A dairy product sampling and testing device

Abstract

The present invention relates to a milk product sampling and testing device, belonging to the technical field of milk product production equipment. It comprises a sterile tank body for storing milk products, the bottom outer wall of the sterile tank body is annular and fixedly connected with a plurality of supporting legs at equal intervals, a feed pipe is provided on the top of one side of the sterile tank body, a discharge pipe is provided on the bottom of one side of the sterile tank body, and valve bodies are installed on both the discharge pipe and the feed pipe, and a rotating column is vertically rotatably connected to the inside of the sterile tank body. The present invention can not only achieve the stirring effect of the milk products, but also achieve the effect of automatic sampling, and can perform all-round sampling for different liquid level heights, which greatly improves the sampling range, thereby improving the accuracy of the detection; when cleaning the tank body, the rotation of the rotating column can also be used to achieve stirring and cleaning, and at the same time, the sampling mechanism can also perform cleaning operations on itself and automatically discharge the cleaning water to the outside, thereby improving the overall practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of dairy product production equipment and relates to a dairy product sampling and detection device. Background Art

[0002] Dairy products are various foods made from cow's milk or goat's milk and their processed products as the main raw materials, with or without adding appropriate amounts of vitamins, minerals and other auxiliary materials, and processed in accordance with the conditions specified by laws, regulations and standards. They are also called cream products. Dairy products are rich in protein and other nutrients.

[0003] During the production process of dairy products, they are kept sealed as much as possible from the beginning of milking to prevent the intrusion of external contaminants. For example, in a dairy farm, the milk will flow into a sealed tank through a pipe to avoid contact with the air and human contamination. Such a sealed production method can maintain the quality and safety of the product throughout the production chain. During the production process or before filling, dairy products will be sampled and tested to ensure that various nutrients such as protein in dairy products meet the production requirements. At present, the sampling of dairy products is mostly done by setting a sampling tube for sampling at the bottom of the tank. The valve on the sampling tube is usually closed and is only opened when sampling. The sampling bottle is aligned with the sampling tube for sampling. Although this method is relatively simple in operation, it can only sample and test dairy products at the bottom of the tank, resulting in a small sampling range. In addition, sediment is easily generated at the bottom of the tank, which can easily affect the accuracy of the detection. Therefore, we propose a dairy product sampling and detection device to solve the above-mentioned problems. Summary of the invention

[0004] In view of this, the present invention provides a dairy product sampling and detection device in order to solve the problem that the current sampling method can only sample from the bottom of the tank, resulting in a small sampling range and sediment is easily generated at the bottom of the tank, which easily affects the detection accuracy.

[0005] To achieve the above object, the present invention provides the following technical solution: comprising a sterile tank for storing dairy products, wherein the bottom outer wall of the sterile tank is annular and equidistantly fixedly connected with a plurality of supporting legs, a feed pipe is provided at the top of one side of the sterile tank, a discharge pipe is provided at the bottom of one side of the sterile tank, and valve bodies are installed on the discharge pipe and the feed pipe, and further comprising:

[0006] A rotating column, which is vertically rotatably connected to the interior of the sterile tank;

[0007] A plurality of stirring blades are fixedly connected to the outer wall of the rotating column at equal intervals in a vertical direction, and are used for stirring the dairy product;

[0008] A driving mechanism, disposed on the top outer wall of the sterile tank, is used to drive the rotating column to rotate and drive the stirring blade to rotate to complete the stirring function;

[0009] A plurality of sampling mechanisms are arranged on the outer wall of the rotating column at equal intervals in the vertical direction and are respectively arranged corresponding to the plurality of stirring blades, so that sampling operations at multiple angles can be realized as the rotating column rotates.

[0010] Furthermore, the driving mechanism includes a driving motor fixedly connected to the top outer wall of the sterile tank body, a small gear is fixedly sleeved on the output shaft of the driving motor, and the top of the rotating column rotates through the top of the sterile tank body and is fixedly sleeved with a large gear meshing with the small gear.

