JP2006325417A - Method for killing insect by low temperature and facility for killing insect by low temperature - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and device for killing insects without performing a low temperature treatment for killing insects excessively, but surely performing the low temperature treatment of the whole of materials to be treated, and further preventing the quality deterioration of the materials to be treated caused by dew formation, etc., at the time for rewarming. <P>SOLUTION: This facility for killing insects by the low temperature treatment has a low temperature storage warehouse 2 for performing the low temperature treatment for killing the insects of the materials to be treated 1, a normal temperature chamber 3 for rewarming the treated materials 1, and a conveying chamber 4 for conveying the materials to be treated 1 is provided by in treating the materials 1 to be treated with the low temperature for killing the insects, inserting a temperature sensor into the inside of the materials to be treated 1 through a housing material 1a and conveying to the inside of the low temperature storage warehouse 2 by conveyers 22, 23, 26. The detected signal of the inner temperature of the materials to be treated 1 by the temperature sensor is transmitted through wireless to a controlling device (a watching device). The materials to be treated 1 after the low temperature treatment for killing the insects is conveyed out to the normal temperature chamber 3 from the low temperature storage warehouse 2 through conveyers 26, 23, 24, 36 for rewarming. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a low-temperature insecticidal method and a low-temperature insecticidal facility. In addition, the insecticidal use in the present invention includes not only the insecticidal treatment of adults, larvae, etc. but also the loss of egg hatching ability.

It is well known that insects adhering to food and agricultural products are stored in a low-temperature storage and subjected to low-temperature insecticidal treatment, and the following Non-Patent Document 1 shows a temperature suitable for insecticidal use according to each insect. Patent Document 1 below describes that the temperature and time are periodically changed in a low temperature range of a low temperature storage.
Japanese Patent No. 3560242 Collection Forum, 8 (2), 1992, pp41-67

  Agricultural crops and herbal medicines are stored in a storage body such as a cloth bag, paper bag, or cardboard, and are transported or traded. Therefore, when carrying out the low temperature insecticidal process of these, it is necessary to expose the whole including the deep part of to-be-processed objects, such as agricultural products accommodated in the storage body, to fully low temperature.

  Conventionally, from the point where the temperature of the deep part of the object to be processed in the storage can not be detected, it has to be kept at a low temperature for a long time more than necessary to surely kill the whole object, The low-temperature insecticidal treatment efficiency was reduced.

  In addition, when the object to be treated that has been subjected to the low temperature insecticidal treatment is reheated as it is in a normal environment at room temperature, dew condensation occurs, which may cause the quality of the object to be deteriorated.

  The present invention provides a low-temperature insecticidal method and a low-temperature insecticidal equipment capable of reliably performing a low-temperature insecticidal treatment on an entire object without excessively low-temperature insecticidal treatment and preventing quality deterioration due to condensation. For the purpose.

  The low-temperature insecticidal method according to claim 1 is a low-temperature insecticidal method for performing an insecticidal treatment of an object to be processed by cooling the object to be processed in a low-temperature storage, wherein the object to be processed is stored in the container. A temperature sensor is disposed in the object to be processed, the temperature sensor detects the temperature inside the object to be processed, and a cooling load higher than a predetermined cooling load is given to the object to be processed. is there.

  A low-temperature insecticidal method according to a second aspect is characterized in that, in the first aspect, the temperature detected by the temperature sensor is transmitted to the monitoring means via radio.

  The low temperature insecticidal method according to claim 3 is the method according to claim 1 or 2, wherein the storage body of the processed material that has been subjected to the insecticidal treatment is transferred from the low temperature storage to a room temperature in a dry atmosphere, and the temperature of the processed material is restored to normal temperature. Then, it is taken out from the chamber.

  According to a fourth aspect of the present invention, there is provided a low-temperature insecticidal method according to any one of the first to third aspects, wherein a conveyor that conveys the pallet on which the storage body is placed is installed in the low-temperature storage. Then, the present position of the storage body is detected.

  The low-temperature insecticidal equipment according to claim 5 includes a low-temperature storage, a conveyor installed in the low-temperature storage for carrying a pallet on which a storage body for the low-temperature insecticidal treatment is placed, And a receiver for receiving a radio signal from the temperature sensor inserted into the.

