Light source system for color sorter

Abstract

The utility model provides a light source system for a color sorter, which is characterized in that light-emitting modules are linearly arranged on a strip-shaped light source plate at equal intervals, and light-bundling covers for guiding light rays of the light-emitting modules are correspondingly arranged at the positions of the light-emitting modules on the strip-shaped light source plate; the whole light bundling cover is in a horn shape, the light emitting module is located in the middle of an opening area of the small-caliber end of the light bundling cover, the batten-shaped light source plate is arranged on the groove bottom in a groove cavity of the heat dissipation groove, and the length direction of the batten-shaped light source plate is consistent with the groove length direction of the heat dissipation groove. The uniformity, the concentration ratio and the irradiation distance of light emitted by the light source are improved through the light bundling cover.

Description

Technical Field

[0001] The utility model belongs to the field of optoelectronic technology of color sorters, and in particular relates to a light source system for a color sorter. Background Art

[0002] Color sorters are devices that automatically sort out heterogeneous impurities in materials using photoelectric detection technology based on differences in the optical properties of the materials. Color sorters are currently widely used in multiple industries, from agriculture to industry, and can meet the color sorting requirements of more than 7,000 products such as rice, tea, beans, medicinal materials, seeds, dried shrimps, nuts, various dry goods, plastics, jewelry, ores and other special materials. Since ores and plastics will emit fluorescence under the irradiation of 200nm to 400nm ultraviolet light, for example, scheelite emits blue fluorescence under the irradiation of ultraviolet light in the 200nm to 400nm band, the color sorter can complete the sorting of ores based on the fluorescence reaction of the ore. However, the traditional light source of the color sorter is mainly used for the sorting of grains. The light range emitted by the light source of the color sorter is small and the irradiation distance is short, which limits the application of the color sorter in the field of ore sorting. Utility Model Content

[0003] The utility model provides a light source system for a color sorter, aiming to improve the uniformity, concentration and irradiation distance of light emitted by the light source.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A light source system for a color sorter, wherein light-emitting modules are arranged equidistantly and in a straight line on a strip-shaped light source board, and light beam covers for guiding the propagation of light from the light-emitting modules are provided at corresponding locations on the strip-shaped light source board. The light beam cover is horn-shaped as a whole, and the light-emitting modules are located in the middle of the mouth area of ​​the small-diameter end of the light beam cover. The strip-shaped light source board is arranged on the bottom of a groove in a groove cavity of a heat dissipation groove, and the length direction of the strip-shaped light source board is consistent with the groove length direction of the heat dissipation groove.

[0006] In the above scheme, the strip-shaped light source board is arranged on the bottom of the groove in the groove cavity of the heat dissipation groove, and the light-emitting modules are arranged equidistantly and in a straight line on the strip-shaped light source board. A beam cover for guiding the light propagation of the light-emitting module is provided at the position of the light-emitting module. The beam cover improves the uniformity, concentration and irradiation distance of the light emitted by the light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0008] Figure 2 It is a structural schematic diagram of a strip-shaped light source board in the utility model;

[0009] Figure 3It is a structural schematic diagram of the heat dissipation slot in the utility model;

[0010] Figure 4 It is a three-dimensional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0011] like Figures 1 to 4 A light source system for a color sorter is shown, and light-emitting modules 11 are arranged equidistantly and in a straight line on a strip-shaped light source board 10. A beam cover 20 for guiding the propagation of light from the light-emitting modules 11 is provided at the position of the light-emitting modules 11 on the strip-shaped light source board 10. The beam cover 20 is trumpet-shaped as a whole, and the light-emitting modules 11 are located in the middle of the mouth area of ​​the small-diameter end of the beam cover 20. The strip-shaped light source board 10 is arranged on the bottom of the groove in the groove cavity of the heat dissipation groove 30, and the length direction of the strip-shaped light source board 10 is consistent with the groove length direction of the heat dissipation groove 30.

[0012] The strip-shaped light source board 10 in the above scheme has light-emitting modules 11 arranged equidistantly and in a straight line. The strip-shaped light source board 10 is arranged at the bottom of the groove in the groove cavity of the heat dissipation groove 30. The heat dissipation groove 30 is used to dissipate the heat of the strip-shaped light source board 10, which can reduce the working temperature of the light-emitting module 11 and improve the working stability of the light-emitting module 11. A trumpet-shaped beam cover 20 is provided at the position of the light-emitting module 11 on the strip-shaped light source board 10 to guide the propagation of light from the light-emitting module 11. The light-emitting module 11 is located in the middle of the mouth area of ​​the small-diameter end of the beam cover 20. The trumpet-shaped beam cover 20 is used to gather the light emitted by the light-emitting module 11, reduce the size of the light spot emitted by the light-emitting module 11, improve the uniformity, concentration and irradiation distance of the light emitted by the light-emitting module 11, and make the light uniformity irradiated on the material better.

