Food safety detection sampling device

Abstract

The invention relates to the technical field of food detection, in particular to a food safety detection sampling device which comprises a holding barrel, a conveying part, a tooth part and a continuous tube replacing part, the conveying part and the tooth part are both arranged in the holding barrel, and the continuous tube replacing part is arranged on one side of the holding barrel. Through an assembly composed of the holding cylinder, the conveying part, the tooth part and the continuous tube replacing part, a set of continuous suction and sampling device is provided for food safety detection, the tooth part and the continuous tube replacing part are driven to operate through the pressing part, then the conveying part is driven to work, and the continuous tube replacing part can be matched with the conveying part to continuously replace test tubes used for storing samples; after the test tube is assembled on the continuous tube replacing part, the test tube does not need to be manually held, so that a sampling worker can continuously take an original sample and the sampling device, the operation complexity in the test tube replacing period is avoided, the sampling working efficiency of food safety detection is greatly improved, the operation complexity of the sampling worker is reduced, and the use is flexible and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of food detection, and in particular to a food safety detection sampling device. Background Art

[0002] At present, food safety testing and sampling is a key link in ensuring food quality and safety. Its application is widely involved in various stages of food production, processing, circulation and consumption. It helps people discover harmful substances or pollution in food, provides strong support for risk warning and prevention and control, protects public health and maintains market order.

[0003] In food safety testing, accuracy is of vital importance. There are many complex situations in the food production process, such as different production batches, differences in raw material sources, contamination in the production process, etc. These situations may lead to fluctuations in food quality. It is necessary to continuously extract samples from multiple test tubes to reduce the impact of accidental errors and improve the accuracy of test results. This is because multiple sampling can reduce the deviation that may be caused by single sampling, making the final test results closer to the true value.

[0004] In the existing food safety sampling process, in order to improve the representativeness and accuracy of sampling, it is necessary to continuously extract samples from multiple test tubes. As a result, the handling between the sampling equipment and the sample originals is more complicated during each test tube replacement process, resulting in low sampling efficiency. Therefore, a food safety detection sampling device is proposed. Summary of the Invention

[0005] In response to the problems in the prior art, the present invention provides a food safety detection sampling device, which is convenient for providing a continuous extraction and sampling device for food safety detection. The pressing part drives the gear part and drives the continuous tube changing part to operate, thereby driving the conveying part to work, and enables the continuous tube changing part to cooperate with the conveying part to continuously replace the test tube for storing the sample. After the test tube is assembled on the continuous tube changing part, there is no need to manually hold the test tube, so that the sampling personnel can continuously take the sample original and the sampling device of the present application, eliminating the complexity of operations during the test tube replacement, greatly improving the sampling efficiency of food safety detection, reducing the tediousness of the sampling personnel's operation, and being flexible and convenient to use.

[0006] The technical solution adopted by the present invention to solve its technical problem is a food safety detection sampling device, which includes a grip tube, a conveying part, a gear part and a continuous tube changing part. The conveying part and the gear part are both arranged in the grip tube, and the continuous tube changing part is arranged on one side of the grip tube. A pressing part for driving the gear part is inserted at the top of the grip tube, and the gear part is located at the top of the conveying part. The conveying part includes a circular shell and a hose with a certain degree of resilience. The hose is laid along one side of the circular shell, and the top and bottom of the hose respectively pass through the top and bottom of the circular shell. A discharge joint is installed at the top of the hose, and a feed joint is installed at the bottom of the hose.

[0007] By adopting the above technical solution, a set of continuous suction sampling device is provided for food safety testing through the components consisting of a grip tube, a conveying part, a tooth part, a continuous tube changing part and a pressing part. The grip tube provides the sampling personnel with the grasping body of the overall device. The pressing part drives the tooth part and drives the continuous tube changing part to operate, thereby driving the conveying part to work, so that the continuous tube changing part can cooperate with the conveying part to continuously replace the test tubes used to store samples, which greatly improves the sampling efficiency of food safety testing and reduces the tediousness of the sampling personnel's operation.