  The low-temperature insecticidal equipment according to claim 6 is the low-temperature insecticidal equipment according to claim 5, which is installed adjacent to the low-temperature storage to cool the object to be treated, and to prevent condensation of the object to be treated. A dehumidifying means for dehumidifying the indoor atmosphere is provided.

  A temperature sensor is placed deep in the object to be processed such as agricultural products and herbal medicines stored in the storage body such as a bag or box, and the temperature of the deep part of the object to be processed is detected. Sufficient cooling load (temperature and time). Therefore, it is reliably prevented that the object to be processed is cooled excessively for a long time, or conversely, the deep part is not sufficiently cooled and the insecticidal treatment becomes incomplete.

  By transmitting the temperature detected by the temperature sensor wirelessly, there is no entanglement of the lead harness even when a large number of workpiece storage bodies are stored in the low temperature storage. Further, the object storage body can be smoothly put in and out of the low temperature storage.

  By installing a conveyor in the low-temperature storage, placing the storage body on a pallet and transporting it by the conveyor, the storage body can be easily put in and out. In this case, the transfer distance of the conveyor can be detected, and the current position of the storage body can be detected based on this. Therefore, even when many storage bodies are stored in the low temperature storage, the specific storage body can be quickly taken out from the low temperature storage.

  If an object to be processed that has been cooled and killed in a low-temperature storage is taken out to the atmosphere as it is, it becomes wet due to condensation. Therefore, it is preferable that the temperature is once transferred from the low-temperature storage to a room with a dry atmosphere, and is then reheated to room temperature.

  In the present invention, examples of the object to be processed include herbal medicines, spices, shells, other agricultural products and foods, but are not limited thereto.

  The cooling load of the workpiece varies depending on the type of the workpiece. The time required to reach the target low temperature up to the deep part of the object to be processed also varies depending on the type of object to be processed, the bulk (quantity), the storage density, and the type of the container. In the present invention, since the temperature of the deep part of the object to be processed is detected by the temperature sensor, the necessary cooling load can be surely applied to the deep part of the object to be processed even if these conditions are different.

  Examples of the storage body include cloth bags such as hemp, paper bags, synthetic fiber bags, cases in which synthetic fibers are shaped into a box, cardboard, wooden boxes, and the like, but are not limited thereto.

  Although the quantity of the to-be-processed object in a storage body is not specifically limited, For example, it shall be about several kg-several hundred kg. When several tens to hundreds of kg of herbal medicine such as Taisou and mint are stored in a linen bag, it takes several hours to several days until the depth reaches −20 ° C. even if stored in a low temperature storage at −40 ° C.

  The pallets conveyed by the conveyor may be stacked in a single layer or in multiple layers. In the case of stacking in multiple stages, support columns may be erected from the four corners of the pallet, and the upper pallet may be placed on the support columns.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a plan view of the low temperature insecticidal equipment according to the embodiment, FIG. 2 is a cross-sectional (elevated) view along the line II-II in FIG. 1, and FIG. FIG.

  The low-temperature insecticidal equipment includes a low-temperature storage 2 for low-temperature insecticidal treatment of an object to be processed 1 such as food and agricultural products, a room temperature room 3 for reheating the low-temperature insecticidal object 1, There is a transfer chamber 4 for carrying in the untreated object 1 into the low temperature storage 2 and for carrying out the low temperature processed object 1 from the low temperature storage 2 to the room 3 at room temperature. . These low-temperature storages 2, the room temperature room 3, and the transfer room 4 are installed adjacent to each other.

  The wall, floor, and ceiling surrounding the low-temperature storage 2 are all highly heat insulating. The walls, floors, and ceilings of the room temperature room 3 and the transfer room 4 other than this may or may not be highly heat insulating.

  In this embodiment, the temperature in the low-temperature storage 2 controlled by a control device (monitoring device) (not shown) is maintained at −15 to −50 ° C. (preferably about −40 ± 3 ° C.). Further, the room temperature room 3 is kept in a dry atmosphere having a dew point temperature of −15 ° C. or lower (preferably a dew point temperature of −20 ° C. or lower) by a dehumidifying device (not shown). Although there is no restriction | limiting in particular about the temperature in the conveyance chamber 4, It is preferable that it is about -5-5 degreeC.

