Sample screening device for food testing

Abstract

The utility model relates to food detection technical field especially is food detection with sample screening device, including the casing, the casing upper end is fixedly installed with the feeding cylinder through bolt, the inside of feeding cylinder places the screen cloth, and the feeding cylinder lower extreme is fixedly installed with the slow -release bucket still, the casing inboard bottom fixed mounting has the feeding cylinder, the feeding cylinder upper end one side fixed mounting has the fixed plate, the fixed plate end and casing side wall fixed link, and the casing one side fixed mounting has the collection box, the collection box side wall fixed mounting has the ventilation net, and the casing other side fixed mounting has the first fan, and this food detection with sample screening device can remove the impurity in millet, is worth promoting.

Description

Technical Field

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

[0002] Millet is an ancient and nutritious grain, often used to make nutritious porridge, as well as in dishes like rice crackers, vinegar, and noodles. With increasing public concern about food safety, ensuring the safety of millet-related foods is crucial to meeting consumers' health needs; therefore, quality testing of millet has become a vital aspect.

[0003] Before testing millet, the millet sample needs to be pre-treated by using a sieving device to remove impurities. During the sieving process, the millet sample is placed inside the sieving device, where larger impurities are trapped by the sieve mesh, allowing the millet particles to pass precisely through the sieve openings, thus completing the initial impurity removal.

[0004] However, using a sieve to remove impurities from the inside of a millet sample relies entirely on the size of the mesh. It can only intercept impurities larger than the millet grains, while impurities smaller than the millet grains cannot be intercepted. These impurities remain in the millet sample, affecting subsequent operations. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where sieve screening relies on mesh size for impurity removal, resulting in poor impurity removal efficiency. This invention provides a sample sieving device for food testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design a sample screening device for food testing, including a housing. A feed cylinder is fixedly installed on the upper end of the housing by bolts. A screen is placed inside the feed cylinder. A slow-release hopper is also fixedly installed on the lower end of the feed cylinder. A feeding cylinder is fixedly installed on the bottom inner side of the housing. A fixing plate is fixedly installed on one side of the upper end of the feeding cylinder. The end of the fixing plate is fixedly connected to the side wall of the housing. A collection box is fixedly installed on one side of the housing. A ventilation screen is fixedly installed on the side wall of the collection box. A first fan is fixedly installed on the other side of the housing.

[0007] Preferably, a vibration motor is fixedly installed on the outside of the slow-release hopper.

[0008] Preferably, a second fan is fixedly installed on the side wall of the housing, a flow groove is opened on one side wall of the feeding cylinder, the second fan is located outside the flow groove, and a filter screen is fixedly installed on the other side wall of the feeding cylinder.

[0009] Preferably, a guide plate is fixedly installed on the inner side of the upper end of the feeding cylinder. A pair of guide plates are provided and installed on opposite side wall surfaces respectively, and the lower end of the guide plate is inclined downward.

[0010] Preferably, a baffle is also fixedly installed inside the shell, and an elastic ring is fixedly installed in the middle of the baffle, the elastic ring being in contact with the outer wall of the slow-release hopper.

[0011] The beneficial effects of the food testing sample sieving device proposed in this utility model are as follows: When the food testing sample sieving device is working, the sieve can block large-volume impurities in millet, preventing large impurities from being unable to be removed by air separation. The slow-release bucket can maintain the material in a thin layer with a large area falling, which is convenient for air separation by the first fan, which can blow away light and small impurities in millet and complete the impurity removal operation. The feeding cylinder can collect millet to complete the final feeding. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the food testing sample sieving device proposed in this utility model. Figure 2 This is a longitudinal cross-sectional view of the sample sieving device for food testing proposed in this utility model. Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure at point AA.

[0013] In the diagram: 1. Shell; 2. Feed cylinder; 3. Slow-release hopper; 4. Screen; 5. Vibrating motor; 6. First fan; 7. Feeding cylinder; 8. Guide plate; 9. Fixing plate; 10. Collection box; 11. Ventilation screen; 12. Flow channel; 13. Second fan; 14. Filter screen; 15. Baffle; 16. Elastic ring. Detailed Implementation

[0014] 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.

[0015] Example 1: Refer to Figure 1-3A sample sieving device for food testing includes a housing 1. A feed cylinder 2 is bolted to the upper end of the housing 1, through which millet is fed. A screen 4 is placed inside the feed cylinder 2, which traps impurities larger than the millet, such as leaves, large pieces of straw, and other grains. Because the mesh size of the screen 4 is relatively large, it is not prone to clogging. The feed cylinder 2 is easily detached from the housing 1, allowing for cleaning or replacement of its interior and the screen 4. A slow-release hopper 3 is also fixed to the lower end of the feed cylinder 2. The bottom of the slow-release hopper 3 has a long, narrow outlet. When the millet passes through the bottom of the slow-release hopper, it falls in a thin, wide stream, like a water curtain. This falling millet forms a thin, planar structure, ensuring that all materials are directly exposed to the airflow when the first motor 6 blows air, maximizing the air-separation effect. A vibration motor 5 is fixedly installed on the outside of the slow-release hopper 3. When the vibration motor 5 is started, it can drive the slow-release hopper 3 and the feed cylinder 2 to vibrate. This not only prevents the millet from clogging inside the slow-release hopper 3, but also agitates the millet above the screen 4, allowing the millet to pass through the screen 4 quickly and effectively preventing the screen 4 aperture from clogging.