[0008] Specifically, a disc is provided on one side of the circular shell, and stainless steel pressing wheels are provided at equal distances on the outer circumference of the disc close to the hose. The center of the stainless steel pressing wheel is rotatably connected to the disc through a bearing, and the stainless steel pressing wheel is pressed on the hose, and the center of the disc away from the hose is rotatably connected to the circular shell through a bearing. The bottom of the circular shell is connected to a lower tray, and the outer periphery of the lower tray is fixedly connected to the inner wall of the grip tube.

[0009] By adopting the above technical solution, a peristaltic pump is simulated through an assembly consisting of a hose and a stainless steel pressure wheel in the conveying part. After the disc rotates, the stainless steel pressure wheel will push the hose in turn, so that one end of the hose continuously forms a negative pressure suction state, providing suction force for the feed joint, so that the material at the feed joint end can be discharged from the discharge joint.

[0010] Specifically, an upper support plate is provided on the top of the lower tray, and the gear part is provided on the upper support plate. The gear part includes a first gear plate, a reversing member and an upper gear. The first gear plate bearing is rotatably connected to the handle tube, and one side of the first gear plate is connected to an upper pulley. The reversing member includes a first bevel tooth and a second bevel tooth, the first bevel tooth is connected to the upper pulley, the top of the second bevel tooth is engaged with the first bevel tooth, the center of the second bevel tooth is installed with a first ratchet, the bottom of the inner sleeve of the first ratchet is rotatably connected to the upper support plate through a bearing, and the gear shaft of the upper gear is fixedly connected to the top of the inner sleeve of the first ratchet through a key pin.

[0011] By adopting the above technical solution, through the setting of the tooth part, the pressing force exerted by the personnel on the pressing part can be converted into a rotational force, providing rotational power for the disc of the conveying part, so that the disc drives the stainless steel pressure wheel to rotate and push the hose, so that the conveying part forms a peristaltic suction effect, which makes it convenient for personnel to suck the original food sample into the test tube based on the peristaltic suction force.

[0012] Specifically, a second ratchet is provided at the center of one side of the circular shell, a third toothed disc is installed on the outer circumference of the outer sleeve of the second ratchet, an axis head is provided at the center of the disk close to the third toothed disc, one end of the axis head passes through the circular shell and is fixedly connected to the inner sleeve of the second ratchet through a key pin, the center of the third toothed disc passes through, a second toothed disc is meshed with the top of the third toothed disc, and the second toothed disc is rotatably connected to the circular shell through a bearing; a lower pulley is connected to one side of the second toothed disc, and the lower pulley and the upper pulley are connected by a transmission belt.

[0013] By adopting the above technical solution, through the rebound force of the elastic spring, after the person releases the force on the pressing part, the elastic spring can make the rod sleeve of the pressing part rebound, and use the rebound force to make the second ratchet in the tooth part drive the upper gear to rotate. Based on the rotational force, the upper gear provides rotational force for the continuous tube changing part, so that the continuous tube changing part can automatically rotate the placed test tubes during each pressure release process of the pressing part, so that the next group of test tubes to be stored automatically enter the bottom of the discharge end of the conveying part, thereby eliminating the need for manual tube changing and improving the convenience of food safety testing and sampling.

[0014] Specifically, the continuous tube changing part includes a turntable, an arc-shaped slider and a mounting hoop. The top circumference of the turntable is equidistantly provided with insertion holes for inserting test tubes. The top of the outer circumference of the turntable is provided with an annular groove corresponding to the arc-shaped slider. The arc-shaped slider is slidably connected to the annular groove, and the side of the arc-shaped slider away from the annular groove is connected to the mounting hoop, and the mounting hoop is mounted on one side of the grip tube by bolts. An annular tooth groove is provided at the bottom of the outer periphery of the turntable, and one side of the upper gear passes through the grip tube and engages with the annular tooth groove.

[0015] By adopting the above technical solution, the tube insertion holes in the continuous tube changing section provide storage space for the test tubes storing samples. Through the setting of the annular tooth groove, the turntable of the continuous tube changing section will rotate under the rotation of the upper gear, so that the test tubes in the tube insertion holes on the turntable are rotated and moved, allowing the next group of test tubes to enter under the discharge end of the conveying section, preparing for the next sampling.

