Sampling device for dairy product detection

Abstract

The invention relates to the technical field of dairy product production, in particular to a sampling device for dairy product detection, which comprises a conveyor, containing barrels, a conversion assembly and a sampling mechanism, a plurality of containing barrels are uniformly placed on the conveyor, the conversion assembly is arranged in the middle of the rear of the conveyor, and the sampling mechanism is arranged on the conversion assembly. The sampling mechanism and the conversion assembly are matched to synchronously filter, quantitatively and accurately sample dairy products at different positions and different depths, and the sampled dairy products can be discharged and bottled while sampling is carried out, so that the sampling detection accuracy and the sampling efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of dairy product production, in particular to a sampling device for dairy product detection. Background Art

[0002] Dairy products refer to various foods made from animal milk such as cow's milk, goat's milk, etc. as the main raw materials. There are many kinds of dairy products, and each product has its own unique flavor and use. Among them, dairy beverages containing fruit particles are very popular in the market because they combine the nutrition of dairy products with the fresh taste of fruit, which is delicious and healthy. In order to ensure the quality and safety of dairy products, they need to be tested after production to eliminate potential harmful substances.

[0003] Sampling in dairy product testing is an important step in ensuring product quality and safety. Existing sampling devices only sample the same position of dairy products, and the test samples are too single, making the test results not universal. Secondly, when sampling dairy beverages containing fruit particles, the existing sampling devices cannot filter the fruit particles simultaneously, and the granular fruit particles will interfere with the test. Moreover, after sampling, the existing sampling devices need to put the sample into a sample bottle before continuing to the next sampling. Continuous sampling is not possible, which reduces the sampling efficiency. Summary of the invention

[0004] Technical problem to be solved: The present invention provides a sampling device for dairy product testing, which can solve the problems pointed out in the above background technology.

[0005] Technical solution: In order to achieve the above purpose, the present invention adopts the following technical solution, a sampling device for dairy product testing, including a conveyor, a filling barrel, a conversion assembly and a sampling mechanism, a plurality of filling barrels are evenly placed on the conveyor, a conversion assembly is arranged in the middle position of the rear of the conveyor, and a sampling mechanism is arranged on the conversion assembly.

[0006] The conversion assembly comprises a T-shaped fixing frame, the bottom end of which is fixedly mounted on the ground, the top end of which is provided with a stepped groove with a smaller size at the top and a larger size at the bottom, and a driving member is arranged in the stepped groove.

[0007] The sampling mechanism comprises a rectangular box body, a top cover plate is detachably mounted on the upper end of the rectangular box body, a filter tube group for sampling dairy products at different positions and depths in a barrel is symmetrically arranged on the rectangular box body, a control component for adjusting the opening and closing of the filter tube group is arranged inside the rectangular box body, and a suction component for quantitatively taking dairy products is arranged on the upper end of the top cover plate.

[0008] Furthermore, the driving member includes a rotating motor, which is installed on the lower bottom surface of the step groove through a motor seat, the output end of the rotating motor is connected to the fixed end of the lifting cylinder, the lifting cylinder is rotatably installed on the upper inner wall of the step groove, and the lower middle part of the rectangular box is connected to the telescopic end of the lifting cylinder.

[0009] Furthermore, the filter tube group is a plurality of cylinders arranged transversely, the bottom of the cylinder and the outer wall near the bottom are evenly provided with suction holes along the circumferential direction, and the upper end of the cylinder is fixedly mounted on the lower end of the rectangular box.

[0010] Furthermore, a matching cylinder is rotatably mounted on the inner wall of the cylinder, and the outer wall and bottom of the matching cylinder fit with the corresponding inner wall and bottom of the inner wall of the cylinder, and the length dimensions of the cylinder and the matching cylinder gradually increase from left to right.

[0011] Furthermore, the outer wall and bottom of the matching tube are provided with filtering holes at positions corresponding to the suction holes, the top end of the matching tube extends to the inside of the rectangular box, and the outer wall of the matching tube is rotatably mounted on the rectangular box.

