Food microorganism detection device and method

Abstract

The invention discloses a food microorganism detection device and method. The food microorganism detection device comprises a device body internally provided with a mounting space, a rotating disc is arranged in the mounting space, and four fixing seats for fixing the cylindrical container are arranged on the upper surface of the rotating disc; the top side face of the device body is provided with a feeding hole, an open hole A, an open hole B and an insertion hole used for insertion of an electrochemical sensor. According to the device, the rotating disc for bearing the cylindrical container is arranged on the device body internally provided with the mounting space, and the feeding hole, the opening A, the opening B and the insertion hole for inserting the electrochemical sensor are formed in the top side surface of the device body, so that a food sample is put into the cylindrical container during use; and the electrochemical sensor in the cylindrical container is used for detection.

Description

Technical Field

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

[0002] The rich nutrients in food provide sufficient material basis for the growth and reproduction of microorganisms, and it is a good culture medium for microorganisms. Therefore, it is easy for microorganisms to grow and reproduce after contaminating food, causing food to spoil and lose its proper nutrients. At the same time, harmful and toxic substances are produced. Once people eat food contaminated by microorganisms, various acute and chronic poisonings will occur, and there may even be long-term effects of carcinogenicity, teratogenicity, and mutagenicity. Therefore, food must be tested for microorganisms before consumption. This is an important means to ensure food quality and food safety.

[0003] However, the existing rapid detection device requires manual preparation of sample reagents in the early stage, and the preparation process requires shaking and adding reagents. This process is relatively cumbersome and requires the participation of other instruments, and is not suitable for the scenario of on-the-spot testing. Summary of the invention

[0004] The object of the present invention is to provide a food microorganism detection device, by arranging a rotating disk for carrying a cylindrical container on a device body with an installation space arranged inside, and the top side surface of the device body is provided with a feeding hole, an opening A, an opening B, and a socket for inserting an electrochemical sensor, so that when in use, a food sample can be placed in the cylindrical container and detected by using the electrochemical sensor in the cylindrical container, thereby solving the problems raised by the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention relates to a food microorganism detection device, comprising a device body with an installation space arranged inside; a rotating disk is arranged in the installation space, and four fixing seats for fixing a cylindrical container are arranged on the upper surface of the rotating disk; a feeding hole, an opening A, an opening B, and a jack for inserting an electrochemical sensor are arranged on the top side surface of the device body; a cylindrical body with an open end facing downward is threadedly connected to the opening A, and a movable plate is connected to the inner top side surface of the cylindrical body through a telescopic cylinder A, a through hole A is arranged on the movable plate, and the through holes A located on the upper and lower sides of the movable plate are respectively connected to a bellows and a drain pipe, and a through hole B connected to the bellows and a drain pipe is opened on the inner top side surface of the cylindrical body; at least one L-shaped bracket is arranged on the inner top side surface of the installation space located at the opening B, a rodless cylinder is fixed between the L-shaped bracket and the inner top side surface of the installation space, the slider of the rodless cylinder is connected to a connecting rod, the end of the connecting rod is connected to a ring body sleeved on the outer peripheral side of the cylindrical container, and an ultrasonic dispersing head is arranged on the inner side wall of the ring body.

[0007] Furthermore, the jack is provided with a support ring, and the electrochemical sensor passes through the support ring and is inserted into the cylindrical container.

[0008] Furthermore, the fixing seat includes an opening C opened on the edge side of the rotating disk, and a convex edge is arranged on the upper surface of the rotating disk located at the opening C; the inner side wall of the convex edge is arranged with three installation cavities, and a clamping plate clamped on the outer wall of the cylindrical container is connected to the installation cavity through a micro telescopic motor; the inner side wall of the convex edge is connected to the bottom plate through six connecting blocks, and a weighing sensor is arranged on the upper surface of the bottom plate.

