predetermined amount of pellet F A compressed air supply port 42 and a compressed air outflow port 43 are provided so as to be sprayed.

The discharge port 31 of the hopper 30 is connected to the pellet feed port 41 and the dry ice pellet P descends from the discharge port 31 to enter the inside of the distribution block 40.

Inside the dispensing block 40, a receiving space 48 is formed in a horizontal disc shape, and a dispensing disc 45 is installed.

At the other side of the distribution block 40, a compressed air supply port 42 is formed in the upper portion of the accommodation space 48 to supply compressed air from the compressed air supply pipe 72 to the accommodation space 48, A compressed air outflow port 43 through which the compressed air flows out from the accommodation space 48 is provided below the sphere 42. A compressed air outflow pipe 82 is connected to the compressed air outflow port 43.

The compressed air outlet 43 is provided directly below the compressed air supply port 42 so that the compressed air that has entered the containing space 48 from the compressed air supply port 42 passes through the through hole 45a of the distribution disk 45, And then enters the compressed air outlet 43 directly.

On the other hand, the dispensing disc 45 is installed in the receiving space 48 of the dispensing block 40.

The dispensing disc 45 serves to move the dry ice pellets P supplied from the discharge port 31 of the hopper 30 by a predetermined amount to a position between the compressed air supply port 42 and the compressed air outlet port 43 do.

To this end, the vertical shaft 45b of the dispensing disc 45 is coupled with the rotating shaft 54 of the driving device 50 to rotationally drive the dispensing disc 45.

5, the distribution disc 45 has a plurality of through holes 45a arranged at predetermined intervals around the center axis 45b thereof so that the discharge port 31 of the hopper 30 is connected The dry ice pellets P are supplied from the pellet supply port 41 and are received by a predetermined amount.

When the through holes 45a are pivoted about the central axis 45b in accordance with the rotation of the distribution disk 45, the dry ice pellets P accommodated in the respective through holes 45a are positioned at the lower side of the pellet feed opening 41 And moves to a position between the compressed air supply port 42 and the compressed air outflow port 43.

As shown in Fig. 5, the distribution disc 45 is provided with a coupling hole 45d at the center thereof, and the upper end of the rotary shaft 54 is engaged and fastened to each other by bolts 45c.

The driving device 50 includes a vertical rotating shaft 54 and a geared motor for rotationally driving the rotating shaft 54 thereof. The geared motor includes a drive motor 51 and a speed reducer 52 that decelerates the number of rotations of the drive motor. The speed reducer 52 receives the rotational force of the horizontal motor rotation axis of the drive motor 51 The rotary shaft 54 is rotated at a reduced speed by the engagement of a worm gear or the like.

Hereinafter, the operation of the dry ice spray type cleaning apparatus according to the embodiment of the present invention will be described.

4, when the dry ice pellets P are poured into the hopper 30, the dry ice pellets P descend through the discharge port 31 and are discharged. At this time, the vibration of the vibrator 35 prevents the dry ice pellets P from clumping together and promotes the descent.

The pellet descending to the pellet feed port 41 of the distribution block 40 through the discharge port 31 is supplied to the through hole 45a of the distribution disk 45 opposed to the pellet feed port 41. [ The through hole 45a of the distribution disk 45 accommodates only the positive pellet F corresponding to the volume of the through hole 45a.

Thereafter, the dry ice pellets P accommodated in the through holes 45a of the distribution disc 45 are pivoted about the central axis 45b while the distribution disc 45 rotates together with the rotation of the rotary shaft 54, (42) and the compressed air outlet (43).

The pellets transferred to the position between the compressed air supply port 42 and the compressed air discharge port 43 are compressed by the compressed air supplied from the compressed air supply port 42 into the through holes 45a from the upper side to the lower side with a strong pressure so as to advance to the compressed air outlet 43 so that the through holes 45a of the distribution disk 45 push the dry ice pellets P accommodated therein, And then flows out to the outlet 43.

The pellets P flowing out together with the compressed air are sprayed onto the object to be cleaned through the spray nozzle 21 while flowing along the spray hose 20. [

The action of the through hole 45a to transfer the pellets P while the distribution disk 45 rotates is continuously performed by continuously supplying the dry ice pellets P descending from the hopper 30, The dry ice pellets P can be continuously sprayed through the through holes 45a of the distribution disk 45 which are continuously moved by the compressed air of the discharge port 42. [

On the other hand, Fig. 7 shows the configuration of another embodiment of the present invention.

7, the dry ice spray type cleaning apparatus according to the present embodiment is provided with a hot air supply path 66 in the distribution block 40 so as to supply hot air to the accommodation space 48 in which the distribution disk 45 is accommodated And the hot air supply path 66 is connected to the blower 62 and the heater 63.

The discharge port 31 of the hopper 30 is provided with an on-off valve 34 and a controller 61 for controlling the blower 62, the heater 63 and the on-off valve 34.

