The principle of the smoke machine, the structure of the thermal smoke machine

Smoke machine, also known as hot fog machine, smoke cannon machine, spraying machine, belongs to plant protection sanitizing machinery, it is the use of pulse jet engine working principle design and manufacture for insecticide, disinfection and sterilization or fertilization spraying machinery.

Summary. A thermal fog machine usually consists of the following parts: Chassis:

The casing of the thermal fog machine, usually made of metal or plastic material, has good heat dissipation performance and waterproof performance. Heating element: The core component of the thermal fog machine, usually heated by a heating tube or heater, heats the atomized liquid to the boiling point, and produces a large amount of thermal steam.

Smoke outlet: The thermal vapor produced by the thermal fog machine is ejected through the smoke outlet, forming a dense smoke.

The thermal fog machine is usually composed of the following parts: Case: The shell of the thermal fog machine, usually made of metal or plastic materials, has good heat dissipation performance and waterproof performance.

Heating element: The core component of the thermal celebration preparation fog machine, usually heated by a heating tube or heater, heats the atomized liquid to the boiling point, and produces a large amount of thermal steam. Smoke Exit:

The thermal steam generated by the thermal fog machine is sprayed through the smoke outlet to form a dense smoke.

Control system: The control system of the thermal fog machine usually includes circuit boards, power supplies, buttons, LED indicators and other parts, which are used to control the working status of the heating element and the switch of the smoke outlet. Liquid Storage Tanks:

The liquid storage tank of a thermal fog machine is used to store the liquid smoke and is usually located at the bottom of the case and can be removed and replaced. In general, the structure of the thermal fog machine is relatively simple, but the quality of the heating element and the different heating methods will directly affect the performance and effect of the smoke machine.

A fog machine (Figure 8-49) is a machine that can produce smoke and is a pesticide applicator for smoke loading technology. Smoke drug delivery technology is an effective and fast prevention and control method for flying, reptile and disinfection. It atomizes the agent into smoke through the smoke generating device, the diameter of this smoke droplet is generally less than 50 m, very fine, can be filled in a certain space, can be suspended in the air for a long time, diffuses very evenly into the control space, can penetrate into the gap that the general spray droplets or powder particles can not reach, and eliminate pests and diseases through contact killing and fumigation.

The smoke loading technology is used to control pests and diseases, with high efficacy, economical medication and convenient use.

Figure 8-49 Fog machine.

Smoke machines used in lawn pest control generally use hot smoke machines. The hot fog machine uses the heat energy of the high-temperature gas and the kinetic energy of the high-speed gas generated by combustion to make the agent quickly crack and volatilize when heated, atomize into fine droplets, and penetrate into the lawn with the natural air flow. There are three main types of thermal fog engines: exhaust gas heating type, electric heating type and pulse jet engine heating type.

Among them, the pulse jet engine heating type is widely used. The basic principle of pulse fog machine: the fuel is atomized and mixed with air to form a combustible mixture, and the combustible mixture entering the combustion chamber is ignited and burned to form a high-temperature and high-pressure gas.

This gas is injected out of the tube at high speed to form the ** process. Under the action of the gas wave reflection generated during combustion, the combustion chamber generates negative pressure, inhales the combustible mixture, ignites and burns again, and repeats. The liquid is sent into the tail jet pipe, and is discharged with high temperature and high speed exhaust gas, and at the same time, the hot cracking volatilizes into a smoke-like form.

Fog machine, also known as smoke spraying machine and spraying machine, belongs to portable agricultural machinery. Smoke machines are divided into trigger smoke machines, thermal smoke machines, pulse smoke machines, gas smoke machines, fuel smoke machines, etc.

Through the gravitational action of the fan, the welding fume exhaust gas is sucked into the air inlet of the equipment through the universal dust collection hood, the air inlet of the equipment is equipped with a flame arrester, the spark is blocked by the flame arrester, the smoke and dust gas enters the settling chamber, and the coarse dust is directly reduced to the ash hopper by gravity and upward airflow, and the particulate smoke is captured on the outer surface by the filter element, and the clean gas is filtered and purified by the filter element, and flows into the clean room from the center of the filter element, and the clean air is further purified by the activated carbon filter adsorption, and then discharged through the air outlet up to the standard.

The smoke sensor has a radioactive source americium-241 in the inner and outer ionization chambers, and the positive and negative ions produced by ionization move to the positive and negative electrodes respectively under the action of the electric field. Under normal conditions, the current and voltage of the inner and outer ionization chambers are stable. Once there is smoke escaping the ionization chamber.

Interfere with the normal movement of charged particles, the current and voltage will change, and the balance between the internal and external ionization chambers will be destroyed.