A sampling device for detecting veterinary drug solutions

Abstract

This utility model provides a sampling device for veterinary drug solution detection, belonging to the field of detection and sampling technology. The sampling device includes a sampling body, a sealing cap assembly, a support base, a guide sampling tube, a rotation control mechanism, and a sealing connector. The sampling body has a cylindrical hollow structure with an opening at its upper end. An inlet and an outlet are provided on the side wall of the sampling body, symmetrically distributed at 180 degrees. The sealing cap assembly includes a main sealing cap and a secondary sealing cap. The main sealing cap is fixedly connected to the opening of the sampling body via a threaded connection. The secondary sealing cap is rotatably connected to one edge of the main sealing cap via a hinge shaft, supporting the opening and closing movement of the secondary sealing cap around the hinge shaft. A positioning groove is provided on the upper surface of the support base. This utility model can solve the problems of low sampling accuracy, poor sealing performance, complex operation, and inability to effectively observe the sampling process.

Description

Technical Field

[0001] This utility model belongs to the field of detection and sampling technology, specifically, it relates to a sampling device for detecting veterinary drug solutions. Background Technology

[0002] Veterinary drugs, as important medications for the prevention and treatment of animal diseases, play a vital role in modern animal husbandry and aquaculture. With increasingly stringent food safety requirements and regulations, the detection of veterinary drug residues has become a key focus of food safety supervision. Veterinary drug solution testing is a crucial step in ensuring the quality and safety of veterinary drugs, and accurate and reliable sampling is the foundation of this work. Currently, veterinary drug solution sampling mainly uses traditional tools such as pipettes, syringes, or simple sampling bottles. These traditional sampling methods have several shortcomings: First, sampling accuracy is difficult to control, especially for tests requiring precise quantification, where traditional tools cannot guarantee accuracy; second, sealing performance is generally poor, easily leading to solution evaporation or external contamination, affecting the reliability of test results; third, the operation process is complex, requiring multiple steps to complete sampling, increasing the risk of operational errors; fourth, the solution state cannot be visually observed, making it difficult to determine whether the solution is uniformly mixed, affecting the representativeness of the sample. While some improved sampling devices have emerged in the existing technology, such as those employing automatic sampling systems or samplers with stirring functions, these devices are often complex in structure, expensive, and still require improvement in sealing performance and ease of operation. In particular, grassroots testing institutions and small and medium-sized veterinary drug manufacturing enterprises need a veterinary drug solution sampling device that is simple in structure, easy to operate, cost-effective, and reliable in performance to meet their daily testing needs. Utility Model Content

[0003] In view of this, the present invention provides a sampling device for detecting veterinary drug solutions, which can solve the problems of low sampling accuracy, poor sealing performance, complicated operation and inability to effectively observe the sampling process.

[0004] This utility model is implemented as follows: This utility model provides a sampling device for detecting veterinary drug solutions, comprising a sampling body, a sealing cap assembly, a support base, a guide sampling tube, a rotation control mechanism, and a sealing connector. The sampling body is a cylindrical hollow structure with an opening at its upper end. An inlet and an outlet are provided on the side wall of the sampling body, symmetrically distributed at 180 degrees. The sealing cap assembly includes a main sealing cap and a secondary sealing cap. The main sealing cap is fixedly connected to the opening of the sampling body via a threaded connection. The secondary sealing cap is rotatably connected to one edge of the main sealing cap via a hinge shaft, supporting the opening and closing movement of the secondary sealing cap around the hinge shaft. The support base is a rectangular plate structure with a positioning groove on its upper surface. The shape of the positioning groove matches the bottom shape of the sampling body, allowing the bottom of the sampling body to be stably supported by embedding itself in the positioning groove.

[0005] The technical advantages of the sampling device for veterinary drug solution testing provided by this utility model are as follows: By setting up a combined structure of sampling body, sealing cap assembly, support base, guide sampling tube, rotation control mechanism and sealing connector, the accurate sampling function of veterinary drug solution is realized. The cylindrical hollow structure of the sampling body provides sufficient space for the solution. The symmetrical design of the inlet and outlet ensures the uniformity of solution flow. The double sealing design of the sealing cap assembly effectively prevents solution leakage and external contamination. The positioning groove design of the support base ensures the stable placement of the device. The overall structure is compact and reasonable and easy to operate.

