Assembled handheld rice disease detection device

Abstract

The invention relates to the technical field of rice detection, in particular to an assembled handheld rice disease detection device which comprises a detection equipment body and further comprises a sampling assembly, the sampling assembly comprises an equipment cylinder arranged on the detection equipment body, a material suction pipe is arranged at the top of the equipment cylinder, and an air exhaust assembly is arranged in the middle of the equipment cylinder; a screen is slidably mounted in the equipment cylinder; the centrifugal disc is rotationally installed on the equipment cylinder and used for stirring the screen to vibrate, a first mesh plate and a second mesh plate which are attached to each other are arranged at the bottom end of the centrifugal disc, material leaking holes are formed in the first mesh plate and the second mesh plate, and a sample discharging pipe connected with the centrifugal disc in a sliding mode is arranged on the equipment cylinder. A circulating guide groove used for guiding the sample discharging pipe to slide in the vertical direction is formed in the bottom of the centrifugal disc, and the sample discharging pipe is used for extruding the first mesh plate and the second mesh plate to be staggered and enabling the leakage holes to coincide during ascending to achieve discharging. According to the invention, occasionality caused by excessive local materials in the sampling process of the materials is prevented, and the detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of rice detection technology, specifically to an assembled handheld rice disease detection device. Background Technology

[0002] In the agricultural sector, rice quality testing is a crucial step in ensuring food security and the quality of market circulation. Accurately testing the moisture content of rice and conducting quality analysis through proper sampling are of great significance for the grading, processing, and storage of rice.

[0003] Currently, when conducting moisture content testing on rice using traditional methods, operators use a measuring cup to scoop rice samples from the pile and then place the samples directly on the testing equipment for testing. This testing method has significant advantages such as ease of operation and portability of the testing equipment, and is quite common in practical applications.

[0004] However, during the sampling and testing of rice, the sampling environment is complex and diverse, and the condition of rice varies greatly under different conditions. For example, for rice that has just been mechanically harvested or has just been collected without any treatment, some impurities such as gravel and straw are often mixed in during the sampling process. If these samples mixed with impurities are used directly for testing, the presence of impurities will inevitably interfere with the accuracy of the test, resulting in the test results not being able to accurately reflect the true moisture content of the rice. On the other hand, traditional sampling methods usually only take samples from the same part of the rice pile, and the obtained samples are difficult to fully represent the average quality level of the entire batch of rice, thus affecting the accuracy and reliability of the test results. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an assembled handheld rice disease detection device, which can effectively solve the problem of insufficient detection accuracy in the sampling and detection process of the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an assembled handheld rice disease detection device, including a detection device body and a sampling component. The sampling component includes a device cylinder disposed on the detection device body, a suction pipe at the top of the device cylinder, and an air extraction component in the middle of the device cylinder. A screen located below the air extraction component is slidably installed inside the device cylinder. The centrifuge disc is rotatably mounted on the equipment cylinder and used to actuate the screen vibration. The bottom of the centrifuge disc is provided with a mesh plate one and a mesh plate two that fit together. Both mesh plates one and two are provided with material leakage holes, which are staggered. The equipment cylinder is provided with a sample discharge pipe that is slidably connected to the centrifuge disc. The bottom of the centrifuge disc is provided with a circulation guide groove for guiding the sample discharge pipe to slide in the vertical direction. When the sample discharge pipe rises, it squeezes the mesh plates one and two to misalign and make the material leakage holes overlap to achieve material discharge.

[0007] According to some embodiments of the present invention, the main body of the detection device is provided with an air extraction device. The air extraction assembly consists of an air extraction pipe and an air extraction ring. The air extraction end of the air extraction pipe is connected to the air extraction device. The air extraction ring is sleeved on the device cylinder and located above the screen. The air extraction assembly is used to extract the material dust that enters the device cylinder through the suction pipe.

[0008] According to some embodiments of the present invention, the bottom of the screen is provided with a plurality of protrusions arranged in a ring array, the top of the centrifugal disc is provided with a plurality of protrusions, and the screen is coaxially mounted with a connecting rod.

[0009] According to some embodiments of the present invention, a material distribution plate is further included, wherein a material leakage pipe is provided on the material distribution plate and extends outward through the equipment cylinder, and a movable platform for blocking the material leakage pipe is slidably installed on the material distribution plate, and the bottom of the movable platform is connected to a connecting rod.

[0010] According to some embodiments of the present invention, the centrifuge disc is funnel-shaped, and the included angle between the top and bottom is α, where 1° < α < 15°.