[0011] Furthermore, the sampling mechanism includes a fixed seat fixedly connected to the outer wall of the rotating column, a support plate is fixedly connected to the side of the fixed seat away from the rotating column, a piston cavity is opened inside the support plate, a piston block is sealingly and slidably connected in the piston cavity, a piston rod is fixedly connected to the side of the piston block close to the fixed seat, a one-way liquid inlet pipe connected to the piston cavity is fixedly connected through the side of the support plate away from the fixed seat, and a one-way liquid outlet pipe connected to the piston cavity is fixedly connected through one side of the support plate.

[0012] Furthermore, the interior of the rotating column is a hollow structure, and the ends of the multiple one-way liquid outlet tubes away from the support plate are fixedly connected to the same sampling tube. One end of the sampling tube extends through the interior of the rotating column to the bottom of the sterile tank body and is installed with a control valve.

[0013] Furthermore, the sampling tube includes an integrally formed first vertical section, a horizontal section, and a second vertical section, the horizontal section is arranged between the first vertical section and the second vertical section, a plurality of one-way liquid outlet tubes are connected to the first vertical section, and the top of the first vertical section is a closed structure, one end of the horizontal section is fixedly penetrated through one side of the rotating column, and the connection between the horizontal section and the second vertical section is located inside the rotating column, the second vertical section is fixedly connected through the center position of the bottom wall of the rotating column, and at the same time is sealed and rotatably connected through the center position of the bottom of the sterile tank body, and the control valve is installed on one side of the second vertical section located below the bottom of the sterile tank body.

[0014] Furthermore, a mounting groove is provided inside the fixing seat, and an end of the piston rod away from the piston block passes through the side where the support plate and the fixing seat are connected and extends into the mounting groove; a bottom wall of the mounting groove is rotatably connected to a rotating shaft, a planetary gear is fixedly sleeved on the rotating shaft, an eccentric shaft is fixedly connected to the top of the planetary gear, a vertical shaft is fixedly connected to the top side of the piston rod located in the mounting groove, and a connecting rod is rotatably connected to the vertical shaft and the eccentric shaft.

[0015] Furthermore, a fixed block is fixedly connected to the lower inner part of the rotating column, and an inner rod is rotatably connected to the top of the fixed block. The outer wall of the inner rod is fixedly sleeved with a plurality of sun gears meshing with the corresponding planetary gears. The outer wall of the rotating column is provided with a plurality of clearance notches used in conjunction with the planetary gears. The top end of the inner rod rotates through the top of the rotating column and extends upward. A vertical plate is fixedly connected to the top outer wall of the sterile tank body, and a horizontal plate is fixedly connected to the top of one side of the vertical plate, and the top end of the inner rod is rotatably connected to the bottom of the horizontal plate, and a clamping assembly for limiting the rotation of the inner rod is provided at the bottom of the horizontal plate.

[0016] Furthermore, the clamping assembly includes two mounting blocks symmetrically fixedly connected to the bottom of the cross plate, a same bidirectional screw rod is rotatably connected between the two mounting blocks, clamping blocks are fixedly sleeved on the positive and negative threaded sections of the bidirectional screw rod, arc grooves are provided on the sides of the two clamping blocks close to each other, a screw motor is fixedly connected to the side of one mounting block away from the bidirectional screw rod, and the output shaft of the screw motor rotates through one side of the mounting block and is fixedly connected to one end of the bidirectional screw rod, and a circular block is fixedly sleeved on the outer wall of the inner rod for use with the two arc grooves.

[0017] Furthermore, the top end of the inner rod rotates through the top of the horizontal plate and is fixedly connected with an operating handle.

[0018] Furthermore, a water inlet pipe is provided at the top of one side of the sterile tank body, and a valve body is installed on the water inlet pipe.

[0019] The beneficial effects of the present invention are:

[0020] The present invention starts a driving motor to drive the rotating column to rotate. When the inner rod is not in a state of restricted rotation, the rotation of the stirring blade and the support plate can be used to achieve a stirring effect on the dairy product. When the inner rod is in a state of restricted rotation, the support plate can be rotated to drive the piston block to move back and forth to achieve an automatic sampling effect, and can perform all-round sampling for different liquid level heights, greatly improving the sampling range and thus improving the accuracy of detection; when cleaning the tank body, the rotation of the rotating column can also be used to achieve stirring cleaning, and the sampling mechanism can also be enabled to clean itself and automatically discharge the cleaning water to the outside, thereby improving the overall practicality.

