Detection equipment for coliforms in food

Abstract

The invention provides detection equipment for coliforms in food. The detection equipment comprises a box body assembly, a mounting assembly, a diluting assembly, a lifting assembly and a processing assembly, the box body assembly comprises an equipment box; the mounting assembly comprises a mounting bracket; the mounting bracket is connected with a top plate of the equipment box; the dilution assembly comprises a dilution cup, the installation support is detachably and fixedly connected with the dilution cup, and the dilution cup is fixedly communicated with an electromagnetic valve; the lifting assembly comprises a lifting cylinder, the lifting cylinder is connected with symmetrical nozzles, and the lower end of the lifting cylinder is connected with a circular groove ring; the treatment assembly includes a swivel. The invention relates to the technical field of detection, in particular to detection equipment for coliforms in food. Aiming at the defects in the prior art, the invention develops the equipment for detecting the coliform group in the food, the food can be conveniently crushed and diluted, the crushing and stirring blade can be conveniently cleaned, and the situation that the detection result is inaccurate due to the fact that the food is remained on the crushing and stirring blade is avoided.

Description

Technical Field

[0001] The invention relates to the field of detection technology, and in particular to a device for detecting coliform bacteria in food. Background Art

[0002] If there are no strict hygiene standards and quality control systems in the production and processing of food, it is easy to breed various pathogens including E. coli. This may be due to the contamination of the product's processing raw materials and packaging materials, or the contamination of the product by personnel, tools and other production equipment and the environment during the production process, or the incomplete heating of products with heating treatment processes.

[0003] Existing technology, such as the invention patent for the detection method of coliform bacteria in snus, the authorization announcement number is CN111057739B. The recovery rate of coliform bacteria is significantly improved, and the number of coliform bacteria in snus is more realistically detected, providing a reference for the quality of snus.

[0004] At present, there is still a lack of a detection device that can conveniently realize the crushing and dilution of food, and conveniently realize the cleaning of the crushing and mixing blades to avoid food residue thereon, resulting in inaccurate detection results.

[0005] Therefore, in view of the above problems, a detection device for coliform group in food is proposed to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention develops a device for detecting coliform group in food, which is convenient for crushing and diluting food, and convenient for cleaning the crushing and stirring blades to avoid food residue thereon, which causes inaccurate detection results.

[0007] The technical solution to the technical problem solved by the present invention is as follows: the present invention provides a detection device for coliform group in food, comprising: a box assembly, a mounting assembly, a dilution assembly, a lifting assembly and a processing assembly; the box assembly comprises an equipment box; the mounting assembly comprises a mounting bracket, the mounting bracket is connected to the top plate of the equipment box; the dilution assembly comprises a dilution cup, the mounting bracket is detachably fixedly connected to the dilution cup, and the dilution cup is fixedly connected to an electromagnetic valve; the lifting assembly comprises a lifting cylinder, the lifting cylinder is connected to a symmetrical nozzle, and the lower end of the lifting cylinder is connected to a circular groove ring; the processing assembly comprises a swivel, the swivel The circular groove ring is connected with a bearing, and the rotating ring is connected with a symmetrical T-axis. The symmetrical T-axis is respectively connected with a U-groove rod in rotation. The symmetrical U-groove rod is respectively connected with a central axis of a symmetrical driving gear in rotation. The symmetrical U-groove rod is respectively connected with a central axis of a driven gear in bearing. The symmetrical driven gear is respectively engaged with the corresponding driving gear. The central axis of the symmetrical driven gear is respectively connected with a driving bevel gear. The symmetrical U-groove rod is respectively connected with a central axis of a driven bevel gear in bearing. The symmetrical driven bevel gear is respectively engaged with the corresponding driving bevel gear. The central axis of the symmetrical driven bevel gear is respectively connected with a crushing and stirring blade. Weigh a certain mass of food sample and crush it first, pour the diluent into the dilution cup to make a sample homogenate with a mass concentration of ~, rotate the crushing and stirring blade to crush the sample to make it evenly mixed with the diluent, further dilute the mixed solution in multiple increments to the planned concentration to obtain a sample homogenate series, and inoculate 100% of the sample homogenate each time, inoculate it into a sterile plate, and culture the sample homogenate inoculated into the sterile plate. After the culture is completed, count the number of coliform bacteria on the plate and conduct a confirmation test, calculate the number of coliform bacteria in the sample, and complete the detection.

