Sampling tool and sampling method for food detection

Abstract

The invention discloses a sampling tool and a sampling method for food detection, and belongs to the technical field of food detection equipment, the tool comprises a storage cylinder, a sampling cylinder, a spherical end and a collection tube; the storage barrel is fixed and communicated with the upper end of the sampling barrel, the spherical end is rotatably mounted in the sampling barrel, a plurality of sampling channels are arranged in the sampling barrel, and a sampling opening is formed in the side part of the sampling barrel; the method for sampling food by using the tool comprises the following steps: communicating the sampling channel with the sampling port; inserting the sampling barrel into the food to be detected; a food sample is sucked into the collecting pipe through the sampling channel and the connecting pipe in sequence; washing the sampling barrel and the outer side surface of the spherical end, and implementing food sampling preparation operation in the next period; according to the food sampling device, multiple times of food sampling operation can be rapidly implemented in a short time, the food detection efficiency is improved, and the food detection accuracy can be ensured due to the fact that samples collected multiple times are placed in a mutually isolated mode and do not interfere with one another.

Description

Technical Field

[0001] The invention relates to the technical field of food testing equipment, in particular to a sampling tool and a sampling method for food testing. Background Art

[0002] Sampling food can detect harmful substances such as microorganisms, pesticide residues, heavy metals and additives in food to assess whether the food meets safety standards; The existing application number is CN201810309704.5, which discloses a solution for sampling food using two openable and closable needle petals, and performs sampling operation on the part of the specified depth inside the food. Specifically: when sampling food, hold the rubber sleeve, which provides convenient conditions for holding the tube body, and the tube body drives the cannula to insert the cannula into the inside of the food. The food contacts the gear ring, and the gear ring is subjected to resistance and stops moving. The cannula continues to move inward, and the gear ring pulls the second slider, and the second slider pulls the pull rod, and the pull rod pulls the needle petal to separate the needle petals, pushes the pull ring, and the pull ring drives the push rod, and the push rod drives the clamp rod, and the clamp rod contacts the second slider to move, and the second slider drives the pull rod to move, and the pull rod drives the needle petals together, and the needle petals wrap the food inside the video on its inside, and the cannula is pulled out to complete the sampling; However, when using the technical solution in the above patent document, since there is a certain gap between the edge of the cannula and the needle flap, during the opening and closing process of the needle flap, food residues will enter the dead corner of the cannula through this gap and remain for a long time, affecting the internal cleanliness of the cannula, thereby causing adverse effects on the results of multiple food sampling and testing; and since the needle flap itself is not easy to disassemble, a long cleaning time is required after completing a food sampling operation, which increases the difficulty of maintaining the sampling tool and the waiting time for subsequent food sampling operations. Therefore, the present application provides a sampling tool and a sampling method for food testing. Summary of the invention

[0003] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a sampling tool for food testing, the outer side of the tool is smooth without dead corners, food residues are not easy to remain, and a plurality of sampling channels isolated from each other are arranged inside, so that multiple food sampling operations can be quickly carried out in a short time, thereby increasing the efficiency of food testing. Since the samples collected multiple times are isolated and placed from each other and do not interfere with each other, the accuracy of food testing can be ensured.

[0004] The technical solution adopted by the present invention to solve the technical problem is: Provided is a sampling tool for food testing, comprising a storage tube, a sampling tube, a spherical end head and a collection tube; the storage tube is fixedly and connectedly arranged at the upper end of the sampling tube, the spherical end head is rotatably installed in the sampling tube, the sampling tube has a plurality of sampling channels built therein, the plurality of sampling channels are isolated from each other and are arranged at equal angles on the inner circumference of the sampling tube, a sampling port is arranged on the side of the sampling tube, and the sampling port can be connected to the sampling channel; The sampling channel is connected to the connecting pipe through the pipe joint on the upper end of the spherical end, and the other end of the connecting pipe is connected to the collection pipe. The upper and lower sides of the connecting pipe are respectively a hard straight pipe and a soft coil.

[0005] Furthermore, the collection tube is detachably installed in the storage cylinder, and the number of the collection tubes is consistent with the number of sampling channels; a piston is slidably installed in the collection tube, and an air vent is provided at the bottom of the collection tube; a magnetic column and a lifting sleeve are slidably installed on the inner and outer sides of the polygonal cylinder respectively, a magnetic end head is installed on the side of the lifting sleeve, and the magnetic end head is connected to the magnetic core in the piston through magnetic adsorption coupling; a telescopic driver for driving the magnetic column to move vertically is installed in the rotating cylinder; the magnetic column and multiple magnetic sheets in the lifting sleeve are connected through magnetic adsorption coupling respectively.

[0006] Furthermore, a rotating cylinder and a polygonal cylinder are detachably fixedly mounted in the middle of the upper end of the spherical end in turn, the top of the polygonal cylinder is connected to the output shaft of the rotating driver, the rotating driver is installed in the end cover, the end cover is installed at the upper end of the storage cylinder, and the end cover is connected to a handle I.

