Intelligent macadamia nut screening equipment

Abstract

The utility model relates to intelligent macadamia nut screening equipment, which belongs to the field of nut screening and comprises a base, a screening mechanism for conveying and screening nuts is arranged on the upper surface of the base, and a removing mechanism for removing screened bad nuts is arranged on the back wall of an inner cavity of the screening mechanism. According to the intelligent macadamia nut screening equipment, the screening mechanism is arranged, nuts enter a discharging hopper through a discharging opening of a nut storage tank and then enter a discharging pipe to be conveyed, when the nuts move on a conveying belt, the nuts are located below a detection cover to be subjected to X-ray detection, an X-ray probe scans the nuts, and an image analyzer is matched, so that the nuts are accurately screened; according to the nut sorting device, the sorting mechanism is used for sorting nuts to determine whether the nuts meet the quality standard or not, when it is detected that the interiors of the nuts have insect pests, mildew or holes, bad nuts are removed in cooperation with the removing mechanism, automatic conveying and screening of the nuts are achieved, the screening mechanism can efficiently recognize and remove the nuts with internal defects through the X-ray probe and the image analysis technology, and therefore the quality of final products is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of nut screening, in particular to an intelligent screening device for macadamia nuts. Background Art

[0002] Nuts, also known as shell fruits, are mostly the cotyledons or endosperm of plant seeds. They have high nutritional value, especially macadamia nuts, whose kernels are rich in various unsaturated fatty acids, proteins, mineral elements and vitamins. They have important nutritional value and health benefits. They enjoy the reputation of "Queen of Dried Fruits" and "King of Nuts in the World" and are deeply loved by people. The development and deep processing of most nuts require screening and grading.

[0003] For example, a macadamia nut screening machine disclosed in Chinese patent announcement number (CN208695517U) belongs to the field of macadamia nut screening equipment. The macadamia nut screening machine of the utility model comprises a screen drum, a bracket, a discharge hopper and a feed hopper; the screen drum is arranged on the bracket; the feed hopper is arranged on the top of the bracket and connected to one end of the screen drum; the discharge hopper is arranged at the end of the screen drum; the screen drum is arranged on the bracket at a certain inclination angle; a collecting baffle is arranged below the screen drum, and the collecting baffle is inclined, and the inclination direction is opposite to that of the screen drum; a fruit collecting box is arranged below the bracket, and the fruit collecting box is connected to the collecting baffle; a drive box is arranged on the side of the bracket, and a drive motor is arranged in the drive box; the drive motor is connected to the screen drum through a belt and a pulley. The structural design of the utility model is reasonable, and multiple layers and multiple screening channels are arranged, which can realize the accurate screening of macadamia nuts. At the same time, it occupies a small area, has a good screening effect and high screening efficiency.

[0004] However, as in the above patent, there is still a problem of poor screening effect for macadamia nuts. As in the above patent and other prior arts, when screening nuts, sieves of different specifications are set to make the nuts fall from different sieve holes to screen the fruit shape. However, this method is not convenient for screening inferior nuts such as empty nuts, worm nuts and moldy nuts. Screening the fruit shape alone will result in a lot of bad nuts being mixed in, affecting the quality of the nuts, which is not conducive to later processing and sales. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides an intelligent screening device for macadamia nuts, which has the advantages of good screening effect on nuts, etc., and solves the problem of poor screening effect on macadamia nuts in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an intelligent screening device for macadamia nuts, comprising a base, the upper surface of the base is provided with a screening mechanism for conveying and screening nuts, and the back wall of the inner cavity of the screening mechanism is provided with a rejection mechanism for rejecting the screened bad nuts;

[0007] The screening mechanism includes a support frame, a nut storage tank, a lower hopper, a discharge pipe, a conveyor belt, a detection cover and two X-ray probes. The support frame is fixed to the upper surface of the base, the nut storage tank is fixed to the upper surface of the support frame, a discharge port is opened on the lower surface of the nut storage tank, and the lower hopper is fixed to the inner wall of the discharge port, the discharge pipe is connected to the bottom end of the lower hopper, the conveyor belt is fixed to the upper surface of the base and is located below the discharge pipe, the detection cover is fixed to the upper surface of the conveyor belt, and the two X-ray probes are respectively fixed to the left and right sides of the inner top wall of the detection cover.

