Food-borne microorganism detection device based on fluorescence characteristics of semiconductor nanoparticles

Abstract

The utility model discloses a food-borne microbiological detection device based on fluorescence characteristics of semiconductor nanoparticles, which relates to the technical field of microbiological detection and comprises a bottom frame, a reciprocating guide mechanism, a quick connecting mechanism and a connecting auxiliary mechanism. The rapid connection mechanism comprises a mounting sleeve and a mounting rod, the connection auxiliary mechanism comprises a rotating block and an outer fixing ring, the reciprocating guide mechanism ensures the accuracy and integrity of semiconductor nanoparticle fluorescence detection, the reliability of food-borne microorganism detection is improved, the rapid connection mechanism realizes rapid mounting and dismounting of the detection assembly, and the detection efficiency is improved. Different detection assemblies can be conveniently replaced or maintained, the equipment operation efficiency and the use flexibility are remarkably improved, the connection auxiliary mechanism prevents improper locking or accidental loosening, and the operation safety and the connection reliability of the detection device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection technical field more specifically, it relates to a kind of foodborne microorganism detection device based on semiconductor nanoparticle fluorescence characteristics. BACKGROUND

[0002] In the prior art, foodborne microorganism detection device based on semiconductor nanoparticle fluorescence characteristics, although it has high sensitivity and precision, but still faces some significant problems in practical application, especially in the stability of detection guide-in process and the installation and disassembly convenience of detection assembly.

[0003] In the microorganism detection based on semiconductor nanoparticle fluorescence characteristics, the stability of guide-in process is crucial to ensure the accuracy of detection result, usually, this kind of device needs to accurately guide sample to detection area through certain guide mechanism, so as to detect microorganism through the change of fluorescence signal. However, the existing detection device often has unstable phenomenon in guide-in process, for example, sample flow is not uniform, speed is too fast or too slow, liquid drops is not accurate and the like.

[0004] Secondly, the installation and disassembly inconvenience of detection assembly is also a problem to be solved in prior art, semiconductor nanoparticle fluorescence detection device usually contains multiple detection assemblies, these assemblies need to be cleaned, maintained or replaced regularly to ensure long-term stability and efficiency of equipment, however, many current devices do not fully consider the convenient installation and disassembly of assembly in design, resulting in that operating personnel encounter great difficulty in maintenance and replacement. UTILITY MODEL CONTENT

[0005] (I) technical problem solved

[0006] In view of the problems existing in the prior art, the utility model provides a foodborne microorganism detection device based on semiconductor nanoparticle fluorescence characteristics, to solve the technical problems that detection guide-in process is unstable and detection assembly is inconvenient to install and disassemble mentioned in background art.

[0007] (II) technical scheme

[0008] To achieve the above object, the utility model provides following technical scheme: a kind of foodborne microorganism detection device based on semiconductor nanoparticle fluorescence characteristics, including chassis, reciprocating driving mechanism, quick connecting mechanism and connection auxiliary mechanism, the reciprocating driving mechanism includes vertical plate and guide block, and the top end of chassis is provided with vertical plate, and the top end of the end surface of vertical plate is rotatably installed with rotating rod, and the bottom end side of vertical plate is installed with guide block, and the guide block is slidably installed with guide rod, and the rotating rod and rotating rod are rotatably connected with push-pull rod, the quick connecting mechanism includes mounting sleeve and mounting rod, and the side wall of mounting rod is provided with clamping groove, and the outer wall of mounting sleeve is slidably installed with locking rod, and the one end of locking rod is installed with outer moving block, and the outer wall of mounting sleeve is limit rotatably installed with outer rotary frame, and the outer rotary frame is installed with push block and pressing block.

[0009] The utility model further sets up, the connection auxiliary mechanism includes rotary block and outer fixed ring, and multiple rotary blocks are installed on the top end of outer rotary frame, and the outer fixed ring is fixedly installed on the outer wall of mounting sleeve, and the outer fixed ring is provided with positioning slot, and the positioning slot is provided with multiple groups, and the rotary block is installed with positioning spring rod, and the positioning spring rod is gradually inserted into positioning slot, so that the outer rotary frame is stably rotated on the outer wall of mounting sleeve.

[0010] The utility model further sets up, and the bottom end of chassis is installed with bottom plate, and the periphery of the bottom end of bottom plate is installed with supporting leg, and the bottom plate is installed on the bottom end of chassis, and the top end can place to be detected dish, and the periphery of the bottom end is installed with supporting leg, to provide stable detection platform.

[0011] The utility model further sets up, and the top end of bottom plate can place to be detected dish, and one end of mounting rod is installed with detection assembly, and detection assembly to be detected dish is relatively arranged.

