Detection equipment for plasticizer in fresh milk
By designing a raw milk testing device with a negative pressure cleaning and sealing structure, the problem of cross-contamination caused by the difficulty in cleaning the sampler was solved, achieving efficient cleaning and accurate testing of raw milk.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, raw milk samplers are difficult to clean thoroughly, leading to cross-contamination during the sampling process.
A device for detecting plasticizers in raw milk was designed, including a cylinder, a liquid absorption assembly, a collection tube, a sealing assembly, and a cleaning assembly. The device avoids raw milk residue and cross-contamination through negative pressure cleaning and sealing structure.
Effective cleaning of raw milk residue inside the sampler prevents cross-contamination and improves sampling quality and testing accuracy.
Smart Images
Figure CN121783610A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of raw milk testing technology, and in particular to a device for detecting plasticizers in raw milk. Background Technology
[0002] In existing technologies, before testing for plasticizers in raw milk, it is necessary to sample the raw milk in the factory and then send it into the testing equipment of the testing agency. During this process, due to the large production volume, it is necessary to sample the raw milk in the factory multiple times. The cleaning process of the sampler during multiple sampling is cumbersome and difficult. Simple cleaning of the sampler is not enough to clean it thoroughly, resulting in cross-contamination of the sampled raw milk, which affects the sampling of raw milk. Summary of the Invention
[0003] To overcome the drawback of cross-contamination of raw milk samples due to the difficulty in cleaning the sampler during multiple sampling processes, this invention provides a device for detecting plasticizers in raw milk.
[0004] The technical solution of the present invention is: a detection device for plasticizers in raw milk, comprising a cylinder; a first inner cavity is provided inside the cylinder; a second inner cavity is provided inside the cylinder; the second inner cavity is located below the first inner cavity; a stopper is connected to the cylinder; it also includes a liquid suction assembly, a collection tube, a sealing assembly, and a cleaning assembly; a liquid suction assembly for sucking raw milk into the cylinder is connected to the cylinder; a plurality of collection tubes for collecting the raw milk to be tested are connected to the liquid suction assembly; the plurality of collection tubes are arranged in a ring array; a sealing assembly for preventing raw milk from overflowing when the collection tubes collect raw milk is connected to the cylinder; and a cleaning assembly for preventing cross-contamination of raw milk is connected to the cylinder.
[0005] Preferably, the liquid suction assembly includes a push rod, a rubber sheet, a sleeve, a collar, an inlet pipe, and a squeezing rod; the push rod is slidably connected to the cylinder; a rubber sheet is fixedly attached to the lower side of the push rod; a sleeve is fixedly attached to the outer side of the cylinder; an inlet is provided on the right side of the sleeve; a collar is rotatably connected to the outer side of the sleeve; each collection pipe is connected to an inlet pipe on the side near the collar; several squeezing rods are fixedly attached to the other end of each inlet pipe; each inlet pipe is slidably connected to the collar; each inlet pipe can be detached from the collar; and each inlet pipe is connected to an adjacent inlet.
[0006] Preferably, the sealing assembly includes an elastic element, a sealing sheet, a first rubber barb, and a second rubber barb; a collection port is provided on the upper side of the cylinder; an elastic element is fixedly connected inside the collection port on the cylinder; a sealing sheet for preventing raw milk from overflowing from the collection port is fixedly connected to the other end of the elastic element; a plurality of first rubber barbs are fixedly connected to the collar; the plurality of first rubber barbs are arranged in a circular array; two adjacent first rubber barbs are arranged symmetrically from top to bottom; a plurality of second rubber barbs are fixedly connected to the side of each collection tube near the collar; each second rubber barb corresponds to the position of the adjacent first rubber barb.
[0007] Preferably, the cleaning assembly includes a water reservoir, a connecting pipe, locking pins, and third rubber barbs; the water reservoir is fixedly connected to the upper side of the cylinder; the water reservoir stores clean water; a micro pump is installed inside the water reservoir; the connecting pipe is connected to the lower side of the water reservoir; an electric valve is installed inside the connecting pipe; the other end of the connecting pipe passes through the upper side of the sleeve and is connected to the water inlet; several locking pins for moving the sealing plate to the left are slidably connected to the sleeve; several third rubber barbs are fixedly connected to each locking pin; several slots are opened on the collar; each slot corresponds to the position of the adjacent third rubber barb.