[0021] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 This is a stereoscopic diagram of the overall structure of a dairy product sampling and testing device of the present invention;

[0024] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of a milk product sampling and testing device of the present invention;

[0025] Figure 3 It is a stereoscopic diagram of the overall structure of a sampling mechanism of a dairy product sampling and testing device of the present invention;

[0026] Figure 4 It is a three-dimensional cross-sectional view of the overall structure of a sampling mechanism of a dairy product sampling and testing device of the present invention;

[0027] Figure 5 for Figure 4 A three-dimensional diagram of the local structure;

[0028] Figure 6 It is a three-dimensional sectional exploded view of the connection structure between the fixing seat and the support plate of a dairy product sampling and testing device of the present invention;

[0029] Figure 7 The present invention is a three-dimensional bottom view of the connection structure between the horizontal plate and the inner rod of a dairy product sampling and testing device.

[0030] Figure numerals: 1, sterile tank; 2, discharge pipe; 3, vertical plate; 4, support leg; 5, rotating column; 6, feed pipe; 7, horizontal plate; 8, drive motor; 9, large gear; 10, small gear; 11, stirring blade; 12, fixed seat; 121, mounting groove; 13, inner rod; 14, water inlet pipe; 15, support plate; 151, piston chamber; 16, one-way liquid inlet pipe; 17, fixed block; 18, sun gear; 19, piston block; 20, one-way discharge Liquid pipe; 21, sampling tube; 211, first vertical section; 212, horizontal section; 213, second vertical section; 22, control valve; 23, piston rod; 24, vertical shaft; 25, rotating shaft; 26, planetary gear; 27, eccentric shaft; 28, connecting rod; 29, round block; 30, operating handle; 31, clearance gap; 32, mounting block; 33, screw motor; 34, bidirectional screw; 35, clamping block; 351, arc groove; 36, valve body. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] Example 1

[0033] like Figure 1-Figure 3 As shown, a dairy product sampling and testing device comprises a sterile tank body 1, a discharge pipe 2, a plurality of supporting legs 4, a rotating column 5, a feed pipe 6 and a plurality of stirring blades 11, wherein the sterile tank body 1 is used to store dairy products, the plurality of supporting legs 4 are fixedly connected to the bottom outer wall of the sterile tank body 1 in a circular shape and equidistantly, the feed pipe 6 is arranged at the top of one side of the sterile tank body 1, the discharge pipe 2 is arranged at the bottom of one side of the sterile tank body 1, and valve bodies 36 are installed on the discharge pipe 2 and the feed pipe 6, the dairy products can be transported to the sterile tank body 1 through the feed pipe 6 for storage or processing, and then transported out from the discharge pipe 2 for filling or entering the next processing step, the rotating column 5 is vertically rotatably connected to the inside of the sterile tank body 1, and the plurality of stirring blades 11 are vertically equidistantly fixedly connected to the outer wall of the rotating column 5 for stirring the dairy products. The top outer wall of the sterile tank body 1 is fixedly connected with a driving motor 8, and a pinion 10 is fixedly sleeved on the output shaft of the driving motor 8. The top of the rotating column 5 rotates through the top of the sterile tank body 1 and is fixedly sleeved with a large gear 9 meshing with the pinion 10. When the driving motor 8 is started, the rotating column 5 can be driven to rotate through the meshing movement of the pinion 10 and the large gear 9, and then the stirring blade 11 can be driven to rotate, so as to achieve the effect of stirring the dairy product. In the preparation or filling process, the production of dairy products can be completed by stirring.

[0034] The present invention can be used in the field of milk product sampling and detection devices, and can also be applied to other fields of the present invention.