[0008] Furthermore, a feed port and a discharge port are respectively provided on the left and right sides of the detection cover, and the distance between the inner walls on the front and rear sides of the feed port and the discharge port is equal to the width of the conveyor belt.

[0009] Furthermore, the outer side of the X-ray probe is electrically connected to an image analyzer via a wire, and nut outflow ports are provided on both the left and right sides of the discharge pipe.

[0010] Furthermore, the number of the lower hopper and the discharge pipe is no less than two, and they are evenly distributed along the length direction of the nut storage tank, and a conveyor belt is provided below several of the discharge pipes.

[0011] Furthermore, the rejection mechanism includes a fixed plate, a plurality of pneumatic nozzles, a plurality of control tubes, an air tank, an air pump, an exhaust pipe, an air supply pipe and a diversion pipe. The fixed plate is fixed to the back wall of the inner cavity of the detection hood. The plurality of pneumatic nozzles are evenly distributed and fixed along the length direction of the fixed plate. The plurality of control tubes are respectively connected to the plurality of pneumatic nozzles. The air tank is fixed to the upper surface of the detection hood. The air pump is fixed to the left side of the upper surface of the detection hood. One end of the exhaust pipe is connected to the air inlet end of the air pump, and the other end of the exhaust pipe is connected to the air tank. One end of the air supply pipe is connected to the air outlet end of the air pump, and the other end of the air supply pipe is connected to the diversion pipe. The outer side of the diversion pipe is connected to the top ends of the plurality of control tubes.

[0012] Furthermore, solenoid valves are fixed on the outer sides of several of the control tubes, and the lower surface of the pneumatic nozzle and the upper surface of the conveyor belt are located in the same horizontal plane.

[0013] Furthermore, a collecting cover corresponding to the position of the pneumatic nozzle is fixed on the front of the conveyor belt, and a bad fruit collection box is placed on the upper surface of the base and below the collecting cover.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The intelligent screening equipment for macadamia nuts is equipped with a screening mechanism. The nuts pass through the outlet of the nut storage tank into the lower hopper and then into the discharge pipe, ready to be transported. The conveyor belt is responsible for conveying the nuts forward. When the nuts move on the conveyor belt, they are located under the detection cover and ready for X-ray inspection. The X-ray probe scans the nuts and cooperates with the image analyzer to determine whether the nuts meet the quality standards. When defects such as insect pests, mildew or holes are detected inside the nuts, the bad nuts are removed with the removal mechanism, realizing the automatic transportation and screening of nuts. Through the X-ray probe and image analysis technology, the screening mechanism can efficiently identify and remove nuts with internal defects, thereby ensuring the quality of the final product.

[0016] 2. The intelligent screening equipment for macadamia nuts is equipped with a rejection mechanism. When the X-ray probe detects defects inside the nuts, it will output a rejection signal. The rejection signal activates the solenoid valve, which controls the airflow in the control tube connected to the pneumatic nozzle. The activation of the solenoid valve causes the pneumatic nozzle to spray airflow, which directly acts on the nuts identified as bad fruits, blowing the bad fruits off the conveyor belt. The blown-off bad fruits fall into the collection hood corresponding to the position of the pneumatic nozzle, which is used to collect all the rejected bad fruits. This process realizes the automatic rejection of bad fruits, improves screening efficiency and reduces labor costs. By precisely controlling the solenoid valve and pneumatic nozzle, it ensures that only nuts identified as bad fruits are rejected, while good nuts continue to move along the conveyor belt and enter the next processing stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the screening mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the discharge pipe of the utility model;

[0020] Figure 4 It is a schematic diagram of the rejection mechanism of the utility model.

