A soybean product microbial content safety detection platform

Abstract

This invention discloses a safety testing station for microbial content in soy products, relating to the field of food safety testing technology. It includes a station body, end caps, a sample tube, a mixing chamber, an upper fixing component, and a lower fixing component. The mixing chamber is located inside the station body, and the upper and lower fixing components are sequentially installed within it. The lower fixing component has impact chambers that correspond one-to-one with the fixing holes of the upper fixing component. The impact chambers contain a supply ring, an outlet ring, an inner baffle ring, and a nozzle. The outlet ring meshes with an upper toothed ring, driving the nozzle to rotate circumferentially. The through-hole in the inner baffle ring enables intermittent spraying from the nozzle, creating multi-directional intermittent impacts on the sample tube. This invention achieves thorough mixing of the sample and diluent, allows for simultaneous testing of multiple samples, provides reliable sealing, is easy to operate, and effectively improves testing accuracy and efficiency. It is suitable for microbial testing of soy products.

Description

Technical Field

[0001] This invention relates to the field of testing station technology, specifically to a safety testing station for microbial content in soy products. Background Technology

[0002] The detection of microbial content in soy products requires thorough mixing of the soy product sample with a diluent to ensure uniform dispersion of microorganisms, thus guaranteeing the accuracy of subsequent test results. Current methods for mixing samples and diluents often employ manual stirring or simple mechanical agitation, which has several drawbacks: manual stirring is inefficient, and it's difficult to standardize the stirring force and frequency, easily leading to uneven mixing and localized high or low microbial concentrations, affecting detection accuracy; simple mechanical agitation is often unidirectional, easily generating eddies and mixing dead zones during the mixing process, also failing to achieve thorough mixing of the sample and diluent, and the agitation force is difficult to control, easily causing damage to the sample tube or sample spillage.

[0003] Meanwhile, most existing testing equipment is designed for single-sample testing, which cannot achieve simultaneous testing of multiple samples, resulting in low testing efficiency and difficulty in meeting the testing needs of large-scale soy product manufacturers. Summary of the Invention

[0004] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a safety testing station for microbial content in soy products. Through the spherical fit between the inner ring and the fixing hole, the flexible adaptation between the top shaft and the end cap, and the combination of intermittent spraying and circumferential rotational spraying from the nozzle, it achieves thorough sample mixing and simultaneous testing of multiple samples.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a safety testing platform for microbial content in soy products, including a platform body, an end cap, and a sample holding tube, and further includes: A mixing chamber, wherein the mixing chamber is located inside the platform; The upper fixing component is installed inside the mixing chamber. The upper fixing component has multiple fixing holes for installing the sample tube. When the sample tube is installed inside the fixing holes, the sample tube can rotate freely. The lower fixing component is installed inside the mixing chamber and located below the upper fixing component; the lower fixing component has multiple impact chambers that correspond one-to-one with the fixing holes. When the sample tube is assembled inside the fixing hole, its lower end extends into the corresponding impact chamber; the impact chamber is equipped with a nozzle for spraying liquid into the sample tube. The nozzle can realize intermittent liquid spraying and can rotate 360 ​​degrees around the sample tube inside the impact chamber. During the rotation, the spraying direction of the nozzle is towards the sample tube.

[0006] Preferably, each of the impact chambers is fixed with a liquid supply ring, and the liquid supply ring has a liquid supply chamber inside; a liquid outlet ring is rotatably assembled on the inner side of the liquid supply ring, and the liquid outlet ring has a liquid storage chamber inside, and the liquid storage chamber is connected to the liquid supply chamber of the liquid supply ring; the nozzle is fixedly installed on the inner wall of the liquid outlet ring, and the nozzle is connected to the liquid storage chamber of the liquid outlet ring, and the liquid is sprayed into the nozzle sequentially through the liquid supply chamber and the liquid storage chamber.

[0007] Preferably, each of the impact chambers is fixedly fitted with an inner retaining ring, and a portion of the structure of the inner retaining ring extends into the inner region of the liquid outlet ring; the inner retaining ring is provided with a plurality of through holes evenly distributed circumferentially, and the height of each through hole is consistent with the installation height of the nozzle.