[0016] Specifically, the pressing part includes a rod sleeve, an inner rod, an elastic spring and a pressure plate. The inner rod is located on one side of the lower tray, and the bottom of the inner rod is fixedly connected to the inner bottom of the grip tube. The rod sleeve passes through the top of the grip tube, and the bottom of the rod sleeve is sleeved on the inner rod. The elastic spring is sleeved on the outer periphery of the inner rod, and the top and bottom of the elastic spring are fixedly connected to the bottom end of the rod sleeve and the inner bottom of the grip tube respectively.

[0017] By adopting the above technical solution, the pressing part transmits manpower to the tooth part and the continuous tube changing part, so that the tooth part can provide a rotational driving force for the conveying part, and the elastic spring is energized by the pressure of the person, so that the elastic spring drives the turntable of the continuous tube changing part to rotate through the elastic force of the upper gear of the tooth part during the rebound period, so that the continuous tube changing part cooperates with the conveying part to suck the sample into the test tube, and the inner rod is used to guide the up and down movement of the rod sleeve, thereby improving the stability of the rod sleeve during the up and down movement.

[0018] Specifically, a linear tooth groove corresponding to the first tooth plate is formed on a side of the rod sleeve close to the first tooth plate, and the first tooth plate is meshed with the linear tooth groove; The pressing plate fixes the top of the rod sleeve.

[0019] By adopting the above technical solution and setting the linear teeth, during the up and down movement of the rod sleeve, the linear teeth on the rod sleeve will drive the first toothed disc engaged therewith to rotate. When the rod sleeve moves downward, the rotational power of the first toothed disc will be transmitted to the conveying part. When the rod sleeve moves upward, the rotational power of the first toothed disc will be transmitted to the continuous tube changing part.

[0020] Specifically, a shaping hose is provided on the top of the grip tube, the feed end of the shaping hose is connected to the discharge joint through a pipe, and the discharge end of the shaping hose is connected to the discharge nozzle. The shaping hose includes a polytetrafluoroethylene hose core, a nitrile rubber sleeve and an iron wire for bending and positioning. The nitrile rubber sleeve is covered on the outside of the polytetrafluoroethylene hose core, and the iron wire is passed through the nitrile rubber sleeve; A polytetrafluoroethylene straw is inserted into the bottom of the feed joint, a suction nozzle is threadedly installed on the bottom of the polytetrafluoroethylene straw, and a filter mesh is embedded in the top of the suction nozzle.

[0021] By adopting the above technical solution, the material entering the polytetrafluoroethylene straw is filtered by setting the filter mesh to reduce the large particles of incompletely crushed samples from entering the polytetrafluoroethylene straw. After the negative pressure is generated at the feed joint of the hose, the material can enter the polytetrafluoroethylene straw through the suction nozzle, and is discharged from the polytetrafluoroethylene straw to the shaped hose after passing through the hose, and is discharged to the outside through the discharge nozzle on the shaped hose. By setting the iron wire in the shaped hose, the discharge angle of the shaped hose can be bent and adjusted to a certain extent to meet the different sampling needs of the samplers.

[0022] The beneficial effects of the present invention are as follows: through the components consisting of a gripping tube, a conveying part, a toothed part, a continuous tube changing part and a pressing part, a continuous suction sampling device is provided for food safety testing, the gripping tube provides the sampling personnel with a grasping body of the overall device, the pressing part drives the toothed part and drives the continuous tube changing part to operate, thereby driving the conveying part to work, and the continuous tube changing part can cooperate with the conveying part to continuously replace the test tube for storing the sample, and after the test tube is assembled with the continuous tube changing part, there is no need to manually hold the test tube, so that the sampling personnel can continuously take the sample original and the sampling device of the present application, eliminating the complexity of operations during the test tube replacement, greatly improving the sampling efficiency of food safety testing, reducing the tediousness of the sampling personnel's operations, and being flexible and convenient to use, solving the problem that in the existing food safety sampling process, in order to improve the representativeness and accuracy of the sampling, it is necessary to continuously extract samples from multiple test tubes, resulting in a high complexity of taking between the sampling equipment and the sample original during each test tube replacement process, resulting in low sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and examples.