[0008] As an optimization, the mounting bracket is connected to the U frame, the U frame is connected to the L frame, the L frame is connected to the power motor, the output shaft of the power motor passes through the L frame to connect the square hole screw, the square hole screw is threadedly connected to the lifting cylinder, the lifting cylinder is connected to symmetrical guide vertical rods, and the symmetrical guide vertical rods pass through the L frame respectively. By using the square hole screw to thread the lifting cylinder, it is convenient to move the crushing and stirring blade downward to a suitable position, to lower the crushing and stirring blade to a suitable position in the dilution cup, to stir the sample and the diluent, and to mix the sample and the diluent evenly.

[0009] As an optimization, the lifting cylinder is connected to the L cross bar, the L cross bar is connected to the rack, the L frame bearing is connected to the central axis of the transmission gear, the transmission gear meshes with the rack, the transmission gear is connected to the turntable, the edge of the turntable is connected to the power block, the lifting cylinder is rotatably connected to the horizontal axis, the horizontal axis is connected to the vertical slot, the power block is arranged in the vertical slot, the horizontal axis is connected to the inner turntable, the eccentric part of the inner turntable is connected to the power rod, the power rod is arranged in the horizontal slot, the symmetrical guide vertical rods pass through the horizontal slots respectively, the horizontal slot bearings are connected to the guide power vertical rods, the guide power vertical rods pass through the swivel, the guide power vertical rods are connected to the slot plate, the slot plate is rotatably connected to the symmetrical connecting rods, and the symmetrical connecting rods are respectively connected to the central axes of the corresponding driving gears. The turntable is driven to rotate by gear rack engagement. The lower the lifting cylinder is positioned, the higher the power block is located in the vertical slot. When the power block rotates, the vertical slot swings more, so that the rotation angle of the horizontal axis and the inner turntable is larger, that is, the larger the swing angle of the crushing and stirring blade, the more its number of rotations, and the better the stirring, crushing and mixing effect of the sample and the diluent. When the lifting cylinder is raised and the gear rack is engaged, the swing angle of the crushing and stirring blade is smaller, and it is always close to the vertical state. The number of its rotations is small and the speed is slow. When the nozzle sprays the diluent, the diluent washes the crushing and stirring blade to avoid residual sample on the crushing and stirring blade, which leads to inaccurate test results.

[0010] As an optimization, the circular groove ring bearing is connected to the central axis of the pinion gear, the pinion gear meshes with the large gear, the guide power vertical rod passes through the large gear, the large gear is connected to the rotating ring, the pinion gear is connected to the square shaft, and the square shaft is set in the square hole of the square hole screw. By adopting gear meshing, when the power motor rotates, the rotating ring and the crushing and stirring blade rotate around the center of the lifting cylinder, and the crushing and stirring blade swings and rotates in the height direction, so as to stir the food and the diluent, further crush the food, and mix it evenly with the diluent.

[0011] As an optimization, the equipment box is connected to an alarm and a control display, and the alarm, the solenoid valve and the power motor are electrically connected to the control display respectively. By adopting the control display, automatic detection is conveniently realized, and the detection process is visually displayed, which is convenient for observing the detection process.

[0012] As an optimization, a culture component is also included, the culture component includes a rotating motor, the partition of the equipment box is connected to the rotating motor, the output shaft of the rotating motor is connected to a rotating disk, the rotating disk is connected to a group of culture dish positioning slots, and the rotating motor is electrically connected to the control display. A sterile plate is placed in each culture dish positioning slot. The control display controls the solenoid valve to open so that the mixed liquid falls into the sterile plate. After the control display controls the solenoid valve to close, the rotating motor is controlled to rotate so that the rotating disk drives the culture dish positioning slot and the sterile plate to rotate, so that the center of the next sterile plate is aligned with the solenoid valve, which is convenient for culturing the sample evenly.