[0011] According to some embodiments of the present invention, the bottom of the first mesh plate is provided with a guide block 1, the bottom of the second mesh plate is provided with a guide block 2, and the guide block 1 and the guide block 2 are located on opposite sides. The bottom of the centrifuge disc is provided with a guide ring, and the circulation guide groove is located on the inner circumferential surface of the guide ring. The outer circumferential surface of the sample discharge pipe is provided with a guide post extending into the circulation guide groove.

[0012] According to some embodiments of the present invention, the device cylinder is provided with a fixed frame, the sample discharge tube is slidably connected to the fixed frame, and the sample discharge tube is provided with a limiting strip to restrict the relative rotation of the sample discharge tube and the fixed frame.

[0013] According to some embodiments of the present invention, the equipment cylinder is provided with a discharge trough, and the inner diameter of the discharge trough is less than or equal to the outer diameter of the centrifugal disc, and the outer diameter of the discharge trough is less than the outer diameter of the equipment cylinder.

[0014] According to some embodiments of the present invention, the bottom of the equipment cylinder is provided with an electromagnetic valve and a pressure sensor to block the discharge end of the discharge trough, and the electromagnetic valve and the pressure sensor are electrically connected. When the material in the discharge trough reaches a preset value, the pressure sensor sends a signal to the electromagnetic valve to open and discharge the material.

[0015] Beneficial effects The technical solution provided by this invention has the following advantages compared with the known prior art: 1. By using a suction pipe in conjunction with an air extraction assembly, dust and some straw in the rice are removed to prevent impurities from affecting the accuracy of subsequent testing. The special structure of the centrifuge disc and the centrifugal force generated by its rotation remove gravel from the screened material. At the same time, as the centrifuge disc rotates, the intermittent lifting and lowering of the sample discharge pipe compresses and moves the mesh plates one and two away from each other, connecting the leakage holes on the mesh plates one and two, and guiding some material into the main body of the testing equipment for testing. This prevents the material from being too abundant in one area during the sampling process and thus improves the accuracy of the testing. Second, through the special design of the movable platform and the distribution plate, the screen will continuously change the position between the movable platform and the discharge pipe when vibrating and screening materials. This will intermittently open the discharge pipe to discharge some materials and introduce some materials. This not only prevents the equipment cylinder from being quickly filled and affecting screening, and reduces the suction and dust removal pressure of the suction component, but also prevents the suction pipe from extracting too much material from a local area, which would lead to a large sampling limitation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a partial exploded view of the structure of the present invention; Figure 4 This is an exploded view of the connection between the centrifuge disc and the sample discharge tube of the present invention; Figure 5 This is a cross-sectional view showing the connection between the centrifuge disc and the sample discharge tube of the present invention. Figure 6 This is a cross-sectional view of the centrifuge disc of the present invention; Figure 7 This is a diagram showing the state changes of perforated plate one and perforated plate two when the sample discharge pipe of the present invention is displaced.

[0018] Reference numerals in the attached drawings: 1. Main body of the testing equipment; 2. Sampling component; 21. Equipment cylinder; 211. Discharge chute; 22. Vacuum assembly; 23. Suction pipe; 24. Distribution tray; 241. Movable table; 242. Leakage pipe; 25. Screen; 251. Connecting rod; 252. Protrusion one; 26. Centrifuge disc; 261. Protrusion two; 262. Mesh plate one; 2621. Guide block one; 263. Mesh plate two; 2631. Guide block two; 264. Guide ring; 2641. Circulation guide chute; 27. Sample discharge pipe; 271. Limiting strip; 272. Guide post; 28. Fixing frame. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to embodiments.

