Food safety detection equipment

Abstract

The invention relates to the technical field of food detection, in particular to food safety detection equipment which comprises a detection table, a centrifugal machine and a mixing machine, a supporting plate is fixedly connected to the top of the detection table, a disc is rotationally connected to one end of the top of the detection table, and the mixing machine is in bolted connection to the eccentric position of the top end of the disc; a sliding groove is formed in the front side of the supporting plate, a top plate is slidably connected to the inner side of the sliding groove, a driving mechanism used for driving the top plate to move is arranged on the rear side of the supporting plate, an uncovering mechanism used for opening a machine cover is arranged on the centrifugal machine, a cylinder is fixedly connected to the bottom of the top plate, and a limiting ring is fixedly connected to the inner bottom end of the cylinder. Through the arrangement of the driving mechanism, the cover opening mechanism, the lower barrel and other structures, test tubes mixed by a mixing machine can be automatically taken into a centrifugal machine, the centrifuged test tubes can be taken out and placed into a test tube base, only the test tubes need to be placed into the mixing machine by detection personnel in the whole process, waiting for a long time is not needed, and the detection efficiency is greatly improved.

Description

Technical Field

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

[0002] Food safety testing is to detect harmful substances in food according to national indicators, mainly some harmful and toxic indicators, such as heavy metals, aflatoxin, etc. An important aspect of food science and engineering is to introduce and apply chemical unit operations, and develop food engineering unit operations, so as to promote the development of the food industry in the direction of large-scale, continuous and automated. However, for fresh aquatic products, multiple tests such as chloramphenicol, malachite green and sulfonamide antibiotics will be carried out. It is necessary to first take samples and add reagents, and then put them into mixers and centrifuges for solid-liquid separation. Then take the supernatant and mix it with the reagents and insert the test strips for testing.

[0003] The prior art discloses a food testing device with a centrifugal oscillation mechanism and an implementation method thereof, with publication number CN115468836B. By setting a rectangular groove, the upper plate and the lower plate can always be located in the rectangular groove when the food is centrifugally tested, and the test tube can be quickly pushed out by setting the lower plate, and the device can be suitable for bottom support of test tubes of different sizes during centrifugal oscillation. By setting a driving wheel, multiple gears can be driven to rotate, and when the gears rotate, the upper plate and the lower plate can be driven to move up and down on the threaded rod, and under the action of the vibration spring, the centrifugal oscillation intensity of the food can be adaptively adjusted during the centrifugal oscillation operation before food testing.

[0004] Although the centrifugal oscillation intensity of food can be adaptively adjusted, there are still some defects in the actual detection process. Due to the low automation efficiency of the detection equipment, when testing sulfonamide antibiotics in fresh aquatic products, the testers are required to put the test tubes into the mixer and centrifuge in turn, and the mixer and centrifuge need to wait for a while to work. Therefore, for large-scale testing, it not only consumes a lot of time of the testers, but also increases the labor intensity of the testers and reduces the detection efficiency.

[0005] Therefore, a food safety detection device is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a food safety detection device.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: a food safety testing equipment, including a testing platform, a centrifuge and a mixer, the top of the testing platform is fixedly connected to a support plate, one end of the top of the testing platform is rotatably connected to a disc, the mixer is bolted to the eccentric point of the top of the disc, the centrifuge is bolted to the other end of the top of the testing platform, a slide groove is provided on the front side of the support plate, a top plate is slidably connected to the inner side of the slide groove, a driving mechanism for driving the top plate to move is provided on the rear side of the support plate, a cover opening mechanism for opening the cover is provided on the centrifuge, and a disc is fixedly connected to the bottom of the top plate. Cylinder, the bottom end of the cylinder is fixedly connected to a limiting ring, the inside of the cylinder is slidably connected with a circular bottom cylinder, the top end of the circular bottom cylinder is provided with a circular groove, the inner side of the circular groove is slidably connected with a circular top cylinder, the bottom of the circular bottom cylinder passes through and is rotatably connected with four lower cylinders, the bottoms of the four lower cylinders are provided with grooves matched with test tube bottle caps, the top of the lower cylinder is slidably connected with a pair of straight rods, the inside of the lower cylinder and on both sides of the groove are provided with adjustment cavities, the bottom of the straight rod passes through the interior of the adjustment cavity, the inner side of the adjustment cavity is slidably connected with an upper right-angle block, and the bottom end of the circular bottom cylinder is provided with a bottle cap screwing mechanism.