[0008] Preferably, the second inner cavity is narrowed from top to bottom.
[0009] Preferably, the diameter of the sealing plate is larger than the longitudinal section diameter of the inlet.
[0010] Preferably, it also includes a sealing sleeve; a number of sealing sleeves are fixedly attached to the collar to prevent raw milk from flowing out along the gap between the collection port and the inlet pipe; each sealing sleeve is slidably connected to the adjacent inlet pipe.
[0011] Preferably, it also includes sealing rings; each groove on the collar is fixedly fitted with a sealing ring to prevent water from overflowing; each sealing ring is slidably connected to an adjacent pin.
[0012] Preferably, it also includes a sponge and a stop; when the push rod is not used, a rubber sheet is fixedly attached to the lower side; a rubber sheet is rotatably connected to the lower side of the push rod; a sponge is fixedly attached to the upper side of the rubber sheet; a cleaning surface is provided on the upper side of the sponge; and a stop is fixedly attached to the left side of the second inner cavity of the cylinder.
[0013] Preferably, the sponge is initially shaped like an inverted frustum; the diameter of the cleaning surface is larger than the diameter of the rubber sheet.
[0014] The beneficial effects of the present invention are: the present invention achieves the negative pressure generated by the worker pulling the push rod upward to disrupt the adsorption balance of the raw milk adhering to the first inner cavity and the second inner cavity, reduce the adsorption of the raw milk, and make it easier for clean water to rinse the raw milk adhering to the first inner cavity and the second inner cavity, thereby improving the cleaning effect of the raw milk. By cleaning the inlet, collection outlet, first inner cavity, and second inner cavity, residual raw milk is prevented from remaining in these locations. This would prevent the residual raw milk from mixing with the raw milk sampled next time, thus contaminating the raw milk sampled next time and causing cross-contamination. This would improve the protection of the raw milk sampled next time. The inlet is sealed by a sealing strip, which blocks the inlet and prevents the raw milk in the first inner cavity from entering the liquid inlet tube after the collection tube has finished sampling the raw milk. This would result in a large amount of raw milk remaining in the liquid inlet tube, which would mold and deteriorate over time, affecting the sampling of raw milk by the collection tube, thereby improving the protection of the collection tube. By scraping the inner wall of the second inner cavity with the cleaning surface, the raw milk adhering to the second inner cavity is cleaned, thus avoiding the situation where raw milk remains on the first and second inner cavities after rinsing with water, thereby improving the cleaning effect of raw milk. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the detection device for plasticizers in raw milk according to the present invention; Figure 2 This is a cross-sectional view of the cylindrical body of the present invention; Figure 3 This is a three-dimensional structural diagram of the collection tube, sleeve, and collar assembly of the present invention. Figure 4 This is a front view of the collection tube, inlet tube, and sealing assembly of the present invention; Figure 5 This is a top view of the collection tube, collar, and locking pin assembly of the present invention; Figure 6 This is a front view of the combination of the locking pin, the third rubber barb, and the sealing ring of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the rubber sheet, sponge wiper, and stop block combination of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the push rod, rubber sheet and sponge wiper combination of the present invention.
[0016] Explanation of reference numerals in the attached drawings: 1-Cylinder body, 1001-First inner cavity, 1002-Second inner cavity, 1003-Collection port, 2-Collection pipe, 101-Push rod, 102-Rubber sheet, 103-Sleeve, 10301-Water inlet, 104-Ring, 10401-Gate, 105-Liquid inlet pipe, 106-Squeezing rod, 107-Sealing sleeve, 201-Elastic element, 202-Sealing sheet, 203-First rubber barb, 204-Second rubber barb, 301-Water reservoir, 302-Connecting pipe, 303-Pin, 304-Third rubber barb, 305-Sealing ring, 401-Sponge wipe, 40101-Cleaning surface, 402-Block. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Example
[0018] like Figures 1-6 As shown, a device for detecting plasticizers in raw milk includes a cylinder 1; a first inner cavity 1001 is provided inside the cylinder 1; a second inner cavity 1002 is provided inside the cylinder 1; the second inner cavity 1002 is located below the first inner cavity 1001; a stopper is connected to the lower side of the cylinder 1. It also includes a liquid suction assembly, a collection tube 2, a sealing assembly, and a cleaning assembly; the liquid suction assembly is connected to the cylinder 1; several collection tubes 2 are connected to the liquid suction assembly; the several collection tubes 2 are arranged in a ring array; the sealing assembly is connected to the cylinder 1; the cleaning assembly is connected to the cylinder 1.
