Mechanical seal for agitated reactor stirring shaft

Abstract

The invention discloses a mechanical seal for an agitated reactor stirring shaft, which comprises a mating ring adapter, a mating ring, a moving ring, a driving ring, a driving screw, a driving pin, a moving ring adapter which is connected with a stirring shaft and a plurality of springs which are uniformly circumferentially arranged on the moving ring adapter, the driving ring is sleeved on the moving ring adapter, the driving screw is inserted in a through hole of the moving ring adapter in a sliding manner, the lower end of the driving screw is connected with the driving ring, the springs support between the moving ring adapter and the driving ring, the upper end of the moving ring is attached to the driving ring, the upper end of the driving pin is connected with the moving ring adapter and the lower end of the driving pin is arranged in a pin groove of the moving ring, the mating ring adapter is sleeved on the mating ring, the lower end surface of the moving ring is provided with a circular groove, the height of the inner wall of the circular groove relative to the groove bottom is greater than that of the outer wall relative to the groove bottom, a plurality of grooves are uniformly circumferentially arranged on the outer wall of the annular groove., and the lower end of the inner wall of the annular groove is attached with the upper end of the mating ring. The invention has a self-cooling function, and is cooled by using a cooling liquid without arrangement of a cooling liquid tank, thereby greatly reducing volume, preventing raw materials in an agitated reactor from being polluted, being simple in disassembly and assembly and being convenient for replacement.

Description

technical field [0001] The invention relates to a mechanical seal, in particular to a mechanical seal for a stirring shaft of a reactor. Background technique [0002] Conventional mechanical seals for stirring shafts of reactors must be equipped with cooling liquid tanks outside the moving ring and the static ring, and the sealing end surface between the moving ring and the static ring must be located below the liquid level of the cooling liquid in the cooling liquid tank in order to function properly. To the cooling effect on the sealing end face. The mechanical seal for the stirring shaft of the reactor with the above structure still has the following three disadvantages in the actual use process: 1. Since the mechanical seal for the stirring shaft of the reactor in the prior art is provided with a cooling liquid tank outside the moving ring and the static ring, As a result, the volume of the entire mechanical seal is larger, which inevitably requires a larger installatio...

AI Technical Summary

Problems solved by technology

The mechanical seal for the stirring shaft of the reactor with the above structure still has the following three disadvantages in the actual use process: 1. Since the mechanical seal for the stirring shaft of the reactor in the prior art is provided with a cooling liquid tank outside the moving ring and the static ring, As a result, the volume of the entire mechanical seal is larger, which inevitably requires a larger installation space; 2. During long-term use, as the sealing ring in the mechanical seal gradually ages, the sealing performance of the sealing ring will be greatly reduced. , the coolant located in the coolant tank may leak and penetrate into the reactor along with the gap between the parts in the mechanical seal, so that the materials in the reactor are easily polluted and scrapped, resulting in unnecessary 3. When the mechanical seal is damaged and needs to be replaced, the staff needs to drain the coolant in the coolant tank before removing the damaged mechanical seal, then install a new mechanical seal, and finally add the Coolant, so it is very troublesome to disassemble, which greatly increases the difficulty of replacing the mechanical seal

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