Layered sampling device for food inspection and detection

Abstract

The invention relates to the technical field of food sampling devices, in particular to a stratified sampling device for food inspection and detection. The device comprises a sampler, one end of the sampler is fixedly connected with a sampling head, a plurality of sampling grooves are formed in the sampler, the sampler is provided with an adjusting assembly by means of the sampling grooves, the adjusting assembly comprises a guide rod and a plurality of adjusting discs, the adjusting discs are located in the sampling grooves and are driven by the guide rod, and the adjusting discs are arranged in the sampling grooves. And a fixing mechanism for fixing the guide rod is arranged at one end of the guide rod. According to the food sampling device, the effect of adjusting the size of the internal space of the sampling groove is achieved through the adjusting assembly, the sampler can conveniently take out different numbers of food samples, the practicability of the sampler is improved, the effect of positioning the sampler is achieved through the positioning assembly, the situation that when the sampler samples food, the position of the sampler shifts is avoided, and the sampling efficiency is improved. Therefore, the sampling accuracy is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of food sampling devices, and in particular to a layered sampling device for food inspection and testing. Background Art

[0002] A stratified sampling device for food inspection and testing refers to a tool or device specially designed to extract samples from a food batch in layers. In the food industry, in order to ensure that the sample can represent the average quality of the entire batch, it is usually necessary to sample from different layers (such as the upper, middle and lower layers). This stratified sampling method is particularly important for foods whose properties may vary depending on the location.

[0003] In the prior art, when a sampling device is used to sample food, the sampling device needs to be inserted into the interior of the sampled food, and different layers of food enter sampling spaces in different areas respectively, thereby achieving the effect of stratified sampling. However, the spatial size of the sampling area is fixed and the number of samples cannot be adjusted, thereby reducing the practicality of the sampling device. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that the spatial size of the sampling area is fixed and the number of samples cannot be adjusted, thereby reducing the practicality of the sampling equipment, and to propose a layered sampling device for food inspection and testing.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a stratified sampling device for food inspection and detection, comprising a sampler, a sampling head is fixedly connected to one end of the sampler, a plurality of sampling slots are opened inside the sampler, the sampler is provided with an adjustment component by means of the sampling slots, the adjustment component comprises a guide rod and a plurality of adjustment disks, wherein the adjustment disks are located inside the sampling slots and are driven by the guide rods, a fixing mechanism for fixing the guide rods is provided at one end of the guide rods, a rotating mechanism is provided at the sampling slots corresponding to the sampler, the rotating mechanism comprises a plurality of protective plates, wherein the plurality of protective plates respectively cover the sampling slots of the sampler, a driving mechanism for rotating the protective plates is provided inside the sampler, a positioning component for fixing the sampler is provided inside the sampling head, and the positioning component comprises two mutually symmetrical positioning plates.

[0006] The effects achieved by the above components are as follows: when it is necessary to use a sampler to sample food, the staff first inserts the sampler into the food pile. After the sampler moves to the designated place, the staff adjusts the position of the adjustment disk through the guide rod, and the size of the sampling slot is changed. At this time, the driving mechanism rotates with the protective plate in the rotating mechanism, and the sampling slot is exposed. The food enters the sampling slot, and the positioning plate in the positioning assembly is inserted into the food, thereby achieving the effect of positioning the sampler to prevent the sampler from shaking during sampling. After the food is sampled, the staff loosens the guide rod, and the fixing mechanism fixes the guide rod. The protective plate on the rotating device covers the sampling slot again, and the positioning plate on the sampling head re-enters the interior of the sampling head. Finally, the staff pulls the sampler out of the food.

[0007] Preferably, the adjustment assembly also includes a rotating tube, wherein the rotating tube rotates inside the sampler, the guide rod slides inside the rotating tube, and a plurality of first pull ropes are wrapped around the arc surface of the rotating tube, wherein one end of the first pull rope is fixedly connected to the adjustment disk, and a first spring is fixedly connected to one side of the adjustment disk, wherein one end of the first spring is fixedly connected to the inner wall of the sampling slot.

[0008] The effects achieved by the above components are as follows: when it is necessary to sample food, the staff drives the rotating tube to rotate through the guide rod, the first pull rope is wound, the first pull rope moves the adjusting disk inside the sampling slot, the first spring contracts, and the space size of the sampling slot changes. When the adjusting disk moves to the appropriate position, the sampling slot extracts a certain amount of food, and the staff stops rotating the guide rod. When it is necessary to take out the food in the sampling slot, the staff rotates the guide rod in the opposite direction, the rotating tube loosens the winding of the first pull rope, and under the action of the first spring reset elastic force, the adjusting disk moves toward the opening of the sampling slot, and the food in the sampling slot is taken out. The effect of adjusting the internal space size of the sampling slot is achieved through the adjustment component, thereby facilitating the sampler to take out different quantities of food samples, thereby improving the practicality of the sampler.