[0008] In the above technical scheme, further, the upper right-angle block is arranged through the inner side of the groove, the bottom of the straight rod is inclined and fits with the inclined surface of the upper right-angle block, an upper spring is fixedly connected between the bottom of the upper right-angle block and the inner side of the adjusting chamber, an upper electric telescopic cylinder is fixedly connected to the top of the top plate, the output end of the upper electric telescopic cylinder passes through the top plate and is fixedly connected to the top of the circular top tube, a number of extrusion springs are fixedly connected between the bottom of the circular groove and the bottom of the circular top tube, an electric telescopic cylinder is fixedly connected to the top of the circular top tube, the output end of the lower electric telescopic cylinder is fixedly connected to an extrusion plate, and the bottom of the extrusion plate is in contact with the top of the straight rod.

[0009] In the above technical solution, further, the driving mechanism includes a servo motor, the servo motor is fixedly connected to the side wall of the support plate, the two ends of the rear side of the support plate are fixedly connected to the rear plates, the rear plates are rotatably connected with a threaded rod, the output end of the servo motor passes through one of the side walls of the rear plate and is fixedly connected to the side wall of the threaded rod, and the threaded rod passes through a threaded connection to the inner wall of the top plate.

[0010] In the above technical solution, further, the cover opening mechanism includes a roller, push plates are provided on both sides of the top of the centrifuge, a pair of connecting rods are fixedly connected between the push plates, a sliding seat is slidably connected to the front side of the support plate and located beside the connecting rod, the side wall of the sliding seat is fixedly connected to one of the side walls of the connecting rod, the bottom of one of the push plates is in contact with the switch at the top of the centrifuge, and the top of the other push plate is fixedly connected to a fixed seat, the roller is rotatably connected to the inner side of the fixed seat, the top of the sliding seat is fixedly connected to a moving rod, the top of the top plate is slidably connected to a telescopic rod, the top of the telescopic rod is fixedly connected to a moving wheel, the bottom of the telescopic rod is fixedly connected to a U-shaped seat, and the moving rod is arranged between the U-shaped seats.

[0011] In the above technical solution, further, an adjustment plate is fixedly connected to the front side of the support plate and located on the top of the moving wheel, and the two sides of the adjustment plate are inclined, the outer wall of the wheel of the moving wheel is against the bottom of the adjustment plate, and a lower spring is fixedly connected between the top of the U-shaped seat and the bottom of the top plate.

[0012] In the above technical solution, further, the bottle cap twisting mechanism includes a rotating motor, which is fixedly connected to the bottom of the circular bottom cylinder, and the top of the lower cylinder is fixedly connected to a driven gear, the output end of the rotating motor passes through the inner side of the circular bottom cylinder and is fixedly connected to a driving gear meshing with the driven gear, and a return spring is fixedly connected between the outer wall of the straight rod and the top of the driven gear.

[0013] In the above technical scheme, further, a test tube holder is fixedly connected to the top of the disc and away from the mixer side, four placement slots for placing test tubes are opened on the top of the test tube holder, cavities are opened inside the test tube holder and on both sides of the placement slots, positioning rods are slidably connected inside the cavities, and the top of the positioning rods passes through the top of the test tube holder, and a lower right-angle block is slidably connected to the side close to the cavity, and the lower right-angle blocks are close to each other and pass through the inner side of the placement slot, the bottom of the positioning rod is tilted and fits with the inclined surface of the lower right-angle block, a first spring is fixedly connected between the outer wall of the lower right-angle block and the inner side of the cavity, a second spring is fixedly connected between the outer wall of the positioning rod and the top of the cavity, and the positioning rod is arranged in the lower cylinder so that it can be squeezed into a position.