[0024] Figure 1 It is an overall diagram of the present invention; Figure 2 This is a positional relationship diagram of the conveying part, gear part and continuous tube changing part of the present invention; Figure 3 This is a schematic diagram of the inner rod structure of the present invention; Figure 4 Schematic diagram of the tooth structure of the present invention; Figure 5 It is a schematic structural diagram of the commutating member of the present invention; Figure 6 This is a schematic diagram of the rod sleeve structure of the present invention; Figure 7 This is a schematic structural diagram of the continuous tube changing unit of the present invention; Figure 8 It is a schematic diagram of the hose structure of the present invention; Figure 9 Schematic diagram of the nozzle structure of the present invention; Figure 10 Schematic diagram of the cross-sectional structure of the shaped hose of the present invention; Figure: handle 1, lower tray 2, conveying part 3, circular shell 31, disc 32, shaft head 321, hose 33, stainless steel pressure wheel 34, feed connector 35, discharge connector 36, polytetrafluoroethylene straw 37, suction nozzle 371, filter mesh 372, shaping hose 38, polytetrafluoroethylene hose core 381, nitrile rubber sleeve 382, ​​wire 383, discharge nozzle 39, upper support plate 4, gear part 5, first gear disc 51, reversing member 52, first bevel gear 521, second bevel gear 522, second toothed disc 53, third toothed disc 54, first ratchet 55, lower pulley 56, upper pulley 57, upper gear 58, second ratchet 59, continuous tube changing unit 6, turntable 61, tube insertion hole 62, annular slide groove 63, arc-shaped slider 64, mounting hoop 65, annular tooth groove 66, pressing unit 7, rod sleeve 71, linear tooth groove 72, inner rod 74, elastic spring 75, pressure plate 76. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In order to improve the sampling efficiency of food safety testing, reduce the complexity of sampling personnel's operation, and use it flexibly and conveniently, as an embodiment of the present invention, Figure 1-10 As shown, the food safety detection sampling device of the present invention includes a handle 1, a conveying part 3, a toothed part 5 and a continuous tube changing part 6. The conveying part 3 and the toothed part 5 are both arranged in the handle 1, and the continuous tube changing part 6 is arranged on one side of the handle 1. A pressing part 7 for driving the toothed part 5 is inserted at the top of the handle 1, and the toothed part 5 is located at the top of the conveying part 3; The conveying part 3 includes a circular shell 31 and a hose 33 with a certain degree of resilience. The hose 33 is laid along one side of the circular shell 31, and the top and bottom of the hose 33 respectively pass through the top and bottom of the circular shell 31. A discharge connector 36 is installed at the top of the hose 33, and a feed connector 35 is installed at the bottom of the hose 33.

[0027] When in use, a set of continuous suction sampling device is provided by the holding tube 1, the conveying part 3, the tooth part 5, the continuous tube changing part 6 and the pressing part 7 for food safety testing. The pressing part 7 drives the tooth part 5 and the continuous tube changing part 6 to operate, thereby driving the conveying part 3 to work, and enabling the continuous tube changing part 6 to cooperate with the conveying part 3 to continuously replace the test tube for storing samples, eliminating the complexity of operation during the test tube replacement, greatly improving the sampling efficiency of food safety testing, reducing the tediousness of the sampling personnel's operation, and being flexible and convenient to use.

[0028] like Figure 1-10As shown, the present invention further includes a disc 32 provided on one side of the circular housing 31, and stainless steel pressing wheels 34 are provided at equal distances on the outer circumference of the disc 32 near the hose 33. The center of the stainless steel pressing wheel 34 is rotatably connected to the disc 32 via a bearing, and the stainless steel pressing wheel 34 is pressed onto the hose 33, and the center of the disc 32 away from the hose 33 is rotatably connected to the circular housing 31 via a bearing. The bottom of the circular shell 31 is connected to the lower tray 2 , and the outer periphery of the lower tray 2 is fixedly connected to the inner wall of the grip tube 1 .

[0029] During use, after the disc 32 rotates, the stainless steel pressure wheel 34 will push the hose 33 in turn, so that one end of the hose 33 continuously forms a negative pressure suction state, providing suction force for the feed connector 35, so that the material at the end of the feed connector 35 can be discharged from the discharge connector 36.

