Multi-channel laminar flow type sampling device for food detection

Abstract

The invention discloses a multichannel laminar flow type sampling device for food detection, which comprises a handle, the lower end of the handle is detachably connected with a plurality of sampling assemblies, the plurality of sampling assemblies are detachably connected from top to bottom in sequence, each sampling assembly comprises a transition rod and a sampler, the sampler is detachably mounted at the lower end of the transition rod, a power mechanism is arranged in the handle, and the power mechanism is connected with the handle. The power mechanism drives the sampler to sample; the sampler comprises an outer cylinder, an inner cylinder, an upper connecting shaft, a lower connecting shaft and a sealing ring, the multiple sampling assemblies are arranged at equal intervals, equal-distance depth sampling can be carried out, when the sampler carries out sampling, the power mechanism drives the inner cylinder to rotate, the first feeding port and the second feeding port correspond to each other and are opened, a sample can enter the inner cylinder conveniently, and the sampling efficiency is improved. Then the first feeding hole and the second feeding hole are staggered, the sample is kept in the inner cylinder, and the first feeding hole and the second feeding hole are aligned again when the sample is discharged, so that the sample is convenient to discharge, sampling is convenient at different depths, and the sampling effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of sample sampling, in particular to a multi-channel laminar flow sampling device for food detection. Background Art

[0002] Food safety testing is critical to protecting public health, and obtaining representative, undisturbed original samples is the first step to ensuring the accuracy of test results. When testing liquid, semi-liquid, or foods with sedimentation / stratification properties (such as dairy products, beverages, sauces, fermentation broths, and edible oils), the distribution of components (such as fat, protein, microorganisms, sediment, and additives) at different depths often differs significantly. For example, fat in whole milk floats after standing, pulp in juice may settle, and concentration gradients of microorganisms and metabolites exist in fermentation tanks. Therefore, sampling at specific depths or performing depth profiles to obtain target components or assess overall homogeneity is crucial for accurate analysis.

[0003] At present, the common food sampling devices on the market mainly include manual samplers, auger samplers, and single-tube negative pressure suction devices. Although these devices have a simple structure and are easy to operate, they still have many limitations in practical applications. For example, manual samplers can usually only obtain samples from the surface or a single depth, which makes it difficult to meet the demand for simultaneous collection of samples at different depths; although the auger sampler can sample deep into the material, its structure is complex, difficult to clean, and prone to cross-contamination; and the single-tube suction device cannot complete the independent collection of samples from multiple depths at the same time due to its single channel, resulting in low detection efficiency and poor representativeness. Therefore, there is an urgent need for a multi-channel laminar flow sampling device for food testing. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-channel laminar flow sampling device for food detection, which inserts samplers arranged from top to bottom into the liquid to perform equidistant sampling at different depths in the liquid to ensure the sampling effect.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A multi-channel laminar flow sampling device for food testing includes a handle, a plurality of sampling assemblies detachably connected to the lower end of the handle, the plurality of sampling assemblies being detachably connected in sequence from top to bottom, the sampling assemblies including a transition rod and a sampler, the sampler being detachably mounted to the lower end of the transition rod, the handle being provided with a power mechanism that drives the sampler to perform sampling; The sampler includes an outer cylinder, an inner cylinder, an upper connecting shaft, a lower connecting shaft and a sealing ring. The upper and lower ends of the outer cylinder can be detachably connected to the upper and lower transition rods. The front and rear sides of the outer cylinder are both provided with a first feed port. The inner cylinder is arranged in the outer cylinder. The inner cylinder and the outer cylinder form a rotational fit. The front and rear sides of the inner cylinder are both provided with a second feed port corresponding to the first feed port. The upper connecting shaft and the lower connecting shaft are respectively connected to the upper and lower ends of the inner cylinder. The upper connecting shaft passes through the upper end of the outer cylinder and is connected to the upper transition rod, and the lower connecting shaft passes through the lower end of the outer cylinder and is connected to the lower transition rod. The sealing ring is fixed on the first feed port. The power mechanism drives each inner cylinder to rotate through the transition rod, and opens the first feed port and the second feed port at the same time.