[0021] In the figure: 1 base, 2 screening mechanism, 21 support frame, 22 nut storage tank, 23 lower hopper, 24 discharge pipe, 25 conveyor belt, 26 detection cover, 27 X-ray probe, 28 nut outflow port, 3 rejection mechanism, 31 fixed plate, 32 pneumatic nozzle, 33 control pipe, 34 gas tank, 35 air pump, 36 exhaust pipe, 37 air supply pipe, 38 diversion pipe, 39 solenoid valve, 310 collection cover, 311 bad fruit collection box. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 In this embodiment, an intelligent screening device for macadamia nuts includes a base 1, an upper surface of the base 1 is provided with a screening mechanism 2 for conveying and screening nuts, and a back wall of the inner cavity of the screening mechanism 2 is provided with a rejection mechanism 3 for rejecting the screened bad fruits.

[0024] See also Figure 2-3 In order to efficiently screen macadamia nuts, the screening mechanism 2 in this embodiment includes a support frame 21, a nut storage tank 22, a lower hopper 23, a discharge pipe 24, a conveyor belt 25, a detection cover 26 and two X-ray probes 27. The support frame 21 is fixed to the upper surface of the base 1, the nut storage tank 22 is fixed to the upper surface of the support frame 21, a discharge port is provided on the lower surface of the nut storage tank 22, and the lower hopper 23 is fixed to the inner wall of the discharge port. The nuts are first stored in the nut storage tank 22 and prepared for screening. Then the nuts enter the lower hopper 23 through the discharge port of the nut storage tank 22, the discharge pipe 24 is connected to the bottom end of the lower hopper 23, and the conveyor belt 25 is connected to the base 1. The upper surface of the detection cover 26 is fixed and located below the discharge pipe 24. The detection cover 26 is fixed to the upper surface of the conveyor belt 25. The conveyor belt 25 is responsible for conveying the nuts forward. When the nuts move on the conveyor belt 25, they are located below the detection cover 26 and are ready for X-ray detection. Two X-ray probes 27 are respectively fixed to the left and right sides of the inner top wall of the detection cover 26. The left X-ray probe 27 scans the nuts. The X-ray probe 27 is connected to an image analyzer, which analyzes the X-ray image to determine whether the nuts meet the quality standards. When defects are detected inside the nuts, such as insect pests, mildew or holes, the bad fruits are removed in cooperation with the removal mechanism 3, and then the right X-ray probe 27 will re-inspect the nuts.

[0025] In this embodiment, a feed port and a discharge port are respectively provided on the left and right sides of the detection cover 26, and the distance between the inner walls on the front and rear sides of the feed port and the discharge port is equal to the width of the conveyor belt 25. The outer side of the X-ray probe 27 is electrically connected to an image analyzer through a wire. Nut flow outlets 28 are provided on the left and right sides of the discharge pipe 24. Nuts enter the discharge pipe 24 from the lower hopper 23 and are ready to be transported. The nuts are vertically stacked in the discharge pipe 24 due to the limitation of the inner diameter of the discharge pipe 24. The nuts at the bottom of the discharge pipe 24 will contact the conveyor belt 25, and the movement of the conveyor belt 25 will drive the nuts at the bottom to be brought out of the nut flow outlet 28, and then the nuts above fall and repeat this operation. The number of the lower hopper 23 and the discharge pipe 24 is not less than two, and they are evenly distributed along the length direction of the nut storage tank 22. Conveyor belts 25 are provided under several discharge pipes 24, and nuts can be screened synchronously in multiple columns to improve screening efficiency.

