Illegal cooking oil sampling and detecting device

Abstract

The invention discloses a swill-cooked dirty oil sampling and detecting device which comprises a working box, the working box comprises a box body, a top plate is arranged at the top of the box body, a mounting transverse plate is fixed to the middle of the inner side of the box body, a mounting vertical plate is arranged on one side of the top plate, and a sampling part is mounted on the inner side of the box body and located at the bottom of the mounting transverse plate and used for sampling swill-cooked dirty oil of different depths; a stirring part is mounted between the mounting transverse plate and the top plate. Through the design of the sampling part, swill-cooked dirty oil at different depths can be pre-sampled, swill-cooked dirty oil at the lower layer can be conveniently taken, the detection accuracy is improved, through the structural design of the stirring part, the swill-cooked dirty oil can be quantitatively sampled, meanwhile, the swill-cooked dirty oil subjected to quantitative sampling and an auxiliary reagent can be uniformly stirred and mixed, and the detection accuracy is improved. On the other hand, the inner wall of the stirring pipe can be cleaned after sampling is completed, and the whole stirring part is compact in structure, high in integration degree, diversified in function and high in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of waste cooking oil detection, and in particular to a waste cooking oil sampling and detection device. Background Art

[0002] The scientific name of gutter oil is "waste edible oil", which refers to the inedible animal and plant oils produced by restaurants and food processing enterprises during the production and operation process, including the oil discarded after multiple frying and deep-frying. Since these waste oils are discharged into municipal sewers or oil and slag separation sewage pools, they are commonly known as gutter oil. Gutter oil is often mixed with domestic garbage, feces, mold and parasites, so it will gradually undergo a series of changes such as hydrolysis, oxidation, condensation, polymerization, increased acidity, darkening of color, etc., producing free fatty acids, dimers and polymers of fatty acids, peroxides, polycyclic aromatic hydrocarbons, low molecular weight decomposition products, etc. In addition, the rancidity index of gutter oil far exceeds the national regulations. Long-term intake will cause weight loss and developmental disorders, and people will be prone to diarrhea and enteritis, and have liver, heart and kidney enlargement and fatty liver diseases. The aflatoxin toxicity produced by waste cooking oil not only easily causes liver cancer, but also tumors in other parts of the body, such as gastric adenocarcinoma, kidney cancer, rectal cancer, breast cancer, ovary cancer, small intestine cancer, etc. If waste cooking oil is not properly handled, it will not only seriously affect the city environment and the lives of citizens, but also cause large-scale water pollution.

[0003] In the existing technology, sampling is also a relatively troublesome problem in the detection of waste oil. Most of the existing waste oil collection methods are to use simple tools such as spoons and buckets to complete the collection of waste oil. This method of collecting waste oil increases the labor intensity of the staff too much, so that the rate of the entire waste oil collection work is greatly reduced. At the same time, the amount and the location of the sampling will affect the final test results. When testing the waste oil content in the oil barrel, due to the different densities of waste oil and non-waste oil, if only the upper liquid is taken for testing, the result will be inaccurate, and it is necessary to go deep into the oil barrel to take samples and then test. Moreover, in the prior art, after sampling, it is difficult to solve the problem of cleaning the cavity, otherwise it will affect the accuracy of the next detection. At the same time, in the prior art, after sampling the waste oil, a certain amount of plasma water needs to be added and mixed and shaken, and the lower layer of water needs to be taken out for detection after standing. After the detection, the detection head needs to be cleaned. In the prior art, multiple steps such as sampling, adding plasma water, mixing, stirring, detection, and cleaning are mostly performed independently. The whole process is relatively complicated and inconvenient for sampling and detection.

[0004] Based on this, a waste cooking oil sampling and detection device is proposed, which provides a new solution to the above technical problems. Summary of the invention

[0005] Based on this, it is necessary to provide a waste cooking oil sampling and detection device that integrates sampling at different depths, quantitative sampling, adding auxiliary reagents, stirring, detection, and cleaning to address the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The waste cooking oil sampling and detection device specifically includes a working box, which includes a box body, a top plate is provided on the top of the box body, a mounting horizontal plate is fixed to the middle of the inner side of the box body, a mounting vertical plate is provided on one side of the top plate, a sampling part is installed on the inner side of the box body and at the bottom of the mounting horizontal plate, which is used to sample waste cooking oil of different depths; a stirring part is installed between the mounting horizontal plate and the top plate, which is used to quantitatively sample the waste cooking oil, stir and mix it, and clean the stirring part after sampling; an auxiliary material adding part is provided on one side of the stirring part, which is used to quantitatively add auxiliary reagents; a detection part is installed on one side of the mounting vertical plate, which is used to detect waste cooking oil.

[0007] Preferably, the sampling part includes a sampling cylinder installed on the top of the mounting cross plate, the output end of the sampling cylinder passes through the mounting cross plate and is fixed with a moving wheel, the end corner of the moving wheel is slidably connected to the inner side with a first guide rod, the first guide rod is fixedly connected to the mounting cross plate and the box body, a first water pump is installed on the top of the sampling mounting plate, the input end of the first water pump is connected to a sampling tube, the sampling tube passes through the bottom of the box body, the output end of the first water pump is connected to a first connecting tube, the end of the first connecting tube away from the first water pump is connected to a sample storage box, the sample storage box is installed on the top of the sampling mounting plate, the top of the sample storage box is connected to a second connecting tube, the second connecting tube is connected to a first one-way valve, and a plurality of filter holes are provided at the bottom of the outer periphery of the sampling tube.

[0008] Preferably, the stirring portion includes a stirring tube installed on the top of the mounting cross plate, the second connecting tube is connected to the bottom of the outer periphery of the stirring tube, a first supporting sheet is fixed on the inner side of the stirring tube, a second supporting sheet is fixed on the inner side of the stirring tube and located above the first supporting sheet, a first lifting driving cylinder is rotatably connected between the second supporting sheet and the first supporting sheet, a first piston rod is threadedly connected to the inner side of the first lifting driving cylinder, a first piston head is detachably connected to the bottom of the first piston rod, a plurality of connecting protrusions are provided on the top of the outer periphery of the first piston head, a plurality of limiting grooves matched with the connecting protrusions are provided on the inner wall of the stirring tube, the first piston head is slidably connected to the stirring tube through the cooperation of the connecting protrusions and the corresponding limiting grooves, a third driving motor is installed on the bottom of the second supporting sheet and located on one side of the first lifting driving cylinder, the output end of the third driving motor passes through the second supporting sheet and is fixed with a sixth gear, the top of the first lifting driving cylinder passes through the second supporting sheet and a seventh gear is fixed on its outer side, and the seventh gear is meshed and connected with the sixth gear.