[0012] Furthermore, the control component includes a transmission gear, and the transmission gear is fixedly sleeved on the outer wall of the matching cylinder extending to the inside of the rectangular box. Sliding grooves are opened at the front and back of the bottom end of the rectangular box. Racks are arranged at positions corresponding to the sliding grooves in the rectangular box. A protrusion slidably connected to the sliding groove is arranged at the lower end of the rack. Multiple transmission gears are meshed with corresponding racks, and rectangular holes are opened at positions corresponding to the racks on the left and right side end surfaces of the rectangular box.

[0013] Furthermore, ear plates are installed in the middle of the opposite surfaces of the two racks, and a connecting rod is rotatably installed between the two ear plates through a pin shaft. The front and rear sections of the connecting rod are both telescopic structures. The middle part of the connecting rod is rotatably installed on a rectangular box through a pin shaft, and an electric telescopic rod is installed on the left rear end surface inside the rectangular box. The telescopic end of the electric telescopic rod is installed on the connecting rod through a universal joint.

[0014] Furthermore, the suction assembly includes a piston disk, and the inner wall of the matching cylinder is slidably provided with a piston disk. The outer wall of the piston disk is made of rubber material. A pull rod is installed in the middle of the upper end surface of the piston disk, and the upper end of the pull rod extends to above the top cover plate.

[0015] Furthermore, the suction assembly also includes a forward and reverse motor, which is embedded in the middle of the upper surface of the top cover plate through a motor seat, and a threaded rod is installed on the upper surface of the top cover plate for symmetrical rotation back and forth, and the outer walls of the two threaded rods and the outer wall of the output shaft of the forward and reverse motor are commonly connected to a pulley group, and a linkage plate is threadedly connected to the threaded rod, and multiple pull rods are commonly connected to the lower ends of the corresponding linkage plates.

[0016] Furthermore, the threads on the threaded rods on the front and rear sides are in opposite directions, the linkage plates on the front and rear sides are arranged in a staggered manner, and the outer wall of the threaded rod is threadedly connected to a limiting ring at a position above the linkage plate.

[0017] Beneficial effects:

[0018] 1. The sampling mechanism and the conversion component are used to simultaneously filter, quantify and accurately sample dairy products at different positions and depths. The sampled dairy products can be discharged and bottled at the same time, which improves the accuracy and efficiency of sampling and detection.

[0019] 2. When entering the barrel, multiple cylinders of different lengths can reach different positions and depths, and sample dairy products at different levels and positions, thereby improving the detection effect. The suction hole and the filter hole are matched to open the cylinder for sampling after reaching the specified depth, preventing the dairy products from penetrating before reaching the specified depth, thereby improving the accuracy of sampling. The filter hole can automatically filter the fruit particles in the dairy products, reduce the particulate matter in the sample, and improve the detection effect.

[0020] 3. The threaded rods on the front and rear sides have opposite thread directions. The threaded rod on the front side drives the multiple pull-out rods on the front side to move upward for suction, and the dairy products at different positions and depths are sampled synchronously. At the same time, the threaded rod on the rear side drives the multiple pull-out rods on the rear side to press down and discharge, and the sampled samples are squeezed into the sample bottle, thereby realizing accurate and filtered sampling of dairy products at different positions and depths, and discharging and bottling the sampled dairy products at the same time. There is no need to wait for the dairy products to be bottled after sampling before sampling again, which greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0022] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0023] Figure 3 It is a partial structural schematic cross-sectional view of the sampling mechanism of the present invention.

[0024] Figure 4 It is a partial structural cross-sectional schematic diagram of the conversion assembly and sampling mechanism of the present invention.

[0025] Figure 5 The present invention is a cross-sectional schematic diagram of the structure of the cylinder body, the matching cylinder, the piston disc and the pull rod.

