Performance detection device for food microorganisms

Abstract

The invention relates to the technical field of food detection, in particular to a food microorganism performance detection device which comprises an outer protection box, one end of the outer protection box is open, the open end of the outer protection box is fixedly connected with a culture box, a concave base is fixedly installed at the bottom of the outer protection box, one end of the concave base extends into the culture box, and the other end of the concave base extends into the culture box. A lead screw is rotationally connected between two side plates of the concave base, the lead screw is driven by a motor shaft of a servo motor fixedly installed on one side of the concave base, the lead screw is sleeved with a moving table, and the upper end of the moving table is fixedly connected with a supporting table; the device has the beneficial effects that when a nutrient solution needs to be added into the culture dish, the feeding pipe corresponding to the liquid needing to be added is moved to the position over the culture dish by adjusting the translation plate, the liquid in the storage box is pumped out through the pump body, then the liquid is fed into the feeding pipe through the feeding hose, and the liquid drips downwards into the culture dish along the feeding pipe.

Description

Technical Field

[0001] The invention relates to the technical field of food detection, in particular to a performance detection device for food microorganisms. Background Art

[0002] Food microbiological testing is a testing method that uses the theories and methods of microbiology to test the types, quantity, properties of microorganisms in food and their impact on human health, in order to determine whether the food meets the quality standards. Food microbiological testing is one of the important indicators for measuring food hygiene quality, and is also one of the scientific bases for determining whether the inspected food is edible. Through food microbiological testing, the food processing environment and food hygiene conditions can be judged, and the degree of bacterial contamination of food can be correctly evaluated, providing a scientific basis for various health management tasks.

[0003] When testing microorganisms in food, the sample needs to be placed in an incubator through a culture dish to culture, so that the microorganisms can multiply rapidly, and then the sample is taken out and observed under a microscope. During the culture process, various parameters such as temperature and humidity of the culture environment need to remain stable. During the detection process, in order to obtain more comprehensive data, one or more samples are often taken out of the incubator for testing at intervals of time, such as 1h, 12h, etc. The specific time is selected according to actual needs; but when taking the culture dish, it is often necessary to repeatedly open and close the incubator door, which will cause microorganisms in the external environment to enter the incubator and destroy the culture environment, thereby affecting the final test data. In addition, long-term cultivation requires the addition of nutrient solution to the culture dish. The existing operation method still requires the staff to open the incubator door and add it manually, which not only affects the culture environment in the incubator, but also is inconvenient to add when the space in the incubator is limited. Summary of the invention

[0004] The object of the present invention is to provide a device for detecting the performance of food microorganisms to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a performance detection device for food microorganisms, comprising an outer protective box, one end of the outer protective box is open, the open end of the outer protective box is fixedly connected to an incubator, a concave base is fixedly installed at the bottom of the outer protective box, one end of the concave base extends into the incubator, a screw rod is rotatably connected between two side plates of the concave base, the screw rod is driven by a motor shaft of a servo motor fixedly installed on one side of the concave base, a moving platform is sleeved on the screw rod, and a support platform is fixedly connected to the upper end of the moving platform;

[0006] The upper end of the support table is recessed downward to form an annular limiting groove, in which an annular rotating seat is rotatably connected, the upper end of the annular rotating seat is provided with a plurality of placement grooves in an annular array, in which culture dishes are placed, a locking mechanism is installed in the annular limiting groove, a pushing mechanism is installed at the upper end of the support table, an adding mechanism is installed at the upper end of the outer protective box above the support table, a detection table is fixedly connected to the inner wall of the outer protective box on one side of the support table, and a detection box body is installed on the detection table.

[0007] Preferably, the movable platform is threadedly connected to the lead screw, and the lower end of the movable platform is slidably connected to the bottom of the concave base in a forward and backward manner.

[0008] Preferably, a rotating groove and a groove are provided on the inner side of the annular limiting groove, a discharging port is provided on the upper end of the annular limiting groove, an inner gear ring is fixedly installed on the lower end of the annular rotating seat, a transmission gear is meshed on the inner side of the inner gear ring, the transmission gear is installed in the rotating groove, and the transmission gear is driven by the output shaft of a stepper motor fixedly installed at the lower end of the support platform.