[0014] In the above technical solution, further, an adjusting motor is fixedly connected to the top of the detection platform, and the output end of the adjusting motor passes through the top of the detection platform and is fixedly connected to the bottom of the disc.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can automatically put the test tube mixed by the mixer into the centrifuge through the arrangement of the driving mechanism, the cover opening mechanism and the lower barrel, and can also take out the centrifuged test tube and put it into the test tube holder. The whole process only requires the test personnel to put the test tube into the mixer without waiting for a long time, which greatly improves the detection efficiency.

[0016] 2. The present invention can automatically remove the test tube bottle cap placed in the test tube holder after centrifugation by setting the bottle cap screwing mechanism, the push rod and the lower right-angle block and other structures, thereby making it impossible for the inspection personnel to operate, thereby further improving the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front three-dimensional structure of the detection device of the present invention; Figure 2 It is a rear-view stereoscopic structural schematic diagram of the detection device of the present invention; Figure 3 It is a schematic diagram of the front three-dimensional structure of the support plate of the present invention; Figure 4 The appended Figure 3 A schematic diagram of the partially enlarged structure at center A; Figure 5 It is a schematic diagram of a partially cutaway three-dimensional structure of the front side of the top plate of the present invention; Figure 6 The appended Figure 5 A schematic diagram of the partially enlarged structure at B in the middle; Figure 7 It is a bottom-up three-dimensional structural schematic diagram of the disc and the regulating motor of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the lower tube of the present invention in full cutaway from the front; Fig. 9 It is a schematic diagram of a partial front and full cutaway three-dimensional structure of a test tube holder of the present invention; Fig.10 It is a schematic diagram of the overall appearance structure of the centrifuge and the cover opening mechanism of the present invention.

