Background technology
Color selector is a kind of optical characteristics of utilizing material, normal with being off color, surperficial defectiveness or inner rotten defective product and foreign material harmless detecting from big batch materials, and the grain equipment of automatic sorting rejecting, the coarse cereals color selector is mainly used in the sorting of coarse cereals such as peanut, beans.
Optical system is the key component of color selector, mainly is made up of optical elements such as light source, background board, optical filter, smart camera, camera lens and relevant servicing unit.
Light source generally is to make full use of luminous energy, material is evenly thrown light on from helping, and the physical dimension of light source, service life, replacing comfort level and economy equal angles consider type selecting, generally selects monochromatic source.
In the actual use of coarse cereals color selector, a lot of material defective product states are a kind of incessantly, as the peanut particle, have surface damage and rotten dark-coloured state.Adopt monochromatic source to be difficult to certified products in the peanut and defective product are separated fully.The peanut particle is when using red light source separately, and rotten dark-coloured benevolence look selects respond well, but surface damage benevolence can only be selected about 80%, and when using green light source separately, the look of surface damage benevolence selects respond well, and the effect of rotten dark-coloured benevolence can not meet the demands, and can not both take into account.
The utility model content
The utility model provides a kind of double-colored final election coarse cereals color selector, solved the coarse cereals color selector and have at material the problem that can not take into account the look choosing under the situation of multiple defective product state.
The utility model is achieved through the following technical solutions:
A kind of double-colored final election coarse cereals color selector, by vibra feeder, chute, separation chamber, look selects optical system, control cabinet, air current spray nozzle, spraying valve and discharge bucket at a high speed forms, described vibra feeder below is provided with the chute of inclination, before the both sides of chute are respectively, back separation chamber, the below of described chute is equipped with an exhaust flow nozzle, the air current spray nozzle below sets out hopper, on described, be respectively equipped with look in the following separation chamber and select optical system, described look selects optical system by the high frequency light source, optical lens, optical filter, background board and smart camera are formed, it is characterized in that: described lighting source is white high frequency fluorescent tube, before described, look in the back separation chamber selects in the optical system and is provided with, following two groups of optical lens, and on, following two groups of optical lens acutangulate distribution, and the acute angle angle is between the 8-15 degree, described on, be separately installed with redness before following two groups of optical lens, green color filter.
Described a kind of double-colored final election coarse cereals color selector is characterized in that: described optical filter is to select according to the sensitive property of spectrum of coarse cereals material, selects redness and green color filter for use.
Described optical filter is a thin-film interference filters, is on a stator base, alternately forms with Vacuum Coating method to have certain thickness a kind of rudimentary time, the solid Fabry-Perot interferometer of plural serial stage.The selection of the material of rete, thickness and series system, determine that by needed centre wavelength and transmission bandwidth Red lightscreening plate can only allow red light component pass through, Red lightscreening plate can only allow ruddiness pass through, all the other most of spectrum are absorbed by optical filter, and green color filter can only allow green component pass through.
Described light source adopts white high frequency fluorescent tube, and its spectrum is made up of red, green, blue three coloured light spectrum.High frequency white fluorescent lamp is radiated on the material, and reverberation only passes through redness and green component after being passed through red, green two groups of optical filters, and all the other spectrum are absorbed by optical filter.Red and green component enters up and down respectively, and two set of shots are received by smart camera.Smart camera carries out signals collecting, analysis and judgement according to these two kinds of reflecting components, and any one group of signal is differentiated substandard products, all provides stroke signal, drives magnetic valve substandard products are blown out.
The look of this color selector selects principle: material certified products and substandard products reflectivity under full spectrum has nothing in common with each other, and the wave band of selection difference in reflectivity maximum helps substandard products and certified products are distinguished as the light source of color selector most.Because coarse cereals substandard products state is a kind of incessantly, use monochromatic source not meet the demands, color selector need being designed to up and down as the double-colored light source of direct use, two groups of separation chamber carry out twice sorting.The utility model utilization white high frequency fluorescent tube and dichroic filter can be implemented in one pack system and select indoor double-colored sorting.
The utility model has the advantages that:
The utility model makes the application of coarse cereals color selector more flexible and extensive, can be applicable to exist the material look choosing of multiple defective product state, the light path system simplicity of design, and Installation and Debugging are simple, avoided the structural Redundancy Design of color selector simultaneously.
The specific embodiment
A kind of double-colored final election coarse cereals color selector, by vibra feeder 1, chute 2, separation chamber, look selects optical system, control cabinet, air current spray nozzle, spraying valve and discharge bucket at a high speed forms, vibra feeder 1 below is provided with the chute 2 of inclination, before the both sides of chute 2 are respectively, back separation chamber 3,4, the below of chute 2 is equipped with an exhaust flow nozzle, the air current spray nozzle below sets out hopper, before, back separation chamber 3, be respectively equipped with look in 4 and select optical system, look selects optical system by white high frequency fluorescent tube 5, on, following two groups of optical lens 6,7, background board 8 and smart camera are formed, and on, following two groups of optical lens 6,7 one-tenth 12 degree distribute, on, following two groups of optical lens 6, be separately installed with optical filter 9 before 7,10, optical filter 9,10 have different spectral characteristics, the utility model is selected redness and green color filter for use, can only be respectively by red, green two kinds of color components.