阅读说明：本技术 用于木材的熏蒸杀虫方法 (Fumigating insecticidal method for wood ) 是由 刘建鹏 于 2019-08-23 设计创作，主要内容包括：本发明公开了用于木材的熏蒸杀虫方法,包括木材品放置—检漏—施药—安装告示—浓度检测—补充投药—通风散气—取下告示。本发明通过采用时间继电器和熏蒸气体浓度分析仪器对熏蒸室内的杀虫剂浓度进行检测,通过采用施药管道与杀虫汽化器施药杀虫和通过采用压力计和秒表对熏蒸室气密性进行查漏检测,为用户提供了一种能保证杀虫剂施药浓度和时间、杀虫处理场所气密性优秀防止气体外泄造成人员受到生命安全危害,并且杀虫优秀的用于木材的熏蒸杀虫方法。(The invention discloses a fumigating and pest killing method for wood, which comprises the steps of wood placement, leak detection, pesticide application, installation of a notice, concentration detection, supplementary pesticide application, ventilation and gas dissipation and removal of the notice. The invention provides a fumigation insecticidal method for wood, which can ensure pesticide application concentration and time, has excellent insecticidal treatment place airtightness, prevents personnel from being harmed by life safety due to gas leakage and has excellent insecticidal property, and is used for a user by adopting a time relay and a fumigation gas concentration analyzer to detect the concentration of an insecticide in a fumigation chamber, adopting a pesticide application pipeline and an insecticidal vaporizer to apply pesticides to kill insects and adopting a pressure gauge and a stopwatch to detect leakage of the fumigation chamber airtightness.)

1. The fumigating insect killing method for the wood comprises the steps of placing the wood product, detecting leakage, applying pesticide, installing notice, detecting concentration, supplementing pesticide application, ventilating and exhausting and taking down the notice, and is characterized in that:

placing wood products: putting wood products to be processed in a fumigation chamber coated with two hard cement layers, wherein the thickness of each layer is 0.7-1cm, the fumigation chamber is provided with a pesticide application pipeline, a gas stirring fan, a gas discharge device, a gas detection sampling device, a heating device and a fire fighting device, the wood products are stacked on two sides in the fumigation chamber, a channel of 0.6m is reserved in the middle, the distance between the stacked wood products and the ceiling of the fumigation chamber is more than 0.6m, and the total area of the wood products is less than 70% of the indoor area of the fumigation chamber;

and (3) leak detection: closing the exhaust holes of the fumigation chamber, respectively connecting the exhaust holes with a pressure gauge, then opening a circulating fan in the fumigation chamber, closing the circulating fan in real time when the pressure gauge detects that the pressure in the fumigation chamber rises to 250-300 Pa, observing the pressure change of the pressure gauge, immediately starting a stopwatch to time when the pressure gauge attenuates to 200Pa, immediately stopping and recording the time on the stopwatch when the pressure in the pressure gauge attenuates to 100Pa from 200Pa, if the time displayed on the stopwatch is more than 10 seconds, determining that the air tightness of the fumigation chamber reaches the standard requirement, otherwise, not reaching the standard, and closing a valve connected with the pressure gauge in real time when the time is detected to reach the standard, and finishing the air tightness detection;

application of the medicine: a copper pipe with the diameter of 1-1.2cm is assembled in a fumigation chamber to serve as a pesticide application pipeline, the pesticide application pipeline is connected with a pesticide vaporizer in series, the vaporizer is formed by twisting a copper pipe with the length of 8-12m and the diameter of 0.9-1.2cm into a spring shape, a pound scale or a distributor is used for quantitatively processing the fumigant pesticide when the vaporizer is applied in water bath, the quantitative error of the pesticide applied each time is less than 25g, the outlet of the pesticide application pipeline is arranged in front of or behind a gas stirring fan of the fumigation chamber, after the vaporizer of the fumigation chamber is started, the pesticide is vaporized by 100 percent, the pesticide feeding amount per minute is controlled to be about 500-600 g, so that the pesticide entering the fumigation chamber is ensured not to have harmful fog drops, and after the pesticide application is finished, the gas stirring device continues to operate for 10-15 minutes;