[0008] Preferably, an upper toothed ring is rotatably mounted inside the lower fixing member, and the outer sides of the plurality of liquid outlet rings are provided with teeth that mesh with the upper toothed ring.

[0009] Preferably, an inner ring is installed in the fixing hole, the outer wall of the sample tube is a conical surface structure with a larger upper part and a smaller lower part, the inner wall shape of the inner ring is adapted to the conical surface of the outer wall of the sample tube, the mating surface between the fixing hole and the inner ring is spherical, and a gap is reserved between the fixing hole and the inner ring, so that the inner ring can rotate freely in the fixing hole.

[0010] Preferably, the end cap is slidably mounted on the platform, and the end cap has multiple sealing plugs that correspond one-to-one with the sample tubes installed inside. The sealing plugs are movable parts, and when the sealing plugs are in their natural state, they are aligned with the corresponding sample tubes.

[0011] Preferably, the end cap has an arc-shaped groove inside, a top shaft is assembled in the arc-shaped groove, an arc-shaped plate is fixed on the top shaft, the top shaft is installed in the arc-shaped groove through the arc-shaped plate, the inner wall of the arc-shaped groove is spherical, and the center of the sphere coincides with the center of the sphere in the fixing hole, the top shaft can rotate around the center of the sphere in the arc-shaped groove.

[0012] Preferably, a relief groove is provided inside the top shaft, and an elastic body is fixed in the relief groove. The elastic body is connected to the inside of the end cap.

[0013] Preferably, a liquid supply pipe is fixedly installed inside each of the multiple top shafts. The lower end of the liquid supply pipe extends to the bottom of the sealing plug, and the upper end passes through the elastomer and the end cap in sequence before connecting to the flow control valve. The multiple flow control valves are respectively connected to the dilution pipe through corresponding connecting pipes, and the dilution pipe is connected to the dilution liquid supply device outside the detection platform.

[0014] Preferably, liquid is injected into the mixing chamber, a liquid extraction pipe is fixed inside the lower fixing member, a liquid extraction pump is fixed inside the lower fixing member, the inlet of the liquid extraction pump is connected to the liquid extraction pipe, the outlet of the liquid extraction pump is connected to the inner pipe, and the inner pipe is connected to the liquid supply pipe.

[0015] The beneficial effects of this invention are as follows: This testing station uses an inner ring installed inside the upper fixing component to suspend the sample tube. The inner ring adapts to the conical surface of the outer wall of the sample tube to achieve automatic centering and stable suspension, allowing the sample tube to swing freely and providing ample space for its swaying.

[0016] The inner retaining ring and through-hole design enable intermittent liquid spraying. A nozzle that can rotate circumferentially and achieve intermittent water output is installed inside the lower fixed part. The nozzle rotates circumferentially and sprays water, creating multi-directional and intermittent impacts on the suspended sample tube, effectively causing the sample tube to shake irregularly in multiple directions, ensuring that the sample and diluent inside the tube are fully mixed.

[0017] The sealing plugs on the top of the end caps correspond one-to-one with the sample tubes and can be precisely inserted into the openings of the sample tubes to achieve a seal. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the detection station provided in an embodiment of the present invention. Figure 1 .

[0020] Figure 2 A schematic diagram of the structure of the detection station provided in an embodiment of the present invention. Figure 2 .

[0021] Figure 3 This is an internal sectional view of the platform and end caps.

[0022] Figure 4 for Figure 3 A cross-sectional view along the AA direction.

[0023] Figure 5 for Figure 3 Enlarged view of point B in the image.

[0024] Figure 6 This is a cross-sectional view showing the connection between the supply ring and the outlet ring.

[0025] Figure 7 for Figure 3 Enlarged view of point C in the image.

[0026] Figure 8 for Figure 3 Enlarged view of point D in the image.

[0027] Figure 9This is a connection diagram of the lower toothed ring and multiple liquid outlet rings.

[0028] Figure 10 This is a schematic diagram of the top shaft structure.