[0009] Preferably, at least one second sealing ring is sleeved on the outer periphery of the first piston head for sealing the first piston head and the inner wall of the stirring tube; the top of the first piston head is fixedly connected to a piston cover plate by screws; a first sealing ring is provided between the connecting protrusion and the piston cover plate for sealing the connecting protrusion and the inner wall of the limiting groove.

[0010] Preferably, a third support plate is fixed to the inner side of the stirring tube and above the second support plate, a stirring rod is rotatably connected to the inner side of the third support plate, the stirring rod is inserted into the inner side of the first piston rod and rotatably connected thereto, the bottom of the stirring rod passes through the first piston head and is fixed with a stirring head, the top of the stirring head passes through the third support plate and a fifth gear is fixed to the outside thereof, a second drive motor is installed at the bottom of the third support plate, the output end of the second drive motor passes through the fourth gear, and the fourth gear is meshingly connected to the fifth gear.

[0011] Preferably, a cleaning tube is inserted into the inner side of the stirring rod, and the cleaning tube is threadedly connected to the top of the stirring tube. A first driving motor is installed on the top of the stirring tube, and the output end of the first driving motor passes through the stirring tube and is fixed with a first gear. The first gear is meshed and connected with a second gear on a side close to the cleaning tube, and the second gear is rotatably connected to the stirring tube. The second gear is meshed and connected with a third gear on a side close to the cleaning tube, and the third gear is rotatably connected to the stirring tube. The third gear is sleeved on the outer side of the cleaning tube, and a plurality of limit strips are provided on the inner side of the third gear. A plurality of connecting grooves matched with the limit strips are opened on the outer periphery of the top of the cleaning tube. The third gear is connected to the cleaning pipe through the cooperation of the limit bar and the connecting groove; the top of the cleaning pipe is connected to a third connecting pipe, a liquid storage tank is provided on the mounting cross plate, a second water pump is installed on the top of the liquid storage tank, the input end of the second water pump extends into the inner bottom of the liquid storage tank, a reversing valve is installed on the top of the top plate, the input end of the reversing valve is connected to the output end of the second water pump, and the end of the third connecting pipe away from the cleaning pipe is connected to one of the output ends of the reversing valve; a plurality of second water outlet holes are provided on the outer periphery of the stirring head, and a plurality of first water outlet holes corresponding to the second water outlet holes are provided on the cleaning pipe at the same horizontal position as the second water outlet holes.

[0012] Preferably, a contraction section is provided on the cleaning pipe at the same horizontal position as the second water outlet, the first water outlet is opened on the outer periphery of the contraction section, and a water storage chamber is opened on the inner side of the stirring head at the same horizontal position as the contraction section.

[0013] Preferably, the auxiliary material adding part includes an injection tube installed on the top plate and located on one side of the stirring tube, the bottom of the injection tube is connected to a fourth connecting tube, the fourth connecting tube is connected to the middle of the injection tube, and the fourth connecting tube is connected to a second one-way valve; the top of the fourth connecting tube is detachably connected to a mounting cover plate, the inner side of the mounting cover plate is rotatably connected to a second lifting drive cylinder, the inner side of the second lifting drive cylinder is threadedly connected to a second piston rod, the bottom of the second piston rod is fixedly connected to a second piston head, the second piston head is slidably connected to the injection tube, a fourth drive motor is installed on the top of the mounting cover plate, the output end of the fourth drive motor passes through the mounting cover plate and is fixed with a first pulley, and the outer bottom of the second lifting drive cylinder is fixed with a second The second pulley is rotatably connected to the injection tube, a transmission belt is connected to the outer side of the first pulley and the second pulley, at least one third sealing ring is sleeved on the outer side of the second piston head for sealing between the inner wall of the injection tube and the second piston head, a sliding connection groove is provided on the outer periphery of the second piston rod, a sliding connection strip matched with the sliding connection groove is provided on the inner side of the top of the injection tube, the second piston rod is connected to the injection tube through the cooperation of the sliding connection groove and the sliding connection strip, a liquid storage tank is provided on the top plate, and the bottom output end of the liquid storage tank is connected to a fifth connecting pipe, a third one-way valve is connected to the fifth connecting pipe, and one end of the fifth connecting pipe is connected to the middle of the injection tube and is located below the second piston head.

[0014] Preferably, the detection part includes a detection tube detachably mounted on the mounting horizontal plate and located on one side of the stirring tube, the stirring tube is connected to a sixth connecting tube at the bottom of one side close to the detection tube, the sixth connecting tube is connected to a fourth one-way valve, one end of the sixth connecting tube is detachably connected to the top of the outer periphery of the detection tube, the mounting vertical plate is provided with a threaded rod at the top of one side close to the detection tube, the threaded rod is rotatably connected to the box body, a mounting block is threadedly connected to the outer side of the threaded rod, a fifth driving motor is mounted on one side of the box body, an output end of the fifth driving motor is fixedly connected to the threaded rod, a second guide rod is slidably connected to the inner side of the mounting block and located above and below the threaded rod, the second guide rod is fixedly connected to the box body, a detection cylinder is mounted on the second guide rod, the output end of the detection cylinder passes through the mounting block and is fixed with a detection head, a dust cover is fixed on the side of the mounting block away from the liquid storage tank, and the dust cover is located above the opening of the detection tube.

[0015] Preferably, a cleaning cylinder is installed on the inner side of the mounting horizontal plate and on the side of the detection tube away from the dust cover plate, a waste liquid collection box is provided on the inner side of the box body and below the cleaning cylinder, a plurality of cleaning tubes are provided on the outer periphery of the cleaning tube, a plurality of cleaning heads are provided on the cleaning tubes, the cleaning heads extend into the inner side of the cleaning tube, the tops of the plurality of cleaning tubes pass through the mounting horizontal plate and are connected to a seventh connecting tube, one end of the seventh connecting tube is connected to one of the output ends of the reversing valve.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can pre-sample the waste oil at different depths through the design of the sampling part, so as to obtain the waste oil at the lower layer and improve the accuracy of detection.

[0017] 2. The present invention can quantitatively sample waste oil through the structural design of the stirring part, and at the same time, the waste oil after quantitative sampling can be stirred and mixed evenly with the auxiliary reagent to provide samples for detection and improve convenience during use. On the other hand, the inner wall of the stirring tube can be cleaned after the sampling is completed. The structure of the entire stirring part is compact, the degree of integration is high, the functions are diverse, and the practicability is high.