[0019] The liquid suction assembly includes a push rod 101, a rubber sheet 102, a sleeve 103, a collar 104, a liquid inlet pipe 105, and a squeezing rod 106. The push rod 101 is slidably connected to the cylinder 1. The rubber sheet 102 is fixedly connected to the lower side of the push rod 101. The sleeve 103 is fixedly connected to the outer side of the cylinder 1. A water inlet 10301 is opened on the right side of the sleeve 103. The collar 104 is rotatably connected to the outer side of the sleeve 103. Each collection pipe 2 is connected to a liquid inlet pipe 105 on the side near the collar 104. Two symmetrically arranged squeezing rods 106 are fixedly connected to the other end of each liquid inlet pipe 105. Each liquid inlet pipe 105 is slidably connected to the collar 104. Each liquid inlet pipe 105 can be detached from the collar 104. Each liquid inlet pipe 105 is connected to the adjacent water inlet 10301.
[0020] The sealing assembly includes an elastic element 201, a sealing plate 202, a first rubber barb 203, and a second rubber barb 204; a collection port 1003 is provided on the upper right side of the cylinder 1; an elastic element 201, which is a spring, is fixedly connected inside the collection port 1003 on the cylinder 1; a sealing plate 202 is fixedly connected to the other end of the elastic element 201; a plurality of first rubber barbs 203 are fixedly connected to the collar 104; the plurality of first rubber barbs 203 are arranged in a ring array; two adjacent first rubber barbs 203 are arranged symmetrically from top to bottom; two symmetrically arranged second rubber barbs 204 are fixedly connected to the side of each collection tube 2 near the collar 104; each second rubber barb 204 corresponds to the position of the adjacent first rubber barb 203.
[0021] The cleaning assembly includes a water reservoir 301, a connecting pipe 302, a locking pin 303, and a third rubber barb 304. The water reservoir 301 is fixedly connected to the upper side of the cylinder 1. The water reservoir 301 stores clean water. A micro pump is installed inside the water reservoir 301. The connecting pipe 302 is connected to the lower right side of the water reservoir 301. An electric valve is installed inside the connecting pipe 302. The other end of the connecting pipe 302 passes through the upper side of the sleeve 103 and is connected to the water inlet 10301. Several locking pins 303 are slidably connected to the sleeve 103. Two vertically symmetrical third rubber barbs 304 are fixedly connected to each locking pin 303. Several slots 10401 are opened on the collar 104. Each slot 10401 corresponds to the position of the adjacent third rubber barb 304.
[0022] First, before the staff takes samples of the raw milk in the factory, they pull out the stopper at the bottom of the cylinder 1, then push the push rod 101 downwards, causing the rubber sheet 102 to move downwards to the connection between the first inner cavity 1001 and the second inner cavity 1002. Then, the staff holds the cylinder 1 with their left hand and the collection tube 2 with their right hand, pressing the collection tube 2 to the left, causing it to slide to the left. This moves the inlet pipe 105, the squeeze rod 106, and the second rubber hook 204 to the left. During this leftward movement, the squeeze rod 106 squeezes the sealing sheet 202, compressing the elastic element 201 and causing the sealing sheet 202 to move to the left. Due to the presence of the squeeze rod 106, the sealing sheet 202 cannot fit tightly against the inlet pipe 105, thus connecting the inlet pipe 105 to the collection port 1003. Simultaneously, during the leftward movement of the second rubber hook 204… During the process, the second rubber hook 204 will come into contact with the first rubber hook 203 and deform together after contact, so that the second rubber hook 204 passes over the first rubber hook 203. Then, the worker releases the collection tube 2 with his right hand, so that the elastic element 201 is reset, causing the sealing plate 202, the liquid inlet tube 105 and the squeezing rod 106 to move to the right, thereby driving the second rubber hook 204 and the collection tube 2 to move to the right. Since the second rubber hook 204 passes over the first rubber hook 203 in the above process, the second rubber hook 204 will be hooked by the first rubber hook 203 during the movement of the second rubber hook 204 to the right, so that the liquid inlet tube 105, the squeezing rod 106 and the collection tube 2 stop moving to the right, thereby fixing the collection tube 2, so that the liquid inlet tube 105 always remains connected to the collection port 1003 after the collection tube 2 is fixed.