[0026] In the figure: 1. conveyor; 2. container; 3. conversion assembly; 31. T-shaped fixing frame; 32. stepped groove; 33. driving member; 331. rotating motor; 332. lifting cylinder; 4. sampling mechanism; 41. rectangular box; 42. top cover plate; 43. filter tube group; 431. cylinder; 432. suction hole; 433. matching cylinder; 434. filter hole; 44. control assembly; 441. transmission gear; 442. rack; 443. ear plate; 444. connecting rod; 445. electric telescopic rod; 45. suction assembly; 451. piston disc; 452. pulling rod; 453. forward and reverse motor; 454. threaded rod; 455. pulley group; 456. linkage plate; 457. limit ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0028] See also Figure 1 The present invention provides a technical solution: a sampling device for dairy product detection, comprising a conveyor 1, a filling barrel 2, a conversion component 3 and a sampling mechanism 4, wherein a plurality of filling barrels 2 are evenly placed on the conveyor 1, a conversion component 3 is arranged at the middle position of the rear of the conveyor 1, and a sampling mechanism 4 is arranged on the conversion component 3; when working, a plurality of filling barrels 2 containing dairy products are intermittently conveyed in sequence through the existing conveyor 1, and when the filling barrel 2 moves to the position of the sampling mechanism 4, sampling is intermittently stopped, and the conversion component 3 is raised and rotated after sampling is completed, so that the taken sample moves to the injection position to inject the sample into the sample bottle.

[0029] See also Figure 4 In this embodiment, the conversion assembly 3 includes a T-shaped fixing frame 31, the bottom end of the T-shaped fixing frame 31 is fixedly installed on the ground, and the top of the T-shaped fixing frame 31 is provided with a stepped groove 32 with a size that is small at the top and large at the bottom, and a driving member 33 is arranged in the stepped groove 32; the driving member 33 includes a rotating motor 331, and the rotating motor 331 is installed on the bottom surface of the lower part of the stepped groove 32 through a motor seat, and the output end of the rotating motor 331 is connected to the fixed end of the lifting cylinder 332, and the lifting cylinder 332 is rotatably installed on the upper inner wall of the stepped groove 32. When working, the sampling mechanism 4 is driven by the lifting cylinder 332 to perform a lifting movement and move to the sampling position. The rotating motor 331 is intermittently rotated at a specified angle so that the sample can be placed in the sample bottle in time after the sampling is completed.

[0030] See also Figure 1 , Figure 5 In this embodiment, the sampling mechanism 4 includes a rectangular box body 41, the middle part of the lower end of the rectangular box body 41 is connected to the telescopic end of the lifting cylinder 332, and the upper end of the rectangular box body 41 is detachably mounted with a top cover plate 42, and the rectangular box body 41 is symmetrically provided with a filter tube group 43 for sampling dairy products at different positions and depths in the filling barrel 2, and the filter tube group 43 is a plurality of cylinder bodies 431 arranged horizontally, and the bottom of the cylinder body 431 and the outer wall near the bottom are uniformly provided with suction holes 432 in the circumferential direction, and the upper end of the cylinder body 431 is fixedly mounted on the lower end of the rectangular box body 41; the inner wall of the cylinder body 431 is rotatably mounted with a matching cylinder 4 33, the outer wall and bottom of the matching cylinder 433 are in contact with the corresponding inner wall and bottom of the cylinder body 431, and the length dimensions of the cylinder body 431 and the matching cylinder 433 are gradually increased from left to right; the outer wall and bottom of the matching cylinder 433 are provided with filter holes 434 at positions corresponding to the suction hole 432, the top of the matching cylinder 433 extends to the inside of the rectangular box body 41, and the outer wall of the matching cylinder 433 is rotatably mounted on the rectangular box body 41; when working, multiple cylinder bodies 431 with different lengths can reach different positions and different depths when entering the containing barrel 2, so that dairy products at different levels and different positions can be obtained, thereby improving the accuracy of detection.

