A sample crushing and mixing device for food testing

Abstract

This utility model relates to the field of food testing technology, and in particular to a sample crushing and mixing device for food testing. It includes a mixing chamber with an inlet and an outlet at its top and bottom, respectively, and also includes a screen and a mixing mechanism. The screen is installed on the inner wall of the mixing chamber and located below the mixing mechanism. This utility model not only utilizes the cross-movement of blades one and two to scrape off samples adhering to or entangled on each other's surfaces, effectively avoiding abnormal crushing caused by sample adhesion or entanglement, but also uses a scraper to scrape off samples adhering to the inner wall of the mixing chamber and the main shaft. Simultaneously, it conveys samples that do not meet the requirements at the top of the screen upwards to avoid deposition and blockage. This design not only reduces the difficulty of subsequent cleaning and lightens the load on the equipment, effectively ensuring the normal operation of the entire device, but also effectively avoids the negative impact on sample mixing quality and efficiency caused by sample adhesion and deposition.

Description

Technical Field

[0001] This utility model relates to the field of food testing technology, and in particular to a sample crushing and mixing device for food testing. Background Technology

[0002] In the field of food testing, in order to effectively protect public health and safety and prevent harmful substances in food from harming people, it is essential to conduct strict testing before food is sold. Before carrying out food testing, it is usually necessary to use a sample crushing and mixing device to crush and mix the food samples. This process not only improves the accuracy and efficiency of food sample testing, but also lays the foundation for the smooth progress of subsequent testing work.

[0003] Existing sample crushing and mixing devices often result in crushed samples adhering to or entangled on the crushing blades during food sample crushing and mixing. This affects the normal use of the blades, leading to abnormal crushing operations and even blade malfunctions, thereby reducing crushing quality and efficiency. On the other hand, crushed samples tend to deposit on the bottom wall of the mixing chamber, which not only negatively impacts the mixing quality and efficiency but also causes problems in subsequent food testing due to uneven mixing, affecting the accuracy and reliability of later test results. Consequently, these devices are not practical. Utility Model Content

[0004] The purpose of this invention is to solve the problem that sample crushing and mixing devices in the prior art are prone to sample adhesion, entanglement and deposition during use, thereby reducing the quality and efficiency of sample crushing and mixing. Therefore, this invention proposes a sample crushing and mixing device for food testing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sample crushing and mixing device for food testing includes a mixing chamber, wherein an inlet and an outlet are respectively installed at the top and bottom of the mixing chamber, and further includes:

[0007] The sieve and mixing mechanism are installed on the inner wall of the mixing chamber and below the mixing mechanism. A motor is installed at the top of the mixing chamber, and the output end of the motor passes through the top wall of the mixing chamber and is fixedly connected to the main shaft. The mixing mechanism is set on the mixing chamber and the main shaft and is used to crush and mix the sample in the mixing chamber and prevent the sample from adhering or tangling during crushing.

[0008] An anti-settling scraping mechanism is installed on the stirring and mixing mechanism to scrape off the sample adhering to the inner wall of the mixing tank and the main shaft and prevent the sample from settling.

[0009] Preferably, the stirring and mixing mechanism includes two connecting blocks and multiple blades. The two connecting blocks and multiple blades are all mounted on the outer wall of the main shaft. The connecting blocks are located above the blades. A driven shaft is rotatably connected through each of the two connecting blocks. Multiple crushing parts are provided on the outer wall of the driven shaft. A drive assembly is provided on the mixing box and the two driven shafts to make the two driven shafts rotate.

[0010] Preferably, the drive assembly includes a gear ring and two gears. The gear ring is fixedly mounted on the inner side wall of the mixing tank, and the two gears are respectively mounted on two driven shafts and mesh with the gear ring.

[0011] Preferably, the multiple crushing section positions correspond to the multiple blade positions, the crushing section is composed of two blades, and a through groove is provided between the two blades for the blade to pass through.

[0012] Preferably, the anti-settling scraping mechanism includes multiple scrapers, which are evenly installed on two driven shafts. The outer walls of the scrapers are in contact with the inner wall of the mixing tank and the outer wall of the main shaft, respectively, and the scrapers are arranged in a spiral shape.

[0013] Preferably, the bottom end of the scraper near the discharge port is in contact with the top end of the screen.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] 1. By setting up a stirring and mixing mechanism, this utility model can not only scrape off samples that are adhered or entangled on each other's surfaces by using the cross motion of blade one and blade two, effectively avoiding abnormal breakage caused by sample adhesion or entanglement, but also provide sufficient crushing and mixing for the sample through the combined motion of the driven shaft's revolution and rotation, thereby effectively improving the quality and efficiency of sample crushing and mixing.

