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Mechanical chopping simulator and valuing method thereof

A mechanical chopper and simulator technology, which is applied to instruments, scientific instruments, measuring devices, etc., can solve the problems of high quality of the mechanical chopper simulator, inconvenient use and portability, cumbersome measurement process, etc. Easy to carry and consistent results

Pending Publication Date: 2020-05-22
SHANDONG NON METALLIC MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The low-transmittance mechanical chopper simulator in use is composed of a standard polarimetric tube test seat, a high-speed DC brushless motor, and a fan-shaped chopper. The angle of the fan-shaped chopper is measured with a Wangong display. Calculating the transmittance indication value of the simulator, the measurement process is relatively cumbersome, and the existing simulator can only cooperate with one type of standard optical rotation, which has poor applicability. In addition, the quality of the low transmittance mechanical chopper simulator in use Large, about 1100g, inconvenient to use and carry

Method used

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  • Mechanical chopping simulator and valuing method thereof
  • Mechanical chopping simulator and valuing method thereof
  • Mechanical chopping simulator and valuing method thereof

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Experimental program
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Effect test

Embodiment 1

[0040] As shown in the drawings, a mechanical chopper simulator includes a housing 3 , a brushless motor 1 , a chopper 2 , and a chopper protection case 4 . The housing 3 includes a connected front housing 3a and a rear housing 3b, and the chopper protection case 4 includes a connected front chopper protection case 4a and a rear chopper protection case 4b. The chopper protection case 4b is connected with the front case 3a at the front end of the case 3 . The brushless motor 1 is arranged in the housing 3 and fixed at the center of the front housing 3a. The chopping plate 2 has a circular structure, and the chopping plate 2 is located in the chopping plate protective case 4 , and the rotating shaft of the brushless motor 1 is connected with the chopping plate 2 and coaxial with the chopping plate 2 . The upper edge and the lower edge of the housing 3 are respectively provided with a semicircular notch 6, wherein the midpoint of the upper edge and the lower edge of the front ho...

Embodiment 2

[0069] This embodiment is basically the same as Embodiment 1, the difference is: as Figure 7 As shown, the thickness of the chopping plate 2 is 0.5 mm, and three 12° concentric fan ring holes 201 with the center of the chopping plate as vertices are evenly distributed on the chopping plate 2, and the four vertices of the fan ring holes 201 are designed as Rounded corners, when the chopping plate 2 rotates to any angle, the straight end points I, II, III, and IV of the fan ring hole 201 and the curved edges V, VI are all in the circular through hole 7 on the chopping plate protective shell 4 Outside the projection on chopping plate 2.

[0070] Set the integral time of the fixed-value instrument as T=0.24s, and set different chopper speeds in the range of 3000rpm to 6000rpm After the chopper runs stably, observe the transmittance indication of the spectrophotometer, that is, the measured transmittance of the mechanical simulator, as shown in Table 3.

[0071] As a comparison...

Embodiment 3

[0080] This embodiment is basically the same as Embodiment 1, the difference is: as Figure 8 As shown, the thickness of the chopping plate 2 is 0.8 mm, and nine 12° concentric fan ring holes 201 with the center of the chopping plate as the vertices are evenly distributed. In order to ensure the processing accuracy, the four vertices of the fan ring are designed as rounded corners , when the chopper rotates to any angle, the straight end points Ⅰ, Ⅱ, Ⅲ, Ⅳ of the fan ring hole and the arc side lines Ⅴ and Ⅵ are all in the circular through hole 7 on the chopper protective shell 4 in the chopper outside the projection.

[0081] Set the integral time of the fixed-value instrument as T=0.24s, and set different chopper speeds in the range of 3000rpm to 6000rpm After the chopper runs stably, observe the transmittance indication of the spectrophotometer, that is, the measured transmittance of the mechanical simulator, as shown in Table 5.

[0082] As a comparison: the transmittance...

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Abstract

The invention discloses a mechanical chopping simulator and a valuing method thereof. The mechanical chopping simulator comprises a shell, a brushless motor, a chopper plate and a chopper plate protection shell. The chopper plate protection shell is connected with the front end of the shell, the brushless motor is arranged in the shell and is fixed to the center of the front end of the shell, andthe chopper plate is positioned in the chopper plate protective shell. A rotating shaft of the brushless motor is connected with the chopper plate and is coaxial with the chopper plate, semicircular notches are formed at the upper edge and the lower edge of the shell respectively, and at least three identical concentric fan ring holes are evenly formed in the chopper plate. Two circular through holes which are symmetrical relative to the center of the chopper plate are formed in the chopper plate protection shell, and the two circular through holes are concentric with the semicircular notchesat the upper edge and the lower edge of the shell respectively. According to the present invention, the transmittance of the mechanical chopping simulator is subjected to online valuation by adoptinga spectrophotometric method, the valuation process is simple, convenient and rapid, and the consistency of the valuation and use methods of the mechanical chopping simulator can be kept. The mechanical chopping simulator is small in mass and is convenient to use and carry.

Description

technical field [0001] The invention relates to a mechanical chopper simulator and a value determination method thereof, and relates to the calibration technology of analytical instruments, in particular to the low transmittance indication error and repeatability calibration technology of optical polarimeters such as optical polarimeters. Background technique [0002] The polarimeter is based on the optical rotation of special substances such as sugar solution, turpentine, etc., and determines the concentration of the substance by measuring the specific rotation. The optical polarimeter is an instrument for measuring the concentration of sugar solution based on the optical rotation of sugar solution. [0003] According to JJG 536 Polarimeter and Polarimeter Verification Regulations: When verifying the low transmittance indication error and repeatability of the automatic polarimeter, it is necessary to obtain 10% or 1% of the optical path light source according to the technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01
CPCG01N21/01
Inventor 潘忠泉杨欣欣荀其宁龚维刘霞王鹏李昕
Owner SHANDONG NON METALLIC MATERIAL RES INST