[0031] See also Figure 1 , Figure 3In this embodiment, a control assembly 44 for adjusting the opening and closing of the filter tube group 43 is arranged inside the rectangular box 41, and the control assembly 44 includes a transmission gear 441. The outer wall of the matching cylinder 433 extending to the inside of the rectangular box 41 is fixedly sleeved with a transmission gear 441. The bottom of the rectangular box 41 is provided with a sliding groove at the front and back ends. The rectangular box 41 is provided with a rack 442 at the position corresponding to the sliding groove. The lower end of the rack 442 is provided with a protrusion slidably connected to the sliding groove. The plurality of transmission gears 441 are connected to the corresponding racks 441. 2 are meshed, and rectangular holes are provided at positions corresponding to the left and right end faces of the rectangular box 41 and the racks 442; ear plates 443 are installed in the middle of the opposite faces of the two racks 442, and a connecting rod 444 is rotatably installed between the two ear plates 443 through a pin shaft. The front and rear sections of the connecting rod 444 are both telescopic structures, and the middle part of the connecting rod 444 is rotatably installed on the rectangular box 41 through a pin shaft. An electric telescopic rod 445 is installed on the left rear side end face of the inside of the rectangular box 41, and the telescopic end of the electric telescopic rod 445 is installed on the connecting rod 444 through a universal shaft. During operation, before moving down into the holding barrel 2 for sampling, the electric telescopic rod 445 is extended to drive the connecting rod 444 to rotate at an angle, thereby driving the racks 442 on the front and rear sides to move in opposite directions, driving the multiple meshed transmission gears 441 to rotate synchronously, so that the multiple matching cylinders 433 on the front side and the multiple matching cylinders 433 on the rear side rotate synchronously forward, so that the suction holes 432 and the filtering holes 434 in the filter tube groups 43 on the front and rear sides are staggered and closed, and then the lifting cylinder 332 drives the filter tube group 43 on the front side to move into the holding barrel 2. After reaching the sampling depth, the electric telescopic rod 445 contracts, so that the racks 44 on the front and rear sides of the rack 2 moves toward each other, driving the meshed transmission gear 441 to rotate synchronously in the opposite direction, so that the corresponding multiple matching cylinders 433 rotate synchronously in the opposite direction, and finally driving all the suction holes 432 and the filtering holes 434 to open correspondingly, and the dairy products of different depths are sampled simultaneously through the suction component 45, and the situation that the dairy products have penetrated before reaching the specified depth during the downward movement of the cylinder 431 in the filling barrel 2 will not occur, thereby improving the sampling accuracy; the set suction holes 432 and filtering holes 434 can not only accurately sample different depths, but also filter the fruit particles in the dairy products, reduce the particulate matter in the sample, and improve the detection accuracy.

[0032] See also Figure 2 , Figure 5In this embodiment, a suction assembly 45 for quantitatively taking out dairy products is provided at the upper end of the top cover plate 42, and the suction assembly 45 includes a piston disk 451, and the inner wall of the matching cylinder 433 is slidably provided with a piston disk 451, and the outer wall of the piston disk 451 is made of rubber material, and a pull rod 452 is installed in the middle of the upper end surface of the piston disk 451, and the upper end of the pull rod 452 extends to the top of the top cover plate 42; a forward and reverse motor 453 is embedded in the middle of the upper end surface of the top cover plate 42 through a motor seat, and a threaded rod 454 is installed on the upper end surface of the top cover plate 42 symmetrically rotating in the front and rear, and the outer walls of the two threaded rods 454 are connected together with the outer wall of the output shaft of the forward and reverse motor 453 There is a pulley group 455, and a linkage plate 456 is threadedly connected to the threaded rod 454, and multiple pull-out rods 452 are commonly connected to the lower ends of the corresponding linkage plates 456; the threads on the threaded rods 454 on the front and rear sides are in opposite directions, and the linkage plates 456 on the front and rear sides are staggered in height, and the outer wall of the threaded rod 454 is threadedly connected to a limiting ring 457 at a position above the linkage plate 456; the limiting ring 457 provided in the present application can be rotated on the threaded rod 454 to adjust the height position, thereby assisting in limiting the upward movement of the pull-out rod 452 by adjusting the position of the limiting ring 457, thereby realizing the control of the suction amount of dairy products according to different needs. During operation, after sampling is completed, the electric telescopic rod 445 extends out, so that the rack 442 and the corresponding gear 441 cooperate, and finally the matching cylinder 433 is synchronously rotated forward by a certain angle, so that the suction hole 432 and the filter hole 434 are staggered and closed, and then the lifting cylinder 332 drives the two filter tube groups 43 to move up to the specified height, and the rotating motor 331 drives the rectangular box 41 to rotate, and the cylinder 431 after sampling is rotated to the rear position, and at the same time, the filter tube group 43 to be sampled at the rear position moves to the front sampling position to prepare for sampling. In the process of the rotating motor 331 driving the filter tube groups 43 on the front and rear sides to convert their positions, the conveyor 1 drives the next loading bucket 2 to move to the sampling position, and then the lifting cylinder 332 drives the filter tube group 43 to move down. At this time, the filter tube group 43 moved to the front side reaches the specified height. At the sampling position in the barrel 2, the filter tube group 43 that has completed sampling is moved to the bottling position, and then the electric telescopic rod 445 repeats the above operation to open all the filter holes 434 corresponding to the suction holes 432. At this time, the forward and reverse motors 453 are started, and the threaded rods 454 on the front and rear sides are driven to rotate synchronously through the pulley group 455. Since the thread directions of the threaded rods 454 are opposite, the front threaded rod 454 drives the front multiple pulling rods 452 to move up and suck through the linkage plate 456, and at the same time, the rear threaded rod 454 drives the rear multiple pulling rods 452 to press down and discharge, thereby realizing accurate and filtered sampling of dairy products at different depths and discharging and bottling the sampled dairy products at the same time. There is no need to wait for the dairy products to be bottled after sampling before sampling again, which greatly improves work efficiency.

