Food oil safety detection device based on biosensor

Abstract

The present application relates to the technical field of biosensor detection, and particularly relates to a food oil safety detection device based on a biosensor. The detection device comprises a biosensor and an electron microscope, and further comprises an embedded sampling device. The sampling device comprises a sampling tank, a mounting column, a feeding pipe, a pressurizing assembly and a cleaning assembly. The mounting column has a spiral heating pipe in the side wall and a vertical discharge pipe at the bottom. The sampling tank is composed of an upper tank and a lower tank connected by threads. The upper tank is provided with a first filter disc, and the lower tank is provided with a second filter disc. An installation disc is arranged between the upper tank and the lower tank. A first pressurizing space is formed between the first filter disc and the upper tank, and a second pressurizing space is formed between the center frame and the second filter disc. A water level detection mechanism is arranged beside the second filter disc. A heating sleeve pipe is arranged outside the feeding pipe. The present application realizes efficient layering, precise temperature control and intelligent cleaning of oil food, improves detection sensitivity, reduces maintenance cost, and is suitable for multi-scene rapid detection requirements.

Description

Technical Field

[0001] This invention relates to the field of biosensor detection technology, specifically to a food oil safety detection device based on biosensors. Background Technology

[0002] With the increasing complexity of the global food supply chain, public health incidents caused by foodborne pathogens are on the rise. These pathogens, by contaminating food substrates, can not only cause common illnesses such as acute gastroenteritis, but also potentially trigger serious systemic infections. Therefore, establishing a scientific microbial safety assessment system has become a core element in ensuring food safety. Accurate detection of total bacterial count, mycotoxins, and pathogens is not only the technical basis for determining whether food products meet quality standards, but also a key parameter for assessing their potential health risks.

[0003] Existing food oil safety testing technologies have significant shortcomings:

[0004] Challenges in controlling the flowability of solid oils: Traditional testing devices lack efficient constant temperature heating systems. When the ambient temperature is lower than the melting point of the oil (such as palm oil at about 40°C), the oil inside the feed pipe is prone to solidification, causing pipe blockage or reduced efficiency due to stratification.

[0005] The risk of cross-contamination is prominent: when the equipment needs to be tested a second time after completing one test, some of the grease introduced in the previous test may still remain in the feed pipe and other parts of the equipment. Traditional equipment cannot remove it. The integrated sampling tank has a complex structure and requires the disassembly of multiple parts for cleaning. Residual grease is easy to adhere to the surface of the feed pipe and filter components, leading to deviations in test results.

[0006] Layered filtration is inefficient: Traditional devices rely on a single pressure source and cannot dynamically adjust filtration parameters according to the filtration position of grease molecules. Summary of the Invention

[0007] Therefore, it is necessary to provide a food oil safety detection device based on biosensors to address the existing technical problems.

[0008] To address the problems in the existing technology, the technical solution adopted by this invention is as follows:

[0009] This invention provides a food oil safety detection device based on a biosensor. The detection device includes a biosensor and an electron microscope, as well as a built-in sampling device. The sampling device includes a sampling tank, a mounting column, a feeding pipe, a pressurization component, and a cleaning component.

[0010] The mounting column has a spiral heating pipe installed inside its side wall and a vertical discharge pipe at the bottom.

[0011] The sampling tank consists of an upper tank and a lower tank connected by threads. The upper tank is equipped with a first filter disc, and the lower tank is equipped with a second filter disc. An installation plate is provided between the upper and lower tanks. A central frame is fixedly installed on the installation plate. The central frame consists of a fixing ring, a one-way sealing disc, a contact ring, and a guide disc. The installation plate is threaded to the upper tank. The fixing ring is fixedly installed on the installation plate. The one-way sealing disc can slide vertically below the fixing ring and can seal with the fixing ring. A one-way discharge channel can be formed between the fixing ring and the one-way sealing disc. The contact ring is fixedly installed below the one-way sealing disc. The guide disc is located between the contact ring and the second filter disc. The guide disc abuts against the contact ring and the second filter disc respectively. A first-level pressurization space is formed between the first filter disc and the upper tank. A second-level pressurization space is formed between the central frame and the second filter disc. A water level detection mechanism is provided next to the second filter disc.