[0006] Based on the above technical solution, the sampling device for detecting veterinary drug solutions of this utility model can be further improved as follows: The guide sampling tube includes a main sampling tube and a branch sampling tube. The main sampling tube is an L-shaped curved tubular structure. One end of the main sampling tube is connected to the liquid inlet of the sampling body through a sealing connector, and the other end of the main sampling tube extends to the center of the sampling body. The branch sampling tube is a straight tubular structure. One end of the branch sampling tube is connected to the curved part of the main sampling tube, and the other end of the branch sampling tube extends out of the sampling body.

[0007] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the guide sampling tube adopts a combination design of main sampling tube and branch sampling tube. The L-shaped curved structure of the main sampling tube can effectively guide the veterinary drug solution to flow from the inlet and reach the optimal position inside the sampling body. The straight structure of the branch sampling tube facilitates connection to external sampling equipment. The combined use of the two realizes precise control of the solution flow path, improves the accuracy and efficiency of sampling, and at the same time, the L-shaped structure can also reduce turbulence in the solution flow process, ensuring the sampling quality.

[0008] Furthermore, the rotation control mechanism includes a control handle, a transmission gear, and a fixed bracket; the fixed bracket is fixed to the side of the support base by bolts, the control handle is rotatably connected to the fixed bracket by a rotating shaft, and the end of the control handle is fixedly connected to the transmission gear, which meshes with an annular tooth groove set on the outer wall of the sampling body to drive the sampling body to rotate around its central axis.

[0009] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The rotary control mechanism realizes the precise rotation control function of the sampling body through the mechanical transmission design of the control handle, transmission gear and fixed bracket. The operator can drive the sampling body to rotate around its central axis by turning the control handle. This rotation function helps to fully mix the veterinary drug solution and ensure the representativeness and uniformity of the sample. At the same time, the mechanical transmission method is simple and reliable, with low maintenance cost and smooth operation.

[0010] Furthermore, the upper surface of the main sealing cover is provided with an observation window, which is a circular transparent structure, and the diameter of the observation window is within the range of one-half to two-thirds of the inner diameter of the sampling body; the inner surface of the main sealing cover is provided with an annular sealing groove, in which a rubber sealing ring is embedded, and the rubber sealing ring forms a sealing contact with the inner wall of the opening of the sampling body.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of the observation window on the main sealing cover allows the operator to directly observe the state of the veterinary drug solution inside the sampling body, which is convenient for monitoring the sampling process and judging the degree of mixing uniformity of the solution. The combination design of the annular sealing groove and the rubber sealing ring provides a reliable sealing effect, effectively preventing solution evaporation and the intrusion of external impurities. The transparent structure of the observation window does not affect the sealing performance while providing good visibility. The overall design takes into account both functionality and practicality.

[0012] Furthermore, the sampling body is shaped like a frustum cone, with the upper diameter being larger than the lower diameter, and the ratio of the upper diameter to the lower diameter being in the range of 1.2 to 1.8.

[0013] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the sampling body adopting the shape of a truncated cone has better hydrodynamic characteristics than the traditional cylindrical structure. The larger diameter at the upper end facilitates the injection and mixing of veterinary drug solution, while the smaller diameter at the lower end is conducive to the full precipitation and stratification of the solution. This gradual geometric shape can reduce dead angles and eddies in the solution flow process, improve the sampling accuracy, and the truncated cone structure also has better structural strength and stability.

[0014] Furthermore, the sealing connector includes an internal threaded connector and an external threaded connector; the internal threaded connector is fixedly connected to the inner wall of the liquid inlet of the sampling body, and the external threaded connector is fixedly connected to the end of the main sampling tube. The external threaded connector and the internal threaded connector are detachably connected through threaded engagement; an annular rubber gasket is provided between the internal threaded connector and the external threaded connector to enhance the sealing effect.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the sealing connector adopts the threaded connection method of internal thread joint and external thread joint to realize a reliable connection between the main sampling tube and the sampling body. The threaded fit provides sufficient connection strength and sealing performance. The detachable design facilitates the cleaning and maintenance of the device. The setting of the annular rubber gasket further enhances the sealing effect at the connection and prevents the solution from leaking from the connection part. The entire connection system not only ensures the structural integrity but also facilitates daily maintenance operations.