[0009] Preferably, an annular positioning groove is provided on the inner side of the annular limiting groove, and a plurality of fan-shaped sliding blocks are fixedly connected to the inner side of the annular rotating seat in an annular array, and the fan-shaped sliding blocks are slidably connected to the annular positioning groove.

[0010] Preferably, the locking mechanism includes a locking tooth block slidably installed in the groove, the locking tooth block is clamped with the inner gear ring, and the first electric telescopic rod is fixedly installed on one end of the locking tooth block away from the inner gear ring, and the first electric telescopic rod is fixedly installed in the groove.

[0011] Preferably, a mounting groove is provided at the upper end of the support table, one end of the mounting groove is aligned with the discharge port, and the pushing mechanism includes a second electric telescopic rod fixedly installed in the mounting groove, a fan-shaped push block is fixedly installed at the end of the piston rod of the second electric telescopic rod, and an upper pressure plate is fixedly connected to the upper end of the side of the fan-shaped push block.

[0012] Preferably, a rectangular groove is formed through the upper end of the outer protective box downward, and a circular movable groove is formed on the four inner side walls of the rectangular groove. The adding mechanism includes a translation plate slidably installed in the movable groove. A storage box is installed at the upper end of the incubator, and a plurality of pump bodies are fixedly installed on the side of the storage box. The discharge end of the pump body is connected to one end of the feeding hose.

[0013] The other end of the feeding hose is connected to a feeding pipe through a pipe joint. The feeding pipe is vertically fixed and plugged on the translation plate downward, and the lower end of the feeding pipe extends downward to the inner cavity of the outer protection box.

[0014] Preferably, the front side, rear side and bottom of the detection box body are all open, and the rear side of the detection box body is slidably connected with a lifting door, the upper end of the lifting door is fixedly connected to the lower end of the piston rod of the lifting cylinder, the lifting cylinder is fixedly installed on the upper end of the outer protection box, and the lower end of the detection box body is fixedly connected to the upper end of the detection table;

[0015] A through slot is provided on the front side of the outer protection box, and a sealing door is rotatably installed in the through slot through a hinge, and the rear side of the sealing door is tightly fitted with the front side of the detection box body.

[0016] Preferably, the upper end of the detection platform is recessed downward to form a contraction groove, and a limiting mechanism for preventing the culture dish from moving back is installed in the contraction groove.

[0017] Preferably, the limiting mechanism comprises a limiting block rotatably installed in the contraction groove via a rotating shaft, the lower end of the limiting block is fixedly connected to an arc rod, a return spring is sleeved on the arc rod, an arc hole matching the arc rod is opened on the side of the contraction groove, and the arc rod is slidably connected to the arc hole;

[0018] The upper end of the limit block extends upward to the outside of the contraction groove, the upper end of the limit block is a slope, and the two ends of the return spring are respectively in contact with the contraction groove and the limit block.

[0019] Compared with the prior art, the invention has the following advantages:

[0020] 1. When it is necessary to add nutrient solution to the culture dish, the translation plate is adjusted to move the feeding pipe corresponding to the liquid to be added to the top of the culture dish, the liquid in the storage box is pumped out by the pump body, and then the liquid is sent into the feeding pipe through the feeding hose. The liquid drips down along the feeding pipe into the culture dish; it is convenient to add nutrient solution to the culture dish, and there is no need to open the box door to prevent external microorganisms from entering the incubator.

[0021] 2. The inner gear ring is locked by a locking mechanism so that the annular rotating seat cannot rotate, thereby preventing the culture dish from shaking or dislocating during the movement of the support platform.

[0022] 3. When it is necessary to conduct microbial detection on the food sample in the culture dish, first drive the transmission gear to rotate through the output shaft of the stepper motor, the transmission gear drives the inner gear ring to rotate, and the inner gear ring drives the annular rotating seat to rotate along the annular limit groove, so that the placement groove on the annular rotating seat is aligned with the discharge port; the culture dish is moved to the position to be detected by the pushing mechanism, and the limit block in the limit mechanism can prevent the pushing mechanism from sliding back when moving back, so that the culture dish can be accurately placed on the detection table, and then the sample in the culture dish is detected by the detection box body.