installation and announcement: after the drug delivery is started, warning signs of 'toxic gas fumigation danger' are placed 20m outside the fumigation chamber, and all operators in a warning area are required to wear gas masks;

and (3) concentration detection: through a time relay, a fumigation gas concentration analysis instrument detects the concentration of the insecticide in the fumigation chamber;

supplementary administration: when the difference between the current actual detected concentration value and the set concentration value is less than or equal to 5g/m by the concentration comparison after detection³When the amount is more than 5g/m, the fumigation time is prolonged by 8-12h³When the difference ratio is more than 5g/m³In the process, real-time medicine supplement is needed, the fumigation time is prolonged by 8-12h, and before medicine supplement, leakage detection is carried out again.

Ventilating and air dispersing: after the fumigation processing is finished, starting an exhaust device in real time, completely opening a fumigation chamber door after an exhaust hole exhausts for 5 minutes, and performing next treatment after the exhaust hole exhausts for one hour;

taking down the announcement: and after the exhaust reaches one hour, detecting the concentration of the residual pesticide gas in the fumigation chamber by a fumigation gas concentration analyzer in real time, and taking down a warning board for 'toxic gas fumigation danger' when the detection reaches the standard.

2. The fumigated insecticidal method for wood according to claim 1, wherein the insecticide is methyl bromide.

3. The fumigation insecticidal method for wood according to claim 1, wherein said amount of drug supplementation is (difference between current actual detected concentration value and set concentration value and 5 g/m)³The difference multiplied by 1.6 times the volume of the stack of wood items) divided by 1000.

4. The method as claimed in claim 1, wherein the pesticide applying pipe is a copper pipe with a diameter of 1-1.2cm and is connected with a pesticide vaporizer in series, the pesticide vaporizer is made of copper pipe with a diameter of 0.9-1.2cm and is twisted into a spring shape by a length of 8-12m, the copper pipe of the pesticide vaporizer is soaked in water bath, the pesticide is applied by a weighing scale or a distributor with a quantitative error of less than 25g per application, and the outlet of the pesticide applying pipe is arranged in front of or behind a gas stirring fan in the fumigation chamber, the gas discharging device adopts a centrifugal exhauster and an axial exhauster, the centrifugal exhauster is used for high-altitude discharge of pesticide gas, the axial exhauster is used for horizontal-flow discharge of pesticide gas, the gas detecting and sampling device is a copper pipe with a diameter of 0.7-1.0cm, the heating device is fixedly installed indoors and communicated outdoors to be connected with the fumigation gas concentration analysis instrument, the temperature of the fumigation chamber is detected in real time by the heating device, and heating treatment is carried out in real time according to the temperature requirement of the fumigation chamber.

5. The method of claim 4 wherein the fumigation chamber is at a temperature of > 10 ℃.

Technical Field

The invention relates to the field of wood product insecticidal treatment methods, in particular to a fumigation insecticidal treatment method for wood.

Background

The wood has wide application, and the wood can not be used in the industries of railways, traffic, buildings, chemical engineering, textile, paper making, military, aerospace and the like, and the industries of manufacturing various tools, farm tools, furniture, artware, musical instruments and the like.

With the widespread use of wood, wood borers are the biggest enemies harming the life span of wood, and if wood is subjected to insecticidal treatment, it becomes an important subject in wood and wood products.

The fumigation and pest killing is to apply certain amount of fumigation pesticide in a closed space and maintain certain closed time and certain concentration of fumigation pesticide gas, so that pests carried (or possibly carried) by the treated objects in the closed space are subjected to quarantine treatment with certain fumigation amount (concentration time product) to ensure that the death rate of the pests reaches the specified requirement.