[0012] A heating sleeve is fitted on the outside of the feed pipe;

[0013] The pressurization assembly includes a first pressurization pipe connected to the feed pipe and a second pressurization pipe connected to the secondary pressurization space;

[0014] The cleaning assembly includes a first cleaning mechanism for cleaning the feed pipe and a second cleaning mechanism for cleaning the discharge pipe.

[0015] Preferably, the one-way sealing disc and the fixing ring are connected by an elastic connecting assembly. The elastic connecting assembly has several sets and is distributed in a ring around the central axis of the sampling tank. The elastic connecting assembly includes a mounting groove, a second connecting rod, a piston, a spring, and a locking pin. The mounting groove is opened at the bottom of the fixing ring. The piston is slidably disposed in the mounting groove. The second connecting rod is coaxially disposed with the piston and the top of the second connecting rod is fixedly connected to the piston. The spring is disposed in the mounting groove, and the two ends of the spring are fixedly connected to the top of the mounting groove and the piston, respectively. The second connecting rod is fixedly connected to the one-way sealing disc through the locking pin.

[0016] Preferably, the top of the one-way sealing plate is provided with a first inclined material discharge chamfer, which is gradually inclined downward from the center of the one-way sealing plate. The edge of the one-way sealing plate is provided with a third sealing ring that seals with the fixing ring. The abutment ring is fixedly connected to the mounting plate through the first connecting rod.

[0017] Preferably, the top of the guide plate is fixedly provided with a second inclined feeding chamfer, which is gradually inclined upward from the center outward on the guide plate. The center of the guide plate is provided with a central hole, and the bottom of the guide plate is provided with a spiral material guiding channel. The filter holes on the second filter plate are spirally arranged and matched with the spiral material guiding channel.

[0018] Preferably, a vertical groove is provided on the inner side wall of the lower tank, a first limiting block that cooperates with the vertical groove is provided on the outer side wall of the second filter disc, and a second limiting block that cooperates with the vertical groove is provided on the outer side wall of the guide disc.

[0019] Preferably, the first cleaning mechanism includes a steel rope, a cleaning head, a conical head, an abutment scraper ring, and a sliding frame. The steel rope is installed inside the feed pipe, and the side walls at both ends of the feed pipe have through holes for the steel rope to pass through. The sliding frame is slidably installed on the inner wall of the feed pipe. The abutment scraper ring is fixedly installed on the sliding frame. There are two cleaning heads and two conical heads, which are respectively located at both ends of the abutment scraper ring. The steel rope is fixedly connected to the sliding frame.

[0020] Preferably, the second cleaning mechanism includes a cleaning pipe and a drain pipe, with the cleaning pipe installed on the side wall of the mounting column and the drain pipe installed at the bottom of the mounting column.

[0021] Preferably, the water level detection mechanism includes an insertion rod, a connecting hole, a vertical groove, a contact sensor, and a buoyancy sensor ball. The insertion rod is horizontally slidable, and a vertical groove is formed in the middle of the insertion rod from bottom to top. The connecting hole extends from one end of the insertion rod near the center of the sampling tank and connects to the vertical groove. The contact sensor is fixedly installed at the top of the vertical groove, and the buoyancy sensor ball is slidably disposed in the vertical groove. Several leakage holes are formed at the bottom of the vertical groove.

[0022] Preferably, it also includes a pushing assembly, which is disposed beside the mounting column. The pushing assembly includes a push rod, a push plate, and a horizontal guide seat. The push rod is horizontally slidably disposed, the push plate is fixedly connected to the push rod, the horizontal guide seat is fixedly installed on the outer wall of the mounting column, the push plate is slidably disposed in the horizontal guide seat, the insertion rod and the second pressurizing pipe are both fixedly installed on the push plate, and a sealing port for the insertion of the insertion rod and the second pressurizing pipe and a sealing rubber gasket installed in the sealing port are provided on the lower tank.

[0023] Preferably, a first limiting notch is provided on the top of the upper tank, and a second limiting notch is provided at the corresponding position on the top of the mounting column. The first limiting notch and the discharge pipe are combined to form a rectangular notch, and a matching rectangular limiting block is provided inside the rectangular notch.