[0035] Example 2

[0036] This embodiment is a further improvement of the previous embodiment: Figure 1-Figure 7As shown, the dairy product sampling and detection device also includes a plurality of sampling mechanisms which are vertically equidistantly arranged on the outer wall of the rotating column 5, and are respectively arranged corresponding to the plurality of stirring blades 11, so as to realize multi-angle sampling operation as the rotating column 5 rotates; the sampling mechanism includes a fixed seat 12 fixedly connected to the outer wall of the rotating column 5, a support plate 15 is fixedly connected to the side of the fixed seat 12 away from the rotating column 5, a piston cavity 151 is opened inside the support plate 15, a piston block 19 is sealingly and slidably connected in the piston cavity 151, a piston rod 23 is fixedly connected to the side of the piston block 19 close to the fixed seat 12, a one-way liquid inlet pipe 16 connected to the piston cavity 151 is penetrated and fixedly connected to the side of the support plate 15 away from the fixed seat 12, and a one-way liquid outlet pipe 20 connected to the piston cavity 151 is penetrated and fixedly connected to the side of the support plate 15. When the piston rod 23 moves and drives the piston block 19 to move toward the fixed seat 12, the dairy products in the sterile tank body 1 can be sucked into the piston cavity 151 through the one-way liquid inlet pipe 16. Conversely, when the piston block 19 moves away from the fixed seat 12, the dairy products sucked into the piston cavity 151 can be sent out through the one-way liquid outlet pipe 20, thereby achieving the effect of direct sampling inside the sterile tank body 1; at the same time, by setting up multiple sets of sampling mechanisms, and vertically arranging them on the rotating column 5, dairy products with different liquid level heights can be sampled at the same time, thereby improving the accuracy of subsequent detection.

[0037] In one aspect of the present embodiment, a mounting groove 121 is provided inside the fixing seat 12, and the end of the piston rod 23 away from the piston block 19 passes through the side where the support plate 15 and the fixing seat 12 are connected and extends into the mounting groove 121. The bottom wall of the mounting groove 121 is rotatably connected with a rotating shaft 25, a planetary gear 26 is fixedly sleeved on the rotating shaft 25, an eccentric shaft 27 is fixedly connected to the top of the planetary gear 26, and a vertical shaft 24 is fixedly connected to the top side of the piston rod 23 located in the mounting groove 121, and a connecting rod 28 is rotatably connected to the vertical shaft 24 and the eccentric shaft 27. When the planetary gear 26 rotates, it can drive the eccentric shaft 27 to rotate and move, and drive the piston rod 23 to move through the connecting rod 28. When the planetary gear 26 rotates one circle, the eccentric shaft 27 rotates one circle synchronously, and then the piston rod 23 can be driven by the connecting rod 28 to complete a reciprocating movement, thereby realizing the entire complete sampling process of extracting and delivering the dairy product, and the number of rotations of the planetary gear 26 can be controlled according to the sampling amount actually required.

[0038] In one aspect of the present embodiment, a fixed block 17 is fixedly connected to the lower inner part of the rotating column 5, and the top of the fixed block 17 is rotatably connected to the inner rod 13. The outer wall of the inner rod 13 is fixedly sleeved with a plurality of sun gears 18 meshing with the corresponding planetary gears 26. The outer wall of the rotating column 5 is provided with a plurality of clearance notches 31 used in conjunction with the planetary gears 26. The top end of the inner rod 13 rotates through the top of the rotating column 5 and extends upward. The top outer wall of the sterile tank body 1 is fixedly connected to a vertical plate 3, and the top of one side of the vertical plate 3 is fixedly connected to a horizontal plate 7, and the top end of the inner rod 13 is rotatably connected to the bottom of the horizontal plate 7, and the bottom of the horizontal plate 7 is provided with a clamping assembly for limiting the rotation of the inner rod 13. One side of the planetary gear 26 extends through the clearance gap 31 to the inside of the rotating column 5 and meshes with the sun gear 18. When sampling is not needed and only the stirring function is needed, the inner rod 13 is not restricted in rotation by the clamping assembly. At this time, during the rotation of the rotating column 5, the stirring blade 11, the fixed seat 12 and the support plate 15 will be driven to rotate synchronously at the same time. The fixed seat 12 will drive the planetary gear 26 to rotate synchronously, and the inner rod 13 will also rotate synchronously with the rotation of the rotating column 5, so that the sun gear 18 also rotates. Therefore, during the rotation of the planetary gear 26 around the sun gear 18, the planetary gear 26 will not rotate with the rotating shaft 25 as the center, and will not drive the piston rod 23 to move. Therefore, in this state, only the stirring blade 11 and the support plate 15 will realize the stirring function, and the stirring function will not be realized. The sampling function is realized; when sampling is required, the inner rod 13 is restricted in rotation by the clamping assembly. At this time, during the rotation of the rotating column 5, the stirring blade 11, the fixed seat 12 and the support plate 15 will still be driven to rotate synchronously, but the inner rod 13 will not rotate, and the sun gear 18 will not rotate either. At this time, the planetary gear 26 will rotate in the process of rotating around the sun gear 18. For ease of control, the planetary gear 26 and the sun gear 18 can be set to the same diameter, so that when the planetary gear 26 rotates around the sun gear 18, the planetary gear 26 also rotates one circle. In other words, the rotating column 5 can be controlled to rotate one circle to drive the piston rod 23 to complete a reciprocating movement, thereby realizing a complete sampling operation.