[0016] Furthermore, the outer wall surface of the sampling body is provided with multiple longitudinal ribs, which extend along the axial direction of the sampling body and are distributed at equal angles on the outer wall of the sampling body.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the multiple longitudinal ribs set on the outer wall of the sampling body not only enhance the structural strength and deformation resistance of the sampling body, but also provide a good hand grip surface for operators. The design of the longitudinal ribs increases the surface area of ​​the sampling body, which is conducive to improving the heat exchange efficiency between the device and the external environment. At the same time, the rib structure can also reduce the sliding of the device to a certain extent, improving the safety and stability of operation.

[0018] Furthermore, the bottom surface of the support base is provided with a wavy groove, which extends along the length of the support base, and the depth of the wavy groove is within one-quarter to one-third of the thickness of the support base.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the wave-shaped groove design on the bottom surface of the support base effectively increases the friction between the base and the placement surface, improves the stability of the device placement, the wave-shaped structure can also adapt to placement surfaces with different flatness, reduce the shaking and displacement of the device, and the groove design also helps the base to dissipate heat and prevent slippage, ensuring the stable performance of the device in various working environments.

[0020] Furthermore, the inner wall surface of the main sampling tube is provided with a spiral guide groove, which extends spirally around the central axis of the main sampling tube, and the spiral angle of the spiral guide groove is in the range of 30 degrees to 60 degrees.

[0021] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the spiral guide groove design on the inner wall of the main sampling tube can guide the veterinary drug solution to flow along the spiral trajectory. This flow mode helps to enhance the mixing effect of the solution and reduce the flow resistance. The spiral guide groove can also generate a certain centrifugal effect, which is conducive to the separation and homogenization of different components in the solution and improves the representativeness of the sampling. At the same time, the spiral structure also has a certain self-cleaning function, reducing solution residue.

[0022] Furthermore, the number of longitudinal ribs is 6 to 12, and the cross-sectional shape of the multiple longitudinal ribs is a trapezoidal structure, with the upper base width being smaller than the lower base width.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the reasonable control of the number of longitudinal ribs ensures sufficient structural strength of the sampling body and avoids the impact of too many ribs on the appearance and ease of operation of the device. The trapezoidal cross-section design gives the ribs better mechanical properties and processability. The trapezoidal structure with a small upper base and a large lower base provides good stress distribution and effectively prevents stress concentration. At the same time, the trapezoidal structure is also easy to demold and clean. Compared with existing technologies, the beneficial effects of the sampling device for veterinary drug solution testing provided by this utility model are as follows: First, the conical shape design of the sampling body combined with the L-shaped structure of the guide sampling tube achieves precise control and uniform mixing of the solution flow, significantly improving the representativeness and accuracy of the sampling. Second, the double-sealing design of the sealing cap assembly, combined with the annular sealing groove and rubber sealing ring, forms a reliable sealing system, effectively preventing solution leakage and external contamination, and ensuring the purity of the sample. Third, the mechanical transmission design of the rotation control mechanism allows the operator to precisely control the rotation of the sampling body, promoting thorough mixing of the solution and ensuring the uniformity of the sampling. Fourth, the observation window provides intuitive visual monitoring of the operation process, facilitating the judgment of sampling timing and solution state. Finally, the entire device is compact, easy to operate and maintain, suitable for various veterinary drug solution testing scenarios, and has good practical value and promising prospects for promotion. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a sampling device for detecting veterinary drug solutions. Figure 2 Schematic diagram of the guide sampling tube structure; Figure 3 This is a schematic diagram of the cross-section of the sampling body; The attached diagram lists the components represented by each number as follows: 10. Sampling body; 11. Sealing cap assembly; 111. Main sealing cap; 112. Secondary sealing cap; 12. Support base; 13. Guide sampling tube; 131. Main sampling tube; 132. Branch sampling tube; 14. Rotation control mechanism; 141. Control handle; 142. Transmission gear; 143. Fixed bracket; 15. Sealing connector; 151. Internal threaded connector; 152. External threaded connector; 153. Annular rubber gasket; 16. Liquid inlet; 17. Liquid outlet; 18. Observation window; 19. Longitudinal rib. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] like Figure 1-3 The diagram illustrates an embodiment of a sampling device for detecting veterinary drug solutions provided by this utility model. In this embodiment, it includes a sampling body 10, a sealing cap assembly 11, a support base 12, a guide sampling tube 13, a rotation control mechanism 14, and a sealing connector 15. The sampling body is a cylindrical hollow structure with an opening at its upper end. An inlet 16 and an outlet 17 are provided on the side wall of the sampling body, symmetrically distributed at 180 degrees on the side wall. The sealing cap assembly includes a main sealing cap 111 and a secondary sealing cap 112. The main sealing cap is fixedly connected to the opening of the sampling body via a threaded connection. The secondary sealing cap is rotatably connected to one side edge of the main sealing cap via a hinge shaft, supporting the opening and closing movement of the secondary sealing cap around the hinge shaft. The support base is a rectangular plate structure with a positioning groove on its upper surface. The shape of the positioning groove matches the bottom shape of the sampling body, and the bottom of the sampling body is embedded in the positioning groove for stable support.

