A quantitative detection device for soybean ketone in soy sauce

Abstract

The application discloses a kind of quantitative detection equipment of soy sauce ketone in soy sauce, belong to soy sauce detection sampling technical field, including bottom plate and top plate fixed on bottom plate by support, two mounting holes are formed in the top plate, two The storage barrels rotatable lifting are arranged in the mounting hole, the bottom wall of the storage barrel is opened and has an open mouth, the bottom plate is symmetrically provided with support rod, the top of the support rod is fixed with support plate, two The support plate is located in two storage barrels respectively and is matched with the size of storage barrel inner cavity, the top wall of two storage barrels is all opened and has sampling hole;Two liftable samplers are arranged on the top plate, and a locking mechanism is arranged between the sampler and the storage barrel;The application does not need to be sampled by traditional pipette multiple times, greatly reduces the operation step, reduces the probability of human error caused by complicated operation process, improves the convenience and efficiency of sampling operation when detecting.

Description

Technical Field

[0001] This invention relates to the field of soy sauce detection and sampling technology, specifically to a quantitative detection device for soy ketones in soy sauce. Background Technology

[0002] Soy sauce ketones (cyclic homofuranones) possess a typical caramel aroma and are considered key aroma active substances in soy sauce. Therefore, rapid and accurate quantification of soy sauce ketones in soy sauce can assist in the judgment and monitoring of soy sauce quality. Generally, the content of soy sauce ketones in soy sauce is approximately 0.1–50 mg / L. Currently, the main methods used to detect aroma components such as soy sauce ketones in soy sauce include pretreatment methods such as LLE (liquid-liquid extraction), SDE (simultaneous distillation-extraction), SPME (headspace solid-phase microextraction), and SAFE (solvent-assisted distillation) combined with GCMS (gas chromatography-mass spectrometry).

[0003] Regardless of the method used, soy sauce must first be sampled and extracted. Currently, a pipette is generally used to extract soy sauce from the mixed soy sauce, along with a certain amount of dichloromethane, and then transfer it into a separatory funnel. However, the commonly used pipette sizes are 5, 10, 25, 50, and 75, while the volume required for soy sauce extraction is relatively large, generally 100 ml. Therefore, multiple samplings are required to obtain the necessary amount of soy sauce. This involves many manual steps and makes the sample susceptible to contamination. Furthermore, to ensure the accuracy of the test results, multiple samples are often prepared for testing to reduce errors, which greatly increases the number of samplings and affects the test results. Summary of the Invention

[0004] The purpose of this invention is to provide a quantitative detection device for soy ketones in soy sauce, which solves the following technical problems: existing sampling methods are relatively simple, cumbersome and prone to sample contamination.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A quantitative detection device for soy ketones in soy sauce includes a base plate and a top plate fixed to the base plate by a support column. The top plate has two mounting holes, and each mounting hole contains a rotatable and liftable storage tank. The bottom wall of the storage tank has an opening. Support rods are symmetrically arranged on the base plate, and support plates are fixed to the top of the support rods. The two support plates are located in the two storage tanks respectively and match the inner cavity size of the storage tanks. Sampling holes are provided on the top walls of the two storage tanks.

[0007] The top plate is equipped with two liftable samplers, and a locking mechanism is provided between the samplers and the storage tank.

[0008] As a further embodiment of the present invention: cylinders are symmetrically installed on the upper surface of the top plate, the output shaft of the cylinders is connected to a lifting rod, one end of the two lifting rods is fixed to a lifting plate, and the sampler is installed on the lifting plate.

[0009] As a further aspect of the present invention: the sampler includes a sampling cylinder, the bottom of which is connected to a sampling tube, a piston is disposed inside the sampling cylinder, a piston rod is connected to the piston, and one end of the piston rod is fixedly connected to a lifting plate.

[0010] As a further embodiment of the present invention: the locking mechanism includes two L-shaped rods and two first wedge blocks. The two L-shaped rods are fixed on both sides of the sampling cylinder, and the two first wedge blocks are fixed on both sides of the top wall of the storage tank. A movable rod is slidably connected to the L-shaped rod. A second wedge block is fixed to one end of the movable rod. A first spring is fitted on the movable rod. One end of the first spring is connected to the second wedge block, and the other end is connected to the L-shaped rod.

