Rapid sampler and method for food safety detection

Abstract

The invention relates to the technical field of detection sampling, in particular to a rapid sampler and method for food safety detection. The rapid sampler for food safety detection comprises a shell, a mounting frame connected to the outer side of the shell, a mounting shell connected to the bottom of the shell, a rotating drum driven by a driving mechanism rotatably connected to the mounting shell, a connecting shell connected to the side face of the shell, and a lifting plate driven by a linear motor slidably connected to the interior of the connecting shell. The bottom of the lifting plate is connected with a hollow connecting rod. After the lifting plate moves upwards, the driving motor is controlled to enable the rotary drum to rotate, the sharp part of the sampling end is drilled open at a sampling point, the sample is limited by the limiting block under the action of the elastic sheet, the sample in the rotary drum is pushed out by the fixed semicircular plate and the rotary semicircular plate which move downwards, and food with relatively hard texture can be quickly sampled; and after the rotating semicircular plate is rotated and opened, liquid enters the rotating cylinder for sampling, and meanwhile, the device has the function of sampling solid food and liquid food and is rapid and convenient to sample.

Description

Technical Field

[0001] The invention relates to the technical field of detection and sampling, and in particular to a rapid sampler and method for food safety detection. Background Art

[0002] In order to timely discover food safety problems and ensure food safety, it is necessary to sample food for testing. For solid food or frozen food, sterile knives and tweezers are used to cut samples, and for liquid food, sterile syringes or rubber-tipped droppers are used to extract samples. In this sampling process, the following problems exist:

[0003] (1) Some foods are hard in texture, such as large pieces of candy or frozen food. It is difficult to use a sterile knife to take samples. In addition, it is inconvenient to cut the sample at the sampling point in the middle of such foods, and it is difficult to take out the sample completely.

[0004] (2) Different tools are required for sampling solid foods and liquid foods. If there are many types of food to be sampled, the sampling tools need to be replaced frequently, which makes sampling inconvenient. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a rapid sampler and method for food safety detection.

[0006] A food safety detection rapid sampler comprises an outer shell, a mounting frame is connected to the outer side of the outer shell, a mounting shell is connected to the bottom of the outer shell, a rotating drum driven by a driving mechanism is rotatably connected to the mounting shell, a connecting shell is connected to the side of the outer shell, a lifting plate driven by a linear motor is slidably connected to the inside of the connecting shell, a hollow connecting rod is connected to the bottom of the lifting plate, the connecting rod slides into the inside of the rotating drum, a sliding block located inside the rotating drum is connected to the lower part of the connecting rod, a fixed semicircular plate is connected to the bottom end of the connecting rod, a rotating rod driven by a servo motor is rotatably connected to the lifting plate, the rotating rod is located inside the connecting rod, and a rotating semicircular plate is connected to the bottom end of the rotating rod.

[0007] To further explain, the driving mechanism includes a driving motor, the mounting shell is connected to the driving motor, and the output shaft of the driving motor is transmitted to the rotating drum through a gear set.

[0008] To further explain, the rotating drum is divided into a connecting end, a transparent section and a sampling end from top to bottom, and a plurality of sharp portions are provided at circumferential intervals at the bottom of the sampling end.

[0009] Further explanation: the food safety detection rapid sampler also includes a limit block, and at least two limit blocks are slidably connected to the inner wall of the sampling end at evenly spaced intervals in the circumferential direction. The limit blocks are provided with inclined surfaces on one side close to the connecting rod, and elastic sheets are connected between the limit blocks and the sampling end.

[0010] To further explain, a rubber ring is connected to the outside of the sliding block, and a plurality of through holes are opened on the sliding block, which are connected vertically, and a one-way valve is installed in each of the through holes.