The on-off valve 34 is a valve that is electrically operated by a control signal from the controller 61, and a well-known commercial product can be employed.

In the above-described configuration, the distribution disk 45 and the distribution block 40 are adhered to each other by freezing such as moisture due to the cooling action of the dry ice pellet P, and the operation can be stopped. .

The state in which the distribution disk 45 and the distribution block 40 (the inner surface of the accommodation space) are attached to each other by freezing is a problem that occurs when restarting after a certain period of operation stoppage, Resolve it.

First, the controller 61 closes the on-off valve 34 and operates the blower 62 and the heater 63 for a set time before driving the driving device 50. [

The air supplied from the blower 62 is heated while passing through the heater 63 and the heated air flows into the containing space 48 of the distribution block 40 through the hot air supply path 66 .

The hot air introduced into the receiving space 48 flows through the gap 49 between the inner surface of the receiving space 48 and the surface of the dispensing disc 45 to flow around the dispensing disc 45, Freezing occurring between the distribution disk 45 and the distribution block 40 can be eliminated.

The controller 61 stops the operation of the blower 62 and the heater 63 and operates the driving device 50 to rotate the dispensing disc 45 after supplying the hot air for the set time.

Thereafter, the open / close valve 34 provided in the discharge port 31 of the hopper 30 is opened to allow discharge of the dry ice pellets P, and the dry ice pellets P are transported by a predetermined amount by the distribution disk 45 Can be smoothly generated.

10 shows a structure in which the hot air of the hot air supply path 66 can flow more smoothly around the distribution disc 45. [

10, an annular bore-shaped hot air flow path 67 formed on the upper surface of the distribution disk 45 and formed around the central axis of the distribution disk 45, 45a are connected to each other to provide diffusion of hot air.

Thus, when the hot air supply path 66 blows the hot air to the hot air flow path 67 from above the hot air flow path 67, the hot air flows around the hot air flow path 67, 67 can flow to the through-hole 45a by the hot-air flow path 67 having a bony shape provided in a radial direction.

The hot air introduced into the through hole 45a can be more smoothly diffused around the upper and lower surfaces of the dispensing disc 45 while being guided to the lower surface of the dispensing disc 45 because the through hole 45a serves as a guide path for hot air.

Meanwhile, FIG. 8 shows a configuration of a dry ice spray type cleaning apparatus according to another embodiment of the present invention.

Referring to FIG. 8, the present embodiment includes a structure for preventing the dry ice pellets P accommodated in the hopper 30 from being entangled.

That is, the hopper 30 is provided with a stirring vane 36 which is coupled to the rotating shaft 54 of the driving device 50 and receives a rotating force.

The stirring vane 36 serves to mix and push the dry ice pellets P while pushing the plurality of vane members provided around the rotating shaft by the rotation of the stirring vane 36. The stirring vane 36 is a technique for replacing the vibrator 35 described in the above- It is means.

In the case of the vibrator 35 described above, the dry ice pellets P in the hopper 30 can be prevented from being entangled and the dry ice pellets P can be smoothly lowered. However, due to strong noise and vibration, And the durability of other components due to the transmission of vibration is also affected.

The rotating shaft 54 of the drive unit 50 is installed so as to extend vertically through the distribution block 40 to the inside of the hopper 30 and is supported by a bearing 57 provided on the wall surface of the hopper 30 .

The dry ice pellets P stacked in the hopper 30 with the rotation of the rotating shaft 54 are agitated by the agitating blades 36 so that the dry ice pellets P, Relative motion. This prevents the occurrence of entanglement between the dry ice pellets (P), and smooths down the action of the dry ice pellets (P) toward the discharge port (31).

9 shows a configuration of another embodiment in which a stirring blade 36 is provided.

9, in this embodiment, the first and second stirring vanes 38 and 39 are provided in the hopper 30 at the intermediate portion and the upper end of the rotary shaft 54, respectively.

The drying ice pellets P are separated from each other to prevent the dry ice pellets P from passing through the drying ice pellets P and prevent the pellets F from adhering to each other. The dry ice pellets P descend through the plurality of sieves 33a of the sieve 33.

The rotary shaft 54 extends to the upper side of the sieve 33 and the stirring blade is connected to the upper end of the rotary shaft 54 and is connected to the first stirring blade 54, And a second stirring vane 39 which is coupled with the rotating shaft 54 and rotates together with the rotating shaft 54 at a lower side of the sieve 33.

According to the above-described configuration, in the process of rotating the rotating shaft 54 of the driving device 50 and advancing the dry ice pellets P by a certain amount of the dispensing disk 45 and injecting the same, the rotating shaft 54 Rotates the first stirring blade 38 and the second stirring blade 39 continuously.

The first stirring blade 38 prevents the dry ice pellets P from sticking together and agglomerating while the dry ice pellets P are stirred on the upper side of the sieve 33, ) Of the dry ice pellets (P).

The dry ice pellets P that pass through the sieve 33 and descend toward the discharge port 31 can be lowered in a separated state from each other.