[0009] Preferably, the fixing mechanism includes an operating disk, which is fixedly connected to one end of the guide rod located outside the sampler, an operating block is fixedly connected to one side of the operating disk, and an insertion rod is fixedly connected to one side of the operating disk, and the sampler is evenly provided with a plurality of holes corresponding to the insertion rod, wherein the plurality of holes are distributed in a circle and are adapted to the size of the insertion rod.

[0010] The effect achieved by the above components is: when the guide rod needs to be used, the staff first pulls the guide rod through the operating block, and the guide rod moves with the operating disk away from the sampler, and the insertion rod on the operating disk moves away from the socket. At this time, the staff rotates the operating block again, and the guide rod rotates with the rotating tube. After rotating to the appropriate place, the staff pushes the operating block, and the insertion rod on the operating disk is inserted into the socket of the sampler, thereby achieving the effect of fixing the guide rod.

[0011] Preferably, the rotating mechanism also includes a cover plate, wherein the cover plate is fixedly connected to the opening of the sampling slot of the sampler, and a reserved hole is opened in the cover plate corresponding to the sampling slot, and the cover plate is rotatably connected to a rotating rod inside, and the arc surface of the rotating rod is fixedly connected to a plurality of protective plates, wherein the protective plates are located inside the reserved holes and are adapted to the sizes of the reserved holes, and the arc surface of the rotating rod is sleeved with a plurality of first coil springs, wherein one end of the first coil spring is fixedly connected to the inner wall of the cover plate.

[0012] The effect achieved by the above components is: when the sampler samples food, the driving mechanism rotates the rotating rod, and the protective plate on the rotating rod rotates inside the reserved hole of the cover plate, and the first coil spring is deformed. When the sampler completes sampling of the food, under the action of the reset elastic force of the first coil spring, the rotating rod rotates with the protective plate, and the protective plate covers the reserved hole of the cover plate again. The rotating device achieves the effect of protecting the food inside the sampling slot in the sampler to prevent the food from falling from the sampling slot.

[0013] Preferably, the driving mechanism includes a belt, which is arranged inside the sampler, wherein one of the disks of the belt is arranged on the arc surface of the rotating cylinder, one side of the other disk of the belt is fixedly connected to a turntable, one side of the turntable is fixedly connected to a limiting buckle, the arc surface of the limiting buckle is covered with a limiting frame, the interior of the sampler is fixedly connected with an air pump and a fixed cylinder, wherein the air outlet end of the air pump is located inside the fixed cylinder, the interior of the air pump is slidably connected with a first piston, wherein the first piston is fixedly connected to the limiting frame by means of a support rod, an air inlet is provided at the top of the air pump, an air outlet is provided at the bottom of the fixed cylinder, wherein the size of the air outlet is relatively small, a pressure relief hole is provided on the arc surface of the fixed cylinder, a second piston is slidably connected to the interior of the fixed cylinder, one side of the second piston is fixedly connected to a push rod, and the arc surface of the rotating rod is fixedly connected to a rotating plate, wherein the top plate is located directly below the rotating plate.

[0014] The effects achieved by the above components are as follows: when the rotating tube rotates, the rotating tube drives the limit buckle of the turntable to rotate through the belt, and the limit buckle moves up and down with the limit frame, the support rod and the first piston. When the first piston moves downward, the space inside the air pump becomes larger, and air enters the interior of the air pump through the air inlet; when the first piston moves upward, the internal space of the air pump becomes smaller, and the air inside the air pump enters the fixed cylinder. With the continuous reciprocating motion of the first piston, the air pump will continuously transport air to the fixed cylinder. Since the air outlet of the fixed cylinder is small, the outflowing air is less than the transported air, the air pressure inside the fixed cylinder increases, and the second The piston moves upward with the push rod, and finally the push rod rotates with the rotating plate and the rotating rod, and the rotating rod rotates with the protective plate. When the second piston moves to the position of the pressure relief hole, the pressure relief hole is exposed, thereby accelerating the output of air inside the fixed cylinder and preventing the second piston from moving out of the fixed cylinder. When the rotating cylinder stops rotating, the air pump stops supplying air to the fixed cylinder, and the air outlet at the bottom of the fixed cylinder will slowly deliver the air inside the fixed cylinder. The second piston returns to its original position with the push rod, and the push rod releases the ejection of the rotating plate, which facilitates the rotation of the rotating rod through the driving mechanism, so that the protective plate is opened when food is sampled, and the protective plate is closed when the sampling is completed.

[0015] Preferably, one end of the push rod is fixedly connected to a U-shaped plate, and two arms of the U-shaped plate are rotatably connected to the same rotating member, wherein the arc surface of the rotating member is in contact with the rotating plate.

[0016] The effect achieved by the above components is that when the push rod rotates with the rotating plate, the rotating member on the U-shaped plate rotates with the rotating plate, thereby reducing the friction between the rotating plate and the push rod, making it easier for the push rod to rotate with the rotating plate.