[0033] During specific operation, multiple barrels 2 filled with dairy products are intermittently transported in sequence through the existing conveyor 1. When the barrels 2 move to the position of the sampling mechanism 4, they stop intermittently, and the electric telescopic rod 445 is extended to drive the connecting rod 444 to rotate at an angle, thereby driving the racks 442 on the front and rear sides to move in opposite directions, driving the multiple gears meshing with the racks 442 on the front and rear sides to rotate forward synchronously, so that the multiple matching cylinders 433 on the front side and the multiple matching cylinders 433 on the rear side rotate forward synchronously, so that the suction holes 432 and the filtering holes 434 in the filter tube groups 43 on the front and rear sides are staggered and closed, and then the lifting cylinder 332 drives the filter tube group 43 on the front side to move into the barrel 2. After reaching the sampling depth, the electric telescopic rod 445 contracts, so that the racks 442 on the front and rear sides of the rack move toward each other, driving the meshed transmission gear 441 to rotate in the opposite direction synchronously, so that the corresponding multiple matching cylinders 433 rotate in the opposite direction synchronously, and finally drive all the suction holes 432 and the filtering holes 434 Correspondingly opened, when entering the filling barrel 2 through multiple cylinders 431 of different lengths, they can reach different positions and different depths. At this time, the forward and reverse motors 453 are started, and the threaded rods 454 on the front and rear sides are driven to rotate synchronously through the pulley group 455. Since the threaded directions of the threaded rods 454 are opposite, the threaded rods 454 on the front side drive the multiple pulling rods 452 on the front side to move up and suck through the linkage plate 456, so that dairy products at different positions and different depths can be sampled synchronously. At the same time, the threaded rods 454 on the rear side drive the multiple pulling rods 452 on the rear side to press down and discharge, and the sampled samples can be squeezed into the sample bottle, thereby realizing accurate and filtered sampling of dairy products at different positions and depths, and discharging and bottling the sampled dairy products at the same time, and then the motor 331 is rotated to a specified angle to exchange the positions of the filter tube groups 43 on the front and rear sides, and the operation is repeated. There is no need to wait for the dairy products to be bottled after sampling before sampling again, which greatly improves work efficiency.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for dairy product testing, comprising a conveyor (1), a container (2), a conversion assembly (3) and a sampling mechanism (4), characterized in that: A plurality of containing barrels (2) are evenly placed on the conveyor (1), a conversion assembly (3) is arranged at the middle position of the rear of the conveyor (1), and a sampling mechanism (4) is arranged on the conversion assembly (3); The conversion assembly (3) comprises a T-shaped fixing frame (31), the bottom end of the T-shaped fixing frame (31) is fixedly mounted on the ground, the top end of the T-shaped fixing frame (31) is provided with a stepped groove (32) with a smaller size at the top and a larger size at the bottom, and a driving member (33) is arranged in the stepped groove (32); The sampling mechanism (4) comprises a rectangular box (41), a top cover plate (42) is detachably mounted on the upper end of the rectangular box (41), a filter tube group (43) for sampling dairy products at different positions and depths in the container (2) is symmetrically arranged on the rectangular box (41), a control component (44) for adjusting the opening and closing of the filter tube group (43) is arranged inside the rectangular box (41), and a suction component (45) for quantitatively drawing and taking dairy products and pressing down for bottling is arranged on the upper end of the top cover plate (42).