[0011] As a further aspect of the present invention: a sleeve is fixed inside the mounting hole, the inner wall of the sleeve is provided with an internal thread, and the outer wall of the storage bucket is provided with an external thread that matches the internal thread.

[0012] As a further aspect of the present invention: a toothed ring is installed at the bottom of the storage hopper, a motor is installed on the base plate, the output shaft of the motor is connected to a telescopic rod, a gear is installed at one end of the telescopic rod, and the gear meshes with two toothed rings.

[0013] As a further aspect of the present invention: a limiting ring is fixed on the gear ring, and the lower surface of the limiting ring is in contact with the upper surface of the gear.

[0014] As a further embodiment of the present invention: a rotating shaft is rotatably mounted on the top plate, the bottom end of the rotating shaft is fixedly connected to a gear, and a crossbeam is fixed at the top end.

[0015] As a further aspect of the present invention: the telescopic rod is connected to the sleeve of the motor output shaft, a second spring is connected inside the sleeve, one end of the second spring is connected to a connecting rod, and one end of the connecting rod is fixedly connected to a gear.

[0016] The beneficial effects of this invention are:

[0017] (1) By setting up a sampler, the present invention can effectively adapt to the large volume requirements required in the soy sauce sampling process. It eliminates the need for multiple sampling operations using traditional pipettes, greatly reducing the hands-on steps and lowering the probability of human error caused by cumbersome operation procedures. It improves the convenience and efficiency of sampling operations. In scenarios where multiple samples need to be prepared to reduce detection errors, there is no need to increase the number of sampling operations due to the limitations of traditional pipette specifications. It can control the overall workload of sampling operations while ensuring the preparation of multiple samples, avoiding operational fatigue or process delays caused by too many sampling operations, and taking into account both error control objectives and efficient advancement of detection work.

[0018] (2) By setting two rotatable and liftable storage bins, before sampling, since the position of the support plate is fixed, the size of the inner cavity can be adjusted by changing the height of the storage bins, so that an appropriate amount of soy sauce and dichloroethane can be placed, avoiding waste caused by excessive sample quantity. In addition, the locking mechanism fixes the sampler during sampling, which facilitates sampling. After sampling, the storage bins rotate to automatically release the lock, which makes it easy to remove the sampler. The operator only needs to use a container to receive the sample, reducing the probability of contact with the sample.

[0019] (3) Since the storage tank can be rotated and raised, the present invention is convenient to control the sample amount at the beginning. On the other hand, after each sampling, the storage tank will automatically drop a certain distance after rotating to unlock, so that the sample liquid level in the storage tank is always maintained at a certain height, so that the sample can be obtained in small quantities each time, reducing the sampling difficulty. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a first-view structural diagram of the entire invention;

[0022] Figure 2 This is a second-view structural diagram of the entire invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the storage tank of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the sampler of the present invention;

[0025] Figure 5 yes Figure 1 Enlarged view of point A in the middle;

[0026] Figure 6 This is a schematic diagram of the internal structure of the telescopic rod of the present invention.

[0027] In the diagram: 1. Base plate; 2. Support column; 3. Top plate; 4. Storage hopper; 5. First wedge block; 6. Support rod; 7. Support plate; 8. Cylinder; 9. Lifting rod; 10. Lifting plate; 11. Sampler; 1101. Sampling cylinder; 1102. Sampling tube; 1103. Piston rod; 1104. Piston; 12. L-shaped rod; 13. Sleeve; 14. External thread; 15. Gear ring; 16. Limiting ring; 17. Motor; 18. Telescopic rod; 1801. Sleeve; 1802. Connecting rod; 1803. Second spring; 19. Gear; 20. Rotating shaft; 21. Crossbeam; 22. Movable rod; 23. Second wedge block; 24. First spring.