[0017] Preferably, two mutually symmetrical triangular plates are fixedly connected to one side of the limit frame, wherein one side of the triangular plates is fixedly connected to the arc surface of the support rod.

[0018] The effect achieved by the above components is: the contact area between the limit frame and the support rod is increased by setting the triangular plate, thereby improving the stability between the support rod and the limit frame.

[0019] Preferably, the positioning assembly also includes a rectangular plate, which is located inside the sampling head, wherein the rectangular plate is located at one end of the guide rod and is rotatably connected to the guide rod, and a second pull rope is fixedly connected to both sides of the rectangular plate, wherein one end of the second pull rope is fixedly connected to the bottom of the positioning plate.

[0020] The effect achieved by the above components is: when the staff pulls the guide rod, the guide rod moves the rectangular plate to the side away from the sampling head, and the second pull rope moves the positioning plate, and finally the positioning plate moves out of the sampling head and inserts into the interior of the food pile. The positioning component achieves the effect of positioning the sampler, thereby preventing the sampler from shifting when sampling food, thereby affecting the accuracy of sampling.

[0021] Preferably, two mutually symmetrical telescopic rods are fixedly connected to one side of the rectangular plate, wherein one end of the telescopic rod is fixedly connected to the inner wall of the sampler.

[0022] The effect achieved by the above components is: by setting the telescopic rod, the moving direction of the rectangular plate is restricted, the shaking of the rectangular plate is avoided, and the stability of the movement of the rectangular plate is improved.

[0023] Preferably, the positioning plate is a hollow plate, and the positioning plate is internally rotatably connected to a plurality of rotating columns, and one end of the rotating column located outside the positioning plate is fixedly connected to a pointed cone, and the positioning plate is internally rotatably connected to a plurality of mutually meshing gears, and the rotating columns are fixedly connected to the gears, and a third pull rope is wrapped around the circular arc surface of one of the rotating columns, and one end of the third pull rope is fixedly connected to the interior of the sampling head, and a second coil spring is wrapped around the circular arc surface of one of the rotating columns, and one end of the second coil spring is fixedly connected to the inner wall of the positioning plate.

[0024] The effects achieved by the above components are: when the sampler is inserted into the food pile, the third pull rope rotates one of the rotating columns and the gear, the second coil spring is deformed, several gears mesh with each other and rotate together, all the rotating columns and the pointed cone rotate together, so that the positioning plate is conveniently inserted into the food pile. When the food is sampled, the second pull rope on the rectangular plate releases the pull on the positioning plate, and under the action of the reset elastic force of the second coil spring, the rotating column rotates in the opposite direction, the rotating column rewinds the third pull rope, and the third pull rope brings the positioning plate into the interior of the sampling head.

[0025] In summary, the beneficial effects of the present invention are:

[0026] In the present invention, the effect of adjusting the size of the internal space of the sampling slot is achieved through the adjustment component, thereby facilitating the sampler to take out different quantities of food samples, thereby improving the practicability of the sampler.

[0027] In the present invention, the positioning component is used to position the sampler, thereby preventing the sampler from being offset when sampling food, thereby affecting the accuracy of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 For the present invention Figure 1 A schematic diagram of the three-dimensional structure on the other side;

[0030] Figure 3 For the present invention Figure 1 A cross-sectional view of

[0031] Figure 4 A cross-sectional view of one of the sampling slots of the present invention;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the driving structure of the present invention;

[0033] Figure 6 It is a three-dimensional structural schematic diagram of the air pump and the fixing cylinder of the present invention;

[0034] Figure 7 For the present invention Figure 6 A cross-sectional view of

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the positioning component of the present invention;

[0036] Fig. 9 It is a schematic diagram of the three-dimensional structure of the positioning plate of the present invention;

[0037] Fig.10 For the present invention Fig. 9 sectional view of .

[0038] Legend: 1. Sampler; 2. Sampling head; 3. Sampling slot; 4. Adjustment assembly; 41. Rotating tube; 42. Guide rod; 43. First pull rope; 44. First spring; 45. Adjustment disk; 5. Fixing mechanism; 51. Operating disk; 52. Operating block; 53. Insertion rod; 54. Insertion hole; 6. Driving mechanism; 61. Belt; 62. Turntable; 63. Limit buckle; 64. Limit frame; 65. Support rod; 66. First piston; 67. Pump; 68. Air inlet; 69. Fixing cylinder; 610. The second piston; 611, the push rod; 612, the rotating plate; 613, the air outlet; 614, the pressure relief hole; 615, the U-shaped plate; 616, the rotating member; 617, the triangular plate; 7, the rotating mechanism; 71, the cover plate; 72, the reserved hole; 73, the rotating rod; 74, the protective plate; 75, the first coil spring; 8, the positioning assembly; 81, the rectangular plate; 82, the second pull rope; 83, the positioning plate; 84, the third pull rope; 85, the rotating column; 86, the gear; 87, the second coil spring; 88, the pointed cone; 89, the telescopic rod. DETAILED DESCRIPTION

