JP4637518B2 - Foreign matter intrusion prevention equipment - Google Patents

Description

  The present invention relates to a foreign matter intrusion prevention facility.

  In the related facilities for pharmaceuticals and foods, when bringing in items such as cardboard boxes from an external non-insect control area to the insect control area in the facility, conventionally, it is the same as the outside that the non-insect control is performed. Insects and debris adhering to the outer surface by carrying them into the control room, carrying them in piles, and then paying the outer surfaces of the loaded items one by one with a brush or cloth. (Hereinafter referred to as foreign matter such as insects and dust) was removed, the door that was an insect barrier was opened, and the carry-in was manually carried into the insect control area.

  However, in such conventional means, since some of the carried items are piled up even on rainy days, foreign matters such as insects and garbage are likely to adhere to the outer surface of the carried items, and there are hundreds of them. It takes time and effort to manually carry the carry-in to the insect control area, and the insect barrier is broken by opening the door, which is an insect barrier. There was a problem.

  Therefore, in recent years, a tunnel-like path equipped with an automatic conveyor has been used to prevent the carried items from being carried into the insect control area with foreign matter such as insects and dust attached thereto, and to perform work efficiently. A single air shower or air curtain is installed in the box, and foreign substances such as insects and dust adhered to the carry-in are removed by the air shower while the carry-in is carried in the pass box by the automatic conveyor. Prevent foreign matter such as insects and dust from entering the insect control area, or install an air curtain at the entrance to prevent foreign matters such as insects and dust from entering the insect control area. ing.

In addition, there exists patent document 1 as an apparatus which conveys a conveyed product from a contaminated area to a clean area. In Patent Literature 1, a clean room and a packaging room are partitioned by a wall such as a heat insulating panel, a through-hole is opened in the wall, and a tunnel-like conveyance area is provided to advance food from the clean room to the packaging room. A plurality of open / close doors are installed on the transport surface such as, and a shielding object is interposed between the conveyors so as to improve the sealing performance of the clean room.
JP 2000-109215 A

  However, in the above-mentioned conventional apparatus, in which an air shower is provided in a pass box equipped with an automatic conveyor, foreign matters such as insects and dust attached to the surface of the carry-in can be removed by air shower, I could hardly expect the prevention of flying insects from outside.

  In addition, in the case where an air curtain is provided in a pass box equipped with an automatic conveyor, or an air curtain is provided in the carry-in entrance, the airflow flows only in one direction from the top to the bottom, or Since it flows in both directions from the left and right sides to the center, it is not possible to remove foreign matter such as insects and garbage attached to the carry-in, even though it can prevent the entry of flying insects. In addition, foreign matters such as insects and dust had to be removed using a brush or cloth at the import start portion.

  Furthermore, since the conventional apparatus is only provided with either an air shower or an air curtain, it has not been sufficient for constructing an insect barrier.

  In the present invention, in view of such circumstances, foreign matters such as insects and garbage enter the insect control area when the carry-in is carried from the external non-insect control area to the insect control area in the facility by an automatic conveyor. The object of the present invention is to provide a foreign matter intrusion prevention facility that can reliably prevent the intrusion.

Foreign matter intrusion preventing apparatus of claim 1, wherein the inlet portion to the non-insect controlled area side is formed outlet moth controlled area side, respectively, and a high open air-tightness to the inlet and outlet section door body In a pass box housed in a casing, in which a drive transport device is installed so that a load can be transported from the non-insect control area to the insect control area .
In order to prevent foreign matter such as insects and dust from entering from the non-insect control area by forming an air curtain and to blow away foreign matter such as insects and dust adhering to the carry-in by air of the air curtain In addition, after the foreign matter is captured by the first filter, the air taken in from the first air intake port provided on the side surface of the inlet is blown out from the slit-type first air outlet by the first blower. The front air curtain,
In order to capture foreign matters such as insects and dust that have entered from the previous air curtain part by air shower, the air that flows out from the opening at the bottom of the pass box and is sucked into the second blower for air shower, An air shower part that captures foreign matter by the second filter and then blows out from the air blowing nozzle again to flow into the lower opening to form a circulating airflow ;
In order to prevent foreign matter such as insects and dust trapped in the air shower part from entering the insect control area by blocking with an air curtain , a part of air is caught by the third filter means. However, for the latter stage air curtain, the third air blower blows out from the slit-type second air blower outlet to form a circulating airflow in the casing, and the remaining air is sent to the inlet by the dedicated fourth fan. The air is taken in from the second air intake port provided on the side surface of the part, captured by the fourth filter means, and then blown out from the slit-type second air outlet with the air flow from the third blower. Thus, a rear air curtain portion that maintains a positive pressure while forming an air flow toward the non-insect control area ,
The inlet portion, the front air curtain portion, the air shower portion, the rear air curtain portion, and the outlet portion are provided in this order from the inlet portion to the outlet portion of the casing .