[0029] Explanation of reference numerals in the attached figures: 1. Platform body, 2. Upper fixing component, 3. Slide rod, 4. End cap, 5. Connecting pipe, 6. Dilution pipe, 7. Lower fixing component, 8. Sample collection pipe, 9. Liquid extraction pipe, 10. Inner retaining ring, 11. Liquid outlet ring, 111. Liquid storage chamber, 12. Upper toothed ring, 13. Inner pipe, 14. Liquid supply pipe, 15. Liquid supply ring, 16. Gear, 17. Top shaft, 171. Arc plate, 172. Relief groove, 18. Elastomer, 19. Inner ring, 20. Lower toothed ring, 21. Sealing plug, 22. Nozzle. Detailed Implementation

[0030] 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.

[0031] Example 1 like Figures 1 to 3 As shown, the present invention provides a safety testing station for microbial content in soy products, including a station body 1, an end cap 4, a mixing chamber, a sample tube 8, an upper fixing component 2 and a lower fixing component 7. The sample tube 8 is used to hold samples and diluents.

[0032] The mixing chamber is located inside the platform 1. The mixing chamber is open at the top and the end cover 4 can seal the mixing chamber from the top. A heating pipe is installed in the inner wall interlayer of the platform 1. The heating pipe can heat the inside of the mixing chamber to achieve temperature control.

[0033] The upper fixing member 2 is installed inside the mixing chamber. The upper fixing member 2 has multiple fixing holes for installing the sample tube 8. When the sample tube 8 is installed inside the fixing holes, the sample tube 8 can rotate freely. The sample tube 8 can be fixed to the upper fixing member 2, while also retaining a certain gap for movement. During the shaking process, the sample and diluent inside can be disturbed, thereby achieving thorough mixing.

[0034] The lower fixing member 7 is installed inside the mixing chamber and is located below the upper fixing member 2; the lower fixing member 7 has multiple impact chambers that correspond one-to-one with the fixing holes.

[0035] When the sample tube 8 is assembled inside the fixing hole, its lower end extends into the corresponding impact chamber. The impact chamber is equipped with a nozzle 22 for spraying liquid onto the sample tube 8. This nozzle 22 can achieve intermittent liquid spraying and can rotate 360 ​​degrees around the sample tube 8 inside the impact chamber, avoiding the problems of single force and limited swing amplitude caused by continuous liquid flow. The intermittent impact is gentler and can avoid excessive impact on the sample tube 8 caused by continuous high-pressure spraying. It can ensure sufficient mixing and protect the tube body and the sample inside. It can also rotate circumferentially around the sample tube 8 inside the impact chamber. The intermittent spraying can provide the sample tube 8 with reset and reversal space in the liquid impact gap. Combined with circumferential rotation, it can achieve multi-directional and irregular shaking, preventing local eddies or mixing dead zones in the sample. During rotation, the spraying direction of the nozzle 22 is towards the sample tube 8. The sample tube 8 is installed in a suspended manner on the upper fixing member 2, with the bottom suspended. The liquid sprayed from the impact chamber acts on the sample tube 8 and can apply force to it to change its position. By coordinating with the circumferential rotation of the spray direction, the sample tube can be swung in multiple directions, making the shaking more uniform and the sample more thoroughly mixed.

[0036] Example 2 Figures 3-9 As shown, based on Embodiment 1, this embodiment provides the internal structure of the impact chamber, as detailed below: Each impact chamber is fixed with a liquid supply ring 15, which has a liquid supply chamber inside. A liquid outlet ring 11 is rotatably mounted inside the liquid supply ring 15, and a liquid storage chamber 111 is provided inside the liquid outlet ring 111. The liquid storage chamber 111 is connected to the liquid supply chamber of the liquid supply ring 15. The liquid supply ring 15 and the liquid outlet ring 11 are rotatably sealed. A sealing ring is installed at the rotatable connection to ensure that the liquid does not leak out during the rotation of the liquid outlet ring 11. The nozzle 22 is fixedly installed on the inner wall of the liquid outlet ring 11 and is connected to the liquid storage chamber 111 of the liquid outlet ring 11. The liquid is sprayed sequentially through the liquid supply chamber and the liquid storage chamber 111 to the nozzle 22. The rotatable fit structure of the liquid supply ring 15 and the liquid outlet ring 11 ensures a continuous liquid supply while allowing the nozzle 22 to rotate 360° around the axis of the sample tube 8 for spraying. The liquid supply chamber and the liquid storage chamber 111 are connected, which can provide a continuous and stable liquid supply during rotation, avoiding pipe entanglement and liquid supply interruption. The liquid outlet ring 11 drives the nozzle 22 to rotate as a whole, which can create multi-directional and multi-angle impacts on the sample tube 8, making the sample tube 8 swing more evenly and the sample mix more thoroughly.

