A conveying system for online detection of the fineness of a cereal grinding slurry

Abstract

The present application relates to the field of food intelligent processing equipment, in particular to a conveying system for online detection of the fineness of grain grinding slurry. The conveying system comprises a screw conveyor, a bellows connected to the discharge end of the screw conveyor, a straight pipe connected to the other end of the bellows, and a detection mechanism arranged on the straight pipe; the detection mechanism comprises a rack, a detection chamber arranged on the rack, a scraper fineness gauge arranged on the inner wall of the bottom of the detection chamber, and a pneumatic sampling valve arranged on the rack and in communication with the straight pipe; the pneumatic sampling valve takes out the slurry in the straight pipe as needed and sends it to the scraper fineness gauge in the detection chamber; a scraper assembly is arranged in the detection chamber to move the slurry along the scale change direction of the scraper fineness gauge; a discharge chute is arranged on the bottom of the side of the detection chamber away from the straight pipe. The present application can realize real-time online detection of the fineness of the slurry, without manual offline sampling, avoiding the time lag problem of the traditional detection method, and meeting the demand of online quality control for continuous production.

Description

Technical Field

[0001] This invention relates to the field of intelligent food processing equipment, and more particularly to a conveying system for online detection of the fineness of grain grinding slurry. Background Technology

[0002] Sesame is a common grain and a traditional oilseed crop, widely used in the industrial processing of food. The quality of sesame paste and other products made from sesame seeds through washing, roasting, and grinding is closely related to the fineness of the ground slurry. The fineness of the slurry directly affects the product's taste, stability, and the continuity of subsequent processing steps, making it an important indicator of the quality of deep-processed sesame.

[0003] In the industrial production of sesame, the pulp after grinding typically needs to be transported via pipelines to subsequent homogenization, blending, or filling stages. To ensure the consistency of the final product quality, the fineness of the pulp needs to be monitored in real time during the transportation process. Traditional fineness testing methods mostly rely on manual offline sampling and testing, which is complex and time-consuming, making it difficult to meet the online quality control requirements of continuous production. Summary of the Invention

[0004] The purpose of this invention is to address the problems of complex and time-delayed manual offline sampling processes in the prior art by proposing an online conveying system for detecting the fineness of grain grinding slurry.

[0005] The technical solution of this invention: A conveying system for online detection of the fineness of grain grinding slurry, comprising a screw conveyor, a corrugated pipe connected to the discharge end of the screw conveyor, a straight pipe connected to the other end of the corrugated pipe, and a detection mechanism disposed on the straight pipe; further comprising a control system electrically connected to the detection mechanism; the detection mechanism comprising a frame, a detection chamber disposed on the frame, a scraper fineness gauge disposed on the inner wall of the bottom of the detection chamber, and a pneumatic sampling valve disposed on the frame and communicating with the straight pipe; the pneumatic sampling valve extracts the slurry in the straight pipe as needed and sends it to the scraper fineness gauge in the detection chamber; a scraper assembly is disposed in the detection chamber to scrape the slurry along the direction of change of the scraper fineness gauge scale; a discharge trough is disposed at the bottom of the detection chamber on the side away from the straight pipe.

[0006] Preferably, the scraper assembly includes a scraper slidably disposed on the inner wall of the detection chamber, and a power module that drives the scraper to move along the surface of the scraper fineness gauge; after the scraper moves to its maximum stroke, it disengages from the scraper fineness gauge and is positioned directly above the discharge chute.

[0007] Preferably, the power module includes a motor mounting base disposed on the outer wall of the testing chamber, a motor disposed on the motor mounting base, and a screw coaxially connected to the output shaft of the motor. The end of the screw extends into the testing chamber and is rotatably connected to the testing chamber. The scraper is provided with a threaded hole that mates with the screw.

[0008] Preferably, the scraper is perpendicular to the scraper fineness gauge, and the length of the scraper is greater than the width of the scraper fineness gauge.

[0009] Preferably, a rinsing box is installed on the side wall of the testing chamber, the rinsing box is equipped with multiple nozzles facing the scraper fineness gauge, and a rinsing fluid inlet pipe is installed on the rinsing box, which is connected to a high-pressure liquid supply device.

[0010] Preferably, a camera mounting base is provided on the outer wall of the testing chamber, and a camera is mounted on the camera mounting base. A through hole is opened on the side wall of the testing chamber, and a transparent plate is placed in the through hole. The camera faces the scraper fineness gauge through the transparent plate. The control system is connected to the camera for data transmission. After a single scraping of the slurry is completed, the camera takes a picture and transmits the data to the control system.