[0039] Reference Figure 1-10As shown, the present invention provides a technical solution: a layered sampling device for food inspection and detection, comprising a sampler 1, a sampling head 2 is fixedly connected to one end of the sampler 1, a plurality of sampling slots 3 are opened inside the sampler 1, the sampler 1 is provided with an adjustment component 4 by means of the sampling slots 3, the adjustment component 4 comprises a guide rod 42 and a plurality of adjustment disks 45, wherein the adjustment disk 45 is located inside the sampling slots 3 and is driven by the guide rod 42, a fixing mechanism 5 for fixing the guide rod 42 is arranged at one end of the guide rod 42, a rotating mechanism 7 is arranged at the sampler 1 corresponding to the sampling slots 3, the rotating mechanism 7 comprises a plurality of protective plates 74, wherein the plurality of protective plates 74 respectively cover the sampling slots 3 of the sampler 1, a driving mechanism 6 for rotating the protective plates 74 is arranged inside the sampler 1, a positioning component 8 for fixing the sampler 1 is arranged inside the sampling head 2, and the positioning component 8 comprises two mutually symmetrical positioning plates 83. When it is necessary to use the sampler 1 to sample food, the staff first inserts the sampler 1 into the food pile. After the sampler 1 moves to the designated place, the staff adjusts the position of the adjustment disk 45 through the guide rod 42, and the size of the sampling slot 3 is changed. At this time, the driving mechanism 6 rotates with the protective plate 74 in the rotating mechanism 7, and the sampling slot 3 is exposed. The food enters the sampling slot 3, and the positioning plate 83 in the positioning assembly 8 is inserted into the food, so as to achieve the effect of positioning the sampler 1 and prevent the sampler 1 from shaking during sampling. After the food is sampled, the staff loosens the guide rod 42, and the fixing mechanism 5 fixes the guide rod 42. The protective plate 74 on the rotating device covers the sampling slot 3 again, and the positioning plate 83 on the sampling head 2 re-enters the interior of the sampling head 2. Finally, the staff pulls the sampler 1 out of the food.

[0040] Reference Figure 1-4As shown, the adjustment component 4 also includes a rotating tube 41, wherein the rotating tube 41 rotates inside the sampler 1, and the guide rod 42 slides inside the rotating tube 41, and a plurality of first pull ropes 43 are wrapped around the arc surface of the rotating tube 41, wherein one end of the first pull rope 43 is fixedly connected to the adjustment disk 45, and one side of the adjustment disk 45 is fixedly connected to a first spring 44, wherein one end of the first spring 44 is fixedly connected to the inner wall of the sampling slot 3. When it is necessary to sample food, the staff drives the rotating tube 41 to rotate through the guide rod 42, the first pull rope 43 is wound, and the first pull rope 43 moves the adjusting disk 45 inside the sampling slot 3, the first spring 44 contracts, and the space size of the sampling slot 3 changes. When the adjusting disk 45 moves to the appropriate position, the sampling slot 3 extracts a certain amount of food, and the staff stops rotating the guide rod 42. When it is necessary to take out the food in the sampling slot 3, the staff rotates the guide rod 42 in the opposite direction, and the rotating tube 41 loosens the winding of the first pull rope 43. Under the action of the reset elastic force of the first spring 44, the adjusting disk 45 moves toward the opening of the sampling slot 3, and the food in the sampling slot 3 is taken out. The effect of adjusting the internal space size of the sampling slot 3 is achieved by adjusting the adjustment component 4, thereby facilitating the sampler 1 to take out different quantities of food samples, thereby improving the practicality of the sampler 1.

[0041] Reference Figure 1-3 As shown, the fixing mechanism 5 includes an operating disk 51, which is fixedly connected to one end of the guide rod 42 located outside the sampler 1, an operating block 52 is fixedly connected to one side of the operating disk 51, and an insertion rod 53 is fixedly connected to one side of the operating disk 51. The sampler 1 is evenly provided with a plurality of insertion holes 54 corresponding to the insertion rod 53, wherein the plurality of insertion holes 54 are distributed in a circle and are adapted to the size of the insertion rod 53. When the guide rod 42 is needed, the staff first pulls the guide rod 42 through the operating block 52, and the guide rod 42 moves the operating disk 51 away from the sampler 1, and the insertion rod 53 on the operating disk 51 is away from the insertion hole 54. At this time, the staff rotates the operating block 52 again, and the guide rod 42 rotates with the rotating tube 41. After rotating to a suitable place, the staff pushes the operating block 52, and the insertion rod 53 on the operating disk 51 is inserted into the insertion hole 54 of the sampler 1, thereby achieving the effect of fixing the guide rod 42.