[0028] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual size and shape of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 4As shown, this invention is a quantitative detection device for soy ketones in soy sauce, comprising a base plate 1 and a top plate 3 fixed to the base plate 1 by support columns 2. The top plate 3 has two mounting holes, each containing a rotatable and liftable storage tank 4. The bottom wall of the storage tank 4 has an opening. Support rods 6 are symmetrically arranged on the base plate 1, and support plates 7 are fixed to the top of the support rods 6. The two support plates 7 are located inside the two storage tanks 4 respectively and match the inner dimensions of the storage tanks 4. Sampling holes are provided on the top walls of both storage tanks 4. The upper surface of the top plate 3 is symmetrically equipped with... The system is equipped with cylinder 8, the output shaft of which is connected to lifting rods 9. One end of each of the two lifting rods 9 is fixed to a lifting plate 10. A sampler 11 is mounted on the lifting plate 10. Two liftable samplers 11 are mounted on the top plate 3, and a locking mechanism is provided between the sampler 11 and the storage bin 4. Each sampler 11 includes a sampling cylinder 1101, the bottom of which is connected to a sampling tube 1102. A piston 1104 is installed inside the sampling cylinder 1101, and a piston rod 1103 is connected to the piston 1104. One end of the piston rod 1103 is connected to the lifting plate 10. 0. Fixed connection; It is worth noting that the two sampling cylinders 1101 have the same height but different diameters, i.e., different capacities. One sampling cylinder 1101 has a capacity of 100ml, and the other has a capacity of 25ml, to ensure that the required amount can be accurately obtained each time a sample is taken. Each test requires 100ml of soy sauce and 25ml of dichloromethane. First, adjust the storage container 4 to a suitable height according to the number of tests and the required sample amount. Then, add appropriate amounts of soy sauce and dichloromethane to the two storage containers 4 respectively. Use the cylinder 8 to drive the sampler 11 to descend, so that the sample can be taken. The tube 1102 extends into the storage tank 4, and the cylinder 8 drives the lifting plate 10 to rise. The locking mechanism fixes the sampler 11. Since the sampling tube 1101 is fixed, only the piston rod 1103 and the piston 1104 rise with the lifting plate 10, which can automatically draw the sample into the sampling tube 1101. After sampling is completed, the cylinder 8 is closed, and then the storage tank 4 is rotated to release the lock. The cylinder 8 then drives the sampler 11 to rise, so that the sampling tube 1102 is separated from the storage tank 4, thus completing the accurate sampling. The operator can use a container to receive the sample for subsequent testing.

[0031] See Figure 1 and Figure 5The locking mechanism includes two L-shaped rods 12 and two first wedge blocks 5. The two L-shaped rods 12 are fixed on both sides of the sampling cylinder 1101, and the two first wedge blocks 5 are fixed on both sides of the top wall of the storage tank 4. A movable rod 22 is slidably connected to the L-shaped rods 12. A second wedge block 23 is fixed to one end of the movable rod 22. A first spring 24 is fitted on the movable rod 22. One end of the first spring 24 is connected to the second wedge block 23, and the other end is connected to the L-shaped rod 12. When the sampler 11 descends, the two L-shaped rods 12 descend synchronously. When the second wedge block 23 contacts the first wedge block 5, it will move towards one side of the L-shaped rod 12 and squeeze the first spring 24. When the second wedge block 23 passes the first wedge block 5, the second wedge block 23 returns to its original position under the action of the first spring 24, thus locking the sampler 11 and the storage tank 4 and preventing the sampling cylinder 1101 from rising.

[0032] See Figure 1 A sleeve 13 is fixed inside the mounting hole. The inner wall of the sleeve 13 is provided with an internal thread. The outer wall of the storage bucket 4 is provided with an external thread 14 that matches the internal thread. The height of the storage bucket 4 can be changed by rotating the storage bucket 4. The thread adjustment method makes it easy to control the accuracy, thus facilitating the adjustment of the internal capacity of the storage bucket 4.