[0016] A feeding cylinder 7 is fixedly installed on the bottom inner side of the shell 1. Millet falling from the bottom of the slow-release hopper 3 will enter the feeding cylinder 7. A collection box 10 is fixedly installed on one side of the shell 1. The collection box 10 collects small impurities for easy cleaning. A ventilation net 11 is fixedly installed on the side wall of the collection box 10. The ventilation net 11 can provide ventilation, and the small mesh size can prevent small impurities from flying out. A first fan 6 is fixedly installed on the other side of the shell 1. Activating the first fan 6 can perform air separation on the falling millet. According to the density difference between millet and impurities, the air force of the first fan 6 can be adjusted according to the specific situation to blow out the impurities inside the millet, thus achieving the function of impurity removal. The blown-out impurities will fall into the collection box 10, while the millet will fall downward into the feeding cylinder 7 under the action of gravity.

[0017] A fixing plate 9 is fixedly installed on one side of the upper end of the feeding cylinder 7. The end of the fixing plate 9 is fixedly connected to the side wall of the housing 1. The fixing plate 9 acts as a barrier to prevent impurities from falling into the gap between the housing 1 and the feeding cylinder 7. A baffle 15 is also fixedly installed inside the housing 1. An elastic ring 16 is fixedly installed in the middle of the baffle 15. The elastic ring 16 fits against the outer wall of the slow-release hopper 3. Under the elastic buffer of the elastic ring 16, the baffle 15 will not affect the vibration of the slow-release hopper 3. The baffle 15 can block the space at the top of the housing 1. The baffle 15 and the fixing plate 9 can reduce the space inside the housing 1, preventing dust generated during the air separation process from spreading arbitrarily inside the housing 1. This reduces the difficulty of cleaning and allows the air blown by the first blower 6 to be more concentrated for air separation.

[0018] Working principle: When this food testing sample screening device is working, millet containing impurities is put into the feed cylinder 2. The screen 4 blocks large impurities mixed in with the millet. The millet passes through the screen 4 and enters the slow release hopper 3. The vibration motor 5 drives the slow release hopper 3 to vibrate. The vibration of the slow release hopper 3 can prevent the millet from clogging. The millet in the slow release hopper 3 falls in a thin and wide state. At the same time, the first fan 6 is started to perform air separation on the falling millet, blowing the impurities into the collection box 10. The millet falls into the feeding cylinder 7 under its own gravity. The millet that has been screened is discharged and collected through the feeding cylinder 7.

[0019] Example 2: In Example 1, the millet contains impurities such as small grain husk fragments. These impurities are small in size, but their density is larger than that of other grains, making them difficult to remove completely during air separation. Some of these impurities will remain mixed in with the millet and fall into the feeding cylinder 7. Therefore, this example is proposed. (Refer to...) Figure 1-3 In another preferred embodiment of this utility model, based on embodiment 1, a second fan 13 is fixedly installed on the side wall of the housing 1, and a flow groove 12 is opened on one side wall of the feeding cylinder 7. When the second fan 13 is started, the millet inside the feeding cylinder 7 can be air-sorted again. The second fan 13 is located outside the flow groove 12, and a filter screen 14 is fixedly installed on the other side wall of the feeding cylinder 7. The pore size of the filter screen 14 is smaller than the particle size of the millet. It is required that the air force of the second fan 13 is greater than that of the first fan 6. Although this may blow the millet, the millet will not pass through the filter screen 14 due to the obstruction of the filter screen 14. Both the millet and impurities will come into contact with the filter screen 4 under the action of air force. Small-diameter impurities will be removed by passing through the filter screen 4, and the blocked millet will be discharged and collected through the bottom of the feeding cylinder 7.

[0020] A guide plate 8 is fixedly installed on the inner side of the upper end of the feeding cylinder 7. A pair of guide plates 8 are provided and are respectively installed on the opposite side wall surfaces. The lower end of the guide plate 8 is inclined downward. 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 sieving device for food testing, comprising a housing (1), characterized in that, The upper end of the housing (1) is fixedly installed with a feed cylinder (2) by bolts. A screen (4) is placed inside the feed cylinder (2). A slow-release hopper (3) is also fixedly installed at the lower end of the feed cylinder (2). A feeding cylinder (7) is fixedly installed at the bottom inside the housing (1). A fixing plate (9) is fixedly installed on one side of the upper end of the feeding cylinder (7). The end of the fixing plate (9) is fixedly connected to the side wall of the housing (1). A collection box (10) is fixedly installed on one side of the housing (1). A ventilation net (11) is fixedly installed on the side wall of the collection box (10). A first fan (6) is fixedly installed on the other side of the housing (1).

2. The food testing sample sieving device according to claim 1, characterized in that, A vibration motor (5) is fixedly installed on the outside of the slow-release hopper (3).

3. The food testing sample sieving device according to claim 1, characterized in that, A second fan (13) is fixedly installed on the side wall of the housing (1). A flow groove (12) is opened on one side wall of the feeding cylinder (7). The second fan (13) is located outside the flow groove (12). A filter screen (14) is fixedly installed on the other side wall of the feeding cylinder (7).

4. The food testing sample sieving device according to claim 1, characterized in that, A guide plate (8) is fixedly installed on the inner side of the upper end of the feeding cylinder (7). A pair of guide plates (8) are provided and installed on opposite side wall surfaces respectively. The lower end of the guide plate (8) is inclined downward.

5. The food testing sample sieving device according to claim 1, characterized in that, A baffle (15) is also fixedly installed inside the shell (1), and an elastic ring (16) is fixedly installed in the middle of the baffle (15). The elastic ring (16) is in contact with the outer wall of the slow-release bucket (3).

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