Efficient sample preparation stirring device

Abstract

The utility model discloses an efficient sample preparation stirring device, which relates to the technical field of food inspection and detection, and comprises a sample preparation box, the upper end and the lower end in the sample preparation box are respectively provided with a stirring cavity and a driving cavity, the upper end of the sample preparation box is fixedly provided with an I-shaped top frame, and the center in the I-shaped top frame is rotatably connected with a first rotating shaft; first stirring blades are fixed on the outer side of the lower end of the first rotating shaft, a second rotating shaft is rotationally connected to the center in the sample preparation box, second stirring blades are fixed on the outer side of the upper end of the second rotating shaft and located on the inner side of the stirring cavity, and a wall scraping frame is fixed on the outer side of the second rotating shaft and located on the inner side of the stirring cavity. According to the efficient sample preparation stirring device provided by the utility model, through the integral structural matching design, the stirring force is more uniform, the mixing effect is effectively improved, and meanwhile, new food materials can be conveniently and directly added into a material pile.

Description

Technical Field

[0001] The utility model relates to the technical field of food inspection and detection, in particular to a high-efficiency sample preparation and stirring device. Background Art

[0002] When conducting food inspection and testing, the received food is first ground, chopped or mixed to the extent possible to make it a uniformly mixed food material, and the part that can represent the whole is selected from the food material, called the sample material, for analysis. After the sample material is analyzed, the inspection of the food is completed.

[0003] For example, a Chinese utility model patent (CN216498715U) discloses a sample preparation and stirring device specially used for food inspection and testing, which states: "It is convenient to place the V-shaped stirring rod into the mixing drum, and it is convenient to take the V-shaped stirring rod out of the mixing drum, which can achieve the purpose of facilitating the placement and taking of the mixing drum. Through the rotation of the V-shaped stirring rod, it is convenient to prepare food inspection samples."

[0004] The above-mentioned stirring device performs stirring operation by driving the rectangular rod to drive the V-shaped stirring rod. However, during the operation, the V-shaped stirring rod has a single rotation direction, and the stirring force of the upper and lower layers in the stirring barrel is uneven, which causes some food materials to easily accumulate in a certain place and the mixing effect is poor. At the same time, when new food materials are added during the stirring process, the newly added materials flow to the surface and are not convenient to quickly penetrate into the material pile that has been mixed for a period of time, resulting in uneven mixing of new and old materials during sampling. For this reason, the present application proposes an efficient sample preparation stirring device. Utility Model Content

[0005] Based on this, it is necessary to provide a high-efficiency sample preparation and stirring device to address the above-mentioned technical problems. Through the overall structural coordination design, the first stirring blade and the second stirring blade can be driven to perform alternating forward and reverse cycles on the upper and lower layers inside the stirring chamber respectively, and the scraping rack can be used to conveniently scrape off the materials accumulated on the inner wall of the stirring chamber, thereby making the stirring force more uniform and effectively improving the mixing effect. At the same time, through the feed trough and the guide trough, new food materials can be directly added to the material pile between the first stirring blade and the second stirring blade, so as to cooperate with the movement of the first stirring blade and the second stirring blade to facilitate the rapid mixing of new and old materials.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An efficient sample preparation and stirring device, which is used in food inspection and testing;

[0008] The invention comprises a sample preparation box, wherein a stirring chamber and a driving chamber are respectively provided at the upper and lower ends of the sample preparation box, an I-shaped top frame is fixed on the upper end of the sample preparation box, a first rotating shaft is rotatably connected at the center of the inside of the I-shaped top frame, a first stirring blade is fixed on the outer side of the lower end of the first rotating shaft, a first spur gear is fixed on the outer side of the upper end of the first rotating shaft and located at the upper end of the I-shaped top frame, a second rotating shaft is rotatably connected at the center of the inside of the sample preparation box, a second stirring blade is fixed on the outer side of the upper end of the second rotating shaft and located at the inner side of the stirring chamber, a second spur gear is fixed on the outer side of the lower end of the second rotating shaft and located at the inner side of the driving chamber, a driving assembly is arranged on the outer sides of the first spur gear and the second spur gear, a scraper frame is fixed on the outer side of the second rotating shaft and located at the inner side of the stirring chamber, and the outer side of the scraper frame is in contact with the inner side of the stirring chamber.