[0009] Furthermore, a lifting mechanism for controlling the cylindrical container to detach from the fixed seat and eject it upward is provided on the inner bottom side surface of the installation space directly below the feeding hole and the opening B; the lifting mechanism includes a lifting cylinder, the end of the lifting cylinder is connected to a base plate, the upper surface of the connecting base plate is provided with a gap formed by two adjacent connecting blocks, and one side of the connecting base plate is connected to a protrusion that rests on the bottom side surface of the cylindrical container; and a guide sleeve rod is connected between the base plate and the inner bottom side surface of the installation space.

[0010] Furthermore, a cover plate is provided at the opening B, and absorbent cotton is provided on the inner side wall of the cover plate.

[0011] Furthermore, a column is installed in the installation space, and the two ends of the column are respectively connected to the bottom side and the top side of the installation space; a rotating sleeve is rotatably provided on the outer wall of the column, and a gear A is provided on the rotating sleeve; a motor is installed on the bottom side of the installation space, and the end of the motor is connected to a gear B meshing with gear A.

[0012] Furthermore, the electrochemical sensor includes a terminal, the end of which is connected to an end plate, a probe rod is fixed to one side of the end plate, an external threaded sleeve is installed on the side of the end plate located around the probe rod, and a rubber ring is installed on the side of the end plate located around the external threaded sleeve; a cable extending outward and connected to the probe rod is provided on the terminal.

[0013] Furthermore, a channel penetrating the column is opened from top to bottom on the top side of the device body, and a threaded ring threadedly connected to the external threaded sleeve is arranged at the top of the channel; a convex ring is arranged on the inner wall of the channel, and a drain pipe is connected to the bottom side of the convex ring, and the end of the drain pipe is removably provided with a sealing plug.

[0014] A method for detecting food microorganisms comprises the following steps:

[0015] Step 1, control the lifting mechanism at the feeding hole to control the corresponding cylindrical container to detach from the fixed seat and push it upward, add the food sample into the cylindrical container, and detect the mass M1 of the food sample through the weighing sensor;

[0016] Step 2, control the rotating disk to rotate, drive the cylindrical container in step 1 to move to the opening A, control the telescopic cylinder A to extend and insert the drain pipe into the cylindrical container, connect the water source to inject a proper amount of water into the cylindrical container, and then detect the total mass M2 through the weighing sensor. At this time, the mass of the injected water can be calculated as M2-M1, that is, the mass concentration of the diluted food sample is M1 / M2;

[0017] Step 3, control the rotating disk to rotate, drive the cylindrical container in step 2 to move to the opening B, control the lifting mechanism at the opening B to control the corresponding cylindrical container to detach from the fixed seat and push it upward, and then control the slider of the rodless cylinder to move downward to drive the ring body to sleeve on the outer peripheral side of the cylindrical container, and start the ultrasonic dispersing head to stir the inside of the cylindrical container;

[0018] Step 4, control the rotating disk to rotate, drive the cylindrical container in step 3 to move to the socket, control the electrochemical sensor to be inserted into the socket, and insert the probe into the cylindrical container for detection.

[0019] The present invention has the following beneficial effects:

[0020] The present invention arranges a rotating disk for carrying a cylindrical container on a device body with an installation space arranged inside, and the top side surface of the device body is provided with a feeding hole, an opening A, an opening B, and a socket for inserting an electrochemical sensor, thereby enabling a food sample to be placed in the cylindrical container during use and to be detected by using the electrochemical sensor in the cylindrical container.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the structure of the detection device of the present invention;

[0024] Figure 2 for Figure 1 Main view;

[0025] Figure 3 for Figure 2 Sectional view at AA;

[0026] Figure 4 for Figure 2 Sectional view at the middle BB;

[0027] Figure 5 for Figure 1 Test chart;

[0028] Figure 6 for Figure 5 Sectional view at EE;

[0029] Figure 7 Schematic diagram of the structure of the electrochemical sensor of the present invention. DETAILED DESCRIPTION

[0030] 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.