[0037] Each impact chamber is fixedly equipped with an inner baffle ring 10, and part of the structure of the inner baffle ring 10 extends into the inner area of ​​the liquid outlet ring 11. Multiple through holes are evenly opened in the circumference of the inner baffle ring 10, and the height of each through hole is consistent with the installation height of the nozzle 22. By utilizing the through holes on the inner baffle ring 10 and the baffle walls between adjacent through holes, the nozzle 22 can be intermittently sprayed. The inner baffle ring 10 and the through holes cooperate to form a periodic on-off control of the liquid flow of the nozzle 22 during the rotation of the liquid outlet ring 11, so that intermittent spraying can be achieved without an additional solenoid valve. The through holes are evenly arranged in the circumference, which enables the liquid flow to intermittently impact the sample tube 8 in a regular manner, avoiding the oscillation caused by continuous impact, enhancing the disturbance of the sample in the tube, and improving the mixing uniformity.

[0038] An upper gear ring 12 is rotatably mounted inside the lower fixing member 7. The outer side of the liquid outlet ring 11 is provided with teeth that mesh with the upper gear ring 12. Multiple liquid outlet rings 11 mesh with the upper gear ring 12. Rotation of the upper gear ring 12 can simultaneously drive the rotation of multiple liquid outlet rings 11. A lower gear ring 20 is fixed to the bottom of the upper gear ring 12. The upper gear ring 12 and the lower gear ring 20 are concentric. A gear 16 is rotatably mounted inside the lower fixing member 7. The gear 16 meshes with the teeth on the lower gear ring 20. A motor is fixed to drive the gear 16 to rotate. Driven by the motor, the gear 16 rotates, which in turn drives the lower gear ring 20 to rotate. At the same time, the lower gear 20 drives the upper gear ring 12 to rotate. The upper gear ring 12 can simultaneously drive multiple liquid outlet rings 11 to rotate synchronously. While the liquid outlet rings 11 are rotating, the nozzles 22 installed on the liquid outlet rings 11 rotate with them, rotating around the inner sample tube 8 and spraying intermittent liquid towards the sample tube 8, causing the sample tube 8 to shake evenly.

[0039] Example 3 Figures 3-10 As shown, based on Embodiment 1 and Embodiment 2, this embodiment provides a shaking mechanism for the sample tube 8 and a sealing structure for the sample tube 8, as detailed below: An inner ring 19 is installed inside the fixing hole. The outer wall of the sample tube 8 has a tapered surface structure that is larger at the top and smaller at the bottom. The inner wall shape of the inner ring 19 is adapted to the tapered surface of the outer wall of the sample tube 8. The tapered surface fit can achieve automatic centering and guidance, allowing the sample tube 8 to be quickly aligned and positioned when inserted. The installation is convenient and not prone to deviation. The tapered contact surface fits tightly, ensuring stable suspension. The structure that is larger at the top and smaller at the bottom can provide axial restraint for the sample tube 8, preventing it from falling downwards.

[0040] The mating surface between the fixing hole and the inner ring 19 is spherical, and a gap is reserved between the fixing hole and the inner ring 19. The inner ring 19 can rotate freely in the fixing hole. The inner ring 19 is movably assembled in the fixing hole, and the sample tube 8 is installed in the inner ring 19. Under the action of gravity, the sample tube 8 will be arranged vertically. The sample tube 8 can move with the inner ring 19 in the fixing hole, and its movement is constrained by the inner ring 19. It can only rotate around the common center of the fixing hole and the inner ring 19, thereby realizing the shaking action.

