Sample adjusting device for microbiological detection analyzer

Abstract

The invention discloses a sample adjusting device for a microbiological detection analyzer, and relates to the technical field of microbiological detection analysis, the sample adjusting device comprises a device main body, an inner cavity of the device main body is fixedly connected with a fixing plate, the fixing plate is fixedly connected with a servo motor, an output shaft of the servo motor is fixedly connected with a rotating disc, and the rotating disc is fixedly connected with a rotating shaft of the rotating disc. A crank is rotationally connected to the rotating disc, a loading table is rotationally connected to the end, away from the rotating disc, of the crank, a guide rail is fixedly connected to an inner cavity of the device body, and a first sample tube and a second sample tube are arranged on the loading table; in the process that the test tube moves to the position below the first sample tube and the second sample tube, a piston rod of a piston barrel moves, detection liquid in a liquid storage barrel is dropped into the test tube, meanwhile, the dropping quantity of the detection liquid can be adjusted and controlled, errors caused by different persons in manual operation are avoided, and the detection accuracy is improved. In addition, direct contact between operators and reagents and samples is reduced in the automatic process, and the risks of cross contamination and environmental pollution are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial detection and analysis, and in particular to a sample adjustment device for a microbial detection and analysis instrument. Background Art

[0002] Microbial detection analyzers are specialized equipment used to detect and analyze microorganisms in samples. This instrument is widely used in laboratory environments, especially in food safety, clinical diagnosis, environmental monitoring and pharmaceutical industries. Microbial detection analyzers use a variety of technologies to identify and count microorganisms.

[0003] When using existing analyzers, samples are often prepared and shaken in a specific area before being poured into test tubes. During this operation, the test solution distributed in multiple test tubes is uneven, and manual operation by personnel may lead to errors in the operating specifications in some steps. Manual operation by personnel may cause contamination of test tubes with foreign microorganisms and bacteria, resulting in inaccurate analysis. At the same time, the test solution cannot be automatically prepared, which increases the frequency of errors in complex operation steps.

[0004] When using an existing analyzer, distilled water, a mixed liquid, and a test liquid are added to a test tube twice. The two operations will produce a time difference, which will reduce the accuracy of the test results and make it impossible to ensure a strict comparison between the control group and the experimental group. In addition, in the process of adding distilled water and the mixed liquid, the staff may mistakenly spill the distilled water and the mixed liquid on the surface of the operating table, which will not only require additional cleaning work, but also make it impossible to ensure that the quantitative relationship between the added distilled water and the mixed liquid is consistent with the demand, thereby causing the test to be invalid and requiring re-testing.

[0005] In order to solve the above problems, the inventors proposed a sample adjustment device for a microbiological detection analyzer. Summary of the invention

[0006] In order to solve the above technical problems, a sample adjustment device for a microbial detection analyzer is provided. This technical solution solves the problem of multiple contacts between samples and reagents proposed in the above background technology.

[0007] To achieve the above objectives, the present invention can be implemented by the following technical solutions:

[0008] The present invention provides a sample adjustment device for a microorganism detection analyzer, comprising a device body, an inner cavity of the device body is fixedly connected to a fixed plate, a servo motor is fixedly connected to the fixed plate, an output shaft of the servo motor is fixedly connected to a rotating disk, a side of the rotating disk away from the servo motor is rotatably connected to a crank, an end of the crank away from the rotating disk is rotatably connected to a loading platform, the inner cavity of the device body is fixedly connected to a guide rail, a sample tube 1 and a sample tube 2 are arranged on the loading platform, and the loading platform is slidably connected to the guide rail;

[0009] A diversion assembly is arranged below the loading platform, and the diversion assembly includes a retaining groove opened on the surface of the loading platform, solenoid valves are opened at the bottom of the sample tube 1 and the sample tube 2, and the number of the solenoid valves is not less than four, and air holes are opened at the tops of the sample tube 1 and the sample tube 2, and fixing bars are fixedly connected to the bottoms of the sample tube 1 and the sample tube 2, and at least two fixing bars are arranged, and a rotating shaft is rotatably connected to the side of the fixing bar away from the sample tube 1 and the sample tube 2, and bonding plates are equidistantly fixedly connected to the rotating shaft, and at least four bonding plates are arranged, and a trigger rod is fixedly connected to the side of the bonding plate away from the solenoid valve, and at least two groups of tension springs are fixedly connected to the side of the bonding plate away from the trigger rod, and each group includes two tension springs.