  In the foreign matter intrusion prevention equipment according to the second aspect, the air curtain of the front air curtain section is composed of air flowing from the upper side to the lower side, air flowing from the lower side to the upper side, and air flowing from the left and right sides to the center side.

In the foreign matter intrusion prevention facility according to the third aspect, the air forming the air curtain in the front air curtain portion is configured to be discharged to the non-insect- proof management area .

According to the foreign matter intrusion prevention equipment according to claims 1 to 3 of the present invention, when carrying in an article from an external non-insect control area into the insect control area, foreign matters such as insects and garbage enter the insect control area. It is possible to surely prevent this from happening, and it is possible to achieve an excellent effect that the work for carrying in the load can be performed efficiently and quickly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a longitudinal side view showing an example of an embodiment of the foreign matter intrusion prevention equipment of the present invention, FIG. 2 is a view taken in the direction of arrow II in FIG. 1, FIG. 3 is a view taken in the direction of arrow III in FIG. 4 is a view in the direction of the arrow IV, FIG. 5 is a view in the direction of the arrow V in FIG. 1, FIG. 6 is a vertical side view schematically showing the foreign object intrusion prevention equipment in FIG. It is a schematic diagram which shows the operation | movement procedure which shows each area of FIG.

  In the figure, reference numeral 1 denotes a non-insect control area in the facility which is a carry-in room in which the incoming material M is transferred and temporarily stored, 2 is an insect control area in the facility, 3 is a non-insect control area 1 and an insect control area 2 is a foreign matter intrusion prevention facility installed between the non-insect control area 1 and the insect control area 2 so as to connect the two. The foreign matter intrusion prevention equipment 3 includes a casing 4 and a substantially tunnel-shaped pass box 5 installed in the casing 4 over the entire length in the longitudinal direction, and passes through the pass box 5 from a predetermined position in the non-insect control area 1 to prevent insects. A drive roller conveyor 6 for conveying a load M such as a cardboard box is laid to a predetermined position in the management area 2.

  The parts of the casing 4 and the pass box 5 of the foreign matter intrusion prevention equipment 3 are an entrance part A, a front air curtain part B, an air shower part C, and a rear stage from the upstream side to the downstream side in the traveling direction of the carry-in item M. It is divided into an air curtain part D and an outlet part E.

  The entrance A is a region for blocking the entrance when the apparatus is stopped and preventing foreign matter such as insects and dust from entering the pass box 5, and is provided with a highly airtight shutter 7 that can be opened and closed up and down. It has been.

  The front air curtain part B forms an air curtain that prevents foreign matters such as insects and garbage from entering the non-insect control area 1 and blows away foreign matters such as insects and dust adhering to the carry-in M. A slit-type air outlet 8 is provided around the pass box 5 so that air can be blown toward the center of the pass box 5 at a flow velocity of 30 m / S or more from the top, bottom, left and right of the pass box 5 Is formed.

  The front air curtain section B includes a high performance filter 9 and a blower 10 disposed in the casing 4. Thus, the air 12 sucked by the blower 10 and taken into the casing 4 from the air intake port 11 provided in the inlet portion A on the non-insect control area 1 side is transferred to the casing 4 by the high-performance filter 9. After the foreign matter is captured, it is pressurized by the blower 10 and introduced into the space part 4b formed outside the pass box 5 of the preceding air curtain part B. From the space part 4b, the upper and lower parts and the left and right air outlets 8 are opened. After that, it can be blown into the pass box 5.