[0018] In the figure: 1, test table; 2, centrifuge; 3, mixer; 4, support plate; 5, disc; 6, slide; 7, top plate; 8, cylinder; 9, limit ring; 10, round bottom cylinder; 11, round top cylinder; 12, lower cylinder; 13, groove; 14, straight rod; 15, upper right-angle block; 16, upper spring; 17, upper electric telescopic cylinder; 18, extrusion spring; 19, extrusion plate; 20, servo motor; 21, back plate; 22, threaded rod; 23, roller; 24, push plate ; 25. Connecting rod; 26. Sliding seat; 27. Fixed seat; 28. Moving rod; 29. ​​Telescopic rod; 30. Moving wheel; 31. U-shaped seat; 32. Adjusting plate; 33. Lower spring; 34. Rotating motor; 35. Driven gear; 36. Driving gear; 37. Reset spring; 38. Test tube holder; 39. Placement slot; 40. Positioning rod; 41. Lower right-angle block; 42. First spring; 43. Second spring; 44. Adjusting motor; 45. Lower electric telescopic cylinder. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] like Figure 1-10The food safety testing equipment shown in the figure comprises a testing platform 1, a centrifuge 2 and a mixer 3. Position sensors are provided on the centrifuge 2 and the mixer 3 to prevent the test tube position from deviating from the position of the lower cylinder 12 after rotation, mixing and centrifugation, thereby affecting the normal operation of the device. The structure of opening the machine cover by pressing the switch on the centrifuge 2 is a mature technology in the prior art and will not be described in detail here. At the same time, the centrifuge 2 and the mixer 3 are both controlled by a controller and can automatically start and stop in coordination. A support plate 4 is fixedly connected to the top of the testing platform 1, a disc 5 is rotatably connected to one end of the top of the testing platform 1, the mixer 3 is bolted to the eccentric point of the top of the disc 5, and the centrifuge 2 is bolted to the other end of the top of the testing platform 1. A slide groove 6 is provided on the front side of the support plate 4, a top plate 7 is slidably connected to the inner side of the slide groove 6, a driving mechanism for driving the top plate 7 to move is provided on the rear side of the support plate 4, and a driving mechanism for opening the machine cover is provided on the centrifuge 2. The opening mechanism of the lid, the bottom of the top plate 7 is fixedly connected with a cylinder 8, the bottom end of the cylinder 8 is fixedly connected with a limiting ring 9, the inside of the cylinder 8 is slidably connected with a circular bottom cylinder 10, the top end of the circular bottom cylinder 10 is provided with a circular groove, the inner side of the circular groove is slidably connected with a circular top cylinder 11, the sliding of the circular top cylinder 11 in the circular bottom cylinder 10 can be limited by the limiting ring 9 to prevent the circular top cylinder 11 from sliding out of the circular bottom cylinder 10, thereby ensuring that the clamped test tube will not fall, the bottom of the circular bottom cylinder 10 is rotatably connected with four lower cylinders 12, the bottom of the four lower cylinders 12 are provided with grooves 13 adapted to the test tube bottle caps, the top of the lower cylinder 12 is slidably connected with a pair of straight rods 14, the lower cylinder 12 is provided with an adjustment cavity inside and on both sides of the groove 13, the bottom of the straight rod 14 is arranged inside the adjustment cavity, the inner side of the adjustment cavity is slidably connected with an upper right-angle block 15, and the bottom end of the circular bottom cylinder 10 is provided with a bottle cap screwing mechanism; The upper right-angle block 15 is arranged to pass through the inner side of the groove 13, the bottom of the straight rod 14 is inclined and fits with the inclined surface of the upper right-angle block 15, an upper spring 16 is fixedly connected between the bottom of the upper right-angle block 15 and the inner side of the adjustment chamber, an upper electric telescopic cylinder 17 is fixedly connected to the top of the top plate 7, the output end of the upper electric telescopic cylinder 17 passes through the top plate 7 and is fixedly connected to the top of the circular top tube 11, a plurality of extrusion springs 18 are fixedly connected between the bottom of the circular groove and the bottom of the circular top tube 11, a lower electric telescopic cylinder 45 is arranged at the top of the circular top tube 11, and an extrusion plate 19 is fixedly connected to the output end of the lower electric telescopic cylinder 45, and the bottom of the extrusion plate 19 is in contact with the top of the straight rod 14; The driving mechanism includes a servo motor 20, which is fixedly connected to the side wall of the support plate 4, and the two ends of the rear side of the support plate 4 are fixedly connected to the rear plates 21, and the rear plates 21 are rotatably connected with the threaded rod 22. The output end of the servo motor 20 passes through one of the side walls of the rear plate 21 and is fixedly connected to the side wall of the threaded rod 22, and the threaded rod 22 passes through and is threadedly connected to the inner wall of the top plate 7; When testing food, first put a certain amount of food into a test tube, then add the test reagent according to the regulations, then put four test tubes into the mixer 3, turn on the mixer 3 for mixing, and after the mixing reaches the specified time, the controller will control the mixer 3 to stop, and at the same time control the servo motor 20 to start and drive the threaded rod 22 to rotate, thereby driving the threaded top plate 7 to slide, so that the cylinder 8 moves to the top of the mixer 3, and then control the servo motor 20 to stop running, and then control the upper electric telescopic cylinder 17 to start and drive the circular top cylinder 11 and the circular bottom cylinder 10 to slide downward, and at the same time drive the lower cylinder 12 to move downward to insert the groove 13 into the test tube bottle cap, and then control the lower electric telescopic cylinder 45 to start and drive the extrusion plate 19 to move downward, thereby squeezing multiple straight rods 14 to slide downward, and compressing the reset spring at the same time. 37, the upper right-angle block 15 is squeezed by the inclined surface at the bottom of the straight rod 14 to slide toward the adjacent side, so that the test tube bottle cap is clamped by the upper right-angle block 15 (it should be noted that a non-slip pad can be provided on the adjacent side of the upper right-angle block 15 to ensure the stability of the clamping of the test tube bottle cap), and then the upper electric telescopic cylinder 17 is controlled to start pulling the circular top cylinder 11, the circular bottom cylinder 10 and the lower cylinder 12 to move downward, thereby driving the test tube out of the mixer 3, and then the servo motor 20 can be controlled to start moving the cylinder 8 to the top of the centrifuge 2, and the above operation is repeated in reverse to place the test tube into the centrifuge 2, and after the centrifugation is completed, the centrifuged test tube is taken out and placed in the test tube holder 38 through the programmed program, so that the test personnel only need to put the test tube into the mixer 3 in the whole process, without waiting for a long time, which greatly improves the detection efficiency.