[0018] 3. The present invention can quantitatively add auxiliary reagents through the structural design of the auxiliary material adding part to facilitate the processing of the sample, thereby improving the detection accuracy.

[0019] 4. The present invention can automatically detect samples through the structural design of the detection part, and the detection head can be cleaned after the detection, thereby improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the scheme of the present invention, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the axial structure of the present invention; Figure 3 The structure of the interior of the box of the present invention is schematically shown in FIG. Figure 1 ; Figure 4 The structure of the interior of the box of the present invention is schematically shown in FIG. Figure 2 ; Figure 5 The structure of the interior of the box of the present invention is schematically shown in FIG. Figure 3 ; Figure 6 This is a schematic diagram of the structure of the sampling tube, the stirring tube, the injection tube, the detection tube, and the second support sheet of the present invention; Figure 7 The structure of the stirring part of the present invention is shown in FIG. Figure 1 ; Figure 8 The structure diagram of the stirring part and the auxiliary material adding part of the present invention is shown in FIG. Figure 1 ; Fig. 9 The structure diagram of the stirring part and the auxiliary material adding part of the present invention is shown in FIG. Figure 2 ; Fig.10 The structure diagram of the stirring part and the auxiliary material adding part of the present invention is shown in FIG. Figure 3 ; Fig.11 It is a schematic structural diagram of the first lifting drive cylinder, the first piston rod, the stirring rod and the cleaning tube of the present invention; Fig.12 It is a schematic diagram of the structure of the contraction section and the water storage chamber of the present invention; Fig.13 It is a schematic diagram of the structure of the limit strip and the connecting groove of the present invention; Fig.14 It is a schematic structural diagram of the first piston head and the second sealing ring of the present invention; Fig.15 It is a schematic diagram of the structure of the limiting groove and the connecting protrusion of the present invention; Fig.16 It is a schematic structural diagram of the detection unit of the present invention.

[0022] The markings in the figure are as follows: 100, working box; 200, sampling part; 300, stirring part; 400, auxiliary material adding part; 500, detection part; 101, box body; 102, moving wheel; 103, push-pull handle; 104, observation door; 105, installation horizontal plate; 106, installation vertical plate; 107, top plate; 201, sampling cylinder; 202, sampling installation plate; 203, first guide rod; 204, first water pump; 205, sampling tube; 206, first connecting tube; 207, sample storage box; 208, second connecting tube; 209, first one-way valve; 210, filter hole; 301, stirring tube; 302, first support sheet; 303, second support sheet; 304, third support sheet; 305, first lifting drive cylinder; 306, first piston rod; 307, first piston head; 308, stirring rod; 309, cleaning tube; 310, stirring head; 311, third connecting tube; 312, first drive motor; 313, first gear; 314, second gear; 315, third gear; 316, second drive motor; 317, fourth gear; 318, fifth gear; 319, third drive motor; 320, sixth gear; 321, seventh gear; 32 2. water storage chamber; 323. contraction section; 324. first water outlet; 325. second water outlet; 326. limit strip; 327. connection groove; 328. limit groove; 329. connection protrusion; 330. piston cover plate; 331. first sealing ring; 332. second sealing ring; 333. liquid storage tank; 334. second water pump; 335. reversing valve; 401. injection tube; 402. fourth connecting tube; 403. second one-way valve; 404. liquid storage tank; 405. fifth connecting tube; 406. third one-way valve; 407. second lifting drive cylinder; 408. second pump Plug rod; 409, mounting cover; 410, fourth drive motor; 411, first pulley; 412, second pulley; 413, transmission belt; 414, second piston head; 415, third sealing ring; 501, detection tube; 502, sixth connecting tube; 503, fourth one-way valve; 504, cleaning cylinder; 505, cleaning tube; 506, seventh connecting tube; 507, waste liquid collection box; 508, threaded rod; 509, fifth drive motor; 510, second guide rod; 511, mounting block; 512, detection cylinder; 513, detection head; 514, dust cover. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] Please refer to Figure 1-16 A device for sampling and detecting waste oil comprises a working box 100, wherein the working box 100 comprises a box body 101, a top plate 107 is arranged on the top of the box body 101, a mounting horizontal plate 105 is fixed to the middle part of the inner side of the box body 101, a mounting vertical plate 106 is arranged on one side of the top plate 107, a sampling part 200 is arranged on the inner side of the box body 101 and at the bottom of the mounting horizontal plate 105, and is used for sampling waste oil of different depths; a stirring part 300 is arranged between the mounting horizontal plate 105 and the top plate 107, and is used for quantitatively sampling, stirring and mixing waste oil, and cleaning the stirring part 300 after sampling; an auxiliary material adding part 400 is arranged on one side of the stirring part 300, and is used for quantitatively adding auxiliary reagents; the mounting vertical plate 106 ... quantitatively sampling waste oil; a stirring part 300 is arranged between the mounting horizontal plate 105 and the top plate 107, and is used for quantitatively sampling waste oil, stirring and mixing waste oil, and cleaning the stirring part 300 after sampling; a stirring part 300 is arranged on one side of the stirring part 300, and is used for quantitatively adding auxiliary reagents; a stirring part 4 06 A detection unit 500 is installed on one side for detecting the waste oil. Specifically, the detection steps of the present invention are: first, the bottom layer waste oil is pre-sampled by the sampling unit 200, and then the pre-sampled waste oil is quantitatively sampled by the stirring unit 300, and then quantitative plasma water is added to the inner side of the stirring unit 300 by the auxiliary material adding unit 400, and then the waste oil added with the plasma water is stirred and mixed evenly, and the stirring is allowed to stand after the stirring is completed, and then the lower layer waste oil after the standing is transported to the inner side of the detection tube 501 by the stirring unit 300, and then the waste oil inside the detection tube 501 is detected by the detection unit 500, and after the detection is completed, the detection head 513 is cleaned; It should be noted that moving wheels 102 are installed at the four end corners of the bottom of the box 101 so that the detection device can be moved at any time to improve adaptability. On the other hand, a push-pull handle 103 is provided at the top of one end of the box 101 to facilitate the staff to push and pull the detection device. An observation door 104 is provided at the bottom of one side of the box 101.