Disclosure of Invention

The invention aims to provide a fumigating insecticidal method for wood, which can ensure the pesticide application concentration and time, has excellent air tightness of insecticidal treatment places, prevents personnel from being harmed by life safety due to gas leakage and has excellent insecticidal property.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the fumigating insect killing method for the wood comprises the steps of placing the wood product, detecting leakage, applying pesticide, installing notice, detecting concentration, supplementing pesticide application, ventilating and exhausting gas and taking down notice:

placing wood products: putting wood products to be processed in a fumigation chamber coated with two hard cement layers, wherein the thickness of each layer is 0.7-1cm, the fumigation chamber is provided with a pesticide application pipeline, a gas stirring fan, a gas discharge device, a gas detection sampling device, a heating device and a fire fighting device, the wood products are stacked on two sides in the fumigation chamber, a channel of 0.6m is reserved in the middle, the distance between the stacked wood products and the ceiling of the fumigation chamber is more than 0.6m, and the total area of the wood products is less than 70% of the indoor area of the fumigation chamber;

and (3) leak detection: closing the exhaust holes of the fumigation chamber, respectively connecting the exhaust holes with a pressure gauge, then opening a circulating fan in the fumigation chamber, closing the circulating fan in real time when the pressure gauge detects that the pressure in the fumigation chamber rises to 250-300 Pa, observing the pressure change of the pressure gauge, immediately starting a stopwatch to time when the pressure gauge attenuates to 200Pa, immediately stopping and recording the time on the stopwatch when the pressure in the pressure gauge attenuates to 100Pa from 200Pa, if the time displayed on the stopwatch is more than 10 seconds, determining that the air tightness of the fumigation chamber reaches the standard requirement, otherwise, not reaching the standard, and closing a valve connected with the pressure gauge in real time when the time is detected to reach the standard, and finishing the air tightness detection;

application of the medicine: a copper pipe with the diameter of 1-1.2cm is assembled in a fumigation chamber to serve as a pesticide application pipeline, the pesticide application pipeline is connected with a pesticide vaporizer in series, the vaporizer is formed by twisting a copper pipe with the length of 8-12m and the diameter of 0.9-1.2cm into a spring shape, a pound scale or a distributor is used for quantitatively processing the fumigant pesticide when the vaporizer is applied in water bath, the quantitative error of the pesticide applied each time is less than 25g, the outlet of the pesticide application pipeline is arranged in front of or behind a gas stirring fan of the fumigation chamber, after the vaporizer of the fumigation chamber is started, the pesticide is vaporized by 100 percent, the pesticide feeding amount per minute is controlled to be about 500-600 g, so that the pesticide entering the fumigation chamber is ensured not to have harmful fog drops, and after the pesticide application is finished, the gas stirring device continues to operate for 10-15 minutes;

installation and announcement: after the drug delivery is started, warning signs of 'toxic gas fumigation danger' are placed 20m outside the fumigation chamber, and all operators in a warning area are required to wear gas masks;

and (3) concentration detection: through a time relay, a fumigation gas concentration analysis instrument detects the concentration of the insecticide in the fumigation chamber;

supplementary administration: when the difference between the current actual detected concentration value and the set concentration value is less than or equal to 5g/m3, the fumigation time is prolonged by 8-12h, and when the difference is more than 5g/m³When the difference ratio is more than 5g/m³In the process, real-time medicine supplement is needed, the fumigation time is prolonged by 8-12h, and before medicine supplement, leakage detection is carried out again.

Ventilating and air dispersing: after the fumigation processing is finished, starting an exhaust device in real time, completely opening a fumigation chamber door after an exhaust hole exhausts for 5 minutes, and performing next treatment after the exhaust hole exhausts for one hour;

taking down the announcement: and after the exhaust reaches one hour, detecting the concentration of the residual pesticide gas in the fumigation chamber by a fumigation gas concentration analyzer in real time, and taking down a warning board for 'toxic gas fumigation danger' when the detection reaches the standard.

Preferably, the pesticide is methyl bromide.

Preferably, the medicine supplementing quantity is (the difference between the current actual detection concentration value and the set concentration value is 5 g/m)³The difference multiplied by 1.6 times the volume of the stack of wood items) divided by 1000.

