Low temperature freezing insecticide disinfection room for ancient books

Low temperature freezing insecticide for ancient books is a method of treating pests in ancient books, first invented by the Yale University Library in the United States. Put the collection into a polyethylene plastic bag and seal it. At the same time, start the freezer and lower the temperature to -20~-30 ℃ before putting the collection back in. After being stored in a freezer at -20 to -30 ℃ for about a week, insects will freeze to death. The advantage of low-temperature freezing insecticide is that it does not damage the structure and content of books, and can kill various types of pests. However, this method also has some drawbacks, such as requiring professional equipment and personnel to operate, the processing may be complex, and the processing cost may be high. It should be noted that not all ancient books are suitable for using low-temperature freezing insecticidal methods. For example, insecticides that are not suitable for painted calligraphy and painting works or painted wooden relics, as low temperatures can cause the adhesive components in these collections to become brittle. Similarly, this method is not suitable for killing insects in oil paintings. Wooden equipment cannot be frozen for insecticidal purposes, as low temperatures can cause animal glue to become brittle. If the materials in the collection are brittle or fragile, it may not be advisable to choose frozen insecticides. Due to the fact that leather is not suitable for freezing, books with leather covers should not be frozen for insect control. Therefore, before using low-temperature freezing insecticidal methods, it is necessary to first understand the material and type of the book to ensure safe and effective handling.

Working principle of low-temperature freezing insecticide in ancient books

Using T.R.T insecticidal and disinfection technology, the archives are subjected to insecticidal and disinfection treatment using low-temperature and dry methods. Pests and fungi are one of the important causes of archive damage, and temperature and humidity are the two basic factors that pests and fungi rely on for survival. Suitable temperature and humidity for rapid growth, development, and reproduction. On the contrary, it inhibits growth and development, and even leads to death. Long term cessation of low-temperature cultivation reduces enzyme activity, terminates normal metabolic activity, and leads to death. When pests are in the lethal temperature zone, free water inside the cells overflows into the intercellular space and freezes. As the ice crystals continue to expand, the cell membrane is mechanically damaged, and the protoplasm is dehydrated and concentrated, resulting in solidification. This solidification is irreversible, leading to the death of pests.

Function of low-temperature freezing insecticidal disinfection room for ancient books

1. Low temperature function: It can lower the temperature of the low-temperature freezer to below -35 ℃ within 120 minutes, from room temperature to -35 ℃, and maintain it at -35 ℃ for 48 hours before returning to room temperature.

2. Heating function: It has the function of regulating the slow heating of insecticide and disinfection.

3. Drying function: It has the function of eliminating water vapor in the air and maintaining the dryness of the archives (starting dehumidification when the machine is stopped and the temperature is returned to 0 ℃, and the dehumidification temperature is raised to room temperature. The humidity in the warehouse is between 45% and 65%).

4. Insecticidal function: It can completely kill pests (adults, larvae, eggs, pupae) in the archives, with a killing rate of 100%.

5. Disinfection function: It can kill microorganisms in the archives.

6. Protection function: During the process of insecticide disinfection, protect the archives from any physical and chemical damage.

7. Moisture protection function: It has drying and moisture protection functions, and can kill insects at low temperatures without being damp or dripping water.

8. Control function: Fully automatic control, with strong, standard, fast and other insecticidal mode selection, one click operation, unmanned management.

9. Monitoring function (optional): It has remote communication function, can monitor from different places, display the working status and historical records of the insecticide disinfection room at regular intervals, and can realize email and SMS alarm functions. It has a USB interface, can connect to external devices, display generated or printed data records, output lines or charts.

10. Historical data recording and saving function: The operating parameters of the equipment can be exported through a USB flash drive for easy understanding and mastery of the equipment's operating status, providing a basis for maintenance and upkeep of the equipment.

