What is a compressed heat dryer? How to debug it?

　　What is a compressed heat dryer? What are the advantages of a compressed heat dryer? Let's take a brief look.

1. Carefully designed adsorption tower. 2. High-performance activated alumina adsorbent. 3. Effective silencer. 4. Pneumatic controller for inlet, high power, durable. 5. Regeneration gas regulating valve capable of precise flow adjustment.

　　What is the working principle of a compressed heat dryer? Let's take a brief look.

　　For example, drying wood before making wooden molds and wood products can prevent product deformation, and drying ceramic blanks before firing can prevent finished products from cracking. In addition, dried materials are also easier to transport and store, such as drying harvested grains to a certain water content to prevent mildew. As natural drying is increasingly unable to meet the needs of production development, various mechanized dryers are becoming more and more widely used.

　　The amount of water vapor in compressed air is determined by the temperature of the compressed air: lowering the temperature of the compressed air can reduce the water vapor content in the compressed air while keeping the compressed air pressure basically unchanged, and the excess water vapor will condense into liquid. Refrigerated dryers use this principle to dry compressed air through refrigeration technology. Therefore, a refrigerated dryer has a refrigeration system. The refrigeration system of the refrigerated dryer belongs to compression refrigeration, and consists of four basic components: a refrigeration compressor, a condenser, an evaporator, and an expansion valve. They are connected in sequence through pipelines to form a closed system. The refrigerant continuously circulates in the system, changing its state and exchanging heat with compressed air and cooling medium. Air dryers also include adsorption dryers and dissolution dryers.

　　The low-pressure (low-temperature) refrigerant in the compressor evaporator is sucked into the compressor cylinder, the refrigerant vapor is compressed, and the pressure and temperature rise simultaneously; the high-temperature refrigerant vapor is pressed into the condenser and exchanges heat with low-temperature cooling water or air. The heat of the refrigerant is taken away by water or air and condensed, the refrigerant vapor turns into liquid, and then is sent to the expansion valve to throttle into a low-temperature and low-pressure liquid, entering the evaporator; in the evaporator, the low-temperature and low-pressure refrigerant liquid absorbs the heat of the compressed air and vaporizes (commonly known as 'evaporation'), while the compressed air is cooled and condensed into a large amount of liquid water; the refrigerant vapor in the evaporator is drawn away by the compressor, causing the refrigerant to undergo four processes in the system: compression, condensation, throttling, and evaporation, thus completing a cycle.

　　The compressor of the compressed heat dryer is the heart, playing the role of inhaling, compressing, and conveying refrigerant vapor. The condenser is a device for dissipating heat, transferring the heat absorbed by the evaporator and the heat converted from the compressor input power to the cooling medium (such as water or air) to take away. The expansion valve/throttle valve can throttle and reduce the pressure of the refrigerant, control and regulate the amount of refrigerant liquid flowing into the evaporator, and divide the system into high-pressure and low-pressure sides.

　　Generally speaking, the debugging of a compressed heat dryer can be divided into idling test, load test, and precision test.

　　(1) Idling test: Check the installation accuracy, equipment stability, transmission, operation, control, lubrication, hydraulic system and other related parameters and performance of the equipment under repair to ensure that they are normal, sensitive, and reliable. In the absence of Beethoven's surgery. Idling for a certain period of time is an essential running-in step before putting new equipment into use.

(2) Equipment load test: Test the equipment under several standard load conditions. In some cases, during the load test, check the temperature rise of the bearings, whether the hydraulic system, transmission, operation, control, and safety devices meet the factory standards, and whether they are normal and safe and reliable. Debugging under different load conditions is also a necessary condition for the running-in of new equipment. The quality of the running-in test has a great impact on the service life of the equipment.

(3) Equipment precision test: Generally, it should be carried out according to the specifications after the load test. It is necessary to check the geometric accuracy of the equipment itself and the accuracy of the work (processing products). This test is mostly carried out two months after the equipment is put into use.