[0022] The cover opening mechanism includes a roller 23, push plates 24 are provided on both sides of the top of the centrifuge 2, a pair of connecting rods 25 are fixedly connected between the push plates 24, a sliding seat 26 is slidably connected to the front side of the support plate 4 and located beside the connecting rod 25, and the side wall of the sliding seat 26 is fixedly connected to one of the side walls of the connecting rod 25, the bottom of one of the push plates 24 is in contact with the switch at the top of the centrifuge 2, and the top of the other push plate 24 is fixedly connected to a fixed seat 27, the roller 23 is rotatably connected to the inner side of the fixed seat 27, the top of the sliding seat 26 is fixedly connected to a moving rod 28, the top of the top plate 7 is slidably connected to a telescopic rod 29, the top of the telescopic rod 29 is fixedly connected to a moving wheel 30, the bottom of the telescopic rod 29 is fixedly connected to a U-shaped seat 31, and the moving rod 28 is arranged between the U-shaped seats 31; An adjustment plate 32 is fixedly connected to the front side of the support plate 4 and located on the top of the moving wheel 30, and the two sides of the adjustment plate 32 are inclined, the outer wall of the wheel of the moving wheel 30 is against the bottom of the adjustment plate 32, and a lower spring 33 is fixedly connected between the top of the U-shaped seat 31 and the bottom of the top plate 7; When the lower cylinder 12 takes the test tube out of the mixer 3 and puts it into the centrifuge 2, the servo motor 20 drives the top plate 7 to move, thereby driving the telescopic rod 29 and the U-shaped seat 31 to move. Then, when the moving wheel 30 moves to the side of the adjusting plate 32, the inclined surface of the side wall of the adjusting plate 32 gradually squeezes the moving wheel 30 downward, and at the same time pushes the telescopic rod 29 and the U-shaped seat 31 to slide downward, and stretches the lower spring 33, thereby inserting the moving rod 28 into the inner side of the U-shaped seat 31. Then, through the continued movement of the top plate 7, the moving rod 28, the sliding seat 26, the push plate 24 and the connecting rod 25 are pushed to slide through the U-shaped seat 31, so that the push plate 24 away from the side of the disc 5 is moved out of the cover of the centrifuge 2, and at the same time, the other push plate 24 squeezes the switch of the cover of the centrifuge 2, thereby pushing the switch. The top plate 7 moves downward to open the cover of the centrifuge 2, and then the cover is flipped open under the action of the spring, and then the moving wheel 30 on the top plate 7 moves to the other side of the adjusting plate 32, thereby releasing the squeezing of the moving wheel 30, and then the telescopic rod 29 is pushed to reset under the elastic force of the lower spring 33, and the U-shaped seat 31 is driven to slide out of the moving rod 28, thereby releasing the thrust on the moving rod 28, and then the top plate 7 moves to the top of the centrifuge 2, and the test tube is placed in the centrifuge 2 by controlling the upper electric telescopic cylinder 17, and the servo motor 20 is controlled to move in the reverse direction to remove the top plate 7, and the above operation is repeated in the reverse direction, and the cover of the centrifuge 2 is covered by the fixed seat 27 and the roller 23. After centrifugation, the above operation can be repeated here to remove the test tube, so that the inspection personnel do not need to open the centrifuge 2, further improving the convenience of the device.

