Food grease safety detection device based on biosensor

Abstract

The invention relates to the technical field of biosensor detection, in particular to a food grease safety detection device based on a biosensor. The detection device comprises a biosensor and an electron microscope, and further comprises a built-in sampling device, and the sampling device comprises a sampling tank, a mounting column, a feeding pipe, a pressurizing assembly and a cleaning assembly; a spiral heat supply pipe is arranged in the side wall of the mounting column, and a discharge pipe is vertically arranged at the bottom; the sampling tank is composed of an upper tank and a lower tank which are in threaded connection, a first filtering disc is mounted in the upper tank, a second filtering disc is mounted in the lower tank, a mounting disc is arranged between the upper tank and the lower tank, a first-stage pressurizing space is formed between the first filtering disc and the upper tank, and a second-stage pressurizing space is formed between the center frame and the second filtering disc; a water level detection mechanism is arranged beside the second filter disc; the outer side of the feeding pipe is sleeved with a heat supply sleeve. Efficient layering, precise temperature control and intelligent cleaning of the grease food are achieved, the detection sensitivity is improved, the maintenance cost is reduced, and the device is suitable for multi-scene rapid detection requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of biosensor detection, and specifically to a food oil safety detection device based on a biosensor. Background Art

[0002] With the complexity of the global food supply chain, public health incidents caused by foodborne pathogenic microorganisms are on the rise. These pathogenic microorganisms, by contaminating food matrices, can not only lead to common diseases such as acute gastroenteritis, but may also trigger serious systemic infections. Therefore, establishing a scientific microbial safety assessment system has become the core link in ensuring food safety. Among them, the accurate detection of total colony count, mycotoxins and pathogenic bacteria is not only the technical basis for determining whether food products meet quality standards, but also the key parameter for assessing their potential health risks.

[0003] Existing food oil safety detection technologies have significant defects:

[0004] Difficulty in controlling the fluidity of solid oils: Traditional detection devices lack an efficient constant-temperature heating system. When the ambient temperature is lower than the melting point of the oil (for example, the melting point of palm oil is about 40°C), it is easy to cause the oil inside the feed pipe to solidify, resulting in pipeline blockage or a decrease in the stratification efficiency.

[0005] Outstanding risk of cross-contamination: When the whole device needs to perform a second detection after completing one detection, some of the oil introduced last time still remains in the feed pipe and other parts of the device. Traditional devices cannot remove it. The integrated sampling tank has a complex structure and requires the disassembly of multiple components during cleaning. The residual oil is easily adhered to the surface of the feed pipe and the filtration component, resulting in deviation of the detection results.

[0006] Low stratification and filtration efficiency: Traditional devices rely only on a single pressure source and cannot dynamically adjust filtration parameters according to the filtration position of oil molecules. Summary of the Invention

[0007] Based on this, it is necessary to provide a food oil safety detection device based on a biosensor for the problems of the existing technology.

[0008] To solve the problems of the existing technology, the technical solution adopted by the present invention is as follows:

[0009] The present invention provides a food oil safety detection device based on a biosensor. The detection device includes a biosensor and an electron microscope, and also includes a built-in sampling device. The sampling device includes a sampling tank, a mounting column, a feed pipe, a pressurizing component and a cleaning component;

[0010] A spiral heating pipe is installed inside the side wall of the mounting column, and a discharge pipe is vertically provided at the bottom;

[0011] The sampling tank is composed of an upper tank and a lower tank connected by threads, a first filter disc is installed in the upper tank, a second filter disc is installed in the lower tank, a mounting disc is provided between the upper tank and the lower tank, a center frame is fixedly installed on the mounting disc, the center frame is composed of a fixing ring, a one-way sealing disc, a resistance ring and a guide disc, the mounting disc is threadedly connected to the upper tank, the fixing ring is fixedly installed on the mounting disc, the one-way sealing disc can be vertically slidably arranged below the fixing ring and can be sealed with the fixing ring, a one-way discharge channel can be formed between the fixing ring and the one-way sealing disc, the resistance ring is fixedly installed below the one-way sealing disc, the guide disc is arranged between the resistance ring and the second filter disc, the guide disc resists with the resistance ring and the second filter disc respectively, a primary pressurization space is formed between the first filter disc and the upper tank, a secondary pressurization space is formed between the center frame and the second filter disc, and a water level detection mechanism is provided beside the second filter disc;