[0023] 4. When the culture dish is moved into the main body of the detection box, the lifting door is driven upward and opened by the lifting cylinder. At this time, the sealing door is in a sealed state to prevent external microorganisms from entering the outer protection box; when the culture dish is moved to the position to be tested, the lifting door is driven downward by the lifting cylinder to seal the rear side of the detection box main body; when the test is completed, the sealing door is rotated outward to open, so as to take out the tested culture dish in the detection box main body, and then the sealing door is rotated inward to close, so as to complete the detection operation. The whole operation process will not cause external microorganisms to enter the outer protection box and the incubator, thereby ensuring the stability of the culture environment inside the incubator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural stereogram of the food microorganism performance detection device of the present invention;

[0025] Figure 2 It is a cross-sectional view of the structure of the food microorganism performance detection device of the present invention;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0027] Figure 4 for Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0028] Figure 5 It is a cross-sectional view of the local structure of the outer protection box of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the support platform, annular rotating seat, culture dish and pushing mechanism of the present invention;

[0030] Figure 7 It is a cross-sectional view of the support platform structure of the present invention;

[0031] Figure 8 It is a bottom view of the annular rotating seat and the inner gear ring structure of the present invention;

[0032] Fig. 9 It is an exploded view of the support platform, annular rotating seat, locking mechanism and pushing mechanism structure of the present invention.

[0033] In the figure: 1, outer protection box; 11, rectangular groove; 12, movable groove; 13, incubator; 2, concave base; 21, screw rod; 22, moving platform; 3, support platform; 31, annular limit groove; 32, rotating groove; 33, groove; 34, annular positioning groove; 35, installation groove; 36, discharge port; 4, annular rotating seat; 41, placement groove; 42, fan-shaped slider; 43, inner gear ring; 44, transmission gear; 45, incubator Cultivation dish; 5. Locking gear block; 51. First electric telescopic rod; 6. Second electric telescopic rod; 61. Fan-shaped push block; 62. Upper pressure plate; 7. Storage box; 71. Pump body; 72. Feed hose; 73. Feed pipe; 74. Translation plate; 8. Inspection table; 81. Contraction slot; 82. Inspection box body; 83. Lifting door; 84. Lifting cylinder; 85. Sealing door; 9. Limit block; 91. Arc rod; 92. Return spring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 9 The present invention provides a technical solution: a performance detection device for food microorganisms, comprising an outer protective box 1, one end of the outer protective box 1 is open, an incubator 13 is fixedly connected to the open end of the outer protective box 1, an inlet and outlet are provided on a side of the incubator 13 close to the outer protective box 1, a concave base 2 is fixedly installed at the bottom of the outer protective box 1, one end of the concave base 2 extends into the incubator 13, a box door is installed on one side of the outer protective box 1, an exhaust pipe is installed on the upper end of the outer protective box 1, a screw rod 21 is rotatably connected between two side plates of the concave base 2, the screw rod 21 is driven by a motor shaft of a servo motor fixedly installed on one side of the concave base 2, a moving platform 22 is sleeved on the screw rod 21, and a support platform 3 is fixedly connected to the upper end of the moving platform 22;

[0036] The support platform 3 can enter the incubator 13 along the inlet and outlet, and two left and right sliding doors can be symmetrically arranged on the sides of the inlet and outlet of the incubator 13, so that the inlet and outlet can be closed or sealed. The shape of the sliding door is adjusted according to actual conditions, and the sliding door is stuck on the concave base 2 and the screw rod 21.

[0037] The upper end of the support table 3 is recessed downward and is provided with an annular limit groove 31, in which an annular rotating seat 4 is rotatably connected, and the upper end of the annular rotating seat 4 is provided with a plurality of placement grooves 41 in an annular array, in which culture dishes 45 are placed, and a locking mechanism is installed in the annular limit groove 31, and a pushing mechanism is installed at the upper end of the support table 3, and an adding mechanism is installed at the upper end of the outer protection box 1 above the support table 3, and a detection table 8 is fixedly connected to the inner wall of the outer protection box 1 on one side of the support table 3, and a detection box body 82 is installed on the detection table 8.

