Test machine for service life of valve core of water heating product

Abstract

The invention relates to a test machine for service life of a valve core of a water heating product. The test machine comprises a test device, a water supply system, a programmable logic controller and a computer, wherein the test device is used for fixing a tested product and driving the tested product to repeatedly perform various water-discharging actions; the test machine is characterized in that the water supply system comprises a cold water circulation system and a hot water circulation system; each of the cold and hot water circulation systems comprises a water tank, a conveying pump, a frequency converter, a recycling tank, a recycling pump and a pressure sensor; a refrigerating device is arranged on the water tank of the cold water circulation system; a heating device is arranged on the water tank of the hot water circulation system; and the programmable logic controller is respectively connected with the frequency converter, a pressure sensor, the refrigerating device, the heating device and a temperature sensor and is used for controlling all the devices to coordinately work. The test machine provided by the invention has the advantages of convenience in operation, energy conservation, high test precision, and the like.

Description

technical field [0001] The invention relates to a water heating product spool life detection machine. Background technique [0002] At present, most plumbing manufacturers in China fail to conduct testing in accordance with relevant standards in the life testing of plumbing product spools. They only use their years of production experience to test the life of product spools. The result is that there is no clear evaluation data for product testing. , which will inevitably lead to the low accuracy and precision of the detection valve core life of the products produced, and cannot verify whether the technical performance, structure, and quality of the product itself are reasonable, and whether they meet the requirements of relevant standards, which also directly affects the products in the domestic and international markets. competitiveness. [0003] The existing plumbing product spool life testing machine is mainly composed of a test device, a control device and a water suppl...

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Problems solved by technology

[0002] At present, most plumbing manufacturers in China fail to conduct testing in accordance with relevant standards in the life testing of plumbing product spools. They only use their years of production experience to test the life of product spools. The result is that there is no clear evaluation data for product testing. , which will inevitably lead to the low accuracy and precision of the detection valve core life of the products produced, and cannot verify whether the technical performance, structure, and quality of the product itself are reasonable, and whether they meet the requirements of relevant standards, which also directly affects the products in the domestic and international markets. competitiveness

[0003] The existing plumbing product spool life testing machine is mainly composed of a test device, a control device and a water supply system for fixing the product to be tested and operating the product to repeatedly perform various water discharge actions, such as the single-handle double-control system with patent number 201010167547.2 A faucet valve core life testing machine specifically discloses a test device consisting of a test bench, a faucet positioning mechanism, a rotating mechanism arranged on the test bench, and an actuator connected to the faucet valve core and capable of allowing the faucet to discharge water. system and control device, but its water supply system still has deficiencies in automatic management, cold and hot water temperature adjustment, cold and hot water temperature maintenance, energy recovery, etc. In addition, it cannot supply low-temperature chilled water to simulate plumbing products It is used in cold areas, so it is impossible to accurately detect the life of the spool of the plumbing product in actual use

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