[0030] In order to provide rotational power to the disc 32 of the conveying part 3, for example, Figure 1-10 As shown, the present invention also includes that an upper support plate 4 is provided on the top of the lower tray 2, and the gear part 5 is provided on the upper support plate 4. The gear part 5 includes a first gear plate 51, a reversing member 52 and an upper gear 58. The first gear plate 51 is rotatably connected to the handle 1 by a bearing, and an upper pulley 57 is connected to one side of the first gear plate 51; The reversing member 52 includes a first bevel tooth 521 and a second bevel tooth 522. The first bevel tooth 521 is connected to the upper pulley 57. The top of the second bevel tooth 522 is engaged with the first bevel tooth 521. The center of the second bevel tooth 522 is installed with a first ratchet 55. The bottom of the inner sleeve of the first ratchet 55 is rotatably connected to the upper support plate 4 through a bearing. The gear shaft of the upper gear 58 is fixedly connected to the top of the inner sleeve of the first ratchet 55 through a key pin.

[0031] During use, the pressing force of the pressing part 7 is converted into a rotational force, which provides rotational power for the disc 32 of the conveying part 3, so that the disc 32 drives the stainless steel pressing wheel 34 to rotate and push the hose 33, so that the conveying part 3 forms a peristaltic suction effect, which makes it convenient for personnel to suck the original food sample into the test tube based on the peristaltic suction force.

[0032] In order to improve the convenience of food safety testing sampling, for example, Figure 1-10As shown, the present invention also includes that a second ratchet 59 is provided at the center of one side of the circular shell 31, and a third toothed disc 54 is installed on the outer periphery of the outer sleeve of the second ratchet 59, and a shaft head 321 is provided at the center of the disc 32 near the side of the third toothed disc 54, and one end of the shaft head 321 passes through the circular shell 31 and is fixedly connected to the inner sleeve of the second ratchet 59 by a key pin, and the center of the third toothed disc 54 passes through, and a second toothed disc 53 is meshed with the top of the third toothed disc 54, and the second toothed disc 53 is rotatably connected to the circular shell 31 through a bearing; a lower pulley 56 is connected to one side of the second toothed disc 53, and the lower pulley 56 and the upper pulley 57 are connected by a transmission belt.

[0033] During use, when the pressing portion 7 is pressed downward to drive the first toothed disc 51 to rotate, the upper pulley 57 on the first toothed disc 51 drives the lower pulley 56 to rotate, so that the second toothed disc 53 connected to the lower pulley 56 drives the third toothed disc 54 to rotate. At the same time, the first ratchet 55 inside the third toothed disc 54 drives the disc 32 of the conveying part 3 to rotate, so that the conveying part 3 obtains the driving force for operation. Due to the setting of the second ratchet 59, the upper gear 58 does not rotate; Similarly, after the person leaves the pressing part 7, the rod sleeve 71 of the pressing part 7 rises and drives the first gear disc 51 to rotate. The first bevel gear 521 installed on the first gear disc 51 drives the second bevel gear 522 to rotate, and drives the upper gear 58 to rotate through the second ratchet 59, so that the upper gear 58 drives the turntable 61 of the continuous tube changing part 6 to rotate, so that the continuous tube changing part 6 obtains a rotational driving force, so that the next group of test tubes to be stored automatically enter the lower part of the discharge end of the conveying part 3, thereby eliminating the need for manual tube changing and improving the convenience of food safety testing and sampling. At this time, based on the setting of the first ratchet 55, the disc 32 does not rotate.

[0034] For example, Figure 1-10 As shown, the present invention also includes that the continuous tube changing unit 6 includes a turntable 61, an arc-shaped slider 64 and a mounting hoop 65. The top circumference of the turntable 61 is equidistantly provided with insertion holes 62 for inserting test tubes. The top of the outer circumference of the turntable 61 is provided with an annular groove 63 corresponding to the arc-shaped slider 64. The arc-shaped slider 64 is slidably connected to the annular groove 63, and the side of the arc-shaped slider 64 away from the annular groove 63 is connected to the mounting hoop 65, and the mounting hoop 65 is mounted on one side of the handle 1 by bolts; An annular tooth groove 66 is formed at the bottom of the outer periphery of the rotating disk 61 , and one side of the upper gear 58 passes through the handle 1 and engages with the annular tooth groove 66 .

[0035] During use, personnel insert the test tubes required for sampling and storage into the tube insertion holes 62 in sequence, and under the rotation of the upper gear 58, the turntable 61 of the continuous tube changing part 6 will rotate, so that the test tubes in the tube insertion holes 62 on the turntable 61 are rotated and moved, so that the next group of test tubes enter the bottom of the discharge end of the conveying part 3, ready for the next sampling.