[0006] By adopting the above technical solution, sampling at equal depths is performed using equally spaced samplers. When sampling, the inner cylinder is rotated so that both the first feed port and the second feed port are opened to facilitate entry of the sample. The inner cylinder is then rotated again to close the first feed port and the second feed port to facilitate storage and removal of the sample.

[0007] The present invention is further configured as follows: a third feed port used in conjunction with the first feed port is provided on the right side of the inner cylinder.

[0008] By adopting the above technical solution, it is convenient to take samples.

[0009] The present invention is further configured as follows: a first slot is provided at the upper end of the upper connecting shaft, a second slot is provided at the lower end of the lower connecting shaft, the transition rod includes a rotating shaft, an outer tube, a first joint and a second joint, the rotating shaft is inserted into the outer tube, the rotating shaft rotates in conjunction with the outer tube, the first joint is installed at the upper end of the rotating shaft, the upper end of the outer tube is detachably connected to the lower end of the handle or the lower end of the outer tube, the first joint can be clamped to the power mechanism or the second slot, the second joint is installed at the lower end of the rotating shaft, the lower end of the outer tube is detachably connected to the upper end of the outer tube, and the second joint is clamped to the first slot.

[0010] By adopting the above technical solution, it is convenient to transmit power through the transition rod.

[0011] The present invention is further configured as follows: the power mechanism includes a rotary motor, the rotary motor is embedded in the handle, a third slot is provided at the lower end of the output shaft of the rotary motor, and the third slot is engaged with the first joint.

[0012] By adopting the above technical solution, the rotating motor drives each rotating shaft and the inner cylinder to rotate.

[0013] The present invention is further configured as follows: a control panel is embedded in the upper end of the handle, and the rotating motor is electrically connected to the control panel.

[0014] By adopting the above technical solution, operation is convenient.

[0015] The present invention is further configured as follows: the upper end of the outer tube can be threadedly connected to the handle or the lower end of the outer tube, and the lower end of the outer tube can be threadedly connected to the upper end of the outer tube.

[0016] By adopting the above technical solution, the disassembly of various components is facilitated.

[0017] The present invention is further configured as follows: a protective sleeve is threadedly connected to the lower end of the outer cylinder at the lower end.

[0018] By adopting the above technical solution, it is convenient to protect the sampler at the bottom.

[0019] The present invention is further configured as follows: an identification component is sleeved on the sampling component.

[0020] By adopting the above technical solution, marking is convenient.

[0021] The present invention is further configured as follows: the identification assembly includes a connecting sleeve, a fixing knob and a floating plate, the connecting sleeve is arranged on the transition rod, the fixing knob is arranged on the connecting sleeve, the fixing knob is used to fix the connecting sleeve, and the floating plate is arranged at the lower end of the connecting sleeve.

[0022] By adopting the above technical solution, the sliding connecting sleeve is used to adjust the height of the identification component, while the fixing knob can be used for fixing. The floating plate can allow the entire device to float on the liquid surface, ensuring verticality and saving effort.

[0023] In summary, the present invention has the following beneficial effects: First, the multiple sampling components in the present invention are arranged at equal intervals, and sampling at equal depths can be performed. When sampling, the sampler drives the inner cylinder to rotate through the power mechanism, so that the first feed port and the second feed port are aligned and opened, which facilitates the sample to enter the inner cylinder, and then the first feed port and the second feed port are staggered to keep the sample in the inner cylinder. When discharging the sample, the first feed port and the second feed port are aligned again to facilitate the discharge of the sample. Sampling is convenient at different depths, ensuring the sampling effect.

[0024] Secondly, the inner cylinder of the present invention is also provided with a third feed port. When the sample does not need to be completely discharged, the third feed port can be aligned with the first feed port, while the second feed port remains closed. In this way, the sample can be removed from the inner cylinder using other tools to avoid the liquid attached to the outer wall of the outer cylinder and the sample in the inner cylinder from mixing and contaminating the sample during discharge.