[0011] Preferably, a drying box is installed at the top of the testing chamber, a hot air inlet pipe is installed on the drying box and connected to the drying equipment, multiple air outlets are provided at the bottom of the drying box, and the control system is connected to the drying equipment.

[0012] Preferably, an elevated section is provided at the bottom of the testing chamber to install a scraper fineness gauge, and an inclined surface is formed between the elevated section and the two side walls, and a guide surface is provided between the discharge chute and the two side walls of the testing chamber.

[0013] Compared with existing technologies, this invention has the following beneficial technical effects: The pneumatic sampling valve, combined with a bellows and straight pipe structure, ensures accurate sampling and stable conveying, reducing the impact of screw conveyor vibration on detection accuracy. The scraper assembly, driven by an encoder motor, allows for precise control of scraping speed and stroke. Combined with camera imaging and deep learning model automatic recognition, this improves the accuracy and efficiency of fineness reading. The rinsing and drying devices inside the detection chamber automatically complete cleaning and drying, ensuring consistent initial conditions for each test and preventing residues from interfering with subsequent tests. The overall structure is compact and highly automated, enabling real-time online detection of slurry fineness without the need for manual offline sampling. This avoids the time lag problem of traditional detection methods and meets the requirements of continuous production for online quality control. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 This is a schematic diagram of the internal structure of the inspection room; Figure 4 for Figure 3 A structural diagram from another perspective; Figure 5 for Figure 4 A sectional view; Reference numerals: 1. Corrugated pipe; 2. Straight pipe; 3. Frame; 4. Pneumatic sampling valve; 5. Testing chamber; 6. Scraper fineness gauge; 7. Inclined surface; 8. Discharge chute; 9. Guide surface; 10. Scraper; 11. Screw; 12. Motor; 13. Guide rail; 14. Motor mounting base; 15. Sampling valve mounting base; 16. Rinsing box; 17. Nozzle; 18. Rinsing fluid inlet pipe; 19. Camera mounting base; 20. Camera; 21. Transparent plate; 22. Drying box; 23. Hot air inlet pipe; 24. Baffle. Detailed Implementation

[0015] Example 1; as Figures 1-4 As shown, the present invention proposes an online conveying system for detecting the fineness of grain grinding slurry, comprising a screw conveyor, a corrugated pipe 1 connected to the discharge end of the screw conveyor, a straight pipe 2 connected to the other end of the corrugated pipe 1, and a detection mechanism mounted on the straight pipe 2; it also includes a control system electrically connected to the detection mechanism; the detection mechanism includes a frame 3, a detection chamber 5 mounted on the frame 3, a scraper fineness gauge 6 mounted on the bottom inner wall of the detection chamber 5, and a pneumatic sampling valve 4 mounted on the frame 3 and connected to the straight pipe 2. Specifically, a sampling valve mounting seat 15 is provided on the frame 3 for pneumatic sampling. Valve 4 is installed on the sampling valve mounting seat 15; the pneumatic sampling valve 4 takes out the slurry in the straight pipe 2 as needed and sends it to the scraper fineness gauge 6 in the testing chamber 5; the bellows 1 is used to reduce the vibration caused by the screw conveyor, so that the subsequent slurry is transported more smoothly; a scraper assembly is installed in the testing chamber 5 to scrape the slurry along the direction of the scale change of the scraper fineness gauge 6. When the fineness of the slurry matches the groove on the scraper fineness gauge, the slurry will fill the small groove and form a clear dividing line. The fineness of the slurry can be read according to the scale lines on both sides; a discharge chute 8 is installed at the bottom of the testing chamber 5 on the side away from the straight pipe 2.

[0016] Furthermore, a camera mounting base 19 is installed on the outer wall of the testing chamber 5, and a camera 20 is installed on the camera mounting base 19. The camera 20 and the nozzle 17 are located on both sides of the scraper fineness gauge 6. A through hole is opened on the side wall of the testing chamber 5, and a transparent plate 21 is installed in the through hole. The camera 20 faces the scraper fineness gauge 6 through the transparent plate 21. The control system is connected to the camera 20 for data transmission. After a single scraping of the slurry is completed, the camera 20 takes a picture and transmits the data to the control system, which is convenient for the operator to remotely identify and read the fineness. Alternatively, a deep learning model can be set in the control system to automatically identify and read the fineness data. The deep learning model is trained based on the previous data input and can automatically identify in the later stage. The model is a conventional technology and will not be described in detail here.