[0023] Subsequently, the staff immersed the lower end of cylinder 1 into the raw milk in the sampling pool, and then pulled the push rod 101 upwards, causing the rubber sheet 102 to move upwards, creating a negative pressure in the first inner cavity 1001 and the second inner cavity 1002. This caused the raw milk to move upwards, and when it reached the collection port 1003, it flowed along the collection port 1003 to the inlet pipe 105, and then along the inlet pipe 105 to the collection tube 2, thus achieving the sampling of the raw milk. It should be noted that because there is a small amount of air between the lower side of the rubber sheet 102 and the raw milk, the raw milk will not come into contact with the rubber sheet 102, thus avoiding contamination of the rubber sheet 102 by the raw milk. After the collection tube 2 is filled with the raw milk required for sampling, the second rubber barb 204 is squeezed by the other hand, causing the first rubber barb 203 and the second rubber barb 204 to disengage from each other, causing the elastic element 201 to reset, thereby causing the sealing sheet 202 to reset. Then, the staff pulled the collection tube 2 to the... Figure 4 As shown in the diagram, the operator then pushes the push rod 101 downwards, causing the rubber sheet 102 to move downwards. This allows the raw milk in the first inner cavity 1001 and the second inner cavity 1002 to flow downwards into the sampling pool. The push rod 101 is then pulled upwards to reset the rubber sheet 102. It is important to note that during the downward flow of the raw milk from the first inner cavity 1001 and the second inner cavity 1002 into the sampling pool, the sealing sheet 202 remains in the position shown in the diagram. Figure 4 As shown, the inlet 10301 is sealed by the sealing plate 202, which blocks the inlet 10301 to prevent the raw milk in the first inner cavity 1001 from overflowing into the inlet 10301 along the collection port 1003 after the collection tube 2 has finished sampling the raw milk, and then entering the liquid inlet tube 105 along the inlet 10301. This would result in a large amount of raw milk remaining in the liquid inlet tube 105, which would mold and deteriorate over time, affecting the sampling of raw milk by the collection tube 2, thereby improving the protection effect of the collection tube 2.