[0025] Thirdly, the transition rod in the present invention can transmit power through the rotating shaft, so that each sampler can rotate and work accordingly, and the transition rod can be replaced with different lengths as needed to facilitate adaptation to different sampling requirements.

[0026] Fourthly, the identification component in the present invention can serve as an identification, allowing the device to float on the liquid surface and the sampling component to remain upright. Moreover, the position of the top sampler to the liquid surface can be adjusted by adjusting the height of the identification component, which is simple, convenient and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cross-sectional view of the sampler in the present invention; Figure 3 is a cross-sectional view of the identified components in the present invention; Figure 4 It is a cross-sectional view of the protective cover in the present invention; Figure 5 It is a horizontal cross-sectional view of the outer cylinder and the inner cylinder in the present invention.

[0028] In the figure: 1. Handle; 2. Transition rod; 21. Rotating shaft; 22. Outer tube; 23. First joint; 24. Second joint; 3. Sampler; 31. Outer tube; 32. Inner tube; 33. Upper connecting shaft; 34. Lower connecting shaft; 35. Sealing ring; 36. First feed port; 37. Second feed port; 38. Third feed port; 39. First slot; 310. Second slot; 4. Rotating motor; 41. Third slot; 5. Control panel; 6. Protective cover; 7. Identification assembly; 71. Connecting sleeve; 72. Fixing knob; 73. Floating plate. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0032] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, indirect connections via an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] Embodiment, a multi-channel laminar flow sampling device for food detection, such as Figures 1 to 5 As shown, the apparatus comprises a handle 1, the lower end of which is detachably connected to a plurality of sampling assemblies. The plurality of sampling assemblies are detachably connected in sequence from top to bottom. The sampling assembly comprises a transition rod 2 and a sampler 3, which is detachably mounted to the lower end of the transition rod 2. A power mechanism is provided within the handle 1, which drives the sampler 3 to perform sampling. The plurality of samplers 3 are equidistantly distributed through the transition rod 2 to enable sampling at different depths within the liquid.

[0034] The sampler 3 includes an outer cylinder 31, an inner cylinder 32, an upper connecting shaft 33, a lower connecting shaft 34 and a sealing ring 35. The upper and lower ends of the outer cylinder 31 can be detachably connected to the upper and lower transition rods 2. A first feed port 36 is provided on the front and rear sides of the outer cylinder 31. The inner cylinder 32 is arranged in the outer cylinder 31. The inner cylinder 32 and the outer cylinder 31 form a rotational fit. A second feed port 37 corresponding to the first feed port 36 is provided on the front and rear sides of the inner cylinder 32. The upper connecting shaft 33 and the lower connecting shaft 34 are respectively connected to the upper and lower ends of the inner cylinder 32. The upper connecting shaft 33 passes through the upper end of the outer cylinder 31 and is connected to the upper transition rod 2. The lower connecting shaft 34 passes through the lower end of the outer cylinder 31 and is connected to the lower transition rod 2. The sealing ring 35 is fixed on the first feed port 36. The power mechanism drives each inner cylinder 32 to rotate through the transition rod 2, and opens the first feed port 36 and the second feed port 37 at the same time. When using the sampler 3, the inner cylinder 32 is rotated so that the first feed port 36 and the second feed port 37 overlap, allowing the sample to enter the inner cylinder 32 from both the front and rear sides. The inner cylinder 32 is rotated again so that the first feed port 36 and the second feed port 37 are offset. The sample is retained in the inner cylinder 32 and can be removed without affecting the sample. The sealing ring 35 ensures the tightness of the sample in the inner cylinder 32.

[0035] When taking out the sample, first wipe the liquid on the sampling component, then rotate the first feed port 36 and the second feed port 37 in the inner cylinder 32 again to overlap, and let the sample be discharged from the first feed port 36 and the second feed port 37, which is simple and convenient.