2. A sampling device for dairy product detection according to claim 1, characterized in that: The driving member (33) comprises a rotating motor (331), which is mounted on the bottom surface of the step groove (32) via a motor seat, the output end of the rotating motor (331) is connected to the fixed end of the lifting cylinder (332), the lifting cylinder (332) is rotatably mounted on the upper inner wall of the step groove (32), and the middle part of the lower end of the rectangular box (41) is connected to the telescopic end of the lifting cylinder (332).

3. A sampling device for dairy product detection according to claim 1, characterized in that: The filter tube group (43) is a plurality of cylinders (431) arranged transversely, the bottom of the cylinder (431) and the outer wall near the bottom are evenly provided with suction holes (432) along the circumferential direction, and the upper end of the cylinder (431) is fixedly mounted on the lower end of the rectangular box (41).

4. A sampling device for dairy product detection according to claim 3, characterized in that: The inner wall of the cylinder (431) is rotatably mounted with a matching cylinder (433), the outer wall and bottom of the matching cylinder (433) are in contact with the corresponding inner wall and bottom of the cylinder (431), and the lengths of the cylinder (431) and the matching cylinder (433) gradually increase from left to right.

5. A sampling device for dairy product detection according to claim 4, characterized in that: The outer wall and bottom of the matching cylinder (433) are provided with filter holes (434) at positions corresponding to the suction hole (432); the top end of the matching cylinder (433) extends into the interior of the rectangular box (41); and the outer wall of the matching cylinder (433) is rotatably mounted on the rectangular box (41).

6. A sampling device for dairy product detection according to claim 4, characterized in that: The control assembly (44) comprises a transmission gear (441), and the transmission gear (441) is fixedly sleeved on the outer wall of the matching cylinder (433) extending to the inside of the rectangular box (41); sliding grooves are provided at the front and rear ends of the bottom of the rectangular box (41); racks (442) are provided at positions corresponding to the sliding grooves in the rectangular box (41); a protrusion slidably connected to the sliding grooves is provided at the lower end of the rack (442); a plurality of transmission gears (441) are meshed with corresponding racks (442); and rectangular holes are provided at positions corresponding to the racks (442) on the left and right side end surfaces of the rectangular box (41).

7. A sampling device for dairy product detection according to claim 6, characterized in that: An ear plate (443) is installed in the middle of the opposite surfaces of the two racks (442), a connecting rod (444) is rotatably installed between the two ear plates (443) via a pin shaft, the front and rear sections of the connecting rod (444) are both telescopic structures, the middle section of the connecting rod (444) is rotatably installed on the rectangular box (41) via a pin shaft, an electric telescopic rod (445) is installed on the left rear end surface inside the rectangular box (41), and the telescopic end of the electric telescopic rod (445) is installed on the connecting rod (444) via a universal shaft.

8. A sampling device for dairy product testing according to claim 4, characterized in that: The suction assembly (45) includes a piston disk (451), and the inner wall of the matching cylinder (433) is slidably provided with a piston disk (451). The outer wall of the piston disk (451) is made of rubber material. A pull rod (452) is installed in the middle of the upper end surface of the piston disk (451), and the upper end of the pull rod (452) extends to the top of the top cover plate (42).

9. A sampling device for dairy product testing according to claim 8, characterized in that: The suction assembly (45) further comprises a forward and reverse motor (453), the forward and reverse motor (453) being embeddedly mounted on the middle part of the upper end surface of the top cover plate (42) via a motor seat, a threaded rod (454) being symmetrically mounted on the upper end surface of the top cover plate (42) for rotation in the front and rear directions, the outer walls of the two threaded rods (454) and the outer wall of the output shaft of the forward and reverse motor (453) being commonly connected with a pulley group (455), a linkage plate (456) being threadedly connected to the threaded rod (454), and a plurality of pulling rods (452) being commonly connected with the lower ends of the corresponding linkage plates (456).

10. A sampling device for dairy product testing according to claim 9, characterized in that: The threads on the threaded rods (454) on the front and rear sides are in opposite directions, the linkage plates (456) on the front and rear sides are arranged in a staggered manner, and the outer wall of the threaded rod (454) is threadedly connected to a limiting ring (457) at a position above the linkage plate (456).

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