[0031] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] See also Figure 1-6 As shown, the present invention is a food microorganism detection device, including a device body 1 with an installation space arranged inside, a column 10 is installed in the installation space, and the two ends of the column 10 are respectively connected to the bottom side and the top side of the installation space; a rotating sleeve 101 is rotatably arranged on the outer wall of the column 10, and a gear A102 is arranged on the rotating sleeve 101; a motor 11 is installed on the bottom side of the installation space, and the end of the motor 11 is connected to a gear B111 meshing with the gear A102, and a rotating disk 12 is installed on the rotating sleeve 101, and four fixing seats for fixing a cylindrical container 100 are arranged on the upper surface of the rotating disk 12, and a feeding hole 1a, an opening A1b, an opening B1c, and a socket 1d are arranged on the top side of the device body 1; and a support ring 15 is arranged on the socket 1d, and when in use, an electrochemical sensor 2 is controlled to pass through the support ring 15 and be inserted into the cylindrical container 100.

[0033] Specifically, a cylinder 16 with an open end facing downward is threadedly connected at the opening A1b, and the inner top side surface of the cylinder 16 is connected to a movable plate 163 through a telescopic cylinder A161. A through hole A is provided on the movable plate 163. The through holes A located on the upper and lower sides of the movable plate 163 are respectively connected to the bellows 162 and the drain pipe 164, and the inner top side surface of the cylinder 16 is provided with a through hole B160 connected to the bellows 162 and the drain pipe 164.

[0034] Specifically, at least one L-shaped bracket 17 is provided on the top side surface of the installation space located at the opening B1 c, and a rodless cylinder 171 is fixed between the L-shaped bracket 17 and the top side surface of the installation space. The slider 172 of the rodless cylinder 171 is connected to a connecting rod 173, and the end of the connecting rod 173 is connected to a ring body 174 sleeved on the outer peripheral side of the cylindrical container 100, and an ultrasonic dispersion head 175 is provided on the inner wall of the ring body 174.

[0035] It can be known that in order to facilitate the use of the fixing base to clamp and support the cylindrical container 100 during use, such as Figure 3-4 and 6. The fixing seat provided by the present invention includes an opening C121 provided on the edge side of the rotating disk 12, and a flange 122 is provided on the upper surface of the rotating disk 12 located at the opening C121; the inner wall of the flange 122 is provided with three installation cavities, and a clamping plate 126 clamped on the outer wall of the cylindrical container 100 is connected to the mounting cavity through a micro-telescopic motor; the inner wall of the flange 122 is connected to a bottom plate 124 through six connecting blocks 123, and a weighing sensor 125 is provided on the upper surface of the bottom plate 124; and then when in use, after the cylindrical container 100 is controlled to be placed on the weighing sensor 125, the micro-telescopic motor is controlled to extend to drive the clamping plate 126 to be clamped on the outer wall of the cylindrical container 100.

[0036] In order to facilitate the stirring of the cylindrical container 100 and the addition of food samples to the cylindrical container 100 through the feeding hole 1a during use, a lifting mechanism for controlling the cylindrical container 100 to detach from the fixed seat and push it upward is provided on the bottom side surface of the installation space directly below the feeding hole 1a and the opening B1c; the lifting mechanism includes a lifting cylinder 13, the end of the lifting cylinder 13 is connected to a base plate 131, the upper surface of the connecting base plate 131 is provided with a gap formed by passing through two adjacent connecting blocks 123, and one side of the connecting base plate 131 is connected to a protrusion 133 that presses against the bottom side surface of the cylindrical container 100; and a guide sleeve rod 134 is connected between the base plate 131 and the bottom side surface of the installation space.

[0037] In order to cooperate with the ultrasonic disperser 175 to stir the inside of the cylindrical container 100 during use, a cover plate 14 is provided at the opening B1c, and absorbent cotton is provided on the inner wall of the cover plate 14. When stirring, the rear end face of the cylindrical container 100 is controlled to be lifted upward and rest against the absorbent cotton, thereby preventing droplets generated by stirring from splashing into the installation space.

[0038] Specifically, Figure 7 The electrochemical sensor 2 provided by the present invention includes a terminal 22, the end of the terminal 22 is connected to the end plate 21, a probe rod 25 is fixed to one side of the end plate 21, an external threaded sleeve 24 is installed on the side of the end plate 21 located around the probe rod 25, and a rubber ring 26 is installed on the side of the end plate 21 located around the external threaded sleeve 24; a cable 23 extending outward and connected to the probe rod 25 is provided on the terminal 22.