[0007] A method for sampling food using a sampling tool for food testing is also provided, comprising the following steps: Step 1: Control the rotating drum to rotate, drive the spherical end to rotate in the sampling cylinder, so that the designated sampling channel is connected with the sampling port on the side of the sampling cylinder; Step 2: Hold handle Ⅰ and insert the sampling tube into the food to be tested; Step 3: Control the lifting sleeve to move vertically at the outer position of the polygonal cylinder, drive the piston to move downward in the collection tube, so that the food sample is sucked into the collection tube through the sampling channel and the connecting tube in sequence, and the sample collection operation is completed; Step 4: Control the rotation of the drum, rinse the outer side of the sampling tube and the spherical end, and implement the food sampling preparation operation for the next cycle.

[0008] Furthermore, a bent connector is integrally formed at the hard straight tube end on the upper side of the connecting tube, and the bent connectors at the ends of multiple connecting tubes are connected together through a lifting plate, and the end of the bent connector passes downward through the lifting plate and can be plugged into the top of the collection tube, and the lifting plate is vertically slidably installed in the storage tube.

[0009] Furthermore, the magnetic end head is slidably connected to a disassembly handle on the side of the lifting sleeve, a spring I is installed in the disassembly handle, and the spring I is fixedly connected to the magnetic end head. Under the action of the spring I, the magnetic end head always has a tendency to be ejected outward; the upper and lower sides of the magnetic end head are respectively provided with inclined surfaces, and the two inclined surfaces are respectively abutted and matched with the edges of the upper and lower ends of the inner side of the lifting plate.

[0010] Furthermore, an annular seat is fixedly installed on the lower side of the end cover, and a plurality of sliding columns are fixedly installed on the bottom of the annular seat. The sliding columns penetrate the lifting plate and are slidably connected to the lifting plate. A spring II is sleeved on the outer side of the sliding column, and the two ends of the spring II are fixedly connected to the annular seat and the lifting plate respectively.

[0011] Furthermore, inner rings for limiting the moving range of the piston are respectively arranged at the upper and lower ends of the collection tube, and an iron ring is built in the inner ring, and the iron ring is coupled to the magnetic core through magnetic adsorption.

[0012] Furthermore, an outer ring is fixedly installed at the lower end of the outer side of the collection tube, the upper side of the outer ring fits with the end surface of the storage tube, and the lower side of the outer ring fits with the synchronous clamping assembly, and the synchronous clamping assembly is rotatably installed on the outer side of the storage tube.

[0013] Furthermore, the synchronous clamping assembly includes a swivel, the end of the swivel is fitted with a limit ring on the storage tube, a plurality of tightening plates are fixedly installed at equal angular intervals on the side of the swivel, the upper side of the tightening plate is fitted with the lower side of the outer ring, and a handle III is installed on the side of the swivel.

[0014] Furthermore, an internal threaded barrel is fixed and connected to the outer side of the rotating ring, and the handle III is engaged with the internal threaded barrel through a threaded screw, and the end of the handle III close to the storage barrel can fit tightly against the outer side surface of the storage barrel.

[0015] Furthermore, the sampling tube is composed of two semi-cylindrical sleeves spliced ​​in opposite directions, and the two semi-cylindrical sleeves are detachably mounted on both sides of the bottom of the storage tube through fasteners.

[0016] Furthermore, a retaining seat is fixedly installed in the storage cylinder, the rotating cylinder passes through the retaining seat and is rotatably connected to the rotating cylinder, and a plurality of slots for the connecting pipe to pass through are arranged on the circumferential side of the retaining seat, and a limiting ridge is arranged on the inner side of the slot, and the limiting ridge abuts and fits with the outer side surface of the hard straight tube on the upper side of the connecting tube.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The sampling tool for food testing in the example of the present invention controls the piston to move downward in the collection tube, so that the food sample is sucked into the collection tube through the sampling channel and the connecting tube in sequence, thereby completing the sample collection operation; when multiple food sampling operations need to be carried out quickly in a short period of time, the spherical end head is controlled to rotate and the sampling channel is switched. At the same time, the lifting sleeve and the magnetic end head are driven to rotate together, so that the magnetic end head matches the collection tube corresponding to the sampling channel. This makes it necessary to set only a single set of the lifting sleeve and the magnetic end head, and the control of the piston position inside multiple collection tubes can be completed by periodically switching the position of the magnetic end head, and the control efficiency is high.

[0018] 2. The sampling tool for food testing in the example of the present invention has multiple groups of sampling channels, connecting tubes and collection tubes isolated from each other, so that the samples collected multiple times will not be mixed with each other and will not interfere with each other, thereby ensuring the accuracy of food testing; in addition, the structural combination of various components of the equipment is compact, the design is ingenious, and the overall performance is good.

