Multi-channel floating seal device for testing seal performance of metering jet pump

Abstract

The invention relates to a multi-channel floating seal device for testing seal performance of metering jet pump. The device comprises a framework, an air cylinder is arranged at the top of the framework, and the piston rod of the air cylinder faces downwards. The device is characterized in that an oil accommodating block is arranged below the air cylinder, and the upper and the lower surfaces of the oil accommodating block are arranged in parallel. Vertical holes corresponding to the joint of a liquid inlet port, a liquid returning port and an injecting port of the measured supply module are formed in the oil accommodating block, and first sealing heads are arranged at the upper end of each vertical hole. A pressing plate and a supporting plate are arranged on the upper surface and the lower surface of the oil accommodating block respectively, and the outer end of the air cylinder is connected with the pressing plate. A shaft hole corresponding to each vertical hole is formed in the vertical plate; a shaft is arranged in each shaft hole, the upper end of each shaft penetrates each shaft hole from the lower surface of the supporting plate and stretches into one vertical hole and is fixed with a second sealing head; an oil inlet is formed in one sidewall of the oil accommodating block, and each two adjacent vertical holes are communicated with each other; a pressing block is arranged at the lower end of each shaft, a vertical blind hole is formed in the lower surface of each pressing block, a vent hole is formed in one side of each pressing block, and each vent hole is communicated with one vertical blind hole. The device adopted by the invention needs no rechecking, consumes less time, is high in efficiency, low in testing cost, and is suitable for testing seal performance of the metering jet pump.

Description

technical field [0001] The invention relates to a testing device. Specifically, it is a multi-way floating sealing device used to test the sealing performance of the pump body of the metering jet pump. Background technique [0002] It is known in the metering jet pump manufacturing industry that in order to ensure the quality of the metering jet pump, the sealing performance of the pump body must be tested before the metering jet pump leaves the factory. Therefore, the metering jet pump manufacturing industry is equipped with sealing performance testing devices. The traditional sealing performance detection device comprises a frame, and a cylinder is arranged on the top of the frame, and the piston rod of the cylinder faces downward. When testing, install joints on the liquid inlet, liquid return port and injection port of the metering jet pump to be tested, and put a sealing ring on each joint by hand, and make the piston rod extend down by starting the cylinder, and pres...

AI Technical Summary

Problems solved by technology

Although this method can be used to detect the sealing performance of the metering jet pump, there are the following problems: one is that the sealing ring needs to be manually placed on the joint during the test, and the joint needs to be aligned with the piston rod of the cylinder. Strict, time-consuming and inefficient

Second, because the sealing ring is often in contact with the joint, and the pressure is not equal due to non-specific inspection, the sealing ring is easy to wear and has a short life.

Once worn, it will affect the accuracy of the test results, making the test results inaccurate

Third, due to inaccurate test results, many retests, and high cost of testing

Images