Viscosity detector

Abstract

The invention provides a viscosity detector, comprising a main unit box (1), and a control device, a display device and a detection device arranged in the main unit box (1). The detection device comprises a detection platform (2) arranged in the main unit box (1), the top of the detection platform (2) is provided with an injection hole (21), a capillary (22) is arranged in the detection platform (2) and is connected with the injection hole (21) through a labyrinth passage (23), two sides of the detection platform (2) are provided with opposing detection holes (24) to detect viscosity of a liquid in the capillary, and a heating device (25), a refrigerating device (26) and a temperature sensor (27) are arranged on two sides of the capillary (22) inside the detection platform. The viscosity detector can provide quick heating, refrigerating and thermal insulation, allows oil to be injected more conveniently and reasonably, allows pressure in the capillary to be more stable and provides effectively improved detection precision.

Description

technical field [0001] The invention relates to the field of viscosity detection equipment, in particular to a temperature-adjustable, micro-sampling, and rapid-measurement oil viscosity detector. Background technique [0002] The kinematic viscosity of the oil is a concentrated expression of its aging and pollution state. The kinematic viscosity of each oil has a strict definition and control range. More importantly, the kinematic viscosity directly affects the oil film thickness of the lubricating oil, and then Affect its lubrication performance and lubrication state. Therefore, kinematic viscosity is the most basic test item in various lubricating oil test contents. Through kinematic viscosity detection, the phenomenon of oil aging, pollution, mixed use and other phenomena can be preliminarily identified. [0003] Existing viscometers fall into three categories: field viscometers, sonic field viscometers, and laboratory viscometers. Field viscometers typically do not h...

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Problems solved by technology

[0005] 1. Only the viscosity test at 40°C can be realized, and the viscosity detection of high-temperature oil and low-temperature deicing fluid cannot be realized

[0006] 2. Quantitative pipette, the operation of injecting oil samples must be ideal and uniform, not too fast, and there must be no air bubbles, and the capillary must be repeatedly wiped and the type of oil changed before the capillary is rinsed, otherwise the oil will not only move under the action of gravity , the measurement accuracy is poor, and the repeatability accuracy is only 3%

[0007] 3. The original air in the capillary is discharged from the opening and closing capillary slit due to the extrusion of the oil. The closing tightness of each opening and closing slit is slightly different and the slits of different instruments are different. To block the oil movement, the oil viscosity detection is affected by the current air discharge speed

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