Layered sampling device for food quality detection

Abstract

The invention relates to the technical field of food detection, in particular to a stratified sampling device for food quality detection, which comprises an outer pipe, a first pipe fitting, a second pipe fitting and a tip, the outer pipe is used for being inserted into a grain pile, and the first pipe fitting, the second pipe fitting and the tip are mutually connected through a sampling box; an overturning plate for guiding grain particles into the outer pipe is arranged in the sampling box; and the inner pipe is used for driving the overturning plate to rotate, a sampling box is arranged at the position, corresponding to the sampling box, of the outer side of the inner pipe, and the sampling box is used for receiving the grain particles guided in by the overturning plate. According to the grain sampling device, the inner pipe is installed in the outer pipe in an up-down sliding mode, meanwhile, the sampling box is arranged on the outer pipe, after the inner pipe descends to a designated position, the overturning plate can be driven to overturn, granular grains are guided into the sampling box along the overturning plate, and a grain pile can be accurately sampled at a certain depth; sampling errors can be reduced, and the accuracy of detection results is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of food detection, and particularly to a layered sampling device for food quality detection. Background Art

[0002] Food detection is a testing technology for researching and evaluating food. During the entire food detection process, the sampling of food is also a crucial link. The quality of sampling determines whether the final detection data is accurate. For solid food sampling, a method of randomly sampling from different parts is generally used. For example, when detecting stored grain, workers need to hold a sampler and sample at various positions in the warehouse where the grain is stacked to timely control the quality of the grain. Usually, during the sampling process of stacked grain, workers need to hold a tubular sampler and insert it into the grain. After insertion, by rotating the tubular sampler left and right, the grain at the corresponding position falls into the sampling groove on the side of the tubular sampler. However, in actual use, since the slot on the side of the sampler is open, a small amount of grain particles will also enter the sampling groove during the insertion process. In this way, during the subsequent detection process, it is very easy to cause inaccurate detection results. Summary of the Invention

[0003] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides a layered sampling device for food quality detection, which can effectively solve the problem that in the prior art, during the sampling process of stacked grain, workers need to hold a tubular sampler and insert it into the grain. After insertion, by rotating the tubular sampler left and right, the grain at the corresponding position falls into the sampling groove on the side of the tubular sampler. However, in actual use, since the slot on the side of the sampler is open, a small amount of grain particles will also enter the sampling groove during the insertion process. In this way, during the subsequent detection process, it is very easy to cause inaccurate detection results.

[0004] To achieve the above purposes, the present invention is realized through the following technical solutions: The present invention provides a layered sampling device for food quality detection, including an outer tube for inserting into the grain pile, including a first pipe fitting, a second pipe fitting, and a tip. The first pipe fitting, the second pipe fitting, and the tip are respectively connected to each other through a sampling box. Inside the sampling box, there is a turning plate for guiding grain particles into the inside of the outer tube. An inner tube for driving the turning plate to rotate. A sampling box is arranged on the outer side of the inner tube corresponding to the position of the sampling box. The sampling box is used to receive the grain particles guided by the turning plate.

[0005] Further, the turning plate includes a vertical portion and an inclined portion. The vertical portion is located outside the sampling box and is used to block the sampling port on the side of the sampling box. The inclined portion is located inside the sampling box and slopes downward. The middle of the turning plate is rotatably connected to the sampling box, and a transmission component for driving the turning plate to turn is arranged inside the sampling box.

[0006] Further, the transmission component includes a telescopic rod rotatably installed below the turning plate. A piston cylinder for driving the telescopic rod to expand and contract is also arranged inside the sampling box. A piston rod is arranged inside the piston cylinder. A connecting pipe is arranged on the piston cylinder, and the other end of the connecting pipe is communicated with the inside of the telescopic rod. When the inner pipe moves downward, the piston rod on the piston cylinder is driven to retract, so that the telescopic rod drives the turning plate to turn.

[0007] Further, guard plates are arranged on both sides of the turning plate. Two flexible shielding plates are symmetrically arranged above the vertical portion of the turning plate. A sampling groove is arranged on the turning plate between the two flexible shielding plates, and the contour of the sampling groove is hemispherical.

[0008] Further, a limiting groove is arranged above the tip. A limiting post is fixedly installed inside the limiting groove. A limiting plate is slidably installed up and down inside the inner pipe. An inclined groove is arranged on one side of the limiting plate. A pressing member is slidably installed horizontally on the side surface of the inner pipe. When the inner pipe moves downward, the limiting post abuts against the bottom of the limiting plate, so that the limiting plate slides upward relative to the inner pipe. At this time, the inclined surface of the inclined groove drives the pressing member to press the piston rod on the piston cylinder.