[0011] Further explanation: the food safety detection rapid sampler also includes an internal cleaning mechanism, which includes a four-way pipe. An annular cavity is formed between the upper inner side of the mounting shell and the outer wall of the connecting end. The mounting shell is connected to a four-way pipe which is communicated with the annular cavity. A valve stem is slidably connected to the four-way pipe. A circular hole is provided at the lower end of the valve stem. When the valve stem slides upward, the four-way pipe is in a conducting state. A water inlet hole which is communicated with the annular cavity is provided in the middle of the connecting end, and a sealing ring is connected to the outside of the connecting end.

[0012] Further explanation, the internal cleaning mechanism also includes a connecting block, the lifting plate is connected to a connecting block extending to the outside of the connecting shell, the top of the valve stem is connected to a sliding rod, both ends of the sliding rod are bent to form a bending portion, and two protrusions are provided on the upper part of the sliding rod. When the connecting block moves up and down, the connecting block will contact the bending portion; the outside of the connecting shell is connected to a limit piece located between the two protrusions, and the inside of the limit piece is provided with a rubber portion that contacts the sliding rod.

[0013] Further explanation: the food safety detection rapid sampler also includes an external cleaning mechanism, which includes an electric slide rail, two electric slide rails are connected to the outer shell, and lifting rods are installed on the electric slide rails. A mounting plate is commonly connected between the bottom ends of the two lifting rods, and a water spray ring is connected to the mounting plate. The water spray ring has multiple annularly distributed nozzles on the inner side, and a hose is connected between the four-way pipe and the water spray ring.

[0014] Further description, the external cleaning mechanism also includes a guide rod, which is connected to the side of the connecting shell, and a connecting plate is slidably connected to the guide rod. The connecting plate is fixedly connected to one of the lifting rods, and a guide wheel is rotatably connected to the connecting plate, and the hose is wrapped around the guide wheel.

[0015] A rapid sampling method for food safety detection specifically comprises the following steps:

[0016] S1: Place the solid food directly under the rotating drum, control the linear motor to move the lifting plate, the fixed semicircular plate and the rotating semicircular plate upward, and move the food safety detection rapid sampler downward as a whole. Control the drive motor to rotate the rotating drum, and the sharp part drills at the sampling point, and the solid sample enters the rotating drum;

[0017] S2: The food safety testing rapid sampler moves upward as a whole, the rotating drum leaves the food, and the limit block limits the solid sample under the action of the elastic sheet;

[0018] S3: Control the linear motor to move the lifting plate downward, and the fixed semicircular plate and the rotating semicircular plate push out the solid sample in the rotating cylinder;

[0019] S4: When liquid food needs to be sampled, the drum is slightly tilted, the liquid food is placed under the drum, the servo motor is controlled to rotate the semicircular plate 180 degrees, the food safety detection rapid sampler moves downward as a whole, and the liquid sample enters the drum;

[0020] S5: Control the servo motor to rotate the rotating semicircular plate 180 degrees, control the linear motor to move the lifting plate, the fixed semicircular plate and the rotating semicircular plate up, and the food safety detection rapid sampler moves up as a whole. Control the servo motor to open the rotating semicircular plate, and the liquid sample flows out of the drum for detection.

[0021] The beneficial effects of the present invention are as follows: 1. After the lifting plate moves up, the driving motor is controlled to rotate the rotating drum, and the sharp part of the sampling end is drilled at the sampling point. Under the action of the elastic sheet, the limit block limits the sample, and the downward-moving fixed semicircular plate and the rotating semicircular plate push the sample in the rotating drum out, so that the food with a harder texture can also be sampled quickly; after the rotating semicircular plate is rotated and opened, the liquid enters the rotating drum for sampling, and it has the function of sampling both solid food and liquid food, and the sampling is fast and convenient.

[0022] 2. After the rising connecting block contacts the upper bending part, the connecting block pushes the sliding rod to make the valve stem rise, the four-way pipe is turned on, and the water pipe is connected to the outside of the four-way pipe. Water enters the inside of the drum after passing through the circular hole, the annular cavity and the water inlet hole in sequence, and then flows to the bottom of the sliding block through the one-way valve, thereby automatically and timely cleaning the inner wall of the drum, the surface of the sliding block, the surface of the connecting rod, the surface of the fixed semicircular plate and the surface of the rotating semicircular plate to avoid residual food ingredients, facilitate continued sampling of food, and increase the speed of food sampling.