[0036] For example, Figure 1-10 As shown, the present invention also includes that the pressing part 7 includes a rod sleeve 71, an inner rod 74, an elastic spring 75 and a pressure plate 76, the inner rod 74 is located on one side of the lower tray 2, and the bottom of the inner rod 74 is fixedly connected to the inner bottom of the grip tube 1, the rod sleeve 71 passes through the top of the grip tube 1, and the bottom of the rod sleeve 71 is sleeved on the inner rod 74, the elastic spring 75 is sleeved on the outer periphery of the inner rod 74, and the top and bottom of the elastic spring 75 are fixedly connected to the bottom end of the rod sleeve 71 and the inner bottom of the grip tube 1 respectively.

[0037] During use, personnel utilize the pressing portion 7 to transmit the pressing force to the tooth portion 5 and the continuous tube changing portion 6, so that the tooth portion 5 can provide a rotational driving force for the conveying portion 3, and the personnel presses on the stored energy of the elastic spring 75, so that the elastic spring 75 drives the turntable 61 of the continuous tube changing portion 6 to rotate through the elastic force of the upper gear 58 of the tooth portion 5 during the rebound period, so that the continuous tube changing portion 6 cooperates with the conveying portion 3 to suck the sample into the test tube, and the inner rod 74 is used to guide the up and down movement of the rod sleeve 71, thereby improving the stability of the rod sleeve 71 during the up and down movement.

[0038] The present invention also includes that a linear tooth groove 72 corresponding to the first tooth plate 51 is formed on the side of the rod sleeve 71 close to the first tooth plate 51, and the first tooth plate 51 is meshed with the linear tooth groove 72; The pressing plate 76 fixes the top of the rod sleeve 71 .

[0039] During use, personnel press the rod sleeve 71 through the pressure plate 76, so that the linear tooth grooves 72 on the rod sleeve 71 will drive the first toothed disc 51 engaged therewith to rotate. When the rod sleeve 71 moves downward, the rotational power of the first toothed disc 51 will be transmitted to the conveying part 3. When the rod sleeve 71 moves upward, the rotational power of the first toothed disc 51 will be transmitted to the continuous tube changing part 6.

[0040] For example, Figure 1-10 As shown, the present invention also includes a shaping hose 38 provided on the top of the grip tube 1. The feed end of the shaping hose 38 is connected to the discharge joint 36 via a pipe, and the discharge end of the shaping hose 38 is connected to the discharge nozzle 39. The shaping hose 38 includes a polytetrafluoroethylene hose core 381, a nitrile rubber sleeve 382, ​​and a wire 383 for bending and positioning. The nitrile rubber sleeve 382 is coated on the outside of the polytetrafluoroethylene hose core 381, and the wire 383 is passed through the nitrile rubber sleeve 382. A polytetrafluoroethylene straw 37 is inserted into the bottom of the feed connector 35 , a suction nozzle 371 is threadedly mounted on the bottom of the polytetrafluoroethylene straw 37 , and a filter mesh 372 is embedded in the top of the suction nozzle 371 .

[0041] During use, personnel can select a filter mesh 372 of the required mesh size according to sampling needs, embed the filter mesh 372 into the top of the suction nozzle 371, and then assemble the suction nozzle 371 into the polytetrafluoroethylene straw 37, so that the material entering the polytetrafluoroethylene straw 37 is filtered to reduce the number of large particles of incompletely crushed samples entering the polytetrafluoroethylene straw 37. After the feed joint 35 of the hose 33 generates negative pressure, the material can enter the polytetrafluoroethylene straw 37 through the suction nozzle 371, and is discharged from the polytetrafluoroethylene straw 37 through the hose 33 to the shaping hose 38, and is discharged to the outside through the discharge nozzle 39 on the shaping hose 38. By setting the iron wire 383 in the shaping hose 38, the discharge angle of the shaping hose 38 can be bent and adjusted to a certain extent to meet the different sampling needs of the samplers.