[0009] Further, the top of the inner pipe is closed. A return spring is fixedly installed above the inner pipe. The lower part of the return spring abuts against the upper part of the limiting plate, and the return spring is used to drive the limiting plate to move downward relative to the inner pipe.

[0010] Further, the pressing member includes a sliding rod that slides through the inner pipe. An elastic member is sleeved outside the sliding rod located inside the inner pipe. The elastic member is used to drive the sliding rod to slide toward the inside of the inner pipe. A pressing plate is arranged on the outer side of the end of the sliding rod extending out of the inner pipe. The pressing plate is much larger than the end face of the piston rod of the piston cylinder. When the sliding rod moves downward following the inner pipe, the pressing plate abuts against the side surface of the piston rod.

[0011] Further, a guiding through hole is arranged on the inner pipe. A cover plate is arranged above the sampling box. A top rod that passes through the guiding through hole and is connected to the cover plate is arranged on the side surface of the limiting plate. When the limiting plate moves upward relative to the inner pipe, the top rod drives the cover plate to move upward synchronously.

[0012] Further, threaded sleeves are fixedly installed above and below the sampling box. External threads are provided at one end of the first pipe fitting, the second pipe fitting, and the tip facing the sampling box. The sampling box is docked with the first pipe fitting, the second pipe fitting, and the tip through the threaded sleeves.

[0013] The technical solution provided by the present invention has the following beneficial effects compared with the known public technologies: 1. In the present invention, by slidably installing the inner pipe up and down inside the outer pipe and setting a sampling box on the outer pipe. During use, first insert the outer pipe into the stacked grain pile, and then insert the inner pipe into the outer pipe. After the inner pipe descends to a specified position, it can drive the flip plate to flip, guiding the granular grain to be imported into the sampling box along the flip plate, enabling accurate sampling at a certain depth of the grain pile, reducing sampling errors, and ensuring the accuracy of the detection results.

[0014] 2. In the present invention, by setting the flip plate as a vertical part and an inclined part, when the flip plate flips, the distance between the upper part of the vertical part and the outside of the sampling box becomes larger, and at the same time, the lower end of the inclined part moves towards the middle of the outer pipe, making the lower end of the inclined part extend above the sampling box, facilitating the import of granular grain into the sampling box.

[0015] 3. In the present invention, by setting a piston cylinder inside the sampling box and a piston rod on the side of the piston cylinder. When the inner pipe moves downward to a specified position, the side of the inner pipe will squeeze the piston rod, causing the piston rod to retract. Then, the transmission medium inside the piston cylinder enters the inside of the telescopic rod along the connecting pipe, making the telescopic rod extend upward and driving the flip plate to flip.

[0016] 4. In the present invention, since a return spring is provided at the top of the inner pipe, during normal times, the limit plate moves downward relative to the inner pipe under the push of the return spring, enabling the cover plate to be pressed tightly on the top of the sampling box, ensuring the independence of each sampling sample and preventing grain particles from falling into the sampling box during the process of pulling out the inner pipe upward. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the overall cross-sectional view of the present invention; Figure 3 Schematic diagram of the internal structure of the sampling box of the present invention; Figure 4 Cross-sectional view of the internal structure of the sampling box of the present invention; Figure 5 Schematic perspective view of the internal structure of the sampling box of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the partially enlarged structure at position A; Figure 7 Schematic diagram of the internal structure of the inner tube of the present invention.

[0019] The reference numerals in the figure respectively represent: 1. Outer tube; 11. First pipe fitting; 12. Tip; 1201. Limit groove; 121. Limit post; 13. Second pipe fitting; 2. Inner tube; 201. Guide through hole; 21. Guide block; 22. Sampling box; 221. Cover plate; 23. Limit plate; 2301. Inclined groove; 231. Thumb rod; 24. Slide bar; 25. Elastic member; 26. Return spring; 3. Sampling box; 31. Flipping plate; 3101. Sampling groove; 311. Protective plate; 312. Shading plate; 32. Threaded sleeve; 33. Piston cylinder; 331. Connecting pipe; 34. Telescopic rod. Detailed implementation manners

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] Embodiment: A layered sampling device for food quality detection, as Figure 1 - Figure 4 shown, includes an outer tube 1 for inserting into the inside of a grain pile, including a first pipe fitting 11, a second pipe fitting 13, and a tip 12. The first pipe fitting 11, the second pipe fitting 13, and the tip 12 are respectively connected to each other through a sampling box 3. A flipping plate 31 for guiding grain particles into the inside of the outer tube 1 is arranged inside the sampling box 3; An inner tube 2 for driving the flipping plate 31 to rotate. A sampling box 22 is arranged on the outer side of the inner tube 2 corresponding to the position of the sampling box 3. The sampling box 22 is used for receiving the grain particles guided by the flipping plate 31.