[0019] 3. The sampling tool for food testing in the example of the present invention has a spherical surface because the sampling tube corresponds to the outer contour of the spherical end head, and the outer side is smooth without dead angles. Therefore, in the process of flushing the outer side of the sampling tube and the spherical end head, it is easy to flush the food residue, thereby preventing food residue from remaining on the outer surface of the sampling tube and the spherical end head. The equipment has a fast cleaning speed and high maintenance efficiency, shortens the waiting time for the tool to be used in the next cycle, and increases food testing efficiency.

[0020] 4. After completing multiple food sample sampling operations, the sampling tool for food testing in the example of the present invention pulls out multiple collection tubes. Under the action of spring II, the lifting plate automatically moves downward to the limit position, so that the bent connector passes through this section of the lifting plate downward and is exposed from the installation position of the collection tube, so that a water pipe can be connected to the end of the bent connector later. The continuously flowing water flows through the connecting pipe and the sampling channel to fully clean the parts inside the sampling tool that are in contact with the food sample. The operation is convenient and will not interfere with the cleanliness of the inside of the storage cylinder.

[0021] 5. The sampling tool for food inspection in the example of the present invention has a soft coil on the lower side of the connecting tube, and under normal conditions, the soft coils of multiple connecting tubes are placed between the rotating cylinder and the storage cylinder in a spiral trajectory. The length of the connecting tube itself is greater than the height of the storage cylinder. Therefore, in the process of exposing the end of the bent connector and moving the retaining seat, only the winding gap of the soft coil is shortened, without damaging the structural integrity of the connecting tube, and without pulling the connecting tube to cause the internal food sample to be squeezed out and leaked. The equipment has high stability in use.

[0022] 6. The sampling tool for food testing in the example of the present invention utilizes the clearance between the plug pin and the air hole at the bottom of the collection tube to clamp multiple collection tubes on two placement racks, implement the simultaneous insertion, installation and withdrawal of multiple collection tubes on the storage cylinder, improve the speed of disassembly and assembly of the collection tubes, and increase the efficiency of food testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 A schematic diagram of the overall structure of a food testing sampling tool provided by an embodiment of the present invention; Figure 2 A cross-sectional view of a portion of a sampling tool for food testing provided by an embodiment of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 A cross-sectional view of a collection tube provided by an embodiment of the present invention; Figure 5 A schematic diagram of the structure of a polygonal cylinder, a lifting sleeve and a magnetic end head provided in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a lifting sleeve, a magnetic sheet and a disassembly handle provided in an embodiment of the present invention; Figure 7 A schematic diagram of the structure of a magnetic terminal, a retaining seat and a bent connector provided in an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a storage tube, a limiting ring, a sampling tube and a spherical end provided in an embodiment of the present invention; Fig. 9 A schematic diagram of the structure of a spherical end cap, a connecting pipe and a retaining seat provided in an embodiment of the present invention; Fig.10 For the present invention Fig. 9 The enlarged view of point B in the middle; Fig.11 A schematic diagram of the structure of a bending connector, a lifting plate, a sliding column and an annular seat provided in an embodiment of the present invention; Fig.12 A schematic diagram of the structure of a collection tube and a placement rack provided in an embodiment of the present invention; Fig.13 A schematic diagram of the structure of a placement rack, a plug pin and a handle II provided in an embodiment of the present invention; Fig.14 A schematic diagram of the structure of a storage cylinder, an outer ring and a tightening sheet provided in an embodiment of the present invention; Fig.15This is a schematic structural diagram of a swivel and handle III provided in an embodiment of the present invention.

[0024] In the figure: 11, storage cylinder, 111, limit ring, 12, sampling cylinder, 121, scraping edge, 13, end cover, 14, handle I, 21, spherical end, 22, sampling channel, 23, rotating cylinder, 24, polygonal cylinder, 25, rotating drive, 26, lifting sleeve, 261, magnetic sheet, 262, disassembly handle, 27, magnetic end, 28, magnetic column, 29, telescopic drive, 31, connecting pipe, 32, holding seat, 33 , limit ribs, 34, bending connector, 35, lifting plate, 36, sealing ring, 37, sliding column, 38, annular seat, 39, spring II, 41, collection tube, 411, air vent, 42, inner ring, 43, outer ring, 44, piston, 45, magnetic core, 51, placement rack, 52, plug pin, 53, handle II, 54, plug, 55, socket, 61, swivel, 62, tightening plate, 63, internal threaded cylinder, 64, handle III. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0027] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0031] Embodiment 1: like Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, this embodiment provides a sampling tool for food testing, including a storage tube 11, a sampling tube 12, a spherical end head 21 and a collection tube 41; the storage tube 11 is fixed and connected to the upper end of the sampling tube 12, the spherical end head 21 is rotatably installed in the sampling tube 12, the outer side surface of the spherical end head 21 is in contact with the inner side surface of the sampling tube 12, the sampling tube 12 has a plurality of sampling channels 22 built in, the plurality of sampling channels 22 are isolated from each other and are arranged at equal angles on the inner circumference of the sampling tube 12, and a sampling port is provided on the side of the sampling tube 12, which can be connected to the sampling channel 22.

