Sterile sampling device for food sampling

Abstract

The invention discloses a sterile sampling device for food sampling, and relates to the technical field of food sampling. The device comprises a sampling rod, a connecting shaft is rotatably mounted in the sampling rod, a first gear is fixedly mounted on the connecting shaft, the first gear is meshed with a rotating mechanism, the rotating mechanism comprises a second gear meshed with the first gear, a ratchet wheel is fixedly mounted in the second gear, the ratchet wheel is meshed with a pawl, and a rotating shaft is fixedly mounted on the pawl. The rotating shaft is fixedly provided with a worm, the worm is meshed with a transmission mechanism, the transmission mechanism is used for controlling the sealing plate to move, and the sealing plate is fixedly provided with a sampling box. Through the design of a ratchet wheel, a pawl and a worm and worm gear transmission mechanism, accurate control over the sampling box is achieved, the sampling mechanism in the first sampling chamber or the second sampling chamber can be selectively activated through rotation of the connecting shaft, the flexibility of single sampling or secondary sampling at the same depth is ensured, the sampling accuracy and efficiency are improved, and the sampling efficiency is improved. And food sampling is more scientific and normative.

Description

Technical Field

[0001] The present invention belongs to the technical field of food sampling. Specifically, it particularly relates to a sterile sampling device for food sampling. Background Art

[0002] Food testing is a testing technology for researching and evaluating food, involving many disciplines such as biology and chemistry in the food field. And during the entire food testing process, food sampling is also a crucial link. The quality of sampling determines whether the final test data is accurate. For solid foods, sampling is generally carried out by randomly taking samples from different parts, while for liquid foods, stratified sampling is used. Through these scientific sampling methods, the typicality of the samples can be ensured; and a sterile sampling device for food sampling refers to a device used for collecting samples under sterile conditions during food sampling. Its main purpose is to ensure that the collected samples are not contaminated by microorganisms, so as to be able to truly reflect the quality and safety status of the food.

[0003] Currently, during the food processing process, especially in the production of fermented liquid foods, regular sampling and testing are important links to ensure food safety. During the fermentation process, liquid foods are prone to stratification, resulting in uneven distribution of components and microorganisms at different depths. Therefore, stratified sampling is required to comprehensively evaluate the product quality. The traditional stratified sampling method usually places sampling cups at different depths respectively, opens the sampling cups to fill them with samples and then takes them out. This method requires repeated operations during multi-layer sampling, which is not only cumbersome and inefficient, but also increases the time for the samples to be exposed to the external environment, thereby increasing the risk of bacterial contamination and affecting the accuracy and reliability of the sampling results. Summary of the Invention

[0004] In view of the problems in the related art, the present invention proposes a sterile sampling device for food sampling to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a sterile sampling device for food sampling, including a sampling rod. A connecting shaft is rotatably installed inside the sampling rod. A first gear is fixedly installed on the connecting shaft. The first gear meshes with a rotating mechanism. The rotating mechanism includes a second gear meshing with the first gear. A ratchet is fixedly installed inside the second gear. The ratchet meshes with a pawl. The pawl is fixedly installed on a rotating shaft. A worm is fixedly installed on the rotating shaft. The worm meshes with a transmission mechanism. The transmission mechanism is used to control the movement of a sealing plate. The sealing plate is fixedly installed with a sampling box.

[0007] Further, a cover plate is movably installed above the sampling rod. A handle is rotatably installed on the cover plate. A square block is fixedly installed on the handle. The square block is slidably connected inside a square groove, and the square groove is opened at the top of the connecting shaft.

[0008] Further, a partition plate is fixedly installed inside the sampling rod. The connecting shaft is rotatably installed inside the partition plate. The partition plate divides the interior of the sampling rod into a first sampling chamber and a second sampling chamber.

[0009] Further, one end of a rod member is slidably connected to the second gear. The other end of the rod member is fixedly installed on a disc. The disc is fixedly installed on a rotating shaft, and the rotating shaft is rotatably installed inside the sampling rod.