[0009] As a preferred implementation of the high-efficiency sample preparation and stirring device provided by the utility model, a supporting stand is fixed to the upper end of the I-shaped top frame.

[0010] As a preferred embodiment of the high-efficiency sample preparation and stirring device provided by the utility model, the two driving components each include a reduction motor, and the outer sides of the first spur gear and the second spur gear are each provided with a reduction motor, and the two reduction motors are respectively fixed to the sample preparation box and the supporting stand, and a support shaft is fixed to the output end of each reduction motor, and half gears are fixed to the outer sides of the two support shafts close to each other, and the two half gears are respectively meshed and connected with the first spur gear and the second spur gear, and connecting claw frames are fixed to the outer sides of the two support shafts away from each other, and half gear rings are respectively provided on the outer sides of the two half gears, and the connecting claw frames are fixed to the half gear rings, and the two half gear rings are respectively meshed and connected with the first spur gear and the second spur gear.

[0011] As a preferred implementation of the high-efficiency sample preparation and stirring device provided by the utility model, a flow guide tube is fixed at the center of the outer side of the scraper frame.

[0012] As a preferred embodiment of the efficient sample preparation and stirring device provided by the utility model, a feed trough is opened inside the scraper frame and at the upper end of the guide tube, a guide trough is opened inside the guide tube, and the feed trough is communicated with the inside of the guide trough.

[0013] As a preferred embodiment of the efficient sample preparation and stirring device provided by the utility model, the lower end of the I-shaped top frame is symmetrically slidably connected with a sealing plate, and the interiors of the two sealing plates away from one end are provided with grabbing grooves, and limiting blocks are fixed at the four end corners on the outer side of each sealing plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The high-efficiency sample preparation stirring device provided by the utility model can drive the first stirring blade and the second stirring blade to respectively rotate the upper and lower layers inside the stirring chamber in a positive and reverse alternating cycle through the overall structural coordination design, and cooperate with the scraping wall frame to conveniently scrape the materials accumulated on the inner wall of the stirring chamber, so that the stirring force is more uniform and the mixing effect is effectively improved. At the same time, the new food material can be conveniently and directly added to the material pile between the first stirring blade and the second stirring blade through the feed trough and the guide trough, so that the new and old materials can be quickly mixed in coordination with the movement of the first stirring blade and the second stirring blade;

[0016] And when sampling is performed after mixing is completed, the external negative pressure device is directly connected to the feed trough, and the material inside the pile between the first stirring blade and the second stirring blade is conveniently and directly extracted through the guide trough, effectively ensuring that a uniformly mixed sample material representing the overall composition can be extracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the efficient sample preparation and stirring device provided by the utility model;

[0019] Figure 2 A structural sectional view of a sample preparation box of a high-efficiency sample preparation and stirring device provided by the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the inner side of the sample preparation box of the high-efficiency sample preparation and stirring device provided by the utility model;

[0021] Figure 4 The utility model provides a structural cross-sectional view of a scraping frame of a high-efficiency sample preparation and stirring device.