[0024] The advantages of this invention compared to the prior art are:

[0025] 1. This invention employs a dual constant-temperature heating system (spiral heating pipe + heating jacket) to ensure the fluidity of oils and prevent solidification and blockage. The modular and detachable sampling tank supports rapid replacement and dynamic pressure control in dual pressurization spaces, improving stratification efficiency and enhancing detection results. This invention achieves efficient stratification, precise temperature control, and intelligent cleaning of oily foods, improving detection sensitivity, reducing maintenance costs, and is suitable for rapid detection needs in multiple scenarios.

[0026] 2. The first cleaning mechanism significantly reduces the residue rate of the feed pipe. The external water level detection mechanism can clean independently to avoid cross-contamination. The second cleaning mechanism can clean the discharge pipe. The central frame ensures that the one-way discharge channel is opened accurately to prevent grease backflow. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a food oil safety detection device based on biosensors;

[0028] Figure 2 This is a three-dimensional structural diagram of the sampling tank in a food oil safety testing device based on biosensors;

[0029] Figure 3 Cross-section of the sampling tank and its internal structure in a biosensor-based food oil safety testing device. Figure 1 ;

[0030] Figure 4 Cross-section of the sampling tank and its internal structure in a biosensor-based food oil safety testing device. Figure 2 ;

[0031] Figure 5 This is a three-dimensional sectional view of the sampling tank in a food oil safety testing device based on biosensors;

[0032] Figure 6 This refers to the three-dimensional explosion of the sampling tank in a food oil safety testing device based on biosensors. Figure 1 ;

[0033] Figure 7 This refers to the three-dimensional explosion of the sampling tank in a food oil safety testing device based on biosensors. Figure 2 ;

[0034] Figure 8 This is a quarter-section view of the central frame in a food oil safety testing device based on biosensors;

[0035] Figure 9 This is a three-dimensional sectional view of the central frame in a food oil safety testing device based on biosensors;

[0036] Figure 10 yes Figure 9 Enlarged view of point B in the middle;

[0037] Figure 11 This is a 3D exploded view of the water level detection mechanism in a food oil safety detection device based on biosensors;

[0038] Figure 12 This is a three-dimensional exploded view of part of the structure of a food oil safety detection device based on biosensors;

[0039] Figure 13 yes Figure 3 Enlarged view of point A in the middle.

[0040] The numbers on the map are:

[0041] 1. Sampling tank; 11. Upper tank; 111. First limiting notch; 12. Lower tank; 122. Vertical chute; 123. Sealing port; 124. Sealing rubber gasket; 13. Mounting plate; 14. Center frame; 141. Fixing ring; 142. One-way sealing plate; 145. First inclined feeding chamfer; 146. Third sealing ring; 143. Contact ring; 147. First connecting rod; 144. Guide plate; 148. Second inclined feeding chamfer; 149. Center hole; 1411. Spiral guide channel; 1412. Second limiting block; 15. First filter plate; 16. Second filter plate; 161. First limiting block; 17. Elastic connecting assembly; 171. Mounting groove; 172. Second connecting rod; 173. Piston; 174. Spring; 175. Lock 1. Fixed column; 2. Mounting column; 21. Spiral heating pipe; 22. Discharge pipe; 24. Second limiting notch; 25. Rectangular limiting block; 23. Water level detection mechanism; 231. Insert rod; 232. Connecting hole; 233. Vertical groove; 234. Contact sensor; 235. Buoyancy sensor ball; 236. Leakage hole; 3. Feeding pipe; 31. Heating sleeve; 4. Pressurization assembly; 41. First pressurization pipe; 42. Second pressurization pipe; 5. Cleaning assembly; 51. First cleaning mechanism; 511. Steel rope; 512. Cleaning head; 513. Conical head; 514. Contact scraper ring; 515. Sliding frame; 52. Second cleaning mechanism; 521. Cleaning pipe; 522. Drainage pipe; 6. Pushing assembly; 61. Push rod; 62. Pushing plate; 63. Horizontal guide seat. Detailed Implementation

[0042] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1 - Figure 13 The food oil safety detection device based on biosensors shown includes a biosensor and an electron microscope, as well as a built-in sampling device, which includes a sampling tank 1, a mounting column 2, a feeding pipe 3, a pressurization component 4, and a cleaning component 5.

