Slit device, miniature Raman scattering melamine detection spectrometer device

Abstract

The invention discloses a slit device which comprises a cam (1), a fork frame (CJ), a first hard plate (CK1), a second hard plate (CK2), a third hard plate (CK3) and a slide rail, wherein a slit between the first hard plate (CK1) and the third hard plate (CK3) can serve as an optical slit, and the width of the slit is a value indicated by a cam scale. A minitype raman scattering tripolycyanamide detection spectrum device is provided with the cam. The slit device provided by the invention can prevent corrosion, further can prevent accuracy change due to bearing unevenness caused by bearing abrasion, and can keep the accuracy unchangeable.

Description

technical field

[0001] The invention relates to the field of optics, in particular to a slit device and a miniature Raman scattering melamine detection spectrum device. technical background

[0002] The slit devices for optical instruments in the prior art are all adjusted in the manner of thread advancement, which is cumbersome to adjust and is prone to loss of accuracy due to thread wear of the screw mandrel, and there is room for improvement. Contents of the invention

[0003] The invention relates to a slit device and a miniature Raman scattering melamine detection spectrum device, and provides new design ideas.

[0004] 1. The cam is characterized in that it has an outer contact surface (T1), an inner cavity (T2), an inner contact surface (T4), and a rotating shaft;

[0005] The inner cavity (T2) is a circular blind hole, which opens on the lower surface of the cam, and the axis of the inner cavity (T2) coincides with the axis of the rotating shaft; the inner contact...

Examples

Embodiment 1

[0027] Embodiment 1, the cam has an outer contact surface (T1), an inner cavity (T2), an inner contact surface (T4), and a rotating shaft;

[0028] The inner cavity (T2) is a circular blind hole, which opens on the lower surface of the cam, and the axis of the inner cavity (T2) coincides with the axis of the rotating shaft; the inner contact surface (T4) and the cylindrical surface of the cavity interface of the inner cavity (T2) coincide;

[0029] The outer contact surface (T1) is a cylindrical surface, and the axis of the outer contact surface (T1) does not coincide with the axis of the rotating shaft; the axis of the outer contact surface (T1) is parallel to the axis of the rotating shaft;

[0030] The diameter of the outer contact surface (T1) is greater than the diameter of the inner contact surface (T4);

[0031] There is a limiting wall between the outer contact surface (T1) and the inner contact surface (T4);

[0032] The upper surface of the cam has a scale line, th...

Embodiment 2

[0038] Embodiment 2, the slit device is characterized in that it includes the cam described in 1, the fork (CJ), the first hard board (CK1), the second hard board (CK2), the third hard board (CK3), the slide rail;

[0039] The rotation axis of the cam is connected with the yoke (CJ), and the cam can rotate freely around the rotation axis;

[0040] The top of the first hard plate (CK1) has a collision cylinder, and the axis of the collision cylinder is parallel to the axis of the rotation shaft of the cam;

[0041] The first hard plate (CK1) is in contact with the inner contact surface (T4) of the cam, and the diameter line of the first hard plate (CK1) is coincident with the diameter line of the inner contact surface (T4) of the cam;

[0042] The first hard plate (CK1) can slide on the slide rail, and the first hard plate (CK1) can contact the inner contact surface (T4) of the cam;

[0043] The third hard plate (CK3) can slide on the slide rail, and the third hard plate (CK3...

Embodiment 3

[0053] Embodiment 3. On the basis of Embodiment 2, the slit device also includes an automatic control device. Before the cam rotates, the first hard plate (CK1) retreats to the direction of the cam shaft to prevent the gap between the first hard plate (CK1) and the cam. Friction, the third hard plate (CK3) moves away from the cam before the cam rotates to prevent friction between the third hard plate (CK3) and the cam; after the cam rotation is completed, the first hard plate (CK1) slides to the inner contact surface (T4) of the cavity (T2), and the third hard plate (CK3) slides to the outer contact surface (T1) of the cam.

technical field

[0001] The invention relates to the field of optics, in particular to a slit device and a miniature Raman scattering melamine detection spectrum device. technical background

[0002] The slit devices for optical instruments in the prior art are all adjusted in the manner of thread advancement, which is cumbersome to adjust and is prone to loss of accuracy due to thread wear of the screw mandrel, and there is room for improvement. Contents of the invention

[0003] The invention relates to a slit device and a miniature Raman scattering melamine detection spectrum device, and provides new design ideas.

[0004] 1. The cam is characterized in that it has an outer contact surface (T1), an inner cavity (T2), an inner contact surface (T4), and a rotating shaft;

[0005] The inner cavity (T2) is a circular blind hole, which opens on the lower surface of the cam, and the axis of the inner cavity (T2) coincides with the axis of the rotating shaft; the inner contact...

Examples

Embodiment 1

[0027] Embodiment 1, the cam has an outer contact surface (T1), an inner cavity (T2), an inner contact surface (T4), and a rotating shaft;

[0028] The inner cavity (T2) is a circular blind hole, which opens on the lower surface of the cam, and the axis of the inner cavity (T2) coincides with the axis of the rotating shaft; the inner contact surface (T4) and the cylindrical surface of the cavity interface of the inner cavity (T2) coincide;

[0029] The outer contact surface (T1) is a cylindrical surface, and the axis of the outer contact surface (T1) does not coincide with the axis of the rotating shaft; the axis of the outer contact surface (T1) is parallel to the axis of the rotating shaft;

[0030] The diameter of the outer contact surface (T1) is greater than the diameter of the inner contact surface (T4);

[0031] There is a limiting wall between the outer contact surface (T1) and the inner contact surface (T4);

[0032] The upper surface of the cam has a scale line, th...

Embodiment 2

[0038] Embodiment 2, the slit device is characterized in that it includes the cam described in 1, the fork (CJ), the first hard board (CK1), the second hard board (CK2), the third hard board (CK3), the slide rail;

[0039] The rotation axis of the cam is connected with the yoke (CJ), and the cam can rotate freely around the rotation axis;

[0040] The top of the first hard plate (CK1) has a collision cylinder, and the axis of the collision cylinder is parallel to the axis of the rotation shaft of the cam;

[0041] The first hard plate (CK1) is in contact with the inner contact surface (T4) of the cam, and the diameter line of the first hard plate (CK1) is coincident with the diameter line of the inner contact surface (T4) of the cam;

[0042] The first hard plate (CK1) can slide on the slide rail, and the first hard plate (CK1) can contact the inner contact surface (T4) of the cam;

[0043] The third hard plate (CK3) can slide on the slide rail, and the third hard plate (CK3...

Embodiment 3

[0053] Embodiment 3. On the basis of Embodiment 2, the slit device also includes an automatic control device. Before the cam rotates, the first hard plate (CK1) retreats to the direction of the cam shaft to prevent the gap between the first hard plate (CK1) and the cam. Friction, the third hard plate (CK3) moves away from the cam before the cam rotates to prevent friction between the third hard plate (CK3) and the cam; after the cam rotation is completed, the first hard plate (CK1) slides to the inner contact surface (T4) of the cavity (T2), and the third hard plate (CK3) slides to the outer contact surface (T1) of the cam.

Images