[0012] A heating sleeve is provided on the outer side of the feed pipe;

[0013] The boosting assembly includes a first boosting pipe connected to the feed pipe and a second boosting pipe connected to the secondary boosting 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 disk and the fixed ring are connected by an elastic connecting assembly. The elastic connecting assembly is provided with several groups 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 column. The mounting groove is provided at the bottom of the fixed ring. The piston is slidingly 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 to the piston. The spring is arranged in the mounting groove. The two ends of the spring are respectively fixedly connected to the top of the mounting groove and the piston. The second connecting rod is fixedly connected to the one-way sealing disk through the locking column.

[0016] Preferably, a first inclined chamfer is provided on the top of the one-way sealing disk, and the first inclined chamfer is gradually inclined downward from the center to the outside of the one-way sealing disk. A third sealing ring that cooperates with the fixing ring for sealing is provided at the edge of the one-way sealing disk, and the resistance ring is fixedly connected to the mounting disk through a first connecting rod.

[0017] Preferably, a second inclined material cutting chamfer is fixedly provided on the top of the guide plate, and the second inclined material cutting chamfer is arranged on the guide plate to gradually tilt upward from the center to the outside, a center hole is provided at the center of the guide plate, and a spiral material guiding channel is provided at the bottom of the guide plate. The filter holes on the second filter plate are arranged spirally, and the filter holes on the second filter plate match the spiral material guiding channel.

[0018] Preferably, a vertical slide groove is provided on the inner wall of the lower tank, a first limit block cooperating with the vertical slide groove is provided on the outer wall of the second filter plate, and a second limit block cooperating with the vertical slide groove is provided on the outer wall of the guide plate.

[0019] Preferably, the first cleaning mechanism includes a steel wire rope, a cleaning head, a conical head, a contact scraping ring, and a sliding frame. The steel wire rope is disposed through the feeding pipe. Through holes for the steel wire rope to pass through are provided on the side walls at both ends of the feeding pipe. The sliding frame is slidably disposed on the inner wall of the feeding pipe. The contact scraping 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 contact scraping ring. The steel wire rope is fixedly connected to the sliding frame.

[0020] Preferably, the second cleaning mechanism includes a cleaning pipe and a sewage discharge pipe. The cleaning pipe is installed on the side wall of the installation column, and the sewage discharge pipe is installed at the bottom of the installation column.

[0021] Preferably, the water level detection mechanism includes a plug rod, a communication hole, a vertical groove, a contact sensor, and a buoyancy sensing ball. The plug rod is horizontally slidably disposed. A vertical groove is formed in the middle of the plug rod from bottom to top. The communication hole extends from one end of the plug rod close to the center of the sampling tank to communicate with the vertical groove. The contact sensor is fixedly installed at the top of the vertical groove. The buoyancy sensing ball is slidably disposed in the vertical groove. A plurality of water leakage holes are provided at the bottom of the vertical groove.

[0022] Preferably, a pushing component is further included. The pushing component is disposed beside the installation column. The pushing component includes a push rod, a pushing plate, and a horizontal guiding seat. The push rod is horizontally slidably disposed. The pushing plate is fixedly connected to the push rod. The horizontal guiding seat is fixedly installed on the outer side wall of the installation column. The pushing plate is slidably disposed in the horizontal guiding seat. The plug rod and the second pressurizing pipe are both fixedly installed on the pushing plate. A sealing port for the plug rod and the second pressurizing pipe to insert and a sealing rubber pad installed in the sealing port are provided on the lower tank.

[0023] Preferably, a first limiting notch is provided at the top of the upper tank, and a second limiting notch is provided at the corresponding position at the top of the installation column. The first limiting notch and the discharge pipe form a rectangular notch, and a rectangular limiting block matching the rectangular notch is provided in the rectangular notch.

[0024] The beneficial effects of the present invention compared with the prior art are as follows:

[0025] 1. The present invention adopts a dual constant temperature heating system (spiral heating pipe + heating sleeve) to ensure the fluidity of grease, avoid solidification and blockage. The modular detachable sampling tank supports quick replacement and dynamic pressure control of the double pressurizing space, improves the layering efficiency, enhances the detection effect. The present invention realizes efficient layering, precise temperature control and intelligent cleaning of grease foods, improves the detection sensitivity, reduces the maintenance cost, and is applicable to the rapid detection requirements of multiple scenarios.