[0044] The mounting column 2 has a spiral heating pipe 21 installed inside the side wall and a discharge pipe 22 vertically installed at the bottom;

[0045] The sampling container 1 consists of an upper container 11 and a lower container 12 connected by threads. A first filter disc 15 is installed inside the upper container 11, and a second filter disc 16 is installed inside the lower container 12. A mounting plate 13 is provided between the upper container 11 and the lower container 12. A central frame 14 is fixedly mounted on the mounting plate 13. The central frame 14 consists of a fixing ring 141, a one-way sealing disc 142, an abutment ring 143, and a guide disc 144. The mounting plate 13 is threadedly connected to the upper container 11. The fixing ring 141 is fixedly mounted on the mounting plate 13. The one-way sealing disc 142 is vertically slidable below the fixing ring 141 and can seal with the fixing ring 141 (e.g., ...). Figure 9 As shown), a one-way discharge channel can be formed between the fixed ring 141 and the one-way sealing plate 142 (the one-way discharge channel is annular, that is, formed by the gap that leaks out at the original sealing point between the one-way sealing plate 142 and the fixed ring 141 after the one-way sealing plate 142 moves downward). The contact ring 143 is fixedly installed below the one-way sealing plate 142. The guide plate 144 is set between the contact ring 143 and the second filter plate 16. The guide plate 144 contacts the contact ring 143 and the second filter plate 16 respectively. A first-level pressurization space is formed between the first filter plate 15 and the upper tank 11. A second-level pressurization space is formed between the central frame 14 and the second filter plate 16. A water level detection mechanism 23 is provided on the side of the second filter plate 16.

[0046] A heating sleeve 31 is fitted on the outside of the feed pipe 3;

[0047] The booster assembly 4 includes a first booster pipe 41 connected to the feed pipe 3 and a second booster pipe 42 connected to the secondary booster space;

[0048] The cleaning assembly 5 includes a first cleaning mechanism 51 for cleaning the feed pipe 3 and a second cleaning mechanism 52 for cleaning the discharge pipe 22.

[0049] This invention enables the stratification of the oil to be tested through the sampling tank 1. The mounting column 2 is used to install the sampling tank 1 on the equipment. In actual use, the sampling tank 1 can be quickly replaced. After completing the stratification and retention of one sample, the sample in the new sampling tank 1 can be processed. After replacement, the entire equipment can quickly perform a self-cleaning function, thereby ensuring that the subsequent testing process will not be affected by the previous sample.

[0050] The key advantage of this invention is its ability to accurately detect solid greases. The device features a constant-temperature heating function, using a spiral heating pipe 21 to heat the entire sampling tank 1 located inside the mounting column 2. This ensures that the grease inside the sampling tank 1 does not solidify during stratified sampling. The heating sleeve 31 heats the grease to be tested inside the supply pipe 3, allowing the solid grease to flow smoothly within the supply pipe 3. Furthermore, the cleaning component 5 ensures thorough cleaning after each test, preventing residual solid grease from adhering to the supply pipe 3 or other testing locations, thus improving the accuracy of subsequent tests.

[0051] Another key point is that the sampling tank 1 is designed as a detachable structure with a reasonable internal structure. It has two separate pressurization zones, which can provide different pressure values ​​according to the different molecular sizes to be filtered, thereby further improving the sampling effect and sampling rate, so as to improve the detection effect of oils.

[0052] The first cleaning mechanism 51 can clean the inside of the feed pipe 3, and the second cleaning mechanism 52 can clean the discharge pipe 22 after use.

[0053] The one-way sealing disc 142 and the fixing ring 141 are connected by an elastic connecting assembly 17. The elastic connecting assembly 17 has several sets and is distributed in a ring around the central axis of the sampling container 1. The elastic connecting assembly 17 includes a mounting groove 171, a second connecting rod 172, a piston 173, a spring 174 and a locking post 175. The mounting groove 171 is opened at the bottom of the fixing ring 141. The piston 173 is slidably disposed in the mounting groove 171. The second connecting rod 172 is coaxially disposed with the piston 173 and the top of the second connecting rod 172 is fixedly connected to the piston 173. The spring 174 is disposed in the mounting groove 171 and the two ends of the spring 174 are fixedly connected to the top of the mounting groove 171 and the piston 173, respectively. The second connecting rod 172 is fixedly connected to the one-way sealing disc 142 through the locking post 175.