  For this reason, an air curtain is formed in the front air curtain portion B in the pass box 5 by the blown air 12, and foreign matters such as insects and dust enter the pass box 5 from the non-insect control area 1. In addition to being prevented, the air 12 forming the air curtain can blow off foreign matters such as insects and dust adhering to the carry-in material M being conveyed in the pass box 5.

  Further, the air 12 blown into the pass box 5 forms a circulating air flow from the pass box 5 to the non-insect control area 1.

  The air shower section C is an area for forming an air shower for capturing foreign matter such as insects and dust that broke through the front air curtain section B. 25 m / A plurality of air blowing nozzles 13 are provided on the upper and left and right sides of the pass box 5 so that air can be blown at a flow rate of S or higher. An insect-proof fluorescent lamp 14 for preventing insects from entering through the air curtain part B is installed.

  The air shower C includes a pre-filter 15, a high-performance filter 16 and a blower 17 disposed in the casing 4. Thus, the air 19 that flows out from the opening 18 at the bottom of the pass box 5 and is sucked by the blower 17 captures foreign matters such as insects and dust by the pre-filter 15 and the high-performance filter 16, and then is blown by the blower 17. Pressurized and introduced into the space portion 4c formed outside the pass box 5 of the air shower portion C, and passes from the space portion 4c to the air shower portion C in the pass box 5 through a plurality of upper and left and right air blowing nozzles 13. It can be blown out.

  For this reason, an air shower is formed in the air shower part C in the pass box 5 by the blown-out air 19, and foreign substances such as insects and dust entering from the preceding air curtain part B are captured by the air shower. Yes.

  Further, the air 19 blown into the pass box 5 again flows out from the opening 18 at the lower part of the pass box 5 and flows toward the prefilter 15 to form a circulating air flow.

  The latter stage air curtain part D is an area for forming an air curtain for blocking foreign matters such as insects and dusts that are going to enter the insect control area 2 from the air shower part C. From the upper part of the pass box 5, the pass box 5 A slit-type air outlet 20 is formed in the upper part of the pass box 5 so that air can be blown into the pass box 5 at a flow velocity of 35 m / S or more. A slit-type air inlet 21 and an opening 22 for discharging the air blown into the inside of the pass box 5 are provided.

  The rear air curtain part D includes a pre-filter 23, a high-performance filter 24 and a blower 25 disposed in the casing 4, and is sucked by the blower 25 to be an air suction port 21 and an opening part 22 below the pass box 5. The air 26 that has flowed out of the air is captured by the pre-filter 23 and the high-performance filter 24, and then is pressurized by the blower 25 and formed outside the pass box 5 of the rear air curtain portion D. It is introduced into the portion 4d, and can be blown out from the space portion 4d to the rear air curtain portion D in the pass box 5 through the upper air blowing port 20.

  For this reason, a push-pull type air curtain is formed in the rear air curtain portion D in the pass box 5 by the blown air 26, and foreign matters such as insects and dust from the air shower portion C are separated from the rear air curtain portion D. Can be prevented from entering the insect control area 2.

  Further, the rear air curtain portion D includes a blower 27 in the casing 4, and is sucked by the blower 27 and taken into the casing 4 from an air intake port 28 provided in the inlet portion A on the non-insect control area 1 side. The air 29 is captured by foreign matter such as insects and dust by the high-performance filter 30, and is pressurized by the blower 27 and introduced into the space portion 4d formed outside the pass box 5 of the rear air curtain portion D. It joins the air 26 and is blown into the pass box 5 together with the air 26 from the air blowing port 20, and flows out through the air suction port 21 and the opening 22 at the lower part of the pass box 5 to form a circulating air flow. Yes.

  Further, a part of the air flowing out from the opening 22 can pass through the casing 4 to form a circulating air flow toward the non-insect control area 1 side.