[0042] Reference Figure 1-4As shown, the rotating mechanism 7 also includes a cover plate 71, wherein the cover plate 71 is fixedly connected to the opening of the sampling slot 3 of the sampler 1, and a reserved hole 72 is opened in the cover plate 71 corresponding to the sampling slot 3. The cover plate 71 is internally rotatably connected to a rotating rod 73, and the arc surface of the rotating rod 73 is fixedly connected to a plurality of protective plates 74, wherein the protective plates 74 are located inside the reserved hole 72 and are adapted to the size of the reserved hole 72, and the arc surface of the rotating rod 73 is sleeved with a plurality of first coil springs 75, wherein one end of the first coil spring 75 is fixedly connected to the inner wall of the cover plate 71. When the sampler 1 samples food, the driving mechanism 6 rotates with the rotating rod 73, and the protective plate 74 on the rotating rod 73 rotates inside the reserved hole 72 of the cover plate 71, and the first coil spring 75 is deformed. When the sampler 1 completes sampling of the food, under the action of the restoring elastic force of the first coil spring 75, the rotating rod 73 rotates with the protective plate 74, and the protective plate 74 covers the reserved hole 72 of the cover plate 71 again. The rotating device achieves the effect of protecting the food inside the sampling slot 3 in the sampler 1 to prevent the food from falling from the sampling slot 3.

[0043] Reference Figure 5-7As shown, the driving mechanism 6 includes a belt 61, which is arranged inside the sampler 1, wherein one of the discs of the belt 61 is arranged on the arc surface of the rotating cylinder, one side of the other disc of the belt 61 is fixedly connected to a rotating disk 62, one side of the rotating disk 62 is fixedly connected to a limiting buckle 63, and the arc surface of the limiting buckle 63 is covered with a limiting frame 64, and the inside of the sampler 1 is fixedly connected to an air pump 67 and a fixed cylinder 69, wherein the air outlet end of the air pump 67 is located inside the fixed cylinder 69, and the inside of the air pump 67 is slidably connected to a first piston 6 6, wherein the first piston 66 is fixedly connected to the limit frame 64 by means of a support rod 65, an air inlet 68 is provided at the top of the air pump 67, an air outlet 613 is provided at the bottom of the fixed cylinder 69, wherein the size of the air outlet 613 is relatively small, a pressure relief hole 614 is provided on the arc surface of the fixed cylinder 69, a second piston 610 is slidably connected inside the fixed cylinder 69, a push rod 611 is fixedly connected to one side of the second piston 610, a rotating plate 612 is fixedly connected to the arc surface of the rotating rod 73, wherein the push plate is located directly below the rotating plate 612. When the rotating tube 41 rotates, the rotating tube 41 drives the limit buckle 63 of the turntable 62 to rotate through the belt 61, and the limit buckle 63 moves up and down with the limit frame 64, the support rod 65 and the first piston 66. When the first piston 66 moves downward, the space inside the air pump 67 becomes larger, and the air enters the interior of the air pump 67 through the air inlet 68. When the first piston 66 moves upward, the internal space of the air pump 67 becomes smaller, and the air inside the air pump 67 enters the fixed cylinder 69. With the continuous reciprocating motion of the first piston 66, the air pump 67 will continuously supply air to the fixed cylinder 69. Since the air outlet 613 of the fixed cylinder 69 is small, the outflowing air is less than the supplied air, the air pressure inside the fixed cylinder 69 increases, and the second piston 610 inside the fixed cylinder 69 carries the push rod 611 upward Move, and finally the push rod 611 rotates with the rotating plate 612 and the rotating rod 73, and the rotating rod 73 rotates with the protective plate 74. When the second piston 610 moves to the position of the pressure relief hole 614, the pressure relief hole 614 is exposed, which accelerates the output of the air inside the fixed cylinder 69 and prevents the second piston 610 from moving out of the fixed cylinder 69. When the rotating cylinder stops rotating, the air pump 67 stops supplying air to the fixed cylinder 69, and the air outlet 613 at the bottom of the fixed cylinder 69 will slowly deliver the air inside the fixed cylinder 69. The second piston 610 returns to its original position with the push rod 611, and the push rod 611 releases the ejection of the rotating plate 612, and the rotating rod 73 is conveniently rotated through the driving mechanism 6, so that the protective plate 74 is opened when the food is sampled, and the protective plate 74 is closed when the sampling is completed.

[0044] Reference Figure 5-7As shown, one end of the top rod 611 is fixedly connected to a U-shaped plate 615, and the two arms of the U-shaped plate 615 are rotatably connected to the same rotating member 616, wherein the arc surface of the rotating member 616 is in contact with the rotating plate 612. When the top rod 611 rotates with the rotating plate 612, the rotating member 616 on the U-shaped plate 615 rotates with the rotating plate 612, thereby reducing the friction between the rotating plate 612 and the top rod 611, making it easier for the top rod 611 to rotate with the rotating plate 612. Two mutually symmetrical triangular plates 617 are fixedly connected to one side of the limit frame 64, wherein one side of the triangular plates 617 is fixedly connected to the arc surface of the support rod 65. The triangular plates 617 are provided to increase the contact area between the limit frame 64 and the support rod 65, thereby improving the stability between the support rod 65 and the limit frame 64.