[0038] See also Figure 2 The movable platform 22 is threadedly connected to the screw rod 21 , and the lower end of the movable platform 22 is slidably connected to the bottom of the concave base 2 in a forward and backward manner.

[0039] The motor shaft of the servo motor rotates forward or reversely to drive the screw rod 21 to rotate, so that the movable platform 22 slides forward and backward along the concave base 2, and the movable platform 22 drives the support platform 3 to move forward and backward, so that the support platform 3 moves into the incubator 13, or moves from the incubator 13 to the outer protective box 1.

[0040] See also Figure 2 , Figures 6 to 9 A rotating groove 32 and a groove 33 are provided on the inner side of the annular limiting groove 31, a discharging port 36 is provided on the upper end of the annular limiting groove 31, an inner gear ring 43 is fixedly installed on the lower end of the annular rotating seat 4, a transmission gear 44 is meshed on the inner side of the inner gear ring 43, and the transmission gear 44 is installed in the rotating groove 32, and the transmission gear 44 is driven by the output shaft of a stepping motor fixedly installed on the lower end of the support platform 3.

[0041] The output shaft of the stepping motor drives the transmission gear 44 to rotate intermittently, so that the transmission gear 44 rotates a certain angle each time, and the transmission gear 44 drives the inner gear ring 43 to rotate intermittently along the annular limiting groove 31, and the inner gear ring 43 drives the annular rotating seat 4 to rotate along the annular limiting groove 31, and the annular rotating seat 4 drives the culture dish 45 to rotate, so that each culture dish 45 rotates to the side of the discharge port 36 in turn and is aligned with the discharge port 36;

[0042] An annular positioning groove 34 is formed inside the annular limiting groove 31 . A plurality of sector-shaped sliders 42 are fixedly connected in an annular array to the inner side of the annular rotating seat 4 . The sector-shaped sliders 42 are slidably connected to the annular positioning groove 34 .

[0043] When the annular rotating seat 4 rotates, the sector-shaped slider 42 is driven to rotate along the annular positioning groove 34 , so that the annular rotating seat 4 can rotate stably.

[0044] The locking mechanism includes a locking tooth block 5 slidably installed in the groove 33 , the locking tooth block 5 is clamped with the inner gear ring 43 , and a first electric telescopic rod 51 is fixedly installed at one end of the locking tooth block 5 away from the inner gear ring 43 , and the first electric telescopic rod 51 is fixedly installed in the groove 33 .

[0045] When the annular rotating seat 4 does not need to be rotated, the piston rod of the first electric telescopic rod 51 is extended to drive the locking tooth block 5 to move close to the inner gear ring 43, so that the locking tooth block 5 is engaged with the inner gear ring 43, thereby locking the inner gear ring 43. Since the inner gear ring 43 and the annular rotating seat 4 are fixedly connected, when the inner gear ring 43 cannot rotate after being locked, the annular rotating seat 4 also cannot rotate;

[0046] When the annular rotating seat 4 needs to rotate, the piston rod of the first electric telescopic rod 51 is retracted to separate the locking tooth block 5 from the inner gear ring 43. At this time, the inner gear ring 43 is driven to rotate by the transmission gear 44, and the inner gear ring 43 drives the annular rotating seat 4 to rotate.

[0047] See also Figure 3 , Figure 6 and Fig. 9 A mounting groove 35 is provided at the upper end of the support platform 3, one end of the mounting groove 35 is aligned with the discharge port 36, and the pushing mechanism includes a second electric telescopic rod 6 fixedly installed in the mounting groove 35, and a fan-shaped push block 61 is fixedly installed at the end of the piston rod of the second electric telescopic rod 6, and an upper pressure plate 62 is fixedly connected to the upper end of the side of the fan-shaped push block 61.