[0026] 2. The first cleaning mechanism greatly reduces the residue rate of the feeding pipe. The external water level detection mechanism can be independently cleaned to avoid cross contamination. The secondary cleaning mechanism can clean the discharge pipe. The center frame ensures the accurate opening of the one-way discharge channel and prevents the backflow of grease. Description of the Drawings

[0027] Figure 1 is a schematic three - dimensional structure diagram of a food oil safety detection device based on a biosensor;

[0028] Figure 2 is a schematic three - dimensional structure diagram of a sampling tank in a food oil safety detection device based on a biosensor;

[0029] Figure 3 is the sectional view of the sampling tank and its internal structure in a food oil safety detection device based on a biosensor Figure 1 ;

[0030] Figure 4 is the sectional view of the sampling tank and its internal structure in a food oil safety detection device based on a biosensor Figure 2 ;

[0031] Figure 5 is a schematic three - dimensional sectional view of a sampling tank in a food oil safety detection device based on a biosensor;

[0032] Figure 6 is a schematic three - dimensional exploded view of a sampling tank in a food oil safety detection device based on a biosensor Figure 1 ;

[0033] Figure 7 is a schematic three - dimensional exploded view of a sampling tank in a food oil safety detection device based on a biosensor Figure 2 ;

[0034] Figure 8 is a quarter sectional view of a central frame in a food oil safety detection device based on a biosensor;

[0035] Figure 9 is a schematic three - dimensional sectional view of a central frame in a food oil safety detection device based on a biosensor;

[0036] Figure 10 is Figure 9 an enlarged view of part B in;

[0037] Figure 11 is a schematic three - dimensional exploded view of a water level detection mechanism in a food oil safety detection device based on a biosensor;

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

[0039] Figure 13 is Figure 3 an enlarged view of part A in.

[0040] The labels in the figure are:

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

[0042] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0043] As Figure 1 - Figure 13 shown in the food oil safety detection device based on a biosensor, the detection device includes a biosensor and an electron microscope, and further includes a built-in sampling device, and the sampling device includes a sampling tank 1, a mounting column 2, a feed pipe 3, a pressurization assembly 4 and a cleaning assembly 5;

[0044] A spiral heating pipe 21 is installed inside the side wall of the mounting column 2, and a discharge pipe 22 is vertically arranged at the bottom.

[0045] The sampling tank 1 is composed of an upper tank 11 and a lower tank 12 connected by threads. A first filter disc 15 is installed in the upper tank 11, and a second filter disc 16 is installed in the lower tank 12. A mounting disc 13 is provided between the upper tank 11 and the lower tank 12. A center frame 14 is fixedly installed on the mounting disc 13. The center frame 14 is composed of a fixing ring 141, a one-way sealing disc 142, a resistance ring 143 and a guide disc 144. The mounting disc 13 is threadedly connected to the upper tank 11, and the fixing ring 141 is fixedly installed on the mounting disc 13. The one-way sealing disc 142 is vertically slidable and arranged below the fixing ring 141 and can be sealed with the fixing ring 141 (such as Figure 9 As shown in the figure, a one-way discharge channel can be formed between the fixing ring 141 and the one-way sealing disc 142 (the one-way discharge channel is annular, that is, after the one-way sealing disc 142 moves downward, a gap leaked from the original sealing position between the fixing ring 141 is formed), the abutment ring 143 is fixedly installed below the one-way sealing disc 142, the guide disc 144 is arranged between the abutment ring 143 and the second filter disc 16, the guide disc 144 abuts against the abutment ring 143 and the second filter disc 16 respectively, a primary pressurization space is formed between the first filter disc 15 and the upper tank 11, a secondary pressurization space is formed between the center frame 14 and the second filter disc 16, and a water level detection mechanism 23 is arranged beside the second filter disc 16;

[0046] The outer side of the feed pipe 3 is provided with a heating sleeve 31;

[0047] The boosting assembly 4 includes a first boosting pipe 41 communicating with the feed pipe 3 and a second boosting pipe 42 communicating with the secondary boosting space;