[0016] 2. This utility model, through the cooperation of the anti-settling scraping mechanism and the screen, can scrape off the samples adhering to the inner wall of the mixing box and the main shaft during the rotation of the scraper. At the same time, it can transport the samples that do not meet the requirements at the top of the screen upward to avoid sedimentation and blockage. This design not only reduces the difficulty of subsequent cleaning and lightens the load on the equipment, but also effectively ensures the normal operation of the entire device. It also effectively avoids the negative impact on the sample mixing quality and efficiency caused by sample adhesion and sedimentation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a sample crushing and mixing device for food testing proposed in this utility model;

[0018] Figure 2 This is a half-sectional isometric view of a sample crushing and mixing device for food testing proposed in this utility model;

[0019] Figure 3 for Figure 2 A magnified view of the area at point X in the middle.

[0020] In the diagram: 1. Mixing box; 2. Motor; 3. Discharge port; 4. Screen; 5. Gear ring; 6. Gear; 7. Main shaft; 8. Driven shaft; 9. Blade 1; 10. Blade 2; 11. Scraper; 12. Feed port. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1 to 3 A sample crushing and mixing device for food testing includes a mixing chamber 1, with an inlet 12 and an outlet 3 installed at the top and bottom of the mixing chamber 1, respectively. A screen 4 is installed on the inner wall of the mixing chamber 1. A motor 2 is installed at the top of the mixing chamber 1, with the output end of the motor 2 penetrating through the top wall of the mixing chamber 1 and fixedly connected to a main shaft 7. A stirring and mixing mechanism is provided on the mixing chamber 1 and the main shaft 7 to crush and mix the sample in the mixing chamber 1 and prevent the sample from adhering and tangling during crushing. The screen 4 is located below the stirring and mixing mechanism. The stirring and mixing mechanism includes two connecting blocks and multiple blades 9. The two connecting blocks and multiple blades 9 are all installed on the outer wall of the main shaft 7. The connecting blocks are located above the blades 9. A driven shaft 8 is rotatably connected through each of the two connecting blocks. Multiple crushing parts are provided on the outer wall of the driven shaft 8. A drive assembly is provided on the mixing chamber 1 and the two driven shafts 8 to make the two driven shafts 8 rotate.

[0023] The drive assembly includes a gear ring 5 and two gears 6. The gear ring 5 is fixedly installed on the inner side wall of the mixing box 1. The two gears 6 are respectively installed on two driven shafts 8 and mesh with the gear ring 5. Multiple crushing section positions correspond to multiple blade 9 positions. The crushing section is composed of two blades 10, and a through groove is provided between the two blades 10 in the crushing section for the blade 9 to pass through.

[0024] Two driven shafts 8 are equipped with a common anti-settling scraping mechanism, which is used to scrape off the sample adhering to the inner wall of the mixing box 1 and the main shaft 7 and prevent the sample from settling. The anti-settling scraping mechanism includes multiple scrapers 11, which are evenly installed on the two driven shafts 8. The outer walls of the scrapers 11 are in contact with the inner wall of the mixing box 1 and the outer wall of the main shaft 7, respectively. The scrapers 11 are arranged in a spiral shape, and the bottom end of the scraper 11 near the discharge port 3 is in contact with the top end of the screen 4.

[0025] In use, the food sample is first placed into the mixing chamber 1 through the inlet 12. Then, the motor 2 is started, which drives the main shaft 7 to rotate. The driven shaft 8 revolves around the main shaft 7 under the linkage of the connecting block. Since the driven shaft 8 is rotatably connected to the connecting block, and the gear 6 on the driven shaft 8 meshes with the gear ring 5 on the inner wall of the mixing chamber 1, when the main shaft 7 rotates and drives the driven shaft 8 to revolve, the driven shaft 8 will rotate on its own axis in the opposite direction to the revolution. At the same time, due to the multiple blades 9 on the main shaft 7... The position corresponds to the position of multiple crushing parts on the driven shaft 8, and a through groove is provided between the two blades 2 10 in the crushing part for blade 1 9 to pass through. Therefore, during the process of blade 1 9 and blade 2 10 rotating to crush the sample, blade 1 9 will pass through the through groove and cooperate with blade 2 10 to scrape off the sample that is adhered or entangled on each other's surfaces. This design effectively avoids abnormal crushing caused by sample adhesion or entanglement, ensuring that blade 1 9 and blade 2 10 are always in good working condition, thereby effectively ensuring the quality and efficiency of sample crushing.