[0048] When the culture dish 45 on the annular rotating seat 4 needs to be sent into the detection box body 82, firstly, a placement slot 41 on the annular rotating seat 4 is rotated to the side of the discharge port 36 so that the placement slot 41 is aligned with the discharge port 36;

[0049] At this time, the piston rod of the second electric telescopic rod 6 is extended, so that the fan-shaped push block 61 is stuck on the side of the culture dish 45, and the upper pressure plate 62 is stuck on the upper end of the culture dish 45. At this time, the piston rod of the second electric telescopic rod 6 continues to extend, and the fan-shaped push block 61 and the upper pressure plate 62 cooperate to push the culture dish 45 to move, so that the culture dish 45 moves along the placement groove 41 and the discharge port 36 to the upper end of the detection table 8. Finally, the culture dish 45 moves along the detection table 8 to the detection box body 82, and the sample in the culture dish 45 is detected by the detection box body 82.

[0050] See also Figure 1 , Figure 2 and Figure 5A rectangular groove 11 is provided downwardly through the upper end of the outer protection box 1, and a circular movable groove 12 is provided on the four inner side walls of the rectangular groove 11. The adding mechanism includes a translation plate 74 slidably installed in the movable groove 12, and a handle is fixedly installed on the upper end of the translation plate 74. A storage box 7 is installed on the upper end of the incubator 13, and a plurality of pump bodies 71 are fixedly installed on the side of the storage box 7. The discharge end of the pump body 71 is connected to one end of the feeding hose 72, and the pump body 71 is connected to the storage box 7 through a connecting pipe. A feeding hopper is fixedly installed on the upper end of the storage box 7, and nutrient solution, etc. can be added to the storage box 7 through the feeding hopper;

[0051] The other end of the feeding hose 72 is connected to a feeding pipe 73 via a pipe joint. The feeding pipe 73 is vertically fixed downward and plugged on a translation plate 74 . The lower end of the feeding pipe 73 extends downward to the inner cavity of the outer protective box 1 .

[0052] When it is necessary to add nutrient solution or the like to the culture dish 45, the translation plate 74 is first moved left and right, and the translation plate 74 slides left and right along the movable groove 12, and the multiple feed tubes 73 are driven to move left and right by the translation plate 74, so that one of the feed tubes 73 is directly above the culture dish 45;

[0053] The liquid in the storage box 7 is pumped out by the pump body 71, and then the liquid is sent into the feed pipe 73 through the feed hose 72, and the liquid drips downward along the feed pipe 73 into the culture dish 45;

[0054] The storage box 7 is divided into multiple cavities, each of which can be filled with different liquids. Each liquid can correspond to a pump body 71, a feeding hose 72, and a feeding pipe 73. When a certain liquid needs to be added, the corresponding feeding pipe 73 is moved to the top of the culture dish 45 by adjusting the translation plate 74;

[0055] It is convenient to add nutrient solution and the like into the culture dish 45 , and there is no need to open the door of the culture box to prevent external microorganisms from entering the culture box 13 .

[0056] See also Figure 2 The front side, rear side and bottom of the detection box body 82 are all open. The rear side of the detection box body 82 is slidably connected with a lifting door 83, and the opening of the rear side of the detection box body 82 is sealed by the lifting door 83. The upper end of the lifting door 83 is fixedly connected to the lower end of the piston rod of the lifting cylinder 84, and the lifting cylinder 84 is fixedly installed on the upper end of the outer protection box 1. The lower end of the detection box body 82 is fixedly connected to the upper end of the detection table 8, and the bottom of the detection box body 82 is sealed by the detection table 8;

[0057] A through groove is provided on the front side of the outer protective box 1, and a sealing door 85 is installed in the through groove by rotating through a hinge. The sealing door 85 seals the through groove, and the rear side of the sealing door 85 fits tightly with the front side of the detection box body 82, and the opening on the front side of the detection box body 82 is sealed by the sealing door 85.

[0058] When the sample in the culture dish 45 needs to be tested, the lifting door 83 is first driven upward by the lifting cylinder 84 to open, and the sealing door 85 is in a sealed state. Then the culture dish 45 is pushed into the detection box body 82 by the pushing mechanism, and then the lifting door 83 is driven downward by the lifting cylinder 84 to seal the rear side of the detection box body 82.