  A wall 5 between the transfer chamber 4 and the low-temperature storage 2, a wall 6 between the transfer chamber 4 and the room temperature room 3, and a wall 7 between the transfer chamber 4 and the outside of the facility are respectively treated objects. One transfer gate 8, 9, 10 is provided. As shown in FIG. 1, the walls 5, 6, and 7 are walls that surround three sides of the transfer chamber 4, and the walls 5 and 7 are in a positional relationship that faces each other. The gate 8 of the wall 5 and the gate 10 of the wall 7 are also arranged in a positional relationship facing each other.

  Each gate 8, 9, 10 is provided with doors 8a, 9a, 10a. Each of these doors 8a, 9a, and 10a is automatically opened and closed based on a signal from the control device.

  In this embodiment, the wall 7 is provided with an emergency door 11 for a person to enter the transfer chamber 4 from the outside of the facility at the time of emergency or inspection. The wall 5 is provided with an emergency door 12 for a person to enter the low temperature storage 2 from the transfer chamber 4. The gates 10 and 8 are respectively disposed on one half side (wall 6 side) of the walls 7 and 5, and the emergency doors 11 and 12 are provided on the other half side of the walls 7 and 5, respectively. Each emergency door 11, 12 can be manually opened and closed.

  Further, in this embodiment, inspection windows 15 and 16 are provided on a wall 13 between the low temperature storage 2 and the room temperature room 3 and a wall 14 facing the wall 13 of the low temperature storage 2, respectively. These inspection windows 15 and 16 can also be manually opened and closed.

  In addition, at least the door 8a of the gate 8, the emergency door 12, and the inspection windows 15 and 16 are highly heat-insulating, and have a structure that blocks leakage of cold air from the low-temperature storage 2 when closed. .

  A wall 17 facing the outside of the room 3 at room temperature (in this embodiment, a wall connected to the wall 7 of the transfer chamber 4) 17 is used for carrying out the object 1 to be processed after rewarming out of the chamber 3. A gate 18 is provided. Reference numeral 18 a indicates a door of the gate 18.

  In this embodiment, an input chain conveyor 22 is provided outside the gate 10 (door 10a) to input the workpiece 1 before the low temperature insecticidal treatment into the transfer chamber 4 through the gate 10. ing.

  In the transfer chamber 4, the workpiece 1 before the low-temperature insecticidal treatment is received from the input chain conveyor 22 and is input into the low-temperature storage 2 (at the time of the input operation) or sent out from the low-temperature storage 2. In addition, a transfer chain conveyor 23 is provided for transferring the low-temperature insecticidal processed object 1 to the front of the gate 9 (when carrying out). The transfer chain conveyor 23 is disposed along the wall 6, and both end sides face the gate 10 and the gate 8, respectively.

  In the middle of this conveyor chain type conveyor 23, the low-temperature insecticidal processed article 1 that has been sent to the front of the gate 9 during the delivery operation is sent out from the conveyor 23 to the room temperature room 3 through the gate 9. A diverter unit conveyor 24 is provided. Further, between the diverter unit conveyor 24 and the gate 9, a cross drive roller conveyor 25 is provided for transferring the workpiece 1 to the discharge roller conveyor 36 in the room 3 at room temperature.

  In the low temperature storage 2, a pull-in chain conveyor 26 for receiving the unprocessed material 1 before the low temperature insecticidal treatment from the conveying chain conveyor 23 during the charging operation and drawing it into the low temperature storage 2, and the processed material 1 (upstream side) and second (downstream side) stock chain conveyors 27 and 28 for stocking 1 in the low temperature storage 2, and the workpiece 1 from the second stock chain conveyor 28. A pull-out chain conveyor 29 for pulling out the paper is installed.

  The pull-in chain conveyor 26 and the first stock chain conveyor 27 are arranged in a straight line along the wall 13, and the second stock chain conveyor 28, the drawer chain conveyor 29, Are arranged in a straight line along the opposite wall 14 in parallel with them.