[0021] See attached document Figure 1-7 A handheld, assembled rice disease detection device includes a main body 1, which contains components for automatically detecting the moisture content of rice grains, such as a humidity sensor. This is prior art and well-known to those skilled in the art, and therefore will not be described in detail. It also includes: A sampling component 2 is used to acquire samples for testing. The sampling component 2 includes a device cylinder 21 mounted on the main body 1 of the testing equipment. The device cylinder 21 is detachably connected to the main body 1, for example, by threaded connection or snap-fit ​​connection. The specific connection method is not limited, as long as it allows for the detachment and connection of the device cylinder 21 and the main body 1. A suction pipe 23 is located at the top of the device cylinder 21, and an air extraction component 22 is located in the middle of the device cylinder 21. The suction pipe 23 is positioned at the top of the device cylinder 21. After the air extraction component 22 creates negative pressure inside the device cylinder 21, the material is drawn into the device cylinder 21 by moving the feed end of the suction pipe 23 for subsequent testing. The air extraction component 22 is used to draw the material into the device cylinder 21 through the suction pipe 23. Dust is extracted from the material. The main body 1 of the detection equipment is equipped with an air extraction device, which creates negative pressure inside the equipment cylinder 21 during operation. The air extraction component 22 consists of an air extraction pipe and an air extraction ring, with the air extraction end of the air extraction pipe connected to the air extraction device. The air extraction ring is sleeved on the equipment cylinder 21 and located above the screen 25. No filter screen is installed between the air extraction ring and the inside of the equipment cylinder 21. This serves two purposes: firstly, it removes dust and some lighter or less plump rice grains; secondly, it removes larger rice stalks and other debris to prevent them from affecting subsequent sampling and to improve sampling accuracy. The screen 25, located below the air extraction component 22, is slidably installed inside the equipment cylinder 21. The material entering the equipment cylinder 21 is screened through the screen 25 to prevent larger debris from entering subsequent detection steps. A centrifugal disc 26 is rotatably mounted on the equipment cylinder 21 and used to actuate the screen 25. The centrifugal disc 26 is driven to rotate by a drive device inside the main body of the detection equipment 1. The bottom of the screen 25 is provided with multiple sets of protrusions 252 arranged in a circular array, and the top of the centrifugal disc 26 is provided with multiple sets of protrusions 261. With the cooperation of protrusions 261 and 252, the screen 25 is continuously actuated to vibrate vertically as the centrifugal disc 26 rotates, thus assisting in the screening of rice. A connecting rod 251 is coaxially mounted on the screen 25. The bottom of the centrifugal disc 26 is provided with mesh plates 262 and 263 that fit together. Both sides of the mesh plates 263 that are far apart from each other are provided with elastic elements to keep the mesh plates 262 and 263 aligned. Both mesh plates 262 and 263 have discharge holes, which are staggered. That is, in the initial state, mesh plates 262 and 263 are aligned, but the discharge holes are staggered. The rice grains sieved by the screen 25 fall into the centrifuge tray 26 and do not immediately enter the main body 1 of the testing equipment from the sample discharge pipe 27 for testing. Because the centrifuge tray 26 is rotating rapidly at this time, centrifugal force is generated, causing the heavier material on the centrifuge tray 26 to be thrown off. The sample is discharged into the discharge trough 211. This operation removes sand and gravel from the rice, further improving the accuracy of subsequent testing. The equipment cylinder 21 is equipped with a sample discharge pipe 27 that is slidably connected to the centrifuge disc 26. The bottom of the centrifuge disc 26 is equipped with a circulation guide trough 2641 for guiding the sample discharge pipe 27 to slide vertically. The sample discharge pipe 27 is used to squeeze the perforated plate 1 262 and perforated plate 263 to misalign and make the leakage holes overlap when it rises, thus achieving material discharge. The bottom of perforated plate 1 262 is equipped with a guide block 2621, and the bottom of perforated plate 263 is equipped with a guide block 2631. The guide blocks 2621 and 2631 are located on opposite sides. The bottom of the centrifuge disc 26 is equipped with... There is a guide ring 264, and the circulation guide groove 2641 is located on the inner circumferential surface of the guide ring 264. The outer circumferential surface of the sample discharge pipe 27 is provided with a guide post 272 extending into the circulation guide groove 2641. When the centrifuge disc 26 rotates, it will drive the guide ring 264 to rotate synchronously. At this time, the circulation guide groove 2641, in conjunction with the guide post 272, will push the sample discharge pipe 27 to slide vertically along the axial direction, thereby squeezing the guide block 1 2621 and the guide block 2631 away from each other and retracting. At this time, the mesh plate 1 262 and the mesh plate 263 are misaligned, but the leakage holes on the mesh plate 1 262 and the mesh plate 263 are aligned, realizing the discharge and introducing part of the rice into the main body 1 of the testing equipment.

[0022] Furthermore, the centrifugal disc 26 is funnel-shaped, and the angle between the top and bottom is α, where 1° < α < 15°. By setting the height difference between the center and the edge of the centrifugal disc 26, the speed at which the rice is thrown out is slowed down. At the same time, since the weight of the same volume of gravel is greater than that of rice, the probability of the gravel being thrown out is greater, further improving the cleaning effect.