[0039] In one aspect of the present embodiment, the clamping assembly includes two mounting blocks 32 symmetrically fixedly connected to the bottom of the cross plate 7, a same bidirectional screw 34 is rotatably connected between the two mounting blocks 32, clamping blocks 35 are fixedly sleeved on the positive and negative threaded sections of the bidirectional screw 34, arc grooves 351 are provided on the sides of the two clamping blocks 35 close to each other, a screw motor 33 is fixedly connected to the side of one mounting block 32 away from the bidirectional screw 34, and the output shaft of the screw motor 33 rotates through one side of the mounting block 32 and is fixedly connected to one end of the bidirectional screw 34, and a circular block 29 is fixedly sleeved on the outer wall of the inner rod 13 for use with the two arc grooves 351. Starting the lead screw motor 33 drives the bidirectional lead screw 34 to rotate, which can drive the two clamping blocks 35 to move relative to each other. When the two clamping blocks 35 are close to each other, the two arc grooves 351 can be used to clamp the two sides of the circular block 29, thereby achieving the effect of limiting the rotation of the inner rod 13. Conversely, when the two clamping blocks 35 move away from each other, the clamping of the circular block 29 is released, and the inner rod 13 can rotate synchronously with the rotating column 5; anti-slip grooves can be set in the arc grooves 351, and anti-slip grooves can also be set on the outer wall of the circular block 29 to increase the clamping effect of the clamping blocks 35 on the circular block 29.

[0040] Example 3

[0041] This embodiment is a further improvement of the previous embodiment: Figure 1-Figure 5 As shown, the interior of the rotating column 5 is a hollow structure, and the ends of the multiple one-way liquid outlet pipes 20 away from the support plate 15 are fixedly connected to the same sampling tube 21, and one end of the sampling tube 21 extends through the interior of the rotating column 5 to the bottom of the sterile tank body 1 and is installed with a control valve 22. When the sampled dairy products are sent out from the piston cavity 151 through the one-way liquid outlet pipe 20, the dairy products flowing out of the multiple one-way liquid outlet pipes 20 can enter the sampling tube 21 at the same time. When the control valve 22 is closed, the dairy products will be temporarily stored in the sampling tube 21. When the sampled dairy products need to be taken out, the control valve 22 can be opened to make the dairy products flow out of the sampling tube 21, thereby realizing the sampling operation; in the sampling process, the sampling bottle can be sealed and connected to the port of the sampling tube 21 first, and then the control valve 22 can be opened, so as to achieve the effect of sealed sampling.

[0042] In one aspect of the present embodiment, the sampling tube 21 includes an integrally formed first vertical section 211, a horizontal section 212 and a second vertical section 213, the horizontal section 212 is arranged between the first vertical section 211 and the second vertical section 213, a plurality of one-way liquid outlet pipes 20 are connected to the first vertical section 211, and the top of the first vertical section 211 is a closed structure, one end of the horizontal section 212 is fixedly penetrated through one side of the rotating column 5, and the connection between the horizontal section 212 and the second vertical section 213 is located inside the rotating column 5, the second vertical section 213 is fixedly connected to the bottom wall of the rotating column 5 at the center position, and at the same time is sealed and rotatably connected to the bottom center position of the sterile tank body 1, and the control valve 22 is installed on the side of the second vertical section 213 located below the bottom of the sterile tank body 1. Since the second vertical section 213, the rotating column 5 and the sterile tank body 1 are all at the same center position, when the rotating column 5 rotates, the stirring blade 11 and the support plate 15 can be driven to rotate at the same time, and the sampling tube 21 also rotates synchronously with the rotating column 5 and rotates in a sealed manner at the bottom of the sterile tank body 1. While achieving the stirring effect, it can also realize the sampling operation of dairy products at all angles at different liquid level heights through the rotation of the support plate 15 and the sampling function, thereby further improving the comprehensiveness of the sampling and making the detection accuracy more precise.