[0026] During this process, the close cooperation between blade 9 and blade 10 continuously crushes the sample, effectively improving the crushing efficiency. Simultaneously, since the driven shaft 8 rotates on its own axis while revolving around the main shaft 7, this combined motion provides ample stirring and mixing for the crushed sample, effectively improving mixing quality and efficiency. Furthermore, because multiple scrapers 11 are evenly installed on the two driven shafts 8, and the outer walls of the scrapers 11 are in contact with the inner wall of the mixing chamber 1 and the outer wall of the main shaft 7 respectively, the scrapers 11 can scrape off the sample adhering to the inner wall of the mixing chamber 1 and the main shaft 7 during the revolution and rotation of the driven shaft 8. This design not only avoids the negative impact of sample adhesion on the normal operation of the entire device but also reduces the difficulty of subsequent cleaning and the load on the motor 2, effectively ensuring crushing and mixing quality and efficiency, and reducing maintenance costs.

[0027] During the crushing and mixing of the sample, some of the crushed and mixed sample will fall to the top of the screen 4. At this time, the crushed and mixed sample that meets the requirements will fall from the screen 4 and be discharged through the discharge port 3. The crushed and mixed sample that does not meet the requirements will be deposited on the top of the screen 4. Since the scraper 11 is spirally arranged and the bottom of the scraper 11 near the discharge port 3 is in contact with the top of the screen 4, the rotating scraper 11 can scrape the sample that does not meet the requirements off the screen 4 and continuously convey it upward. This effectively avoids the problem of insufficient crushing caused by sample deposition and prevents the screen 4 from being blocked by sample deposition. Thus, while ensuring the mixing quality and efficiency, it also effectively ensures the normal operation of the entire device.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sample crushing and mixing device for food testing, comprising a mixing chamber (1), wherein an inlet (12) and an outlet (3) are respectively installed at the top and bottom of the mixing chamber (1), characterized in that, Also includes: The screen (4) and the stirring and mixing mechanism are installed on the inner wall of the mixing box (1) and located below the stirring and mixing mechanism. A motor (2) is installed at the top of the mixing box (1). The output end of the motor (2) passes through the top wall of the mixing box (1) and is fixedly connected to the main shaft (7). The stirring and mixing mechanism is set on the mixing box (1) and the main shaft (7) to crush and mix the sample in the mixing box (1) and prevent the sample from adhering or tangling during crushing. The anti-settling scraping mechanism is installed on the stirring and mixing mechanism to scrape off the sample adhering to the inner wall of the mixing tank (1) and the main shaft (7) and prevent the sample from settling.

2. The sample crushing and mixing device for food testing according to claim 1, characterized in that, The mixing mechanism includes two connecting blocks and multiple blades (9). The two connecting blocks and multiple blades (9) are all mounted on the outer wall of the main shaft (7). The connecting blocks are located above the blades (9). A driven shaft (8) is rotatably connected through the two connecting blocks. Multiple crushing parts are provided on the outer wall of the driven shaft (8). A drive assembly is provided on the mixing box (1) and the two driven shafts (8) to make the two driven shafts (8) rotate.

3. The sample crushing and mixing device for food testing according to claim 2, characterized in that, The drive assembly includes a gear ring (5) and two gears (6). The gear ring (5) is fixedly installed on the inner side wall of the mixing box (1), and the two gears (6) are respectively installed on two driven shafts (8) and both mesh with the gear ring (5).

4. The sample crushing and mixing device for food testing according to claim 2, characterized in that, The multiple crushing section positions correspond to the multiple blade one (9) positions. The crushing section is composed of two blade two (10), and a through groove is provided between the two blade two (10) in the crushing section for the blade one (9) to pass through.

5. The sample crushing and mixing device for food testing according to claim 2, characterized in that, The anti-sinking scraping mechanism includes multiple scrapers (11), which are evenly installed on two driven shafts (8). The outer walls of the scrapers (11) are in contact with the inner wall of the mixing box (1) and the outer wall of the main shaft (7), respectively, and the scrapers (11) are arranged in a spiral shape.

6. The sample crushing and mixing device for food testing according to claim 5, characterized in that, The bottom end of the scraper (11) near the discharge port (3) is in contact with the top end of the screen (4).

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