[0023] Furthermore, a fixed frame 28 is provided inside the equipment cylinder 21, the sample discharge pipe 27 is slidably connected to the fixed frame 28, and a limiting strip 271 is provided on the sample discharge pipe 27 to restrict the mutual rotation of the sample discharge pipe 27 and the fixed frame 28.

[0024] In addition, the equipment cylinder 21 is provided with a discharge trough 211, and the inner diameter of the discharge trough 211 is less than or equal to the outer diameter of the centrifugal disc 26. The outer diameter of the discharge trough 211 is less than the outer diameter of the equipment cylinder 21. The bottom of the equipment cylinder 21 is provided with a solenoid valve and a pressure sensor that block the discharge end of the discharge trough 211. The solenoid valve and the pressure sensor are electrically connected. When the material in the discharge trough 211 reaches a preset value, the pressure sensor sends a signal to the solenoid valve to open and discharge the material.

[0025] In the above technical solution, after the material enters the equipment cylinder 21 from the suction pipe 23, the rice has a certain travel distance from top to bottom, and with the help of the suction component 22, dust and some straw in the rice can be removed to prevent impurities from affecting the subsequent detection accuracy. At the same time, after the rice falls onto the centrifuge disc 26 through the screen 25, the special structure of the centrifuge disc 26 and the centrifugal force generated by its rotation remove the gravel in the screened material, further preventing impurities from affecting the detection results and improving the detection accuracy. On the other hand, the rotation of the centrifuge disc 26, in conjunction with the guide ring 264 and the sample discharge pipe 27, causes the sample discharge pipe 27 to rise intermittently. During the rise of the sample discharge pipe 27, it will squeeze and cause the mesh plate 1 262 and the mesh plate 263 to move away from each other, thereby connecting the leakage holes on the mesh plate 1 262 and the mesh plate 263, and guiding some material into the detection equipment body 1 for detection, preventing the local material from being excessively random during the sampling process.

[0026] It is worth noting that the equipment also includes a distribution plate 24, which is truncated cone-shaped. The distribution plate 24 is provided with a material leakage pipe 242 that extends outward through the equipment cylinder 21. A movable platform 241 for blocking the material leakage pipe 242 is slidably installed on the distribution plate 24. The bottom of the movable platform 241 is connected to the connecting rod 251. The movable platform 241 is coaxial with the distribution plate 24. While the screen 25 vibrates and screens the material, the movable platform 241 is continuously pushed by the connecting rod 251. When the movable platform 241 is in a low position, the material leakage pipe 242 is leaked out. At this time, part of the material entering from the suction pipe 23 will be discharged from the equipment cylinder 21 through the guide ring 264. When the movable platform 241 is lifted, it will block the material leakage pipe 242 and then guide the material onto the screen 25.

[0027] In the above technical solution, the special arrangement of the movable table 241 and the material distribution plate 24 allows the screen 25 to continuously change the position between the movable table 241 and the material leakage pipe 242 when vibrating and screening materials. This intermittently opens the material leakage pipe 242 to discharge some materials and introduce others. On the one hand, this prevents the equipment cylinder 21 from being quickly filled, affecting the screening and reducing the suction and dust removal pressure of the suction component 22. On the other hand, it further prevents the suction pipe 23 from extracting too much material from a local area, which would lead to a large sampling limitation.

