Diesel engine drain valve

Abstract

The invention discloses a water drain valve of a diesel engine. The water drain valve comprises a valve body, a guiding sleeve, a valve plate and a reset spring, wherein the valve body is a tubular body, the guiding sleeve is arranged at the tail end of the valve body, a guiding hole is arranged in the middle of the guiding sleeve, the valve plate is a cylindrical body which is provided with a guiding rod, and is arranged in the valve body, the valve plate and the guiding sleeve define a chamber in the middle of the valve body, the cylindrical body part of the valve plate is in seal fit with the inner side wall of the front end of the valve body to enable the valve to be in a closed state, the guiding rod penetrates through the guiding hole, when the valve plate moves towards the tail end direction of the valve body to pass through a guiding groove to enable the valve to be in an opened state, cooling water passes through the guiding groove to enter the chamber, and the reset spring is sleeved on the guiding rod and drives the valve plate to move towards the front end of the valve body to enable the cylindrical body part of the valve plate to be in seal fit with the inner side wall of the front end of the valve body. The water drain valve has a function of preventing frost cracking of parts of the diesel engine.

Description

technical field [0001] The invention relates to the field of diesel engine parts, in particular to a diesel engine drain valve. Background technique [0002] As we all know, when a diesel engine is working, a large amount of heat will be generated to cause a high temperature of the diesel engine body. Generally, a cooling water circulation system is installed on the diesel engine. Through the repeated circulation of the cooling water, the heat generated by the diesel engine is exchanged with the outside world through the cooling water. During the use of the current diesel engine, when the temperature is low, the water-cooled diesel engine cooled by soft water will expand due to the freezing of the cooling water, which will easily cause the components of the diesel engine cooling system to freeze and crack. Therefore, in a low temperature environment, After the diesel engine stops working, the drain valve must be opened to drain the cooling water in time. [0003] But, the d...

AI Technical Summary

Problems solved by technology

In the process of using the current diesel engine, when the temperature is low, the water-cooled diesel engine cooled by soft water will expand due to the freezing of the cooling water, which will easily cause the parts of the diesel engine cooling system to freeze and crack. Therefore, in the low temperature environment, After the diesel engine stops working, the drain valve must be opened to drain the cooling water in time

[0003] However, the water discharge valve adopted by the current diesel engine only has the function of discharging water, and it needs to be manually operated close to the water discharge valve of the diesel engine to discharge water.

The problem is that under low temperature conditions, after the diesel engine stops working, or because of negligence, or because it is not timely, the parts of the cooling system of the diesel engine will often freeze and crack, causing unnecessary losses

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