[0039] It can also be known that, in order to facilitate the storage of the electrochemical sensor 2 when not in use, a channel 105 is opened from top to bottom on the top side of the device body 1, which penetrates the column 10, and a threaded ring 105 threadedly connected to the external threaded sleeve 24 is provided on the top of the channel 105; a convex ring 103 is provided on the inner wall of the channel 105, and a drain pipe 104 is connected to the bottom side of the convex ring 103, and the end of the drain pipe 104 is removably sealed, and phosphate buffer is stored in the channel 105.

[0040] A method for detecting food microorganisms comprises the following steps:

[0041] Step 1, control the lifting mechanism at the feeding hole 1a to control the corresponding cylindrical container 100 to detach from the fixed seat and push upward, add the food sample to the cylindrical container 100, and detect the mass M1 of the food sample through the weighing sensor 125;

[0042] Step 2, control the rotating disk 12 to rotate, drive the cylindrical container 100 in step 1 to move to the opening A1b, control the telescopic cylinder A161 to extend to insert the drain pipe 164 into the cylindrical container 100, connect the water source to inject a proper amount of water into the cylindrical container 100, and then detect the total mass M2 through the weighing sensor 125. At this time, the mass of the injected water can be calculated as M2-M1, that is, the mass concentration of the diluted food sample is M1 / M2;

[0043] Step 3, control the rotating disk 12 to rotate, drive the cylindrical container 100 in step 2 to move to the opening B1c, control the lifting mechanism at the opening B1c to control the corresponding cylindrical container 100 to detach from the fixed seat and push it upward, and then control the slider 172 of the rodless cylinder 171 to move downward to drive the ring body 174 to sleeve on the outer peripheral side of the cylindrical container 100, and start the ultrasonic dispersing head 175 to stir the inside of the cylindrical container 100;

[0044] Step 4, control the rotating disk 12 to rotate, drive the cylindrical container 100 in step 3 to move to the insertion hole 1d, control the electrochemical sensor 2 to be inserted into the insertion hole 1d, and insert the probe 25 into the cylindrical container 100 for detection.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A food microorganism detection device, characterized in that: It comprises a device body (1) with an installation space arranged inside; A rotating disk (12) is arranged in the installation space, and four fixing seats for fixing the cylindrical container (100) are arranged on the upper surface of the rotating disk (12); The top side surface of the device body (1) is provided with a feeding hole (1a), an opening A (1b), an opening B (1c), and a plug hole (1d) for inserting an electrochemical sensor (2); The opening A (1b) is threadedly connected to a cylinder (16) with an open end facing downwards; the inner top side surface of the cylinder (16) is connected to a movable plate (163) via a telescopic cylinder A (161); a through hole A is provided on the movable plate (163); the through holes A located on the upper and lower sides of the movable plate (163) are respectively connected to a bellows (162) and a drain pipe (164); the inner top side surface of the cylinder (16) is provided with a through hole B (160) communicating with the bellows (162); At least one L-shaped bracket (17) is arranged on the top side surface of the installation space located at the opening B (1c), and a rodless cylinder (171) is fixed between the L-shaped bracket (17) and the top side surface of the installation space, and a slider (172) of the rodless cylinder (171) is connected to a connecting rod (173), and the end of the connecting rod (173) is connected to a ring body (174) sleeved on the outer peripheral side of the cylindrical container (100), and an ultrasonic dispersion head (175) is arranged on the inner wall of the ring body (174).

2. A food microorganism detection device according to claim 1, characterized in that: The insertion hole (1d) is provided with a supporting ring (15) in cooperation with the electrochemical sensor (2), which passes through the supporting ring (15) and is inserted into the cylindrical container (100).

3. A food microorganism detection device according to claim 2, characterized in that: The fixing seat comprises an opening C (121) formed on the edge of the rotating disk (12), and a convex edge (122) is provided on the upper surface of the rotating disk (12) located at the opening C (121); The inner side wall of the convex edge (122) is provided with three installation cavities, and a clamping plate (126) clamped on the outer wall of the cylindrical container (100) is connected to the installation cavity through a micro telescopic motor; The inner side wall of the convex edge (122) is connected to a bottom plate (124) via six connecting blocks (123), and a weighing sensor (125) is arranged on the upper surface of the bottom plate (124).