[0041] The end cap 4 is slidably mounted on the platform 1 via a slide rod 3. Multiple sealing plugs 21, each corresponding to a sample tube 8, are installed inside the end cap 4. These sealing plugs 21 are movable. When in their natural state, the sealing plugs 21 align with their corresponding sample tubes 8, and the end cap 4 can reciprocate vertically above the platform 1. When the end cap 4 moves upward, an assembly space is formed between the end cap 4 and the platform 1, through which the sample tubes 8 can be placed in the mixing chamber. In their natural state, the sealing plugs 21 on the end cap 4 face downwards and directly towards the sample tubes 8. During the closing process of the end cap 4 and the platform 1, the sealing plugs 21 extend precisely into the sample tubes 8, achieving a seal on the sample tubes 8.

[0042] An arc-shaped groove is provided inside the end cap 4. A top shaft 17 is installed in the arc-shaped groove, and an arc-shaped plate 171 is fixed on the top shaft 17. The top shaft 17 is installed inside the arc-shaped groove through the arc-shaped plate 171. The inner wall of the arc-shaped groove is spherical, and the center of the sphere coincides with the center of the sphere in the fixing hole. The top shaft 17 can rotate around the center of the sphere in the arc-shaped groove. When the top shaft 17 is installed inside the arc-shaped groove, there is a gap between the top shaft 17 and the inner wall of the arc-shaped groove. The top shaft 17 can move inside the arc-shaped groove. The side wall of the arc-shaped groove can limit the rotation angle of the top shaft 17, so that the rotation angle of the top shaft 17 in the arc-shaped groove is limited to a preset range.

[0043] The top shaft 17 has a relief groove 172 inside, and an elastic body 18 is fixed inside the relief groove 172. The elastic body 18 is connected to the inside of the end cap 4. The elastic body 18 connects the top shaft 17 to the end cap 4 and is used to limit the angle of the top shaft 17. Under the action of the elastic body 18, the top shaft 17 always faces the sample tube 8. When the end cap 4 moves towards the platform 1, the sealing plug 21 installed on the end cap 4 will block and seal the opening of the sample tube 8. At the same time, the top shaft 17 can move freely with the sample tube 8 to ensure that the sample tube 8 can swing freely.

[0044] Each of the multiple top shafts 17 is fixedly equipped with a liquid supply pipe 14. The lower end of the liquid supply pipe 14 extends to the bottom of the sealing plug 21, and the upper end passes through the elastomer 18 and the end cap 4 in sequence before connecting to the flow control valve. The multiple flow control valves are respectively connected to the dilution pipe 6 through corresponding connecting pipes 5. The dilution pipe 6 is connected to the dilution liquid supply device outside the detection platform. The injection volume of the dilution liquid is controlled by the flow control valve, and the liquid ratio entering the sample tube 8 can be adjusted to detect the microbial content under different dilution liquid systems, thereby achieving the effect of simultaneous detection of multiple samples.

[0045] Liquid is injected into the mixing chamber. A liquid extraction pipe 9 is fixed inside the lower fixing member 7, and a liquid extraction pump is fixed inside the lower fixing member 7. The inlet of the liquid extraction pump is connected to the liquid extraction pipe 9, and the outlet of the liquid extraction pump is connected to the inner pipe 13. The inner pipe 13 is connected to the liquid supply pipe 14. Driven by the liquid extraction pump, the liquid in the mixing chamber is extracted and flows through the inner pipe 13, the liquid supply ring 15, the liquid storage chamber 111 and the nozzle 22 in sequence, and finally sprays onto the outer wall of the sample collection tube 8, and then flows back to the mixing chamber, thereby realizing liquid circulation.