[0059] At this time, the sample in the culture dish 45 inside the detection box body 82 is detected. When the detection is completed, the sealing door 85 is rotated outward to open, so that the culture dish 45 after the detection in the detection box body 82 is taken out, and then the sealing door 85 is rotated inward to close, thereby completing the detection operation.

[0060] During the detection of the culture dish 45 , no external microorganisms will enter the culture box 13 , thus ensuring the stability of the culture environment in the culture box 13 .

[0061] See also Figure 2 and Figure 4 The upper end of the detection platform 8 is recessed downward to form a contraction groove 81, and a limiting mechanism for preventing the culture dish 45 from moving back is installed in the contraction groove 81.

[0062] The limiting mechanism includes a limiting block 9 rotatably installed in the contraction groove 81 through a rotating shaft, a curved rod 91 is fixedly connected to the lower end of the limiting block 9, a return spring 92 is sleeved on the curved rod 91, and a curved hole matching the curved rod 91 is opened on the side of the contraction groove 81, and the curved rod 91 is slidably connected to the curved hole;

[0063] The upper end of the limit block 9 extends upward to the outside of the contraction groove 81 . The upper end of the limit block 9 is a slope. Both ends of the return spring 92 abut against the contraction groove 81 and the limit block 9 respectively.

[0064] When the culture dish 45 slides onto the detection table 8, the culture dish 45 pushes the limit block 9 to shrink and rotate into the contraction groove 81. At this time, the limit block 9 can be completely moved into the contraction groove 81 without affecting the normal movement of the culture dish 45. At this time, the limit block 9 squeezes the reset spring 92, and the arc rod 91 is inserted along the arc hole;

[0065] When the culture dish 45 moves to the position to be detected, the culture dish 45 is removed from the limit block 9, and the limit block 9 is rotated upward and reset under the action of the elastic force of the reset spring 92. The limit block 9 can prevent the push mechanism from sliding the culture dish 45 back when it moves back, so that the culture dish 45 can be accurately placed on the detection table 8;

[0066] When the fan-shaped push block 61 in the pushing mechanism moves back, the fan-shaped push block 61 will not contact the limit block 9, so that the fan-shaped push block 61 can move back and forth normally.

[0067] Working principle: After the culture dishes 45 are placed in the placement slots 41 on the annular rotating seat 4 in sequence, when it is necessary to culture, the motor shaft of the servo motor drives the screw 21 to rotate, so that the moving table 22 drives the support table 3 to move into the incubator 13, and the support table 3 drives the culture dishes 45 to move into the incubator 13 through the annular rotating seat 4, so as to carry out culture;

[0068] When it is necessary to add nutrient solution or the like to the culture dish 45, the motor shaft of the servo motor first drives the screw rod 21 to reverse, so that the support table 3 drives the annular rotating seat 4 and the culture dish 45 to move out of the incubator 13 until one side of the support table 3 contacts the side of the detection table 8;

[0069] At this time, by adjusting the translation plate 74, the feed pipe 73 corresponding to the liquid to be added is moved to the top of the culture dish 45, the liquid in the storage box 7 is pumped out by the pump body 71, and then the liquid is sent into the feed pipe 73 through the feed hose 72, and the liquid drips down along the feed pipe 73 into the culture dish 45;

[0070] It is convenient to add nutrient solution and the like into the culture dish 45 , and there is no need to open the door of the culture box to prevent external microorganisms from entering the culture box 13 .

[0071] During the movement of the support platform 3, the placement groove 41 on the annular rotating seat 4 can be staggered with the discharge port 36, thereby preventing the culture dish 45 from sliding out along the discharge port 36 or getting stuck in the discharge port 36 during the movement; at the same time, the inner gear ring 43 is locked by the provided locking mechanism, so that the annular rotating seat 4 cannot rotate, preventing the culture dish 45 from shaking or dislocating.

