Grain moisture detection device

Abstract

The utility model belongs to the technical field of grain detection equipment, and particularly relates to a grain moisture detection device which comprises a detection box and a microwave moisture detector, microwave sensors of the microwave moisture detector are symmetrically arranged on the two sides of the detection box, a baffle is arranged above the microwave moisture detector, and the microwave moisture detector is arranged above the baffle. A material receiving plate is arranged below the microwave moisture detector, push-pull openings are formed in the positions, corresponding to the baffle and the material receiving plate, of the detection box, and the baffle and the material receiving plate are both arranged in the push-pull openings and installed on the detection box through two push-pull assemblies in a push-pull mode. Through a large number of experiments, the applicant finds that after grains fall into the detection box and the upper part and the lower part of a grain area detected by the microwave moisture detector are shielded, a detection space is formed between the baffle and the material receiving plate, the detected grain moisture content of the grains in the detection space is consistent with the actual grain content, and the detected grain moisture content is more accurate.

Description

Technical Field

[0001] This utility model belongs to the technical field of grain testing equipment, specifically relating to a grain moisture detection device. Background Technology

[0002] Grain testing technology is of great significance in agricultural production and the food industry. When testing grains, it is necessary to detect the moisture content of the grains. Chinese invention patent application number 202510767985.9 discloses a smart grain testing device, which uses a microwave moisture detector to detect the moisture content of grains in a leakage box. However, the applicant found in experiments that the moisture content of grains measured by this method has a certain deviation from the actual moisture content of the grains. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a grain moisture detection device that can more accurately measure the moisture content of grains.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a grain moisture detection device, comprising a detection box and a microwave moisture detector, wherein microwave sensors of the microwave moisture detector are symmetrically arranged on both sides of the detection box, characterized in that: a baffle is provided above the microwave moisture detector, and a receiving plate is provided below the microwave moisture detector; push-pull openings are provided in the detection box corresponding to the baffle and the receiving plate, and the baffle and the receiving plate are both arranged in the push-pull openings and are respectively installed on the detection box by two push-pull components.

[0005] Preferably, the push-pull assembly includes a push-pull motor and a push-pull screw. The push-pull motor is fixedly installed on the outside of the detection box, and the push-pull screw is horizontally set with one end fixedly connected to the output end of the push-pull motor. The baffle and the receiving plate are respectively threadedly connected to their corresponding push-pull screws.

[0006] Preferably, the push-pull screw connected to the baffle is located above the baffle, and a movable plate is connected to the upper side of one end of the baffle, with the movable plate threadedly connected to the push-pull screw; the push-pull screw connected to the receiving plate is located below the receiving plate, and a movable plate is connected to the lower side of one end of the receiving plate, with the movable plate threadedly connected to the push-pull screw.

[0007] Preferably, a fixing plate is fixedly installed on the side of the push-pull motor near the output end, and the fixing plate is fixedly connected to the detection box by multiple fixing columns.

[0008] Preferably, a position detection device is provided on the push-pull assembly and / or the detection box.

[0009] Preferably, the position detection device is a proximity switch, which is fixedly mounted on the detection box, and a detection element corresponding to the proximity switch is provided at the end of the baffle and receiving plate away from the detection box.

[0010] Preferably, the position detection device is a proximity switch, which is fixedly mounted on the push-pull assembly, and a detection element corresponding to the proximity switch is provided at the end of the baffle and receiving plate away from the detection box.

[0011] Preferably, a grain position detection device is also fixedly installed on the detection box, and the grain position detection device is located above the baffle.

[0012] Compared with existing technologies, the above technical solution has the following beneficial effects:

[0013] 1. This utility model has a baffle above the microwave moisture detector and a receiving plate below the microwave moisture detector. Both the baffle and the receiving plate can be pushed and pulled on the detection box. The applicant has found through a large number of experiments that when the grain falls into the detection box, the area of ​​the grain detected by the microwave moisture detector is blocked from both above and below, and a detection space is formed between the baffle and the receiving plate. The grain moisture content detected in the detection space is consistent with the actual grain content, and the measured grain moisture content is more accurate.

[0014] 2. Install a grain position detection device above the baffle. After the grain falls to a height higher than the baffle, push the baffle into the detection box to ensure that the grain fills the detection space between the baffle and the receiving plate, making the detected data more accurate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure on the other side of this utility model.

[0017] Figure 3 This is a schematic diagram of the push-pull assembly.

[0018] The components include: 1. Detection box; 2. Microwave moisture meter; 3. Baffle; 4. Push-pull assembly; 5. Receiving plate; 6. Grain position detection switch; 7. Proximity switch; 8. Mounting plate; 9. Fixing plate; 10. Fixing column; 11. Push-pull screw; 12. Moving plate; 13. Push-pull motor; 14. Detection plate; 15. Detection bolt. Detailed Implementation

[0019] Figures 1-3 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-3 The present invention will be further described below.