[0045] Reference Figure 8-10 As shown, in this embodiment: the positioning assembly 8 also includes a rectangular plate 81, which is located inside the sampling head 2, wherein the rectangular plate 81 is located at one end of the guide rod 42 and is rotatably connected to the guide rod 42, and the second pull rope 82 is fixedly connected to both sides of the rectangular plate 81, wherein one end of the second pull rope 82 is fixedly connected to the bottom of the positioning plate 83. When the staff pulls the guide rod 42, the guide rod 42 moves the rectangular plate 81 to the side away from the sampling head 2, and the second pull rope 82 moves the positioning plate 83, and finally the positioning plate 83 moves out of the sampling head 2 and inserts into the interior of the food pile. The positioning assembly 8 achieves the effect of positioning the sampler 1, and avoids the sampler 1 from being offset when sampling the food, thereby affecting the sampling accuracy.

[0046] Reference Figure 8-10As shown, in this embodiment: two mutually symmetrical telescopic rods 89 are fixedly connected to one side of the rectangular plate 81, wherein one end of the telescopic rod 89 is fixedly connected to the inner wall of the sampler 1. By setting the telescopic rod 89, the effect of limiting the moving direction of the rectangular plate 81 is achieved, so as to prevent the rectangular plate 81 from shaking and improve the stability of the movement of the rectangular plate 81. The positioning plate 83 is a hollow plate, and the internal rotation of the positioning plate 83 is connected to a plurality of rotating columns 85, and one end of the rotating column 85 located outside the positioning plate 83 is fixedly connected to a pointed cone 88, and the internal rotation of the positioning plate 83 is connected to a plurality of mutually meshing gears 86, and the rotating column 85 is fixedly connected to the gear 86, and the arc surface of one of the rotating columns 85 is wound around the third pull rope 84, wherein one end of the third pull rope 84 is fixedly connected to the inside of the sampling head 2, and the arc surface of one of the rotating columns 85 is wound around the second coil spring 87, wherein one end of the second coil spring 87 is fixedly connected to the inner wall of the positioning plate 83. When the sampler 1 is inserted into the food pile, the third pull rope 84 rotates with one of the rotating columns 85 and the gear 86, the second coil spring 87 is deformed, and several gears 86 mesh with each other and rotate together, and all the rotating columns 85 and the pointed cone 88 rotate together, so that the positioning plate 83 can be inserted into the food pile. When the food is sampled, the second pull rope 82 on the rectangular plate 81 releases the pull on the positioning plate 83. Under the action of the restoring elastic force of the second coil spring 87, the rotating column 85 rotates in the opposite direction, and the rotating column 85 rewinds the third pull rope 84, and the third pull rope 84 brings the positioning plate 83 into the interior of the sampling head 2.

[0047] Working principle: When it is necessary to use the sampler 1 to sample food, the staff first inserts the sampler 1 into the food pile. After the sampler 1 moves to the designated place, the staff pulls the guide rod 42 through the operating block 52. The guide rod 42 moves the operating disk 51 away from the sampler 1, and the insertion rod 53 on the operating disk 51 moves away from the insertion hole 54. At this time, the staff rotates the operating block 52 again, and the guide rod 42 rotates the rotating tube 41. The rotating tube 41 winds the first pull rope 43. The first pull rope 43 moves the adjusting disk 45 inside the sampling slot 3. The first spring 44 contracts, and the spatial size of the sampling slot 3 changes. At this time, the driving mechanism 6 rotates the rotating rod 73 on the rotating mechanism 7, and the rotating rod 73 rotates with the protective plate 74. The first coil spring 75 is deformed, and the sampling slot 3 is exposed. When the adjusting disk 45 After moving to the appropriate position, the sampling slot 3 extracts a certain amount of food, the staff stops rotating the operating block 52 and pushes the operating block 52 in the direction of the sampler 1, and the insertion rod 53 on the operating disk 51 is inserted into the insertion hole 54 of the sampler 1 to fix the guide rod 42. Under the action of the reset elastic force of the first coil spring 75, the protective plate 74 covers the reserved hole 72 of the cover plate 71 again. When the food in the sampling slot 3 needs to be taken out, the staff rotates the guide rod 42 in the opposite direction, and the rotating tube 41 loosens the winding of the first pull rope 43. Under the action of the reset elastic force of the first spring 44, the adjusting disk 45 moves toward the opening of the sampling slot 3, and the food in the sampling slot 3 is taken out. The effect of adjusting the size of the internal space of the sampling slot 3 is achieved by adjusting the component 4, so that it is convenient for the sampler 1 to take out different quantities of food samples, thereby improving the practicality of the sampler 1.