11. Remote control function: The on-site equipment can be operated through the mobile APP software (in any area of the network), and the parameter screen is consistent with the touch screen. Optional

Requirements for Low Temperature Freezing Insecticidal Disinfection Room System in Ancient Books

1. Permission management: The control system should set up two levels: operator and user. Logging into the system at different levels will result in different corresponding operation permissions. After saving the set and verified parameters, they will not be lost even if the PLC is powered off for a long time.

2. System monitoring: During the operation of the unit, relevant real-time data will be displayed on the monitoring main screen for easy viewing. Real time control of the unit can also be carried out according to its requirements.

3. Alarm record: When the system malfunctions, the control system will display the cause of the fault and display and store it in the alarm record screen.

4. System settings: including system configuration settings, system parameter settings, alarm parameter settings, and verification parameter settings. The setting parameters can be changed according to actual needs to meet practical requirements.

5. Equipped with automatic and manual operation modes: the two states can operate independently or switch between each other without disturbance.

Technical Specifications Table

Using T.R.T insecticidal and disinfection technology, the archives are subjected to insecticidal and disinfection treatment using low-temperature and dry methods. Pests and fungi are one of the important causes of archive damage, and temperature and humidity are the two basic factors that pests and fungi rely on for survival. Suitable temperature and humidity for rapid growth, development, and reproduction. On the contrary, it inhibits growth and development, and even leads to death. Long term cessation of low-temperature cultivation reduces enzyme activity, terminates normal metabolic activity, and leads to death. When pests are in the lethal temperature zone, free water inside the cells overflows into the intercellular space and freezes. As the ice crystals continue to expand, the cell membrane is mechanically damaged, and the protoplasm is dehydrated and concentrated, resulting in solidification. This solidification is irreversible, leading to the death of pests.

The low-temperature freezing insecticidal disinfection room for ancient books is mainly used in the following fields:

1、 Library and Archives

1. Preservation of Ancient Books: Low temperature freezing and insecticidal disinfection is an effective means of protecting precious ancient literature. By lowering the temperature to the lethal range of pests and maintaining it for a certain period of time, it is possible to completely kill pests and their eggs in ancient books, preventing further damage to the books by pests.

3. Archive preservation: Archive materials are also susceptible to pest infestation. The low-temperature freezing insecticidal disinfection room can provide a safe storage environment for archives, by killing pests and extending the storage time of archives.

2、 Cultural and museum industry

1. Cultural relic preservation: Many cultural relics, such as fabrics, paintings, and calligraphy, are also vulnerable to pest threats. The low-temperature freezing insecticidal disinfection room can provide an effective means of protection for these cultural relics, ensuring their integrity and safety.

2. Exhibition preparation: Before the cultural relics exhibition, low-temperature freezing and insecticide disinfection treatment can ensure that the cultural relics are not affected by pests during the exhibition period, improving the quality of the exhibition and the viewing experience of the audience.

3、 Other application areas

1. Book publishing industry: In the process of book publishing, a low-temperature freezing insecticide disinfection room can provide a safe storage environment for precious manuscripts and proofs, preventing insect damage to the content of books.

2. Private collectors: For private collectors who possess precious ancient books and cultural relics, low-temperature freezing insecticidal disinfection rooms are also an important means of protection. By regular processing, the integrity and value of the collection can be ensured.

In summary, the low-temperature freezing insecticidal disinfection room for ancient books has a wide range of applications in libraries and archives, cultural and museum industries, and other related fields. It can not only effectively kill pests, protect the integrity of ancient books and cultural relics, but also provide a safe environment for the preservation of various precious materials.

Model: DCDWLD-L1.5

Brand: Dachang

Size: 1.50 cubic meters

Dimensions: Length 1930mm * Width 950mm * Height 1800mm

Internal dimensions: length 1180mm * width 800mm * height 1600mm

Archive box size: 312-320cm

Voltage: 220V/50Hz

Power: 3kw

Temperature: -10~-40 ℃

Material: Stainless steel polyurethane foam material

Manufacturer: Ganzhou Dachang Air Conditioning Equipment Engineering Co., Ltd

Shipment date: June 23, 2020

Transportation method: Freight logistics