[0024] Then, the staff moved the cylinder 1 to the outside of the sampling pool, and with one hand holding the collar 104, rotated the collar 104 clockwise, using a top-down view as a reference, to misalign the liquid inlet pipe 105 with the water inlet 10301, so that the locking pin 303 and the third rubber barb 304 rotated to the desired position. Figure 6As shown in the diagram, the operator then presses the locking pin 303 to the left, causing it to move to the left and press the sealing plate 202, compressing the elastic element 201 and causing the sealing plate 202 to move to the left. This connects the collection port 1003 and the water inlet 10301. Simultaneously, the third rubber barb 304, during its leftward movement, is pressed by the slot 10401, causing deformation. As the third rubber barb 304 continues to move to the left, it engages with the slot 10401, thus fixing the locking pin 303. This ensures that the collection port 1003 and the water inlet 10301 remain connected after the locking pin 303 is fixed. Then, the cylinder 1 is moved towards... Tilt to the left, push the plug back into the lower end of the cylinder 1, and open the electric valve in the connecting pipe 302. This allows the clean water in the water tank 301 to flow downwards along the connecting pipe 302 under the action of the micro pump, then into the collection port 1003 through the inlet 10301, and then into the first inner cavity 1001 from the collection port 1003. From the first inner cavity 1001, the water flows downwards to the second inner cavity 1002. At this point, the clean water will be blocked by the plug and cannot flow out of the cylinder 1, creating a sealed space between the cylinder 1, the first inner cavity 1001, and the second inner cavity 1002. The clean water is located within this sealed space. Then, the operator pulls the push rod 101 upwards, causing... The rubber sheet 102 moves upward, increasing the volume of the sealed space and creating negative pressure. This causes the water to rise, and simultaneously, the negative pressure disrupts the adsorption balance of the raw milk adhering to the first inner cavity 1001 and the second inner cavity 1002, reducing the adsorption of the raw milk. This makes it easier for the water to rinse the raw milk adhering to the first inner cavity 1001 and the second inner cavity 1002, thus improving the cleaning effect on the raw milk. Subsequently, the worker removes the stopper, allowing the mixture of raw milk and water to flow along the second inner cavity 1002 to the outside of the cylinder 1, thereby achieving the cleaning of the inlet 10301, the collection port 1003, the first inner cavity 1001, and the second inner cavity 1002. The cleaning of 002 prevents raw milk residue from remaining in the aforementioned locations, which could mix with the raw milk sampled next time, contaminating the next sample and causing cross-contamination. This improves the protection of the raw milk sampled next time. At the same time, the staff pushes the push rod 101 downward, causing the rubber sheet 102 to move downward, squeezing the air in the first inner cavity 1001 and the second inner cavity 1002. This causes the air in the first inner cavity 1001 and the second inner cavity 1002 to flow downward, thereby moving the clean water and the raw milk adhering to the first inner cavity 1001 and the second inner cavity 1002 downward, thus improving the cleaning effect of the raw milk.
[0025] Subsequently, after restoring the cylinder 1 to a vertical position, the staff held the collar 104 by hand and rotated the collar 104 clockwise from a top-down perspective. This rotated the other collection tube 2, which did not contain raw milk, to the position of the inlet 10301. Then, the staff repeated the above sampling operation to sample and clean the raw milk in the other sampling pool. This process was repeated to sample all the sampling pools in the factory. After sampling was completed, the cylinder 1 was sent into the testing chamber, and the liquid inlet tube 105 was pulled out from the collar 104. This allowed the raw milk in the collection tube 2 to be placed into the detector for testing, thereby detecting plasticizers in the raw milk.
[0026] The second inner cavity 1002 is designed with a narrow opening from top to bottom; as the rubber sheet 102 moves downward, causing the raw milk adhering to the first inner cavity 1001 and the second inner cavity 1002 to move downward, the airflow speed through the second inner cavity 1002 is increased, making it easier for the raw milk adhering to the second inner cavity 1002 to move downward under the action of airflow and water, thereby improving the cleaning effect on the raw milk adhering to the second inner cavity 1002.
[0027] The diameter of the sealing plate 202 is larger than the longitudinal section diameter of the water inlet 10301; so that the sealing plate 202 completely covers the water inlet 10301, preventing fresh milk from overflowing into the water inlet 10301, thereby improving the sealing effect of the sealing plate 202 on the water inlet 10301.
[0028] It also includes a sealing sleeve 107; several sealing sleeves 107 are fixedly attached to the collar 104; each sealing sleeve 107 is slidably connected to the adjacent liquid inlet pipe 105; during the sampling process of the cylinder 1, the sealing sleeve 107 seals the outside of the liquid inlet pipe 105 to prevent raw milk from flowing out of the collar 104 through the gap between the collection port 1003 and the liquid inlet pipe 105, causing the flowing raw milk to come into contact with the hands of the staff and fall back into the sampling pool, contaminating the raw milk in the sampling pool, thereby improving the protection effect of raw milk.