[0023] 3. When cleaning the inside of the drum, the water in the four-way pipe flows to the water spray ring through the hose, and the electric slide rail is controlled to lower the lifting rod, the water spray ring and the guide wheel. The guide wheel prevents the hose from sagging and bending. At the same time, the nozzle of the water spray ring sprays water around the outer wall of the drum, thereby automatically and timely flushing the outer wall of the drum to prevent food ingredients from remaining on the outer wall of the drum, further improving the speed of food sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a schematic structural diagram of another viewing angle after the mounting frame of the present invention is hidden.

[0026] Figure 3 It is a partial cross-sectional structural schematic diagram of the housing, mounting housing, driving motor, gear set, rotating drum, connecting housing and lifting plate of the present invention.

[0027] Figure 4It is a schematic diagram of the structure of the rotating drum, lifting plate, connecting rod and sliding block of the present invention, wherein the rotating drum is cut away.

[0028] Figure 5 The present invention is based on Figure 4 Exploded diagram.

[0029] Figure 6 The present invention is based on Figure 5 Schematic diagram of the local structure.

[0030] Figure 7 It is a schematic diagram of the bottom view of the sampling end, the fixed semicircular plate and the rotating semicircular plate of the present invention.

[0031] Figure 8 It is a schematic diagram of the connection relationship between the limit block and the elastic sheet of the present invention.

[0032] Fig. 9 It is a schematic diagram of the structure of the internal cleaning mechanism and the external cleaning mechanism of the present invention.

[0033] Fig.10 It is a partial cross-sectional structural schematic diagram of the mounting shell and the internal cleaning mechanism of the present invention.

[0034] Fig.11 The figure is a schematic diagram of the connection relationship among the connecting block, the sliding rod and the limiting member of the present invention.

[0035] Fig.12 It is a schematic structural diagram of the position limiting member of the present invention.

[0036] Fig.13 It is a structural schematic diagram of the external cleaning mechanism of the present invention.

[0037] In the above figures: 1-housing, 2-mounting frame, 3-mounting shell, 31-driving motor, 32-gear set, 4-rotating cylinder, 40-connecting end, 41-transparent section, 42-sampling end, 421-sharp portion, 431-limiting block, 432-elastic sheet, 5-connecting shell, 6-lifting plate, 7-connecting rod, 8-sliding block, 81-rubber ring, 82-through hole, 9-fixed semicircular plate, 10-rotating rod, 11-rotating semicircular plate, 121-four-way Tube, 122-valve stem, 123-round hole, 124-annular cavity, 125-water inlet hole, 126-sealing ring, 131-connecting block, 132-sliding rod, 1321-bending part, 1322-protruding part, 133-limiting part, 134-rubber part, 141-electric slide rail, 142-lifting rod, 143-mounting plate, 144-water spray ring, 145-hose, 146-guide rod, 147-connecting plate, 148-guide wheel. DETAILED DESCRIPTION