[0036] Of course, if the sample on the sampling component is a viscous liquid that is difficult to remove, it is easy to mix with the liquid outside the outer cylinder 31 when pouring out the sample, thereby contaminating the sample. Therefore, a third feed port 38 is opened on the right side of the inner cylinder 32 for use with the first feed port 36. The third feed port 38 is overlapped with one of the first feed ports 36 that remains in an upward state, and the second feed port 37 is still in a closed state. At this time, other sampling tools can be used to absorb the sample in the inner cylinder 32 to avoid sample contamination.

[0037] A first slot 39 is defined at the upper end of the upper connecting shaft 33, and a second slot 310 is defined at the lower end of the lower connecting shaft 34. The transition rod 2 includes a rotating shaft 21, an outer tube 22, a first joint 23, and a second joint 24. The rotating shaft 21 is inserted into the outer tube 22 and rotatably engages with the outer tube 22. The first joint 23 is mounted on the upper end of the rotating shaft 21, and the upper end of the outer tube 22 is detachably connected to the lower end of the handle 1 or the lower end of the outer tube 31. The first joint 23 can be engaged with the power mechanism or the second slot 310. The second joint 24 is mounted on the lower end of the rotating shaft 21, and the lower end of the outer tube 22 is detachably connected to the upper end of the outer tube 31. The second joint 24 is engaged with the first slot 39. The power mechanism includes a rotating motor 4, which is embedded in the handle 1. The lower end of the output shaft of the rotating motor 4 is defined with a third slot 41, which is engaged with the first joint 23.

[0038] The rotating motor 4 is connected to the rotating shaft 21 via the third slot 41 and the first joint 23. The rotating shaft 21 is connected to the inner tube 32 via the second joint 24 and the first slot 39. The inner tube 32 is further connected to the next rotating shaft 21 via the first joint 23 and the second slot 310. In this way, the rotating motor 4 drives all the inner tubes 32 to rotate. Of course, the connection method between the outer tube 22, the handle 1, and the outer tube 31 must be consistent and ensure sealing.

[0039] A control panel 5 is embedded at the upper end of the handle 1, and the rotary motor 4 is electrically connected to the control panel 5. By operating the control panel 5, the rotary motor 4 can be controlled to rotate to different angles.

[0040] In this embodiment, the upper end of the outer tube 22 can be threadedly connected to the lower end of the handle 1 or the outer tube 31, and the lower end of the outer tube 22 can be threadedly connected to the upper end of the outer tube 31. Of course, other connection methods are also possible.

[0041] The lower end of the outer cylinder 31 at the lower end is threadedly connected with a protective sleeve 6. The protective sleeve 6 mainly protects the various interfaces and threads at the lower end of the sampler 3 at the lower end to prevent the sample from entering and making it difficult to clean.

[0042] An identification assembly 7 is mounted on the sampling assembly. This assembly comprises a connecting sleeve 71, a fixed knob 72, and a floating plate 73. The connecting sleeve 71 is mounted on the transition rod 2, and the fixed knob 72 is mounted on the connecting sleeve 71. The fixed knob 72 is used to secure the connecting sleeve 71, and the floating plate 73 is located at the lower end of the connecting sleeve 71. The height of the identification assembly 7 can be adjusted by adjusting the position of the connecting sleeve 71 and securing it with the fixed knob 72. The floating plate 73 allows the assembly to float on the liquid surface, allowing for better control of the assembly, allowing it to be placed vertically without the need for lifting, significantly saving effort and providing a good identification effect.