[0032] like Fig. 9 and Fig.10 As shown, the sampling channel 22 is connected to the connecting tube 31 through the pipe joint at the upper end of the spherical end 21, and the other end of the connecting tube 31 is connected to the collection tube 41. The upper and lower sides of the connecting tube 31 are respectively a hard straight tube and a soft coil.

[0033] When using the sampling tool of the present application to perform rapid and multiple sampling operations, it is necessary to control the spherical end 21 to rotate 360 ​​degrees, and the lower side of the connecting tube 31 is a soft coil, so during the rotation of the spherical end 21, it will not affect the smooth guidance of the connecting tube 31 to the food sample.

[0034] like Figure 3 , Figure 4 and Figure 5As shown, the collection tube 41 is detachably installed in the storage tube 11, and the number of the collection tubes 41 is consistent with the number of the sampling channels 22; a piston 44 is slidably installed in the collection tube 41, and a vent hole 411 is provided at the bottom of the collection tube 41; a magnetic column 28 and a lifting sleeve 26 are slidably installed on the inner and outer sides of the polygonal tube 24, respectively, a magnetic end 27 is installed on the side of the lifting sleeve 26, and the magnetic end 27 is connected to the magnetic core 45 in the piston 44 through magnetic adsorption coupling; a telescopic driver 29 for driving the magnetic column 28 to move vertically is installed in the rotating cylinder 23; the magnetic column 28 and a plurality of magnetic sheets 261 in the lifting sleeve 26 are respectively connected through magnetic adsorption coupling; The telescopic driver 29 is started to drive the magnetic column 28 to move inside the polygonal tube 24. The lifting sleeve 26 is driven to move synchronously by the magnetic attraction between the magnetic column 28 and the magnetic sheet 261. The piston 44 is moved in the collection tube 41 by the magnetic attraction between the magnetic end 27 and the magnetic core 45. Air suction is performed on the food sample, so that the food sample is sucked into the collection tube 41 through the sampling channel 22 and the connecting tube 31 in sequence.

[0035] In order to ensure that the collection tube 41 is stably placed in a vertical position in the storage tube 11, Figure 6 As shown, an arc surface is provided at the end of the magnetic end 27 away from the lifting sleeve 26, and the gap between the magnetic end 27 and the outer side surface of the collection tube 41 is eliminated by the abutment between the arc surface and the outer side surface of the collection tube 41, so that the magnetic attraction between the magnetic end 27 and the magnetic core 45 will not cause the collection tube 41 to tilt.

[0036] like Figure 3 and Figure 5 As shown, a rotating cylinder 23 and a polygonal cylinder 24 are detachably fixedly mounted in the middle of the upper end of the spherical end 21 in sequence, the top of the polygonal cylinder 24 is connected to the output shaft of the rotating driver 25, the rotating driver 25 is mounted in the end cover 13, the end cover 13 is mounted on the upper end of the storage cylinder 11, and the end cover 13 is connected to a handle Ⅰ14.

[0037] The method for sampling food using the food testing sampling tool of the present application comprises the following steps: Step 1: Start the rotary driver 25 to control the rotation of the rotating drum 23, driving the spherical end 21 to rotate in the sampling drum 12, so that the designated sampling channel 22 is connected to the sampling port on the side of the sampling drum 12; Step 2: Hold the handle Ⅰ14 and insert the sampling tube 12 into the food to be tested; Step 3: Start the telescopic driver 29 to control the lifting sleeve 26 to move vertically outside the polygonal cylinder 24, driving the piston 44 to move downward in the collection tube 41, so that the food sample is sucked into the collection tube 41 through the sampling channel 22 and the connecting tube 31 in sequence, completing the sample collection operation; Step 4: Control the rotating drum 23 to rotate, and use flowing water to rinse the outer side surfaces of the sampling tube 12 and the spherical end 21 to implement the next cycle of food sampling preparation operations.

[0038] In step one, while controlling the rotation of the spherical end 21 to switch the sampling channel 22, the lifting sleeve 26 and the magnetic end 27 can be driven to rotate together, so that the magnetic end 27 matches the collection tube 41 corresponding to the sampling channel 22. This makes it necessary to set up only a single set of the lifting sleeve 26 and the magnetic end 27. By periodically switching the position of the magnetic end 27, the position of the piston 44 inside a plurality of collection tubes 41 can be controlled, and the control efficiency is high.