[0038] The present invention will now be described more fully below with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0039] Example 1: A food safety detection rapid sampler, such as Figure 1-Figure 8 As shown, it includes a shell 1, a mounting frame 2, a mounting shell 3, a rotating drum 4, a connecting shell 5, a lifting plate 6, a connecting rod 7, a sliding block 8, a fixed semicircular plate 9, a rotating rod 10 and a rotating semicircular plate 11. The mounting frame 2 is welded to the outer side of the top of the shell 1, and the mounting shell 3 is fixedly connected to the bottom of the shell 1. The rotating drum 4 driven by a driving mechanism is rotatably connected to the mounting shell 3. The driving mechanism includes a driving motor 31 and a gear set 32. The driving motor 31 is bolted to the right side of the top of the mounting shell 3. The output shaft of the driving motor 31 is transmitted to the rotating drum 4 through the gear set 32. Specifically, a gear ring is connected to the upper outer part of the rotating drum 4, and a gear meshing with the gear ring is connected to the output shaft of the driving motor 31. The rotating drum 4 can be rotated by controlling the driving motor 31; the rotating drum 4 is divided into a connecting end 40, a transparent section 41 and a sampling end 40 from top to bottom. 2, four sharp parts 421 are arranged at intervals at the bottom of the sampling end 42; a connecting shell 5 is connected to the left side of the shell 1, and a lifting plate 6 driven by a linear motor is slidably connected inside the connecting shell 5. The linear motor is a prior art, and the linear motor has the function of driving the lifting plate 6 to perform linear motion; a hollow connecting rod 7 is connected to the bottom of the lifting plate 6, and the connecting rod 7 slides into the inside of the rotating drum 4, and the lower part of the connecting rod 7 is connected to a sliding block 8 located inside the rotating drum 4, and a fixed semicircular plate 9 is fixedly connected to the bottom end of the connecting rod 7, and a rotating rod 10 is rotatably connected to the lifting plate 6. A servo motor is bolted to the lifting plate 6, and the output shaft of the servo motor is connected to the top of the rotating rod 10, and the rotating rod 10 is located inside the connecting rod 7. A rotating semicircular plate 11 is fixedly connected to the bottom end of the rotating rod 10, and the positions of the fixed semicircular plate 9 and the rotating semicircular plate 11 are as shown in FIG. Figure 7 shown.

[0040] refer to Figure 6 and Figure 8 A food safety detection rapid sampler also includes a limit block 431 and an elastic sheet 432. Four limit blocks 431 are slidably connected to the inner wall of the sampling end 42 at uniform intervals in the circumferential direction. The limit blocks 431 are provided with inclined surfaces on one side close to the connecting rod 7. The inclined surfaces ensure that the fixed semicircular plate 9 and the rotating semicircular plate 11 will not be affected by the limit blocks 431 when they move up and down. Two elastic sheets 432 are fixedly connected between the limit blocks 431 and the sampling end 42.

[0041] Initially, the fixed semicircular plate 9 and the rotating semicircular plate 11 form a circle. When it is necessary to sample solid food, the food safety detection rapid sampler is installed on the peripheral linear drive through the mounting frame 2. The structure of the linear drive is the existing technology. The linear drive can drive the mounting frame 2 to move linearly, and the solid food to be detected is placed directly below the rotating drum 4. The linear motor is controlled to drive the lifting plate 6 to move upward, driving the connecting rod 7, the sliding block 8, the fixed semicircular plate 9, the rotating rod 10 and the rotating semicircular plate 11 to move upward, and then the linear drive is controlled to drive the mounting frame 2 to move downward, driving the food safety detection rapid sampler to move downward as a whole, and at the same time, under the transmission action of the gear set 32, the drive motor 31 is controlled to rotate the rotating drum 4, and the sharp portion 421 of the sampling end 42 is drilled at the sampling point, and the taken out solid sample enters the inside of the rotating drum 4.

[0042] Then, the linear drive is controlled to drive the mounting frame 2 to move upward, thereby driving the food safety detection rapid sampler to move upward as a whole, so that the rotating drum 4 leaves the solid food. The sample inside the rotating drum 4 will squeeze the limiting block 431, and the elastic sheet 432 will be deformed. Under the action of the elastic sheet 432, the limiting block 431 limits the solid sample to prevent the sample from falling out of the rotating drum 4; the linear motor is controlled to make the lifting plate 6, the connecting rod 7, the sliding block 8, the fixed semicircular plate 9, the rotating rod 10 and the rotating semicircular plate 11 move downward and reset, and the fixed semicircular plate 9 and the rotating semicircular plate 11 that move downward push out the solid sample in the rotating drum 4. For foods with a harder texture, the complete sample can be quickly and easily taken out, and sampling is more convenient.