The first agitating blades 38 are preferably spaced apart from the sieve 33 in the range of 1 to 2 cm. The first stirring blade 38 is rotated in the state of being close to the upper side of the sieve 33 so that the dry ice pellets P approaching the sieve 33 can be moved to further accelerate the passage to the sieve 33 have.

The dry ice pellets P having passed through the screen 33 are adhered to each other due to the low temperature when they are kept in the stopped state for a predetermined time and thus the second stirring blades 39 are agitated to form the dry ice pellets P, So that the pellets can be prevented from being entangled and the action of being discharged downward toward the discharge port 31 can be smoothly promoted.

The installation of the agitator blades 36, 37 and 38 prevents the dry ice pellets P from being entangled and induces smooth discharge through the discharge port 31, So that the damage of noise and vibration can be prevented.

In the present embodiment, the hot air supply device described above can be installed together.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, .

10: Dry ice cleaning device 20: Discharge hose
21: injection nozzle 30: hopper
31: outlet 33; Filter
34: opening / closing valve 35: vibrator
36: stirring blade 38: first stirring blade
39: second stirring blade 38:
40: distribution block 41: pellet feed port
42: compressed air supply port 43: compressed air outlet
45: distribution disk 45a: through-hole
45c: bolt 45d: engaging hole
48: accommodation space 49:
50: drive device 51: drive motor
52: Reducer 54: Rotary shaft
61: Controller 62: Blower
63: heater 66: hot air supply path
67: Hot air flow path 68: Hot air diffusion path
72: compressed air supply pipe 82: compressed air discharge pipe
P: dry ice pellet

Claims (5)

A hopper 30 provided with a discharge port 31 at the lower end thereof for receiving the dry ice pellets P and discharging the dry ice pellets P through the discharge port 31,
A pellet supply port 41 to which the discharge port 31 is coupled is installed at one side so that the dry ice pellet is supplied downward from the hopper 30 and a compressed air supply port 42 through which compressed air is supplied is installed A distribution block 40 disposed below the compressed air supply port 42 and provided with a compressed air outlet 43 through which compressed air flows,
The dry ice pellet P supplied from the discharge port 31 is installed in the receiving space 48 inside the distribution block 40 in a horizontal disc shape and is supplied to the compressed air supply port 42, A dispensing disc 45 for moving to a position between the compressed air outlets 43,
And a drive device (50) for rotationally driving the dispensing disc (45) with a rotating shaft (54) coupled to a vertical central axis (45b) of the dispensing disc (45)
The dispensing disc 45 is provided with a plurality of through holes 45a arranged around the central axis 45b and receiving and receiving the dry ice pellets P from the pellet supply port 41, And,
Each of the through holes 45a having the distribution disc 45 rotated about the central axis 45b and supplied with the dry ice pellets P is passed through the compressed air supply port 42 and the compressed air outlet 43 The compressed air in the compressed air supply port 42 passes through the through hole 45a and flows into the compressed air outlet port 43 together with the dry ice pellets P, As shown in FIG.
In the hopper 30, there is provided a stirring blade for preventing entanglement of the received dry ice pellets P,
The stirring vane is coupled to the rotating shaft 54 to receive a rotational force,
The distribution block 40 is provided with a hot air supply path 66 for supplying hot air to the accommodation space 48,
The hot air supply path 66 is connected to the blower 62 and the heater 63 so that the air supplied from the blower 62 is heated by the heater 63 and supplied to the hot air supply path 66 ,
An opening / closing valve (34) is provided in the discharge port (31) of the hopper (30)
A controller 61 for controlling the blower 62, the heater 63, and the on-off valve 34,
The controller 61 closes the on-off valve 34 for a set time before the driving device 50 is driven and operates the blower 62 and the heater 63 to generate hot air in the containing space 48 Lt; / RTI >
On the upper surface of the distribution disk 45
A hot air flow path (67) in the form of an annular bore formed around the center axis of the distribution disk,
A hot air diffusing path 68 is provided in the form of a radial boss to connect the through hole 45a from the hot air flow path 67 to induce diffusion of hot air,
The hot air supply path (66) is located above the hot air flow path (67) and supplies hot air to the hot air flow path (67) The method according to claim 1,
The hopper (30) is horizontally installed with a drying net (33) so that the dry ice pellets (P) pass downward and are separated from each other,
The rotating shaft 54 extends to the inside of the hopper 30 and rotates, extends up to the upper side of the feeder 33,
The stirring wing
A first stirring blade 38 coupled to an upper end of the rotating shaft 54 and rotated together with the rotating shaft 54 at an upper side of the sieve 33,
And a second stirring blade (39) coupled to the rotating shaft (54) at a lower side of the filtering net (33) and rotating together with the rotating shaft (54)
Characterized in that the first stirring vane (38) is installed so as to rotate with an interval of 1 to 2 cm from the sieve (33) delete delete delete

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