[0029] It also includes a sealing ring 305; a sealing ring 305 is fixedly connected in each slot 10401 on the collar 104; each sealing ring 305 is slidably connected to the adjacent locking pin 303; when clean water enters the inlet 10301 and the collection port 1003 along the connecting pipe 302, the sealing ring 305 prevents clean water from flowing out of the slot 10401 to the outside of the collar 104, thus avoiding waste of clean water and improving the cleaning effect of clean water on fresh milk. Example
[0030] Based on Example 1, such as Figure 7 and Figure 8As shown, it also includes a sponge wiper 401 and a stop block 402; without using the rubber sheet 102 fixedly connected to the lower side of the push rod 101 in Embodiment 1; the rubber sheet 102 is rotatably connected to the lower side of the push rod 101; the sponge wiper 401 is fixedly connected to the upper side of the rubber sheet 102; a cleaning surface 40101 is provided on the upper side of the sponge wiper 401; the stop block 402 is fixedly connected to the upper left side of the second inner cavity 1002 of the cylinder 1.
[0031] During the cleaning process of the raw milk adhering to the first inner cavity 1001 and the second inner cavity 1002, most of the residual raw milk flows out of the cylinder 1 with the water. At the same time, the worker pushes the push rod 101 downwards, thereby moving the rubber sheet 102 and the sponge 401 downwards. The sponge 401 then wipes the inner wall of the first inner cavity 1001, cleaning the residual raw milk after rinsing with water. Subsequently, as the rubber sheet 102 continues to move downwards, it is squeezed by the stop block 402, causing it to rotate clockwise from a front-to-back perspective. This causes the sponge 401 to rotate in the same way, deforming both the sponge 401 and the stop block 402. This allows the cleaning surface 40101 to contact the inner wall of the second inner cavity 1002 after the sponge 401 rotates. Then, with a top-down view as a reference, the operator manually rotates the push rod 101 clockwise, causing the rubber sheet 102 and the sponge 401 to rotate in the same way and push the push rod 101 downwards. This causes the rubber sheet 102 and the sponge 401 to deform and move downwards together, so that the cleaning surface 40101 scrapes against the inner wall of the second inner cavity 1002, thus cleaning the raw milk adhering to the second inner cavity 1002. This prevents the raw milk adhering to the first inner cavity 1001 and the second inner cavity 1002 from remaining on them after rinsing with water, thereby improving the cleaning effect of the raw milk.
[0032] Then, after cleaning the raw milk on the second inner cavity 1002, the staff pulls the push rod 101 to move the push rod 101 upward, thereby moving the rubber sheet 102 and the sponge 401 upward, and moving the rubber sheet 102 and the sponge 401 upward until they contact the inner top surface of the cylinder 1, so that the rubber sheet 102 and the sponge 401 return to a horizontal state under the pressure of the inner top surface of the cylinder 1.
[0033] The sponge 401 is initially set in an inverted frustum shape; the diameter of the cleaning surface 40101 is larger than the diameter of the rubber sheet 102; when the sponge 401 rotates with the push rod 101, the cleaning surface 40101 will return to its original shape, thereby increasing the surface area of the cleaning surface 40101, which in turn increases the contact area between the cleaning surface 40101 and the inner wall of the second inner cavity 1002, and improves the cleaning effect of the cleaning surface 40101 on the raw milk adhering to the second inner cavity 1002.
[0034] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.
Claims
1. A device for detecting plasticizers in raw milk, comprising a cylindrical body (1); a first inner cavity (1001) is provided inside the cylindrical body (1); a second inner cavity (1002) is provided inside the cylindrical body (1); the second inner cavity (1002) is located below the first inner cavity (1001); a stopper is connected to the cylindrical body (1); characterized in that: It also includes a liquid suction component, a collection tube (2), a sealing component and a cleaning component; the cylinder (1) is connected to a liquid suction component for sucking raw milk into the cylinder (1); the liquid suction component is connected to several collection tubes (2) for collecting raw milk to be tested; the several collection tubes (2) are arranged in a ring array; the cylinder (1) is connected to a sealing component for preventing raw milk from overflowing when the collection tubes (2) collect raw milk; the cylinder (1) is connected to a cleaning component for avoiding cross-contamination of raw milk.