[0043] When it is necessary to sample liquid food, the food safety detection rapid sampler is installed on the linear drive, and the rotating drum 4 is in a slightly inclined state. Specifically, the angle between the rotating drum 4 and the horizontal plane is 75 degrees; after the liquid food to be detected is placed under the rotating drum 4, the servo motor is first controlled to drive the rotating rod 10 to rotate 180 degrees, driving the rotating semicircular plate 11 to rotate 180 degrees relative to the fixed semicircular plate 9, and the rotating semicircular plate 11 becomes an open state, and then the linear drive is controlled to move the food safety detection rapid sampler downward as a whole, the rotating drum 4 extends into the liquid, the liquid sample enters the rotating drum 4 and the liquid sample is located below the sliding block 8. Since the rotating drum 4 is in a slightly inclined state, the air inside the rotating drum 4 can be discharged; then Then, the servo motor is controlled to drive the rotating rod 10 and the rotating semicircular plate 11 to rotate 180 degrees again, and the rotating semicircular plate 11 becomes closed. The linear motor is controlled to move the lifting plate 6, the connecting rod 7, the sliding block 8, the fixed semicircular plate 9, the rotating rod 10 and the rotating semicircular plate 11 upward, so that the liquid sample is temporarily retained in the rotating drum 4. The linear drive is controlled to move the food safety detection rapid sampler upward as a whole, and the rotating drum 4 leaves the liquid food. Finally, the servo motor is controlled to open the rotating semicircular plate 11 again, and the liquid sample can flow out from the inside of the rotating drum 4 for detection. The transparent section 41 is transparently set to observe the removal of the sample. In this way, it has the function of sampling both solid food and liquid food, and sampling is faster and more convenient.

[0044] Example 2: Based on Example 1, refer to Figure 1 , Figure 2 , Figure 6 , Fig. 9 , Fig.10 and Fig.11 A food safety detection rapid sampler also includes an internal cleaning mechanism, which includes a four-way pipe 121, a valve stem 122 and a sealing ring 126. An annular cavity 124 is formed between the upper side of the inner side of the mounting shell 3 and the outer wall of the connecting end 40. The upper part of the mounting shell 3 is connected to the four-way pipe 121. Fig. 9 and Fig.10 The four-way tube 121 has a left end, a right end, an upper end and a lower end. The right end of the four-way tube 121 is connected to the annular cavity 124. A valve stem 122 is slidably connected between the upper and lower ends of the four-way tube 121. A circular hole 123 is opened at the lower end of the valve stem 122. When the valve stem 122 slides upward, the four-way tube 121 is in a conducting state; a water inlet hole 125 connected to the annular cavity 124 is opened in the middle of the connecting end 40, and two sealing rings 126 located above and below the water inlet hole 125 are connected to the outside of the connecting end 40; a rubber ring 81 is connected to the middle of the outer side of the sliding block 8, and the rubber ring 81 plays a sealing role. A plurality of through holes 82 that pass through the sliding block 8 from top to bottom are opened on the sliding block 8, and a one-way valve is installed in the through hole 82. Under the action of the one-way valve, the liquid cannot flow from bottom to top, while the liquid above the sliding block 8 can flow out from top to bottom.

[0045] refer to Figure 1 , Figure 2 , Fig.11 and Fig.12 The internal cleaning mechanism also includes a connecting block 131, a sliding rod 132 and a limiting member 133. The left side of the lifting plate 6 is fixedly connected to a connecting block 131 extending to the outside of the connecting shell 5. The top of the valve stem 122 is fixedly connected to a sliding rod 132. The upper and lower ends of the sliding rod 132 are bent to form a bending portion 1321. Two protrusions 1322 are provided on the upper part of the sliding rod 132. When the connecting block 131 moves up and down, the connecting block 131 will contact the bending portion 1321; the outer side of the connecting shell 5 is connected to a limiting member 133 located between the two protrusions 1322, and the moving stroke of the sliding rod 132 can be limited by the two protrusions 1322. The inner side of the limiting member 133 is provided with a rubber portion 134 that contacts the sliding rod 132.