[0026] See also Figure 4 In order to remove the bad fruits screened out, the removal mechanism 3 in this embodiment includes a fixed plate 31, a plurality of pneumatic nozzles 32, a plurality of control tubes 33, an air tank 34, an air pump 35, an air extraction pipe 36, an air delivery pipe 37 and a shunt pipe 38. The fixed plate 31 is fixed to the back wall of the inner cavity of the detection cover 26, the plurality of pneumatic nozzles 32 are evenly distributed and fixed along the length direction of the fixed plate 31, the plurality of control tubes 33 are respectively connected to the plurality of pneumatic nozzles 32, the air tank 34 is fixed to the upper surface of the detection cover 26, and the air pump 35 is connected to the air supply pipe 37. The pump 35 is fixed to the left side of the upper surface of the detection cover 26, one end of the exhaust pipe 36 is connected to the air inlet end of the air pump 35, and the other end of the exhaust pipe 36 is connected to the air tank 34, one end of the air supply pipe 37 is connected to the air outlet end of the air pump 35, and the other end of the air supply pipe 37 is connected to the diversion pipe 38, the outer side of the diversion pipe 38 is connected to the top end of several control pipes 33, the air pump 35 cooperates with the air tank 34 to provide sufficient compressed air for use through the exhaust pipe 36, the air supply pipe 37 and the diversion pipe 38 to ensure the continuous operation of the rejection mechanism 3.

[0027] In this embodiment, a solenoid valve 39 is fixed on the outside of several control tubes 33. When the X-ray probe 27 detects defects inside the nuts, it will output a rejection signal, which activates the solenoid valve 39. The lower surface of the pneumatic nozzle 32 is located at the same horizontal plane as the upper surface of the conveyor belt 25. The solenoid valve 39 controls the airflow in the control tube 33 connected to the pneumatic nozzle 32. The activation of the solenoid valve 39 causes the pneumatic nozzle 32 to spray airflow, which directly acts on the nuts identified as bad nuts, and removes the bad nuts from the conveyor belt 25. 5, a collecting hood 310 corresponding to the position of the pneumatic nozzle 32 is fixed on the front of the conveyor belt 25, and a bad fruit collecting box 311 is placed on the upper surface of the base 1 and below the collecting hood 310. The bad fruits blown off fall into the collecting hood 310 corresponding to the position of the pneumatic nozzle 32, which is used to collect all the rejected bad fruits. By accurately controlling the solenoid valve 39 and the pneumatic nozzle 32, it is ensured that only nuts identified as bad fruits are rejected, while good nuts continue to move along the conveyor belt 25 to enter the next processing stage.

[0028] The working principle of the above embodiment is:

[0029] (1) When using macadamia nuts for efficient screening, the nuts are first stored in a nut storage tank 22, ready for screening. Then, the nuts enter the lower hopper 23 through the discharge port of the nut storage tank 22. The nuts enter the discharge pipe 24 from the lower hopper 23, ready for transportation. In the discharge pipe 24, the nuts are vertically stacked due to the inner diameter size limitation of the discharge pipe 24. The nuts at the bottom of the discharge pipe 24 will contact the conveyor belt 25. The movement of the conveyor belt 25 drives the nuts at the bottom to be taken out from the nut outlet 28, and then the nuts above fall and repeat this operation. The conveyor belt 25 is responsible for conveying the nuts forward. When the nuts move on the conveyor belt 25, they are located under the detection cover 26, ready for X-ray inspection. The left X-ray probe 27 scans the nuts. The X-ray probe 27 is connected to an image analyzer, which analyzes the X-ray image to determine whether the nuts meet the quality standards. When the nuts are found to have defects such as insects, mildew or cavities, the bad nuts are removed in cooperation with the rejection mechanism 3. Then, the right X-ray probe 27 will re-inspect the nuts.