[0023] In order to automatically remove the test tube bottle cap that has been centrifuged and placed in the test tube holder 38, the bottle cap screwing mechanism includes a rotating motor 34, which is fixedly connected to the bottom of the circular bottom cylinder 10, and the top of the lower cylinder 12 is fixedly connected to a driven gear 35, and the output end of the rotating motor 34 passes through the inner side of the circular bottom cylinder 10 and is fixedly connected to a driving gear 36 that meshes with the driven gear 35, and a return spring 37 is fixedly connected between the outer wall of the straight rod 14 and the top of the driven gear 35; A test tube holder 38 is fixedly connected to the top of the disc 5 and away from the mixer 3. Four placement slots 39 for placing test tubes are provided on the top of the test tube holder 38. Cavities are provided inside the test tube holder 38 and on both sides of the placement slots 39. Positioning rods 40 are slidably connected inside the cavities, and the top of the positioning rods 40 penetrates the top of the test tube holder 38. A lower right-angle block 41 is slidably connected to one side of the cavity, and the lower right-angle blocks 41 are close to each other and penetrate the inner side of the placement slots 39. The bottom of the positioning rod 40 is tilted and fits with the inclined surface of the lower right-angle block 41. A first spring 42 is fixedly connected between the outer wall of the lower right-angle block 41 and the inner side of the cavity. A second spring 43 is fixedly connected between the outer wall of the positioning rod 40 and the top of the cavity. The positioning rod 40 is arranged in a position where the lower cylinder 12 can be squeezed. When the driving mechanism drives the top plate 7 to move above the test tube holder 38, the upper electric telescopic cylinder 17 can be controlled to start pushing the circular top cylinder 11 to move downward, and at the same time drive the circular bottom cylinder 10 and the lower cylinder 12 to move downward, so as to insert the clamped test tube into the placement slot 39. At the same time, the bottom of the lower cylinder 12 will push the positioning rod 40 to slide downward, and stretch the second spring 43, and then squeeze the lower right-angle block 41 to slide to the closer side through the inclined surface at the bottom of the positioning rod 40, and at the same time stretch the first spring 42. Then, when the test tube is completely inserted into the placement slot 39, the closer side of the lower right-angle block 41 will also clamp the test tube (it should be noted that an anti-slip pad can be provided on the closer side of the lower right-angle block 41 to ensure the clamping effect of the test tube. At the same time, the test tube moves downward while the lower right-angle block 41 is gradually clamped, and the test tube also moves to the lowest end of the placement slot 39 when clamped). At the same time, the circular bottom cylinder 10 moves to the top of the limit ring 9, and then the rotating motor 34 can be controlled to start driving the driving gear 36 to rotate, thereby driving multiple The meshing driven gear 35 rotates, and at the same time drives the lower cylinder 12 to rotate on the circular bottom cylinder 10, and the lower right-angle block 41 at this time clamps the bottom of the test tube, so that multiple test tube bottle caps are screwed out, and at the same time the straight rod 14 moves at the bottom of the extrusion plate 19, and the bottom of the lower cylinder 12 moves at the top of the positioning rod 40. During the rotation, the circular bottom cylinder 10 is connected to the cylinder 8 by sliding up and down, so it will not rotate together. At the same time, since the thread on the test tube bottle cap is spirally upward, the circular bottom cylinder 10 will be gradually pushed downward to compress the extrusion spring 18 during the rotation, and the controller will control the lower electric telescopic cylinder 45 to contract to avoid getting tighter and tighter. Finally, when the bottle cap is screwed out, the upper electric telescopic cylinder 17 can be controlled to move upward. It should be noted here that a collection frame can be placed on the test bench 1 before use, and the screwed-out test tube bottle cap can be moved to the top of the collection frame after being removed from the test tube seat 38, and the lower electric telescopic cylinder 45 can be controlled to reset and discharge the screwed-out bottle cap into the collection frame.