[0046] Working principle: When this bean product microbial content safety testing station is in operation, first lift the end cap 4 upwards along the sliding rod 3 to create an assembly space between the end cap 4 and the station body 1. Then, place the sample tube 8 containing the sample into the fixing hole of the upper fixing member 2. The outer wall of the sample tube 8 is tapered, wider at the top and narrower at the bottom, which matches the tapered surface of the inner ring 19. The bottom of the sample tube 8 extends into the impact chamber of the lower fixing member 7. The fixing hole and the inner ring 19 are spherically fitted, allowing the sample tube 8 to swing only around a common spherical center, ensuring both stable installation and sufficient freedom of movement.

[0047] When the cap is closed, the end cap 4 moves vertically downwards, and the sealing plug 21 on it automatically aligns with and inserts into the upper opening of the sample tube 8, completing the seal. The top shaft 17 engages with the arc-shaped groove inside the end cap 4 through the arc-shaped plate 171, with the centers of their spherical surfaces coinciding. The top shaft 17 can swing synchronously with the sample tube 8, and the side wall of the arc-shaped groove limits the swing angle to prevent excessive deviation. The elastic body 18 inside the top shaft 17 provides a restoring force, ensuring that the sealing plug 21 always fits against the sample tube 8, maintaining a reliable seal during shaking. The external diluent supply device adds diluent quantitatively to each sample tube 8 through the dilution tube 6, connecting pipe 5, and flow control valve via the internal supply pipe 14 of the top shaft 17. The dilution ratio can be adjusted independently, enabling simultaneous detection of multiple samples with different dilution concentrations.

[0048] During operation, the heating pipes inside the platform 1 heat and control the temperature of the mixing chamber, providing a suitable environment for microbial detection. A pump draws liquid from the mixing chamber, delivers it through the inner tube 13 to the supply rings 15 in each impact chamber, then into the storage chambers 111 of the outlet rings 11, and finally ejects it through the nozzles 22. A motor drives the gear 16 to rotate, causing the lower gear ring 20 and upper gear ring 12 to rotate synchronously. The upper gear ring 12 simultaneously drives all outlet rings 11 to rotate circumferentially around the sample collection tube 8.

[0049] During the rotation of the liquid outlet ring 11, the through-hole on the inner baffle ring 10 and the baffle wall periodically open and close the nozzle 22, achieving intermittent spraying. The intermittent liquid flow impacts the outer wall of the sample tube 8, combined with the circumferential rotational spray, causing the sample tube 8 to oscillate in multiple directions and irregularly, avoiding eddies and mixing dead zones, and ensuring thorough agitation and mixing of the sample and diluent inside the tube. The sprayed liquid flows back to the mixing chamber and circulates continuously under the action of the pump, ensuring uniform impact force and temperature. The mixed liquid is used as the spraying medium inside the mixing chamber. When the cover 4 is closed on the platform 1, the sealing plug can seal the opening of the sample tube 8, thereby preventing liquid from the mixing chamber from entering the sample tube 8. At the same time, sterile liquid is used inside the mixing chamber, and the double protection ensures that the mixing chamber is not contaminated. The entire process does not require manual stirring. The mechanical structure achieves automatic, uniform, and efficient sample mixing, providing a stable and reliable sample environment for subsequent microbial content detection, improving detection accuracy and efficiency.

[0050] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A safety testing platform for microbial content in soy products, comprising a platform body (1), end caps (4), and sample collection tubes (8), characterized in that, Also includes: A mixing chamber is located inside the platform (1); Upper fixing member (2) is located inside the mixing chamber. The upper fixing member (2) has multiple fixing holes for installing the sample tube (8). When the sample tube (8) is installed inside the fixing holes, the sample tube (8) can rotate freely. The lower fixing member (7) is located inside the mixing chamber and below the upper fixing member (2); the lower fixing member (7) has multiple impact chambers, and each impact chamber is arranged in a one-to-one correspondence with the fixing hole of the upper fixing member (2); When the sample tube (8) is assembled inside the fixing hole, its lower end extends into the corresponding impact chamber; the impact chamber is equipped with a nozzle (22) for spraying liquid onto the sample tube (8). The nozzle (22) can realize intermittent liquid spraying and can complete 360-degree circumferential rotation around the sample tube (8) inside the impact chamber. During the rotation, the spraying direction of the nozzle (22) is towards the sample tube (8).