[0023] In the present invention, by slidably installing an inner tube 2 up and down inside an outer tube 1, and simultaneously arranging a sampling box 3 on the outer tube 1. During use, first insert the outer tube 1 into the interior of a stacked grain pile, and then insert the inner tube 2 into the interior of the outer tube 1. After the inner tube 2 descends to a specified position, it can drive a turning plate 31 to turn, guiding granular grains to be introduced into the interior of the sampling box 3 along the turning plate 31, enabling accurate sampling at a certain depth of the grain pile, reducing sampling errors, and ensuring the accuracy of the test results.

[0024] It should be noted that a guiding rail is arranged on the inner wall of the first pipe fitting 11, and a guiding block 21 is arranged on the outer side of the inner tube 2, enabling the inner tube 2 to be centered and inserted into the interior of the outer tube 1.

[0025] Furthermore, as Figure 4 and Figure 5 shown, the turning plate 31 includes a vertical portion and an inclined portion. The vertical portion is located outside the sampling box 3 and is used to block a sampling port on the side of the sampling box 3. The inclined portion is located inside the sampling box 3 and slopes downward. The middle of the turning plate 31 is rotationally connected to the sampling box 3, and a transmission component for driving the turning plate 31 to turn is arranged inside the sampling box 3.

[0026] Among them, by setting the turning plate 31 as a vertical portion and an inclined portion, when the turning plate 31 turns, the distance between the upper part of the vertical portion and the outside of the sampling box 3 becomes larger, and at the same time, the lower end of the inclined portion moves towards the middle of the outer tube 1, enabling the lower end of the inclined portion to extend above the sampling box 22, facilitating the introduction of granular grains into the interior of the sampling box 22; It should be noted that the length of the inclined portion is greater than the length of the vertical portion. In a normal state, the inclined portion drives the vertical portion to abut against the outside of the sampling box 3.

[0027] Furthermore, as Figure 5 、 Figure 6 and Figure 7 shown, the transmission component includes a telescopic rod 34 rotatably installed below the turning plate 31. A piston cylinder 33 for driving the telescopic rod 34 to expand and contract is further arranged inside the sampling box 3. A piston rod is arranged inside the piston cylinder 33. A connecting pipe 331 is arranged on the piston cylinder 33, and the other end of the connecting pipe 331 is communicated with the inside of the telescopic rod 34. During the downward movement of the inner tube 2, the piston rod on the piston cylinder 33 retracts, causing the telescopic rod 34 to drive the turning plate 31 to turn.

[0028] Among them, by arranging a piston cylinder 33 inside the sampling box 3 and arranging a piston rod on the side of the piston cylinder 33, when the inner tube 2 moves downward to a specified position, the side of the inner tube 2 will squeeze the piston rod, causing the piston rod to retract. As a result, the transmission medium inside the piston cylinder 33 enters the inside of the telescopic rod 34 along the communication pipe 331, causing the telescopic rod 34 to extend upward and drive the turning plate 31 to turn; It should be noted that the specific structures of the piston cylinder 33 and the piston rod are common structures in the prior art and will not be elaborated here.

[0029] Furthermore, as Figure 4 and Figure 5 shown, guard plates 311 are arranged on both sides of the turning plate 31. Two flexible shielding plates 312 are symmetrically arranged above the vertical part of the turning plate 31. A sampling groove 3101 is arranged on the turning plate 31 between the two flexible shielding plates 312, and the contour of the sampling groove 3101 is hemispherical.

[0030] Among them, by arranging guard plates 311 on both sides of the turning plate 31, it is convenient to guide granular grains to roll upward along the turning plate 31 into the inside of the sampling box 22. By arranging flexible shielding plates 312 on the top of the turning plate 31, it is possible to prevent granular grains from accumulating in the gap between the upper part of the turning plate 31 and the sampling box 3, and avoid grains entering the inside of the outer tube 1 from these gaps during non-sampling processes. By arranging a sampling groove 3101 on the turning plate 31, it is easier for granular grains to fall from the middle of the turning plate 31 into the inside of the outer tube 1.

