JPH05199827A - Indoor insect pests killer - Google Patents

Abstract

PURPOSE:To provide an indoor insect pests killer which can ensure the control of Acarina animals living inside the bed mats, Tatami mats, carpets or the like in a short time. CONSTITUTION:An automobile is provided with a treating vessel 1 equipped with an openable cover 1a, a treating gas feeder feeding a treating gas containing the active ingredient having acaricidal effect into the treating vessel, a valve 20 connecting the vessel to the outside air and a vacuum pump 30 for vacuuming the vessel. The shaft for driving the vacuum pump is connected to the sub-power shaft of the transmission of the car.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insecticidal treatment apparatus suitable for insecticidal treatment of objects to be treated such as futons, tatami mats, carpets, etc., especially for treating mites.

[0002]

2. Description of the Related Art Dust mites inhabit futons, tatami mats, carpets, etc. It is known that these mites cause many allergic diseases. Therefore, it is necessary to exterminate mites that live in carpets and tatami mats, but since it is troublesome to transport objects such as bedding, tatami mats, and carpets, it is possible to move the insecticidal treatment device and It is preferable to be able to travel to a place and perform insecticidal treatment.

The most commonly used insecticidal treatment apparatus of this type has an automobile equipped with a treatment container capable of keeping the internal temperature at a treatment temperature of about 80.degree.
The object to be processed is exposed to the processing temperature for several hours in the processing container.

[0004]

In the conventional insecticidal treatment apparatus, the temperature in the treatment container accommodating the object to be treated is maintained at about 80 ° C. and the treatment is carried out for several hours. When the temperature inside the processing container is 80 ℃, the temperature inside the object is 60 ℃.
However, even at such a temperature, it was not possible to completely eliminate the mites lurking inside the object to be treated even after several hours of treatment. Since mites have a very strong reproductive ability, if a small amount of living mites remain on the object to be treated, they will proliferate in a short period of time and the treatment will be meaningless. Therefore, with respect to mites, an insecticidal treatment device that cannot achieve 100% insecticidal effect is not so meaningful.

Even when the temperature inside the processing container is maintained at about 80 ° C., if the processing time is extended to about 24 hours, a 100% extermination effect can be expected, but such a long time is required. If so, the processing efficiency is remarkably reduced and it is not practical. Further, if the heat treatment temperature is made extremely high, a 100% extermination effect can be achieved in a short time, but if the treatment temperature is made high, the object to be treated may be damaged.

Instead of heat treatment, it is possible to fill the processing container with a processing gas containing a component having an insecticidal effect and leave it for a certain period of time. However, even if the processing container is simply filled with an insecticidal gas to store the object to be processed in the processing container, it takes a long time to permeate the processing gas into the inside of the object to be processed. Therefore, it is not possible to exterminate 100% of the mites lurking inside the object to be treated.

[0007] An object of the present invention is to provide a movable insecticidal treatment device capable of achieving 100% extermination effect in a short time.

[0008]

In the insecticidal treatment apparatus of the present invention, a treatment container having an airtight structure having an openable / closable lid so as to accommodate an object to be treated therein, and treatment in the treatment container A processing gas supply device connected through a gas supply valve to supply a processing gas containing an active ingredient having insecticidal properties into the processing container through the valve, an aeration valve connected to the processing container, and exhaust to the processing container. And a vacuum pump connected through a valve for use in a vehicle driven by an internal combustion engine. The drive shaft of the vacuum pump is connected to an auxiliary output shaft derived from a transmission provided between the internal combustion engine and the drive wheels of the vehicle.

In addition to the above structure, a gas decomposing device that is connected to the exhaust port of the vacuum pump and decomposes the processing gas discharged from the vacuum pump can be provided.

To dry the object to be processed,
A warm air supply device connected to the processing container through the ventilation valve to supply warm air into the processing container through the ventilation valve, and an exhaust device connected to the processing container through the exhaust valve can be further provided. ..

The active ingredient of the processing gas is preferably ethylene oxide. In that case, the processing gas is preferably a mixed gas of carbon dioxide gas and at least 3% by volume or more of ethylene oxide gas.