[0039] In step three, since the multiple groups of sampling channels 22, connecting tubes 31 and collection tubes 41 are isolated from each other, the samples collected multiple times will not be mixed with each other and will not interfere with each other, thereby ensuring the accuracy of food testing; in addition, the structural combination of the various components of the equipment is compact, the design is ingenious, and the overall performance is good.

[0040] In step 4, since the sampling tube 12 corresponds to the outer contour of the spherical end head 21, both have a spherical surface, and the outer side is smooth without dead angles, it is easy to rinse the food residue during the process of rinsing the outer side surfaces of the sampling tube 12 and the spherical end head 21, thereby preventing food residue from remaining on the outer surfaces of the sampling tube 12 and the spherical end head 21. The equipment has a fast cleaning speed and high maintenance efficiency, shortens the waiting time for tool use in the next cycle, and increases food detection efficiency.

[0041] like Figure 8 As shown, the sampling tube 12 is composed of two semi-cylindrical sleeves spliced ​​in opposite directions, and the two semi-cylindrical sleeves are detachably mounted on both sides of the bottom of the storage tube 11 through fasteners.

[0042] In order to keep the inside of the sampling tube 12 clean, Figure 8 As shown, a scraping edge 121 is provided at the edge of the sampling port on the side of the sampling barrel 12; when it is necessary to switch the designated sampling channel 22, the scraping edge 121 is used to scrape off the food residue remaining on the surface of the spherical end head 21 to prevent the food residue from entering the inner side of the sampling barrel 12 and hindering the smooth rotation of the spherical end head 21; in addition, in the process of switching multiple sampling channels 22, the rotation direction of the spherical end head 21 is always in one direction, so that the food residue remaining on the surface of the spherical end head 21 will not have an adverse effect on the subsequent food sampling.

[0043] Two inner rings 42 are installed inside the collection tube 41 to limit the range of motion of the piston 44, so that the range of motion of the piston 44 is as follows: Figure 3 As shown, the lifting and lowering movement range of the lifting sleeve 26 outside the polygonal tube 24 is consistent, ensuring effective control of the piston 44; in addition, an iron ring is built into the inner ring 42, and the iron ring is connected to the magnetic core 45 through magnetic adsorption coupling, so that the piston 44 is adsorbed and maintained on the upper top of the collection tube 41 in the initial state.

[0044] In this embodiment, a rubber sleeve is provided on the outer side of the bottom of the collection tube 41. The rubber sleeve is thin at the top and thick at the bottom. Combined with the clearance fit and the elastic deformation of the rubber sleeve, the collection tube 41 is clamped on the storage tube 11 to complete the installation operation of the collection tube 41.

[0045] Embodiment 2: The features of this embodiment that are the same as those of the first embodiment are not described in detail. The difference between this embodiment and the first embodiment is that: Figure 3 , Figure 7 and Fig. 9 As shown, in this embodiment, the hard straight tube end portion on the upper side of the connecting tube 31 is integrally formed with a bent connector 34, and the bent connectors 34 at the ends of multiple connecting tubes 31 are connected together through a lifting plate 35, and multiple sealing rings 36 are embedded and installed on the lower side of the lifting plate 35. The sealing ring 36 is made of elastic material, and the top of the collection tube 41 is in contact with the lower side of the sealing ring 36.

[0046] like Fig.11 As shown, the end of the bent connector 34 passes through the lifting plate 35 downward and can be plugged into the top of the collection tube 41. The lifting plate 35 is vertically slidably installed in the storage cylinder 11. An annular seat 38 is fixedly installed on the lower side of the end cover 13. A plurality of slide posts 37 are fixedly installed on the bottom of the annular seat 38. The slide posts 37 pass through the lifting plate 35 and are slidably connected to the lifting plate 35. A spring II 39 is sleeved on the outer side of the slide post 37. The two ends of the spring II 39 are fixedly connected to the annular seat 38 and the lifting plate 35 respectively. During the process of installing the collection tube 41 into the storage cylinder 11, as the collection tube 41 is inserted, the lifting plate 35 is pushed upward, and the spring II 39 accumulates force and is compressed. During this process, the top of the collection tube 41 fits tightly against the lower side of the sealing ring 36 to seal the upper side of the collection tube 41.

[0047] After completing multiple food sample sampling operations, multiple collection tubes 41 are pulled out, and under the action of spring II 39, the lifting plate 35 automatically moves downward to the limit position, so that the bent connector 34 passes through this section of the lifting plate 35 downward, Fig.14As shown, the installation position of the collection tube 41 is exposed, so that a water pipe can be connected to the end of the bent connector 34 later, and the continuously flowing water flows through the connecting tube 31 and the sampling channel 22, so as to fully clean the parts of the sampling tool of the present application that are in contact with the food sample; When performing the cleaning operation, the sampling tube 12 can be removed from the bottom of the storage tube 11 to completely expose the spherical end 21 , thereby increasing the cleaning and maintenance efficiency of the connecting tube 31 and the sampling channel 22 .