[0042] When the present invention is used, the sampler inserts the test tubes to be sampled into the insertion holes 62 in sequence, and bends the shaping hose 38 according to the height of the test tubes, so that the discharge angle of the discharge nozzle 39 on the shaping hose 38 can be adjusted to a certain extent to meet the sampling needs of the sampler for sample tubes of different heights. The sampler holds the grip tube 1 with one hand, and the thumb of the hand holding the grip tube 1 is placed on the pressing plate 76 of the pressing part 7 to prepare for pressing the rod sleeve 71. The other hand can take the original sample container to be sampled. The sampling personnel then inserts the suction nozzle 371 into the container of the original sample and presses the plate 76 to press the pressure rod sleeve 71 downward and drive the first toothed disc 51 to rotate. At this time, the upper pulley 57 on the first toothed disc 51 drives the lower pulley 56 to rotate, so that the second toothed disc 53 connected to the lower pulley 56 drives the third toothed disc 54 to rotate. At the same time, the first ratchet 55 inside the third toothed disc 54 drives the disc 32 of the conveying part 3 to rotate, and the disc 32 drives the stainless steel pressing wheel 34 to rotate and push the hose 33. The hose 33 forms a peristaltic suction effect, so that the original sample enters the polytetrafluoroethylene straw 37 through the suction nozzle 371, and is discharged to the shaped hose 38 after entering the hose 33 from the polytetrafluoroethylene straw 37, and is discharged to the outside through the discharge nozzle 39 on the shaped hose 38 into the test tube in the insertion hole 62. After the person leaves the pressing part 7, the elastic spring 75 is stored in energy during the pressing period, so that the elastic spring 75 pushes the rod sleeve 71 upward, and the linear tooth groove 72 of the rod sleeve 71 drives the first toothed disc 51 to rotate. , the first bevel gear 521 installed on the first gear disc 51 drives the second bevel gear 522 to rotate, and drives the upper gear 58 to rotate through the second ratchet 59, so that the upper gear 58 rotates through the turntable 61 engaged with the annular tooth groove 66, so that the tube insertion hole 62 on the turntable 61 is replaced below the discharge nozzle 39, and the next group of test tubes to be stored automatically enter the bottom of the discharge end of the conveying part 3, thereby eliminating the need for manual tube replacement and improving the convenience of food safety testing sampling. In this cycle, continuous sampling operation is realized; After use, the cleaning liquid is mixed with the pressing part 7 to make the cleaning liquid flow into the pipe of the conveying part 3 for cleaning, and then mixed with deionized water for cleaning, and then it can be used again.

[0043] The hose 33 is made of polytetrafluoroethylene.

[0044] The specific number and diameter of the intubation holes are set according to actual usage requirements.

[0045] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A food safety detection sampling device, characterized in that: It comprises a grip tube (1), a conveying portion (3), a toothed portion (5) and a continuous tube changing portion (6), wherein the conveying portion (3) and the toothed portion (5) are both arranged in the grip tube (1), the continuous tube changing portion (6) is arranged on one side of the grip tube (1), a pressing portion (7) for driving the toothed portion (5) is inserted at the top of the grip tube (1), and the toothed portion (5) is located at the top of the conveying portion (3); The conveying portion (3) comprises a circular outer shell (31) and a hose (33) having a certain resilience, wherein the hose (33) is laid along one side of the circular outer shell (31), and the top and bottom of the hose (33) respectively penetrate the top and bottom of the circular outer shell (31), and a discharge joint (36) is installed at the top of the hose (33), and a feed joint (35) is installed at the bottom of the hose (33).

2. A food safety detection sampling device according to claim 1, characterized in that: A disc (32) is arranged on one side of the circular housing (31), and stainless steel pressing wheels (34) are arranged at equal distances on the outer circumference of the disc (32) on the side close to the hose (33), the center of the stainless steel pressing wheel (34) is rotatably connected to the disc (32) via a bearing, and the stainless steel pressing wheel (34) is pressed onto the hose (33), and the center of the disc (32) on the side away from the hose (33) is rotatably connected to the circular housing (31) via a bearing; The bottom of the circular shell (31) is connected to a lower tray (2), and the outer periphery of the lower tray (2) is fixedly connected to the inner wall of the grip tube (1).

