Differential pressure induction valve assembly

Abstract

The invention discloses a differential pressure induction valve assembly. The differential pressure induction valve assembly comprises an induction valve main cavity, wherein a main hole is formed in the induction valve main cavity, an oil inlet is formed in one end of the main hole, a valve block is arranged in the main hole, a mounting bin is arranged in the valve block, an ejector rod assembly is arranged in the mounting bin, a mounting nut is arranged at the end, away from the oil inlet, of the induction valve main cavity, a sealing assembly is arranged at the contact position of the mounting nut and a main induction valve body, an outer spring for supporting the mounting nut and the valve block is arranged in the main hole, an inner spring is arranged on the outer side of the ejector rod assembly, a mounting hole is formed in the mounting nut, and an alarm assembly is arranged in the mounting hole. The differential pressure induction valve assembly is ingenious in structural design, high in practicability, stable in working process, small in occupied space, convenient to mount, dismount and carry and capable of replacing an existing device to monitor the blockage degree of a filter element; mounting space is effectively saved; and the efficiency and the accuracy of filter element blockage detection are also improved.

Description

technical field [0001] The invention relates to the technical field of filter element detection, in particular to a differential pressure sensing valve assembly. Background technique [0002] With the strengthening of the greenhouse effect, the world's requirements for automobile exhaust emissions are becoming more and more stringent. In recent years, my country has continuously improved automobile exhaust emission standards, and the same is true for construction machinery. However, when the electronically controlled diesel engine starts at low speed and low temperature, the low-pressure oil circuit often cannot automatically empty the air in the oil circuit, causing the engine to start unstable, difficult to start, or suddenly shut down. [0003] On the other hand, the fuel system is a very important system in construction machinery. The operating quality of the fuel system directly affects the performance of the engine power. The fuel must be effectively filtered in the pat...

AI Technical Summary

Problems solved by technology

[0005] Fuel filtration requires the use of filter elements. The filter element is used for a long time, and the filter element will be blocked by impurity particles in the oil. When the filtering effect is affected, the filter element needs to be replaced in time to ensure normal use. The existing device for detecting blockage of the fuel filter element has a complex structure. , and the volume is large, it is not easy to install and transport, and the detection effect is poor. Therefore, it is necessary to design a differential pressure sensing valve assembly to realize the alarm of the filter clogging detection, save installation space, facilitate handling, and improve filter clogging. Detection efficiency and accuracy

Images