[0025] Please refer to Figure 1-5The sampling part 200 includes a sampling cylinder 201 installed on the top of the mounting cross plate 105. The output end of the sampling cylinder 201 passes through the mounting cross plate 105 and is fixed with a moving wheel 102. The first guide rod 203 is slidably connected to the inner side of the end corner of the moving wheel 102. The first guide rod 203 is fixedly connected to the mounting cross plate 105 and the box body 101. A first water pump 204 is installed on the top of the sampling mounting plate 202. The input end of the first water pump 204 is connected to a sampling tube 205. The sampling tube 205 passes through the bottom of the box body 101. The output end of the first water pump 204 is connected to a first connecting tube 206. The end of the first connecting tube 206 away from the first water pump 204 is connected to a sample storage box 207. The sample storage box 207 is installed on the top of the sampling mounting plate 202. The top of the sample storage box 207 is connected with a second connecting pipe 208, and the second connecting pipe 208 is connected with a first non-return valve 209. The outer bottom of the sampling tube 205 is provided with a plurality of filter holes 210. The specific pre-sampling process is that when it is necessary to pre-sample the waste oil, the staff first pushes the detection device to the location of the waste oil, and then starts the sampling cylinder 201, so that the sampling cylinder 201 drives the sampling mounting plate 202 to descend as a whole, and then drives the sampling tube 205 to descend. When the sampling tube 205 drops to an appropriate height, the filter hole 210 is located at the lower layer of waste oil. Then the first water pump 204 is started, and the waste oil of the lower layer is transported to the inner side of the first connecting pipe 206 through the filter hole 210 and transported to the sample storage box 207 for pre-collection. It should be noted that, since waste cooking oil is often placed in a poor environment, it may contain large impurities and foreign objects, and the filter holes 210 can effectively filter out the large impurities. The second connecting tube 208 is made of a rubber hose to provide a movable space for the sample storage box 207 to descend and prevent it from affecting the lifting and lowering movement of the sample storage box 207.

[0026] Please refer to Figure 6-15The stirring part 300 includes a stirring tube 301 installed on the top of the installation horizontal plate 105, the second connecting tube 208 is connected to the bottom of the outer periphery of the stirring tube 301, a first supporting plate 302 is fixed to the inner side of the stirring tube 301, a second supporting plate 303 is fixed to the inner side of the stirring tube 301 and located above the first supporting plate 302, a first lifting drive cylinder 305 is rotatably connected between the second supporting plate 303 and the first supporting plate 302, a first piston rod 306 is threadedly connected to the inner side of the first lifting drive cylinder 305, and the first piston rod 306 is threadedly connected to the inner side of the first lifting drive cylinder 305. The bottom of the rod 306 is detachably connected to the first piston head 307, and the top of the outer periphery of the first piston head 307 is provided with a plurality of connecting protrusions 329. The inner wall of the stirring tube 301 is provided with a plurality of limiting grooves 328 adapted to the connecting protrusions 329. The first piston head 307 is slidably connected to the stirring tube 301 through the cooperation of the connecting protrusions 329 and the corresponding limiting grooves 328. A third drive motor 319 is installed at the bottom of the second support plate 303 and on one side of the first lifting drive cylinder 305. The output of the third drive motor 319 The end of the stirring tube 301 passes through the second supporting piece 303 and is fixed with a sixth gear 320. The top of the first lifting drive cylinder 305 passes through the second supporting piece 303 and is fixed with a seventh gear 321 on its outer side. The seventh gear 321 is meshed and connected with the sixth gear 320. Specifically, a scale line is provided on the outer wall of the stirring tube 301 to facilitate accurate quantitative sampling. When it is necessary to quantitatively sample the waste oil, the third driving motor 319 is started to drive the sixth gear 320 to rotate, thereby driving the seventh gear 321 to rotate, and then driving the first The lifting drive cylinder 305 rotates. Due to the cooperation between the limiting groove 328 and the connecting protrusion 329, the stirring tube 301 has a limiting effect on the circumferential rotation of the first piston head 307. Therefore, when the first lifting drive cylinder 305 rotates, the first piston rod 306 will perform a lifting movement, thereby driving the first piston head 307 to perform a lifting movement. Through the lifting movement of the first piston head 307, the waste oil inside the sample storage box 207 can be sucked into the inner side of the stirring tube 301 through the second connecting tube 208, thereby completing quantitative sampling; It should be noted that the first one-way valve 209 is a one-way valve. In one embodiment, the liquid can only flow along the second connecting tube 208 to the stirring tube 301 and cannot move in the opposite direction. In another embodiment, the first one-way valve 209 can be used in conjunction with the electromagnetic reversing valve to be set as a two-way one-way valve. When necessary, the liquid inside the stirring tube 301 can also flow to the sample storage box 207.

[0027] Please refer to Figure 6-15At least one second sealing ring 332 is sleeved on the outer periphery of the first piston head 307, which is used to seal the first piston head 307 and the inner wall of the stirring tube 301. The top of the first piston head 307 is fixedly connected to the piston cover plate 330 by screws. A first sealing ring 331 is provided between the connecting protrusion 329 and the piston cover plate 330, which is used to seal the connecting protrusion 329 and the inner wall of the limiting groove 328. Specifically, the first piston head 307 and the inner wall of the stirring tube 301 are sealed by the second sealing ring 332, and the first piston head 307 and the inner wall of the limiting groove 328 are sealed by the first sealing ring 331 to prevent liquid leakage through the limiting groove 328 when the first piston head 307 moves.

[0028] Please refer to Figure 6-15 , a third support sheet 304 is fixed on the inner side of the stirring tube 301 and located above the second support sheet 303, a stirring rod 308 is rotatably connected to the inner side of the third support sheet 304, the stirring rod 308 is inserted into the inner side of the first piston rod 306 and is rotatably connected thereto, the bottom of the stirring rod 308 runs through the first piston head 307 and is fixed with a stirring head 310, the top of the stirring head 310 runs through the third support sheet 304 and a fifth gear 318 is fixed on its outer side, a second drive motor 316 is installed at the bottom of the third support sheet 304, the output end of the second drive motor 316 runs through the fourth gear 317, the fourth gear 317 is meshed and connected with the fifth gear 318, when it is necessary to stir and mix the waste oil inside the stirring tube 301, start the second drive motor 316, so that it drives the fourth gear 317 to rotate, and then drives the fifth gear 318 to rotate, further drives the stirring rod 308 to rotate, and when the stirring rod 308 rotates, it drives the stirring head 310 to rotate, thereby stirring and mixing the waste oil inside the stirring tube 301; It should be noted that the stirring head 310 is configured as a spiral ascending blade, which can bring the waste oil in the lower layer to the upper layer for circulation mixing and stirring during stirring, so as to facilitate more uniform mixing of the waste oil.