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

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

[0050] The key point is that the present invention can accurately detect solid fats and oils. This device has a constant temperature heating function. The whole sampling tank 1 located inside the installation column 2 is heated through the spiral heating pipe 21, ensuring that the fats and oils inside the sampling tank 1 do not solidify during stratified sample retention. The fats and oils to be detected inside the supply pipe 3 are heated through the heating sleeve 31. Through heating, the original solid fats and oils can smoothly flow inside the supply pipe 3. Moreover, the cleaning component 5 provided in this device can ensure that after one detection, the device has a relatively thorough cleaning function, avoiding the remaining solid fats and oils from sticking inside the supply pipe 3 or other detection positions, and improving the accuracy of subsequent detections of the device.

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

[0052] The inside of the supply pipe 3 can be cleaned through the first cleaning mechanism 51, and the discharge pipe 22 can be cleaned after use through the second cleaning mechanism 52.

[0053] The one-way sealing plate 142 and the fixed ring 141 are connected through the elastic connection component 17. There are several groups of elastic connection components 17 and they are annularly distributed around the central axis of the sampling tank 1. The elastic connection component 17 includes an installation groove 171, a second connecting rod 172, a piston 173, a spring 174 and a locking column 175. The installation groove 171 is opened at the bottom of the fixed ring 141. The piston 173 is slidably arranged in the installation groove 171. The second connecting rod 172 is coaxially arranged with the piston 173 and the top of the second connecting rod 172 is fixedly connected to the piston 173. The spring 174 is arranged in the installation groove 171, and the two ends of the spring 174 are respectively fixedly connected to the top of the installation groove 171 and the piston 173. The second connecting rod 172 is fixedly connected to the one-way sealing plate 142 through the locking column 175.

[0054] The elastic connection between the fixed ring 141 and the one-way sealing plate 142 is realized through the setting of the elastic connection component 17. In the initial state, the one-way sealing plate 142 is hermetically connected to the fixed ring 141. When the first pressurizing pipe 41 works, the pressure in the primary pressurizing space increases. The grease to be detected passes through the first filter plate 15 and enters the central frame 14. Under the action of the pressure, the one-way sealing plate 142 moves downward, exposing the one-way discharge channel between the fixed ring 141 and the one-way sealing plate 142, enabling normal discharging operation. When more refined screening is required, the pressure needs to be increased to improve the screening rate of the second filter plate 16. At this time, the second pressurizing pipe 42 works, and the pressure in the secondary pressurizing space increases. At this time, under the elastic force of the spring 174, the second connecting rod 172 resets, and the edge of the one-way sealing plate 142 is hermetically connected to the fixed ring 141. Moreover, the increased pressure can make the fixed ring 141 and the one-way sealing plate 142 fit more closely, preventing the grease after primary screening from flowing back upward, thereby improving the grease screening flow rate.

[0055] The installation groove 171 is used to install the piston 173 and the spring 174. The piston 173 moves upward under the elastic force of the spring 174, thereby driving the second connecting rod 172 fixedly connected to the piston 173 to move synchronously. The second connecting rod 172 drives the one-way sealing plate 142 fixedly connected thereto to move synchronously through the locking column 175, thus realizing the driving function of the one-way sealing plate 142. The initial discharging state is that the pressure inside the upper tank 11 forces the one-way sealing plate 142 to move downward against the elastic force of the spring 174.

[0056] The top of the one-way sealing plate 142 is provided with a first inclined discharging chamfer 145, and the first inclined discharging chamfer 145 is gradually inclined downward from the center to the outside of the one-way sealing plate 142. A third sealing ring 146 that is hermetically matched with the fixed ring 141 is provided at the edge of the one-way sealing plate 142. The abutting ring 143 is fixedly connected to the mounting plate 13 through the first connecting rod 147.

[0057] The first inclined discharging chamfer 145 facilitates the grease flowing onto the one-way sealing plate 142 to gradually flow downward and outward along the inclined direction of the first inclined discharging chamfer 145, so as to facilitate its passage through the one-way discharge channel. The one-way sealing plate 142 and the fixed ring 141 can be hermetically connected through the third sealing ring 146 during sealing. The first connecting rod 147 fixedly connects the abutting ring 143 and the mounting plate 13.