[0013] The effects provided in the content of the invention are only the effects of the embodiments, rather than all the effects of the invention. The above technical solution has the following advantages or beneficial effects: 1. The device achieves preliminary mixing with the sample by pouring the diluent into the dilution cup; the nozzle is connected to the diluent source with a hose, and when the dilution is gradually diluted to the planned concentration, the diluent source is sprayed from the nozzle to achieve further mixing of the solution; a sterile plate is placed in the culture dish positioning groove, and when the center of the sterile plate is aligned with the solenoid valve, the control display controls the solenoid valve to add the mixed liquid to the sterile plate, so as to facilitate the sample to be cultured evenly.

[0014] 2. This device uses gear rack meshing to drive the turntable to rotate. The lower the lifting cylinder is, the higher the power block is in the vertical slot. When the power block rotates, the vertical slot swings more, making the horizontal axis and the inner turntable rotate at a larger angle, that is, the larger the swing angle of the crushing and stirring blade, the more its self-rotation circles, and the better the mixing, crushing and mixing effect of the sample and the diluent. When the lifting cylinder is raised and the gear rack is meshed, the swing angle of the crushing and stirring blade is smaller, always close to the vertical state, the number of its self-rotation circles is small, and the speed is slow. When the nozzle sprays the diluent, the diluent washes the crushing and stirring blade to avoid residual samples on the crushing and stirring blade, resulting in inaccurate test results. By adopting gear meshing, when the power motor rotates, the swivel and the crushing and stirring blade rotate around the center of the lifting cylinder, and the crushing and stirring blade swings and rotates in the height direction, so as to stir the food and the diluent, further crush the food, and mix it evenly with the diluent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 .

[0018] Figure 3 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 2 .

[0019] Figure 4 The three-dimensional structure of the processing assembly and the lifting assembly of the present invention is shown in FIG. Figure 1 .

[0020] Figure 5 It is a partially cutaway three-dimensional structural schematic diagram of the processing assembly and the lifting assembly of the present invention.

[0021] Figure 6 For the present invention Figure 5 A partial enlarged view of middle A.

[0022] Figure 7 The schematic diagram of the local three-dimensional structure of the processing component of the present invention is shown in FIG. Figure 1 .

[0023] Figure 8 The schematic diagram of the local three-dimensional structure of the processing component of the present invention is shown in FIG. Figure 2 .

[0024] Fig. 9 The three-dimensional structure of the processing assembly and the lifting assembly of the present invention is shown in FIG. Figure 2 .

[0025] In the figure: 1. Box assembly, 11. Alarm, 12. Equipment box, 13. Control display; 2. Installation components, 21. Installation bracket, 22. L-frame, 23. U-frame; 3. a culture assembly, 31. a rotating motor, 32. a rotating disk, 33. a culture dish positioning slot; 4. dilution assembly, 41. solenoid valve, 42. dilution cup; 5. Processing assembly, 51. Horizontal axis, 52. Vertical groove, 53. Crushing and stirring blade, 54. Turntable, 55. Transmission gear, 56. Inner turntable, 57. Power rod, 58. Large gear, 59. Rotating ring, 510. Small gear, 511. Square axis, 512. Power block, 513. Horizontal groove, 514. Guide power vertical rod, 515. T axis, 516. Notch plate, 517. Driving gear, 518. Driven gear, 519. Driven bevel gear, 520. Driving bevel gear, 521. U-groove rod, 522. Connecting rod; 6. Lifting assembly, 61. Power motor, 62. Square hole screw, 63. Lifting cylinder, 64. L cross bar, 65. Rack, 66. Nozzle, 67. Guide vertical rod, 68. Circular groove ring. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in combination with the accompanying drawings. The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention. The orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 9As shown, embodiment 1: a detection device for coliform group in food, comprising: a box assembly 1, a mounting assembly 2, a dilution assembly 4, a lifting assembly 6 and a processing assembly 5; the box assembly 1 comprises an equipment box 12; the mounting assembly 2 comprises a mounting bracket 21, and the mounting bracket 21 is connected to the top plate of the equipment box 12; the dilution assembly 4 comprises a dilution cup 42, and the mounting bracket 21 is detachably fixedly connected to the dilution cup 42, and the dilution cup 42 is fixedly connected to the solenoid valve 41; the lifting assembly 6 comprises a lifting cylinder 63, and the lifting cylinder 63 is connected to a symmetrical nozzle 66, and the lower end of the lifting cylinder 63 is connected to a circular groove ring 68; the processing assembly 5 comprises a swivel 59, and the swivel 59 bearing is connected to the circular groove ring 68, The rotating ring 59 is connected to the symmetrical T-axis 515, and the symmetrical T-axis 515 is respectively rotated to connect to the U-slot rod 521, and the symmetrical U-slot rod 521 is respectively rotated to connect to the central axis of the symmetrical driving gear 517, and the symmetrical U-slot rod 521 is respectively bearing-connected to the central axis of the driven gear 518, and the symmetrical driven gear 518 is respectively meshed with the corresponding driving gear 517, and the central axis of the symmetrical driven gear 518 is respectively connected to the driving bevel gear 520; the symmetrical U-slot rod 521 is respectively bearing-connected to the central axis of the driven bevel gear 519, and the symmetrical driven bevel gear 519 is respectively meshed with the corresponding driving bevel gear 520, and the central axis of the symmetrical driven bevel gear 519 is respectively connected to the crushing and stirring blade 53. A certain mass of food sample is weighed and crushed first, and a diluent is poured into a dilution cup 42 to prepare a sample homogenate with a mass concentration of 1:15-30. The crushing and stirring blade 53 rotates and crushes the sample to make it uniformly mixed with the diluent. The mixed solution is further diluted in 5-fold increments to a planned concentration to obtain a sample homogenate series. Two of the sample homogenates diluted each time are inoculated into a sterile plate, and the sample homogenates inoculated into the sterile plate are cultured. After the culture is completed, the number of coliform bacteria on the plate is counted and a confirmation test is performed to calculate the number of coliform bacteria in the sample to complete the detection.