[0024] In order to be able to quickly change the position between the mixer 3 and the test tube holder 38, an adjusting motor 44 is fixedly connected to the top of the test bench 1, and the output end of the adjusting motor 44 passes through the top of the test bench 1 and is fixedly connected to the bottom of the disc 5. By setting the adjusting motor 44, when the test tube is taken away from the mixer 3, the adjusting motor 44 can be controlled to start and drive the disc 5 to rotate, thereby changing the position between the test tube holder 38 and the mixer 3. It should be noted that the adjusting motor 44 is controlled by the controller, and the adjusting motor 44 can be automatically controlled to start when the lower barrel 12 takes the test tube from the mixer 3, and the mixer 3 is rotated away from under the top plate 7, so that the inspector can put in the next batch of test tubes, and when the bottle cap screwing mechanism is completed, the adjusting motor 44 can be controlled to start to change the position of the mixer 3 and the test tube holder 38.

[0025] The basic principles, main features and advantages of the present invention are shown and described above.

[0026] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A food safety testing device, comprising a testing table (1), a centrifuge (2) and a mixer (3), characterized in that: The top of the detection platform (1) is fixedly connected to a support plate (4), one end of the top of the detection platform (1) is rotatably connected to a disc (5), the mixer (3) is bolted to an eccentric position of the top of the disc (5), the centrifuge (2) is bolted to the other end of the top of the detection platform (1), a slide groove (6) is provided on the front side of the support plate (4), a top plate (7) is slidably connected to the inside of the slide groove (6), a driving mechanism for driving the top plate (7) to move is provided on the rear side of the support plate (4), a cover opening mechanism for opening the cover is provided on the centrifuge (2), a cylinder (8) is fixedly connected to the bottom of the top plate (7), a limit ring (9) is fixedly connected to the bottom end of the cylinder (8), and the cylinder (8) A circular bottom cylinder (10) is slidably connected inside, a circular groove is provided at the top end of the circular bottom cylinder (10), a circular top cylinder (11) is slidably connected inside the circular groove, four lower cylinders (12) are rotatably connected through the bottom of the circular bottom cylinder (10), the bottoms of the four lower cylinders (12) are provided with grooves (13) adapted to the test tube bottle caps, a pair of straight rods (14) are slidably connected through the tops of the lower cylinders (12), an adjustment cavity is provided inside the lower cylinder (12) and on both sides of the grooves (13), the bottom of the straight rod (14) is provided through the inside of the adjustment cavity, an upper right-angle block (15) is slidably connected inside the adjustment cavity, and a bottle cap screwing mechanism is provided at the bottom end of the circular bottom cylinder (10).

2. The food safety testing device according to claim 1, characterized in that: The upper right-angle block (15) is arranged to pass through the inner side of the groove (13); the bottom of the straight rod (14) is arranged to be inclined and fits with the inclined surface of the upper right-angle block (15); an upper spring (16) is fixedly connected between the bottom of the upper right-angle block (15) and the inner side of the adjustment chamber; an upper electric telescopic cylinder (17) is fixedly connected to the top of the top plate (7); the output end of the upper electric telescopic cylinder (17) passes through the top plate (7) and is fixedly connected to the top of the circular top cylinder (11); a plurality of extrusion springs (18) are fixedly connected between the bottom of the circular groove and the bottom of the circular top cylinder (11); a lower electric telescopic cylinder (45) is arranged at the top of the circular top cylinder (11); the output end of the lower electric telescopic cylinder (45) is fixedly connected to an extrusion plate (19); and the bottom of the extrusion plate (19) contacts the top of the straight rod (14).