[0012] The utility model further sets up, and the side end surface of vertical plate is installed with drive assembly, and the output end of drive assembly is connected with rotating rod, and drive assembly is installed on the side end surface of vertical plate, and the output end is connected with rotating rod, to provide reciprocating motion power source.

[0013] The utility model further sets up, and the outer wall of mounting sleeve is installed with supporting plate, and supporting bearing is installed between supporting plate and outer rotary frame, and supporting plate is installed on the outer wall of mounting sleeve, and supporting bearing is installed between supporting plate and outer rotary frame, to support outer rotary frame rotation.

[0014] The utility model further sets up, and push block pushes locking rod reverse movement by making locking rod enter clamping groove by pressing towards outer moving block of pressing block, and pressing block is installed on outer rotary frame, and locking rod is locked by making locking rod enter clamping groove when rotating and pressing towards outer moving block.

[0015] The utility model further sets up, the outer wall of mounting bush and the inner wall of outer moving block between install be equipped with push spring, push spring installs between mounting bush outer wall and outer moving block inner wall, provides the elastic driving force that lock rod transverse slides.

[0016] (Three) beneficial effect

[0017] Compared with the prior art, the utility model provides a kind of foodborne microorganism detection device based on the fluorescence characteristics of semiconductor nanoparticles, with the following beneficial effects:

[0018] The utility model sets up reciprocating guide mechanism, and longitudinal plate is installed at the top end of chassis, and the drive assembly output end of its side end surface drives rotary lever to rotate, rotary lever converts rotary motion into reciprocating linear sliding motion of guide rod in guide block by push-pull rod, guide rod drives detection assembly installed at one end thereof to detect relative to the dish to be detected, realize the comprehensive scanning coverage of detection assembly to the detection area, ensure the accuracy and integrity of semiconductor nanoparticle fluorescence detection, improve the reliability of foodborne microorganism detection.

[0019] The utility model sets up quick connecting mechanism, and the side wall of mounting rod is provided with clamping slot, which can be inserted into mounting sleeve for connection.When rotating outer rotary frame, compression block is pressed towards outer moving block, push spring provides elastic driving force, lock rod transverse sliding extends into clamping slot to realize locking and fixing, when reversing, push block pushes lock rod to move reversely and exit from clamping slot to release locking, realize the quick installation and disassembly of detection assembly, facilitate to replace different detection assemblies or maintenance, significantly improve equipment operation efficiency and use flexibility.

[0020] The utility model sets up connecting auxiliary mechanism, and a plurality of rotating blocks are installed at the top end of outer rotary frame, and positioning spring rod on rotating block gradually extends into a plurality of positioning grooves provided on outer fixed ring when outer rotary frame rotates, and the cooperation of positioning spring rod and positioning groove provides step positioning feedback and rotation stability effect, so that outer rotary frame stably rotates on the outer wall of mounting sleeve, when positioning spring rod completely extends into positioning groove, it indicates that outer rotary frame has been rotated in place, and lock rod is completely embedded in clamping slot, to ensure accurate positioning and stable reliability of quick connecting mechanism during locking and unlocking operation, prevent locking from being out of place or accidental loosening, improve the operation safety and connection reliability of detection device. ACCURACY

[0021] Figure 1 It is the overall structure schematic view of device in the utility model in unused state;

[0022] Figure 2 It is the structure schematic view of reciprocating guide mechanism in the utility model;

[0023] Figure 3 It is the structure schematic view of detection assembly installation in the utility model;

[0024] Figure 4 It is the structure schematic view of the quick connecting mechanism and the connecting auxiliary mechanism in the utility model;

[0025] Figure 5 It is the structure schematic view inside the quick connecting mechanism and the connecting auxiliary mechanism in the utility model.

[0026] In the drawing: 1, underframe;2, longitudinal plate;3, guide block;4, rotating rod;5, guide rod;6, push-pull rod;7, mounting sleeve;8, mounting rod;9, clamping groove;10, locking rod;11, outward moving block;12, outer rotary frame;13, push block;14, compression block;15, rotating block;16, outer fixed ring;17, positioning groove;18, positioning spring rod;19, bottom plate;20, support leg;21, detection assembly;22, driving assembly;23, support plate;24, support bearing;25, push-in spring. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0029] In the utility model, unless otherwise stated, the orientation such as "up, down" is generally for the direction shown in the drawing, or for the vertical, perpendicular or gravity direction;Similarly, for the convenience of understanding and description, "left, right" is generally for the left and right shown in the drawing;"Inner, outer" refers to the inner and outer of the contour of each component itself, but the above orientation words are not used to limit the utility model.