[0017] Example 2; as Figure 2 and Figure 5As shown, this invention proposes a conveying system for online detection of the fineness of grain grinding slurry. Compared with Embodiment 1, this embodiment details the structure of the scraper assembly. Specifically, the scraper assembly includes a scraper 10 slidably disposed on the inner wall of the detection chamber 5, and a power module that drives the scraper 10 to move along the surface of the scraper fineness gauge 6. The scraper 10 is perpendicular to the scraper fineness gauge 6, and the length of the scraper 10 is greater than the width of the scraper fineness gauge 6. After the scraper 10 moves to its maximum stroke, it disengages from the scraper fineness gauge 6 and is positioned directly above the discharge chute 8. In an optional embodiment, a guide rail 13 is provided on the inner wall of the detection chamber 5, and a groove is provided on the scraper 10 to cooperate with the guide rail 13. A rounded corner is also provided on the side of the scraper 10 near the straight pipe 2. After the scraper 10 moves to its maximum stroke, it disengages from the scraper fineness gauge 6, and the rounded corner allows it to reset and move back more smoothly.

[0018] Furthermore, the power module includes a motor mounting base 14 disposed on the outer wall of the detection chamber 5, a motor 12 disposed on the motor mounting base 14, and a screw 11 coaxially connected to the output shaft of the motor 12. The end of the screw 11 extends into the detection chamber 5 and is rotatably connected to the detection chamber 5. The scraper 10 is provided with a threaded hole that mates with the screw 11. The motor 12 drives the screw 11 to rotate, which in turn drives the scraper 10 to move, thereby scraping the slurry and detecting its fineness. In this application, the motor 12 is an encoder motor, which facilitates precise control of the rotation angle and rotation speed after being connected to the control system.

[0019] Example 3; as Figure 2 and Figure 5 As shown, this invention proposes an online conveying system for detecting the fineness of grain grinding slurry. Compared to Embodiment 2, this embodiment details how the scraper fineness gauge 6 is cleaned after detection. Specifically, a rinsing box 16 is installed on the side wall of the detection chamber 5. The rinsing box 16 is equipped with multiple nozzles 17 facing the scraper fineness gauge 6. A rinsing liquid inlet pipe 18 is installed on the rinsing box 16 and connected to a high-pressure liquid supply device. The control system is connected to the high-pressure liquid supply device. After a single fineness detection, cleaning liquid is sprayed from the nozzles 17 to clean the scraper fineness gauge 6 and the scraper 10. In an optional embodiment, a baffle 24 is installed on the detection chamber 5. The baffle 24 is located above the screw 11 to reduce the contact between the screw 11 and the rinsing liquid. Of course, due to splashing, some of the rinsing liquid will inevitably come into contact with the screw 11. To ensure the long-term stable operation of the screw 11, the surface of the screw 11 is treated with anti-corrosion and anti-rust treatment.

[0020] Example 4; as Figure 4As shown, this invention proposes a conveying system for online detection of grain grinding slurry fineness. Compared to Embodiment 3, this embodiment details how to dry the slurry after cleaning. Specifically, a drying box 22 is installed at the top of the detection chamber 5, and a hot air inlet pipe 23 is installed on the drying box 22. The hot air inlet pipe 23 is connected to the drying equipment. Multiple air outlets are provided at the bottom of the drying box 22. The control system is connected to the drying equipment. The slurry falls onto the scraper fineness gauge 6. After the scraper 10 scrapes it, the camera 20 takes a picture and uploads it. Then, the nozzle 17 sprays rinsing liquid for cleaning. The cleaning liquid mixed with the slurry is discharged from the discharge trough 8. After cleaning, the drying equipment starts working to dry the entire interior of the detection chamber 5, waiting for the next fineness detection.

[0021] Furthermore, an elevated section is provided at the bottom of the testing chamber 5 to install the scraper fineness gauge 6. An inclined surface 7 is formed between the elevated section and the two side walls to facilitate the flow of the rinsing liquid to both sides of the scraper fineness gauge 6. A guide surface 9 is provided between the discharge trough 8 and the two side walls of the testing chamber 5 to facilitate the flow of the rinsing liquid out along the discharge trough 8.