[0010] Further, the transmission mechanism includes a worm gear meshing with a worm. The worm gear is rotatably installed on a reciprocating threaded rod. One end of the reciprocating threaded rod is rotatably installed on the partition plate, and the other end is fixedly installed with a limit ring.

[0011] Further, the reciprocating threaded rod is threadedly connected to a sliding block. A connecting rod is fixedly installed on the sliding block, and the connecting rod is in contact with the sealing plate.

[0012] Further, one end of a telescopic rod is fixedly installed on the sliding block, and the other end of the telescopic rod is fixedly installed on the partition plate.

[0013] Further, the directions of the ratchets and pawls in the first sampling chamber and the second sampling chamber are set in opposite directions. The sealing plate is slidably connected to the sampling rod.

[0014] Further, the sampling rod is made of stainless steel. Several groups of the rotating mechanism and the transmission mechanism are provided. The first sampling chamber and the second sampling chamber are provided with first holes. The sampling box is provided with second holes. The first holes and the second holes are communicated. A three-way pipe is fixedly installed inside the sampling rod, and the three-way pipe is communicated with the first holes. Stirring rods are fixedly installed inside the first sampling chamber and the second sampling chamber at the bottommost layer.

[0015] The present invention has the following beneficial effects compared with the prior art:

[0016] 1. An aseptic sampling device for food sampling proposed by the present invention realizes precise control of the sampling box through an innovative ratchet and pawl and worm and worm gear transmission mechanism design. In the device, the rotation of the connecting shaft can selectively activate the sampling mechanism in the first sampling chamber or the second sampling chamber, ensuring the flexibility of single sampling or secondary sampling at the same depth. This design not only simplifies the operation process but also improves the accuracy and efficiency of sampling, making food sampling more scientific and standardized. In addition, by setting multiple sets of rotating mechanisms and transmission mechanisms, multi-layer sampling is realized, further improving the accuracy and reliability of subsequent detection.

[0017] 2. The aseptic sampling device of the present invention also has the advantages of a compact structure and simple operation. The sampling rod ingeniously integrates components such as a rotating shaft, a worm, a worm gear, and a reciprocating threaded rod inside to form a compact and efficient transmission system. The operator only needs to simply rotate the connecting shaft, and through a series of precise mechanical linkages, the automatic movement of the sampling box and the collection of samples can be achieved. At the same time, the design of the limit ring and the telescopic rod in the device effectively prevents the components from falling off and rotating, ensuring the stability and reliability of the entire sampling process. In addition, the sampling rod made of stainless steel and the aseptic design ensure the asepticity and safety of sampling, are applicable to various food sampling scenarios, and have broad application prospects.

[0018] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the following drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural diagram of the internal parts of the present invention;

[0022] Figure 3 It is an enlarged schematic diagram at A of the present invention;

[0023] Figure 4 It is a cross-section of the sampling rod of the present invention Figure 1 ;

[0024] Figure 5 It is an enlarged schematic diagram at B of the present invention;

[0025] Figure 6 It is a cross-section of the sampling rod of the present invention Figure 2 ;

[0026] Figure 7 It is an enlarged schematic view of part C of the present invention;

[0027] Figure 8 It is a structural diagram of some parts of the present invention;

[0028] Figure 9 It is a schematic view of the cover plate of the present invention;

[0029] Figure 10 It is a schematic view of the sampling box of the present invention;

[0030] Figure 11 It is a bottom sectional view of the sampling rod of the present invention.

[0031] In the drawings, the list of components represented by each reference numeral is as follows:

[0032] 1. Sampling rod; 2. Connecting shaft; 3. First gear; 4. Second gear; 5. Ratchet; 6. Pawl; 7. Rotating shaft; 8. Worm; 9. Sealing plate; 10. Sampling box; 11. Cover plate; 12. Handle; 13. Square block; 14. Square groove; 15. Partition plate; 16. First sampling chamber; 17. Second sampling chamber; 18. Rod; 19. Disc; 20. Worm gear; 21. Reciprocating threaded rod; 22. Limit ring; 23. Sliding block; 24. Connecting rod; 25. Telescopic rod; 26. First hole; 27. Second hole; 28. Three-way pipe. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the invention will be clearly and completely described in conjunction with the drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the invention.