[0029] Please refer to Figure 6-15A cleaning tube 309 is inserted into the inner side of the stirring rod 308, and the cleaning tube 309 is threadedly connected to the top of the stirring tube 301. A first driving motor 312 is installed on the top of the stirring tube 301. The output end of the first driving motor 312 passes through the stirring tube 301 and is fixed with a first gear 313. The first gear 313 is meshed and connected with a second gear 314 on the side close to the cleaning tube 309. The second gear 314 is rotatably connected to the stirring tube 301. The second gear 314 is meshed and connected with a third gear 315 on the side close to the cleaning tube 309. The third gear 315 is rotatably connected to the stirring tube 301. The third gear 315 is sleeved on the outer side of the cleaning tube 309. A plurality of limit strips 326 are provided on the inner side of the third gear 315. A plurality of connecting grooves 327 adapted to the limit strips 326 are provided on the outer periphery of the top of the tube 309, and the third gear 315 is connected to the cleaning tube 309 through the cooperation between the limit strips 326 and the connecting grooves 327; a third connecting tube 311 is connected to the top of the cleaning tube 309, a liquid storage tank 333 is provided on the mounting cross plate 105, a second water pump 334 is installed on the top of the liquid storage tank 333, and the input end of the second water pump 334 extends into the bottom of the inner side of the liquid storage tank 333, a reversing valve 335 is installed on the top of the top plate 107, and the input end of the reversing valve 335 is connected to the output end of the second water pump 334, and the end of the third connecting tube 311 away from the cleaning tube 309 is connected to one of the output ends of the reversing valve 335; the outer periphery of the stirring head 310 A plurality of second water outlet holes 325 are provided, and a plurality of first water outlet holes 324 corresponding to the second water outlet holes 325 are provided on the cleaning tube 309 at the same horizontal position as the second water outlet holes 325. When the vertical positions of the first water outlet holes 324 and the second water outlet holes 325 coincide, that is, the first water outlet holes 324 and the second water outlet holes 325 are at the same horizontal position, the cleaning liquid inside the cleaning tube 309 can be sprayed out through the first water outlet holes 324 and the second water outlet holes 325, so as to clean the inner wall of the stirring tube 301. When stirring is performed, the horizontal positions of the first water outlet holes 324 and the second water outlet holes 325 need to be staggered. The specific operation is that when cleaning is not required, the first drive motor 31 2 starts to drive the first gear 313 to rotate, and then drives the second gear 314, the third gear 315 and the cleaning tube 309 to rotate in sequence. In this process, due to the setting of the limiting strip 326 and the connecting groove 327, when the third gear 315 rotates, the cleaning tube 309 can be driven to rotate, and the third gear 315 can slide relative to the cleaning tube 309 in the vertical direction. Therefore, when the cleaning tube 309 rotates, due to the rotational connection between the cleaning tube 309 and the stirring tube 301, the cleaning tube 309 can be lifted and lowered at the same time, so that the positions of the first water outlet 324 and the second water outlet 325 are staggered, so that when the stirring head 310 rotates, the cleaning liquid cannot flow out from the second water outlet 325;When cleaning is required, the second water pump 334 is started to pump out the cleaning liquid in the liquid storage tank 333 and transport it to the inside of the third connecting pipe 311, and then enter the inside of the stirring rod 308, and then the first driving motor 312 is started to make the first water outlet 324 and the second water outlet 325 at the same horizontal position, and the second driving motor 316 is started to drive the stirring head 310 to rotate. When the stirring head 310 rotates, the cleaning liquid can be sprayed from the position of the second water outlet 325, so as to clean the inner wall of the stirring tube 301. ;

[0030] In another preferred embodiment, please refer to Figure 6-15 A contraction section 323 is provided on the cleaning tube 309 at the same horizontal position as the second water outlet hole 325, and a first water outlet hole 324 is opened on the outer periphery of the contraction section 323. A water storage chamber 322 is provided on the inner side of the stirring head 310 at the same horizontal position as the contraction section 323. Through the arrangement of the water storage chamber 322 and the contraction section 323, a small water storage tank is formed between the water storage chamber 322 and the contraction section 323, so that when the stirring head 310 rotates, the water flow sprayed through the second water outlet hole 325 is larger and more continuous, thereby better cleaning the inner wall of the stirring tube 301.

[0031] Please refer to Figure 6-15The auxiliary material adding part 400 includes an injection tube 401 installed on the top plate 107 and located on one side of the stirring tube 301. The bottom of the injection tube 401 is connected to a fourth connecting tube 402, which is connected to the middle of the injection tube 401. The fourth connecting tube 402 is connected to a second one-way valve 403; the top of the fourth connecting tube 402 is detachably connected to a mounting cover plate 409, the inner side of the mounting cover plate 409 is rotatably connected to a second lifting drive cylinder 407, the inner side of the second lifting drive cylinder 407 is threadedly connected to a second piston rod 408, the bottom of the second piston rod 408 is fixedly connected to a second piston head 414, and the second piston head 414 is connected to the injection tube 401. The fourth drive motor 410 is installed on the top of the mounting cover 409, the output end of the fourth drive motor 410 passes through the mounting cover 409 and is fixed with a first pulley 411, a second pulley 412 is fixed on the outer bottom of the second lifting drive cylinder 407, the second pulley 412 is rotatably connected to the injection tube 401, a transmission belt 413 is connected to the outer side of the first pulley 411 and the second pulley 412, at least one third sealing ring 415 is sleeved on the outer side of the second piston head 414, which is used to seal between the inner wall of the injection tube 401 and the second piston head 414, a sliding connection groove is opened on the outer periphery of the second piston rod 408, and the injection tube A sliding connection strip adapted to the sliding connection groove is provided on the inner side of the top of 401, and the second piston rod 408 is connected to the injection tube 401 through the cooperation of the sliding connection groove and the sliding connection strip. A liquid storage tank 404 is provided on the top plate 107, and a fifth connecting pipe 405 is connected to the bottom output end of the liquid storage tank 404, and a third one-way valve 406 is connected to the fifth connecting pipe 405. One end of the fifth connecting pipe 405 is connected to the middle of the injection tube 401 and is located below the second piston head 414. Specifically, when it is necessary to add plasma water to the inner side of the stirring tube 301, the fourth driving motor 410 is started to drive the first pulley 411 to rotate, and then the second pulley 4 12 and the transmission belt 413 drive the second lifting drive cylinder 407 to rotate. Due to the setting of the sliding connection groove and the sliding connection strip, the second piston rod 408 cannot rotate and can only perform lifting movement. Therefore, when the second lifting drive cylinder 407 rotates, the second piston rod 408 will perform lifting movement. When the second piston head 414 descends, the plasma liquid at its bottom can be quantitatively injected into the stirring tube 301. It should be noted that the second one-way valve 403 is set so that the liquid flow inside the fourth connecting pipe 402 can only move in the direction toward the stirring tube 301, but cannot move in the opposite direction, so as to prevent the waste oil from flowing back along the fourth connecting pipe 402; On the other hand, the liquid storage tank 404 serves as a storage tool for plasma liquid. When the second piston head 414 rises, suction is generated, and the plasma liquid inside the liquid storage tank 404 is sucked into the injection tube 401 for replenishment through the suction, thereby achieving the effect of automatically replenishing the plasma liquid.

