TWI702991B - Laser cleaning equipment used in agricultural and livestock products - Google Patents

Abstract

The present invention provides a laser cleaning equipment applied to agricultural and livestock products, which includes a laser light source for power adjustment according to a preset frequency, a preset pulse width and a preset processing depth, and outputs a laser beam; An optical adjustment device receives the laser beam output by the laser light source, and adjusts the focus of the laser beam to a point-shaped, linear or flat laser spot, and then outputs it; an object to be cleaned is set on a On the cleaning platform, and receive the laser spot output by the optical adjustment device to irradiate the surface of the object to be cleaned, and cause the surface of the object to be cleaned to instantly generate a high-temperature plasma state, and remove bacteria and insects attached to the surface Eggs, pesticide residues and filth can be cleaned with low cost, fewer procedures, short working time and good cleaning effect by using the aforementioned components, and the present invention is a non-contact cleaning method that can reduce indirect pollution problems.

Description

Laser cleaning equipment used in agricultural and livestock products

The present invention provides a laser cleaning device applied to agricultural and livestock products, especially a laser cleaning device including a laser light source, an optical adjustment device, and at least one object to be cleaned. The aforementioned components achieve low cost, A cleaning operation with few procedures, short operation time and good cleaning effect, and the present invention is a non-contact cleaning method, which can reduce indirect pollution problems.

According to the principle, food is the most important thing for the people. In addition to the development of industrial technology, all countries must also establish the people's livelihood foundation such as agriculture and animal husbandry to ensure the country's stable growth. However, due to environmental pollution, excessive use of pesticides, and artificial addition of illegal materials to food, food safety problems are frequently caused. In order to prevent the adverse effects of eating food on the human body, basic food cleaning is necessary. Generally, the common method of cleaning food is washing with water or using a detergent that is harmless to the human body to remove bacteria, insect eggs, pesticide residues and filth attached to the surface of the food. The aforementioned cleaning method is for the agriculture and animal husbandry industry to require a lot of cleaning. , It is necessary to purchase expensive cleaning equipment and consume a lot of water resources. At the same time, the cleaning equipment takes up a lot of space, and the cleaned food needs to be drained and dried. Moreover, when washing the food surface with a water jet, if it encounters strong adhesion attachments, it cannot be cleaned in one operation. It must be cleaned by repeating the cleaning procedure, which consumes more water resources and cleaning time. The high cost of cleaning equipment required, more procedures, and longer operation time are all disadvantages, and those in this industry need to increase improving.

Therefore, in view of the above-mentioned conventional problems and deficiencies, the inventor collected relevant information through multiple evaluations and considerations, and used years of research and development experience in this industry to make continuous trials and modifications. The invention patent for laser cleaning equipment was born.

The main purpose of the present invention is to provide a laser cleaning equipment for agricultural and livestock products, which includes a laser light source, an optical adjustment device and at least one object to be cleaned. The laser light source is based on a predetermined frequency and a predetermined pulse. The width and a preset processing depth are adjusted for power, and a laser beam is output; the optical adjustment device receives the laser beam output by the laser light source, and adjusts the laser beam to a point-like or linear-like focus Or a flat laser spot is output; the object to be cleaned is set on a cleaning platform, and receives the laser spot output by the optical adjustment device to irradiate the surface of the object to be cleaned, and make the object to be cleaned The surface instantaneously generates a high-temperature plasma state, and removes bacteria, insect eggs, pesticide residues and filth attached to the surface. By using the aforementioned components, a cleaning operation with low cost, fewer processes, short operation time and good cleaning effect is achieved, and The invention is a non-contact cleaning method, which can reduce the problem of indirect pollution.

The secondary objective of the present invention is that the preset frequency range of the laser light source is 1 to 5000 kHz.

Another object of the present invention is that the preset pulse width range of the laser light source is 1 to 1000 ns.

Another object of the present invention is that the preset processing depth range of the laser light source is 1 to 1000 μm.

Another object of the present invention is that when the object to be cleaned is a peel, the laser light The preset pulse width range of the source is set to 1 to 150ns, and the preset processing depth of the laser light source is less than 50μm.

Another objective of the present invention is that when the object to be cleaned is an eggshell, a second cleaning is required. The preset pulse width range of the laser light source is set to 25 to 250 ns for the first cleaning; The preset pulse width range of the laser light source is set to 1-25ns.