[0012]

As described above, when the processing container has the airtight structure and the processing chamber is provided with the vacuum pump for vacuuming the processing container and the processing gas supply device for supplying the processing gas into the processing container, After the object to be processed is accommodated in the container, the air in the object to be processed can be discharged by evacuating the inside of the processing container. Further, by supplying the processing gas into the processing container in a state where the air inside the processing object is discharged, the processing gas can be sufficiently permeated into the inside of the processing object. Therefore, it is possible to obtain a 100% extermination effect in a short time by using the processing gas.
Further, after the processing is completed, the processing gas in the processing container and the processing gas that has permeated into the object to be processed can be discharged by the vacuum pump. Can be prevented.

Further, when a gas decomposing device for decomposing the processing gas discharged from the processing container through the vacuum pump is provided, the processing gas is directly discharged into the atmosphere to pollute the atmosphere or harm the surrounding people. It can be prevented from affecting.

Further, when a hot air supply device for supplying hot air into the processing container and an exhaust device for discharging the gas in the processing container are provided, the processing is completed, and the gas in the processing container is vacuum pumped. After the gas is discharged, hot air can be supplied into the processing container to dry the object to be processed, so that the processing gas remaining in the object to be processed can be removed.

When a gas containing 3% by volume or more of ethylene oxide is used as the processing gas, the insecticidal effect of 100% can be obtained by setting the processing time to 3 minutes or more. Further, when ethylene oxide gas is released into the atmosphere, it is finally decomposed into a harmless gas and has no residue, so it is safe.

[0016]

1 and 2 show an embodiment of the present invention. FIG. 1 is a block diagram showing the overall structure, and FIG. 2 is a schematic view showing an example of a state in which each part is mounted on an automobile. It is the external view shown.

In FIG. 1, reference numeral 1 denotes an airtight processing container,
The processing container 1 has a door 1a that can be opened and closed at one end thereof. The door 1a is supported by a hinge 1b, and the tip of a piston rod 3a of a hydraulic cylinder 3 rotatably supported by a pin 2 on the side surface of the container 1 is connected to the door 1a via a pin 4. A hydraulic pump 5 for driving the hydraulic cylinder 3 and an oil tank 6 for supplying hydraulic oil to the hydraulic pump are provided. By driving the hydraulic pump 5 to operate the hydraulic cylinder 3, the door 1a is opened and closed. It can be operated. Further, by operating the hydraulic cylinder 3, the door 1a can be held in a closed state. The hydraulic pump 5 is driven by a vehicle-mounted battery.

Reference numeral 7 is a cylinder containing a liquefied processing gas, and the discharge port of the cylinder is connected to an inlet 11a of a carburetor 11 through a processing gas supply valve 9 consisting of a piping 8 and an air valve and a piping 10. Outlet 11b of vaporizer 11
Is connected to the processing container 1 through a pipe 12. A water heater 15 is also connected to the vaporizer 11 through pipes 13 and 14, and the water heater 15 → the pipe 13 → the vaporizer 11 →
Hot water is circulated in a route from the pipe 14 to the water heater 15. The vaporizer 11 heats the heat of this hot water into the heat exchanger 11c.
The liquefied process gas is vaporized by being supplied to the liquefied process gas via the, and the process gas is supplied into the process container 1.
In this embodiment, a mixed gas of carbon dioxide gas and 3% by volume or more of ethylene oxide gas is used as the processing gas.

The cylinder 7, vaporizer 11, processing gas supply valve 9 and pipes 8, 10 and 12 constitute a processing gas supply device.

The water heater 15 heats water by using as a heat source a heater which generates heat by burning a fuel mounted on an automobile for driving an internal combustion engine (diesel engine). As the heater, one used as a heater for a heating device in a large vehicle such as a truck is preferably used. In the figure, 15a is an exhaust pipe for discharging exhaust gas from the water heater, and 15b is a muffler.
16 is pipes 17 and 1 in the pipes 13 and 14, respectively.
8 is a hot air supply device connected via 8, and the hot air supply device heats air with hot water supplied from the water heater 15 to generate hot air. The hot air outlet of the hot air supply device 16 is connected to the processing container 1 through a ventilation valve 20 which is an air valve.