[0013] Furthermore, the small-diameter end of the light beam cover 20 has an external flange 22, and the light-emitting module 11 is surrounded by a shallow recess 12. The peripheral contour of the flange 22 is consistent with the shape and size of the peripheral wall contour of the shallow recess 12. The flange 22 is placed on the shallow recess 12 and the thickness of the flange 22 is greater than the depth of the recess of the shallow recess 12.

[0014] In the above scheme, the peripheral contour of the flange 22 is consistent with the shape and size of the peripheral wall contour of the shallow recess 12. By positioning the flange 22 through the shallow recess 12, it can ensure that the light-emitting module 11 is located at the center of the flange 22, that is, ensure that the light-emitting module 11 is located in the middle of the mouth area of ​​the small-diameter end, which is beneficial for the beam cover 20 to guide the light propagation of the light-emitting module 11.

[0015] Furthermore, the cover body 23 of the light smear cover 20 is conical, the flange 22 is annular, the small aperture end of the light smear cover 20 is a cylindrical hole section 21, the aperture of the central hole 221 of the flange 22 is larger than the aperture of the cylindrical hole section 21 and the two constitute a concentrically arranged stepped hole.

[0016] In the above scheme, the aperture of the central hole 221 of the flange 22 is larger than the aperture of the cylindrical hole segment 21 and the two are step holes arranged with the same core. The light emitted by the light-emitting module 11 is first collected by the central hole 221 with a larger aperture, and then guided into the conical cover body 23 through the cylindrical hole segment 21, so as to collect and amplify the light emitted from the light-emitting module 11. In addition, the beam cover 20 in the present application is coated with a reflective metal coating, which further improves the uniformity, concentration and irradiation distance of the light emitted by the light-emitting module 11.

[0017] Furthermore, in order to dissipate heat for the strip-shaped light source board 10 and improve the heat dissipation effect of the heat dissipation groove 30, the present application sets heat dissipation fins 40 on the inner and outer sides of the groove bottom 31 of the heat dissipation groove 30, and sets heat dissipation fins 40 extending inward on both side groove walls 32 to assist heat dissipation.

[0018] Furthermore, the light emitting module 11 in the present application is a nitride light emitting material. The use of nitride light emitting material can have high light emitting efficiency and an emission spectrum with a wavelength of 200nm to 400nm, so it can be easily used as a light source for a color sorter for mineral sorting.

Claims

1. A light source system for a color sorter, characterized in that: The strip-shaped light source board (10) is provided with light-emitting modules (11) arranged at equal intervals and in a straight line. A beam cover (20) for guiding the propagation of light from the light-emitting module (11) is provided at the position of the light-emitting module (11) on the strip-shaped light source board (10). The beam cover (20) is horn-shaped as a whole and the light-emitting module (11) is located in the middle of the mouth area of ​​the small-diameter end of the beam cover (20). The strip-shaped light source board (10) is arranged on the bottom of the groove in the groove cavity of the heat dissipation groove (30). The length direction of the strip-shaped light source board (10) is consistent with the groove length direction of the heat dissipation groove (30).

2. The light source system for a color sorter according to claim 1, characterized in that: The small-diameter end of the light beam cover (20) is provided with an external flange (22), the periphery of the light emitting module (11) is a shallow concave platform (12), the peripheral contour of the flange (22) is consistent with the shape and size of the peripheral wall contour of the shallow concave platform (12), the flange (22) is placed on the shallow concave platform (12) and the thickness of the flange (22) is greater than the depth of the depression of the shallow concave platform (12).

3. The light source system for a color sorter according to claim 2, characterized in that: The cover body (23) of the light beam cover (20) is conical, the flange (22) is annular, the small aperture end of the light beam cover (20) is a cylindrical hole section (21), the aperture of the central hole (221) of the flange (22) is larger than the aperture of the cylindrical hole section (21), and the two form a concentrically arranged stepped hole.

4. The light source system for a color sorter according to claim 1, characterized in that: The inner and outer sides of the groove bottom (31) of the heat dissipation groove (30) are provided with heat dissipation fins (40), and the groove walls (32) on both sides of the heat dissipation groove (30) are provided with heat dissipation fins (40) extending inwards.

5. The light source system for a color sorter according to claim 1, characterized in that: The light-emitting module (11) is made of nitride light-emitting material.

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