[0034] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc. indicating the orientation or position relationship are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the invention.

[0035] Please refer to Figures 1 - 10As shown in the figure, the present invention is a sterile sampling device for food sampling, including a sampling rod 1. A connecting shaft 2 is rotatably installed inside the sampling rod 1. A first gear 3 is fixedly installed on the connecting shaft 2. The first gear 3 meshes with a rotating mechanism. The rotating mechanism includes a second gear 4 meshing with the first gear 3. A ratchet 5 is fixedly installed inside the second gear 4. The ratchet 5 meshes with a pawl 6. The pawl 6 is fixedly installed on a rotating shaft 7. A worm 8 is fixedly installed on the rotating shaft 7. The worm 8 meshes with a transmission mechanism. The transmission mechanism is used to control the movement of a sealing plate 9. The sealing plate 9 is fixedly installed with a sampling box 10.

[0036] The working principle of a sterile sampling device for food sampling proposed by the present invention is as follows. When in use, manually operate the device to make the bottom of the sampling rod 1 enter the liquid food to be sampled. Then rotate the connecting shaft 2, which drives the first gear 3 to rotate, and further drives the second gear 4 to rotate, thus driving the ratchet 5 to rotate, and further driving the pawl 6 to rotate, thus driving the rotating shaft 7 to rotate, and further driving the worm 8 to rotate, thus driving the transmission mechanism to move, and further making the sealing plate 9 move away from the sampling rod 1, thus driving the sampling box 10 to move away from the sampling rod 1, and further enabling the liquid food to flow into the sampling box 10, thus completing the sampling work.

[0037] In one embodiment, for the above-mentioned sampling rod 1, a cover plate 11 is movably installed above the sampling rod 1. A handle 12 is rotatably installed on the cover plate 11. A square block 13 is fixedly installed on the handle 12. The square block 13 is slidably connected inside a square groove 14. The square groove 14 is opened at the top of the connecting shaft 2.

[0038] The working principle of a sterile sampling device for food sampling proposed by the invention is as follows. First, cover the cover plate 11 above the sampling rod 1 and make the square block 13 slidably connected inside the square groove 14. Then the operator rotates the handle 12, which drives the square block 13 to rotate, and further drives the square groove 14 and the connecting shaft 2 to rotate.

[0039] In one embodiment, for the above-mentioned sampling rod 1, a partition plate 15 is fixedly installed inside the sampling rod 1. The connecting shaft 2 is rotatably installed inside the partition plate 15. The partition plate 15 divides the inside of the sampling rod 1 into a first sampling chamber 16 and a second sampling chamber 17.

[0040] In one embodiment, for the above-mentioned second gear 4, one end of a rod member 18 is slidably connected to the second gear 4. The other end of the rod member 18 is fixedly installed on a disc 19. The disc 19 is fixedly installed on the rotating shaft 7. The rotating shaft 7 is rotatably installed inside the sampling rod 1.

[0041] In one embodiment, for the above-mentioned transmission mechanism, the transmission mechanism includes a worm wheel 20 meshing with a worm 8. The worm wheel 20 is rotatably mounted on a reciprocating threaded rod 21. One end of the reciprocating threaded rod 21 is rotatably mounted on a partition plate 15, and the other end is fixedly mounted with a limit ring 22.

[0042] In one embodiment, for the above-mentioned reciprocating threaded rod 21, a sliding block 23 is threadedly connected to the reciprocating threaded rod 21. The sliding block 23 is fixedly mounted with a connecting rod 24, and the connecting rod 24 is in contact with the sealing plate 9.

[0043] In one embodiment, for the above-mentioned sliding block 23, one end of a telescopic rod 25 is fixedly mounted on the sliding block 23, and the other end of the telescopic rod 25 is fixedly mounted on the partition plate 15.