[0028] In the above technical solution, the guiding sampling tube includes a main sampling tube 131 and a branch sampling tube 132; the main sampling tube is an L-shaped curved tubular structure, one end of the main sampling tube is connected to the liquid inlet of the sampling body through a sealing connector, and the other end of the main sampling tube extends to the center of the sampling body; the branch sampling tube is a straight tubular structure, one end of the branch sampling tube is connected to the curved part of the main sampling tube, and the other end of the branch sampling tube extends out of the sampling body.

[0029] Furthermore, in the above technical solution, the rotation control mechanism includes a control handle 141, a transmission gear 142, and a fixed bracket 143; the fixed bracket is fixed to the side of the support base by bolts, the control handle is rotatably connected to the fixed bracket by a rotating shaft, and the end of the control handle is fixedly connected to the transmission gear, which meshes with the annular tooth groove set on the outer wall of the sampling body to drive the sampling body to rotate around its central axis.

[0030] The bottom of the positioning groove is equipped with a bearing, the outer ring wall of the bearing is engaged with the mounting cavity, and the top of the inner ring wall is in contact with the bottom of the sampling body.

[0031] Furthermore, in the above technical solution, the upper surface of the main sealing cover is provided with an observation window 18, which is a circular transparent structure, and the diameter of the observation window is within the range of one-half to two-thirds of the inner diameter of the sampling body; the inner surface of the main sealing cover is provided with an annular sealing groove, and a rubber sealing ring is embedded in the annular sealing groove, and the rubber sealing ring forms a sealing contact with the inner wall of the opening of the sampling body.

[0032] Furthermore, in the above technical solution, the sampling body is shaped like a frustum cone, with the upper diameter of the sampling body being larger than the lower diameter, and the ratio of the upper diameter to the lower diameter being in the range of 1.2 to 1.8.

[0033] Furthermore, in the above technical solution, the sealing connector includes an internal threaded connector 151 and an external threaded connector 152; the internal threaded connector is fixedly connected to the inner wall of the liquid inlet of the sampling body, and the external threaded connector is fixedly connected to the end of the main sampling tube. The external threaded connector and the internal threaded connector are detachably connected through threaded engagement; an annular rubber gasket 153 is provided between the internal threaded connector and the external threaded connector to enhance the sealing effect.

[0034] Furthermore, in the above technical solution, the outer wall surface of the sampling body is provided with multiple longitudinal ribs 19, which extend along the axial direction of the sampling body, and the multiple longitudinal ribs are distributed at equal angles on the outer wall of the sampling body.

[0035] Furthermore, in the above technical solution, the bottom surface of the support base is provided with a wavy groove, which extends along the length of the support base, and the depth of the wavy groove is within one-quarter to one-third of the thickness of the support base.