  As described above, the air 29 is supplied into the pass box 5 by the blower 27 in the rear air curtain part D because the air 26 passes from the pass box 5 to the blower 25 through the lower air suction port 21 and the opening 22. When sucked, the inside of the pass box 5 is set to a positive pressure to prevent the inside of the pass box 5 from becoming a negative pressure so that the insect control area 2 does not become a negative pressure. This is to prevent foreign matters such as insects and dust from entering the insect control area 2 due to the differential pressure between the inside 5 and the insect control area 2.

  The exit E is an area for blocking the carry-out exit when the apparatus is stopped and preventing foreign matter such as insects and dust from entering the insect control area 2 from the inside of the pass box 5. A high shutter 31 is provided. The high performance filters 9, 16, 24, 30 are HEPA filters, for example.

Next, the operation of the illustrated example will be described.
When carrying a load M such as a cardboard box from the non-insect control area 1 to the insect control area 2, each blower 10, 17, 25, 27 is driven and the drive roller conveyor 6 is driven to prevent foreign matter from entering. 3, the shutter 7 at the entrance portion A and the shutter 31 at the exit portion E are opened.

  Thus, when the worker mounts the carry-in object M on the drive roller conveyor 6 on the non-insect-proof control area 1 side, the carry-in object M is conveyed by the drive roller conveyor 6 while the foreign matter intrusion prevention equipment 3 is installed from the entrance A. It is fed into the pass box 5 and reaches the preceding air curtain section B.

  In the front air curtain section B, the air 12 taken into the casing 4 from the non-insect control area 1 side through the air intake 11 is captured by foreign matter such as insects and dust by the high performance filter 9. Each air blower 10 sucks, pressurizes, feeds to the space 4 b in the casing 4, and blows out from the air outlet 8 toward the lower and upper sides in the pass box 5 and toward the left and right central sides.

  For this reason, an air curtain is formed in the front air curtain portion B of the pass box 5 by the blown air 12 so that foreign matter such as insects and dust enter the pass box 5 from the non-insect control area 1 side. In addition to being prevented, the air 12 is blown onto the carry-in object M being conveyed by the drive roller conveyor 6, and foreign matters such as insects and dust adhering to the carry-in object M are blown off. Foreign matter such as insects and dust blown off is accompanied by the air 12 and discharged to the non-insect control area 1 side.

  The carry-in matter M, in which foreign matters such as insects and dust are captured by the front air curtain part B, is conveyed through the pass box 5 and reaches the air shower part C. Thus, in the air shower section C, the air 19 flowing out from the opening 18 at the lower part of the pass box 5 is captured as foreign air such as insects and dust by the pre-filter 15 and the high-performance filter 16 as a circulating air flow, and the blower 17 The air shower is formed by the air 19 blown into the pass box 5 from the upper and left and right air blowing nozzles 13 and is supplied to the space portion 4c in the casing 4 and is pre-staged by the air shower. Foreign matter such as insects and dust entering from the air curtain part B is captured. Also, insects are prevented from entering the air shower C by the insect-proof fluorescent lamp 14.

  The carry-in object M that has passed through the air shower C is conveyed and reaches the subsequent air curtain part D. Thus, in the rear air curtain portion D, the air 26 flowing out from the opening 22 at the lower portion of the pass box 5 is trapped as foreign air such as insects and dust by the pre-filter 23 and the high-performance filter 24 as a circulating air flow, and the blower Push-pull type air in the pass box 5 of the rear air curtain part D by the air 26 that is sucked and pressurized by the air 25 and fed to the space 4d in the casing 4 and blown out from the upper air blowing port 20 A curtain is formed. Accordingly, in the rear air curtain portion D, foreign matters such as insects and dust are blocked by the air curtain.

  At the same time, the air 29 taken in from the air intake 28 on the non-insect control area 1 side is captured by a high-performance filter 30 such as insects and dust, and is sucked and pressurized by the blower 27 to be contained in the casing 4. The air is supplied to the space portion 4d, is accompanied by the air 26 that is a circulating air flow, is blown into the pass box 5 from the air blowing port 20, and is circulated from the air suction port 21 to the prefilter 23 side through the opening portion 22. At this time, a part of the air flowing out from the opening 22 is sent as a circulating airflow through the casing 4 to the non-insect control area 1 side.