[0044] The working principle of a sterile sampling device for food sampling proposed by the invention is that the rotation of the worm 8 drives the worm wheel 20 to rotate, which in turn drives the reciprocating threaded rod 21 to rotate, thereby driving the sliding block 23 to move back and forth following the rotation of the reciprocating threaded rod 21, which in turn drives the connecting rod 24 to move back and forth, so as to drive the sealing plate 9 to move back and forth by using the connecting rod 24, and further enable the sealing plate 9 to move away from or close to the inside of the sampling rod 1.

[0045] It should be noted that through the setting of the limit ring 22, the sliding block 23 can be prevented from disengaging from the reciprocating threaded rod 21. At the same time, by using the design of the telescopic rod 25, it can play a role in fixing and guiding the movement of the sliding block 23, preventing the sliding block 23 from rotating following the reciprocating threaded rod 21.

[0046] It should be particularly noted that when the connecting shaft 2 rotates one circle, it just drives the sliding block 23 to make a reciprocating movement on the reciprocating threaded rod 21, thereby driving the sealing plate 9 and the sampling box 10 to make a reciprocating movement, and then completing the sampling operation.

[0047] In one embodiment, for the above-mentioned first sampling chamber 16, the directions of the ratchet wheels 5 and the ratchet pawls 6 in the first sampling chamber 16 and the second sampling chamber 17 are arranged in opposite directions. The sealing plate 9 is slidably connected to the sampling rod 1.

[0048] The working principle of a sterile sampling device for food sampling proposed by the invention is that the directions of the ratchet wheels 5 and pawls 6 in the first sampling chamber 16 and the second sampling chamber 17 are set in opposite directions. Therefore, when the connecting shaft 2 drives the first gear 3 to rotate forward, the ratchet wheel 5 inside the first sampling chamber 16 rotates in the reverse direction, so it will not engage with the pawl 6, and thus will not drive the rotating shaft 7 to rotate, and will not cause the sealing plate 9 and the sampling box 10 inside the first sampling chamber 16 to perform the sampling operation. On the contrary, at this time, the ratchet wheel 5 inside the second sampling chamber 17 rotates forward, engages with the pawl 6, drives the rotating shaft 7 to rotate, and then performs the sampling operation.

[0049] Through the above working principle, when the connecting shaft 2 rotates forward, the sealing plate 9 and the sampling box 10 inside the first sampling chamber 16 perform the sampling operation. When the connecting shaft 2 rotates in the reverse direction, the sealing plate 9 and the sampling box 10 inside the second sampling chamber 17 perform the sampling operation. Thus, when a single sampling is required, the operator only needs to casually rotate the connecting shaft 2 one circle. When secondary sampling is required at the same depth for comparison, the operator only needs to rotate the connecting shaft 2 one circle forward and one circle in the reverse direction.

[0050] In one embodiment, for the above-mentioned sampling rod 1, the sampling rod 1 is made of stainless steel. A plurality of groups of rotating mechanisms and transmission mechanisms are provided. The first sampling chamber 16 and the second sampling chamber 17 are provided with first holes 26, and the sampling box 10 is provided with second holes 27. The first holes 26 and the second holes 27 are connected. A three-way pipe 28 is fixedly installed inside the sampling rod 1, and the three-way pipe 28 is connected to the first holes 26. Stirring rods 29 are fixedly installed inside the first sampling chamber 16 and the second sampling chamber 17 at the bottom layer.

[0051] The working principle of a sterile sampling device for food sampling proposed by the invention is that by providing a plurality of groups of rotating mechanisms and transmission mechanisms, multi-layer sampling is achieved, improving the accuracy of subsequent detection.

[0052] It should be noted that after the sampling box 10 completes sampling and is stored inside the sampling rod 1, the sampled liquid food flows out along the second holes 27, then flows out through the first holes 26, and finally, under the action of gravity, all flows into the first sampling chamber 16 and the second sampling chamber 17 at the bottom layer. The stirring rods 29 are used for mixing and stirring. Finally, the operator can open the three-way pipe 28 to take out the mixed liquid sample.

[0053] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0054] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes the embodiments in order to better explain the principle and practical application of the invention, so that those skilled in the art can well understand and utilize the invention. The invention is only limited by the claims and their full scope and equivalents.