[0058] A second inclined blanking chamfer 148 is fixedly provided at the top of the guiding tray 144. The second inclined blanking chamfer 148 is arranged on the guiding tray 144 to gradually incline upward from the center to the outside. A central hole 149 is provided at the center of the guiding tray 144. A spiral feeding channel 1411 is provided at the bottom of the guiding tray 144. The filter holes on the second filter tray 16 are arranged in a spiral pattern, and the filter holes on the second filter tray 16 match the spiral feeding channel 1411.

[0059] Through the abutting ring 143, the guiding tray 144 can be firmly pressed against the second filter tray 16 (the mounting tray 13 is connected to the abutting ring 143 through the first connecting rod 147, so that the position of the abutting ring 143 is fixed. The abutting ring 143 abuts against the guiding tray 144 in contact with it, and the guiding tray 144 abuts against the second filter tray 16 in contact with it, so that the second filter tray 16 is locked in the lower tank 12). This can fix the guiding tray 144 and the second filter tray 16 at the same time, keeping their positions fixed. The grease gradually flows towards the center of the guiding tray 144 through the second inclined blanking chamfer 148, and then is introduced into the spiral feeding channel 1411 through the central hole 149, and then gradually flows along the spiral track of the spiral feeding channel 1411 and is gradually filtered by the second filter tray 16 during the flowing process.

[0060] Vertical sliding grooves 122 are formed on the inner side wall of the lower tank 12 (as Figure 6 shown). A first limiting block 161 that cooperates with the vertical sliding groove 122 is provided on the outer side wall of the second filter tray 16, and a second limiting block 1412 that cooperates with the vertical sliding groove 122 is provided on the outer side wall of the guiding tray 144.

[0061] Through the cooperation of the vertical sliding groove 122 with the first limiting block 161 and the second limiting block 1412, the installation positions of the guiding tray 144 and the second filter tray 16 are determined, and further ensure that the spiral feeding channel 1411 can correspond to the spiral - arranged filter holes on the second filter tray 16, ensuring the accuracy of screening materials.

[0062] The first cleaning mechanism 51 includes a steel wire rope 511, a cleaning head 512, a tapered head 513, an abutting scraping ring 514, and a sliding bracket 515. The steel wire rope 511 is arranged through the feeding pipe 3 (as Figure 13 shown). Through holes for the steel wire rope 511 to pass through are provided on the side walls at both ends of the feeding pipe 3. The sliding bracket 515 is slidably arranged on the inner wall of the feeding pipe 3. The abutting scraping ring 514 is fixedly installed on the sliding bracket 515. There are two cleaning heads 512 and two tapered heads 513, which are respectively located at both ends of the abutting scraping ring 514. The steel wire rope 511 is fixedly connected to the sliding bracket 515.

[0063] To prevent grease from depositing inside the feed pipe 3 and contaminating the pipe, which may affect the accuracy of secondary detection, it is necessary to clean the inside of the feed pipe 3. The sliding frame 515 is pulled by the steel rope 511 to slide inside the feed pipe 3. During the sliding process of the sliding frame 515, the cleaning head 512, the conical head 513, and the contact scraping ring 514 installed on it are driven to move synchronously. The cleaning head 512 is used to spray cleaning water into the inside of the feed pipe 3, and the contact scraping ring 514 is used to scrape the residual grease inside the feed pipe 3, thereby realizing the pipe cleaning function. The conical head 513 can facilitate the overall displacement of the sliding frame 515. At the same time, the entire sliding frame 515 can be pulled out from the end of the feed pipe 3 away from the sampling tank 1. In this state, the smooth operation of the grease can be ensured. During cleaning, the steel rope 511 can be pulled to drive the entire sliding frame 515 to run along the pipe track of the feed pipe 3.

[0064] The second cleaning mechanism 52 includes a cleaning pipe 521 and a sewage discharge pipe 522 (as Figure 3 shown), the cleaning pipe 521 is installed on the side wall of the mounting column 2, and the sewage discharge pipe 522 is installed at the bottom of the mounting column 2.

[0065] When it is necessary to clean the discharge pipe 22, the entire sampling tank 1 is taken out of the mounting column 2. At this time, the inside of the mounting column 2 can be cleaned through the second cleaning mechanism 52. The 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 sewage discharge pipe 522.

