Positive pressure air seal machine and rice hull conveying device

Abstract

The invention belongs to the field of pneumatic transmission equipment, and in particular relates to a positive pressure air seal machine and a rice hull conveying device. The positive pressure air seal machine comprises an air seal machine main body which comprises a shell, an inlet end and an outlet end formed in two ends of the shell and fan blades arranged in the shell. The air seal machine main body is characterized in that elastic sealing parts which reduce air leakage are arranged on the fan blades, an air eliminating part is arranged in the inlet end, the outer wall of the air eliminating part and the inner wall of the inlet end form an air eliminating channel, and returned air, penetrating the fan blades, of the outlet end is guided to the air eliminating channel to be eliminated.By arranging the elastic sealing parts, the gap between the fan blades and the inner-ring-shaped inner wall of the shell is reduced, and meanwhile, the rotating smoothness of the fan blades is ensured, so that the air leakage phenomenon of the air seal machine is reduced greatly; by arranging the air eliminating part, leaked air of the air seal machine is guided to the air eliminating channel tobe eliminated, so that a phenomenon of difficult emptying due to air leakage is avoided; and by arranging an air return sleeve and an air return pipe, an air eliminating circulating system is formed,so that the energy waste is reduced and the efficiency is improved.

Description

technical field [0001] The invention belongs to the field of pneumatic conveying equipment, and in particular relates to a positive pressure air lock and a rice husk conveying device. Background technique [0002] The air shutoff device is also called unloading valve, ash unloading valve and star unloading device. The air shutoff device is an important device in the pneumatic conveying and ventilation dust removal network. Its main function is to continuously and timely discharge the materials in the unloader or dust collector, and at the same time ensure that the internal pressure of the equipment is not exposed to the normal pressure environment. [0003] At present, positive pressure air locks often have difficulty in unloading. Among them, the reason for the difficulty in unloading is very likely to be the gap between the impeller and the housing of the air lock, that is, air leakage. Part of the positive pressure generated by the positive pressure blowing device flows ...

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Problems solved by technology

[0003] At present, positive pressure air locks often have difficulty in unloading. Among them, the reason for the difficulty in unloading is very likely to be the gap between the impeller and the housing of the air lock, that is, air leakage.

Part of the positive pressure generated by the positive pressure blowing device flows back from the bottom of the air lock, making it difficult for the material to fall; and the gap between the impeller of the air lock and the shell is largely due to the working mechanism of the air lock, the impeller of the air lock It is necessary to maintain a certain degree of airtightness and relative rotation with the shell, so it is difficult to avoid a little gap. At the same time, the quality of the air lock and the length of use are also important reasons for the gap. Therefore, the closed The air leakage problem of the fan is difficult to eliminate from the original, and the current solution to the excessive gap between the impeller and the housing is to replace the fan, which greatly consumes manpower and financial resources

[0004] In the rice husk conveying equipment, the air locker is often used for unloading, and the rice husk is conveyed in this way. Generally, the outlet of the air locker is connected with the conveying pipe with positive pressure, and the rice husk falls from the air locker to the conveying pipe. The feeding pipe is equipped with a positive pressure feeding pipe and then the chaff is conveyed to the designated position by pneumatic force, and the unloading is carried out with an air lock, which will more or less cause air leakage, resulting in low unloading efficiency and even difficult unloading Case

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