[0032] Please refer to Fig.16The detection unit 500 includes a detection tube 501 detachably mounted on the mounting horizontal plate 105 and located on one side of the stirring tube 301. The stirring tube 301 is connected to a sixth connecting tube 502 at the bottom near the detection tube 501. The sixth connecting tube 502 is connected to a fourth one-way valve 503. One end of the sixth connecting tube 502 is detachably connected to the top of the outer periphery of the detection tube 501. A threaded rod 508 is provided at the top of the mounting vertical plate 106 near the detection tube 501. The threaded rod 508 is rotatably connected to the box body 101. The outer side of the threaded rod 508 is threadedly connected with a mounting block 511, a fifth drive motor 509 is installed on one side of the box body 101, the output end of the fifth drive motor 509 is fixedly connected to the threaded rod 508, the inner side of the mounting block 511 and above and below the threaded rod 508 are slidably connected with a second guide rod 510, the second guide rod 510 is fixedly connected to the box body 101, and a detection cylinder 512 is installed on the second guide rod 510, and the output end of the detection cylinder 512 passes through the mounting block 511 and A detection head 513 is fixed, and a dust cover 514 is fixed on one side of the mounting block 511 away from the liquid storage tank 333. The dust cover 514 is located above the opening of the detection tube 501. Specifically, after the stirring is completed, it is left to stand for a suitable time, and then the third drive motor 319 is started to drive the first piston head 307 to move downward, so that the lower layer of waste oil inside the stirring tube 301 is pressed into the inner side of the sixth connecting tube 502, and enters the inner side of the detection tube 501 through the sixth connecting tube 502 to be detected. In this process, the fourth one-way valve 503 is set so that the liquid flow inside the sixth connecting tube 502 can only flow along the sixth connecting tube 502 to the inner side of the detection tube 501, and then the fifth drive motor 509 is started to drive the threaded rod 508 to rotate, thereby driving the detection cylinder 512 to perform displacement movement, so that it moves to the detection head 513 is located directly above the detection tube 501, and then the detection cylinder 512 is started to drive the detection head 513 to move downward and extend into the waste oil inside the detection tube 501 for detection.

[0033] Please refer to Fig.16A cleaning cylinder 504 is installed on the inner side of the installation horizontal plate 105 and on the side of the detection tube 501 away from the dust cover plate 514. A waste liquid collection box 507 is provided on the inner side of the box body 101 and below the cleaning cylinder 504. A plurality of cleaning tubes 505 are provided on the outer periphery of the cleaning cylinder 504. A plurality of cleaning heads are provided on the cleaning tubes 505. The cleaning heads extend into the inner side of the cleaning cylinder 504. The tops of the plurality of cleaning tubes 505 penetrate the installation horizontal plate 105 and are connected with a seventh connecting tube 506. One end of the seventh connecting tube 506 is connected to one of the output ends of the reversing valve 335. Specifically, the detection After completion, the detection cylinder 512 starts again to drive the detection head 513 to rise and separate from the detection tube 501, and then the fifth drive motor 509 starts again to drive the detection cylinder 512 to move toward the direction of the cleaning cylinder 504 and move to the top of the cleaning cylinder 504, and then the detection cylinder 512 starts to make the detection head 513 extend into the inside of the cleaning cylinder 504, and then the second water pump 334 starts to transport the cleaning liquid inside the liquid storage tank 333 to the inside of the seventh connecting tube 506 and enter the inside of the cleaning tube 505, and then spray it out through the washing head, thereby cleaning the detection head 513.

[0034] The use process of the waste oil sampling and detection device provided by the present invention is as follows: When using the local gutter oil sampling detection device, the staff first pushes the detection device to the location of the gutter oil, then starts the sampling cylinder 201, so that the sampling cylinder 201 drives the sampling mounting plate 202 to descend as a whole, and then drives the sampling tube 205 to descend. When the sampling tube 205 descends to an appropriate height, the filter hole 210 is located at the lower layer of gutter oil, and then the first water pump 204 is started, and the lower layer of gutter oil is transported to the inner side of the first connecting pipe 206 through the filter hole 210 and transported to the sample storage box 207 for pre-collection; When it is necessary to quantitatively sample the waste oil, the third driving motor 319 starts to drive the sixth gear 320 to rotate, and then drives the seventh gear 321 to rotate, and then drives the first lifting driving cylinder 305 to rotate. At this time, the first piston rod 306 will perform a lifting movement, and then drive the first piston head 307 to perform a lifting movement. The lifting movement of the first piston head 307 can suck the waste oil inside the sample storage box 207 into the inner side of the stirring tube 301 through the second connecting pipe 208, thereby completing the quantitative sampling; When the waste oil in the stirring tube 301 needs to be stirred and mixed, the second driving motor 316 is started to drive the fourth gear 317 to rotate, thereby driving the fifth gear 318 to rotate, and further driving the stirring rod 308 to rotate. When the stirring rod 308 rotates, the stirring head 310 is driven to rotate, thereby stirring and mixing the waste oil in the stirring tube 301; When cleaning is not required, the first drive motor 312 is started to drive the first gear 313 to rotate, and then the second gear 314, the third gear 315 and the cleaning tube 309 are rotated in turn, so that the cleaning tube 309 can be lifted and lowered at the same time, so that the positions of the first water outlet 324 and the second water outlet 325 are staggered, so that when the stirring head 310 rotates, the cleaning liquid cannot flow out from the second water outlet 325; when cleaning is required, the second water pump 334 is started to extract the cleaning liquid inside the liquid storage tank 333 and transport it to the inside of the third connecting tube 311, and then enter the inside of the cleaning tube 309, and then the first drive motor 312 is started to make the first water outlet 324 and the second water outlet 325 located at the same horizontal position, and the second drive motor 316 is started to drive the stirring head 310 to rotate. When the stirring head 310 rotates, the cleaning liquid can be sprayed from the position of the second water outlet 325, so as to clean the inner wall of the stirring tube 301; When it is necessary to add plasma water to the inner side of the stirring tube 301, the fourth driving motor 410 is started to drive the first pulley 411 to rotate, and then the second lifting driving cylinder 407 is driven to rotate through the second pulley 412 and the transmission belt 413. At this time, the second piston rod 408 will perform a lifting movement. When the second piston head 414 descends, the plasma liquid at its bottom can be quantitatively injected into the stirring tube 301. When the second piston head 414 rises, suction is generated, and the plasma liquid in the liquid storage tank 404 is sucked into the injection tube 401 for replenishment, thereby achieving the effect of automatically replenishing the plasma liquid; After the stirring is completed, the mixture is allowed to stand for a suitable period of time, and then the third driving motor 319 is started to drive the first piston head 307 to move downward, so that the lower layer of the waste oil inside the stirring tube 301 is pressed into the inner side of the sixth connecting tube 502, and enters the inner side of the detection tube 501 through the sixth connecting tube 502 to be detected, and then the fifth driving motor 509 is started to drive the threaded rod 508 to rotate, thereby driving the detection cylinder 512 to perform displacement movement, so that the detection head 513 is moved to be located directly above the detection tube 501, and then the detection cylinder 512 is started to drive the detection head 513 to move downward and extend into the waste oil inside the detection tube 501 for detection; After the detection is completed, the detection cylinder 512 starts again to drive the detection head 513 to rise and separate from the detection tube 501, and then the fifth drive motor 509 starts again to drive the detection cylinder 512 to move toward the direction of the cleaning cylinder 504 and move to the top of the cleaning cylinder 504, and then the detection cylinder 512 starts to make the detection head 513 extend into the inside of the cleaning cylinder 504, and then the second water pump 334 starts to transport the cleaning liquid inside the liquid storage tank 333 to the inside of the seventh connecting tube 506 and enter the inside of the cleaning tube 505, and then spray it out through the washing head, thereby cleaning the detection head 513.