[0072] When it is necessary to perform microbial detection on the food sample in the culture dish 45, the output shaft of the stepper motor first drives the transmission gear 44 to rotate, the transmission gear 44 drives the inner gear ring 43 to rotate, and the inner gear ring 43 drives the annular rotating seat 4 to rotate along the annular limiting groove 31, so that the placement groove 41 on the annular rotating seat 4 is aligned with the discharge port 36;

[0073] At this time, the piston rod of the second electric telescopic rod 6 is extended, so that the fan-shaped push block 61 is stuck on the side of the culture dish 45, and the upper pressing plate 62 is stuck on the upper end of the culture dish 45. At this time, the piston rod of the second electric telescopic rod 6 continues to extend, and the fan-shaped push block 61 and the upper pressing plate 62 cooperate to push the culture dish 45 to move, so that the culture dish 45 moves along the placement groove 41 and the discharge port 36 to the upper side of the detection table 8;

[0074] When the culture dish 45 contacts the limiting block 9, the culture dish 45 pushes the limiting block 9 to shrink and rotate into the contraction groove 81 until the limiting block 9 is completely moved into the contraction groove 81;

[0075] When the culture dish 45 moves to the position to be tested, the culture dish 45 is removed from the limit block 9, and the limit block 9 is rotated upward and reset under the action of the elastic force of the reset spring 92. At this time, the limit block 9 is on the outer side of the culture dish 45. The limit block 9 can prevent the pushing mechanism from sliding back when moving back, so that the culture dish 45 can be accurately placed on the testing table 8, and the sample in the culture dish 45 can be tested through the testing box main body 82.

[0076] When the culture dish 45 is moved into the detection box body 82, the lifting cylinder 84 drives the lifting door 83 to move upward and open. At this time, the sealing door 85 is in a sealed state to prevent external microorganisms from entering the outer protection box 1;

[0077] When the culture dish 45 moves to the position to be tested, the lifting cylinder 84 drives the lifting door 83 to move downward to seal the rear side of the testing box body 82;

[0078] When the detection is completed, the sealing door 85 is rotated outward to open, so that the culture dish 45 after detection in the detection box body 82 is taken out, and then the sealing door 85 is rotated inward to close, thereby completing the detection operation. The entire operation process will not cause external microorganisms to enter the outer protection box 1 and the incubator 13, thereby ensuring the stability of the culture environment inside the incubator 13.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the performance of food microorganisms, comprising an outer protective box (1), characterized in that: One end of the outer protective box (1) is open, the open end of the outer protective box (1) is fixedly connected to the incubator (13), a concave base (2) is fixedly installed at the bottom of the outer protective box (1), one end of the concave base (2) extends into the incubator (13), a screw rod (21) is rotatably connected between two side plates of the concave base (2), the screw rod (21) is driven by a motor shaft of a servo motor fixedly installed on one side of the concave base (2), a moving platform (22) is sleeved on the screw rod (21), and the upper end of the moving platform (22) is fixedly connected to a support platform (3); The upper end of the support platform (3) is recessed downward and is provided with an annular limiting groove (31), and an annular rotating seat (4) is rotatably connected in the annular limiting groove (31). The upper end of the annular rotating seat (4) is provided with a plurality of placement grooves (41) in an annular array, and a culture dish (45) is placed in the placement groove (41). A locking mechanism is installed in the annular limiting groove (31), and a pushing mechanism is installed at the upper end of the support platform (3). An adding mechanism is installed at the upper end of the outer protection box (1) above the support platform (3). A detection platform (8) is fixedly connected to the inner wall of the outer protection box (1) on one side of the support platform (3), and a detection box body (82) is installed on the detection platform (8).

2. A performance detection device for food microorganisms according to claim 1, characterized in that: The movable platform (22) is threadedly connected to the screw rod (21), and the lower end of the movable platform (22) is slidably connected to the bottom of the concave base (2) in a forward and backward manner.

3. A device for detecting the performance of food microorganisms according to claim 1, characterized in that: A rotating groove (32) and a groove (33) are provided on the inner side of the annular limiting groove (31); a discharge port (36) is provided on the upper end of the annular limiting groove (31); an inner gear ring (43) is fixedly mounted on the lower end of the annular rotating seat (4); a transmission gear (44) is meshed on the inner side of the inner gear ring (43); the transmission gear (44) is mounted in the rotating groove (32); and the transmission gear (44) is driven by the output shaft of a stepping motor fixedly mounted on the lower end of the support platform (3).