[0054] The elastic connection component 17 achieves an elastic connection between the fixed ring 141 and the one-way sealing disc 142. In the initial state, the one-way sealing disc 142 and the fixed ring 141 are sealed together. When the first pressurization pipe 41 is working, the primary pressurization space is pressurized, and the grease to be tested is introduced into the central frame 14 through the first filter disc 15. Under pressure, the one-way sealing disc 142 moves downward, exposing the one-way discharge channel between the fixed ring 141 and the one-way sealing disc 142, allowing it to perform normal material discharge. When more refined screening is required, the pressure needs to be increased to improve the screening rate of the second filter disc 16. At this time, the second pressurization pipe 42 works, and the secondary pressurization space is pressurized. Under the action of the spring 174, the second connecting rod 172 is reset, and the edge of the one-way sealing disc 142 is sealed to the fixing ring 141. The increased pressure can make the fixing ring 141 and the one-way sealing disc 142 fit more tightly, preventing the oil after primary screening from flowing back to the top, thereby improving the oil screening flow rate.

[0055] Mounting slot 171 is used to mount piston 173 and spring 174. Piston 173 moves upward under the force of spring 174, which in turn drives the second connecting rod 172, which is fixedly connected to piston 173, to move synchronously. The second connecting rod 172, through locking pin 175, drives the one-way sealing disc 142, which is fixedly connected to it, to move synchronously, thus realizing the driving function of the one-way sealing disc 142. In the initial feeding state, the internal pressure of the upper tank 11 forces the one-way sealing disc 142 to move downward against the force of spring 174.

[0056] The top of the one-way sealing plate 142 is provided with a first inclined feeding chamfer 145. The first inclined feeding chamfer 145 is gradually inclined downward from the center of the one-way sealing plate 142. The edge of the one-way sealing plate 142 is provided with a third sealing ring 146 that seals with the fixing ring 141. The abutment ring 143 is fixedly connected to the mounting plate 13 through the first connecting rod 147.

[0057] The first inclined chamfer 145 facilitates the flow of grease onto the one-way sealing plate 142. Grease can gradually flow outward and downward along the inclined direction of the first inclined chamfer 145, so that it can pass through the one-way discharge channel. The one-way sealing plate 142 and the fixing ring 141 can be sealed and connected by the third sealing ring 146 during sealing. The first connecting rod 147 fixes the abutment ring 143 to the mounting plate 13.

[0058] The top of the guide plate 144 is fixedly provided with a second inclined feeding chamfer 148. The second inclined feeding chamfer 148 is set on the guide plate 144 from the center outward and upward. The center of the guide plate 144 is provided with a central hole 149. The bottom of the guide plate 144 is provided with a spiral material guiding channel 1411. The filter holes on the second filter plate 16 are spirally arranged and match the spiral material guiding channel 1411.

[0059] The abutment ring 143 can firmly press the guide plate 144 against the second filter plate 16 (the mounting plate 13 is connected to the abutment ring 143 through the first connecting rod 147, so that the position of the abutment ring 143 is fixed, the abutment ring 143 presses against the guide plate 144 in contact with it, and the guide plate 144 presses against the second filter plate 16 in contact with it, so that the second filter plate 16 is locked in the lower tank 12). This can fix the guide plate 144 and the second filter plate 16 at the same time, so that the positions of the two are fixed. The grease gradually flows towards the center of the guide plate 144 through the second inclined feeding chamfer 148, and then is introduced into the spiral guide channel 1411 through the central hole 149. Then it gradually flows along the spiral track of the spiral guide channel 1411, and gradually passes through the second filter plate 16 for filtration during the flow.

[0060] A vertical groove 122 is provided on the inner wall of the lower tank 12 (e.g., Figure 6 As shown, the outer wall of the second filter disc 16 is provided with a first limiting block 161 that cooperates with the vertical slide groove 122, and the outer wall of the guide disc 144 is provided with a second limiting block 1412 that cooperates with the vertical slide groove 122.