[0010] Preferably, the inner cavity of the fixed plate is provided with a force storage component, and the force storage component includes a synchronous wheel 1 which is sleeved and fixedly connected to the outer surface of the servo motor output shaft, the synchronous wheel 1 is connected to the synchronous wheel 2 through a synchronous belt transmission, the synchronous wheel 2 is fixedly connected to a bevel gear 1 on the side away from the fixed plate, the bevel gear 1 is meshedly connected to the outer side of the bevel gear 2, the bevel gear 2 is fixedly connected to a connecting rod on the side away from the bevel gear 1, the connecting rod is fixedly connected to a synchronous wheel 3, and the synchronous wheel 3 is connected to a synchronous wheel 4 through a synchronous belt transmission, the inner cavity of the device body is fixedly connected to a limiting disk, a clockwork spring and a rotating shaft are rotatably connected in the limiting disk, a linkage shaft is slidably connected in the rotating shaft, and a concentric shaft is slidably connected to the side of the linkage shaft away from the rotating shaft.

[0011] Preferably, the synchronous wheel 2 is rotatably connected to the fixed plate, the connecting rod is rotatably connected to the fixed plate through a support block, the connecting rod is rotatably connected to the device body, and the synchronous wheel 4 is rotatably connected to the device body.

[0012] Preferably, a limiting groove is provided on the outer surface of the rotating shaft located in the inner cavity of the limiting disk, the limiting groove on the surface of the rotating shaft is plugged into the clockwork spring, and the concentric shaft is fixedly connected to the synchronous wheel four.

[0013] Preferably, the inner cavity of the fixed plate is provided with a trigger assembly, and the trigger assembly includes an electric telescopic rod fixedly connected to the inner cavity of the device body, the telescopic end of the electric telescopic rod is fixedly connected to a follower ring, the end of the rotating shaft away from the synchronous wheel four is fixedly connected to a ratchet, the outer side of the ratchet is slidably connected to a pawl, and no less than two pawls are provided, and the side of the pawl away from the rotating shaft is rotatably connected to a disc, and the side of the disc close to the ratchet is fixedly connected to a small compression spring with the same number of pawls, and the side of the disc away from the ratchet is fixedly connected to a reciprocating screw, and the end of the reciprocating screw away from the disc is rotatably connected to a bracket, and the side of the bracket close to the disc is fixedly connected to a spring and a guide rod. , the springs are arranged at least four, the guide rod is slidably connected with a threaded block, a test tube is clamped on the threaded block, the test tube is arranged at least four, the threaded block is fixedly connected with a pushing rod with the same number of test tubes on one side close to the test tube, the bracket is slidably connected with an extrusion plate, the bracket is fixedly connected with a piston cylinder with the same number of test tubes, the piston cylinder is connected with a dropper inside, the threaded block is fixedly connected with a push rod on the side away from the synchronous wheel four, the bracket is fixedly connected with a limiting liquid tube on the side close to the guide rod, the outer surface of the liquid limiting tube is provided with a limiting position opening, a plurality of limiting positions are arranged, a spring buckle is fixedly connected in the limiting position, and the outer surface of the liquid limiting tube is slidably connected with a limiting ring.

[0014] Preferably, the follower ring is slidably connected to the linkage shaft, the small compression spring is fixedly connected to the pawl, the bracket is fixedly connected to the inner cavity of the device body, the guide rod is fixedly connected to the device body, and the reciprocating screw is threadedly connected to the threaded block.

[0015] Preferably, the push rod and the dropper are arranged alternately, the piston rods of the four piston cylinders are fixedly connected to the extrusion plate, the dropper is fixedly connected to the device body through a support plate, the end of the dropper away from the piston cylinder is directed obliquely downward, the middle part of the limit ring is fixedly connected to a blocking strip, and the bottom end of the limit ring is rotatably connected to a fixing bolt.

[0016] Preferably, the retaining groove is compatible with sample tube one and sample tube two.