[0031] Furthermore, as Figure 4 and Figure 5 shown, a limiting groove 1201 is arranged above the tip 12, a limiting post 121 is fixedly installed inside the limiting groove 1201, a limiting plate 23 is slidably installed up and down inside the inner tube 2, an inclined groove 2301 is arranged on one side of the limiting plate 23, and a pressing member is slidably installed horizontally on the side of the inner tube 2. When the inner tube 2 moves downward, the limiting post 121 abuts against the bottom of the limiting plate 23, causing the limiting plate 23 to slide upward relative to the inner tube 2. At this time, the inclined surface of the inclined groove 2301 drives the pressing member to press the piston rod on the piston cylinder 33.

[0032] Among them, by arranging a limiting post 121 inside the tip 12, when the inner tube 2 moves downward, the lower part of the limiting plate 23 inside the inner tube 2 will abut against the upper part of the limiting post 121. Then, as the inner tube 2 continues to move downward, the limiting plate 23 will move upward relative to the inner tube 2, enabling the end surface of the inclined groove 2301 on the side of the limiting plate 23 to squeeze the pressing member, causing the pressing member to press the piston rod, and it is convenient to drive the turning plate 31 to turn.

[0033] Furthermore, asFigure 7 As shown, the top of the inner tube 2 is closed. Above the inner part of the inner tube 2, a return spring 26 is fixedly installed. Below the return spring 26, it abuts against the upper part of the limiting plate 23. The return spring 26 is used to drive the limiting plate 23 to move downward relative to the inner tube 2.

[0034] Among them, by arranging the return spring 26 inside the inner tube 2, after repeatedly pressing the inner tube 2 to drive the limiting plate 23 to move upward, it is convenient to drive the limiting plate 23 to move downward relative to the inner tube 2, and rapid reset can be achieved. Furthermore, as Figure 5 and Figure 6 shown, the pressing member includes a sliding rod 24 whose fragments slide through the inner tube 2. An elastic member 25 is sleeved outside the part of the sliding rod 24 located inside the inner tube 2. The elastic member 25 is used to drive the sliding rod 24 to slide towards the inside of the inner tube 2. A pressing plate is arranged on the outer side of the end of the sliding rod 24 extending out of the inner tube 2. The pressing plate is much larger than the piston rod end face of the piston cylinder 33. When the sliding rod 24 moves downward following the inner tube 2, the pressing plate abuts against the side of the piston rod.

[0035] Among them, by horizontally sliding the sliding rod 24 on the side of the inner tube 2, it is convenient to drive the sliding rod 24 to move horizontally by using the upward movement of the limiting plate 23, and then the piston rod can be pressed, so that the turning plate 31 is turned. During the sampling process by the staff, only by pressing the inner tube 2, accurate sampling operations can be carried out.

[0036] Furthermore, a guiding through hole 201 is arranged on the inner tube 2. Above the sampling box 22, a cover plate 221 is arranged. On the side of the limiting plate 23, a top rod 231 passing through the guiding through hole 201 and connected to the cover plate 221 is arranged. When the limiting plate 23 moves upward relative to the inner tube 2, the top rod 231 drives the cover plate 221 to move upward synchronously.

[0037] Among them, by arranging the cover plate 221 above the sampling box 22, it is convenient to seal the upper part of the sampling box 22 during normal times. When sampling is required, the cover plate 221 will move upward synchronously relative to the inner tube 2 following the limiting plate 23, and the opening above the sampling box 22 can be opened to ensure the accuracy of sampling; through the simple operation of pressing the inner tube 2, not only can the turning plate 31 be driven to rotate to make the grain particles enter the inside of the outer tube 1, but also the cover plate 221 above the sampling box 22 can be opened to ensure that the sampling box 22 is only opened during the sampling process.

[0038] It should be noted that since a return spring 26 is provided at the top of the inner tube 2, during normal times, the limit plate 23 moves downward relative to the inner tube 2 under the push of the return spring 26, which can make the cover plate 221 press tightly on the top of the sampling box 22, ensuring the independence of each sampling sample and preventing food particles from falling into the interior of the sampling box 22 during the process of pulling out the inner tube 2 upward.

[0039] Furthermore, threaded sleeves 32 are fixedly installed above and below the sampling box 3. External threads are provided at one ends of the first pipe fitting 11, the second pipe fitting 13, and the tip 12 facing the sampling box 3. The sampling box 3 is docked with the first pipe fitting 11, the second pipe fitting 13, and the tip 12 through the threaded sleeves 32.