[0028] Working Principle: Upon starting the main body 1 of the testing equipment, the rice grains are drawn into the equipment cylinder 21 using the suction assembly 22 and the suction pipe 23. As the rice grains fall, they pass through the distribution plate 24 and enter the screen 25 for sieving. The suction assembly 22 again removes dust and some straw from the rice grains. After passing through the screen 25, the rice grains fall onto the centrifugal disc 26. The special structure of the centrifugal disc 26 and the centrifugal force generated by its rotation remove gravel from the sieved material. The rotation of the centrifugal disc 26 causes the screen 25 to vibrate, accelerating the sieving process. Through the special design of the movable platform 241 and the distribution plate 24, the position between the movable platform 241 and the discharge pipe 242 continuously changes during the vibrating sieving process, thereby... Intermittently open the discharge pipe 242 to discharge some material, preventing the equipment cylinder 21 from being quickly filled and affecting the screening, reducing the suction and dust removal pressure of the suction component 22, and preventing the suction pipe 23 from extracting too much material from a localized area. Finally, when the centrifuge disc 26 rotates, it works with the guide ring 264 and the sample discharge pipe 27 to make the sample discharge pipe 27 rise intermittently. During the rise of the sample discharge pipe 27, it will squeeze and cause the mesh plate 1 262 and the mesh plate 263 to move away from each other, thereby connecting the discharge holes on the mesh plate 1 262 and the mesh plate 263, and introducing some material into the main body of the testing equipment 1 for testing. After the testing chamber in the main body of the testing equipment 1 is full, operate the button on the main body of the testing equipment 1 to perform the test.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An assembled handheld rice disease detection device, comprising a main body of the detection device (1), characterized in that, Also includes: Sampling component (2), the sampling component (2) includes a device cylinder (21) disposed on the main body (1) of the detection device, a suction pipe (23) is provided at the top of the device cylinder (21), and an air extraction component (22) is provided in the middle of the device cylinder (21). A screen (25) located below the air extraction component (22) is slidably installed inside the device cylinder (21). And a centrifugal disc (26) is rotatably mounted on the equipment cylinder (21) and used to actuate the screen (25). The bottom of the centrifugal disc (26) is provided with a mesh plate one (262) and a mesh plate two (263) that fit together. Both the mesh plate one (262) and the mesh plate two (263) are provided with leakage holes, and the leakage holes are staggered. The equipment cylinder (21) is provided with a sample discharge pipe (27) that is slidably connected to the centrifugal disc (26). The bottom of the centrifugal disc (26) is provided with a circulation guide groove (2641) for guiding the sample discharge pipe (27) to slide in the vertical direction. The sample discharge pipe (27) is used to squeeze the mesh plate one (262) and the mesh plate two (263) to misalign and make the leakage holes overlap when it rises to achieve material discharge.

2. The assembled handheld rice disease detection device according to claim 1, characterized in that, The main body (1) of the detection equipment is equipped with an air extraction device. The air extraction component (22) consists of an air extraction pipe and an air extraction ring. The air extraction end of the air extraction pipe is connected to the air extraction device. The air extraction ring is sleeved on the equipment cylinder (21) and located above the screen (25). The air extraction component (22) is used to extract the material dust that enters the equipment cylinder (21) through the suction pipe (23).

3. The assembled handheld rice disease detection device according to claim 1, characterized in that, The bottom of the screen (25) is provided with a plurality of protrusions (252) arranged in a ring array, and the top of the centrifugal disc (26) is provided with a plurality of protrusions (261). The screen (25) is coaxially mounted with a connecting rod (251).

4. The assembled handheld rice disease detection device according to claim 3, characterized in that, It also includes a material distribution plate (24), on which a material leakage pipe (242) extends outward through the equipment cylinder (21), and a movable platform (241) for blocking the material leakage pipe (242) is slidably installed on the material distribution plate (24), and the bottom of the movable platform (241) is connected to the connecting rod (251).

5. The assembled handheld rice disease detection device according to claim 1, characterized in that, The centrifuge disc (26) is funnel-shaped, and the angle between the top and bottom is a, where 1° < a < 15°.

6. The assembled handheld rice disease detection device according to claim 1, characterized in that, The bottom of the first mesh plate (262) is provided with a guide block (2621), the bottom of the second mesh plate (263) is provided with a guide block (2631), and the first guide block (2621) and the second guide block (2631) are located on opposite sides. The bottom of the centrifuge disc (26) is provided with a guide ring (264), and the circulation guide groove (2641) is located on the inner circumferential surface of the guide ring (264). The outer circumferential surface of the sample discharge pipe (27) is provided with a guide post (272) extending into the circulation guide groove (2641).

7. The assembled handheld rice disease detection device according to claim 1, characterized in that, The device cylinder (21) is provided with a fixed frame (28), the sample discharge pipe (27) is slidably connected to the fixed frame (28), and the sample discharge pipe (27) is provided with a limiting strip (271) to restrict the mutual rotation of the sample discharge pipe (27) and the fixed frame (28).

8. The assembled handheld rice disease detection device according to claim 1, characterized in that, The equipment cylinder (21) is provided with a discharge trough (211), and the inner diameter of the discharge trough (211) is less than or equal to the outer diameter of the centrifugal disc (26), and the outer diameter of the discharge trough (211) is less than the outer diameter of the equipment cylinder (21).

9. The assembled handheld rice disease detection device according to claim 8, characterized in that, The bottom of the equipment cylinder (21) is equipped with an electromagnetic valve and a pressure sensor that block the discharge end of the discharge trough (211). The electromagnetic valve and the pressure sensor are electrically connected. When the material in the discharge trough (211) reaches a preset value, the pressure sensor sends a signal to the electromagnetic valve to open and discharge the material.

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