[0020] like Figures 1-2 As shown, this utility model discloses a grain moisture detection device, including a detection box 1 and a microwave moisture detector 2. The microwave moisture detector 2 includes microwave sensors, which are symmetrically arranged on both sides of the detection box 1. The microwave moisture detector 2 detects the moisture content of the grain. A baffle 3 is arranged above the microwave moisture detector 2, and a receiving plate 5 is arranged below the microwave moisture detector 2. A push-pull opening is provided on the detection box 1 corresponding to the baffle 3 and the receiving plate 5. The baffle 3 and the receiving plate 5 are both set in the push-pull opening and are installed on the detection box 1 by two push-pull components 4. The grain falls from the upper feed port of the detection box 1 onto the receiving plate 5. The baffle 3 is then positioned above the microwave moisture detector 2, forming a detection space between the baffle 3 and the receiving plate 5. The microwave moisture detector 2 detects the moisture content of the grain in the space. After the detection is completed, the receiving plate 5 is pulled out and the grain falls from the discharge port at the bottom of the detection box 1.

[0021] like Figure 3 As shown, the push-pull assembly 4 includes a push-pull motor 13 and a push-pull screw 11. The push-pull motor 13 is fixedly installed on the outside of the detection box 1. The baffle 3 and the receiving plate 5 are both horizontally arranged. The push-pull screw 11 is horizontally arranged and one end is fixedly connected to the output end of the push-pull motor 13. The baffle 3 and the receiving plate 5 are respectively threaded onto their corresponding push-pull screws 11. The push-pull motor 13 drives the push-pull screw 11 to rotate. The baffle 3 and the receiving plate 5 are locked in the push-pull opening. Therefore, the baffle 3 and the receiving plate 5 move along the push-pull opening to realize the push-pull of the baffle 3 and the receiving plate 5. Pushing the baffle 3 and the receiving plate 5 makes the baffle 3 and the receiving plate 5 block inside the detection box 1. Pulling the baffle 3 and the receiving plate 5 makes the baffle 3 and the receiving plate 5 leave the detection box 1, so that the grain can fall inside the detection box 1.

[0022] Specifically, the baffle 3 is connected to the push-pull assembly 4 above the baffle 3. A movable plate 12 is fixedly connected to the upper side of the baffle 3 away from the detection box 1. The movable plate 12 is threadedly connected to the push-pull screw 11. A fixed plate 9 is fixedly installed on the side of the push-pull motor 13 near the output end. The fixed plate 9 is fixedly connected to the detection box 1 by multiple fixed posts 10. One end of the fixed post 10 is fixedly connected to the outside of the detection box 1, and the other end of the fixed post 10 is fixedly connected to the fixed plate 9. The push-pull motor 13 drives the push-pull screw 11. Rotating, the movable plate 12 drives the baffle 3 to move horizontally along the push-pull opening into / out of the test box 1; the push-pull assembly 4 connected to the receiving plate 5 is set below the receiving plate 5, and the movable plate 12 is fixedly connected to the lower side of the receiving plate 5 away from the test box 1. The movable plate 12 is threadedly connected to the push-pull screw 11. The push-pull motor 13 is also fixedly connected to the outside of the test box 1 through the fixed plate 9 and the fixed column 10. The push-pull motor 13 drives the push-pull screw 11 to rotate, and the movable plate 12 drives the receiving plate 5 to move horizontally along the push-pull opening into / out of the test box 1.

[0023] A position detection device is provided on the push-pull assembly 4 and / or the detection box 1. In this embodiment, the position detection device is a proximity switch 7, and in this embodiment, a proximity switch 7 is provided on both the push-pull assembly 4 and the detection box 1. Specifically, proximity switch 7 is fixedly mounted on detection box 1 via mounting plate 8. Detection bolts 15 corresponding to proximity switch 7 are provided at the ends of baffle 3 and receiving plate 5 away from detection box 1. When push-pull motor 13 drives baffle 3 and receiving plate 5 into detection box 1, proximity switch 7 detects detection bolts 15, indicating that baffle 3 and receiving plate 5 are completely blocked inside detection box 1, and push-pull motor 13 stops working. Another proximity switch 7 is fixedly mounted on fixing plate 9 on the front side of push-pull motor 13. Detection plate 14 corresponding to proximity switch 7 is provided at the ends of baffle 3 and receiving plate 5 away from detection box 1. When push-pull motor 13 reverses and drives baffle 3 and receiving plate 5 out of detection box 1, proximity switch 7 detects detection plate 14, indicating that baffle 3 and receiving plate 5 no longer block the inner cavity of detection box 1, and push-pull motor 13 stops working to prevent baffle 3 and receiving plate 5 from coming out of the push-pull opening.