[0046] Initially, the circular hole 123 is blocked by the four-way tube 121, and the four-way tube 121 is in a non-conductive state; in the process of sampling solid food and liquid food, the upwardly moving lifting plate 6 drives the connecting block 131 to move upward, and the connecting block 131 moves upward to a position where it has not yet contacted with the upper bent portion 1321; when the sampling is completed and the inside of the drum 4 needs to be cleaned, the linear motor is controlled to make the lifting plate 6 and the connecting block 131 continue to rise, and when the connecting block 131 contacts the bent portion 1321 on the upper part of the sliding rod 132, the connecting block 131 continues to rise and pushes the sliding rod 132 to rise, driving the valve stem 122 to rise, and at this time, the left end and the right end of the four-way tube 121 are in a conductive state. In this state, a water pipe with a certain water pressure is connected to the left end of the four-way pipe 121, and water can enter the annular cavity 124 through the circular hole 123. The sealing ring 126 plays a sealing role. The water in the annular cavity 124 enters the inside of the rotating drum 4 through the water inlet hole 125. The water in the rotating drum 4 continues to flow to the bottom of the sliding block 8 through the one-way valve. The one-way valve can prevent the sample from entering the top of the sliding block 8 from bottom to top during liquid sampling, thereby automatically and timely cleaning the inner wall of the rotating drum 4, the surface of the sliding block 8, the surface of the connecting rod 7, the surface of the fixed semicircular plate 9 and the surface of the rotating semicircular plate 11 to avoid residual food components, facilitate continued sampling of food, and improve the speed of food sampling.

[0047] When cleaning is completed, the linear motor is controlled to lower the lifting plate 6 and the connecting block 131. The connecting block 131 is first separated from the upper bending portion 1321. Since the rubber portion 134 is in contact with the sliding rod 132, there is a certain friction between the rubber portion 134 and the sliding rod 132, so that the sliding rod 132 and the valve stem 122 will not descend temporarily, and the four-way pipe 121 continues to pass water for cleaning; the connecting block 131 continues to descend, the connecting block 131 contacts the lower bending portion 1321 and pushes the sliding rod 132 to descend, so that the sliding rod 132 and the valve stem 122 can be lowered to the initial position, the four-way pipe 121 is no longer conductive, and the cleaning work is completed.

[0048] Embodiment 3: Based on Embodiment 2, refer to Figure 1 , Figure 2 , Fig. 9 and Fig.13 A food safety detection rapid sampler also includes an external cleaning mechanism, which includes an electric slide rail 141, a lifting rod 142, a mounting plate 143, a water spray ring 144 and a hose 145. The front and rear sides of the housing 1 are connected to the electric slide rail 141, and the lifting rod 142 is installed on the electric slide rail 141. The bottom ends of the two lifting rods 142 are fixedly connected to the mounting plate 143, and the mounting plate 143 is connected to the water spray ring 144. The inner side of the water spray ring 144 has a plurality of annularly distributed The nozzle has a structure according to the prior art. A hose 145 is connected between one end of the four-way pipe 121 close to the mounting shell 3 and the water spray ring 144. The external cleaning mechanism also includes a guide rod 146, a connecting plate 147 and a guide wheel 148. The guide rod 146 is welded to the rear side of the connecting shell 5, and a connecting plate 147 is slidably connected to the guide rod 146. The connecting plate 147 is fixedly connected to the lifting rod 142 on the rear side, and a guide wheel 148 is rotatably connected to the connecting plate 147. The hose 145 is wrapped around the guide wheel 148.

[0049] When the valve stem 122 is in an ascending state to clean the inside of the drum 4, the water in the four-way pipe 121 will also flow to the water spray ring 144 through the hose 145, controlling the electric slide rail 141 to drive the lifting rod 142 to descend, thereby driving the mounting plate 143, the water spray ring 144, the connecting plate 147 and the guide wheel 148 to descend, and the hose 145 is wrapped around the guide wheel 148. The guide wheel 148 can prevent the hose 145 from sagging and bending. At the same time, the nozzle of the water spray ring 144 sprays water around the outer wall of the drum 4, thereby automatically and timely flushing the outer wall of the drum 4 to prevent food ingredients from remaining on the outer wall of the drum 4, thereby further improving the speed of food sampling.