[0035] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A waste oil sampling and detection device, characterized in that: The working box (100) comprises a box body (101), a top plate (107) is provided on the top of the box body (101), a mounting horizontal plate (105) is fixed to the middle of the inner side of the box body (101), a mounting vertical plate (106) is provided on one side of the top plate (107), a sampling portion (200) is installed on the inner side of the box body (101) and at the bottom of the mounting horizontal plate (105), and is used to sample waste oil of different depths; a stirring portion (300) is installed between the mounting horizontal plate (105) and the top plate (107), and is used to quantitatively sample waste oil, stir and mix it, and clean the stirring portion (300) after sampling; an auxiliary material adding portion (400) is provided on one side of the stirring portion (300), and is used to quantitatively add auxiliary reagents; and a detection portion (500) is installed on one side of the mounting vertical plate (106), and is used to detect waste oil.

2. A waste cooking oil sampling and detection device according to claim 1, characterized in that: The sampling portion (200) comprises a sampling cylinder (201) mounted on the top of the mounting horizontal plate (105); the output end of the sampling cylinder (201) passes through the mounting horizontal plate (105) and is fixed with a moving wheel (102); a first guide rod (203) is slidably connected to the inner side of the end corner of the moving wheel (102); the first guide rod (203) is fixedly connected to the mounting horizontal plate (105) and the box (101); a first water pump (204) is mounted on the top of the sampling mounting plate (202); the input end of the first water pump (204) is connected to a sampling tube (20 5), the sampling tube (205) passes through the bottom of the box body (101), the output end of the first water pump (204) is connected to the first connecting tube (206), the end of the first connecting tube (206) away from the first water pump (204) is connected to a sample storage box (207), the sample storage box (207) is installed on the top of the sampling installation plate (202), the top of the sample storage box (207) is connected to a second connecting tube (208), the second connecting tube (208) is connected to a first one-way valve (209), and a plurality of filter holes (210) are opened at the bottom of the outer periphery of the sampling tube (205).

3. A waste cooking oil sampling and detection device according to claim 2, characterized in that: The stirring portion (300) comprises a stirring tube (301) mounted on the top of the mounting horizontal plate (105); the second connecting tube (208) is connected to the bottom of the outer periphery of the stirring tube (301); a first supporting plate (302) is fixed to the inner side of the stirring tube (301); a second supporting plate (303) is fixed to the inner side of the stirring tube (301) and located above the first supporting plate (302); a first lifting drive cylinder (305) is rotatably connected between the second supporting plate (303) and the first supporting plate (302); a first piston rod (306) is threadedly connected to the inner side of the first lifting drive cylinder (305); a first piston head (307) is detachably connected to the bottom of the first piston rod (306); a plurality of connecting protrusions (320) are provided on the top of the outer periphery of the first piston head (307). 9), a plurality of limiting grooves (328) matched with the connecting protrusions (329) are formed on the inner wall of the stirring tube (301); the first piston head (307) is slidably connected to the stirring tube (301) through the cooperation between the connecting protrusions (329) and the corresponding limiting grooves (328); a third driving motor (319) is installed at the bottom of the second supporting plate (303) and at one side of the first lifting driving cylinder (305); an output end of the third driving motor (319) passes through the second supporting plate (303) and is fixed with a sixth gear (320); a top of the first lifting driving cylinder (305) passes through the second supporting plate (303) and is fixed with a seventh gear (321) on its outer side; the seventh gear (321) is meshingly connected with the sixth gear (320).

4. A waste cooking oil sampling and detection device according to claim 3, characterized in that: At least one second sealing ring (332) is sleeved on the outer periphery of the first piston head (307) for sealing the first piston head (307) and the inner wall of the stirring tube (301); a piston cover plate (330) is fixedly connected to the top of the first piston head (307) by screws; a first sealing ring (331) is provided between the connecting protrusion (329) and the piston cover plate (330) for sealing between the connecting protrusion (329) and the inner wall of the limiting groove (328).

5. A waste cooking oil sampling and detection device according to claim 4, characterized in that: A third support plate (304) is fixed inside the stirring tube (301) and above the second support plate (303); a stirring rod (308) is rotatably connected inside the third support plate (304); the stirring rod (308) is inserted inside the first piston rod (306) and is rotatably connected thereto; the bottom of the stirring rod (308) passes through the first piston head (307) and is fixed with a stirring head (310); the top of the stirring head (310) passes through the third support plate (304) and is fixed with a fifth gear (318) on its outside; a second drive motor (316) is installed at the bottom of the third support plate (304); the output end of the second drive motor (316) passes through the fourth gear (317); the fourth gear (317) is meshingly connected with the fifth gear (318).