2. The safety testing station for microbial content in soy products as described in claim 1, characterized in that, Each of the impact chambers is fixed with a liquid supply ring (15), and the liquid supply ring (15) has a liquid supply chamber inside. A liquid outlet ring (11) is rotatably assembled inside the liquid supply ring (15), and a liquid storage chamber (111) is provided inside the liquid outlet ring (111), and the liquid storage chamber (111) is connected to the liquid supply chamber of the liquid supply ring (15). The nozzle (22) is fixedly installed on the inner wall of the liquid outlet ring (11), and the nozzle (22) is connected to the liquid storage chamber (111) of the liquid outlet ring (11). The liquid is sprayed out from the nozzle (22) through the liquid supply chamber and the liquid storage chamber (111) in sequence.

3. The safety testing station for microbial content in soy products as described in claim 2, characterized in that, Each of the impact chambers is fixedly fitted with an inner retaining ring (10), and part of the structure of the inner retaining ring (10) extends to the inner side area of ​​the liquid outlet ring (11); the inner retaining ring (10) is uniformly provided with multiple through holes along the circumference, and the setting height of each through hole is consistent with the installation height of the nozzle (22).

4. The safety testing station for microbial content in soy products as described in claim 2, characterized in that, The lower fixing member (7) is rotatably mounted with an upper toothed ring (12), and the outer sides of the plurality of liquid outlet rings (11) are provided with teeth that mesh with the upper toothed ring (12).

5. The safety testing station for microbial content in soy products as described in claim 1, characterized in that, An inner ring (19) is installed in the fixing hole. The outer wall of the sample tube (8) is a tapered surface structure with a larger upper part and a smaller lower part. The inner wall shape of the inner ring (19) is adapted to the tapered surface of the outer wall of the sample tube (8). The mating surface between the fixing hole and the inner ring (19) is a spherical surface. A gap is reserved between the fixing hole and the inner ring (19). The inner ring (19) can rotate freely in the fixing hole.

6. The safety testing station for microbial content in soy products as described in claim 5, characterized in that, The end cap (4) is slidably mounted on the platform (1). The end cap (4) has multiple sealing plugs (21) that correspond one-to-one with the sample tubes (8). The sealing plugs (21) are movable parts. When the sealing plugs (21) are in their natural state, they are aligned with the corresponding sample tubes (8).

7. The safety testing station for microbial content in soy products as described in claim 6, characterized in that, The end cap (4) has an arc-shaped groove inside, and a top shaft (17) is installed in the arc-shaped groove. An arc-shaped plate (171) is fixed on the top shaft (17). The top shaft (17) is installed in the arc-shaped groove through the arc-shaped plate (171). The inner wall of the arc-shaped groove is spherical, and the center of the sphere coincides with the center of the sphere in the fixing hole. The top shaft (17) can rotate around the center of the sphere in the arc-shaped groove.

8. The safety testing station for microbial content in soy products as described in claim 7, characterized in that, The top shaft (17) has a relief groove (172) inside, and an elastic body (18) is fixed inside the relief groove (172). The elastic body (18) is connected to the inside of the end cap (4).

9. The safety testing station for microbial content in soy products as described in claim 7, characterized in that, Each of the top shafts (17) is fixedly provided with a liquid supply pipe (14). The lower end of the liquid supply pipe (14) extends to the bottom of the sealing plug (21), and the upper end passes through the elastomer (18) and the end cap (4) in sequence before connecting to the flow control valve. The multiple flow control valves are respectively connected to the dilution pipe (6) through corresponding connecting pipes (5). The dilution pipe (6) is connected to the dilution liquid supply device outside the detection platform.

10. The safety testing station for microbial content in soy products as described in claim 9, characterized in that, Liquid is injected into the mixing chamber. A liquid extraction pipe (9) is fixed inside the lower fixing member (7). A liquid extraction pump is fixed inside the lower fixing member (7). The inlet of the liquid extraction pump is connected to the liquid extraction pipe (9). The outlet of the liquid extraction pump is connected to the inner pipe (13). The inner pipe (13) is connected to the liquid supply pipe (14).

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