    Specifically, the pull-in chain conveyor 26 is arranged so that one end side thereof faces the gate 8 (door 8a), and the first stock chain conveyor 27 has an upstream side of the pull-in chain conveyor 26. It arrange | positions so that it may face | abut on the other end side. The downstream side of the first stock chain conveyor 27 extends to the vicinity of the wall (reference numeral omitted) opposite to the gate 8 (wall 5).

  The second stock chain conveyor 28 is arranged in parallel next to the first stock chain conveyor 27 in a direction opposite to the first stock chain conveyor 27 from the upstream side to the downstream side. In this embodiment, these first and second stock chain conveyors 27 and 28 have the same length. The pull-out chain conveyor 29 is arranged next to the pull-in conveyor 26 so that one end thereof is abutted with the downstream side of the second stock chain conveyor 27.

  A diverter unit conveyor 30 for moving the workpiece 1 on the conveyor 27 to the second stock chain conveyor 28 side is provided on the downstream side of the first stock chain conveyor 27. A diverter unit conveyor 31 for receiving the workpiece 1 and placing it on the conveyor 28 is provided upstream of the second stock chain conveyor 28. Between these diverter unit conveyors 30, 31, a cross-drive roller conveyor 32 for transferring the workpiece 1 from the conveyor 30 to the conveyor 31 is installed.

  In addition, a diverter unit conveyor 33 for moving the workpiece 1 drawn out from the second stock chain conveyor 28 toward the pull-in chain conveyor 26 is provided in the middle of the drawer chain conveyor 29. In the middle of the pull-in chain conveyor 26, a diverter unit conveyor 34 for receiving the workpiece 1 and placing it on the conveyor 26 is provided. Between these diverter unit conveyors 33, 34, a cross drive roller conveyor 35 for transferring the workpiece 1 from the conveyor 33 to the conveyor 34 is installed.

  The pull-in chain conveyor 26 conveys the workpiece 1 that has moved from the pull-out chain conveyor 29 via the gate 8 through the diverter unit conveyors 33 and 34 and the cross drive roller conveyor 35 during the unloading operation. Drain into chamber 4. The workpiece 1 is transferred to the transfer chain conveyor 23 in the transfer chamber 4.

  A discharge roller conveyor 36 for receiving the low-temperature insecticidal processed object 1 from the diverter unit conveyor 24 through the gate 9 and discharging it into the room 3 at room temperature is installed in the room 3 at room temperature.

  Each of the conveyors 22 to 35 is provided with a guide rail 37 (FIG. 3) for guiding the movement of the workpiece 1.

  These conveyors 22 to 36 are controlled by a line control panel 38 (FIG. 3). The code | symbol 39 of FIG. 3 has shown the operation panel for carrying out the carry-out operation | movement of these conveyors 23-36 from the room | chamber 3 of normal temperature.

  As shown in FIG. 2, the workpiece 1 is placed on the pallet 40 and is conveyed on the conveyors 22 to 36 while being stored in the storage body 1 a. In this embodiment, two kinds of large and small pallets are used according to the size of the storage body 1a. As shown in FIG. 3, in this embodiment, each of the chain type conveyors 22, 23, 26 to 29 is provided with a chain line for a small pallet and a chain line for a large pallet (both are omitted from the reference numerals). Yes.

  The pallets 40 are stacked and transported as necessary as shown in FIG. In this case, columns are erected from the four corners of the lower pallet 40, and the upper pallet 40 is placed on the columns. However, the laminated structure of the pallet 40 is not limited to this.

  The control device for this low-temperature insecticidal equipment detects the transfer distance of each pallet 40 by a series of conveyors 26 to 35 and detects the current position of each pallet 40 based on this. In this embodiment, the transfer distance of each pallet 40 is calculated based on the number of frames of the chain provided for the transfer of each pallet 40, the number of rotations of each rotary shaft, and the like. However, the detection method of the current position of each pallet 40 is not limited to this, and various methods can be used.