[0048] In order to prevent the lifting plate 35 from pulling the connection between the bent connector 34 and the lifting plate 35 during the lifting process, Figure 3 , Figure 7 , Fig. 9 and Fig.10 As shown, a retaining seat 32 is fixedly installed in the storage cylinder 11, and the rotating cylinder 23 passes through the retaining seat 32 and is rotatably connected to the rotating cylinder 23, and a plurality of slots for the connecting tube 31 to pass through are arranged on the circumferential side of the retaining seat 32, and a limiting rib 33 is arranged on the inner side of the slot, and the limiting rib 33 abuts and fits with the outer side surface of the hard straight tube on the upper side of the connecting tube 31, so that during the lifting process of the lifting plate 35, the hard straight tube on the upper side of the connecting tube 31 is lifted and lowered in a vertical state in the retaining seat 32, thereby avoiding pulling on the connection between the bent connector 34 and the lifting plate 35.

[0049] The outer side surface of the bent connector 34 that passes through the lifting plate 35 downward can fit with the inner side surface of the inner ring 42 , which can effectively prevent the food sample from leaking out of the gap between the collection tube 41 and the lifting plate 35 .

[0050] In the present embodiment, since the lower side of the connecting tube 31 is a soft coil, and under normal conditions, the soft coils of the multiple connecting tubes 31 are placed in a spiral trajectory between the outer side of the rotating drum 23 and the inner side of the storage cylinder 11, and their own length is longer than the height of the storage cylinder 11, so that when the annular seat 38 drives the hard straight tube on the upper side of the connecting tube 31 to move vertically, only the coiling gap of the soft coil is shortened, and the structural integrity of the connecting tube 31 will not be damaged, and the connecting tube 31 will not be pulled to cause the internal food sample to be squeezed out and leaked, and the use stability is high.

[0051] Embodiment three: The features common to the second embodiment of this embodiment are not described in detail. The difference between the second embodiment of this embodiment and the second embodiment is that: Figure 6As shown, in this embodiment, the magnetic end head 27 is slidably installed in the disassembly handle 262 on the side of the lifting sleeve 26, and a spring I is installed in the disassembly handle 262. The other end of the spring I is fixedly connected to the magnetic end head 27. Under the action of the spring I, the magnetic end head 27 always has a tendency to be pushed outward; the upper and lower sides of the magnetic end head 27 are respectively provided with inclined surfaces, and the two inclined surfaces are respectively abutted against the edges of the upper and lower ends of the inner side of the lifting disk 35, so that the magnetic end head 27 can smoothly cross the lifting disk 35 and then be re-fitted with the outer wall of the designated collection tube 41 to maintain the stable adsorption coupling connection between the magnetic end head 27 and the magnetic core 45 inside the piston 44.

[0052] like Figure 7 As shown, the bent connector 34 is arranged at the top of the hard straight tube on the upper side of the connecting tube 31, so that the portion of the connecting tube 31 close to the magnetic end 27 is not easily deformed, and the vertical movement of the magnetic end 27 is not hindered. When it is necessary to switch the sampling channel 22 to implement the next cycle of sampling operation, the magnetic end 27 is raised to the upper side of the bent connector 34, and then the rotating drum 23 and the magnetic end 27 are controlled to rotate together, and the sampling channel 22 and the collection tube 41 corresponding to the magnetic end 27 are switched; The maximum position to which the magnetic end 27 can be raised is as follows: Figure 3 As shown, the space of the piston 44 between the upper side of the bending connector 34 and the end cover 13 allows the lifting sleeve 26 and the magnetic end head 27 to rotate together with the rotating cylinder 23 and the polygonal cylinder 24, thereby avoiding collision between the magnetic end head 27 and the bending connector 34; during this process, the inclined surface on the magnetic end head 27 abuts against the inner edge of the lifting plate 35, driving the magnetic end head 27 to move horizontally in the disassembly handle 262, thereby realizing automatic telescopic control.

[0053] Embodiment 4: The features of this embodiment that are the same as those of the first embodiment are not described in detail. The difference between this embodiment and the first embodiment is that: Figure 8 , Fig.14 and Fig.15 As shown, in this embodiment, an outer ring 43 is fixedly installed at the lower end of the outer side of the collection tube 41, the upper side of the outer ring 43 is in contact with the end surface of the storage tube 11, and the lower side of the outer ring 43 is in contact with the synchronous clamping assembly, and the synchronous clamping assembly is rotatably installed on the outer side of the storage tube 11.

[0054] like Fig.15As shown, the synchronous clamping assembly includes a swivel 61, the end of the swivel 61 is fitted with a limit ring 111 on the storage tube 11, and a plurality of tightening plates 62 are fixedly installed at equal angular intervals on the side of the swivel 61, and the upper side surface of the tightening plate 62 is fitted with the lower side surface of the outer ring 43. A handle III 64 for controlling the rotation of the swivel 61 on the outside of the storage tube 11 is installed on the side of the swivel 61, and by toggling the handle III 64, the positions of the plurality of collection tubes 41 on the storage tube 11 are synchronously locked.

