33results about How to "Uniform drying quality" patented technology

The invention discloses a vacuum drying machine with a cooling section. The vacuum drying machine is composed of a drying bin with the cooling section, a hopper, a discharge device, an elbow, a gas guide pipe, a support, a vacuum unit, a heating device, a driving device and rails. The drying bin with the cooling section is composed of a shell, an inner bin, a heat conduction medium and a safety valve. The support supports a feed port and a discharge port of the two ends of the inner bin. The vacuum unit sucks gas in a bin body of the inner bin through a gas guide pipe. In the material drying process, the drying bin with the cooling section can be rotated on the support through the driving device, cooling vertical pipes arrayed spirally have functions of stirring and propelling materials, no dead corners exist during material drying, materials are not prone to caking when dried in the drying section of the inner bin, material drying time is shortened, material drying quality is uniform, dried materials are cooled in the cooling section, material drying efficiency is improved, the material drying effect is optimized, and green, energy-saving and environment-friendly drying is achieved.

A three-dimensional heating type double-cone vacuum dryer of the present invention is composed of a three-dimensional heating type vacuum drying chamber, a support, a vacuum unit, and a driving device. The two ends of the three-dimensional heating vacuum drying chamber are installed on the support, and the driving device is installed on the support. The driving device is used to drive the rotation of the three-dimensional heating vacuum drying chamber. The exhaust port of the three-dimensional heating vacuum drying chamber is connected to the vacuum unit. In the case of the same size space, the three-dimensional heating type double-cone vacuum dryer can dissipate heat for the three-dimensional heat dissipation and heating of the inner wall of the drying chamber. The heat dissipation area is increased by 8‑60 times, and the heat conduction and heat dissipation speed is improved. Improvement; the cooling pipe has a stirring function, and the wet material is not easy to agglomerate, so that the drying quality of the product is uniform, the drying efficiency is improved and the drying effect is optimized.

The invention discloses a vacuum dryer. The vacuum dryer comprises a drying storehouse, a heat transfer device, grain discharge devices, a bracket, a lifting device, a valve, a feed hopper, an outlethopper, a sealing device, an online moisture test device, a vacuum set, a heating device, a gas guide tube, a heat conduction tube, a heat conduction medium and a thermal insulation layer, wherein thevacuum set is connected with an air exhaust port in the drying storehouse through the heat conduction tube; the valve is used for controlling the entry and exit of materials in the drying storehouse;the heat transfer device is connected with the heating device through the heat conduction tube; the drying storehouse is internally provided with 1-5 sets of grain discharge devices, the online moisture test device is arranged in the drying storehouse; the heat conduction medium carrying thermal energy directly performs heating and heat conducting on the materials through a heat pipe of the heattransfer device, the thermal conversion efficiency is high, loss is small, and the heat conduction and heat transfer speed is improved; waste-heat utilization can be carried out on the heat energy released by the condensable gas in the moisture in the condensation process of a condenser; the lifting device dries the materials circularly and drily; each grain discharge device has a stirring function, so that the drying quality of the materials is even, thereby improving the drying efficiency of the materials and optimizing the drying effect of the materials.

The invention discloses a thermal tube type vacuum drier capable of utilizing afterheat. The thermal tube type vacuum drier consists of a thermal tube drying cabin capable of utilizing afterheat, an air guide pipe, a bracket, a vacuum unit, a heating device, a driving device, rails and a vacuum charging and discharging device, wherein the rail on the thermal tube drying cabin capable of utilizing afterheat is mounted on the bracket; the driving device is used for driving the rail on an inner cabin; one end of the air guide pipe is connected to the vacuum unit after passing through the vacuum charging and discharging device; the other end of the air guide pipe is connected to the inside of the inner cabin; the inner cabin of the drying cabin adopts three-dimensional heat conduction by a cabin body and a cooling vertical tube, so the heat conduction speed and the heat exchange speed are increased; a cooling tube and a helical blade have a stirring function; no dead corner exists in material drying; the material drying time is shortened, so that the material can be dried uniformly; the material drying efficiency is improved; the material drying effect is optimized; the material can be cooled during a vacuum drying process; heat energy released in cooling of the material is also utilized, so continuous vacuum material drying can be realized.