4. A food microorganism detection device according to claim 3, characterized in that: A lifting mechanism for controlling the cylindrical container (100) to be separated from the fixing seat and ejected upward is provided on the inner bottom side of the installation space directly below the feeding hole (1a) and the opening B (1c); The lifting mechanism comprises a lifting cylinder (13), the end of the lifting cylinder (13) is connected to a base plate (131), the upper surface of the connecting base plate (131) is provided with a gap formed by passing through two adjacent connecting blocks (123), and one side of the connecting base plate (131) is connected to a protruding portion (133) that abuts against the bottom side of the cylindrical container (100); A guide sleeve rod (134) is connected between the base plate (131) and the inner bottom side surface of the installation space.

5. A food microorganism detection device according to claim 4, characterized in that: A cover plate (14) is provided at the opening B (1c), and absorbent cotton is provided on the inner side wall of the cover plate (14).

6. A food microorganism detection device according to claim 5, characterized in that: A column (10) is installed in the installation space, and two ends of the column (10) are respectively connected to the bottom side and the top side of the installation space; A rotating sleeve (101) is rotatably provided on the outer side wall of the column (10), and a gear A (102) is provided on the rotating sleeve (101); A motor (11) is installed on the bottom side of the installation space, and a gear B (111) meshing with the gear A (102) is connected to the end of the motor (11).

7. A food microorganism detection device according to claim 6, characterized in that: The electrochemical sensor (2) comprises a terminal (22), the end of the terminal (22) is connected to an end plate (21), a probe rod (25) is fixed to one side of the end plate (21), an external threaded sleeve (24) is installed on the side of the end plate (21) located around the probe rod (25), and a rubber ring (26) is installed on the side of the end plate (21) located around the external threaded sleeve (24); The end head (22) is provided with a cable (23) extending outwards and connected to a probe rod (25).

8. A food microorganism detection device according to claim 7, characterized in that: A channel (105) penetrating the column (10) is provided on the top side of the device body (1) from top to bottom, and a threaded ring (105) threadedly connected to the external threaded sleeve (24) is provided on the top of the channel (105); A convex ring (103) is provided on the inner wall of the channel (105), and a drain pipe (104) is connected to the bottom side of the convex ring (103), and a sealing plug is detachably provided at the end of the drain pipe (104).

9. A method for detecting food microorganisms, using a food microorganism detection device according to any one of claims 1 to 8, comprising the following steps: Step 1, controlling the lifting mechanism at the feeding hole (1a) to control the corresponding cylindrical container (100) to detach from the fixing seat and push it upward, adding the food sample to the cylindrical container (100), and detecting the mass M1 of the food sample by the weighing sensor (125); Step 2, control the rotating disk (12) to rotate, drive the cylindrical container (100) in step 1 to move to the opening A (1b), control the telescopic cylinder A (161) to extend and insert the drain pipe (164) into the cylindrical container (100), connect the water source to inject a proper amount of water into the cylindrical container (100), and then detect the total mass M2 through the weighing sensor (125). At this time, the mass of the injected water can be calculated as M2-M1, that is, the mass concentration of the diluted food sample is M1 / M2; Step 3, control the rotating disk (12) to rotate, drive the cylindrical container (100) in step 2 to move to the opening B (1c), control the lifting mechanism at the opening B (1c) to control the corresponding cylindrical container (100) to detach from the fixed seat and push it upward, and then control the slider (172) of the rodless cylinder (171) to move downward to drive the ring body (174) to sleeve on the outer peripheral side of the cylindrical container (100), and start the ultrasonic dispersing head (175) to stir the inside of the cylindrical container (100); Step 4, control the rotating disk (12) to rotate, drive the cylindrical container (100) in step 3 to move to the insertion hole (1d), control the electrochemical sensor (2) to be inserted into the insertion hole (1d), and insert the probe (25) into the cylindrical container (100) for detection.

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