[0033] See Figure 1 , Figure 2 and Figure 6 A gear ring 15 is installed at the bottom of the storage hopper 4. A motor 17 is installed on the base plate 1. The output shaft of the motor 17 is connected to a telescopic rod 18. A gear 19 is installed at one end of the telescopic rod 18, and the gear 19 meshes with two gear rings 15. A limit ring 16 is fixed on the gear ring 15, and the lower surface of the limit ring 16 is in contact with the upper surface of the gear 19. A sleeve 1801 is connected to the output shaft of the motor 17. A second spring 1803 is connected inside the sleeve 1801. A connecting rod 1802 is connected to one end of the second spring 1803, and one end of the connecting rod 1802 is fixedly connected to the gear 19. Starting the motor 17 will drive the gear 19 to rotate. Under the action of the gear 19 and the gear ring 15, the two storage bins 4 will rotate and descend synchronously. In order to ensure that the gear 19 can always drive the gear ring 15 to rotate, when the storage bins 4 and the gear ring 15 descend, the limiting ring 16 on the gear ring 15 will push the gear 19 to descend, and the second spring 1803 in the telescopic rod 18 will be compressed, so that the gear 19 will always be engaged with the gear ring 15. In addition, the working state of the cylinder 8 and the motor 17 can be controlled by the controller to meet the usage requirements. The specific control method is existing technology and will not be described in detail here.

[0034] See Figure 1 and Figure 2A rotating shaft 20 is rotatably mounted on the top plate 3. The bottom end of the rotating shaft 20 is fixedly connected to the gear 19, and the top end is fixed with a crossbeam 21. In order to facilitate the acquisition of samples, the rotating shaft 20 rotates together with the gear 19. After the sampler 11 is raised after sampling is completed, the rotating shaft 20 drives the crossbeam 21 to rotate, so that the crossbeam 21 is directly below the L-shaped rod 12. Then, the cylinder 8 drives the lifting plate 10 to descend. At this time, the sampling cylinder 1101 cannot descend. The piston rod 1103 and the piston 1104 descend, and the sample can be automatically discharged.

[0035] The working principle of this invention is as follows: First, based on the required number of tests and the required sample volume, the motor 17 is started to drive the gear 19 to rotate. Under the action of the gear 19 and the gear ring 15, the two storage tanks 4 rotate synchronously and descend. After the storage tanks 4 are adjusted to a suitable height, the motor 17 is turned off. After the adjustment is completed, the first wedge block 5 is located directly below the second wedge block 23. Then, appropriate amounts of soy sauce and dichloromethane are added to the two storage tanks 4 respectively. The total amount of dichloromethane is less than the amount of soy sauce, so the amount added is also less than the amount of soy sauce. The cylinder 8 is started to drive the lifting plate 10 to descend, and the two L-shaped rods 12 descend synchronously. When the second wedge block 23 contacts the first wedge block 5, it will move towards one side of the L-shaped rod 12 and squeeze the first spring 24. When the second wedge block 23 passes the first wedge block 5, under the action of the first spring 24, the second wedge block 23 returns to its original position, thus locking the sampler 11 and the storage tank 4 (e.g., Figure 1 As shown), the sampling tube 1102 is inserted into the storage tank 4, and the cylinder 8 is used to drive the lifting plate 10 to rise. Since the sampling tube 1101 is fixed and cannot be raised, only the piston rod 1103 and the piston 1104 rise with the lifting plate 10, which can automatically draw the sample into the sampling tube 1101. After the sampling is completed, the cylinder 8 is closed.

[0036] Then, the motor 17 is started again to drive the rotating storage bin 4 to rotate. When the first wedge block 5 disengages from the second wedge block 23, the sampler 11 is raised by the cylinder 8. The sampler 11 disengages from the storage bin 4, and the L-shaped rod 12 is higher than the crossbeam 21. After the gear 19 rotates 90°, the motor 17 is turned off, and the rotating shaft 20 and the crossbeam 21 rotate synchronously by 90°. Initially, the crossbeam 21 and the lifting plate 10 are arranged in a cross shape. After rotating 90°, the crossbeam 21 is located directly below the L-shaped rod 12. Then, using... Cylinder 8 drives the lifting plate 10 to descend. Crossbeam 21 restricts the movement of L-shaped rod 12 and sampling cylinder 1101. At this time, sampling cylinder 1101 cannot descend. Only piston rod 1103 and piston 1104 descend, which can automatically discharge the sample. The operator can use a container to receive the sample and carry out subsequent extraction and detection processes. Then, gear 19 rotates 90° again, and the first wedge block 5 rotates to the bottom of the second wedge block 23. Repeat the above steps to perform multiple samplings continuously.