[0030] Please refer to Figures 1-5 A foodborne microorganism detection device based on the fluorescence characteristics of semiconductor nanoparticles, comprising a chassis 1, a reciprocating guide mechanism, a quick connecting mechanism and a connecting auxiliary mechanism, the reciprocating guide mechanism comprising a longitudinal plate 2 and a guide block 3, the top end of the chassis 1 is provided with the longitudinal plate 2, the top end of one end surface of the longitudinal plate 2 is rotatably installed with a rotating rod 4, the guide block 3 is installed on the bottom end side of the longitudinal plate 2, the guide block 3 is slidably installed with a guide rod 5, the guide rod 5 and the rotating rod 4 are rotatably connected with a push-pull rod 6, the quick connecting mechanism comprises a mounting sleeve 7 and a mounting rod 8, the sidewall of the mounting rod 8 is provided with a clamping groove 9, the outer wall of the mounting sleeve 7 is slidably installed with a locking rod 10, one end of the locking rod 10 is installed with an outward moving block 11, the outer wall of the mounting sleeve 7 is limitingly rotatably installed with an outer rotary frame 12, the outer rotary frame 12 is installed with a push block 13 and a compression block 14.

[0031] In the embodiment, the driving assembly 22 drives the rotating rod 4 to rotate, the rotating rod 4 drives the guide rod 5 to reciprocate in the guide block 3 through the push-pull rod 6, the guide block 3 is installed on the bottom end side of the vertical plate 2, the reciprocating movement of the guide rod 5 drives the detection assembly 21 installed thereon to reciprocate relative to the to-be-detected dish on the bottom plate 19, and the reciprocating driving realizes the scanning detection of the detection assembly 21 on the to-be-detected dish, so that the fluorescence detection covers the to-be-detected area. The clamping groove 9 is arranged in the side wall of the mounting rod 8 and can be inserted into the mounting sleeve 7 for connection. When the outer rotating frame 12 rotates, the pressing block 14 on the outer rotating frame 12 is pressed towards the outer moving block 11, the push spring 25 is compressed, the locking rod 10 is driven to slide transversely and extend into the clamping groove 9 of the mounting rod 8, and the mounting rod 8 is locked and fixed with the mounting sleeve 7. When disassembly is needed, the outer rotating frame 12 is reversely rotated to make the push block 13 push the locking rod 10 to move reversely, the locking rod 10 is withdrawn from the clamping groove 9 to release the locking, and the quick mounting and dismounting of the detection assembly 21 are realized.

[0032] The connecting auxiliary mechanism comprises the rotating blocks 15 and the outer fixed ring 16. The rotating blocks 15 are installed on the top end of the outer rotating frame 12, the outer fixed ring 16 is fixedly installed on the outer wall of the mounting sleeve 7, the outer fixed ring 16 is provided with the positioning grooves 17, the rotating blocks 15 are provided with the positioning spring rods 18, the positioning spring rods 18 extend into the positioning grooves 17 step by step, and the outer rotating frame 12 is stably rotated on the outer wall of the mounting sleeve 7.

[0033] In the embodiment, the rotating blocks 15 are installed on the top end of the outer rotating frame 12, the positioning spring rods 18 on the rotating blocks 15 extend into the positioning grooves 17 on the outer fixed ring 16 step by step when the outer rotating frame 12 rotates, the cooperation between the positioning spring rods 18 and the positioning grooves 17 provides the step-by-step positioning effect and the rotation feedback, the outer rotating frame 12 is stably rotated on the outer wall of the mounting sleeve 7, and when the positioning spring rods 18 completely extend into the positioning grooves 17, it indicates that the outer rotating frame 12 has been rotated in place, and the locking rod 10 is completely embedded in the clamping groove 9 to realize reliable locking.

[0034] Please refer to Figures 1-5, as a kind of based on semiconductor nanoparticles fluorescence characteristics of foodborne microorganism detection device supplementary implementation mode for reciprocating guide mechanism, quick connection mechanism and connection auxiliary mechanism: the bottom end of base 1 is provided with bottom plate 19, and the bottom end of bottom plate 19 is provided with support leg 20, the top end of bottom plate 19 can place the detection dish, one end of mounting rod 8 is provided with detection assembly 21, and detection assembly 21 is arranged opposite the detection dish, drive assembly 22 is installed on the side end surface of vertical plate 2, and the output end of drive assembly 22 is connected with rotating rod 4, support plate 23 is installed on the outer wall of mounting sleeve 7, support bearing 24 is installed between support plate 23 and outer rotating frame 12, compression block 14 can be pressed to outward moving block 11 to make locking rod 10 extend into clamping groove 9, reverse rotation of outer rotating frame 12 makes push block 13 push locking rod 10 to move reversely, push-in spring 25 is installed between the outer wall of mounting sleeve 7 and the inner wall of outward moving block 11.