[0017] Preferably, a sealing gasket is provided on the solenoid valve, the solenoid valve is located obliquely above the test tube, the trigger rod and the push rod are located on the same horizontal line, a contact switch is provided on the trigger rod, and the contact switch is electrically controlled and connected to the solenoid valve, one group of the tension springs is fixedly connected to sample tube one, and the other group of the tension springs is fixedly connected to sample tube two.

[0019] From the above, the advantages of the present invention are:

[0020] In the process of moving the test tube to the bottom of sample tube one and sample tube two, the piston rod of the piston cylinder moves to drip the test liquid in the liquid storage cylinder into the test tube. Compared with the method of manually picking up the test tube and manually dripping the test liquid in the prior art, the present device can control the amount of test liquid dripped in and then drip the test liquid. By controlling the amount of test liquid dripped in, the needs of detecting different microorganisms can be met, and the same amount of test liquid can be ensured to be dripped into each test tube, avoiding errors caused by different personnel in manual operation. In addition, the automated process reduces the direct contact between the operator and the reagents and samples, avoiding the risks of cross contamination and environmental pollution.

[0021] A loading platform and a threaded block are provided inside the device body, and during the rotation of the servo motor output shaft, the rotating shaft is driven to rotate, thereby accumulating force in the clockwork spring. Compared with the method in the prior art of shaking sample tube one and sample tube two in a specific area and then moving sample tube one and sample tube two to the detection area, the device integrates the loading platform and the threaded block inside the device body, reducing the physical handling and repeated connection of samples. The staff only needs to perform the initial sample loading to realize the fully automatic process from shaking to preparing for detection, reducing human intervention, and using the clockwork spring to store and release mechanical energy, reducing the need for multiple electric drives and improving the mechanical stability and service life of the equipment.

[0022] The liquid in sample tube one and sample tube two is introduced into the test tube by pushing the extrusion plate through the threaded block. Compared with the prior art method of adding distilled water, mixed liquid and detection liquid into the test tube twice, the device adds distilled water and mixed liquid into the corresponding test tubes respectively while dripping the detection liquid. This synchronization can eliminate the influence of time difference and ensure strict comparison between the control group and the experimental group. In addition, multiple steps can be completed at the same time through one operation, which significantly reduces the number of steps required to be performed during the experiment, thereby shortening the overall experimental time, and reducing the chance of operators directly contacting samples and reagents, reducing the risk of contamination.

[0023] By pushing the rod to contact and disengage from the trigger rod, the solenoid valve can be opened and closed in time, avoiding the situation in the prior art where the liquid in sample tube one and sample tube two drips onto the operating table during the process of introducing the test tube due to staff errors, thereby contaminating the operating table and requiring additional cleaning work. In addition, when liquid drips onto the operating table, it cannot be guaranteed that the quantitative relationship between sample tube one and sample tube two introduced into the test tube is consistent with the requirement, thereby causing the test to be invalid and requiring re-testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front perspective schematic diagram of the overall structure shown in the present invention;

[0025] Figure 2 It is a cutaway perspective schematic diagram of the interior of the device body shown in the present invention;

[0026] Figure 3 It is a three-dimensional schematic diagram of the loading platform and guide rail related components shown in the present invention;

[0027] Figure 4 It is a three-dimensional schematic diagram of the interior of the fixing plate shown in the present invention;

[0028] Figure 5 It is a three-dimensional schematic diagram of the mainspring spring and the rotating shaft related parts shown in the present invention;

[0029] Figure 6 It is a three-dimensional schematic diagram of the disc and reciprocating screw rod related parts shown in the present invention;

[0030] Figure 7 It is a three-dimensional schematic diagram of the rotating shaft and the linkage shaft related parts shown in the present invention;

[0031] Figure 8 It is a three-dimensional schematic diagram of the ratchet and pawl related parts shown in the present invention;

[0032] Fig. 9 It is a three-dimensional schematic diagram of the trigger component shown in the present invention;

[0033] Fig.10 The present invention shows Fig. 9 A is a partially enlarged three-dimensional schematic diagram;

[0034] Fig.11 It is a partial plan view of the trigger assembly shown in the present invention;

[0035] Fig.12 It is an exploded stereoscopic schematic diagram of a sample tube 1 and a loading platform shown in the present invention;

[0036] Fig.13 It is a bottom-up stereoscopic schematic diagram of the flow diversion assembly shown in the present invention;

[0037] Fig.14 It is an exploded stereoscopic schematic diagram of the diversion assembly shown in the present invention;

[0038] Fig.15 It is a three-dimensional schematic diagram of the push rod and liquid limiting tube related components shown in the present invention;

[0039] Fig.16 It is an exploded stereoscopic schematic diagram of the liquid limiting tube and the limiting ring shown in the present invention.