[0061] The vertical chute 122, in conjunction with the first limiting block 161 and the second limiting block 1412, determines the installation positions of the guide plate 144 and the second filter plate 16, thereby ensuring that the spiral material guide channel 1411 corresponds to the spirally arranged filter holes on the second filter plate 16, thus ensuring the accuracy of material screening.

[0062] The first cleaning mechanism 51 includes a steel cable 511, a cleaning head 512, a conical head 513, an abutment scraper ring 514, and a sliding frame 515. The steel cable 511 is installed inside the feed pipe 3 (e.g., Figure 13 As shown, the side walls at both ends of the feed pipe 3 are provided with through holes for the steel rope 511 to pass through. The sliding frame 515 is slidably set on the inner wall of the feed pipe 3. The abutting scraper ring 514 is fixedly installed on the sliding frame 515. There are two cleaning heads 512 and two conical heads 513 respectively located at both ends of the abutting scraper ring 514. The steel rope 511 is fixedly connected to the sliding frame 515.

[0063] To prevent grease from accumulating inside the supply pipe 3 and contaminating the pipe, thus affecting the accuracy of secondary testing, the inside of the supply pipe 3 needs to be cleaned. A steel cable 511 pulls the sliding frame 515 inside the supply pipe 3. During this movement, the cleaning head 512, conical head 513, and scraper ring 514 mounted on the frame move synchronously. The cleaning head 512 sprays cleaning water into the supply pipe 3, and the scraper ring 514 removes residual grease, thus cleaning the pipe. The conical head 513 facilitates the overall movement of the sliding frame 515. Simultaneously, the sliding frame 515 can be pulled out from the end of the supply pipe 3 furthest from the sampling tank 1, ensuring smooth grease flow. During cleaning, the steel cable 511 can be pulled to move the sliding frame 515 along the trajectory of the supply pipe 3.

[0064] The second cleaning unit 52 includes a cleaning pipe 521 and a drain pipe 522 (e.g., ...). Figure 3 As shown, the cleaning pipe 521 is installed on the side wall of the mounting column 2, and the drain pipe 522 is installed at the bottom of the mounting column 2.

[0065] When it is necessary to clean the discharge pipe 22, the sampling tank 1 is removed from the mounting column 2. At this time, the second cleaning mechanism 52 can be used to clean the inside of the mounting column 2. Cleaning water is introduced into the mounting column 2 through the cleaning pipe 521. During this process, the discharge pipe 22 is cleaned, and then the water inside the mounting column 2 is discharged through the drain pipe 522.

[0066] The water level detection mechanism 23 includes a rod 231, a connecting hole 232, a vertical groove 233, a contact sensor 234, and a buoyancy sensing ball 235. The rod 231 is horizontally slidable (e.g., Figure 11 As shown, a vertical groove 233 is provided in the middle of the insertion rod 231 from bottom to top. A connecting hole 232 extends from one end of the insertion rod 231 near the center of the sampling tank 1 and connects to the vertical groove 233. A contact sensor 234 is fixedly installed on the top of the vertical groove 233. A buoyancy sensor ball 235 is slidably disposed in the vertical groove 233. Several drainage holes 236 are provided at the bottom of the vertical groove 233.

[0067] When the water level detection mechanism 23 is working, the insertion rod 231 is first inserted into the lower tank 12 to communicate with the internal space of the lower tank 12, thereby detecting the water level inside the lower tank 12. Based on the settings, operations such as draining liquid or stopping feeding are performed. With continuous feeding, the water level inside the lower tank 12 gradually rises until the water surface exceeds the buoyancy sensing ball 235, causing the buoyancy sensing ball 235 to move upwards and touch the contact sensor 234, thus detecting changes in the liquid level inside the lower tank 12. The vertical groove 233 is used for buoyancy sensing... The ball 235 serves as a guide and limiter. The connecting hole 232 and the drain hole 236 allow for cleaning of the insertion rod 231, its internal vertical channel 233, and the installed buoyancy sensing ball 235. The cleaning process is as follows: first, the insertion rod 231 is pulled out of the sampling tank 1. Then, cleaning water is used to rinse the outer surface of the insertion rod 231, and the water flow is introduced into the vertical channel 233 through the connecting hole 232, thereby cleaning the vertical channel 233, the contact sensor 234, and the buoyancy sensing ball 235. The cleaned wastewater is discharged through the drain hole 236. This method ensures the liquid level detection function and allows the water level detection mechanism 23 to be installed entirely outside the sampling tank 1, making it adaptable to the detection process of different sampling tanks 1 without integrating the water level detection mechanism 23 inside the sampling tank 1. This reduces the production difficulty and cost of the sampling tank 1. Simultaneously, it also has a rapid cleaning function, preventing contamination of the internal solution when detecting different samples inside the tank 1.

