Self-circulation cooling mechanism for automobile water pump seal

Abstract

The invention discloses a self-circulation cooling mechanism for an automobile water pump seal, which comprises a water pump housing, an impeller and a water seal, wherein the water seal is arranged in the water pump housing; an annular boss is arranged at the upper end of the water pump housing and provided with a drainage hole; cooling water channels are arranged on the impeller; according to a principle of different positions and different pressures in a water pump, the cooling mechanism solves the problem that the water seal is lack of water due to centrifugation according to a principle of different positions and different pressures in a water pump; an internal circulation in the water pump is realized; and the cooling mechanism is simple in structure and low in cost, prevents the water seal from dry grinding, prolongs the service life of the water seal, further prolongs the service life of the water pump, solves the long-term technical problem of water pump failure due to the dry grinding of the water seal, exerts a practical value of the cooling mechanism to the greatest extent under the same resource condition, and is worthy of popularization and application.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and in particular relates to a self-circulating auto water pump water seal cooling mechanism. Background technique [0002] When the automobile water pump is used, in order to ensure the normal operation of the water pump, a sealing device, that is, a water seal, is installed at the connection between the water pump casing and the engine, and moves together with the supporting bearing to ensure the normal operation of the water pump. There is also a drain hole on the water pump casing , located between the water seal and the bearing; once the coolant leaks through the water seal, it can be released from the drain hole to prevent the bearing lubrication from being damaged due to the coolant entering the bearing cavity and damage to the components, which will affect the normal operation of the water pump and make the water pump Ineffective soon; In CN 102352861 A, a kind of anti-dry wear aut...

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Problems solved by technology

However, when the impeller of the water pump rotates at high speed, the function of the diversion groove is that in practical applications, due to centrifugal force, the amount of water reaching the water seal is very small, and the cooling effect it plays is not good, and it is easy to cause the water seal to dry and grind to failure. ;In actual operation, there is also a method of adding a drainage device to cool the water seal, but its production cost is high and the mechanism is complicated, so a simple structure, good effect of preventing water seal dry grinding, low cost, and prolonging the life of the water pump are needed. Self-circulating automobile water pump water seal cooling mechanism

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