[0040] Among them, the accompanying drawings in the present invention are:

[0041] 1. Device body; 2. Fixing plate; 21. Servo motor; 31. Rotating disk; 32. Crank; 33. Loading table; 34. Guide rail; 41. Sample tube 1; 42. Sample tube 2;

[0042] Power storage assembly: 51, synchronous wheel 1; 52, synchronous wheel 2; 53, bevel gear 1; 54, bevel gear 2; 55, connecting rod; 56, synchronous wheel 3; 57, synchronous wheel 4; 58, limiting plate; 59, spring; 510, rotating shaft; 511, linkage shaft; 512, concentric shaft;

[0043] Trigger assembly: 61, electric telescopic rod; 62, follower ring; 63, ratchet; 64, pawl; 65, disc; 6501, small compression spring; 66, reciprocating screw; 67, bracket; 68, spring; 69, guide rod; 610, threaded block; 611, test tube; 612, push rod; 613, extrusion plate; 614, piston cylinder; 615, dropper; 616, push rod; 617, liquid limiting tube; 618, spring buckle; 619, limit ring;

[0044] Diverter assembly: 71, retaining groove; 72, solenoid valve; 73, fixing strip; 74, rotating shaft; 75, fitting plate; 76, trigger rod; 77, tension spring. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] See also Figures 1 to 16 As shown, it is an embodiment provided by the present invention, and a sample adjustment device for a microbial detection analyzer is provided and will be described in detail below:

[0047] Embodiment 1:

[0048] A sample conditioning device for a microbiological detection and analysis instrument, such as Figures 1 to 3As shown, it includes a device body 1, an outer wall of the device body 1 is provided with an operation button, an inner cavity side wall of the device body 1 is fixedly connected with a fixing plate 2, a servo motor 21 is fixedly connected to the fixing plate 2, and the servo motor 21 is embedded in the fixing plate 2, and a staff member can operate the button to control the opening and closing of the servo motor 21 through a controller, an output shaft of the servo motor 21 is fixedly connected with a rotating disk 31, an eccentric position of the rotating disk 31 away from the servo motor 21 is rotatably connected with a crank 32, an end of the crank 32 away from the rotating disk 31 is rotatably connected with a loading platform 33, a guide rail 34 is fixedly connected with the inner cavity side wall of the device body 1, a sample tube 1 41 and a sample tube 2 42 are provided on the upper surface of the loading platform 33, the amount of liquid in the sample tube 1 41 is one third of the amount of liquid in the sample tube 2 42, the loading platform 33 is slidably connected with the guide rail 34, a force storage component and a trigger component are provided in the inner cavity of the fixing plate 2, and a flow diversion component is provided below the loading platform 33;

[0049] like Figures 4 to 7 As shown, the power storage component includes a synchronous wheel 1 51 which is sleeved and fixedly connected to the outer surface of the output shaft of the servo motor 21, and the synchronous wheel 1 51 is located between the servo motor 21 and the rotating disk 31, the synchronous wheel 1 51 is connected to the synchronous wheel 2 52 through a synchronous belt transmission, the synchronous wheel 2 52 is rotatably connected to the upper surface of the fixed plate 2, the synchronous wheel 2 52 is fixedly connected to the side away from the fixed plate 2 with a bevel gear 1 53, the bevel gear 1 53 is meshed with a bevel gear 2 54, the bevel gear 2 54 is fixedly connected to the side away from the bevel gear 1 53 with a connecting rod 55, the outer surface of the connecting rod 55 is fixedly connected to a synchronous wheel 3 56, and the synchronous wheel 3 56 is rotatably connected to the inner wall of the device body 1, the synchronous wheel 3 56 is connected to the synchronous wheel 4 57 through a synchronous belt transmission, and the synchronous wheel 4 57 is connected to the device body 1. The device body 1 is rotatably connected to the inner cavity side wall, and a limiting disk 58 is fixedly connected to the bottom surface of the inner cavity of the device body 1, and its outer arc surface is connected to the device body 1. The inner ring surface of the limiting disk 58 is rotatably connected to a clockwork spring 59, and the center of the inner cavity side wall of the limiting disk 58 is rotatably connected to a rotating shaft 510. A linkage shaft 511 is slidably connected inside the rotating shaft 510. The linkage shaft 511 can limit the rotation of the rotating shaft 510, and the linkage shaft 511 is composed of a cylinder and a long bar located on the outer ring surface, which is adapted to the rotating shaft 510, so as to limit the rotation of the linkage shaft 511. A concentric shaft 512 is slidably connected to the side of the linkage shaft 511 away from the rotating shaft 510, and a part of the linkage shaft 511 is located inside the concentric shaft 512, and the concentric shaft 512 is adapted to the rotating shaft 510.