[0068] It also includes a pushing component 6, which is located beside the mounting column 2. The pushing component 6 includes a push rod 61, a push plate 62, and a horizontal guide seat 63. The push rod 61 is horizontally slidable, and the push plate 62 is fixedly connected to the push rod 61. The horizontal guide seat 63 is fixedly installed on the outer wall of the mounting column 2. The push plate 62 is slidably installed in the horizontal guide seat 63. The insertion rod 231 and the second pressurizing pipe 42 are both fixedly installed on the push plate 62. The lower tank 12 is provided with a sealing port 123 for the insertion of the insertion rod 231 and the second pressurizing pipe 42, and a sealing rubber gasket 124 installed in the sealing port 123.

[0069] When the push assembly 6 is working, the pusher 61 drives the pusher plate 62 to slide in the horizontal guide seat 63. When the pusher plate 62 is displaced, it can drive the connected insertion rod 231 and the second pressurization tube 42 to be inserted or pulled out of the sampling container 1 simultaneously, completing the disassembly and assembly process. The design of the sealing port 123 and the sealing rubber gasket 124 can ensure that the inside of the sampling container 1 is always in a sealed state after insertion and removal.

[0070] The top of the upper tank 11 is provided with a first limiting notch 111, and the top of the mounting column 2 is provided with a second limiting notch 24 at the corresponding position. The first limiting notch 111 and the discharge pipe 22 are combined to form a rectangular notch, and a matching rectangular limiting block 25 is provided inside the rectangular notch.

[0071] To prevent the insertion rod 231 and the second pressurizing tube 42 from being unable to be inserted due to a positional deviation between the sealing port 123 and the insertion rod 231 and the second pressurizing tube 42, a first limiting notch 111 is opened at the top of the upper tank 11, a second limiting notch 24 is opened at the top of the mounting column 2, and a rectangular limiting block 25 is inserted between the first limiting notch 111 and the second limiting notch 24 to limit the overall installation position of the sampling tank 1. This ensures that the sealing port 123 is in the correct position and that the insertion rod 231 and the second pressurizing tube 42 can be inserted normally.