The invention discloses a vacuum low-temperature grain drying machine. The vacuum low-temperature grain drying machine is composed of a heat-pipe drying bin, a support, a condenser, a vacuum pump, a heating device, a drive device and a gas guide pipe. The two ends of the heat-pipe drying bin are installed on the support, and the appearance shape of the heat-pipe drying bin is a cylinder. A heat energy inlet and a heat energy outlet of the heat-pipe drying bin are connected to the heating device through the gas guide pipe; and a gas exhaust port of the heat-pipe drying bin is connected to the condenser and the vacuum pump through the gas guide pipe, and a gas pressure in the heat-pipe drying bin achieves a vacuum degree of -0.094Mpa to -0.098Mpa. The inner wall of the drying bin is used for three-dimensional heat dissipation, and the heat dissipation area is increased by 5-30 times, so that a heat conduction and dissipation speed is increased, a grain drying time is shortened, continuous grain stirring can be realized, the grain drying efficiency is increased and the grain drying effect is optimized; and the effects of waste heat utilization, energy conservation and emission reduction are achieved.

The invention relates to a drum vacuum dryer, which comprises a drum drying container, a discharge device, a vacuum unit, an elbow, a bracket, a support wheel bracket, a guide pipe, a gear ring, a driving device, a sealing device and a hopper; the drum drying container includes a heating container, a cooling container, a preheating container, a drying container, a sealing device and a heat conducting medium. The material inlet and outlet of the elbow and the drying container are connected by the dynamic seal fixed by the sealing device. One end of the discharge device is fixedly connected to the flange of the elbow, and the other end of the discharge device is provided with the hopper. One end of the guide pipe is connected to the vacuum unit and the other end extends through the elbow tothe inside of the drying container. The gear ring drives the drying container to rotate on the bracket of the support wheel bracket. The heat energy heats and conducts the material through the heat conducting medium, the heat conversion has the advantages of high efficiency and small loss, thereby improving the material drying speed. After drying, the material is cooled in the cooling section, andthe heat energy released when the material is cooled is capable of being re-utilized. When a heat pipe is damaged and leakage occurs, the use of the whole drum vacuum dryer with cooling section wouldnot be affected.

The invention discloses a vacuum drying machine with a cooling section. The vacuum drying machine is composed of a drying bin with the cooling section, a hopper, a discharge device, an elbow, a gas guide pipe, a support, a vacuum unit, a heating device, a driving device and rails. The drying bin with the cooling section is composed of a shell, an inner bin, a heat conduction medium and a safety valve. The support supports a feed port and a discharge port of the two ends of the inner bin. The vacuum unit sucks gas in a bin body of the inner bin through a gas guide pipe. In the material drying process, the drying bin with the cooling section can be rotated on the support through the driving device, cooling vertical pipes arrayed spirally have functions of stirring and propelling materials, no dead corners exist during material drying, materials are not prone to caking when dried in the drying section of the inner bin, material drying time is shortened, material drying quality is uniform, dried materials are cooled in the cooling section, material drying efficiency is improved, the material drying effect is optimized, and green, energy-saving and environment-friendly drying is achieved.

A heat pipe type three-cylinder drying machine comprises a heat pipe three-cylinder drying bin, roller paths, a gear ring, a three-way connector device, a discharging device, an exhaust device, a support, riding wheels and a driving device. The heat pipe three-cylinder drying bin comprises heating devices, a three-cylinder drying bin body and spiral blades. Heat energy carried by a medium carriesout heat conduction and heating on materials in the three-cylinder drying bin body through heat conduction pipes and heating pipes of the heating devices; heaters with heating strips conduct heat energy to a heat conduction working medium, the heat conduction working medium carries out heat conduction and heat exchange of liquid-vapor phase change in inner cavities of the pipes, and the heat energy is conducted to materials in a roller through the heating pipes for heat conduction and heating; and when a certain heating pipe is damaged to cause leakage, use of the whole three-cylinder drying bin body is not influenced. When the heating devices in the three-cylinder drying bin body carry out heat conduction and heating on the materials, the effect of stirring the materials during material drying work is achieved, the drying quality of the materials in the three-cylinder drying bin body is uniform, the material drying efficiency is improved, and the material drying effect is optimized.