Reference numeral 21 denotes an exhaust device composed of an air pump or a blower driven by an on-vehicle battery, and this exhaust device is connected to the processing container 1 via an exhaust valve 22 composed of an air valve.

The processing container 1 also includes a check valve 23 and a pipe 24.
And vacuum valve 25 consisting of a manual valve and piping 26
The suction port of the vacuum pump 30 is connected via a check valve 27 and a manually operated valve 28 that controls the operation of the vacuum pump. The exhaust port of the vacuum pump 30 is connected to the gas decomposition device 31, and when the processing gas is discharged from the vacuum pump, the processing gas is thermally decomposed by the gas decomposition device 31 and most of the processing gas is converted into harmless gas. It is designed to be discharged to the outside later. This gas decomposition device 31
For example, it is possible to use a material which is decomposed by applying heat to the processing gas or burning the processing gas.

The vacuum pump 30 is driven by an auxiliary output shaft derived from a transmission provided between an internal combustion engine that drives the automobile and the drive wheels of the automobile. The manually operated valve 28 can be switched between a neutral position and an operating position. When the manually operated valve 28 is set to the neutral position, the vacuum pump 30 does not perform the suction operation and the valve 28
The vacuum pump 30 performs the suction operation only when is switched to the operating position.

An auxiliary vacuum tank 3 is provided at a connection point between the manual valve 25 and the check valve 27 via a pipe 33 and a manual valve 34.
5 is connected. A pressure adjusting valve 36 is connected to the auxiliary vacuum tank 35, and when the degree of vacuum in the auxiliary vacuum tank becomes higher than a set value (for example, -400 mmHg), the pressure adjusting valve opens to open the auxiliary vacuum tank to the outside air. It is designed to communicate with. A nozzle of a vacuum cleaner can be connected to the auxiliary vacuum tank 35 via a hose (not shown), and by operating the cleaner by the negative pressure in the auxiliary vacuum tank 35, the insecticidal treatment is completed. The mite carcasses adhering to the processed material can be removed by suction.

The process gas supply valve 9, which is an air valve, the ventilation valve 20, and the exhaust valve 22, are each provided with a predetermined pipe from the pressure tank 37 and solenoid valves 38 and 39.
And 40 through which compressed air is supplied. The pressure tank 37 is connected with a compressor 41 driven by an on-vehicle battery, and the inside of the pressure tank 37 is always kept at a predetermined pressure or higher by the compressor 41. The valves 9, 20 and 22 are designed to be opened only when compressed air is supplied through the solenoid valves 38 to 40, and when the solenoid valves 38, 39 and 40 are closed, the valves 9, 20 and 22 are opened. It is supposed to close immediately. When the air valve is used, the opening / closing operation can be performed even if the valve is clogged with dust or the like, so that the operation can be ensured.

The processing container 1 is also provided when the pressure inside the processing container becomes higher than the atmospheric pressure by a predetermined value or more (for example, +
Safety valve 42 that opens when the pressure exceeds 0.07 kg / cm ²
Is installed.

As shown in FIG. 2, each of the above-mentioned parts is a track 5
It is installed in 0. In the example shown in FIG. 2, the processing tank 1 is installed on the loading platform 51 of the truck with the door 1a thereof positioned at the rear part, and the auxiliary vacuum tank 35 is provided between the processing container 1 and the cab 52. The vaporizer 11 is arranged. Further, the pressure tank 37 and the compressor 41 are attached to the side surface of the processing container 1, and the pressure tank 37 of the processing container 1 is attached.
On the side opposite to the side where the
(Not shown in FIG. 2) is attached. A space for arranging the cylinder 7 is provided between the processing container 1 and the operator's cab 52, and the cylinder arranged in the space is connected to the vaporizer 11 through the processing gas supply valve.

The vacuum pump 30 is attached to a chassis 53 arranged under the cargo bed 51, and the drive shaft 30a of the vacuum pump 30 outputs the output of the internal combustion engine to the drive wheels 54 of the truck.
Is connected to an auxiliary output shaft (usually referred to as a PTO shaft) 55a derived from a transmission 55 that is transmitted to the vehicle.