[0028] The mounting bracket 21 is connected to the U frame 23, the U frame 23 is connected to the L frame 22, the L frame 22 is connected to the power motor 61, the output shaft of the power motor 61 passes through the L frame 22 to connect to the square hole screw 62, the square hole screw 62 is threadedly connected to the lifting cylinder 63, the lifting cylinder 63 is connected to symmetrical guide vertical rods 67, and the symmetrical guide vertical rods 67 respectively pass through the L frame 22. By using the square hole screw 62 to thread the lifting cylinder 63, it is convenient to move the crushing and stirring blade 53 downward to a suitable position, and to lower the crushing and stirring blade 53 to a suitable position of the dilution cup 42, so as to stir the sample and the diluent, and make the sample and the diluent mixed evenly.

[0029] The lifting cylinder 63 is connected to the L cross bar 64, the L cross bar 64 is connected to the rack 65, the L frame 22 bearing is connected to the central axis of the transmission gear 55, the transmission gear 55 meshes with the rack 65, the transmission gear 55 is connected to the turntable 54, the edge of the turntable 54 is connected to the power block 512, the lifting cylinder 63 is rotatably connected to the horizontal axis 51, the horizontal axis 51 is connected to the vertical slot 52, the power block 512 is set in the vertical slot 52, the horizontal axis 51 is connected to the inner turntable 56, the inner turntable The eccentric part of the disk 56 is connected to the power rod 57, and the power rod 57 is arranged in the transverse groove 513. The symmetrical guide vertical rods 67 pass through the transverse grooves 513 respectively. The transverse grooves 513 are bearing-connected to the guide power vertical rods 514. The guide power vertical rods 514 pass through the swivel 59. The guide power vertical rods 514 are connected to the notch plate 516. The notch plate 516 is rotatably connected to the symmetrical connecting rods 522. The symmetrical connecting rods 522 are respectively connected to the central axes of the corresponding driving gears 517. The turntable 54 is driven to rotate by gear rack engagement. The lower the lifting cylinder 63 is positioned, the higher the power block 512 is located in the vertical slot 52. When the power block 512 rotates, the vertical slot 52 swings more, so that the rotation angle of the horizontal axis 51 and the inner turntable 56 is larger, that is, the larger the swing angle of the crushing and stirring blade 53, the more its number of rotations, and the better the stirring, crushing and mixing effect of the sample and the diluent. When the lifting cylinder 63 is raised and the gear rack is engaged, the swing angle of the crushing and stirring blade 53 is smaller, and it is always close to the vertical state. The number of its rotations is small and the speed is slow. When the nozzle 66 sprays the diluent, the diluent rinses the crushing and stirring blade 53 to avoid residual sample on the crushing and stirring blade 53, which leads to inaccurate detection results.