2. The detection device for plasticizers in raw milk according to claim 1, characterized in that: The liquid suction assembly includes a push rod (101), a rubber sheet (102), a sleeve (103), a collar (104), an inlet pipe (105), and a squeezing rod (106); the push rod (101) is slidably connected to the cylinder (1); the rubber sheet (102) is fixedly connected to the lower side of the push rod (101); the sleeve (103) is fixedly connected to the outer side of the cylinder (1); an inlet (10301) is opened on the right side of the sleeve (103); the outer side of the sleeve (103) rotates. A collar (104) is connected to each collection tube (2); an inlet tube (105) is connected to one side of each collection tube (2) near the collar (104); several squeezing rods (106) are fixed to the other end of each inlet tube (105); each inlet tube (105) is slidably connected to the collar (104); each inlet tube (105) can be detached from the collar (104); each inlet tube (105) is connected to the adjacent water inlet (10301).
3. The detection device for plasticizers in raw milk according to claim 2, characterized in that: The sealing assembly includes an elastic element (201), a sealing plate (202), a first rubber barb (203), and a second rubber barb (204); a collection port (1003) is provided on the upper side of the cylinder (1); an elastic element (201) is fixedly connected inside the collection port (1003) on the cylinder (1); a sealing plate (202) for preventing raw milk from overflowing from the collection port (1003) is fixedly connected to the other end of the elastic element (201); a number of first rubber barbs (203) are fixedly connected to the collar (104); the number of first rubber barbs (203) are arranged in a ring array; two adjacent first rubber barbs (203) are arranged symmetrically from top to bottom; a number of second rubber barbs (204) are fixedly connected to the side of each collection tube (2) near the collar (104); each second rubber barb (204) corresponds to the position of the adjacent first rubber barb (203).
4. The detection device for plasticizers in raw milk according to claim 3, characterized in that: The cleaning assembly includes a water reservoir (301), a connecting pipe (302), a locking pin (303), and a third rubber barb (304); the water reservoir (301) is fixedly connected to the upper side of the cylinder (1); the water reservoir (301) stores clean water; a micro pump is installed inside the water reservoir (301); the connecting pipe (302) is connected to the lower side of the water reservoir (301); an electric valve is installed inside the connecting pipe (302); the other end of the connecting pipe (302) passes through... The upper side of the sleeve (103) is connected to the water inlet (10301); several locking pins (303) for moving the sealing plate (202) to the left are slidably connected on the sleeve (103); several third rubber barbs (304) are fixed on each locking pin (303); several slots (10401) are opened on the collar (104); each slot (10401) corresponds to the position of the adjacent third rubber barb (304).
5. The detection device for plasticizers in raw milk according to claim 1, characterized in that: The second inner cavity (1002) is designed with a narrow opening from top to bottom.
6. The detection device for plasticizers in raw milk according to claim 4, characterized in that: The diameter of the sealing plate (202) is larger than the longitudinal section diameter of the inlet (10301).
7. The detection device for plasticizers in raw milk according to claim 4, characterized in that: It also includes a sealing sleeve (107); a number of sealing sleeves (107) are fixed on the collar (104) to prevent raw milk from flowing out along the gap between the collection port (1003) and the inlet pipe (105); each sealing sleeve (107) is slidably connected to the adjacent inlet pipe (105).
8. The detection device for plasticizers in raw milk according to claim 7, characterized in that: It also includes a sealing ring (305); a sealing ring (305) is fixedly connected in each slot (10401) on the collar (104) to prevent water from overflowing; each sealing ring (305) is slidably connected to the adjacent pin (303).
9. The detection device for plasticizers in raw milk according to claim 2, characterized in that: It also includes a sponge wiper (401) and a stop block (402); when the push rod (101) is not used, a rubber sheet (102) is fixedly attached to the lower side; the rubber sheet (102) is rotatably connected to the lower side of the push rod (101); the sponge wiper (401) is fixedly attached to the upper side of the rubber sheet (102); a cleaning surface (40101) is provided on the upper side of the sponge wiper (401); the stop block (402) is fixedly attached to the left side of the second inner cavity (1002) of the cylinder (1).
10. The detection device for plasticizers in raw milk according to claim 9, characterized in that: The sponge wipe (401) is initially set in an inverted frustum shape; the diameter of the cleaning surface (40101) is larger than the diameter of the rubber sheet (102).