Next, using the above insecticidal treatment apparatus, a futon,
A procedure for exterminating mites that live in objects to be treated such as tatami mats and carpets will be described. First the valves 9, 20 and 22
With the lid closed, the lid 1a is opened and the object to be processed is housed in the processing container 1. Also, the water heater 15 is operated to supply hot water to the vaporizer 11. After accommodating the object to be processed in the processing container 1, the lid 1a is closed to seal the processing container 1. Next, with the valves 25 and 28 opened and the valve 34 closed, the manually-operated valve 28 is switched to the operating position and the vacuum pump 3
0 is operated, whereby the inside of the processing container 1 is evacuated. The pressure gauge attached to the processing container 1 is monitored, and when the degree of vacuum in the processing container 1 reaches a predetermined value, the manual valve 25 is closed, the manual operation valve 28 is switched to the neutral position, and the suction of the vacuum pump 30 is performed. Stop the operation.

Next, the electromagnetic valve 38 is opened to open the processing gas supply valve 9, and the processing gas is supplied from the cylinder 7 through the vaporizer 11 into the processing container 1. Since the object to be processed contained in the processing container 1 is in a degassed state, when the processing gas is supplied into the processing container 1, the processing gas sufficiently permeates into the inside of the object to be processed. When the pressure in the processing container 1 reaches almost atmospheric pressure, the electromagnetic valve 38 is closed and the processing gas supply valve 9 is closed, and then 3 minutes or more, preferably 1
The processing container 1 is kept sealed for a processing time of about 0 minutes. During this time, the manual valve 34 is opened to manually operate the valve 2.
8 is switched to an operating position, and the auxiliary vacuum tank 35 is evacuated. The manual valve 34 is closed when the degree of vacuum in the auxiliary vacuum tank 35 reaches a predetermined value.

The ethylene oxide gas used as an active ingredient of the processing gas in this embodiment has been conventionally used exclusively for sterilization in hospitals and the like. According to the experiments of the present inventor, when this gas is used for insecticidal treatment, if the concentration of ethylene oxide is set to 3% by volume or more, a treatment time of 3 minutes or more gives a 100% extermination effect. It is clear that it will be done. It is known that ethylene oxide is easily decomposed into a safe gas (carbon dioxide gas and water) when released into the atmosphere. This means that the safety of gas treatment is extremely high. Moreover, since the amount of ethylene oxide used is small, the economical efficiency of insecticidal treatment can be improved.

After the lapse of a predetermined processing time, the vacuum pump 30 is operated to discharge the processing gas in the processing container 1. At this time, the processing gas discharged from the vacuum pump is thermally decomposed by the gas decomposition device 31, converted into a safe gas, and then discharged into the atmosphere. After the degree of vacuum in the processing container 1 reaches a predetermined value, the vacuum pump is stopped and the electromagnetic valve 39 is opened to open the ventilation valve 20 so that the room temperature air is first allowed to flow into the processing container 1. After setting the pressure in the processing container 1 to the atmospheric pressure, the electromagnetic valve 40 is opened and the exhaust valve 22 is opened.
The exhaust device 21 is operated. At this time, the warm air supply device 16 is operated to supply the air heated to about 40 to 50 ° C. into the processing container 1 through the aeration valve 20. This promotes the volatilization of ethylene oxide remaining in the object to be treated. After supplying the hot air into the processing container 1 for a predetermined time (for example, 5 minutes), the exhaust device 21 is stopped and the ventilation valve 20 and the exhaust valve 22 are closed. After that, the lid 1a is opened, the object to be processed is taken out from the processing container 1, and the mite extermination processing is completed.

Although the warm air supply device is provided in the above embodiment, this warm air supply device may be omitted. Especially when ethylene oxide gas is used as a processing gas, the ethylene oxide remaining on the object to be processed is easily vaporized by leaving it for a predetermined time and decomposed into a safe gas. But there is no particular problem.
When the warm air supply device is omitted, the exhaust device 21 and the exhaust valve 22 can also be omitted. Even when the warm air supply device 16 is omitted, it is necessary to provide the ventilation valve 20 in order to supply the air into the processing container 1 after the processing is completed and bring the inside of the processing container 1 to the atmospheric pressure. is there.