[0036] Furthermore, in the above technical solution, a spiral guide groove is provided on the inner wall surface of the main sampling tube. The spiral guide groove extends spirally around the central axis of the main sampling tube, and the spiral angle of the spiral guide groove is in the range of 30 degrees to 60 degrees.

[0037] Furthermore, in the above technical solution, the number of longitudinal ribs is 6 to 12, and the cross-sectional shape of the multiple longitudinal ribs is a trapezoidal structure, with the upper base width of the trapezoidal structure being smaller than the lower base width.

[0038] The operating method of this utility model is as follows: Specifically, before use, first check whether the connections of each component are firm, and ensure that the sealing cap assembly, guide sampling tube, and sealing connector are all in normal condition. Place the support base on a stable workbench, ensuring that the corrugated groove of the base is in full contact with the workbench to provide stable support. Embed the sampling body into the positioning groove of the support base, so that the device is in a stable vertical position. Open the main sealing cap and the secondary sealing cap, and slowly inject the veterinary drug solution to be tested into the sampling body through the branch sampling tube port of the guide sampling tube. During the injection, observe the change of the solution level in the observation window to ensure that the solution volume reaches the predetermined sampling requirements. After the injection is completed, close the secondary sealing cap, and then tighten the main sealing cap to ensure a good seal. Start the rotation control mechanism, and slowly turn the control handle to rotate the sampling body around its central axis. During the rotation, observe the mixing state of the solution through the observation window. Stop the rotation when the solution is evenly mixed. Determine the sampling volume according to the testing requirements, open the valve at the outlet or connect the sampling equipment, and take out the required amount of solution by gravity or by slightly tilting the device. After sampling, promptly clean all components of the device, especially the inner surfaces that come into contact with the solution, to ensure no residue affects future use. The entire operation is simple and intuitive, requiring no complex technical training to master.

[0039] The following is a specific embodiment of this utility model: The sampling body is made of food-grade 304 stainless steel, and is shaped like a frustum of a cone. The upper opening diameter is 80 mm, the lower diameter is 50 mm, the height is 120 mm, the wall thickness is 3 mm, and the internal volume is approximately 400 ml, which can meet the sampling requirements of most veterinary drug solution testing. The side wall of the sampling body has a 10 mm diameter inlet and outlet, symmetrically distributed at 180 degrees on the same horizontal plane, 30 mm from the bottom of the sampling body. This positioning design facilitates solution injection and outflow while ensuring sampling accuracy. The outer wall surface of the sampling body has eight longitudinal ribs, each 2 mm high and 5 mm wide, with a trapezoidal cross-section. The upper base width is 3 mm, and the lower base width is 5 mm. The ribs extend along the axial direction of the sampling body and are evenly distributed at 45-degree intervals on the outer wall, which not only enhances structural strength but also provides a good grip surface. The sealing cap assembly includes a main sealing cap and a secondary sealing cap, both made of polytetrafluoroethylene (PTFE) to ensure good chemical stability and sealing performance. The main sealing cap is a circular cover with a diameter of 90 mm and a thickness of 15 mm. A 30 mm diameter circular observation window, made of 5 mm thick, high-transparency tempered glass, is located at the center of its upper surface, capable of withstanding certain pressure and temperature changes. The inner surface of the main sealing cap has an annular sealing groove, 3 mm wide and 2 mm deep, into which a nitrile rubber sealing ring with a hardness of 70 Shore A is embedded. This ring maintains good elasticity and sealing performance within a temperature range of -20°C to 80°C. The secondary sealing cap has a semi-circular structure and is connected to the main sealing cap via a stainless steel hinge shaft. The hinge shaft has a diameter of 4 mm and a length of 25 mm, allowing the secondary sealing cap to open and close 90 degrees. The support base is made of high-strength engineering plastic ABS material, with an overall rectangular plate structure, 150 mm long, 120 mm wide, and 20 mm thick. The upper surface has a circular positioning groove, 52 mm in diameter and 8 mm deep, that matches the shape of the sampling body's bottom, ensuring a stable embedding of the sampling body. The bottom surface of the base has three wavy grooves, each extending along its length, with a depth of 5 mm and a width of 8 mm. The wave has a wavelength of 30 mm and a height of 3 mm, significantly enhancing the friction and stability between the base and the placement surface. The guide sampling tube is made of transparent polycarbonate material and consists of a main sampling tube and branch sampling tubes.

