4results about How to "Avoid over-drying" patented technology

This utility model relates to the field of drying equipment and provides a hot air drying device for dehydrated vegetables. It includes an outer cylinder and an inner cylinder installed inside the outer cylinder, both with openings at the top. The bottom and sides of the outer cylinder have air inlets and outlets, respectively. A fan structure is installed at the bottom of the inner cylinder. A circulation chamber is provided between the outer and inner cylinders. A first heating grid is located between the inner bottom of the outer cylinder and the inner cylinder, and a second heating grid is located between the inner top of the outer cylinder and the inner cylinder. The top of the outer cylinder has a removable cover, and the bottom of the cover has several trays at different heights. This device effectively solves the problem of uneven hot air distribution in existing drying equipment. The synergistic effect of the inner and outer cylinders ensures that the hot air is evenly distributed within the inner cylinder, avoiding over-drying and scorching of vegetables due to excessively high local temperatures. This not only significantly improves the quality of the dehydrated vegetables but also greatly shortens the drying time and increases drying efficiency.

The utility model provides a drying room for steel plate pretreatment. The drying room comprises a drying room body, a conveying assembly is installed in the drying room body, a drying mechanism is arranged in the drying room body, a fan is fixedly installed at the top of the drying room body, and an air outlet is fixedly formed in the position, located on the upper side of the fan, of the upper surface of the drying room body. Through use of the drying mechanism, two fixed boxes and an exhaust fan on the upper side convey hot air to the upper side and the lower side of the conveying assembly through exhaust pipes correspondingly, and a plurality of exhaust ports are evenly formed in the exhaust pipes, so that the hot air can evenly cover the surface of a steel plate in an omnibearing mode, and excessive drying caused by hot air concentration in partial areas is avoided; and drying is not thorough due to insufficient hot air in other areas. And the consistent drying degree of the surface of the steel plate is ensured, the probability that the steel plate deforms, cracks and the like due to non-uniform drying is effectively reduced, and therefore the overall quality and efficiency of steel plate pretreatment are improved.

This utility model proposes an integrated washing, moistening, and drying device for traditional Chinese medicine decoction pieces, including a chassis placed on a pressure-sensitive support column. Several heating tubes are connected between the two inner side walls of the chassis, and a filter cylinder is positioned above the heating tubes. Both ends of the filter cylinder are rotatably connected to the inner side walls of the chassis. The first end of the filter cylinder is connected to the output shaft of a drive motor, which is mounted on the outer side wall of the chassis. A spray cylinder is inserted into a through-hole at the tail end of the filter cylinder, with its first end extending out of the outer side wall of the chassis. The inlet of the first end of the spray cylinder is connected to an upper manifold via a telescopic pipe A, with an air inlet mechanism and a water inlet mechanism connected to its two ends respectively. The spray cylinder in this device can sequentially spray clean water and blow air into the rotating filter cylinder, thereby washing and drying the medicinal materials in the filter cylinder. The quality of the medicinal materials before washing and after drying is monitored by the pressure-sensitive support column, effectively preventing over-drying and exhibiting intelligent and efficient characteristics.

The utility model belongs to the technical field of waste gas preheating recycling, and particularly relates to a waste gas waste heat recycling device which comprises a barrel with a stirring assembly inside, a feeding channel and a discharging channel are arranged at the two ends of the barrel respectively, a waste gas channel is spliced to the outer side of the barrel through a cover body, and the stirring assembly is arranged in the barrel. The two ends of the cover body are connected with a gas inlet pipe and a gas outlet pipe which are communicated with the waste gas channel respectively, the barrel body comprises a first barrel body and a second barrel body, the gas inlet pipes of the first barrel body and the second barrel body are connected through a gas inlet header pipe, and the gas inlet header pipe is connected with the gas outlet header pipe. Humidity sensors are installed in the first barrel and the second barrel, and when the humidity sensor in any barrel detects that the humidity in the barrel is reduced to a preset threshold value, the controller closes the adjusting valve of the air inlet pipe corresponding to the barrel and synchronously opens the adjusting valve of the other barrel, so that uninterrupted heat exchange is achieved.