[0066] The water level detection mechanism 23 includes a plug rod 231, a communication hole 232, a vertical groove 233, a contact sensor 234, and a buoyancy sensing ball 235. The plug rod 231 is horizontally slidably arranged (as Figure 11 shown), a vertical groove 233 is opened in the middle of the plug rod 231 from bottom to top, the communication hole 232 extends from one end of the plug rod 231 close to the center of the sampling tank 1 to communicate with the vertical groove 233, the contact sensor 234 is fixedly installed at the top of the vertical groove 233, the buoyancy sensing ball 235 is slidably arranged in the vertical groove 233, and a plurality of water leakage holes 236 are opened at the bottom of the vertical groove 233.

[0067] When the water level detection mechanism 23 is working, the rod 231 is first inserted into the lower tank 12 to communicate with the internal space of the lower tank 12, so as to detect the water level condition inside the lower tank 12, and perform operations such as draining or stopping feeding according to the settings. When feeding is continued, the water level inside the lower tank 12 gradually rises until the water surface exceeds the buoyancy sensor ball 235, and drives the buoyancy sensor ball 235 to move upward, so that the buoyancy sensor ball 235 touches the resistance sensor 234, which plays the function of detecting the change of the liquid level inside the lower tank 12. The vertical groove 233 is used to The ball 235 plays a guiding and limiting role. The setting of the connecting hole 232 and the water leakage hole 236 can clean the plug rod 231 and its internal channel vertical groove 233 and the installed buoyancy sensor ball 235. The cleaning process is as follows: first pull the plug rod 231 out of the sampling tank 1. At this time, the outer surface of the plug rod 231 is rinsed with cleaning water, and the water flow is introduced into the vertical groove 233 through the connecting hole 232, and then the vertical groove 233, the conflict sensor 234, and the buoyancy sensor ball 235 are cleaned. The cleaned sewage is discharged through the water leakage hole 236. The above method can ensure the realization of the liquid level detection function, and at the same time, the water level detection mechanism 23 can be set as a whole outside the sampling tank 1, so that it can adapt to the detection process of different sampling tanks 1. There is no need to integrate the water level detection mechanism 23 into the sampling tank 1, which reduces the production difficulty of the sampling tank 1 and reduces its production cost. At the same time, it also has a quick cleaning function to avoid contamination of the internal solution of different sampling tanks 1 when detecting the inside of different sampling tanks 1.

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

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

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

[0071] To prevent the position deviation between the sealing port 123 and the insertion rod 231 and the second supercharging pipe 42 during the insertion of the insertion rod 231 and the second supercharging pipe 42, resulting in the inability to insert, 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 installation position of the whole sampling tank 1, that is, to ensure that the position of the sealing port 123 is in the correct position and ensure that the insertion rod 231 and the second supercharging pipe 42 can be inserted normally.

[0072] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A food oil safety detection device based on a biosensor, characterized in that, The detection device includes a biosensor and an electron microscope, and also includes a built-in sampling device, which includes a sampling tank, a mounting column, a feed pipe, a pressurizing component and a cleaning component; A spiral heating pipe is installed in the side wall of the installation column and a discharge pipe is vertically arranged at the bottom; The sampling tank is composed of an upper tank and a lower tank connected by threads, a first filter disc is installed in the upper tank, a second filter disc is installed in the lower tank, a mounting disc is provided between the upper tank and the lower tank, a center frame is fixedly installed on the mounting disc, the center frame is composed of a fixing ring, a one-way sealing disc, a resistance ring and a guide disc, the mounting disc is threadedly connected to the upper tank, the fixing ring is fixedly installed on the mounting disc, the one-way sealing disc can be vertically slidably arranged below the fixing ring and can be sealed with the fixing ring, a one-way discharge channel can be formed between the fixing ring and the one-way sealing disc, the resistance ring is fixedly installed below the one-way sealing disc, the guide disc is arranged between the resistance ring and the second filter disc, the guide disc resists with the resistance ring and the second filter disc respectively, a primary pressurization space is formed between the first filter disc and the upper tank, a secondary pressurization space is formed between the center frame and the second filter disc, and a water level detection mechanism is provided beside the second filter disc; A heating sleeve is provided on the outer side of the feed pipe; The boosting assembly includes a first boosting pipe connected to the feed pipe and a second boosting pipe connected to the secondary boosting space; The cleaning assembly includes a first cleaning mechanism for cleaning the feed pipe and a second cleaning mechanism for cleaning the discharge pipe.

