Oldham Sealed Couplings

Abstract

The invention belongs to the mechanical sealing devices, and in particular relates to a crosshead shoe sealing shaft coupler, wherein a static sealing flange (3) is fixedly arranged in the center hole in the left end of a shell (1) through a connecting bolt (12); an overturning shaft (2) is movably arranged in the static sealing flange (3) in a penetration manner; a flange bearing seat (10) is fixedly arranged in the center hole in the right end of the shell (1) through a connecting bolt (12); a swing rod connecting shaft (11) is arranged in the flange bearing seat (10) and a bearing (9) in the penetration manner; the overturning shaft (2) is connected with the swing rod connecting shaft (11) through a crosshead shaft coupling slider (6); the crosshead shaft coupling slider (6) is a stepped cylinder in shape; a static sealing ring (4) is arranged in the circular groove in the right end surface of the static sealing flange (3); a moving sealing ring (5) is arranged in the circular groove in the left end surface of the crosshead shaft coupling slider (6); the static sealing ring (4) and the moving sealing ring (5) both sleeve the overturning shaft (2). The crosshead shoe sealing shaft coupler has the advantages of simple structure and capabilities of purifying the production environment and prolonging the service life of equipment.

Description

technical field [0001] The invention belongs to a mechanical sealing device, in particular to an Oldham seal coupling. Background technique [0002] Over the years, the sealing of the flap damper of the dust and polluted gas conveying devices in the production industries such as electric power, building materials, and smelting has unsolvable disadvantages, which has caused hidden dangers to safe production and caused serious pollution to the production environment. The existing sealing device of the flap damper is generally an axial seal of a through shaft, and its structure is relatively simple, and a through shaft is used to connect the turning device, the control device and the sealing device. During use, the turning device needs to control the flow rate of the medium at any time. The function of the wind pressure is to spray the medium to the designated position. Since the bearing end cannot bear the wind pressure, the medium penetrates into the sealing device through th...

AI Technical Summary

Problems solved by technology

During use, the turning device needs to control the flow rate of the medium at any time. The function of the wind pressure is to spray the medium to the designated position. Since the bearing end cannot withstand the wind pressure, the medium penetrates into the sealing device through the through shaft, and the sealing device in the sealing device The medium wears the through shaft and sealing material in the middle for a long time, resulting in a gap between the sealing material and the through shaft. When the gap reaches the position of the sealing flange of the control device, due to the effect of dust wind pressure, the medium is directly sprayed to the outside of the equipment through the gap. Affects both safe production and the production environment

Moreover, the disadvantage of the existing equipment is that after the sealing device has been used for a period of time, because the worn part cannot be compensated, defects such as medium leakage and pressure loss occur, which greatly reduces the service life of the sealing device of the flap damper

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