Preferably, the pesticide applying pipeline is a copper pipe with the diameter of 1-1.2cm and is connected with a pesticide vaporizer in series, the pesticide vaporizer is formed by twisting a copper pipe with the length of 8-12 meters and the diameter of 0.9-1.2cm into a spring shape, the copper pipe of the pesticide vaporizer is soaked in water bath, the pesticide is dosed by a platform scale or a distributor when in application, the dosing error of each time of application is less than 25g, the outlet of the pesticide applying pipe is arranged in front of or behind a gas stirring fan in the fumigation chamber, the gas stirring fan is arranged in the fumigation chamber, the gas discharging device adopts a centrifugal type exhauster and an axial type exhauster, the centrifugal type exhauster is used for high-altitude discharge of pesticide gas, the centrifugal type exhauster is used for horizontal-flow discharge of pesticide gas, the gas detecting and sampling device is a copper pipe with the diameter of 0.7-1.0cm and is fixedly arranged in the chamber and is connected with a fumigation gas concentration analyzer through the outside the chamber, the heating device detects the temperature of the fumigation chamber in real time and carries out heating treatment according to the temperature requirement of the fumigation chamber in real time.

Preferably, the temperature requirement of the fumigation chamber is > 10 ℃.

The invention has the beneficial effects that:

the invention provides a fumigation insecticidal method for wood, which can ensure pesticide application concentration and time, has excellent insecticidal treatment place airtightness, prevents personnel from being harmed by life safety due to gas leakage and has excellent insecticidal property, and is used for a user by adopting a time relay and a fumigation gas concentration analyzer to detect the concentration of an insecticide in a fumigation chamber, adopting a pesticide application pipeline and an insecticidal vaporizer to apply pesticides to kill insects and adopting a pressure gauge and a stopwatch to detect leakage of the fumigation chamber airtightness.

Drawings

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

According to the illustration of FIG. 1:

the fumigating insect killing method for the wood comprises the steps of placing the wood product, detecting leakage, applying pesticide, installing notice, detecting concentration, supplementing pesticide application, ventilating and exhausting gas and taking down notice:

placing wood products: putting wood products to be processed in a fumigation chamber coated with two hard cement layers, wherein the thickness of each layer is 0.7-1cm, the fumigation chamber is provided with a pesticide application pipeline, a gas stirring fan, a gas discharge device, a gas detection sampling device, a heating device and a fire fighting device, the wood products are stacked on two sides in the fumigation chamber, a channel of 0.6m is reserved in the middle, the distance between the stacked wood products and the ceiling of the fumigation chamber is more than 0.6m, and the total area of the wood products is less than 70% of the indoor area of the fumigation chamber;

and (3) leak detection: closing the exhaust holes of the fumigation chamber, respectively connecting the exhaust holes with a pressure gauge, then opening a circulating fan in the fumigation chamber, closing the circulating fan in real time when the pressure gauge detects that the pressure in the fumigation chamber rises to 250-300 Pa, observing the pressure change of the pressure gauge, immediately starting a stopwatch to time when the pressure gauge attenuates to 200Pa, immediately stopping and recording the time on the stopwatch when the pressure in the pressure gauge attenuates to 100Pa from 200Pa, if the time displayed on the stopwatch is more than 10 seconds, determining that the air tightness of the fumigation chamber reaches the standard requirement, otherwise, not reaching the standard, and closing a valve connected with the pressure gauge in real time when the time is detected to reach the standard, and finishing the air tightness detection;

application of the medicine: a copper pipe with the diameter of 1-1.2cm is assembled in a fumigation chamber to serve as a pesticide application pipeline, the pesticide application pipeline is connected with a pesticide vaporizer in series, the vaporizer is formed by twisting a copper pipe with the length of 8-12m and the diameter of 0.9-1.2cm into a spring shape, a pound scale or a distributor is used for quantitatively processing the fumigant pesticide when the vaporizer is applied in water bath, the quantitative error of the pesticide applied each time is less than 25g, the outlet of the pesticide application pipeline is arranged in front of or behind a gas stirring fan of the fumigation chamber, after the vaporizer of the fumigation chamber is started, the pesticide is vaporized by 100 percent, the pesticide feeding amount per minute is controlled to be about 500-600 g, so that the pesticide entering the fumigation chamber is ensured not to have harmful fog drops, and after the pesticide application is finished, the gas stirring device continues to operate for 10-15 minutes;

installation and announcement: after the drug delivery is started, warning signs of 'toxic gas fumigation danger' are placed 20m outside the fumigation chamber, and all operators in a warning area are required to wear gas masks;

and (3) concentration detection: through a time relay, a fumigation gas concentration analysis instrument detects the concentration of the insecticide in the fumigation chamber;

supplementary administration: when the difference between the current actual detected concentration value and the set concentration value is less than or equal to 5g/m3, the fumigation time is prolonged by 8-12h, and when the difference is more than 5g/m³When the difference ratio is more than 5g/m³In the process, real-time medicine supplement is needed, the fumigation time is prolonged by 8-12h, and before medicine supplement, leakage detection is carried out again.