[0035] More specifically, the detection dish is placed on the top end of the bottom plate 19, the drive assembly 22 is started, the output end drives the rotating rod 4 to rotate, the guide rod 5 is driven to slide reciprocally in the guide block 3 through the push-pull rod 6, the detection assembly 21 mounted on one end of the guide rod 5 is driven to move reciprocally relative to the detection dish, and the detection assembly 21 detects the foodborne microorganism sample in the detection dish by utilizing the fluorescence characteristics of semiconductor nanoparticles. When it is necessary to install the detection assembly 21, the mounting rod 8 is inserted into the mounting sleeve 7, the compression block 14 is pressed towards the outward moving block 11 by rotating the outer rotating frame 12, the locking rod 10 extends into the clamping groove 9 to be locked, the positioning spring rod 18 on the rotating block 15 gradually extends into the positioning groove 17 of the outer fixed ring 16 to provide rotation stability and in-place feedback, the support bearing 24 is installed between the support plate 23 and the outer rotating frame 12 to support the outer rotating frame 12 to rotate stably, the reciprocating scanning detection of the detection assembly 21 on the detection area, the quick installation and disassembly of the detection assembly 21 and the stable and reliable connection operation are realized, and the detection efficiency of foodborne microorganisms and the operation convenience are significantly improved.

[0036] In summary, when the reciprocating guide mechanism needs to be operated, the output end of the drive assembly 22 drives the rotating rod 4 to rotate, the rotating rod 4 drives the guide rod 5 to slide reciprocally in the guide block 3 through the push-pull rod 6, the guide block 3 is installed on the bottom end side of the vertical plate 2, the reciprocating movement of the guide rod 5 drives the detection assembly 21 mounted thereon to move reciprocally relative to the detection dish on the bottom plate 19, and the reciprocating guide realizes the scanning detection of the detection assembly 21 on the detection dish, ensuring that the fluorescence detection covers the detection area.

[0037] When the quick connecting mechanism needs to operate, the clamping groove 9 is opened on the side wall of the mounting rod 8, and the mounting sleeve 7 is inserted for connection. When the outer rotating frame 12 is rotated, the pressing block 14 on the outer rotating frame 12 is pressed towards the outward moving block 11, the push spring 25 is compressed, the locking rod 10 is driven to slide horizontally and extend into the clamping groove 9 of the mounting rod 8, and the mounting rod 8 is locked and fixed with the mounting sleeve 7. When disassembly is needed, the outer rotating frame 12 is reversely rotated to make the push block 13 push the locking rod 10 to move reversely, the locking rod 10 is withdrawn from the clamping groove 9 to release the locking, and the quick mounting and dismounting of the detection assembly 21 are realized.

[0038] When the auxiliary connecting mechanism needs to operate, a plurality of rotating blocks 15 are installed at the top end of the outer rotating frame 12. The positioning spring rod 18 on the rotating block 15 gradually extends into the plurality of positioning grooves 17 opened on the outer fixed ring 16 when the outer rotating frame 12 is rotated, and the cooperation between the positioning spring rod 18 and the positioning groove 17 provides a step-by-step positioning effect and a rotating feedback, so that the outer rotating frame 12 is stably rotated on the outer wall of the mounting sleeve 7. When the positioning spring rod 18 is completely inserted into the positioning groove 17, it indicates that the outer rotating frame 12 has been rotated in place, and the locking rod 10 is completely embedded in the clamping groove 9 to realize reliable locking.

[0039] The detection dish is placed at the top end of the bottom plate 19, and the driving assembly 22 is started. The output end drives the rotating rod 4 to rotate, the push-pull rod 6 drives the guide rod 5 to reciprocate in the guide block 3, the guide rod 5 drives the detection assembly 21 installed at one end thereof to reciprocate relative to the detection dish to perform a reciprocating scanning movement, and the detection assembly 21 detects the foodborne microorganism sample in the detection dish by utilizing the fluorescent characteristics of the semiconductor nanoparticles. When the detection assembly 21 needs to be installed, the mounting rod 8 is inserted into the mounting sleeve 7, the outer rotating frame 12 is rotated to make the pressing block 14 press towards the outward moving block 11, the locking rod 10 is inserted into the clamping groove 9 to be locked, the positioning spring rod 18 on the rotating block 15 is gradually inserted into the positioning groove 17 of the outer fixed ring 16 to provide rotating stability and in-place feedback, the support bearing 24 is installed between the support plate 23 and the outer rotating frame 12 to stably rotate the outer rotating frame 12, the reciprocating scanning detection of the detection assembly 21 on the detection area, the quick mounting and dismounting of the detection assembly 21, and the stable and reliable connection operation are realized, and the detection efficiency and operation convenience of the foodborne microorganism are significantly improved.