4. A device for detecting the performance of food microorganisms according to claim 3, characterized in that: An annular positioning groove (34) is provided on the inner side of the annular limiting groove (31), and a plurality of fan-shaped sliding blocks (42) are fixedly connected in an annular array on the inner side of the annular rotating seat (4), and the fan-shaped sliding blocks (42) are slidably connected to the annular positioning groove (34).

5. A device for detecting the performance of food microorganisms according to claim 3, characterized in that: The locking mechanism comprises a locking tooth block (5) slidably mounted in the groove (33), the locking tooth block (5) being clamped with the inner gear ring (43), a first electric telescopic rod (51) being fixedly mounted on one end of the locking tooth block (5) away from the inner gear ring (43), and the first electric telescopic rod (51) being fixedly mounted in the groove (33).

6. A device for detecting the performance of food microorganisms according to claim 3, characterized in that: The upper end of the support platform (3) is provided with a mounting groove (35), one end of the mounting groove (35) is aligned with the discharge port (36), and the pushing mechanism comprises a second electric telescopic rod (6) fixedly mounted in the mounting groove (35), a fan-shaped pushing block (61) is fixedly mounted at the end of the piston rod of the second electric telescopic rod (6), and an upper pressure plate (62) is fixedly connected to the upper end of the side of the fan-shaped pushing block (61).

7. A device for detecting the performance of food microorganisms according to claim 1, characterized in that: A rectangular groove (11) is provided downwardly through the upper end of the outer protection box (1), and four inner side walls of the rectangular groove (11) are provided with circular movable grooves (12). The adding mechanism comprises a translation plate (74) slidably installed in the movable groove (12) left and right. A storage box (7) is installed at the upper end of the incubator (13), and a plurality of pump bodies (71) are fixedly installed on the side of the storage box (7), and the discharge end of the pump body (71) is connected to one end of a feeding hose (72); The other end of the feeding hose (72) is connected to a feeding pipe (73) via a pipe joint. The feeding pipe (73) is vertically fixed and plugged onto a translation plate (74) downward. The lower end of the feeding pipe (73) extends downward to the inner cavity of the outer protective box (1).

8. A device for detecting the performance of food microorganisms according to claim 1, characterized in that: The front side, rear side and bottom of the detection box body (82) are all open, and the rear side of the detection box body (82) is slidably connected to a lifting door (83) up and down, and the upper end of the lifting door (83) is fixedly connected to the lower end of the piston rod of the lifting cylinder (84), and the lifting cylinder (84) is fixedly installed on the upper end of the outer protection box (1), and the lower end of the detection box body (82) is fixedly connected to the upper end of the detection table (8); The front side of the outer protection box (1) is provided with a through slot, in which a sealing door (85) is rotatably installed via a hinge, and the rear side of the sealing door (85) is tightly fitted with the front side of the detection box body (82).

9. A device for detecting the performance of food microorganisms according to claim 8, characterized in that: The upper end of the detection platform (8) is recessed downward to form a contraction groove (81), and a limiting mechanism for preventing the culture dish (45) from moving back is installed in the contraction groove (81).

10. A device for detecting the performance of food microorganisms according to claim 9, characterized in that: The limiting mechanism comprises a limiting block (9) rotatably mounted in the contraction groove (81) via a rotating shaft, the lower end of the limiting block (9) is fixedly connected with an arc-shaped rod (91), a return spring (92) is sleeved on the arc-shaped rod (91), a side surface of the contraction groove (81) is provided with an arc-shaped hole matching the arc-shaped rod (91), and the arc-shaped rod (91) is slidably connected to the arc-shaped hole; The upper end of the limit block (9) extends upward to the outside of the contraction groove (81), the upper end of the limit block (9) is a slope, and the two ends of the return spring (92) are respectively in contact with the contraction groove (81) and the limit block (9).

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