  The control device also includes a receiver (not shown) that receives a radio signal from a temperature sensor (not shown) described later. The radio signal from the temperature sensor includes an identification signal for each temperature sensor and a temperature detection signal. That is, this control device monitors the internal temperature of each object 1 detected by the temperature sensor individually (for each container 1a) via wireless.

  A procedure for the low-temperature insecticidal treatment of the workpiece 1 by the low-temperature insecticidal equipment having such a configuration will be described below.

  Examples of the material 1 to be treated with the low temperature insecticidal equipment include herbal medicines, spices, shells, and other agricultural products and foods, but are not limited thereto.

  Such an object to be treated 1 is usually stored and distributed in a storage body 1a such as a cloth bag such as hemp, a paper bag, a synthetic fiber bag, a case in which synthetic fiber is shaped like a box, a cardboard box, a wooden box, or the like. ing. The storage body 1a is not limited to this. Moreover, the to-be-processed object 1 does not need to be accommodated in the storage body.

  Although the quantity of the to-be-processed object 1 in the storage body 1a is not specifically limited, For example, it shall be about several kg-several hundred kg. By the way, when the container 1a containing herbal medicines such as peanuts and mint in a linen bag is stored in the low temperature storage 2 at -40 ° C, several hours to several times until the depth reaches -20 ° C. It takes about a day.

  In carrying out the low temperature insecticidal treatment of the workpiece 1, first, a temperature sensor is inserted through the housing 1 a to the inside (deep part) of the workpiece 1. This temperature sensor transmits the detected temperature to the receiver of the control device via radio. Next, the container 1 a containing the object to be processed 1 is placed on the pallet 40 and installed on the input chain conveyor 22. At this time, as described above, the pallets 40 may be stacked in multiple stages by standing upright from four corners and placing another pallet 40 on the pallets.

  Next, the line control board 38 is operated, and the pallet 40 is conveyed into the low temperature storage 2 by the conveyors 22, 23, and 26. Thereafter, the pallet 40 is transferred from the conveyor 26 to the first stock conveyor 27 and subjected to a low-temperature insecticidal treatment.

  In this low-temperature insecticidal facility, a plurality of pallets 40 (a plurality of objects to be processed 1) are arranged on the stock conveyors 27 and 28 and simultaneously subjected to a low-temperature insecticidal treatment. That is, the pallet 40 (processed object 1) is successively carried into the low temperature storage 2 via the conveyors 22, 23, and 26. Along with this, the pallet 40 carried in first is transferred to the downstream side of the stock conveyor 27. When the pallet 40 reaches the downstream end of the stock conveyor 27, the second stock conveyor 28 is transferred from the diverter unit conveyor 30 to the diverter unit conveyor 31 via the cross drive roller conveyor 32. It is transferred to.

  When the pallet 40 further reaches the downstream end of the stock conveyor 28, the pallet 40 is transferred to the drawer conveyor 29, and then transferred from the diverter unit conveyor 33 to the diverter unit conveyor 34 via the cross drive roller conveyor 35.

  In this embodiment, each pallet 40 is accompanied by the conveyors 26, 27, 30, 32, 31, 28, 29, 33, 35, 34, as the other pallets 40 are carried in and out until the low temperature insecticidal treatment is completed. 26...

  When the low temperature insecticidal treatment of the workpiece 1 on the pallet 40 is completed (when the deep temperature is lower than the predetermined temperature and stored in the low temperature storage 2 for the predetermined time or longer), the conveyors 23 to 36 are moved. Unloading operation. In this case, the pallet 40 is transferred from the current position onto the pull-in conveyor 26 and is carried out to the transfer chamber 4 by the pull-in conveyor 26. Then, the pallet 40 is received by the transfer conveyor 23 and transferred to the front of the gate 9. Next, the pallet 40 is transferred from the diverter unit conveyor 24 to the discharge roller conveyor 36 via the cross drive roller conveyor 25 and discharged to the room 3 at room temperature.

  Thereafter, the object to be processed 1 is reheated (thawed) in the room 3 at room temperature in the dry atmosphere.

  If the low-temperature insecticidal treatment of the workpiece 1 is incomplete (for example, when the deep temperature is higher than the planned temperature), it is transferred again from the input chain conveyor 22 into the low-temperature storage 2.