Ventilating and air dispersing: after the fumigation processing is finished, starting an exhaust device in real time, completely opening a fumigation chamber door after an exhaust hole exhausts for 5 minutes, and performing next treatment after the exhaust hole exhausts for one hour;

taking down the announcement: and after the exhaust reaches one hour, detecting the concentration of the residual pesticide gas in the fumigation chamber by a fumigation gas concentration analyzer in real time, and taking down a warning board for 'toxic gas fumigation danger' when the detection reaches the standard.

Because the insecticide is methyl bromide, which is also called methyl bromide or methyl bromide, is colorless and tasteless liquid, has strong fumigating effect, can kill various pests with high efficiency and broad spectrum, and is a strong nerve poison which can directly damage the skin, the lung, the kidney and the liver of people, corresponding safety equipment is required and certain ventilation time is required to remove the residual methyl bromide, the concentration detection step of the invention ensures the concentration of the insecticide when the wood is fumigated in the fumigation chamber, and the ventilation and gas dissipation are carried out in the fumigation chamber after the insecticide is applied by taking down the informing step, thereby preventing workers from inhalation poisoning.

Because the medicine supplementing quantity is (the difference between the current actual detection concentration value and the set concentration value is 5 g/m)³The difference is multiplied by 1.6 and the wood stacking volume) is divided by 1000, after the fumigation gas concentration analysis instrument detects the gas concentration in the fumigation chamber in real time, through real-time analysis, the fumigation time is prolonged, and medicine supplement is carried out, so that the wood is guaranteed to be fumigated and killed, and the processed wood is guaranteed to be killed in an all-round manner.

The pesticide applying pipeline is a copper pipe with the diameter of 1-1.2cm and is connected with a pesticide vaporizer in series, the pesticide vaporizer is formed by twisting the copper pipe with the length of 8-12 meters and the diameter of 0.9-1.2cm into a spring shape, the copper pipe of the pesticide vaporizer is soaked in water bath, the pesticide is quantitatively applied by a platform scale or a distributor, the quantitative error of each pesticide application is less than 25g, the outlet of the pesticide applying pipe is arranged in front of or behind a gas stirring fan in a fumigation chamber, the gas stirring fan is arranged in the fumigation chamber, the gas discharging device adopts a centrifugal type exhauster and an axial type exhauster, the centrifugal type exhauster is used for high-altitude pesticide gas discharge, the axial type exhauster is used for horizontal-flow pesticide gas discharge, the gas detecting and sampling device is a copper pipe with the diameter of 0.7-1.0cm and is fixedly arranged in the chamber and is communicated with a fumigation gas concentration analyzer outdoors, the heating device detects the temperature of the fumigation chamber in real time and carries out heating treatment according to the temperature requirement of the fumigation chamber in real time.

The temperature of the fumigation chamber is required to be higher than 10 ℃, the temperature of the fumigation chamber is detected in real time through the heating device, when the temperature detected in real time is lower than 10 ℃, the heating device is controlled in real time to heat the fumigation chamber, and when the temperature is higher than 10 ℃, the continuous heating is cancelled.

Because the wood products to be processed are placed in the fumigation chamber coated with two hard cement layers, each layer is 0.7-1cm thick, the wood products are required to be stacked on two sides in the fumigation chamber, a channel of 0.6m is reserved in the middle, the distance between the wood product stack and the ceiling of the fumigation chamber is more than 0.6m, the total area of the wood products is less than 70% of the indoor area of the fumigation chamber, the wood products are stacked, the wood products are fumigated and killed comprehensively and effectively in the fumigation chamber, and the air tightness of the fumigation chamber is ensured by coating two hard cement layers with the thickness of 0.7-1cm, and the life safety hazard of people caused by the leakage of air is prevented.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.