[0022] The markings in the figure are as follows:

[0023] 1. Sample preparation box; 2. Stirring chamber; 3. Drive chamber; 4. I-shaped top frame; 5. Closing plate; 6. Limit block; 7. Grabbing groove; 8. First rotating shaft; 9. First stirring blade; 10. First flat gear; 11. Second rotating shaft; 12. Second stirring blade; 13. Second flat gear; 14. Support stand; 15. Reducer motor; 16. Support shaft; 17. Half gear; 18. Connecting claw frame; 19. Half gear ring; 20. Scraping frame; 21. Guide pipe; 22. Feed trough; 23. Guide trough. DETAILED DESCRIPTION

[0024] As described in the background technology, the above-mentioned stirring device performs stirring operation by driving the rectangular rod to drive the V-shaped stirring rod. However, during the operation, the rotation direction of the V-shaped stirring rod is single, and the stirring force of the upper and lower layers in the stirring barrel is uneven, which causes some food materials to easily accumulate in a certain place and the mixing effect is not good. At the same time, when new food materials are added during the stirring process, the newly added materials flow to the surface and are not convenient to quickly penetrate into the material pile that has been mixed for a period of time, resulting in uneven mixing of new and old materials during sampling.

[0025] In order to solve this technical problem, the utility model provides a high-efficiency sample preparation and stirring device, which is applied to food inspection and testing;

[0026] The utility model comprises a sample preparation box 1, wherein a stirring chamber 2 and a driving chamber 3 are respectively provided at the upper and lower ends of the sample preparation box 1, an I-shaped top frame 4 is fixed at the upper end of the sample preparation box 1, a first rotating shaft 8 is rotatably connected at the center of the I-shaped top frame 4, a first stirring blade 9 is fixed to the outer side of the lower end of the first rotating shaft 8, a first spur gear 10 is fixed to the outer side of the upper end of the first rotating shaft 8 and located at the upper end of the I-shaped top frame 4, a second rotating shaft 11 is rotatably connected at the center of the sample preparation box 1, a second stirring blade 12 is fixed to the outer side of the upper end of the second rotating shaft 11 and located at the inner side of the stirring chamber 2, a second spur gear 13 is fixed to the outer side of the lower end of the second rotating shaft 11 and located at the inner side of the driving chamber 3, a driving assembly is arranged on the outer sides of the first spur gear 10 and the second spur gear 13, a scraping frame 20 is fixed to the outer side of the second rotating shaft 11 and located at the inner side of the stirring chamber 2, and the outer side of the scraping frame 20 is in contact with the inner side of the stirring chamber 2.

[0027] The efficient sample preparation and stirring device provided by the utility model, through the overall structural coordination design, can drive the first stirring blade 9 and the second stirring blade 12 to perform positive and reverse alternating circulation rotation on the upper and lower layers inside the stirring chamber 2 respectively, and cooperate with the scraper frame 20 to facilitate the scraping of materials accumulated on the inner wall of the stirring chamber 2, thereby making the stirring force more uniform and effectively improving the mixing effect.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] Embodiment 1:

[0031] Please refer to Figure 1-4A high-efficiency sample preparation and stirring device comprises a sample preparation box 1, wherein a stirring chamber 2 and a driving chamber 3 are respectively provided at the upper and lower ends of the sample preparation box 1, an I-shaped top frame 4 is fixed at the upper end of the sample preparation box 1, a first rotating shaft 8 is rotatably connected at the center of the I-shaped top frame 4, a first stirring blade 9 is fixed on the outer side of the lower end of the first rotating shaft 8 and located inside the stirring chamber 2, a first flat gear 10 is fixed on the outer side of the upper end of the first rotating shaft 8 and located on the upper end of the I-shaped top frame 4, a second rotating shaft 11 is rotatably connected at the center of the sample preparation box 1, a second stirring blade 12 is fixed on the outer side of the upper end of the second rotating shaft 11 and located inside the stirring chamber 2, and a second flat gear 13 is fixed on the outer side of the lower end of the second rotating shaft 11 and located inside the driving chamber 3;

[0032] In order to facilitate the first rotating shaft 8 and the second rotating shaft 11 to synchronously rotate in a forward and reverse alternating cycle, thereby driving the first stirring blade 9 and the second stirring blade 12 to stir the material inside the stirring chamber 2, so that the stirring force is more uniform and effectively improves the mixing effect, the outer sides of the first flat gear 10 and the second flat gear 13 are both provided with a driving assembly;