[0050] Further, such as Figure 4 As shown, the connecting rod 55 is rotatably connected to the upper surface of the fixing plate 2 through the supporting block, and the connecting rod 55 is rotatably connected to the side wall of the inner cavity of the device body 1.

[0051] Further, such as Figure 5As shown, the outer surface of the inner cavity of the limiting disk 58 where the rotating shaft 510 is located is provided with a limiting groove, and the limiting groove is plugged into the end of the clockwork spring 59 away from the inner annular surface of the limiting disk 58, the rotating shaft 510 passes through the limiting disk 58, and the concentric shaft 512 is fixedly connected to the synchronous wheel four 57.

[0052] Further, such as Figures 6 to 11 , Fig.15 and Fig.16 As shown, the trigger assembly includes an electric telescopic rod 61 fixedly connected to the inner cavity of the device body 1. The staff can operate the button to control the electric telescopic rod 61 to start through the controller. The telescopic end of the electric telescopic rod 61 is fixedly connected to a follower ring 62. The end of the rotating shaft 510 away from the synchronous wheel 457 is fixedly connected to a ratchet 63. The outer wall of the ratchet 63 is abutted and connected with a pawl 64. There are no less than two pawls 64. The side of the pawl 64 away from the rotating shaft 510 is rotatably connected with a disc 65. The pawl 64 can limit the rotation direction of the disc 65. The side of the disc 65 close to the ratchet 63 is fixedly connected with a small compression spring 6501 with the same number as the pawl 64. The side of the disc 65 away from the ratchet 63 is fixedly connected with a reciprocating screw 66. The end of the reciprocating screw 66 away from the disc 65 is rotatably connected with a bracket 67. The side of the bracket 67 close to the disc 65 is fixedly connected with a spring 68 and a guide rod 69. The spring 68 is set to no less than Four, the outer surface of the guide rod 69 is slidably connected with a threaded block 610, and a test tube 611 is clamped on the threaded block 610. No less than four test tubes 611 are provided, and the four test tubes 611 are divided into a control group and three experimental groups. A push rod 612 with the same number of test tubes 611 is fixedly connected to the side of the threaded block 610 close to the test tube 611, and an extrusion plate 613 is slidably connected to the groove one at the bottom of the bracket 67, and a piston cylinder 614 with the same number of test tubes 611 is fixedly connected to the top surface of the bracket 67, and a dropper 615 is connected to the inside of the piston cylinder 614, and a push rod 616 is fixedly connected to the side of the threaded block 610 away from the synchronous wheel four 57, and a limited liquid tube 617 is fixedly connected to the side of the bracket 67 close to the guide rod 69. A limiting opening is provided on the outer surface of the limiting liquid tube 617, and a plurality of limiting openings are provided. A spring buckle 618 is fixedly connected in the limiting opening, and a limiting ring 619 is slidably connected to the outer surface of the limiting liquid tube 617.

[0053] Further, such as Figure 8 and Fig. 9 As shown, the inner ring surface of the follower ring 62 is slidably connected to the outer surface of the linkage shaft 511, the small compression spring 6501 is fixedly connected to the outer wall of the pawl 64, the bracket 67 is fixedly connected to the bottom surface of the inner cavity of the device body 1, the end of the guide rod 69 away from the bracket 67 is fixedly connected to the side wall of the inner cavity of the device body 1, and the outer surface of the reciprocating screw 66 is threadedly connected to the threaded block 610.