[0055] Compared with the method of using a rubber sleeve to lock the collection tube 41 in the storage tube 11 in the first embodiment, the above scheme of this embodiment makes the collection tube 41 in this embodiment easier to insert and remove, and has a better labor-saving effect.

[0056] In order to facilitate the locking of the rotating ring 61 outside the storage tube 11, as shown in FIG. Fig.15 As shown, an internal threaded tube 63 is fixed and connected to the outside of the swivel 61, so that the handle III 64 is engaged with the internal threaded tube 63 through a threaded engagement, and the handle III 64 is held and rotated so that the end of the handle III 64 close to the storage tube 11 is pressed against the outer side surface of the storage tube 11, thereby quickly locking the position of the swivel 61 outside the storage tube 11.

[0057] Embodiment five: The features of this embodiment that are the same as those of the first embodiment are not described in detail. The difference between this embodiment and the first embodiment is that: Figure 1 , Figure 3 , Figure 4 , Fig.12 and Fig.13 As shown, in this embodiment, a synchronous disassembly assembly component is added, and the disassembly and assembly operation of the multiple collection tubes 41 on the storage cylinder 11 is performed through the synchronous disassembly and assembly component; Specifically: the synchronous disassembly and assembly component includes two placement racks 51, and the ends of the two placement racks 51 that are close to each other are respectively provided with plugs 54 and sockets 55 that can be plugged into each other, and the ends of the two placement racks 51 that are away from each other are respectively provided with handles II 53. A plurality of plug pins 52 are fixedly installed on the placement racks 51. By utilizing the clearance between the plug pins 52 and the air vents 411 at the bottom of the collection tube 41, the plurality of collection tubes 41 are clamped on the two placement racks 51, and the plurality of collection tubes 41 are synchronously inserted, installed, and withdrawn from the storage cylinder 11, thereby improving the disassembly and assembly speed of the collection tube 41 and increasing the food detection efficiency.

[0058] After the collection tube 41 is inserted and installed in the storage tube 11, the synchronous clamping assembly is used to lock the positions of the multiple collection tubes 41 on the storage tube 11, and then the two placement racks 51 are removed, so that Figure 4The middle air hole 411 remains open. As the piston 44 moves downward in the collection tube 41, the food sample is sucked into the collection tube 41 through the sampling channel 22 and the connecting tube 31, and the air originally remaining in the collection tube 41 is discharged from the air hole 411 to maintain a constant air pressure inside the collection tube 41.

[0059] In the present application, the magnetic sheet 261, the magnetic end 27 and the magnetic core 45 can use neodymium magnets or other types of magnetic materials that can be purchased on the market; the telescopic drive 29 uses a linear electric cylinder or hydraulic cylinder that can be purchased on the market; the rotation drive 25 uses a stepper motor or servo motor that can be purchased on the market.

[0060] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

[0061] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A sampling tool for food testing, comprising a sampling tube (12), characterized in that: A spherical end head (21) with a built-in sampling channel (22) is rotatably mounted in the sampling barrel (12); a sampling port is provided on the side of the sampling barrel (12), and the sampling port can be connected to the sampling channel (22); a plurality of sampling channels (22) are provided, and the plurality of sampling channels (22) are isolated from each other and arranged at equal angles on the inner circumference of the sampling barrel (12); The sampling channel (22) is connected to the connecting pipe (31) through a pipe joint at the upper end of the spherical end (21); the other end of the connecting pipe (31) is connected to the collection pipe (41); the upper and lower sides of the connecting pipe (31) are respectively a hard straight pipe and a soft coil; The collection tube (41) is detachably mounted in the storage tube (11), the storage tube (11) is fixed and connected to the upper end of the sampling tube (12), the number of the collection tubes (41) is consistent with the number of the sampling channels (22), a piston (44) is slidably mounted in the collection tube (41), and a vent hole (411) is provided at the bottom of the collection tube (41); A rotating cylinder (23) and a polygonal cylinder (24) are detachably fixedly mounted in the middle of the upper end of the spherical end head (21), the top of the polygonal cylinder (24) is connected to the output shaft of the rotating driver (25), the rotating driver (25) is mounted in the end cover (13), the end cover (13) is mounted on the upper end of the storage cylinder (11), and the end cover (13) is connected to a handle I (14); A magnetic column (28) and a lifting sleeve (26) are slidably mounted on the inner and outer sides of the polygonal cylinder (24), respectively; a magnetic end head (27) is mounted on the side of the lifting sleeve (26); the magnetic end head (27) is connected to a magnetic core (45) in a piston (44) by magnetic adsorption coupling; a telescopic driver (29) for driving the magnetic column (28) to move vertically is mounted in the rotating cylinder (23); the magnetic column (28) and a plurality of magnetic sheets (261) in the lifting sleeve (26) are connected to each other by magnetic adsorption coupling.