  For this reason, as a result of the air suction port 21 being maintained at a positive pressure, the insect control area 2 does not become negative pressure, and therefore air does not flow from the pass box 5 side to the insect control area 2 side, Foreign matter such as dust is securely blocked by the air curtain. As a result, invasion of foreign matters such as insects and dust from the outside to the insect control area 2 is reliably prevented.

  According to the illustrated example, when carrying the carry-in M from the external non-insect control area 1 into the insect control area 2 in the facility, it is ensured that foreign matters such as insects and garbage enter the insect control area 2. In addition, it is possible to prevent the load M from being carried in efficiently and quickly.

  The foreign matter intrusion prevention equipment of the present invention is not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the scope of the present invention.

It is a vertical side view which shows an example of embodiment of the foreign material penetration | invasion prevention equipment of this invention. It is an II direction arrow line view of FIG. It is a III direction arrow line view of FIG. It is an IV direction arrow line view of FIG. It is a V direction arrow directional view of FIG. It is a vertical side view which shows typically the foreign material penetration | invasion prevention equipment of FIG. It is a schematic diagram of the process which shows each area of FIG. 6 in a cross section when carrying in a load from a non-insect control area to an insect control area.

Explanation of symbols

1 Non-insect control area 2 Insect control area 3 Foreign matter intrusion prevention equipment
4 casing 5 pass box 6 drive roller conveyor (drive conveyor)
7 Shutter (door)
8- slit air outlet (slit-type first air outlet)
9 High-performance filter (first filter)
10 blower (first blower)
11 Air intake (first air intake)
12 Air
13 air blowoff nozzle 15 prefilter (second filter)
16 High performance filter ( second filter )
17 blower (second blower)
18 opening 23 pre-filter ( third filter )
24 High performance filter ( third filter )
25 blower (third blower)
27 blower (fourth blower)
28 Air intake (second air intake)
26 Air 29 Air
30 high-performance filter (fourth filter)
31 Shutter (door)
A Inlet part B Front air curtain part C Air shower part D Rear air curtain part E Outlet part M Carry-in

Claims (3)

Inlet to the non-insect controlled area side is formed outlet moth controlled area side, respectively, and the inlet and door body highly possible airtight closing the outlet portion is disposed, from the non-insect management area In the pass box housed in the casing, the drive conveyance device is installed inside so as to be able to convey the carry-in through the insect control area ,
In order to prevent foreign matter such as insects and dust from entering from the non-insect control area by forming an air curtain and to blow away foreign matter such as insects and dust adhering to the carry-in by air of the air curtain In addition, after the foreign matter is captured by the first filter, the air taken in from the first air intake port provided on the side surface of the inlet is blown out from the slit-type first air outlet by the first blower. The front air curtain,
In order to capture foreign matters such as insects and dust that have entered from the previous air curtain part by air shower, the air that flows out from the opening at the bottom of the pass box and is sucked into the second blower for air shower, An air shower unit that captures foreign matter by the second filter and then blows out from the air blowing nozzle and flows again to the lower opening to form a circulating airflow ;
In order to prevent foreign matter such as insects and dust trapped in the air shower part from entering the insect control area by blocking with an air curtain , a part of air is caught by the third filter means. However, for the latter stage air curtain, the third air blower blows out from the slit-type second air blower outlet to form a circulating airflow in the casing, and the remaining air is sent to the inlet by the dedicated fourth fan. The air is taken in from the second air intake port provided on the side surface of the part, captured by the fourth filter means, and then blown out from the slit-type second air outlet with the air flow from the third blower. Thus, a rear air curtain portion that maintains a positive pressure while forming an air flow toward the non-insect control area ,
A foreign matter intrusion prevention facility comprising an inlet portion, a front air curtain portion, an air shower portion, a rear air curtain portion, and an outlet portion in this order from the inlet portion to the outlet portion of the casing .   The foreign matter intrusion prevention equipment according to claim 1, wherein the air curtain of the front air curtain section is constituted by air flowing from above to below, air flowing from below to above, and air flowing from both right and left sides to the center. The foreign matter intrusion prevention equipment according to claim 1 or 2, wherein the air forming the air curtain in the front air curtain section is configured to be discharged to a non-insect control area .

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