[0030] The equipment box 12 is connected to the alarm 11 and the control display 13, and the alarm 11, the solenoid valve 41 and the power motor 61 are respectively electrically connected to the control display 13. By using the control display 13, automatic detection is conveniently realized, and the detection process is visually displayed, which is convenient for observing the detection process.

[0031] The workflow of this embodiment is: S1: Sterilize relevant equipment.

[0032] S2: Weigh a certain mass of food sample and crush it first, pour the diluent into the dilution cup 42 to make a sample homogenous solution with a mass concentration of 1:15~30. In the initial state, the crushing and stirring blade 53 has a small inclination angle. In this process, the power motor 61 is controlled to rotate first, driving the square hole screw 62 to rotate, so that the lifting component 6 (except the power motor 61 and the square hole screw 62) and the processing component 5 (except the transmission gear 55, the turntable 54 and the power block 512) move downward, and the guide vertical rod 67 moves along the L frame 22. When the rack 65 moves downward, it drives the transmission gear 55 to rotate, the transmission gear 55 drives the turntable 54 to rotate, the turntable 54 drives the power block 512 to swing in the vertical slot 52, the power block 512 drives the vertical slot 52 to swing, the vertical slot 52 drives the horizontal shaft 51 to reciprocate, the horizontal shaft 51 drives the inner turntable 56 to reciprocate, the inner turntable 56 drives the power rod 57 to swing in the horizontal slot 513, the power rod 57 drives the horizontal slot 513 to move along the guide vertical rod 67, and the horizontal slot 513 drives the guide power vertical rod 514 to move along the swivel 59 The guide power vertical rod 514 drives the notch plate 516 to move back and forth, the notch plate 516 drives the connecting rod 522 to swing, the connecting rod 522 drives the driving gear 517 to swing and rotate at the same time, the driving gear 517 drives the U-slot rod 521, the driven gear 518, the driving bevel gear 520, the driven bevel gear 519 and the crushing and stirring blade 53 to swing, the driving gear 517 drives the driven gear 518 and the driving bevel gear 520 to rotate, and the driving bevel gear 520 drives the driven bevel gear 519 and the crushing and stirring blade 53 to reciprocate. When the crushing and stirring blade 53 is in a vertical state and close to the bottom of the dilution cup 42, the power motor 61 is controlled to reciprocate, so that the crushing and stirring blade 53 swings and rotates along the height direction, so as to stir the food and the diluent, and further crush the food and mix it evenly with the diluent.

[0033] S3: The mixed solution of S2 is further diluted step by step by 5 times to the planned concentration to obtain a series of sample homogeneous solutions. The diluent is controlled to be sprayed out from the nozzle 65 each time. Except for the best two times, after each addition of the diluent, the power motor 61 is controlled to rotate first, and then reciprocate to achieve uniform mixing of the sample and the diluent. For the last two times, the power motor 61 is directly controlled to reciprocate slowly to allow the diluent to rinse the crushing and stirring blade 53.

[0034] S4: Select 2 samples from each diluted sample solution in S2 and inoculate them into a sterile plate.

[0035] S5: Cultivate the sample homogenate inoculated into a sterile plate.

[0036] S6: After the culture is completed, count the number of coliform bacteria colonies on the plate and perform a confirmation test to calculate the number of coliform bacteria in the sample.

[0037] Embodiment 2: This embodiment is further elaborated on the basis of embodiment 1, the circular groove ring 68 bearing is connected to the central axis of the pinion 510, the pinion 510 meshes with the large gear 58, the guide power vertical rod 514 passes through the large gear 58, the large gear 58 is connected to the rotating ring 59, the pinion 510 is connected to the square shaft 511, and the square shaft 511 is set in the square hole of the square hole screw 62. By adopting gear meshing, when the power motor 61 rotates, the rotating ring 9 and the crushing and stirring blade 53 rotate around the center of the lifting cylinder 63, and the crushing and stirring blade 53 swings and rotates in the height direction, so as to stir the food and the diluent, and further crush the food and mix it evenly with the diluent.