1: Laser light source

11: Laser beam

12: Laser spot

2: Optical adjustment device

21: Beam expander group

211: concave lens

212: Convex lens

22: Cylindrical lens

23: Galvanometer group

231: X axis galvanometer

232: X axis motor

233: Y-axis galvanometer

234: Y axis motor

24: Field lens

25: Optical fiber

26: Optical lens group

27: Focusing lens

3: Things to be cleaned

4: Clean the platform

The first figure is a functional block diagram of the laser cleaning device of the present invention.

The second figure is a diagram of the first embodiment of the laser cleaning device of the present invention.

The third figure is a diagram of the second embodiment of the laser cleaning device of the present invention.

The fourth diagram is a diagram of the third embodiment of the laser cleaning device of the present invention.

In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the present invention are illustrated in detail below to explain the structure and function of the preferred embodiment of the present invention in order to fully understand.

Please refer to the first figure, which is a functional block diagram of the laser cleaning equipment of the present invention. From the figure, it can be seen that the laser cleaning equipment of the present invention applied to agricultural and livestock products mainly includes a laser light source 1, an optical adjustment device 2 and at least one object to be cleaned 3, the detailed structure and connection relationship of each component are explained as follows: the laser light source 1 performs power adjustment according to a preset frequency, a preset pulse width and a preset processing depth, and outputs a Laser beam. The preset frequency range of the laser light source 1 The range is 1 to 5000 kHz (kilohertz); the preset pulse width range of the laser light source 1 is 1 to 1000 ns (nanoseconds); the preset processing depth range of the laser light source 1 is 1 to 1000 μm (Microns).

The optical adjustment device 2 receives the laser beam 11 output by the laser light source 1 and adjusts the focus of the laser beam 11 to a point-shaped, linear or flat laser spot 12 for output.

The object to be cleaned 3 is set on a cleaning platform 4, and receives the laser spot 12 output by the optical adjustment device 2 to irradiate the surface of the object to be cleaned 3, and cause the surface of the object to be cleaned 3 to instantly generate high temperature Plasma state, and remove bacteria, insect eggs, pesticide residues and dirt attached to the surface. The above-mentioned cleaning platform 4 refers to a cleaning surface, a clamping fixture or a conveyor belt. Of course, the present invention is not limited to this. Any plane or jig that can place or hold the object 3 to be cleaned falls within the protection scope of the present invention.

When the object to be cleaned 3 is a peel (for example, the peel of mango or apple), the preset pulse width range of the laser light source 1 is set to 1 to 150 ns, and the preset processing depth of the laser light source 1 is less than 50μm.

When the object to be cleaned 3 is an egg shell (eg egg or quail egg shell), a second cleaning is required. The preset pulse width range of the laser light source 1 is set to 25 to 250 ns for the first cleaning ; The second cleaning set the preset pulse width range of the laser light source 1 to 1 to 25 ns.

Please refer to the second figure, which is a diagram of the first embodiment of the laser cleaning equipment of the present invention. The optical adjustment device 2 includes a beam expander group 21, a galvanometer group 23 and a field lens 24. The beam expander group expands the laser beam 11 of the laser light source 1, and has The expanded laser beam 11 is transmitted to the galvanometer group 23 to deflect the laser beam 11 in the X-axis and Y-axis directions, and homogenize and focus the laser beam 11 through the field lens 24, and A laser spot 12 with a circular plane or a rectangular plane is generated to remove the surface of the object 3 to be cleaned. The aforementioned optical adjustment device 2 further includes a cylindrical lens 22, which is disposed between the beam expander group 21 and the galvanometer group 23 for the laser spot projected on the surface of the object 3 to be cleaned 12 Adjusted from a circular plane to a linear shape. The function of the field lens 24 is to change the position of the electric beam 11 without changing the characteristics of the optical system, and to adjust the laser beam 11 to a uniformly sized focused laser spot 12.

As an example of the practical application of the optical adjustment device 2 described above, the laser light source 1 emits a 6mm diameter laser beam 11 into the beam expander group 21, and the beam expander group 21 includes a concave lens 211 with a focal length of 5mm. With a convex lens 212 with a focal length of 15mm, the laser beam 11 is expanded, and the expanded laser beam 11 is transmitted to the galvanometer group 23 and a field lens 24 with a focal length of 160mm, forming a circle The laser spot 12 can reach a diameter of 30 μm. After the cylindrical lens 22 is set at the rear end of the beam expander group 21 at a distance of 40-120mm, the circular laser spot 12 can be converted into a linear laser spot 12. The length of the linear laser spot ranges from 30-5000μm .