[0043] Example 4

[0044] This embodiment is a further improvement of the previous embodiment: Figure 1-Figure 4 As shown, the top end of the inner rod 13 rotates through the top of the horizontal plate 7 and is fixedly connected with an operating handle 30. When the equipment fails, the power is off, or there is no need for rotation sampling, the operating handle 30 can be directly rotated manually to drive the inner rod 13 to rotate, and the rotation of the inner rod 13 can drive the sun gear 18 to rotate, and then drive the planetary gear 26 to rotate, thereby achieving the effect of manual sampling, and can also sample dairy products with different liquid levels, improving the overall flexibility of use.

[0045] Example 5

[0046] This embodiment is a further improvement of the previous embodiment: Figure 1-Figure 2As shown, a water inlet pipe 14 is provided on the top of one side of the sterile tank body 1 , and a valve body 36 is installed on the water inlet pipe 14 . Cleaning water can be injected into the sterile tank body 1 through the water inlet pipe 14. After the equipment is used, the sterile tank body 1 needs to be cleaned. After the cleaning water is injected, the driving motor 8 is also started to drive the rotating column 5 to rotate, and the rotation of the stirring blade 11 and the support plate 15 is used to achieve the stirring function, thereby completing the cleaning of the inside of the sterile tank body 1 and the rotating column 5 itself. During the cleaning process, the screw motor 33 can be started to drive the clamping block 35 to clamp the circular block 29, so that the inner rod 13 is in a state of restricted rotation, and then during the rotation of the rotating column 5, not only the stirring and cleaning effect can be achieved, but also the piston block 19 can be used to continuously reciprocate to continuously suck the cleaning water in the sterile tank body 1 into the piston chamber 151, and then send it out, and at the same time open the control valve 22, so that the sampling tube 21 is always in an open state, and the cleaning water can be continuously discharged from the sampling tube 21, thereby achieving the cleaning effect of the entire sampling mechanism, and the cleaning water can also be automatically discharged outward.

[0047] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 8 and the screw motor 33 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A milk product sampling and testing device, comprising a sterile tank body (1) for storing milk products, the bottom outer wall of the sterile tank body (1) is annular and equidistantly fixedly connected with a plurality of supporting legs (4), a feed pipe (6) is provided at the top of one side of the sterile tank body (1), a discharge pipe (2) is provided at the bottom of one side of the sterile tank body (1), and valve bodies (36) are installed on both the discharge pipe (2) and the feed pipe (6), characterized in that: Also includes: A rotating column (5) is vertically rotatably connected to the interior of the sterile tank (1); A plurality of stirring blades (11) are fixedly connected to the outer wall of the rotating column (5) at equal intervals in a vertical direction and are used to stir the dairy product; A driving mechanism, disposed on the top outer wall of the sterile tank body (1), used to drive the rotating column (5) to rotate and drive the stirring blade (11) to rotate to complete the stirring function; A plurality of sampling mechanisms are arranged at equal intervals vertically on the outer wall of the rotating column (5), and are respectively arranged corresponding to the plurality of stirring blades (11), so as to realize multi-angle sampling operations as the rotating column (5) rotates; The sampling mechanism comprises a fixed seat (12) fixedly connected to the outer wall of the rotating column (5); a support plate (15) is fixedly connected to the side of the fixed seat (12) away from the rotating column (5); a piston cavity (151) is provided inside the support plate (15); a piston block (19) is sealingly and slidably connected inside the piston cavity (151); a piston rod (23) is fixedly connected to the side of the piston block (19) close to the fixed seat (12); a one-way liquid inlet pipe (16) connected to the piston cavity (151) is passed through and fixedly connected to the side of the support plate (15) away from the fixed seat (12); and a one-way liquid outlet pipe (20) connected to the piston cavity (151) is passed through and fixedly connected to the side of the support plate (15); The interior of the rotating column (5) is a hollow structure, and one end of the plurality of one-way liquid outlet pipes (20) away from the support plate (15) is fixedly connected to a same sampling tube (21), and one end of the sampling tube (21) extends through the interior of the rotating column (5) to below the bottom of the sterile tank body (1) and is provided with a control valve (22); The fixing seat (12) is provided with a mounting groove (121) inside, and an end of the piston rod (23) away from the piston block (19) passes through a side where the support plate (15) and the fixing seat (12) are connected and extends into the mounting groove (121); a rotating shaft (25) is rotatably connected to the bottom wall of the mounting groove (121); a planetary gear (26) is fixedly sleeved on the rotating shaft (25); an eccentric shaft (27) is fixedly connected to the top of the planetary gear (26); a vertical shaft (24) is fixedly connected to the top side of the piston rod (23) located in the mounting groove (121); and a connecting rod (28) is rotatably connected to the vertical shaft (24) and the eccentric shaft (27); A fixing block (17) is fixedly connected to the lower part of the rotating column (5), and the top of the fixing block (17) is rotatably connected to the inner rod (13). The outer wall of the inner rod (13) is fixedly sleeved with a plurality of sun gears (18) meshing with corresponding planetary gears (26). The outer wall of the rotating column (5) is provided with a plurality of clearance notches (31) for use with the planetary gears (26). The top of the inner rod (13) rotatably penetrates the top of the rotating column (5) and extends upward. The top outer wall of the sterile tank body (1) is fixedly connected to a vertical plate (3), and a horizontal plate (7) is fixedly connected to the top of one side of the vertical plate (3). The top of the inner rod (13) is rotatably connected to the bottom of the horizontal plate (7), and a clamping assembly for limiting the rotation of the inner rod (13) is provided at the bottom of the horizontal plate (7).