2. The food oil safety detection device based on a biosensor according to claim 1, wherein, The one-way sealing disk is connected to the fixed ring by an elastic connection component. The elastic connection component is provided with several groups and is distributed in a ring around the central axis of the sampling tank. The elastic connection component includes a mounting groove, a second connecting rod, a piston, a spring and a locking column. The mounting groove is provided at the bottom of the fixed ring. The piston is slidingly 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 to the piston. The spring is arranged in the mounting groove. The two ends of the spring are respectively fixedly connected to the top of the mounting groove and the piston. The second connecting rod is fixedly connected to the one-way sealing disk through the locking column.

3. The food oil safety detection device based on a biosensor according to claim 2, characterized in that, A first inclined chamfer is provided on the top of the one-way sealing disk, and the first inclined chamfer is gradually inclined downward from the center to the outside of the one-way sealing disk. A third sealing ring is provided at the edge of the one-way sealing disk to seal with the fixing ring, and the resistance ring is fixedly connected to the mounting disk through the first connecting rod.

4. The food oil safety detection device based on a biosensor according to claim 3, characterized in that, A second inclined material discharge chamfer is fixedly provided on the top of the guide plate. The second inclined material discharge chamfer is gradually inclined upward from the center to the outside on the guide plate. A center hole is provided at the center of the guide plate. A spiral material guide channel is provided at the bottom of the guide plate. The filter holes on the second filter plate are spirally arranged, and the filter holes on the second filter plate match the spiral material guide channel.

5. The food oil safety detection device based on a biosensor according to claim 4, wherein A vertical slide groove is provided on the inner wall of the lower tank, a first limit block cooperating with the vertical slide groove is provided on the outer wall of the second filter plate, and a second limit block cooperating with the vertical slide groove is provided on the outer wall of the guide plate.

6. The food oil safety detection device based on a biosensor according to claim 1, characterized in that The first cleaning mechanism includes a steel rope, a cleaning head, a conical head, a contact scraping ring, and a sliding frame. The steel rope is disposed through the feeding pipe. Through holes for the steel rope to pass through are provided on the side walls at both ends of the feeding pipe. The sliding frame is slidably disposed on the inner wall of the feeding pipe. The contact scraping 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 contact scraping ring. The steel rope is fixedly connected to the sliding frame.

7. The food oil safety detection device based on a biosensor according to claim 1, characterized in that, The second cleaning mechanism includes a cleaning pipe and a sewage discharge pipe. The cleaning pipe is installed on the side wall of the installation column, and the sewage discharge pipe is installed at the bottom of the installation column.

8. The food oil safety detection device based on a biosensor according to claim 1, characterized in that The water level detection mechanism includes a plug rod, a communication hole, a vertical groove, a contact sensor, and a buoyancy sensing ball. The plug rod is horizontally slidably disposed. A vertical groove is formed in the middle of the plug rod from bottom to top. The communication hole extends and communicates from one end of the plug rod close to the center of the sampling tank to the vertical groove. The contact sensor is fixedly installed at the top of the vertical groove. The buoyancy sensing ball is slidably disposed in the vertical groove. A plurality of water leakage holes are provided at the bottom of the vertical groove.

9. The food oil safety detection device based on a biosensor according to claim 8, wherein It further includes a pushing assembly. The pushing assembly is disposed beside the installation column. The pushing assembly includes a push rod, a pushing plate, and a horizontal guiding seat. The push rod is horizontally slidably disposed. The pushing plate is fixedly connected to the push rod. The horizontal guiding seat is fixedly installed on the outer side wall of the installation column. The pushing plate is slidably disposed in the horizontal guiding seat. The plug rod and the second pressurizing pipe are both fixedly installed on the pushing plate. A sealing port for the plug rod and the second pressurizing pipe to insert into and a sealing rubber pad installed in the sealing port are provided on the lower tank.

10. The food oil safety detection device based on a biosensor according to claim 9, wherein, A first limiting notch is provided at the top of the upper tank, and a second limiting notch is provided at the corresponding position at the top of the installation column. The first limiting notch and the discharge pipe form a rectangular notch together. A rectangular limiting block matching the rectangular notch is provided in the rectangular notch.

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