[0048] When the rotating tube 41 rotates, the rotating tube 41 drives the limit buckle 63 of the turntable 62 to rotate through the belt 61, and the limit buckle 63 moves up and down with the limit frame 64, the support rod 65 and the first piston 66. When the first piston 66 moves downward, the space inside the air pump 67 becomes larger, and air enters the interior of the air pump 67 through the air inlet 68. When the first piston 66 moves upward, the internal space of the air pump 67 becomes smaller, and the air inside the air pump 67 enters the fixed cylinder 69. As the first piston 66 continues to reciprocate, the air pump 67 will continuously supply air to the fixed cylinder 69. Since the air outlet 613 of the fixed cylinder 69 is small, the outflowing air is less than the supplied air, the air pressure inside the fixed cylinder 69 increases, and the second piston 610 inside the fixed cylinder 69 moves upward with the push rod 611, and finally the push rod 6 11 With the help of the rotating member 616 on the U-shaped plate 615, the rotating plate 612 and the rotating rod 73 are rotated together, and the rotating rod 73 rotates with the protective plate 74. When the second piston 610 moves to the position of the pressure relief hole 614, the pressure relief hole 614 is exposed, which accelerates the output of the air inside the fixed cylinder 69 and prevents the second piston 610 from moving out of the fixed cylinder 69. When the rotating cylinder stops rotating, the air pump 67 stops supplying air to the fixed cylinder 69, and the air outlet 613 at the bottom of the fixed cylinder 69 will slowly deliver the air inside the fixed cylinder 69. The second piston 610 returns to its original position with the ejector rod 611, and the ejector rod 611 releases the ejection of the rotating plate 612, so that the rotating rod 73 is conveniently rotated through the driving mechanism 6, so that the protective plate 74 is opened when the food is sampled, and the protective plate 74 is closed when the sampling is completed.

[0049] When the staff pulls the guide rod 42, the guide rod 42 moves the rectangular plate 81 to the side away from the sampling head 2, and the second pull rope 82 moves the positioning plate 83. Finally, the positioning plate 83 moves out of the sampling head 2 and inserts into the inside of the food pile. The third pull rope 84 rotates one of the rotating columns 85 and the gear 86, and the second coil spring 87 is deformed. Several gears 86 mesh with each other and rotate together. All the rotating columns 85 and the pointed cone 88 rotate together, which facilitates the insertion of the positioning plate 83 into the inside of the food pile. When the insert on the guide rod 42 When the rod 53 is inserted into the socket 54, the rectangular plate 81 returns to its original position, and the second pull rope 82 on the rectangular plate 81 releases the pull on the positioning plate 83. Under the action of the restoring elastic force of the second coil spring 87, the rotating column 85 rotates in the opposite direction, and the rotating column 85 rewinds the third pull rope 84. The third pull rope 84 brings the positioning plate 83 into the interior of the sampling head 2, and the positioning component 8 is used to position the sampler 1, so as to avoid the sampler 1 from being offset when sampling food, thereby affecting the sampling accuracy.

Claims

1. A stratified sampling device for food inspection and testing, comprising a sampler (1), characterized in that: One end of the sampler (1) is fixedly connected to a sampling head (2), a plurality of sampling slots (3) are provided inside the sampler (1), the sampler (1) is provided with an adjustment assembly (4) by means of the sampling slots (3), the adjustment assembly (4) comprising a guide rod (42) and a plurality of adjustment disks (45), wherein the adjustment disks (45) are located inside the sampling slots (3) and driven by the guide rod (42), and a fixing mechanism (5) for fixing the guide rod (42) is provided at one end of the guide rod (42) The sampler (1) is provided with a rotating mechanism (7) at a position corresponding to the sampling slot (3), and the rotating mechanism (7) includes a plurality of protective plates (74), wherein the plurality of protective plates (74) respectively cover the sampling slots (3) of the sampler (1), and the interior of the sampler (1) is provided with a driving mechanism (6) for rotating the protective plates (74), and the interior of the sampling head (2) is provided with a positioning component (8) for fixing the sampler (1), and the positioning component (8) includes two mutually symmetrical positioning plates (83).

2. A stratified sampling device for food inspection and detection according to claim 1, characterized in that: The adjustment assembly (4) further comprises a rotating tube (41), wherein the rotating tube (41) rotates inside the sampler (1), and the guide rod (42) slides inside the rotating tube (41), and a plurality of first pull ropes (43) are wound around the arc surface of the rotating tube (41), wherein one end of the first pull rope (43) is fixedly connected to the adjustment disk (45), and one side of the adjustment disk (45) is fixedly connected to a first spring (44), wherein one end of the first spring (44) is fixedly connected to the inner wall of the sampling slot (3).