[0040] In all the schemes mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection mode, which will not be described one by one. In the above, when the fixed connection is mentioned, welding is preferred, although the embodiments of the utility model have been shown and described, those skilled in the art can understand that the embodiments can be changed, modified, replaced and modified in various ways without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0041] In all the above-mentioned schemes, the electrical element operation is controlled by the controller, and the control principle and circuit connection of the controller are known and mature technologies, and the specific circuit structure is not described here. In all the above-mentioned schemes, the motor can be matched with a speed reducer if necessary, and the connection structure and working principle between the motor and the speed reducer are known technologies, and the utility model does not make superfluous repetition.

Claims

1. A device for detecting foodborne microorganisms based on the fluorescence characteristics of semiconductor nanoparticles, comprising a chassis (1), a reciprocating guide mechanism, a quick connection mechanism and a connection auxiliary mechanism, characterized in that: The reciprocating guide mechanism comprises a longitudinal plate (2) and a guide block (3), the top end of the chassis (1) is provided with the longitudinal plate (2), the top end of one end surface of the longitudinal plate (2) is rotatably provided with a rotating rod (4), the guide block (3) is installed on the bottom end side of the longitudinal plate (2), the guide block (3) is slidably provided with a guide rod (5), the guide rod (5) and the rotating rod (4) are rotatably connected with a push-pull rod (6), the quick connecting mechanism comprises a mounting sleeve (7) and a mounting rod (8), the side wall of the mounting rod (8) is provided with a clamping groove (9), the outer wall of the mounting sleeve (7) is slidably provided with a locking rod (10), one end of the locking rod (10) is provided with an outward moving block (11), the outer wall of the mounting sleeve (7) is limitingly rotatably provided with an outer rotating frame (12), the outer rotating frame (12) is provided with a pushing block (13) and a pressing block (14).

2. The device for detecting foodborne microorganism based on fluorescent properties of semiconductor nanoparticles according to claim 1, characterized in that: The connecting auxiliary mechanism comprises a rotating block (15) and an outer fixed ring (16), a plurality of rotating blocks (15) are installed on the top end of the outer rotating frame (12), the outer fixed ring (16) is fixedly installed on the outer wall of the mounting sleeve (7), the outer fixed ring (16) is provided with a plurality of positioning grooves (17), and the rotating block (15) is provided with a positioning spring rod (18), the positioning spring rod (18) is gradually inserted into the positioning groove (17), so that the outer rotating frame (12) is stably rotated on the outer wall of the mounting sleeve (7).

3. The device for detecting foodborne microorganism based on fluorescent properties of semiconductor nanoparticles according to claim 1, characterized in that: The bottom end of the chassis (1) is provided with a bottom plate (19), and the periphery of the bottom end of the bottom plate (19) is provided with a supporting leg (20).

4. The device for detecting foodborne microorganism based on fluorescent properties of semiconductor nanoparticles according to claim 3, characterized in that: The top end of the bottom plate (19) can place a to-be-detected dish, one end of the mounting rod (8) is provided with a detection assembly (21), and the detection assembly (21) is arranged opposite to the to-be-detected dish.

5. The device for detecting foodborne microorganism based on fluorescent properties of semiconductor nanoparticles according to claim 1, characterized in that: The side end surface of the longitudinal plate (2) is provided with a driving assembly (22), and the output end of the driving assembly (22) is connected with the rotating rod (4).

6. The device for detecting foodborne microorganism based on fluorescent properties of semiconductor nanoparticles according to claim 1, characterized in that: The outer wall of the mounting sleeve (7) is provided with a supporting plate (23), and the supporting plate (23) and the outer rotating frame (12) are provided with a supporting bearing (24) therebetween.

7. The device for detecting foodborne microorganism based on fluorescent properties of semiconductor nanoparticles according to claim 1, characterized in that: The pressing block (14) can press the outward moving block (11) to make the locking rod (10) extend into the clamping groove (9), and the outer rotating frame (12) is reversely rotated to make the pushing block (13) push the locking rod (10) to move reversely.

8. The device for detecting foodborne microorganism based on fluorescent properties of semiconductor nanoparticles according to claim 1, characterized in that: The mounting sleeve (7) and the inner wall of the outward moving block (11) are provided with a pushing spring (25).

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