[0033] Specifically, a support stand 14 is fixed to the upper end of the I-shaped top frame 4, and the two driving components include a reduction motor 15. The first flat gear 10 and the second flat gear 13 are both provided with a reduction motor 15 on their outer sides. The two reduction motors 15 are respectively fixed to the sample preparation box 1 and the support stand 14. A support shaft 16 is fixed to the output end of each reduction motor 15. A half gear 17 is fixed to the outer side of the two support shafts 16 close to one end. The two half gears 17 are respectively meshed and connected with the first flat gear 10 and the second flat gear 13. A connecting claw frame 18 is fixed to the outer side of the two support shafts 16 away from one end. A half gear ring 19 is provided on the outer side of the two half gears 17. The connecting claw frame 18 is fixed to the half gear ring 19. The two half gear rings 19 are respectively meshed and connected with the first flat gear 10 and the second flat gear 13.

[0034] During the rotation of the second rotating shaft 11, in order to facilitate the scraping of the material adhered to the inner wall of the stirring chamber 2, thereby effectively reducing the accumulation of materials, a scraping frame 20 is fixed on the outer side of the second rotating shaft 11 and located on the inner side of the stirring chamber 2, and the outer side of the scraping frame 20 is in contact with the inner side of the stirring chamber 2;

[0035] When new food materials need to be added during the mixing process, in order to prevent the newly added materials from flowing to the surface, a guide tube 21 is fixed at the center of the outer side of the scraper frame 20, and a feed trough 22 is provided inside the scraper frame 20 and at the upper end of the guide tube 21, and a guide groove 23 is provided inside the guide tube 21. The feed trough 22 is communicated with the inside of the guide groove 23, and the new food materials can be directly added to the material pile between the first stirring blade 9 and the second stirring blade 12 through the feed trough 22 and the guide groove 23, so that the new and old materials can be quickly mixed in coordination with the movement of the first stirring blade 9 and the second stirring blade 12, and when sampling is completed after mixing, the external negative pressure device is directly connected to the feed trough 22, and then the material inside the material pile between the first stirring blade 9 and the second stirring blade 12 is conveniently directly extracted through the guide groove 23, effectively ensuring that the sample material representing the overall composition can be extracted.

[0036] Embodiment 2:

[0037] The high-efficiency sample preparation stirring device provided in Example 1 is further optimized. Specifically, Figure 2 As shown, during the operation of the stirring device, in order to facilitate the sealing of the stirring chamber 2, thereby preventing external impurities from falling into the stirring chamber 2 and contaminating the materials, the lower end of the I-shaped top frame 4 is symmetrically slidably connected with a sealing plate 5. In order to facilitate the grasping of the sealing plate 5 for sliding, a grasping groove 7 is provided inside the two sealing plates 5 at one end away from each other. In order to prevent the sealing plate 5 from being separated from the I-shaped top frame 4 during the sliding process of the sealing plate 5, a limiting block 6 is fixed at the four end corners of the outer side of each sealing plate 5.

[0038] The above electrical components are all electrically connected to the main controller and the power supply, wherein the main controller can be a conventional known device for control such as a computer, and the existing public power connection technology will not be repeated here;

[0039] The use process of the high-efficiency sample preparation and stirring device provided by the utility model is as follows: when it is necessary to stir and mix the food materials in the stirring chamber 2, the two reduction motors 15 are started to drive the two support shafts 16 to rotate, so that the two half gears 17 and the two half gear rings 19 are rotated synchronously, and the two half gears 17 are respectively meshed with the first flat gear 10 and the second flat gear 13, and the two half gear rings 19 are respectively meshed with the first flat gear 10 and the second flat gear 13, so that the first flat gear 10 and the second flat gear 13 are rotated in a positive and reverse alternating cycle, and then the first stirring blade 9 and the second stirring blade 12 are coordinated to stir the upper and lower layers inside the stirring chamber 2, so that the stirring force is more uniform and the mixing effect is effectively improved, and at the same time, the scraping frame 20 is used to scrape the materials adhered to the inner wall of the stirring chamber 2 to avoid material accumulation;