Claims

1. A sterile sampling device for food sampling, comprising a sampling rod (1), characterized in that: The sampling rod (1) is internally rotatably mounted with a connecting shaft (2), the connecting shaft (2) is fixedly mounted with a first gear (3), the first gear (3) is meshed with a rotating mechanism, the rotating mechanism comprises a second gear (4) meshed with the first gear (3), a ratchet (5) is fixedly mounted inside the second gear (4), the ratchet (5) is meshed with a pawl (6), the pawl (6) is fixedly mounted with a rotating shaft (7), the rotating shaft (7) is fixedly mounted with a worm (8), the worm (8) is meshed with a transmission mechanism, the transmission mechanism is used to control the movement of a sealing plate (9), the sealing plate (9) is fixedly mounted with a sampling box (10); The sampling rod (1) is manually operated to enter the liquid food, and the connecting shaft (2) is rotated to drive the first gear (3), the second gear (4), the ratchet (5), the ratchet pawl (6), the rotating shaft (7) and the worm (8), and the transmission mechanism is driven to make the sealing plate (9) and the sampling box (10) move away from the sampling rod (1), and the liquid food flows into the sampling box (10), thereby completing the sampling.

2. A sterile sampling device for food sampling according to claim 1, characterized in that: A cover plate (11) is movably mounted above the sampling rod (1), a handle (12) is rotatably mounted on the cover plate (11), a square block (13) is fixedly mounted on the handle (12), and the square block (13) is slidably connected to the inside of a square groove (14), and the square groove (14) is opened at the top of the connecting shaft (2).

3. A sterile sampling device for food sampling according to claim 2, characterized in that: A partition plate (15) is fixedly mounted inside the sampling rod (1), and the connecting shaft (2) is rotatably mounted inside the partition plate (15). The partition plate (15) divides the interior of the sampling rod (1) into a first sampling chamber (16) and a second sampling chamber (17).

4. A sterile sampling device for food sampling according to claim 3, characterized in that: The second gear (4) is slidably connected to one end of a rod (18), the other end of the rod (18) is fixedly mounted on a disc (19), the disc (19) is fixedly mounted on a rotating shaft (7), and the rotating shaft (7) is rotatably mounted inside the sampling rod (1).

5. A sterile sampling device for food sampling according to claim 4, characterized in that: The transmission mechanism comprises a worm wheel (20) meshing with the worm (8); the worm wheel (20) is rotatably mounted on a reciprocating threaded rod (21); one end of the reciprocating threaded rod (21) is rotatably mounted on a partition plate (15); and the other end is fixedly mounted with a limit ring (22).

6. A sterile sampling device for food sampling according to claim 5, characterized in that: The reciprocating threaded rod (21) is threadedly connected to a sliding block (23), and a connecting rod (24) is fixedly installed on the sliding block (23), and the connecting rod (24) is in contact with the sealing plate (9).

7. A sterile sampling device for food sampling according to claim 6, characterized in that: One end of a telescopic rod (25) is fixedly mounted on the sliding block (23), and the other end of the telescopic rod (25) is fixedly mounted on the partition plate (15).

8. The aseptic sampling device for food sampling according to claim 3, characterized in that: The directions of the ratchet (5) and the ratchet pawl (6) in the first sampling chamber (16) and the second sampling chamber (17) are opposite, and the sealing plate (9) is slidably connected to the sampling rod (1).

9. A sterile sampling device for food sampling according to claim 8, characterized in that: The sampling rod (1) is made of stainless steel, the rotating mechanism and the transmission mechanism are both provided with a plurality of groups, the first sampling chamber (16) and the second sampling chamber (17) are provided with a first hole (26), the sampling box (10) is provided with a second hole (27), the first hole (26) and the second hole (27) are connected, a three-way pipe (28) is fixedly installed inside the sampling rod (1), the three-way pipe (28) is connected with the first hole (26), and a stirring rod (29) is fixedly installed inside the first sampling chamber (16) and the second sampling chamber (17) at the bottom layer.

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