Please refer to the third figure, which is a diagram of the second embodiment of the laser cleaning equipment of the present invention. The optical adjustment device 2 is a galvanometer of a laser marking machine. The galvanometer of the laser marking machine includes a vibration A lens group 23 and a field lens 24 are formed. The galvanometer lens group 23 receives the laser beam 11 of the laser light source 1 and then deflects the laser beam 11 in the X-axis and Y-axis directions, and transmits through the field lens 24 The laser beam 11 is homogenized and focused, and a laser spot 12 of a circular plane or a rectangular plane is generated to remove the surface of the object 3 to be cleaned.

The above-mentioned galvanometer group is composed of an X-axis motor 232 that controls an X-axis galvanometer 231, and a Y-axis motor 234 that controls a Y-axis galvanometer 233. The principle of operation is that when the laser light source 1 After the laser beam 11 irradiates the X-axis galvanometer 231 (or Y-axis galvanometer 233), the X-axis motor 232 (or Y-axis motor 234) continuously passes through a control software (not shown) Adjust the deflection angle of the X-axis galvanometer 231 (or Y-axis galvanometer 233), adjust the position of the laser spot 12 to irradiate the surface of the object to be cleaned 3 through the X-axis and Y-axis directions, and use the laser spot 12 to move continuously A cleaning area is formed, and a preset jig (not shown in the figure) is used to rotate the object 3 to be cleaned in a horizontal or vertical direction, so as to achieve clean without dead spots. Of course, those who are familiar with this technique can also use a conveyor belt to move multiple objects to be cleaned 3, and then use multiple sets of laser cleaning equipment to clean all areas on the surface of the same object to be cleaned 3, and the cleaned objects move to the next The processing station repeats itself to achieve the purpose of quickly cleaning the surface of the object by laser irradiation.

Please refer to Figure 4, which is a diagram of the third embodiment of the laser cleaning equipment of the present invention. The optical adjustment device 2 includes an optical fiber 25, an optical lens group 26, and a focusing lens 27. The optical fiber 25 receives the The laser beam 11 of the laser light source 1 is transmitted to the optical lens group 26 and the focusing mirror 27, and the laser beam 11 is focused into a point-shaped laser spot 12 or a flat laser spot 12, and the optical mirror The group 26 and the focusing lens 27 can be grasped by the user in a hand-held manner, and the laser spot 12 can be moved manually to remove the surface of the object 3 to be cleaned.

The laser cleaning device of the present invention can achieve the advantages that: the laser beam 11 emitted by the laser light source 1 has an adjustable pulse width to adjust the power, thereby adjusting the processing depth of the terminal laser spot 12, if it is clean, it is more fragile. Products (eg eggs or mangoes, etc.) , You need to profile and configure short pulse parameters (the range is set from 1 to 250ns), so that the surface of the object to be cleaned 3 instantly generates a high-temperature plasma state, and removes surface bacteria, insect eggs, pesticide residues and filth. The contact cleaning method can reduce the indirect pollution problem, and because the cleaning method belongs to the superficial surface processing (the processing depth can be controlled from 1 to 1000 μm), the interior of the object to be cleaned 3 will not be affected by the laser spot 12 irradiation Damaged, and can maintain the quality of food, and then achieve perfect cleaning purpose.

From the above content, it can be seen that the present invention is a laser cleaning equipment applied to agricultural and livestock products, which includes a laser light source, an optical adjustment device and at least one object to be cleaned. The laser light source is based on a preset frequency, A preset pulse width and a preset processing depth are used for power adjustment, and a laser beam is output; the optical adjustment device receives the laser beam output by the laser light source, and adjusts the focus of the laser beam to a point The laser spot of shape, line or plane is output; the object to be cleaned is set in a preset plane or a preset jig, and receives the laser spot output by the optical adjustment device to irradiate the to-be-cleaned The surface of the object to be cleaned, and the surface of the object to be cleaned instantly generates a high-temperature plasma state, and removes bacteria, insect eggs, pesticide residues and filth attached to the surface. The aforementioned components achieve low cost, fewer processes, and A cleaning operation with short operation time and good cleaning effect, and the present invention is a non-contact cleaning method that can reduce indirect pollution problems. It has an excellent selling point in the agricultural and animal husbandry market. Therefore, a patent application was filed to seek patent protection.