[0043] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A multi-channel laminar flow sampling device for food detection, comprising a handle (1), characterized in that: The lower end of the handle (1) is detachably connected to a plurality of sampling assemblies, and the plurality of sampling assemblies are detachably connected in sequence from top to bottom. The sampling assembly comprises a transition rod (2) and a sampler (3), and the sampler (3) is detachably mounted on the lower end of the transition rod (2). A power mechanism is provided in the handle (1), and the power mechanism drives the sampler (3) to perform sampling. The sampler (3) comprises an outer cylinder (31), an inner cylinder (32), an upper connecting shaft (33), a lower connecting shaft (34) and a sealing ring (35). The upper and lower ends of the outer cylinder (31) can be detachably connected to the upper and lower transition rods (2). The front and rear sides of the outer cylinder (31) are both provided with a first feed port (36). The inner cylinder (32) is arranged in the outer cylinder (31). The inner cylinder (32) and the outer cylinder (31) form a rotational fit. The front and rear sides of the inner cylinder (32) are both provided with a second feed port (37) corresponding to the first feed port (36). The upper connecting shaft (33) and the lower connecting shaft (34) are respectively connected to the upper and lower ends of the inner cylinder (32); the upper connecting shaft (33) passes through the upper end of the outer cylinder (31) and is connected to the upper transition rod (2); the lower connecting shaft (34) passes through the lower end of the outer cylinder (31) and is connected to the lower transition rod (2); the sealing ring (35) is fixed on the first feed port (36); the power mechanism drives each inner cylinder (32) to rotate through the transition rod (2), and simultaneously opens the first feed port (36) and the second feed port (37).

2. A multi-channel laminar flow sampling device for food testing according to claim 1, characterized in that: A third feed opening (38) for use with the first feed opening (36) is provided on the right side of the inner cylinder (32).

3. The multi-channel laminar flow sampling device for food detection according to claim 2, characterized in that: The upper end of the upper connecting shaft (33) is provided with a first card slot (39), and the lower end of the lower connecting shaft (34) is provided with a second card slot (310). The transition rod (2) comprises a rotating shaft (21), an outer tube (22), a first joint (23), and a second joint (24). The rotating shaft (21) is inserted into the outer tube (22), and the rotating shaft (21) is rotatably matched with the outer tube (22). The first joint (23) is mounted on the upper end of the rotating shaft (21), and the upper end of the outer tube (22) is detachably connected to the lower end of the handle (1) or the lower end of the outer tube (31). The first joint (23) can be snapped into the power mechanism or the second card slot (310). The second joint (24) is mounted on the lower end of the rotating shaft (21), and the lower end of the outer tube (22) is detachably connected to the upper end of the outer tube (31). The second joint (24) is snapped into the first card slot (39).

4. The multi-channel laminar flow sampling device for food detection according to claim 3, characterized in that: The power mechanism comprises a rotary motor (4), the rotary motor (4) being embedded in the handle (1), a third slot (41) being provided at the lower end of the output shaft of the rotary motor (4), and the third slot (41) being engaged with the first joint (23).

5. The multi-channel laminar flow sampling device for food detection according to claim 4, characterized in that: A control panel (5) is embedded in the upper end of the handle (1), and the rotating motor (4) is electrically connected to the control panel (5).

6. The multi-channel laminar flow sampling device for food testing according to claim 5, characterized in that: The upper end of the outer tube (22) can be threadedly connected to the handle (1) or the lower end of the outer tube (31), and the lower end of the outer tube (22) is threadedly connected to the upper end of the outer tube (31).

7. The multi-channel laminar flow sampling device for food detection according to claim 6, characterized in that: The lower end of the outer cylinder (31) at the lower end is threadedly connected to a protective sleeve (6).

8. The multi-channel laminar flow sampling device for food testing according to claim 7, characterized in that: The sampling component is sleeved with an identification component (7).

9. The multi-channel laminar flow sampling device for food testing according to claim 8, characterized in that: The identification assembly (7) comprises a connecting sleeve (71), a fixing knob (72) and a floating plate (73); the connecting sleeve (71) is sleeved on the transition rod (2); the fixing knob (72) is provided on the connecting sleeve (71); the fixing knob (72) is used to fix the connecting sleeve (71); and the floating plate (73) is provided at the lower end of the connecting sleeve (71).

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