[0050] A rapid sampling method for food safety detection specifically comprises the following steps:

[0051] S1: Place the solid food directly under the rotating drum 4, control the linear motor to move the lifting plate 6, the fixed semicircular plate 9 and the rotating semicircular plate 11 upward, and move the food safety detection rapid sampler downward as a whole, control the driving motor 31 to rotate the rotating drum 4, and the sharp portion 421 is drilled at the sampling point, and the solid sample enters the rotating drum 4;

[0052] S2: The food safety detection rapid sampler moves upward as a whole, the rotating drum 4 leaves the food, and the limit block 431 limits the solid sample under the action of the elastic sheet 432;

[0053] S3: Control the linear motor to move the lifting plate 6 downward, and the fixed semicircular plate 9 and the rotating semicircular plate 11 push the solid sample in the rotating cylinder 4 out;

[0054] S4: When it is necessary to sample the liquid food, the drum 4 is slightly tilted, the liquid food is placed under the drum 4, the servo motor is controlled to rotate the semicircular plate 11 180 degrees, the food safety detection rapid sampler moves downward as a whole, and the liquid sample enters the drum 4;

[0055] S5: Control the servo motor to rotate the rotating semicircular plate 11 180 degrees, control the linear motor to move the lifting plate 6, the fixed semicircular plate 9 and the rotating semicircular plate 11 upward, and the food safety detection rapid sampler moves upward as a whole. Control the servo motor to open the rotating semicircular plate 11, and the liquid sample flows out of the drum 4 for detection.

[0056] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Claims

1. A food safety detection rapid sampler, comprising a housing (1), characterized in that: The outer side of the shell (1) is connected to a mounting frame (2); the bottom of the shell (1) is connected to a mounting shell (3); a rotating drum (4) driven by a driving mechanism is rotatably connected to the mounting shell (3); a connecting shell (5) is connected to the side of the shell (1); a lifting plate (6) driven by a linear motor is slidably connected to the inside of the connecting shell (5); a hollow connecting rod (7) is connected to the bottom of the lifting plate (6); the connecting rod (7) slides into the inside of the rotating drum (4); a sliding block (8) located inside the rotating drum (4) is connected to the lower part of the connecting rod (7); a fixed semicircular plate (9) is connected to the bottom end of the connecting rod (7); a rotating rod (10) driven by a servo motor is rotatably connected to the lifting plate (6); the rotating rod (10) is located inside the connecting rod (7); and a rotating semicircular plate (11) is connected to the bottom end of the rotating rod (10).

2. A food safety detection rapid sampler according to claim 1, characterized in that: The driving mechanism comprises a driving motor (31), the mounting shell (3) is connected to the driving motor (31), and the output shaft of the driving motor (31) is transmitted to the rotating drum (4) via a gear set (32).

3. A food safety detection rapid sampler according to claim 2, characterized in that: The rotating cylinder (4) is divided into a connecting end (40), a transparent section (41) and a sampling end (42) from top to bottom, and a plurality of sharp portions (421) are provided at intervals in the circumferential direction at the bottom of the sampling end (42).

4. A food safety detection rapid sampler according to claim 3, characterized in that: The food safety detection rapid sampler also includes a limit block (431), and at least two limit blocks (431) are slidably connected to the inner wall of the sampling end (42) at uniform intervals in the circumferential direction, and a slope is provided on one side of the limit block (431) close to the connecting rod (7), and an elastic sheet (432) is connected between the limit block (431) and the sampling end (42).

5. A food safety detection rapid sampler according to claim 4, characterized in that: The outer side of the sliding block (8) is connected to a rubber ring (81), and the sliding block (8) is provided with a plurality of through holes (82) which pass through the sliding block (8) from top to bottom, and each of the through holes (82) is provided with a one-way valve.