6. A waste cooking oil sampling and detection device according to claim 5, characterized in that: A cleaning tube (309) is inserted into the inner side of the stirring rod (308), and the cleaning tube (309) is threadedly connected to the top of the stirring tube (301). A first driving motor (312) is installed on the top of the stirring tube (301). The output end of the first driving motor (312) passes through the stirring tube (301) and is fixed with a first gear (313). The first gear (313) is meshedly connected to a second gear (314) on a side close to the cleaning tube (309). The second gear (314) is meshed with the stirring tube (301). The second gear (314) is rotatably connected to the stirring tube (301); a third gear (315) is meshedly connected to the side of the second gear (314) close to the cleaning tube (309); the third gear (315) is rotatably connected to the stirring tube (301); the third gear (315) is sleeved on the outside of the cleaning tube (309); a plurality of limit strips (326) are provided on the inside of the third gear (315); a plurality of connection grooves (327) adapted to the limit strips (326) are provided on the outer periphery of the top of the cleaning tube (309); The third gear (315) is connected to the cleaning pipe (309) through the cooperation of the limiting strip (326) and the connecting groove (327); the top of the cleaning pipe (309) is connected to a third connecting pipe (311); a liquid storage tank (333) is provided on the mounting transverse plate (105); a second water pump (334) is installed on the top of the liquid storage tank (333); an input end of the second water pump (334) extends into the bottom of the inner side of the liquid storage tank (333); a reversing valve (335) is installed on the top of the top plate (107). ), the input end of the reversing valve (335) is connected to the output end of the second water pump (334), and the end of the third connecting pipe (311) away from the cleaning pipe (309) is connected to one of the output ends of the reversing valve (335); a plurality of second water outlet holes (325) are provided on the outer periphery of the stirring head (310), and a plurality of first water outlet holes (324) corresponding to the second water outlet holes (325) are provided on the cleaning pipe (309) at the same horizontal position as the second water outlet holes (325).

7. A waste cooking oil sampling and detection device according to claim 6, characterized in that: A contraction section (323) is provided on the cleaning pipe (309) at the same horizontal position as the second water outlet hole (325); the first water outlet hole (324) is provided on the outer periphery of the contraction section (323); and a water storage chamber (322) is provided on the inner side of the stirring head (310) at the same horizontal position as the contraction section (323).

8. The waste cooking oil sampling and detection device according to claim 7, characterized in that: The auxiliary material adding part (400) comprises an injection tube (401) installed on the top plate (107) and located on one side of the stirring tube (301); the bottom of the injection tube (401) is connected to a fourth connecting tube (402); the fourth connecting tube (402) is connected to the middle of the injection tube (401); the fourth connecting tube (402) is connected to a second one-way valve (403); the top of the fourth connecting tube (402) is detachably connected to a mounting cover plate (409); the inner side of the mounting cover plate (409) is rotatably connected to a second lifting drive The second lifting drive cylinder (407) is threadedly connected to a second piston rod (408) on the inner side thereof, a second piston head (414) is fixedly connected to the bottom of the second piston rod (408), the second piston head (414) is slidably connected to the injection tube (401), a fourth driving motor (410) is installed on the top of the mounting cover plate (409), an output end of the fourth driving motor (410) passes through the mounting cover plate (409) and is fixed with a first pulley (411), and the outer bottom of the second lifting drive cylinder (407) is A second pulley (412) is fixed thereto, the second pulley (412) being rotatably connected to the injection tube (401), a transmission belt (413) being connected to the outer sides of the first pulley (411) and the second pulley (412), at least one third sealing ring (415) being sleeved on the outer side of the second piston head (414) for sealing between the inner wall of the injection tube (401) and the second piston head (414), a sliding connection groove being provided on the outer periphery of the second piston rod (408), a sealing ring for sealing the inner wall of the injection tube (401) and the inner side of the top of the injection tube (401) The sliding connection groove is matched with a sliding connection strip, the second piston rod (408) is connected to the injection tube (401) through the cooperation between the sliding connection groove and the sliding connection strip, the top plate (107) is provided with a liquid storage tank (404), the bottom output end of the liquid storage tank (404) is connected to a fifth connecting tube (405), the fifth connecting tube (405) is connected to a third one-way valve (406), and one end of the fifth connecting tube (405) is connected to the middle of the injection tube (401) and is located below the second piston head (414).

9. The waste cooking oil sampling and detection device according to claim 8, characterized in that: The detection portion (500) comprises a detection tube (501) which is detachably mounted on the mounting horizontal plate (105) and is located on one side of the stirring tube (301); a sixth connecting tube (502) is connected to the bottom of the stirring tube (301) close to the detection tube (501); a fourth non-return valve (503) is connected to the sixth connecting tube (502); one end of the sixth connecting tube (502) is detachably connected to the top of the outer periphery of the detection tube (501); a threaded rod (508) is provided at the top of the mounting vertical plate (106) close to the detection tube (501); the threaded rod (508) is rotatably connected to the box (101); the outer side of the threaded rod (508) is threadedly connected to a mounting block (511); and the box (101) is A fifth drive motor (509) is mounted on the side of the mounting block (511), the output end of the fifth drive motor (509) is fixedly connected to the threaded rod (508), a second guide rod (510) is slidably connected to the inner side of the mounting block (511) and located above and below the threaded rod (508), the second guide rod (510) is fixedly connected to the box body (101), a detection cylinder (512) is mounted on the second guide rod (510), the output end of the detection cylinder (512) passes through the mounting block (511) and is fixedly connected to a detection head (513), a dust cover plate (514) is fixedly located on the side of the mounting block (511) away from the liquid storage tank (333), and the dust cover plate (514) is located above the opening of the detection tube (501).

10. The device for sampling and detecting waste cooking oil according to claim 9, characterized in that: A cleaning cylinder (504) is installed on the inner side of the mounting horizontal plate (105) and located on the side of the detection tube (501) away from the dust cover (514); a waste liquid collection box (507) is provided on the inner side of the box body (101) and located below the cleaning cylinder (504); a plurality of cleaning tubes (505) are provided on the outer periphery of the cleaning cylinder (504); a plurality of cleaning heads are provided on the cleaning tubes (505), and the cleaning heads extend into the inner side of the cleaning cylinder (504); the tops of the plurality of cleaning tubes (505) pass through the mounting horizontal plate (105) and are connected to a seventh connecting tube (506); one end of the seventh connecting tube (506) is connected to one of the output ends of the reversing valve (335).

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