[0040] At the same time, new food materials are conveniently and directly introduced into the material pile between the first stirring blade 9 and the second stirring blade 12 through the feed trough 22 and the guide trough 23, so as to cooperate with the movement of the first stirring blade 9 and the second stirring blade 12 to facilitate the rapid mixing of new and old materials. When sampling is completed after mixing, the external negative pressure device is directly connected to the feed trough 22, and then the material inside the material pile between the first stirring blade 9 and the second stirring blade 12 is conveniently and directly extracted through the guide trough 23, effectively ensuring that a uniformly mixed sample material representing the overall composition can be extracted.

Claims

1. A high-efficiency sample preparation stirring device, characterized in that: The invention comprises a sample preparation box (1), wherein the upper and lower ends of the sample preparation box (1) are respectively provided with a stirring chamber (2) and a driving chamber (3), an I-shaped top frame (4) is fixed to the upper end of the sample preparation box (1), a first rotating shaft (8) is rotatably connected at the center of the I-shaped top frame (4), a first stirring blade (9) is fixed to the outer side of the lower end of the first rotating shaft (8), a first flat gear (10) is fixed to the outer side of the upper end of the first rotating shaft (8) and located at the upper end of the I-shaped top frame (4), and a first rotating shaft (8) is rotatably connected at the center of the sample preparation box (1). A second rotating shaft (11), a second stirring blade (12) is fixed on the outer side of the upper end of the second rotating shaft (11) and located inside the stirring chamber (2), a second spur gear (13) is fixed on the outer side of the lower end of the second rotating shaft (11) and located inside the driving chamber (3), a driving assembly is arranged on the outer side of the first spur gear (10) and the second spur gear (13), a scraper frame (20) is fixed on the outer side of the second rotating shaft (11) and located inside the stirring chamber (2), and the outer side of the scraper frame (20) is in contact with the inner side of the stirring chamber (2).

2. The high-efficiency sample preparation stirring device according to claim 1, characterized in that: A supporting stand (14) is fixed to the upper end of the I-shaped top frame (4).

3. The high-efficiency sample preparation stirring device according to claim 2, characterized in that: The two driving components each comprise a reduction motor (15), the first spur gear (10) and the second spur gear (13) are each provided with a reduction motor (15) on their outer sides, the two reduction motors (15) are respectively fixed to the sample preparation box (1) and the support stand (14), a support shaft (16) is fixed to the output end of each reduction motor (15), a half gear (17) is fixed to the outer sides of the two support shafts (16) close to each other, the two half gears (17) are respectively meshed and connected with the first spur gear (10) and the second spur gear (13), a connecting claw frame (18) is fixed to the outer sides of the two support shafts (16) away from each other, a half gear ring (19) is provided on the outer sides of the two half gears (17), the connecting claw frame (18) is fixed to the half gear ring (19), and the two half gear rings (19) are respectively meshed and connected with the first spur gear (10) and the second spur gear (13).

4. The high-efficiency sample preparation stirring device according to claim 1, characterized in that: A flow guide pipe (21) is fixed at the center of the outer side of the scraping frame (20).

5. The high-efficiency sample preparation stirring device according to claim 4, characterized in that: A feed trough (22) is provided inside the scraper frame (20) and at the upper end of the guide pipe (21), a guide groove (23) is provided inside the guide pipe (21), and the feed trough (22) is communicated with the inside of the guide groove (23).

6. The high-efficiency sample preparation stirring device according to claim 1, characterized in that: The lower end of the I-shaped top frame (4) is symmetrically slidably connected to a sealing plate (5), and a gripping groove (7) is provided inside the two sealing plates (5) at one end away from each other, and a limiting block (6) is fixed at the four end corners of the outer side of each sealing plate (5).

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