[0072] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A food oil safety detection device based on a biosensor, characterized by, The detection device comprises a biosensor and an electron microscope, and further comprises an internal sampling device, which comprises a sampling tank, a mounting column, a feeding pipe, a pressurizing assembly and a cleaning assembly; The mounting column is provided with a spiral heating pipe in the side wall and a discharge pipe vertically arranged at the bottom; The sampling tank is composed of an upper tank and a lower tank connected by threads, the upper tank is provided with a first filter disc, the lower tank is provided with a second filter disc, and a mounting disc is arranged between the upper tank and the lower tank, the mounting disc is fixedly provided with a center frame, the center frame is composed of a fixed ring, a one-way sealing disc, a contact ring and a guide disc, the mounting disc is threadedly connected with the upper tank, the fixed ring is fixedly arranged on the mounting disc, the one-way sealing disc is vertically slidably arranged below the fixed ring and can be sealed with the fixed ring, a one-way discharge channel is formed between the fixed ring and the one-way sealing disc, the contact ring is fixedly arranged below the one-way sealing disc, the guide disc is arranged between the contact ring and the second filter disc, and the guide disc is in contact with the contact ring and the second filter disc respectively, a first pressurizing space is formed between the first filter disc and the upper tank, a second pressurizing space is formed between the center frame and the second filter disc, and a water level detection mechanism is arranged beside the second filter disc; The feeding pipe is provided with a heating sleeve outside; The pressurizing assembly comprises a first pressurizing pipe communicated with the feeding pipe and a second pressurizing pipe communicated with the second pressurizing space; The cleaning assembly comprises a first cleaning mechanism for cleaning the feeding pipe and a second cleaning mechanism for cleaning the discharge pipe; The one-way sealing disc is connected with the fixed ring through an elastic connecting assembly, the elastic connecting assembly is arranged in multiple groups and annularly distributed around the center axis of the sampling tank, and the elastic connecting assembly comprises a mounting groove, a second connecting rod, a piston, a spring and a locking column, the mounting groove is arranged at the bottom of the fixed ring, the piston is slidably arranged in the mounting groove, the second connecting rod is coaxially arranged with the piston and the top of the second connecting rod is fixedly connected with the piston, the spring is arranged in the mounting groove, and the two ends of the spring are fixedly connected with the top of the mounting groove and the piston respectively, and the second connecting rod is fixedly connected with the one-way sealing disc through the locking column; The top of the one-way sealing disc is provided with a first inclined discharging chamfer, the first inclined discharging chamfer is gradually inclined downward from the center to the outside of the one-way sealing disc, and the edge of the one-way sealing disc is provided with a third sealing ring matched with the fixed ring, and the contact ring is fixedly connected with the mounting disc through a first connecting rod; The top of the guide disc is fixedly provided with a second inclined discharging chamfer, the second inclined discharging chamfer is gradually inclined upward from the center to the outside of the guide disc, the center of the guide disc is provided with a center hole, the bottom of the guide disc is provided with a spiral material guiding channel, the filter holes on the second filter disc are spirally arranged, and the filter holes on the second filter disc are matched with the spiral material guiding channel.

2. The biosensor-based food oil safety testing device of claim 1, wherein, A vertical sliding groove is arranged on the inner side wall of the lower tank, a first limiting block matched with the vertical sliding groove is arranged on the outer side wall of the second filter disc, and a second limiting block matched with the vertical sliding groove is arranged on the outer side wall of the guide disc.

3. The biosensor-based food oil safety testing device of claim 1, wherein, The first cleaning mechanism comprises a steel rope, a cleaning head, a conical head, a contact scraping ring and a sliding frame. The steel rope is arranged through the feeding pipe. The feeding pipe is provided with a through hole for the steel rope at the side wall of both ends. The sliding frame is arranged on the inner wall of the feeding pipe. The contact scraping ring is fixedly installed on the sliding frame. The cleaning head and the conical head are both provided with two and are respectively located at both ends of the contact scraping ring. The steel rope is fixedly connected with the sliding frame.

4. The biosensor-based food oil safety testing device of claim 1, wherein, The second cleaning mechanism comprises a cleaning pipe and a sewage pipe. The cleaning pipe is installed on the side wall of the installation column. The sewage pipe is installed at the bottom of the installation column.

5. The biosensor-based food oil safety testing device of claim 1, wherein, The water level detection mechanism comprises a plug rod, a communication hole, a vertical slot, a contact sensor and a buoyancy sensing ball. The plug rod is horizontally arranged. The vertical slot is arranged in the middle of the plug rod from bottom to top. The communication hole is arranged from one end of the plug rod close to the center of the sampling tank to the vertical slot. The contact sensor is fixedly installed at the top of the vertical slot. The buoyancy sensing ball is arranged in the vertical slot. A plurality of water leakage holes are arranged at the bottom of the vertical slot.

6. The biosensor-based food oil safety testing device of claim 5, wherein, The push assembly is arranged beside the installation column. The push assembly comprises a push rod, a push plate and a horizontal guide seat. The push rod is horizontally arranged. The push plate is fixedly connected with the push rod. The horizontal guide seat is fixedly installed on the outer side wall of the installation column. The push plate is arranged in the horizontal guide seat. The plug rod and the second booster pipe are fixedly installed on the push plate. The lower tank is provided with a sealing opening for the plug rod and the second booster pipe and a sealing rubber pad installed in the sealing opening.

7. The biosensor-based food oil safety testing device of claim 6, wherein, The upper tank is provided with a first limiting notch at the top. The installation column is provided with a second limiting notch at the corresponding position. The first limiting notch and the discharge pipe form a rectangular notch. The rectangular notch is provided with a rectangular limiting block matched therewith.

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