[0022] In summary, during use, the sesame slurry conveyed by the screw conveyor enters the straight pipe 2 through the corrugated pipe 1. The corrugated pipe 1 effectively reduces the vibration caused by the screw conveyor, making the slurry conveying more stable. When fineness testing is required, the control system controls the pneumatic sampling valve 4 to open, taking out the slurry in the straight pipe 2 and dropping it onto the scraper fineness gauge 6 in the testing chamber 5. Subsequently, the motor 12 drives the screw 11 to rotate, driving the scraper 10 to move along the guide rail 13 from the surface of the scraper fineness gauge 6. The scraper 10 is perpendicular to the scraper fineness gauge 6 and its length is greater than its width. During the scraping process, the slurry fills the groove of the scraper fineness gauge 6, forming a clear dividing line. After the scraper 10 moves to its maximum stroke, it leaves the scraper fineness gauge 6 and is located directly above the discharge chute 8. At this time, the camera 20 takes a picture of the scraper fineness gauge 6 through the transparent plate 21 and transmits the data to the control system. The control system automatically identifies and reads the fineness data through a preset deep learning model, or the reading can be done manually. After a single test, the control system activates the high-pressure liquid supply equipment. The nozzle 17 on the rinsing box 16 sprays cleaning fluid towards the scraper fineness gauge 6 and the scraper 10. The cleaning fluid mixed with residual slurry is discharged from the discharge trough 8, while the guide surface 9 and the inclined surface 7 assist in the liquid flow. After cleaning, the control system activates the drying equipment. Hot air enters the testing chamber 5 from the air outlet at the bottom of the drying box 22 for drying, awaiting the next test.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A conveying system for online detection of the fineness of a cereal grinding slurry, comprising a screw conveyor, a bellows (1) connected to the discharge end of the screw conveyor, a straight pipe (2) connected to the other end of the bellows (1), and a detection mechanism provided on the straight pipe (2); characterized in that, It also includes a control system, which is electrically connected to the testing mechanism; the testing mechanism includes a frame (3), a testing chamber (5) set on the frame (3), a scraper fineness gauge (6) set on the inner wall of the bottom of the testing chamber (5), and a pneumatic sampling valve (4) set on the frame (3) and connected to the straight pipe (2); the pneumatic sampling valve (4) takes out the slurry in the straight pipe (2) as needed and sends it to the scraper fineness gauge (6) in the testing chamber (5); a scraper assembly is set in the testing chamber (5) to scrape the slurry and move it along the direction of the scale change of the scraper fineness gauge (6); a discharge trough (8) is set at the bottom of the side of the testing chamber (5) away from the straight pipe (2).

2. The conveying system for online detection of fineness of cereal grinding slurry according to claim 1, characterized in that, The scraper assembly includes a scraper (10) that is slidably disposed on the inner wall of the detection chamber (5), and a power module that drives the scraper (10) to move along the surface of the scraper fineness gauge (6); after the scraper (10) moves to the maximum stroke, it disengages from the scraper fineness gauge (6) and is located directly above the discharge chute (8).

3. The conveying system for online detection of fineness of cereal grinding slurry according to claim 2, characterized in that, The power module includes a motor mounting base (14) set on the outer wall of the test chamber (5), a motor (12) set on the motor mounting base (14), and a screw (11) coaxially connected to the output shaft of the motor (12). The end of the screw (11) extends into the test chamber (5) and is rotatably connected to the test chamber (5). The scraper (10) is provided with a threaded hole that mates with the screw (11).

4. The conveying system for online detection of grain grinding slurry fineness according to claim 2, characterized in that, The scraper (10) is perpendicular to the scraper fineness gauge (6), and the length of the scraper (10) is greater than the width of the scraper fineness gauge (6).

5. The conveying system for online detection of grain grinding slurry fineness according to claim 1, characterized in that, A rinsing box (16) is installed on the side wall of the testing chamber (5). Multiple nozzles (17) facing the scraper fineness gauge (6) are installed on the rinsing box (16). A rinsing fluid inlet pipe (18) is installed on the rinsing box (16). The rinsing fluid inlet pipe (18) is connected to a high-pressure liquid supply device.

6. The conveying system for online detection of grain grinding slurry fineness according to claim 1, characterized in that, A camera mounting base (19) is set on the outer wall of the testing chamber (5), and a camera (20) is set on the camera mounting base (19). A through hole is opened on the side wall of the testing chamber (5), and a transparent plate (21) is set in the through hole. The camera (20) faces the scraper fineness gauge (6) through the transparent plate (21). The control system is connected to the camera (20) for data transmission. After the slurry is scraped once, the camera (20) takes a picture and transmits the data to the control system.

7. The conveying system for online detection of grain grinding slurry fineness according to claim 1, characterized in that, A drying box (22) is set on the top of the testing chamber (5). A hot air inlet pipe (23) is set on the drying box (22). The hot air inlet pipe (23) is connected to the drying equipment. Multiple air outlets are set at the bottom of the drying box (22). The control system is connected to the drying equipment.

8. The conveying system for online detection of grain grinding slurry fineness according to claim 1, characterized in that, The bottom of the testing chamber (5) is equipped with an elevated section for installing a scraper fineness gauge (6). An inclined surface (7) is formed between the elevated section and the two side walls. A guide surface (9) is set between the discharge chute (8) and the two side walls of the testing chamber (5).

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