[0054] Further, such as Fig. 9 , Fig.11, Fig.15 and Fig.16 As shown, the push rod 612 and the dropper 615 are arranged alternately, the piston cylinder 614 is composed of a straight cylinder and a piston, the piston rods of the four piston cylinders 614 are fixedly connected to the extrusion plate 613, the dropper 615 is fixedly connected to the device body 1 through the support plate, and the end of the dropper 615 away from the piston cylinder 614 is directed obliquely downward, and a blocking strip is fixedly connected to the middle part of the limiting ring 619, which is used to limit the push rod 616, and the bottom end of the limiting ring 619 is rotatably connected to a fixing bolt, which is used to fix the limiting ring 619.

[0055] During operation: Initial limitation: The output shaft of the servo motor 21 is preset with a number of rotations through the controller, and the number of rotations is an integer multiple, and the telescopic end of the electric telescopic rod 61 is preset with a telescopic length through the controller;

[0056] The staff member picks up the sample tube 1 41 and the sample tube 2 42 respectively, fills the sample tube 1 41 with distilled water, and fills the sample tube 2 42 with the sample and the absorption liquid, and the volume of the distilled water is one third of the volume of the absorption liquid, and then puts them back to their original positions, and then presses the operation button on the outer wall of the device body 1 to rotate the output shaft of the servo motor 21 through the controller, and the output shaft of the servo motor 21 rotates a preset number of circles. During the rotation of the output shaft of the servo motor 21, the rotating disk 31 is driven to rotate, so that the crank 32 on the surface of the rotating disk 31 rotates in a circular trajectory, so that the crank 32 reciprocates to push and pull the loading platform 33, and the loading platform 33 reciprocates horizontally along the guide rail 34, so that the sample tube 1 41 and the sample tube 2 42 are shaken;

[0057] The device utilizes the rotation of the output shaft of the servo motor 21 to make the spring spring 59 store force and move the thread block 610 to the bottom of the loading platform 33. The detailed steps are as follows:

[0058] During the rotation of the output shaft of the servo motor 21, the synchronous wheel 1 51 rotates together with the output shaft of the servo motor 21. Since the synchronous wheel 1 51 drives the synchronous wheel 2 52 through the synchronous belt, the synchronous wheel 2 52 and the bevel gear 1 53 rotate together with the synchronous wheel 1 51. Since the bevel gear 1 53 meshes with the bevel gear 2 54, the bevel gear 2 54, the connecting rod 55 and the synchronous wheel 3 56 rotate together with the synchronous wheel 2 52. Since the synchronous wheel 3 56 drives the synchronous wheel 4 57 through the synchronous belt, the synchronous wheel 4 57 rotates together with the synchronous wheel 3 56, thereby making the concentric shaft 512, the linkage shaft 511 and the rotating shaft 510 rotate together with the synchronous wheel 4 57. During the rotation of the rotating shaft 510, the limiting groove on the surface of the rotating shaft 510 acts as a connection point to drive the spring spring 59 to continuously contract, so that the spring spring 59 accumulates force.

[0059] When the rotating shaft 510 rotates, the ratchet 63 is driven to rotate counterclockwise. When the ratchet 63 rotates counterclockwise, the one-way teeth on the outside of the ratchet 63 slide over the inside of the pawl 64 one by one and squeeze the pawl 64, so that the pawl 64 rotates toward the side close to the small compression spring 6501 with the rotating connection with the disc 65 as the axis. At this time, the small compression spring 6501 is compressed. When the pawl 64 leaves the angle between the one-way teeth on the ratchet 63, the small compression spring 6501 stretches and pushes the pawl 64 into the angle between the one-way teeth on the next ratchet 63. In this way, the rotating shaft 510 will not drive the disc 65 and the reciprocating screw 66 to rotate together during the counterclockwise rotation.