[0037] Since the storage tank 4 rotates 180° and descends a certain distance after each sampling, while the height of the support plate 7 is fixed, the sample in the storage tank 4 always maintains a certain liquid level, ensuring that the sampler 11 can still effectively sample after multiple samplings.

[0038] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A quantitative detection device for soy ketones in soy sauce, comprising a base plate (1) and a top plate (3) fixed to the base plate (1) by a support column (2), characterized in that, Two mounting holes are provided on the top plate (3), and a rotatable and liftable storage bin (4) is provided in each of the two mounting holes. An opening is provided on the bottom wall of the storage bin (4). Support rods (6) are symmetrically arranged on the bottom plate (1). A support plate (7) is fixed on the top of the support rod (6). The two support plates (7) are located in the two storage bins (4) respectively and match the inner cavity size of the storage bins (4). A sampling hole is provided on the top wall of each of the two storage bins (4). Two liftable samplers (11) are provided on the top plate (3), and a locking mechanism is provided between the samplers (11) and the storage bucket (4); The sampler (11) includes a sampling tube (1101). The two sampling tubes (1101) have the same height but different diameters, i.e. different capacities. One sampling tube (1101) has a capacity of 100ml and the other has a capacity of 25ml. The height of the storage tank (4) is adjusted according to the number of tests required and the amount of sample needed. Then, soy sauce and dichloromethane are added to the two storage tanks (4) respectively. A sleeve (13) is fixed inside the mounting hole. The inner wall of the sleeve (13) is provided with an internal thread, and the outer wall of the storage bucket (4) is provided with an external thread (14) that matches the internal thread. A toothed ring (15) is installed at the bottom of the storage hopper (4), and a motor (17) is installed on the base plate (1). The output shaft of the motor (17) is connected to a telescopic rod (18), and a gear (19) is installed at one end of the telescopic rod (18). The gear (19) meshes with two toothed rings (15). A limiting ring (16) is fixed on the gear ring (15), and the lower surface of the limiting ring (16) is in contact with the upper surface of the gear (19).

2. The quantitative detection device for soy ketones in soy sauce according to claim 1, characterized in that, Cylinders (8) are symmetrically installed on the upper surface of the top plate (3). The output shaft of the cylinder (8) is connected to a lifting rod (9). One end of the two lifting rods (9) is fixed to a lifting plate (10). The sampler (11) is installed on the lifting plate (10).

3. The quantitative detection device for soy ketones in soy sauce according to claim 2, characterized in that, The bottom of the sampling cylinder (1101) is connected to a sampling tube (1102), and a piston (1104) is provided inside the sampling cylinder (1101). A piston rod (1103) is connected to the piston (1104), and one end of the piston rod (1103) is fixedly connected to the lifting plate (10).

4. The quantitative detection device for soy ketones in soy sauce according to claim 3, characterized in that, The locking mechanism includes two L-shaped rods (12) and two first wedge blocks (5). The two L-shaped rods (12) are fixed on both sides of the sampling cylinder (1101), and the two first wedge blocks (5) are fixed on both sides of the top wall of the storage bucket (4). A movable rod (22) is slidably connected to the L-shaped rod (12). A second wedge block (23) is fixed to one end of the movable rod (22). A first spring (24) is fitted on the movable rod (22). One end of the first spring (24) is connected to the second wedge block (23), and the other end is connected to the L-shaped rod (12).

5. The quantitative detection device for soy ketones in soy sauce according to claim 1, characterized in that, A rotating shaft (20) is rotatably mounted on the top plate (3). The bottom end of the rotating shaft (20) is fixedly connected to the gear (19), and a crossbeam (21) is fixed at the top end.

6. The quantitative detection device for soy ketones in soy sauce according to claim 1, characterized in that, The telescopic rod (18) is connected to the sleeve (1801) of the output shaft of the motor (17). A second spring (1803) is connected inside the sleeve (1801). One end of the second spring (1803) is connected to a connecting rod (1802), and one end of the connecting rod (1802) is fixedly connected to the gear (19).

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