3. A stratified sampling device for food inspection and testing according to claim 1, characterized in that: The fixing mechanism (5) comprises an operating disk (51), the operating disk (51) being fixedly connected to one end of the guide rod (42) located outside the sampler (1), an operating block (52) being fixedly connected to one side of the operating disk (51), an insertion rod (53) being fixedly connected to one side of the operating disk (51), and a plurality of insertion holes (54) being evenly provided at locations of the sampler (1) corresponding to the insertion rod (53), wherein the plurality of insertion holes (54) are distributed in a circumferential manner and are adapted to the size of the insertion rod (53).

4. A stratified sampling device for food inspection and detection according to claim 1, characterized in that: The rotating mechanism (7) further comprises a cover plate (71), wherein the cover plate (71) is fixedly connected to the opening of the sampling slot (3) of the sampler (1), a reserved hole (72) is provided on the cover plate (71) corresponding to the sampling slot (3), a rotating rod (73) is rotatably connected inside the cover plate (71), the arc surface of the rotating rod (73) is fixedly connected to a plurality of protective plates (74), wherein the protective plates (74) are located inside the reserved hole (72) and are adapted to the size of the reserved hole (72), and the arc surface of the rotating rod (73) is sleeved with a plurality of first coil springs (75), wherein one end of the first coil spring (75) is fixedly connected to the inner wall of the cover plate (71).

5. A stratified sampling device for food inspection and testing according to claim 1, characterized in that: The driving mechanism (6) comprises a belt (61), wherein the belt (61) is arranged inside the sampler (1), wherein one disc of the belt (61) is arranged on the arc surface of the rotating cylinder, one side of the other disc of the belt (61) is fixedly connected to a rotating disk (62), one side of the rotating disk (62) is fixedly connected to a limiting buckle (63), the arc surface of the limiting buckle (63) is sleeved with a limiting frame (64), and the inside of the sampler (1) is fixedly connected to an air pump (67) and a fixed cylinder (69), wherein the air outlet end of the air pump (67) is located inside the fixed cylinder (69), and the inside of the air pump (67) is slidably connected to a first piston (66) ), wherein the first piston (66) is fixedly connected to the limit frame (64) by means of a support rod (65), an air inlet (68) is provided at the top of the air pump (67), an air outlet (613) is provided at the bottom of the fixed cylinder (69), wherein the size of the air outlet (613) is relatively small, a pressure relief hole (614) is provided on the arc surface of the fixed cylinder (69), a second piston (610) is slidably connected inside the fixed cylinder (69), a push rod (611) is fixedly connected to one side of the second piston (610), and a rotating plate (612) is fixedly connected to the arc surface of the rotating rod (73), wherein the push plate is located directly below the rotating plate (612).

6. A stratified sampling device for food inspection and testing according to claim 5, characterized in that: One end of the push rod (611) is fixedly connected to a U-shaped plate (615), and two arms of the U-shaped plate (615) are rotatably connected to the same rotating member (616), wherein the arc surface of the rotating member (616) is in contact with the rotating plate (612).

7. A stratified sampling device for food inspection and testing according to claim 5, characterized in that: Two mutually symmetrical triangular plates (617) are fixedly connected to one side of the limiting frame (64), wherein one side of the triangular plates (617) is fixedly connected to the arc surface of the support rod (65).

8. A stratified sampling device for food inspection and testing according to claim 1, characterized in that: The positioning assembly (8) further comprises a rectangular plate (81), wherein the rectangular plate (81) is located inside the sampling head (2), wherein the rectangular plate (81) is located at one end of the guide rod (42) and is rotatably connected to the guide rod (42), and second pull ropes (82) are fixedly connected to both sides of the rectangular plate (81), wherein one end of the second pull rope (82) is fixedly connected to the bottom of the positioning plate (83).

9. A stratified sampling device for food inspection and testing according to claim 8, characterized in that: Two mutually symmetrical telescopic rods (89) are fixedly connected to one side of the rectangular plate (81), wherein one end of the telescopic rod (89) is fixedly connected to the inner wall of the sampler (1).

10. A stratified sampling device for food inspection and testing according to claim 8, characterized in that: The positioning plate (83) is a hollow plate. The positioning plate (83) is internally rotatably connected to a plurality of rotating columns (85). One end of the rotating column (85) located outside the positioning plate (83) is fixedly connected to a pointed cone (88). The positioning plate (83) is internally rotatably connected to a plurality of mutually meshing gears (86). The rotating column (85) is fixedly connected to the gears (86). The arc surface of one of the rotating columns (85) is wound around a third pull rope (84), wherein one end of the third pull rope (84) is fixedly connected to the inside of the sampling head (2). The arc surface of one of the rotating columns (85) is wound around a second coil spring (87), wherein one end of the second coil spring (87) is fixedly connected to the inner wall of the positioning plate (83).

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