2. The food testing sampling tool according to claim 1, characterized in that: The rigid straight tube end portion on the upper side of the connecting tube (31) is integrally formed with a bent connector (34); the bent connectors (34) at the ends of a plurality of connecting tubes (31) are connected together via a lifting plate (35); the ends of the bent connectors (34) pass through the lifting plate (35) downward and can be plugged into the top of the collection tube (41); the lifting plate (35) is vertically slidably installed in the storage cylinder (11); The magnetic end head (27) is slidably connected to a disassembly handle (262) on the side of the lifting sleeve (26), and a spring I is installed in the disassembly handle (262). The spring I is fixedly connected to the magnetic end head (27). Under the action of the spring I, the magnetic end head (27) always has a tendency to be ejected outward; the upper and lower sides of the magnetic end head (27) are respectively provided with inclined surfaces, and the two inclined surfaces are respectively abutted against the edges of the upper and lower ends of the inner side of the lifting plate (35).

3. The food testing sampling tool according to claim 2, characterized in that: An annular seat (38) is fixedly mounted on the lower side of the end cover (13), a plurality of slide posts (37) are fixedly mounted on the bottom of the annular seat (38), the slide posts (37) penetrate the lifting plate (35) and are slidably connected to the lifting plate (35), a spring II (39) is sleeved and mounted on the outer side of the slide posts (37), and two ends of the spring II (39) are fixedly connected to the annular seat (38) and the lifting plate (35), respectively.

4. The food testing sampling tool according to claim 1, characterized in that: Inner rings (42) for limiting the movement range of the piston (44) are respectively arranged at the upper and lower ends of the collection tube (41); an iron ring is built into the inner ring (42); the iron ring is coupled to the magnetic core (45) through magnetic adsorption.

5. The food testing sampling tool according to claim 1, characterized in that: An outer ring (43) is fixedly mounted on the lower end of the outer side of the collection tube (41); the upper side of the outer ring (43) is in contact with the end surface of the storage tube (11); the lower side of the outer ring (43) is in contact with the synchronous clamping assembly; and the synchronous clamping assembly is rotatably mounted on the outer side of the storage tube (11).

6. The food testing sampling tool according to claim 5, characterized in that: The synchronous clamping assembly comprises a swivel (61), the end of the swivel (61) is fitted with a limit ring (111) on the storage tube (11), a plurality of tightening plates (62) are fixedly mounted at equal angle intervals on the side of the swivel (61), the upper side of the tightening plates (62) is fitted with the lower side of the outer ring (43), and a handle III (64) is mounted on the side of the swivel (61).

7. The food testing sampling tool according to claim 6, characterized in that: An internal threaded tube (63) is fixedly disposed on the outer side of the rotating ring (61) and is in communication therewith. The handle III (64) is engaged with the internal threaded tube (63) via a threaded engagement. An end of the handle III (64) close to the storage tube (11) can be tightly fitted against the outer side surface of the storage tube (11).

8. The food testing sampling tool according to claim 1, characterized in that: The sampling tube (12) is composed of two semi-cylindrical sleeves spliced ​​in opposite directions, and the two semi-cylindrical sleeves are detachably mounted on both sides of the bottom of the storage tube (11) via fasteners.

9. The food testing sampling tool according to claim 1, characterized in that: A retaining seat (32) is fixedly installed in the storage cylinder (11); the rotating cylinder (23) passes through the retaining seat (32) and is rotatably connected to the rotating cylinder (23); a plurality of slots for the connecting tube (31) to pass through are arranged on the peripheral side of the retaining seat (32); limiting ridges (33) are arranged on the inner side surfaces of the slots; the limiting ridges (33) are in contact with and fit the outer side surface of the hard straight tube on the upper side of the connecting tube (31).

10. A method for sampling food using the sampling tool for food testing according to claim 1, characterized in that: The following steps are involved: Step 1: Control the rotating drum (23) to rotate, driving the spherical end (21) to rotate in the sampling barrel (12), so that the designated sampling channel (22) is connected to the sampling port on the side of the sampling barrel (12); Step 2: Holding the handle I (14), insert the sampling tube (12) into the interior of the food to be tested; Step 3: Controlling the lifting sleeve (26) to move vertically at the outer position of the polygonal cylinder (24), driving the piston (44) to move downward in the collection tube (41), so that the food sample is sucked into the collection tube (41) through the sampling channel (22) and the connecting tube (31) in sequence, thereby completing the sample collection operation; Step 4: Control the rotating drum (23) to rotate, and rinse the outer side surfaces of the sampling tube (12) and the spherical end (21), and implement the food sampling preparation operation for the next cycle.

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