[0024] A grain position detection device is also fixedly installed on the detection box 1. The grain position detection device is a grain position detection switch 6. The grain position detection switch 6 is located above the baffle 3. After the grain falls to a height higher than the baffle 3, the baffle 3 is pushed into the detection box 1 to ensure that the grain fills the detection space between the baffle 3 and the receiving plate 5, so that the detected data is more accurate.

[0025] Taking three groups of corn as examples, the following is a comparison of the corn moisture content measured when the baffle 3 is installed inside the detection box 1, the corn moisture content measured when the baffle 3 is not installed inside the detection box 1, and the corn moisture content actually measured manually using a common moisture meter:

[0026] .

[0027] Therefore, it can be seen that in the grain detection device of this utility model, the baffle 3 is set inside the detection box 1, and a detection space is formed between the baffle 3 and the receiving plate 5. The grain moisture content in the detection space detected by the microwave moisture detector 2 is closer to the grain moisture content measured manually using an ordinary moisture detector, and the detection result is more accurate.

[0028] In use, the lower push-pull motor 13 pushes the receiving plate 5 into the detection box 1. Grains fall from the feed inlet on the upper side of the detection box 1 onto the receiving plate 5. Once the grain position detection switch 6 detects the grains, the grains stop falling. The upper push-pull motor 13 then pushes the baffle 3 into the detection box 1, filling the detection space between the baffle 3 and the receiving plate 5. The microwave moisture detector 2 detects the moisture content of the grains in the space. After the detection is completed, both push-pull motors 13 reverse, causing the baffle 3 and the receiving plate 5 to be pulled out of the detection box 1. The grains fall from the receiving inlet on the lower side of the detection box 1. Through extensive experiments, the applicant has found that when the grains fall into the detection box 1, the area of ​​grains detected by the microwave moisture detector 2 is blocked both above and below, forming a detection space between the baffle 3 and the receiving plate 5. The moisture content of the grains detected in the detection space is consistent with the actual grain content, making the measured grain moisture content more accurate.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its scope of protection shall still fall within the protection scope of this utility model.

Claims

1. A grain moisture detection device, comprising a detection box (1) and a microwave moisture detector (2), wherein microwave sensors of the microwave moisture detector (2) are symmetrically arranged on both sides of the detection box (1), characterized in that: A baffle (3) is provided above the microwave moisture detector (2), and a receiving plate (5) is provided below the microwave moisture detector (2). A push-pull opening is provided on the detection box (1) corresponding to the baffle (3) and the receiving plate (5). The baffle (3) and the receiving plate (5) are both set in the push-pull opening and are installed on the detection box (1) by two push-pull components (4).

2. A grain moisture detection device according to claim 1, wherein: The push-pull assembly (4) includes a push-pull motor (13) and a push-pull screw (11). The push-pull motor (13) is fixedly installed on the outside of the detection box (1). The push-pull screw (11) is horizontally set and one end is fixedly connected to the output end of the push-pull motor (13). The baffle (3) and the receiving plate (5) are respectively threadedly connected to their corresponding push-pull screws (11).

3. A grain moisture detection device according to claim 2, wherein: The push-pull screw (11) connected to the baffle (3) is located above the baffle (3), and a movable plate (12) is connected to the upper side of one end of the baffle (3). The movable plate (12) is threadedly connected to the push-pull screw (11). The push-pull screw (11) connected to the receiving plate (5) is located below the receiving plate (5). A movable plate (12) is connected to the lower side of one end of the receiving plate (5). The movable plate (12) is threadedly connected to the push-pull screw (11).

4. The grain moisture detection device of claim 2, wherein: The push-pull motor (13) has a fixed plate (9) fixedly installed on one side near the output end. The fixed plate (9) is fixedly connected to the detection box (1) by multiple fixed columns (10).

5. The grain moisture detection device of claim 1, wherein: A position detection device is provided on the push-pull assembly (4) and / or the detection box (1).

6. A grain moisture detection device according to claim 5, wherein: The position detection device is a proximity switch (7), which is fixedly installed on the detection box (1). A detection element corresponding to the proximity switch (7) is provided at the end of the baffle (3) and the receiving plate (5) away from the detection box (1).

7. A grain moisture detection device according to claim 5, wherein: The position detection device is a proximity switch (7), which is fixedly mounted on the push-pull assembly (4). A detection element corresponding to the proximity switch (7) is provided at the end of the baffle (3) and the receiving plate (5) away from the detection box (1).

8. The grain moisture detection device of claim 1, wherein: A grain position detection device is also fixedly installed on the detection box (1), and the grain position detection device is located above the baffle (3).

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