[0040] Among them, by providing the threaded sleeves 32 on the sampling box 3, it is convenient to dock the sampling box 3 with the first pipe fitting 11, the second pipe fitting 13, and the tip 12, and it can be conveniently assembled and adjusted according to the sampling requirements.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A layered sampling device for food quality detection, characterized in that, Comprising: An outer tube (1) for insertion into the interior of a grain pile, including a first pipe fitting (11), a second pipe fitting (13) and a tip (12). The first pipe fitting (11), the second pipe fitting (13) and the tip (12) are respectively connected to each other through a sampling box (3). Inside the sampling box (3), there is a turning plate (31) for guiding grain particles into the interior of the outer tube (1); An inner tube (2) for driving the turning plate (31) to rotate. A sampling box (22) is arranged on the outer side of the inner tube (2) corresponding to the position of the sampling box (3). The sampling box (22) is used to receive the grain particles introduced by the turning plate (31).

2. The layered sampling device for food quality inspection according to claim 1, wherein, The turning plate (31) includes a vertical portion and an inclined portion. The vertical portion is located outside the sampling box (3) for blocking the sampling port on the side of the sampling box (3). The inclined portion is located inside the sampling box (3) and slopes downward. The middle of the turning plate (31) is rotatably connected to the sampling box (3). Inside the sampling box (3), there is a transmission component for driving the turning plate (31) to turn.

3. The layered sampling device for food quality detection according to claim 2, characterized in that, The transmission component includes a telescopic rod (34) rotatably installed below the turning plate (31). Inside the sampling box (3), there is also a piston cylinder (33) for driving the telescopic rod (34) to expand and contract. Inside the piston cylinder (33), there is a piston rod. A connecting pipe (331) is arranged on the piston cylinder (33). The other end of the connecting pipe (331) is communicated with the inside of the telescopic rod (34). When the inner tube (2) moves downward, the piston rod on the piston cylinder (33) retracts, causing the telescopic rod (34) to drive the turning plate (31) to turn.

4. The layered sampling device for food quality inspection according to claim 3, wherein, Both sides of the turning plate (31) are provided with guard plates (311). Above the vertical portion of the turning plate (31), two flexible shielding plates (312) are symmetrically arranged. On the turning plate (31) between the two flexible shielding plates (312), there is a sampling groove (3101). The contour of the sampling groove (3101) is hemispherical.

5. The layered sampling device for food quality inspection according to claim 4, characterized in that, Above the tip (12), there is a limit groove (1201). Inside the limit groove (1201), a limit post (121) is fixedly installed. Inside the inner tube (2), a limit plate (23) is slidably installed up and down. On one side of the limit plate (23), there is an inclined groove (2301). On the side of the inner tube (2), a pressing member is slidably installed horizontally. When the inner tube (2) moves downward, the limit post (121) abuts against the bottom of the limit plate (23), causing the limit plate (23) to slide upward relative to the inner tube (2). At this time, the inclined surface of the inclined groove (2301) drives the pressing member to press the piston rod on the piston cylinder (33).

6. The layered sampling device for food quality inspection according to claim 5, characterized in that, The top of the inner tube (2) is closed. Above the inner tube (2), a return spring (26) is fixedly installed. Below the return spring (26), it abuts against the upper part of the limit plate (23). The return spring (26) is used to drive the limit plate (23) to move downward relative to the inner tube (2).

7. A layered sampling device for food quality inspection according to claim 6, characterized in that, The pressing member includes a slide rod (24) through which debris slides through the inner tube (2). An elastic member (25) is sleeved outside the slide rod (24) inside the inner tube (2). The elastic member (25) is used to drive the slide rod (24) to slide towards the inside of the inner tube (2). A pressing plate is arranged on the outer side of one end of the slide rod (24) extending out of the inner tube (2). The pressing plate is much larger than the piston rod end face of the piston cylinder (33). When the slide rod (24) moves downward following the inner tube (2), the pressing plate abuts against the side of the piston rod.

8. The layered sampling device for food quality detection according to claim 7, characterized in that, A guiding through hole (201) is arranged on the inner tube (2). A cover plate (221) is arranged above the sampling box (22). A top rod (231) passing through the guiding through hole (201) and connected to the cover plate (221) is arranged on the side of the limiting plate (23). When the limiting plate (23) moves upward relative to the inner tube (2), the top rod (231) drives the cover plate (221) to move upward synchronously.

9. The layered sampling device for food quality detection according to claim 8, characterized in that, Threaded sleeves (32) are fixedly installed above and below the sampling box (3). External threads are arranged at one ends of the first pipe fitting (11), the second pipe fitting (13) and the tip (12) facing the sampling box (3). The sampling box (3) is mutually butted with the first pipe fitting (11), the second pipe fitting (13) and the tip (12) through the threaded sleeves (32).

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