Vacuum impregnation technology

In the textile industry, the operation method is basically the same as the traditional wet impregnation, but the porous materials need to be vacuumed first and then involved in the impregnation solution. Vacuum can remove the gas and water adsorbed in the porous material pore, which is conducive to the metal ions that need to be impregnated into the pore. Especially for the microporous molecular sieve, the final material obtained by vacuum impregnation is more uniform and easier to enter the pore than the traditional wet impregnation.

In the laboratory of the school, the purpose of vacuum immersion technology is to improve the application degree of osteodystrophy bone specimen, prolong the service life of bone specimen, and avoid the disadvantages of traditional water paint painting maintenance. Methods the monotonous bone specimens were immersed in hz-806a / hz-806b two-component epoxy drop adhesive working solution in vacuum, and then soaked in glycerin ethanol maintenance solution for preliminary solidification, and then after deglyceridation, air dried and cured to obtain waste products. Finally, the improvement of bone density and cancellous bone was evaluated comprehensively from the aspects of appearance, anatomical characteristics and physical properties. Results after treatment, a smooth thin paint film was formed on the surface of the bone specimen, and the internal space of the cancellous bone was solidified and filled with epoxy drop glue. The hardness, toughness, safety and color of the bone specimen were greatly improved, and the average weight gain rate was 80.3%. Conclusion vacuum impregnation technique is effective in the maintenance of bone specimens, especially for the maintenance of osteodystrophy specimens. It can be used as a new technique for bone specimen maintenance.

In the ceramic industry, 10wt% NiO is introduced into the tubular porous (1 ~ 2 μ m) ceramic carrier by impregnation method. Want to use the method of dipping nitrate solution. The ordinary wet impregnation has a low efficiency and has to be repeated many times before reaching the impregnation amount. Therefore, we originally wanted to use vacuum impregnation, but there is no professional vacuum impregnation equipment in the laboratory. However, there is a vacuum pump. We don’t know whether the effect of vacuum impregnation is achieved by putting the impregnation solution and carrier into the beaker, and then putting the beaker into the vacuum pump and then vacuuming?

Vacuum impregnation in food industry refers to the process that food is directly placed in the dipping solution of container. After a long time of impregnation under vacuum and normal temperature, the impregnation liquid can slowly penetrate into the food and complete the process of taste. It is often used in the processing of fungus food. Compared with room temperature impregnation, it has a shorter time and more flavor effect.

Most of the vacuum impregnation equipment in the prior art includes the impregnation tank, the air exhausting device, the feeding device and the discharging device. After the materials are placed in the impregnation cage, they are placed in the impregnation tank as a whole. After vacuumizing, the impregnating material is discharged and the impregnation cage is put forward.

In the long-term working process, the staff found that the existing technology has the problem of uneven taste of materials. As for food, there are often dead points in the middle of the stacking of raw materials that are difficult to be touched by the impregnant material, and the problem that waste products do not taste will appear at these dead points.

In order to solve the problem that the waste products in the prior art can not taste evenly and the quality control is poor. A new type of vacuum impregnation equipment is proposed. A vacuum impregnation equipment includes a sealing cover sealed with the impregnation tank, a vacuum pumping device is arranged on the impregnation tank, a liquid inlet pipe connecting the impregnation tank is arranged at the side of the impregnation tank, the impregnation cage is arranged in the impregnation tank, and the stirring device is also arranged on the sealing cover. The mixing device includes the agitator connected with the mixing motor and the stirring paddle In the impregnation tank and above the impregnation cage, the top of the agitator connects with the output shaft of the mixing motor, the main shaft of the agitator is provided with a through-hole, and a hollow sleeve is arranged above the sealing cover and outside the main shaft of the agitator. A liquid containing cavity is arranged between the sleeve and the main shaft of the agitator, and a through-hole is arranged in the corresponding liquid containing cavity on the main shaft of the agitator The bottom of the impregnation tank is connected, and a liquid pump is arranged on the return pipeline.