[0040] The main sampling tube has an L-shaped bend, a total length of 180 mm, an inner diameter of 6 mm, a wall thickness of 2 mm, a bend angle of 90 degrees, and a bend radius of 15 mm. One end connects to the inlet of the sampling body via a threaded connection, and the other end extends to the center of the sampling body. The inner wall surface of the main sampling tube is equipped with a spiral guide groove with a spiral angle of 45 degrees, a groove depth of 0.5 mm, a groove width of 1 mm, and 3 spiral turns, which guides the solution to flow along a spiral trajectory and produces a certain mixing effect. The branch sampling tube has a straight tubular structure, a length of 100 mm, and an inner diameter of 4 mm. One end connects to the bend of the main sampling tube, and the other end is equipped with a standard hose connector for easy connection to various sampling devices. The rotation control mechanism consists of three main components: a control handle, a transmission gear, and a fixed bracket. The fixed bracket is made of aluminum alloy and is fixed to the side of the support base with four M6 bolts. The bracket is 60 mm high and 40 mm wide. The control handle has an L-shaped structure, with a total length of 200 mm and a handle length of 150 mm. It is covered with anti-slip rubber material, and a 20 mm diameter transmission gear with 20 teeth and a module of 1.5 mm is fixedly connected to its end. The outer wall of the sampling body has an annular toothed groove that matches the transmission gear. The groove is 3 mm wide and 2 mm deep, and rotational transmission is achieved through the meshing of the gear and the groove. The sealing connectors include internal and external threaded joints, both made of brass and nickel-plated to improve corrosion resistance. The internal threaded joint has an outer diameter of 12 mm, an inner diameter of 6 mm, and an M10×1.5 thread specification, and is fixedly connected to the inner wall of the liquid inlet of the sampling body. The external threaded joint has an outer diameter of 10 mm, a thread specification matching the internal threaded joint, and is fixedly connected to the end of the main sampling tube. A 1 mm thick annular rubber gasket made of fluororubber is placed between the two joints, providing excellent chemical resistance and sealing performance. The operating principle of the entire device is as follows: when veterinary drug solution sampling is required, the device is first placed stably and the solution is injected through the guide sampling tube. Then, the sampling body is rotated by the rotation control mechanism to fully mix the solution. Finally, the required sample amount is taken out through the outlet. The whole process is simple to operate, accurate in sampling, and reliable in sealing. It can meet the sampling requirements of various veterinary drug solution testing and has broad application prospects and practical value in veterinary drug production enterprises, testing institutions and research units.

[0041] Specifically, the principle of this invention is as follows: The sampling body adopts a frustum-shaped design, utilizing the flow characteristics of fluids in variable cross-section pipes. The larger cross-section at the upper end facilitates rapid filling and initial mixing of the solution, while the smaller cross-section at the lower end facilitates stable settling and precise positioning of the solution. This geometric shape reduces dead zones and eddies, improving sampling uniformity. The L-shaped curved structure of the guide sampling tube, based on the fluid guidance principle, effectively guides the solution flow to the optimal position of the sampling body, avoiding the impact and turbulence that may occur with straight-line flow. Simultaneously, the L-shaped structure also provides a certain buffering effect, making the solution flow smoother. The rotation control mechanism utilizes the gear transmission principle to convert manual operation into the rotational motion of the sampling body. The centrifugal force and shear force generated by the rotational motion promote thorough mixing of the solution, ensuring that components of different densities and viscosities are evenly distributed. The sealing system employs a multi-seal principle. The threaded connection between the main sealing cap and the sampling body provides the primary sealing force, while the rubber sealing ring within the annular sealing groove forms an elastic sealing surface. Together, these two elements create a reliable sealing barrier. The observation window is designed based on the principle of visual detection, enabling operators to observe changes in the solution's state in real time and promptly determine the degree of mixing and the timing of sampling. The entire device works by achieving precise, safe, and convenient sampling of veterinary drug solutions through the precise coordination of mechanical structures and the rational application of fluid dynamics, providing a reliable sample basis for subsequent testing and analysis.