[0038] The workflow of this embodiment is: When the power motor 61 rotates, the square shaft 511 moves along the square hole screw 62, the square hole screw 62 drives the square shaft 511 and the small gear 510 to rotate, the small gear 510 drives the large gear 58, the swivel 59, the guide power vertical rod 514 and the notch 516 to rotate, the swivel 59 drives the T shaft 515, the U groove rod 521, the driving gear 517, the driven gear 518, the driven bevel gear 519, the driving bevel gear 520, the U groove rod 521 and the connecting rod 522 to rotate around the center of the lifting cylinder 63, so as to facilitate the crushing of food and the uniform mixing of food and diluent.

[0039] Embodiment 3: This embodiment is further described on the basis of Embodiment 1 or 2, and further includes a culture component 3, wherein the culture component 3 includes a rotary motor 31, the partition of the equipment box 12 is connected to the rotary motor 31, the output shaft of the rotary motor 31 is connected to a rotating disk 32, the rotating disk 32 is connected to a group of culture dish positioning grooves 33, and the rotary motor 31 is electrically connected to the control display 13. A sterile plate is placed in each culture dish positioning groove 33. The control display 13 controls the electromagnetic valve 41 to open so that the mixed liquid falls into the sterile plate. After the control display 13 controls the electromagnetic valve 41 to close, the rotary motor 31 is controlled to rotate so that the rotating disk 32 drives the culture dish positioning groove 33 and the sterile plate to rotate, so that the center of the next sterile plate is aligned with the electromagnetic valve 41, so as to facilitate the sample homogenization for culture.

[0040] The workflow of this embodiment is: When executing S2 , a sterile plate is placed in each culture plate positioning groove 33 .

[0041] When executing S4, the control display 13 controls the solenoid valve 41 to open, so that the mixed liquid falls into the sterile plate. After the control display 13 controls the solenoid valve to close, the rotary motor 31 is controlled to rotate, so that the rotating disk 32 drives the culture plate positioning groove 33 and the sterile plate to rotate, so that the center of the next sterile plate is aligned with the solenoid valve 41.

[0042] The device achieves preliminary mixing with the sample by pouring the diluent into the dilution cup 42; by adopting the nozzle 66 and connecting the diluent source with a hose, when the dilution is gradually diluted to the planned concentration by increasing multiples, the diluent source is sprayed from the nozzle 66 to achieve further mixing of the solution; a sterile plate is placed in the culture dish positioning groove 33, and when the center of the sterile plate is aligned with the solenoid valve 41, the control display 13 controls the solenoid valve 41 to add the mixed liquid to the sterile plate, so as to facilitate the sample to be cultured evenly.

[0043] This device utilizes the meshing of gear racks to drive the turntable 54 to rotate. The lower the lifting cylinder 63 is located, the higher the power block 512 is located in the vertical slot 52. When the power block 512 rotates, the vertical slot 52 swings more, so that the rotation angle of the horizontal axis 51 and the inner turntable 56 is larger, that is, the larger the swing angle of the crushing and stirring blade 53, the more its number of rotations, and the better the stirring, crushing and mixing effect of the sample and the diluent. When the lifting cylinder 63 is raised and the gear rack is meshed, the swing angle of the crushing and stirring blade 53 is smaller, and it is always close to the vertical state. The number of its rotations is small and the speed is slow. When the nozzle 66 sprays the diluent, the diluent washes the crushing and stirring blade 53 to avoid residual sample on the crushing and stirring blade 53, which leads to inaccurate detection results. By adopting gear meshing, when the power motor 61 rotates, the rotating ring 9 and the crushing and stirring blade 53 rotate around the center of the lifting cylinder 63, and the crushing and stirring blade 53 swings and rotates in the height direction to stir the food and the diluent, so that the food is further crushed and evenly mixed with the diluent.