The above detailed description is for a preferred and feasible embodiment of the present invention. However, the embodiment is not intended to limit the scope of the patent application of the present invention. All other equal changes and modifications made without departing from the spirit of the technique disclosed in the present invention All changes shall be included in the scope of patent covered by the present invention.

In summary, the above-mentioned laser cleaning equipment for agricultural and animal husbandry products of the present invention can indeed achieve its effects and purposes when used. Therefore, the present invention is an invention with excellent practicability and meets the requirements for patent applications. , Yan filed an application in accordance with the law, and I hope that the review committee will grant this case as soon as possible to protect the inventor’s hard-working invention. If there are any doubts, please send me instructions and the inventor will do my best to cooperate with you.

1: Laser light source

11: Laser beam

12: Laser spot

2: Optical adjustment device

3: Things to be cleaned

Claims (7)

A laser cleaning equipment applied to agricultural and animal husbandry products includes: a laser light source, which performs power adjustment according to a preset frequency, a preset pulse width and a preset processing depth, and outputs a laser beam. The preset frequency range of the light source is 1 to 5000 kHz, the preset pulse width range of the laser light source is 1 to 1000 ns, and the preset processing depth range of the laser light source is 1 to 1000 μm; an optical adjustment The device receives the laser beam output by the laser light source, and adjusts the focus of the laser beam to a point-shaped, linear or flat laser spot and then outputs it; and at least one object to be cleaned, which is set On a cleaning platform, and receive the laser spot output by the optical adjustment device to irradiate the surface of the object to be cleaned, and make the surface of the object to be cleaned instantly generate a high-temperature plasma state, and remove bacteria attached to the surface , Insect eggs, pesticide residues and filth. The laser cleaning equipment applied to agricultural and animal husbandry products as described in item 1 of the scope of patent application, wherein the optical adjustment device is composed of a beam expander group, a galvanometer group and a field lens. The beam expander group will The laser beam of the laser light source is expanded, and the expanded laser beam is transmitted to the galvanometer group to deflect the laser beam in the X-axis and Y-axis directions, and the laser beam is deflected through the field lens The beam is homogenized and focused, and a laser spot of a circular plane or a rectangular plane is generated to remove the surface of the object to be cleaned. According to the second item of the scope of patent application, the laser cleaning equipment applied to agricultural and livestock products, wherein the optical adjustment device further includes a cylindrical lens arranged between the beam expander lens group and the galvanometer lens group, Used to project the laser spot on the surface of the object to be cleaned from a circular plane Adjust to a straight shape. The laser cleaning equipment applied to agricultural and livestock products as described in item 1 of the scope of patent application, wherein the optical adjustment device is a galvanometer of a laser marking machine, and the galvanometer of a laser marking machine includes a galvanometer group And a field lens, the galvanometer group receives the laser beam from the laser light source and then deflects the laser beam in the X-axis and Y-axis directions, and homogenizes and focuses the laser beam through the field lens , And produce circular plane or rectangular plane and laser spot to clear the surface of the object to be cleaned. The laser cleaning equipment applied to agricultural and animal husbandry products as described in item 1 of the scope of patent application, wherein the optical adjustment device includes an optical fiber, an optical lens group and a focusing lens, and the optical fiber receives the laser from the laser light source. The beam is transmitted to the optical lens group and the focusing lens, and the laser beam is focused into a point-shaped laser spot or a plane laser spot to remove the surface of the object to be cleaned. The laser cleaning equipment applied to agricultural and animal husbandry products as described in item 1 of the scope of patent application, wherein when the object to be cleaned is a peel, the preset pulse width range of the laser light source is set to 1 to 150 ns, and the The preset processing depth of the laser light source is less than 50μm. For example, the laser cleaning equipment applied to agricultural and animal husbandry products described in item 1 of the scope of patent application, where the object to be cleaned is an eggshell, the second cleaning is required, and the first cleaning of the laser light source Set the pulse width range to 25 to 250ns; the second cleaning set the preset pulse width range of the laser light source to 1 to 25ns.

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