6. A food safety detection rapid sampler according to claim 5, characterized in that: The food safety detection rapid sampler also includes an internal cleaning mechanism, the internal cleaning mechanism including a four-way tube (121), an annular cavity (124) is formed between the upper inner side of the mounting shell (3) and the outer wall of the connecting end (40), the mounting shell (3) is connected with a four-way tube (121) which is in communication with the annular cavity (124), the four-way tube (121) is slidably connected with a valve stem (122), a circular hole (123) is formed at the lower end of the valve stem (122), and when the valve stem (122) slides upward, the four-way tube (121) is in a conducting state; a water inlet hole (125) which is in communication with the annular cavity (124) is formed in the middle of the connecting end (40), and a sealing ring (126) is connected to the outside of the connecting end (40).

7. A food safety detection rapid sampler according to claim 6, characterized in that: The internal cleaning mechanism also includes a connecting block (131), the lifting plate (6) is connected to a connecting block (131) extending to the outside of the connecting shell (5), the top of the valve stem (122) is connected to a sliding rod (132), both ends of the sliding rod (132) are bent to form a bending portion (1321), and two protrusions (1322) are provided on the upper part of the sliding rod (132), and when the connecting block (131) moves up and down, the connecting block (131) will contact the bending portion (1321); the outer side of the connecting shell (5) is connected to a limiting member (133) located between the two protrusions (1322), and the inner side of the limiting member (133) is provided with a rubber portion (134) in contact with the sliding rod (132).

8. A food safety detection rapid sampler according to claim 7, characterized in that: The food safety detection rapid sampler also includes an external cleaning mechanism, the external cleaning mechanism including an electric slide rail (141), the housing (1) is connected to two electric slide rails (141), the electric slide rails (141) are both installed with lifting rods (142), the bottom ends of the two lifting rods (142) are commonly connected with a mounting plate (143), the mounting plate (143) is connected with a water spray ring (144), the inner side of the water spray ring (144) has a plurality of annularly distributed nozzles, and a hose (145) is connected between the four-way pipe (121) and the water spray ring (144).

9. A food safety detection rapid sampler according to claim 8, characterized in that: The external cleaning mechanism also includes a guide rod (146), the side of the connecting shell (5) is connected to the guide rod (146), a connecting plate (147) is slidably connected to the guide rod (146), the connecting plate (147) is fixedly connected to one of the lifting rods (142), a guide wheel (148) is rotatably connected to the connecting plate (147), and the hose (145) is wound around the guide wheel (148).

10. A rapid sampling method for food safety detection, according to the rapid sampling device for food safety detection as claimed in claim 4, characterized in that: The specific steps include: S1: placing solid food directly below the rotating drum (4), controlling the linear motor to move the lifting plate (6), the fixed semicircular plate (9) and the rotating semicircular plate (11) upward, the food safety detection rapid sampler moving downward as a whole, controlling the driving motor (31) to rotate the rotating drum (4), the sharp portion (421) drilling at the sampling point, and the solid sample entering the rotating drum (4); S2: The food safety detection rapid sampler moves upward as a whole, the rotating drum (4) leaves the food, and the limit block (431) limits the solid sample under the action of the elastic sheet (432); S3: Control the linear motor to move the lifting plate (6) downward, and the fixed semicircular plate (9) and the rotating semicircular plate (11) push out the solid sample in the rotating cylinder (4); S4: When it is necessary to sample the liquid food, the rotating drum (4) is in a slightly tilted state, the liquid food is placed under the rotating drum (4), the servo motor is controlled to rotate the rotating semicircular plate (11) 180 degrees, the food safety detection rapid sampler moves downward as a whole, and the liquid sample enters the rotating drum (4); S5: Control the servo motor to rotate the rotating semicircular plate (11) 180 degrees, control the linear motor to move the lifting plate (6), the fixed semicircular plate (9) and the rotating semicircular plate (11) upward, and the food safety detection rapid sampler moves upward as a whole. Control the servo motor to open the rotating semicircular plate (11), and the liquid sample flows out of the drum (4) for detection.

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