Engine thermostat lower shell air tightness detection tool

Abstract

The invention discloses an engine thermostat lower shell air tightness detection tool which includes an upper base plate (1) and a lower base plate (2). The upper base plate (1) and the lower base plate (2) are fixedly connected by four columns (3). The lower base plate (2) is provided with a positioning mechanism (4), and the lower base plate (2) is provided with a first cylinder (5), a second cylinder (6) and a third cylinder (7). The upper base plate (1) is provided with a fourth cylinder (8) and a fifth cylinder (9). The piston rods of the five cylinders are respectively provided with plugs, and the five plugs correspondingly seal the connecting holes of a lower shell. The lower base plate (2) is further provided with an automatic adjusting mechanism used for adjusting the position ofthe lower shell (100). The engine thermostat lower shell air tightness detection tool disclosed by the invention has high test efficiency. The position of a product can be adjusted in the test process. The accuracy of the test result is improved.

Description

technical field [0001] The invention relates to the technical field of engine thermostats, in particular to a tool for detecting the air tightness of the lower casing of the engine thermostat. Background technique [0002] A thermostat is an automatic temperature-regulating device, which can be regarded as a valve set on the coolant flow path to control the flow of coolant, and usually includes a thermostat housing and a temperature-sensing component. Among them, the thermostat housing includes a flange and a liquid inlet pipe and a liquid outlet pipe fixed on the flange for circulating the cooling liquid; the temperature sensing component is arranged in the thermostat housing, and by sensing the temperature of the cooling liquid, Expand or contract to achieve the regulation of coolant flow. [0003] In the prior art, the thermostat housing generally includes an upper housing and a lower housing, such as the attached figure 1 Shown is the lower housing 100 of an existing t...

AI Technical Summary

Problems solved by technology

[0004] Bubbles appear in the testing process not only because of the defect of the product itself, but also because the product is not positioned well, resulting in the plug not being pressed tightly. Therefore, it is also very important to ensure stable and accurate positioning of the product to be tested. The existing testing tooling Generally, the plugs are manually inserted into the connecting holes, and the operation efficiency is low. Later, some automatic compression devices appeared, but there are still some defects. After the plugs or the pressure plate are pressed into the product, no further position adjustment can be performed. , the inability to adjust the relevant position in the later stage will also lead to the occurrence of detection errors

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