Claims

1. A sampling device for detecting veterinary drug solutions, characterized in that, The system includes a sampling body, a sealing cap assembly, a support base, a guide sampling tube, a rotation control mechanism, and a sealing connector. The sampling body is a cylindrical hollow structure with an opening at the top. An inlet and an outlet are located on the side wall of the sampling body, symmetrically distributed at 180 degrees. The sealing cap assembly includes a main sealing cap and a secondary sealing cap. The main sealing cap is fixedly connected to the opening of the sampling body via a threaded connection. The secondary sealing cap is rotatably connected to one edge of the main sealing cap via a hinge shaft, supporting its opening and closing motion around the hinge shaft. The support base is a rectangular plate structure with a positioning groove on its upper surface. The shape of the positioning groove matches the bottom shape of the sampling body, allowing the bottom of the sampling body to be embedded in the positioning groove for stable support.

2. The sampling device for detecting veterinary drug solutions according to claim 1, characterized in that, The guide sampling tube includes a main sampling tube and a branch sampling tube; the main sampling tube is an L-shaped curved tubular structure, one end of which is connected to the liquid inlet of the sampling body through a sealing connector, and the other end of which extends to the center of the sampling body; the branch sampling tube is a straight tubular structure, one end of which is connected to the curved part of the main sampling tube, and the other end of which extends out of the sampling body.

3. The sampling device for detecting veterinary drug solutions according to claim 2, characterized in that, The rotation control mechanism includes a control handle, a transmission gear, and a fixed bracket. The fixed bracket is fixed to the side of the support base by bolts. The control handle is rotatably connected to the fixed bracket via a rotating shaft. The end of the control handle is fixedly connected to the transmission gear, which meshes with an annular toothed groove on the outer wall of the sampling body to drive the sampling body to rotate around its central axis.

4. The sampling device for detecting veterinary drug solutions according to claim 3, characterized in that, The upper surface of the main sealing cap is provided with an observation window, which is a circular transparent structure. The diameter of the observation window is between one-half and two-thirds of the inner diameter of the sampling body. The inner surface of the main sealing cap is provided with an annular sealing groove, in which a rubber sealing ring is embedded. The rubber sealing ring forms a sealing contact with the inner wall of the opening of the sampling body.

5. A sampling device for detecting veterinary drug solutions according to claim 4, characterized in that, The sampling body is shaped like a frustum of a cone, with the upper diameter being larger than the lower diameter, and the ratio of the upper diameter to the lower diameter being in the range of 1.2 to 1.

8.

6. A sampling device for detecting veterinary drug solutions according to claim 5, characterized in that, The sealing connector includes an internal threaded connector and an external threaded connector; the internal threaded connector is fixedly connected to the inner wall of the liquid inlet of the sampling body, and the external threaded connector is fixedly connected to the end of the main sampling tube. The external threaded connector and the internal threaded connector are detachably connected through threaded engagement; an annular rubber gasket is provided between the internal threaded connector and the external threaded connector to enhance the sealing effect.

7. A sampling device for detecting veterinary drug solutions according to claim 6, characterized in that, The outer wall surface of the sampling body is provided with multiple longitudinal ribs, which extend along the axial direction of the sampling body and are distributed at equal angles on the outer wall of the sampling body.

8. A sampling device for detecting veterinary drug solutions according to claim 7, characterized in that, The bottom surface of the support base is provided with a wavy groove, which extends along the length of the support base and the depth of the wavy groove is between one-quarter and one-third of the thickness of the support base.

9. A sampling device for detecting veterinary drug solutions according to claim 8, characterized in that, The inner wall surface of the main sampling tube is provided with a spiral guide groove, which extends spirally around the central axis of the main sampling tube, and the spiral angle of the spiral guide groove is in the range of 30 degrees to 60 degrees.

10. A sampling device for detecting veterinary drug solutions according to claim 9, characterized in that, The number of longitudinal ribs is 6 to 12, and the cross-sectional shape of the multiple longitudinal ribs is a trapezoidal structure, with the upper base width being smaller than the lower base width.

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