2. A milk product sampling and testing device as claimed in claim 1, characterized in that: The driving mechanism comprises a driving motor (8) fixedly connected to the outer wall of the top of the sterile tank body (1), a small gear (10) being fixedly sleeved on the output shaft of the driving motor (8), and a large gear (9) meshing with the small gear (10) being fixedly sleeved on the top of the rotating column (5) which rotates through the top of the sterile tank body (1) and is fixedly sleeved.

3. A milk product sampling and testing device as claimed in claim 1, characterized in that: The sampling tube (21) comprises an integrally formed first vertical section (211), a horizontal section (212) and a second vertical section (213); the horizontal section (212) is arranged between the first vertical section (211) and the second vertical section (213); a plurality of one-way liquid outlet pipes (20) are all connected to the first vertical section (211); and the top end of the first vertical section (211) is a closed structure; one end of the horizontal section (212) is fixedly penetrated through one side of the rotating column (5); and the connection between the horizontal section (212) and the second vertical section (213) is located inside the rotating column (5); the second vertical section (213) is penetrated and fixedly connected to the center of the bottom wall of the rotating column (5), and is simultaneously sealed and penetrated and rotatably connected to the center of the bottom of the sterile tank body (1); and the control valve (22) is installed on one side of the second vertical section (213) located below the bottom of the sterile tank body (1).

4. A milk product sampling and testing device as claimed in claim 1 or 3, characterized in that: The clamping assembly comprises two mounting blocks (32) symmetrically fixedly connected to the bottom of the horizontal plate (7); a same bidirectional screw rod (34) is rotatably connected between the two mounting blocks (32); clamping blocks (35) are fixedly sleeved on the positive and negative threaded sections of the bidirectional screw rod (34); arc grooves (351) are provided on the sides of the two clamping blocks (35) close to each other; a screw motor (33) is fixedly connected to the side of one mounting block (32) away from the bidirectional screw rod (34); an output shaft of the screw motor (33) rotatably passes through one side of the mounting block (32) and is fixedly connected to one end of the bidirectional screw rod (34); and a circular block (29) is fixedly sleeved on the outer wall of the inner rod (13) and is used in conjunction with the two arc grooves (351).

5. A milk product sampling and testing device as claimed in claim 4, characterized in that: The top end of the inner rod (13) rotates through the top of the transverse plate (7) and is fixedly connected to an operating handle (30).

6. A milk product sampling and testing device as claimed in claim 5, characterized in that: A water inlet pipe (14) is provided at the top of one side of the sterile tank body (1), and a valve body (36) is installed on the water inlet pipe (14).

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