3. The food safety testing device according to claim 1, characterized in that: The driving mechanism comprises a servo motor (20), the servo motor (20) being fixedly connected to the side wall of the support plate (4), the two ends of the rear side of the support plate (4) being fixedly connected to rear plates (21), the rear plates (21) being rotatably connected to a threaded rod (22), the output end of the servo motor (20) passing through one of the side walls of the rear plate (21) being fixedly connected to the side wall of the threaded rod (22), and the threaded rod (22) passing through and being threadedly connected to the inner side wall of the top plate (7).

4. The food safety testing device according to claim 1, characterized in that: The cover opening mechanism comprises a roller (23), push plates (24) are provided on both sides of the top of the centrifuge (2), a pair of connecting rods (25) are fixedly connected between the push plates (24), a sliding seat (26) is slidably connected to the front side of the support plate (4) and located beside the connecting rod (25), the side wall of the sliding seat (26) is fixedly connected to the side wall of one of the connecting rods (25), the bottom of one of the push plates (24) contacts the switch at the top of the centrifuge (2), the top of the other push plate (24) is fixedly connected to a fixed seat (27), the roller (23) is rotatably connected to the inner side of the fixed seat (27), the top of the sliding seat (26) is fixedly connected to a moving rod (28), the top of the top plate (7) is penetrated by a telescopic rod (29) and is slidably connected, the top of the telescopic rod (29) is fixedly connected to a moving wheel (30), the bottom of the telescopic rod (29) is fixedly connected to a U-shaped seat (31), and the moving rod (28) is arranged between the U-shaped seats (31).

5. The food safety testing device according to claim 4, characterized in that: An adjustment plate (32) is fixedly connected to the front side of the support plate (4) and located on the top of the moving wheel (30), and the two sides of the adjustment plate (32) are arranged obliquely, the outer wall of the wheel of the moving wheel (30) abuts against the bottom of the adjustment plate (32), and a lower spring (33) is fixedly connected between the top of the U-shaped seat (31) and the bottom of the top plate (7).

6. The food safety testing device according to claim 1, characterized in that: The bottle cap screwing mechanism comprises a rotating motor (34), the rotating motor (34) being fixedly connected to the bottom of the circular bottom cylinder (10), the top of the lower cylinder (12) being fixedly connected to a driven gear (35), the output end of the rotating motor (34) passing through the inner side of the circular bottom cylinder (10) being fixedly connected to a driving gear (36) meshing with the driven gear (35), and a return spring (37) being fixedly connected between the outer wall of the straight rod (14) and the top of the driven gear (35).

7. The food safety testing device according to claim 1, characterized in that: A test tube holder (38) is fixedly connected to the top of the disk (5) and the side away from the mixer (3). Four placement slots (39) for placing test tubes are provided on the top of the test tube holder (38). Cavities are provided inside the test tube holder (38) and on both sides of the placement slots (39). Positioning rods (40) are slidably connected to the inside of the cavities. The top of the positioning rods (40) penetrates the top of the test tube holder (38). The sides of the cavities close to the cavities are slidably connected to lower right-angle blocks ( 41), and the lower right-angle blocks (41) are arranged close to each other and penetrate the inner side of the placement groove (39), the bottom of the positioning rod (40) is arranged obliquely and fits with the inclined surface of the lower right-angle block (41), a first spring (42) is fixedly connected between the outer wall of the lower right-angle block (41) and the inner side of the cavity, a second spring (43) is fixedly connected between the outer wall of the positioning rod (40) and the top end of the cavity, and the positioning rod (40) is arranged on the lower tube (12) so as to be squeezed into a position.

8. The food safety testing device according to claim 1, characterized in that: An adjusting motor (44) is fixedly connected to the top of the detection platform (1), and an output end of the adjusting motor (44) passes through the top of the detection platform (1) and is fixedly connected to the bottom of the disc (5).

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