Although the lid 1a of the processing container 1 is operated by the hydraulic cylinder in the above embodiment, the lid 1a may be manually operated. In this case, a manual lock mechanism for locking the lid 1a in the closed state is provided.

Although the gas decomposing device 31 is provided in the above embodiment, this gas decomposing device can be omitted when a processing gas which can be discharged into the atmosphere as it is is used.

In the above embodiment, manual valves are used as the valves 25 and 34, but electric valves and air valves may be used as these valves.

[0037]

As described above, according to the present invention, the processing container has an airtight structure, the vacuum pump for vacuuming the inside of the processing container is provided, and the processing gas supply for supplying the processing gas into the processing container is provided. Since the device is provided, by supplying the processing gas into the processing container after the processing object is accommodated in the processing container, the inside of the processing container is evacuated to exhaust the air existing in the processing object. The processing gas can be sufficiently permeated into the object to be processed. Therefore, it is possible to obtain a 100% extermination effect in a short time by using the processing gas.

Further, according to the present invention, since the processing gas in the processing container and the processing gas that has permeated into the object to be processed can be discharged by the vacuum pump after the processing is completed, the work can be performed when the processing container is opened. It is possible to prevent the person from being damaged by the processing gas.

Further, in the invention described in claim 2, since the gas decomposing device for decomposing the processing gas discharged from the processing container through the vacuum pump is provided, the processing gas is directly discharged into the atmosphere to pollute the atmosphere. , It is possible to prevent harm to the people around.

According to the third aspect of the invention, after the gas in the processing container is exhausted by the vacuum pump, hot air can be supplied into the processing container to dry the object to be processed. There is an advantage that the processing gas remaining in the object to be processed can be removed.

Further, according to the invention described in claim 4, since the gas containing 3% by volume or more of ethylene oxide is used as the processing gas, by setting the processing time to 3 minutes or more,
The insecticidal effect of 00% can be obtained, and the processing time can be shortened.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an overall configuration of an embodiment of the present invention.

FIG. 2 is an external view schematically showing a state where each part of the embodiment of the present invention is mounted on an automobile.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Process container, 7 ... Cylinder, 9 ... Process gas supply valve, 11 ... Vaporizer, 15 ... Water heater, 20 ... Aeration valve, 21 ... Exhaust device, 22 ... Exhaust valve, 25 ... Vacuuming valve , 30 ... vacuum pump, 31 ... gas decomposition device, 55 ... transmission, 55a ... auxiliary output shaft.

Claims (4)

[Claims] 1. A treatment container having an airtight structure, which is provided with a lid that can be opened and closed so as to accommodate an object to be treated, and a treatment gas supply valve connected to the treatment container to connect the treatment container with insecticidal properties. A processing gas supply device for supplying a processing gas containing an active ingredient having the same into the processing container through the valve;
An aeration valve connected to the processing container, and a vacuum pump connected to the processing container through a vacuuming valve are mounted on a vehicle driven by an internal combustion engine, and the drive shaft of the vacuum pump is An insecticidal treatment device, which is connected to an auxiliary output shaft derived from a transmission provided between the internal combustion engine and a drive wheel of a vehicle. 2. The insecticidal treatment apparatus according to claim 1, further comprising a gas decomposing device connected to an exhaust port of the vacuum pump and decomposing a processing gas discharged from the vacuum pump. 3. A warm air supply device connected to the processing container through the ventilation valve to supply warm air into the processing container through the ventilation valve, and an exhaust gas connected to the processing container through an exhaust valve. The insecticidal treatment apparatus according to claim 1, further comprising a device. 4. An effective component of the processing gas is ethylene oxide, and the processing gas is carbon dioxide gas and at least 3% by volume.
The insecticidal treatment apparatus according to claim 1, wherein the insecticidal treatment apparatus comprises a mixed gas of the above ethylene oxide gas.