[0044] Although the above describes the specific implementation mode of the invention in conjunction with the drawings, it is not intended to limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A device for detecting coliform bacteria in food, characterized in that: include: A box assembly (1), a mounting assembly (2), a dilution assembly (4), a lifting assembly (6) and a processing assembly (5); The box assembly (1) comprises a device box (12); The mounting assembly (2) comprises a mounting bracket (21), wherein the mounting bracket (21) is connected to a top plate of the equipment box (12); The dilution assembly (4) comprises a dilution cup (42), the mounting bracket (21) is detachably fixedly connected to the dilution cup (42), and the dilution cup (42) is fixedly connected to the solenoid valve (41); The lifting assembly (6) comprises a lifting cylinder (63), the lifting cylinder (63) is connected to a symmetrical spray head (66), and the lower end of the lifting cylinder (63) is connected to a circular groove ring (68); The processing assembly (5) comprises a rotating ring (59), the rotating ring (59) is bearing-connected to the circular groove ring (68), the rotating ring (59) is connected to symmetrical T-axes (515), the symmetrical T-axes (515) are respectively rotationally connected to U-slot rods (521), the symmetrical U-slot rods (521) are respectively rotationally connected to the central axes of symmetrical driving gears (517), the symmetrical U-slot rods (521) are respectively bearing-connected to the central axes of driven gears (518), the symmetrical driven gears (518) are respectively meshed with the corresponding driving gears (517), and the central axes of the symmetrical driven gears (518) are respectively connected to driving bevel gears (520); The symmetrical U-groove rods (521) are respectively bearing-connected to the central axis of the driven bevel gears (519), the symmetrical driven bevel gears (519) are respectively meshed with the corresponding driving bevel gears (520), and the central axes of the symmetrical driven bevel gears (519) are respectively connected to the crushing and stirring blades (53).

2. The device for detecting coliform bacteria in food according to claim 1, characterized in that: The mounting bracket (21) is connected to a U-frame (23), the U-frame (23) is connected to an L-frame (22), the L-frame (22) is connected to a power motor (61), an output shaft of the power motor (61) passes through the L-frame (22) to connect to a square-hole screw rod (62), the square-hole screw rod (62) is threadedly connected to the lifting cylinder (63), the lifting cylinder (63) is connected to symmetrical guide vertical rods (67), and the symmetrical guide vertical rods (67) respectively pass through the L-frame (22).

3. The device for detecting coliform bacteria in food according to claim 2, characterized in that: The lifting cylinder (63) is connected to the L cross bar (64), the L cross bar (64) is connected to the rack (65), the L frame (22) is connected to the central axis of the transmission gear (55) through a bearing, the transmission gear (55) is meshed with the rack (65), the transmission gear (55) is connected to the turntable (54), the edge of the turntable (54) is connected to the power block (512), the lifting cylinder (63) is rotatably connected to the horizontal axis (51), the horizontal axis (51) is connected to the vertical slot (52), the power block (512) is arranged in the vertical slot (52), and the horizontal axis (51) is connected to the inner turntable (56). The eccentric part of the inner rotating disk (56) is connected to a power rod (57), the power rod (57) is arranged in a transverse groove (513), the symmetrical guide vertical rods (67) respectively pass through the transverse grooves (513), the transverse grooves (513) are bearing-connected to guide power vertical rods (514), the guide power vertical rods (514) pass through the rotating ring (59), the guide power vertical rods (514) are connected to a notch plate (516), the notch plate (516) is rotatably connected to symmetrical connecting rods (522), and the symmetrical connecting rods (522) are respectively connected to the central axes of the corresponding driving gears (517).

4. The device for detecting coliform bacteria in food according to claim 2, characterized in that: The circular groove ring (68) bearing is connected to the central axis of the pinion gear (510), the pinion gear (510) meshes with the large gear (58), the guide power vertical rod (514) passes through the large gear (58), the large gear (58) is connected to the rotating ring (59), the pinion gear (510) is connected to the square shaft (511), and the square shaft (511) is arranged in the square hole of the square hole screw rod (62).

5. The device for detecting coliform bacteria in food according to claim 2, characterized in that: The equipment box (12) is connected to the alarm (11) and the control display (13), and the alarm (11), the solenoid valve (41) and the power motor (61) are respectively electrically connected to the control display (13).

6. The device for detecting coliform bacteria in food according to claim 1, characterized in that: The device also includes a culture component (3), wherein the culture component (3) includes a rotating motor (31), a partition of the device box (12) is connected to the rotating motor (31), an output shaft of the rotating motor (31) is connected to a rotating disk (32), the rotating disk (32) is connected to a group of culture dish positioning slots (33), and the rotating motor (31) is electrically connected to the control display (13).

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