3. A food safety detection sampling device according to claim 2, characterized in that: An upper support plate (4) is arranged on the top of the lower tray (2), and the gear part (5) is arranged on the upper support plate (4). The gear part (5) comprises a first toothed disc (51), a reversing member (52) and an upper gear (58). The bearing of the first toothed disc (51) is rotatably connected to the grip tube (1), and one side of the first toothed disc (51) is connected to an upper pulley (57); The reversing member (52) comprises a first bevel tooth (521) and a second bevel tooth (522), wherein the first bevel tooth (521) is connected to an upper pulley (57), the top of the second bevel tooth (522) meshes with the first bevel tooth (521), a first ratchet (55) is mounted at the center of the second bevel tooth (522), the bottom of an inner sleeve of the first ratchet (55) is rotatably connected to an upper support plate (4) via a bearing, and the gear shaft of the upper gear (58) is fixedly connected to the top of an inner sleeve of the first ratchet (55) via a key pin.

4. A food safety detection sampling device according to claim 3, characterized in that: A second ratchet (59) is arranged at the center of one side of the circular housing (31); a third toothed disc (54) is installed on the outer circumference of the outer sleeve of the second ratchet (59); a shaft head (321) is arranged at the center of one side of the circular disc (32) close to the third toothed disc (54); one end of the shaft head (321) passes through the circular housing (31) and is fixedly connected to the inner sleeve of the second ratchet (59) via a key pin; the center of the third toothed disc (54) passes through; a second toothed disc (53) is meshed at the top of the third toothed disc (54); the second toothed disc (53) is rotatably connected to the circular housing (31) via a bearing; a lower belt pulley (56) is connected to one side of the second toothed disc (53); the lower belt pulley (56) and an upper belt pulley (57) are connected via a transmission belt.

5. A food safety detection sampling device according to claim 4, characterized in that: The continuous tube changing part (6) comprises a rotating disk (61), an arc-shaped slider (64) and a mounting hoop (65); the rotating disk (61) has insertion holes (62) for inserting test tubes formed at equal intervals on the top circumference thereof; the rotating disk (61) has an annular sliding groove (63) corresponding to the arc-shaped slider (64) formed on the top of the outer circumference thereof; the arc-shaped slider (64) is slidably connected to the annular sliding groove (63); and the side of the arc-shaped slider (64) away from the annular sliding groove (63) is connected to the mounting hoop (65); and the mounting hoop (65) is mounted on one side of the grip tube (1) by means of bolts; An annular tooth groove (66) is formed at the bottom of the outer periphery of the rotating disk (61), and one side of the upper gear (58) passes through the grip tube (1) and meshes with the annular tooth groove (66).

6. A food safety detection sampling device according to claim 5, characterized in that: The pressing portion (7) comprises a rod sleeve (71), an inner rod (74), an elastic spring (75) and a pressing plate (76); the inner rod (74) is located at one side of the lower tray (2), and the bottom of the inner rod (74) is fixedly connected to the inner bottom of the grip tube (1); the rod sleeve (71) passes through the top of the grip tube (1), and the bottom of the rod sleeve (71) is sleeved on the inner rod (74); the elastic spring (75) is sleeved on the outer circumference of the inner rod (74), and the top and bottom of the elastic spring (75) are respectively fixedly connected to the bottom end of the rod sleeve (71) and the inner bottom of the grip tube (1).

7. A food safety detection sampling device according to claim 6, characterized in that: A side of the rod sleeve (71) close to the first toothed disc (51) is provided with a linear tooth groove (72) corresponding thereto, and the first toothed disc (51) is meshed with the linear tooth groove (72); The pressing plate (76) fixes the top of the rod sleeve (71).

8. A food safety detection sampling device according to claim 7, characterized in that: A shaping hose (38) is arranged on the top of the grip tube (1); the feed end of the shaping hose (38) is connected to a discharge joint (36) via a pipeline; the discharge end of the shaping hose (38) is connected to a discharge nozzle (39); the shaping hose (38) comprises a polytetrafluoroethylene hose core (381), a nitrile rubber sleeve (382) and an iron wire (383) for bending and positioning; the nitrile rubber sleeve (382) is coated on the outside of the polytetrafluoroethylene hose core (381), and the iron wire (383) is inserted into the nitrile rubber sleeve (382); A polytetrafluoroethylene straw (37) is inserted into the bottom of the feed joint (35), a suction nozzle (371) is threadedly mounted on the bottom of the polytetrafluoroethylene straw (37), and a filter mesh (372) is embedded in the top of the suction nozzle (371).

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