[0030] (2) When the selected bad fruits are to be rejected for use, when the X-ray probe 27 detects defects inside the nuts, it will output a rejection signal. The air pump 35 cooperates with the air tank 34 to provide sufficient compressed air through the exhaust pipe 36, the air supply pipe 37 and the diversion pipe 38 to ensure the continuous operation of the rejection mechanism 3. The rejection signal activates the solenoid valve 39. The solenoid valve 39 controls the air flow in the control pipe 33 connected to the pneumatic nozzle 32. The activation of the solenoid valve 39 causes the pneumatic nozzle 32 to spray air. The air flow directly acts on the nuts identified as bad fruits, blowing the bad fruits off the conveyor belt 25. The blown-off bad fruits fall into the collection hood 310 corresponding to the position of the pneumatic nozzle 32, which is used to collect all the rejected bad fruits. By accurately controlling the solenoid valve 39 and the pneumatic nozzle 32, it is ensured that only the nuts identified as bad fruits are rejected, while the good nuts continue to move along the conveyor belt 25 and enter the next processing stage.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. An intelligent screening device for macadamia nuts, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a screening mechanism (2) for conveying and screening nuts, and the back wall of the inner cavity of the screening mechanism (2) is provided with a rejection mechanism (3) for rejecting the screened bad nuts; The screening mechanism (2) comprises a support frame (21), a nut storage tank (22), a lower hopper (23), a discharge pipe (24), a conveyor belt (25), a detection cover (26) and two X-ray probes (27); the support frame (21) is fixed to the upper surface of the base (1); the nut storage tank (22) is fixed to the upper surface of the support frame (21); a discharge port is provided on the lower surface of the nut storage tank (22); the lower hopper (23) is fixed to the inner wall of the discharge port; the discharge pipe (24) is connected to the bottom end of the lower hopper (23); the conveyor belt (25) is fixed to the upper surface of the base (1) and is located below the discharge pipe (24); the detection cover (26) is fixed to the upper surface of the conveyor belt (25); and the two X-ray probes (27) are respectively fixed to the left and right sides of the inner top wall of the detection cover (26).

2. The intelligent screening device for macadamia nuts according to claim 1, characterized in that: The detection cover (26) is provided with a feed inlet and a discharge outlet on the left and right sides respectively, and the distance between the inner walls on the front and rear sides of the feed inlet and the discharge outlet is equal to the width of the conveyor belt (25).

3. The intelligent screening device for macadamia nuts according to claim 1, characterized in that: The outer side of the X-ray probe (27) is electrically connected to an image analyzer via a wire, and nut outflow outlets (28) are provided on both the left and right sides of the discharge pipe (24).

4. The intelligent screening device for macadamia nuts according to claim 1, characterized in that: The number of the lower hopper (23) and the discharge pipe (24) is no less than two, and they are evenly distributed along the length direction of the nut storage tank (22), and a conveyor belt (25) is provided below a plurality of the discharge pipes (24).

5. The intelligent screening device for macadamia nuts according to claim 1, characterized in that: The rejection mechanism (3) comprises a fixed plate (31), a plurality of pneumatic nozzles (32), a plurality of control tubes (33), an air tank (34), an air pump (35), an air extraction tube (36), an air supply tube (37) and a flow distribution tube (38); the fixed plate (31) is fixed to the back wall of the inner cavity of the detection cover (26); the plurality of pneumatic nozzles (32) are evenly distributed and fixed along the length direction of the fixed plate (31); the plurality of control tubes (33) are respectively connected to the plurality of pneumatic nozzles (32); The gas tank (34) is fixed to the upper surface of the detection cover (26), the air pump (35) is fixed to the left side of the upper surface of the detection cover (26), one end of the air extraction pipe (36) is connected to the air inlet end of the air pump (35), and the other end of the air extraction pipe (36) is connected to the gas tank (34), one end of the air supply pipe (37) is connected to the air outlet end of the air pump (35), and the other end of the air supply pipe (37) is connected to the shunt pipe (38), and the outer side of the shunt pipe (38) is connected to the top ends of a plurality of control pipes (33).

6. The intelligent screening device for macadamia nuts according to claim 5, characterized in that: Electromagnetic valves (39) are fixed on the outer sides of the plurality of control tubes (33), and the lower surface of the pneumatic nozzle (32) and the upper surface of the conveyor belt (25) are located at the same horizontal plane.

7. The intelligent screening device for macadamia nuts according to claim 5, characterized in that: A collecting hood (310) corresponding to the position of the pneumatic nozzle (32) is fixed on the front of the conveyor belt (25), and a bad fruit collecting box (311) is placed on the upper surface of the base (1) and below the collecting hood (310).

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