  Note that the current position of each pallet 40 and the internal temperature of the workpiece 1 on each pallet 40 are always individually monitored by the control device as described above.

  The cooling load of the workpiece 1 varies depending on the type of the workpiece 1, and the time required to reach the target low temperature up to the deep portion of the workpiece 1 is also determined by the type, bulk (quantity) of the workpiece 1, It differs depending on the storage density and the type of the storage body 1a. In this low-temperature insecticidal facility, the temperature of the deep part of the workpiece 1 is detected by the temperature sensor. Therefore, even if these conditions are different, the cooling to the deep part of the workpiece 1 is surely necessary and sufficient. Load (temperature and time) can be given.

  Therefore, it is reliably prevented that the workpiece 1 is cooled excessively for a long time, or conversely, the deep part is not sufficiently cooled and the insecticidal treatment becomes incomplete.

  In this embodiment, the temperature detected by each temperature sensor is wirelessly transmitted to the receiver of the control device. Therefore, even when a large number of objects to be processed 1 (container 1a) are stored in the low temperature storage 2, the lead harness There is no entanglement. Moreover, the to-be-processed object 1 can be smoothly taken in / out of the low temperature storage 2.

  In this embodiment, the conveyors 22 to 36 are installed in the chambers 2 to 4 (outside), and the storage body 1 a is placed on the pallet 40 and conveyed by the conveyors 22 to 36. For this reason, the storage body 1a can be easily taken in and out.

  Moreover, in this embodiment, since the transfer distance of the pallet 40 by each conveyor 26-34 in the low temperature store | warehouse | chamber 2 is detected and the present position of each pallet 40 is detected separately based on this, many pallets Even when 40 (object 1) is stored in the low temperature storage 2, the specific pallet 40 can be quickly taken out from the low temperature storage 2.

  In this embodiment, the object to be processed 1 carried out from the low temperature storage 2 is once moved to a room temperature 3 in a dry atmosphere and reheated to room temperature, so that it is prevented that condensation occurs in the storage body 1a. The

  The above embodiment is an example of the present invention, and the present invention is not limited to the illustrated configuration.

  For example, instead of transporting the workpiece using a conveyor, the workpiece may be transported manually.

It is a top view of the low-temperature insecticidal equipment which concerns on embodiment. It is a cross section (elevation) figure which follows the II-II line of FIG. It is a top view of the low temperature storage of this low temperature insecticidal equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 To-be-processed object 1a Storage body 2 Low temperature storage 3 Room temperature room | chamber 4 Transfer room 8-10 Gate 22-36 Conveyor 40 Pallet

Claims (6)

In the low-temperature insecticidal method of performing the insecticidal treatment of the object to be processed by cooling the object to be processed in the low-temperature storage, the object to be processed is stored in the storage body,
A temperature sensor is disposed in the object to be processed through the storage body, the temperature of the object to be processed is detected by the temperature sensor, and a cooling load equal to or higher than a predetermined cooling load is applied to the object to be processed. To cool insecticide.   2. The low-temperature insecticidal method according to claim 1, wherein the temperature detected by the temperature sensor is transmitted to the monitoring means via radio.   In Claim 1 or 2, the container of the processed material treated with insecticide is transferred from the low-temperature storage to a room temperature of a dry atmosphere, and after the temperature of the material to be processed is returned to room temperature, it is taken out from the room. A low-temperature insecticidal method characterized.   4. The conveyor according to claim 1, wherein a conveyor for transporting the pallet on which the storage body is placed is installed in the low-temperature storage, and the current position of the storage body is detected based on a transfer distance of the conveyor. A low-temperature insecticidal method characterized by that. A cold storage,
A conveyor installed in the low-temperature storage for transporting a pallet on which a container for processing objects to be processed at a low temperature is treated;
A low-temperature insecticidal facility comprising a receiver for receiving a radio signal from a temperature sensor inserted into the object to be processed. In Claim 5, the room | chamber temperature room | room for recovering the to-be-processed object installed adjacent to this low-temperature storage,
A low-temperature insecticidal equipment comprising dehumidifying means for dehumidifying the room atmosphere at room temperature.

Images