[0060] When the output shaft of the servo motor 21 completes the rotation of the preset number of circles, it stops rotating. At this time, the sample tube 1 41 and the sample tube 2 42 complete the shaking synchronously. Then the staff presses the operation button on the outer wall of the device body 1 to make the telescopic end of the electric telescopic rod 61 contract, so that the linkage shaft 511 is completely separated from the rotating shaft 510, and further makes the rotating shaft 510 lose the restriction of the linkage shaft 511 and the concentric shaft 512. At this time, the clockwork spring 59 in the restriction disk 58 releases the stored force, so that the rotating shaft 510 reverses;

[0061] During the reverse rotation of the rotating shaft 510, the ratchet wheel 63 rotates clockwise with the rotating shaft 510, thereby driving the disc 65 and the reciprocating screw 66 to rotate, so that the threaded block 610 moves horizontally along the guide rod 69 in a direction away from the disc 65, until the force stored in the limiting disk 58 is completely released. At this time, the threaded block 610 has moved to the bottom of the loading platform 33, and the test tube 611 is located directly below the sample tube 1 41 and the sample tube 2 42;

[0062] By arranging a loading platform 33 and a threaded block 610 inside the device body 1, and during the rotation of the output shaft of the servo motor 21, the rotating shaft 510 is driven to rotate, so as to store force in the clockwork spring 59. Compared with the method of the prior art of shaking sample tube 1 41 and sample tube 2 42 in a specific area and then manually moving sample tube 1 41 and sample tube 2 42 to the detection area, the present device integrates the loading platforms 33 and 410 inside the device body 1, reducing the physical handling and repeated connection of samples. The staff only needs to perform the initial sample loading to realize the fully automatic process from shaking to preparing for detection, thereby reducing human intervention.

[0063] The device can automatically drip the detection liquid into the test tube 611, and the detailed steps are as follows:

[0064] Since the number of spring buckles 618 on the side of the limiting ring 619 close to the push rod 616 represents the amount of the test liquid dripped in, the staff first adjusts the amount of the test liquid dripped in according to the needs, grabs the limiting ring 619 by hand, makes the limiting ring 619 slide on the outer surface of the liquid limiting tube 617, and adjusts the number of spring buckles 618 at the rear end of the limiting ring 619 as needed. When the position of the limiting ring 619 is determined, the fixing bolt at the bottom end of the limiting ring 619 is rotated, so that the fixing ring 619 is fixed to the outer surface of the liquid limiting tube 617 through the fixing bolt, and is fixed;

[0065] During the horizontal movement of the threaded block 610 along the guide rod 69 in the direction away from the disc 65, the threaded block 610 contacts the extrusion plate 613, and the push rod 616 enters the interior of the liquid limiting tube 617 while contacting the extrusion plate 613. As the threaded block 610 continues to move, the extrusion plate 613 moves horizontally along the groove 1 on the bracket 67 in the direction close to the piston cylinder 614. During this process, the extrusion plate 613 drives the piston rod on the piston cylinder 614 to move together, so that the piston rod moves toward The piston cylinder 614 is moved horizontally in the direction close to one side, and the detection liquid in the piston cylinder 614 is pushed to the dropper 616, and then dripped into the interior of the test tube 611 through the dropper 616 until the push rod 616 is blocked by the blocking bar in the middle of the limit ring 619. At this time, the dripping of the detection liquid is completed. When the staff finds that the push rod 616 is blocked by the blocking bar in the middle of the limit ring 619 and cannot continue to move horizontally, the staff turns off the servo motor 21 through the controller, so that the threaded block 610 and the push rod 616 stop moving;

[0066] When the threaded block 610 contacts the squeezing plate 613, the open portion of the test tube 611 on the side close to the squeezing plate 613 is already below the opening of the end of the dropper 616 away from the dropper 615. At this time, the threaded block 610 continues to move from the test tube 611 close to the squeezing plate 613 to the side away from the test tube 611, which is the distance of the next movement. When the threaded block 610 stops moving horizontally, the open portion of the test tube 611 is still below the opening of the end of the dropper 616 away from the dropper 615, so that the detection liquid in the dropper 615 can completely enter the interior of the test tube 611.

[0067] In the process of moving the test tube 611 to the bottom of the sample tube 1 41 and the sample tube 2 42, the piston rod of the piston cylinder 614 moves to drip the detection liquid into the interior of the test tube 611. Compared with the method of manually picking up the test tube 611 and manually dripping the detection liquid in the prior art, the present device can control the amount of the detection liquid dripped in and then drip the detection liquid. By controlling the amount of the detection liquid dripped in, the needs of detecting different microorganisms can be met, and the same amount of detection liquid can be ensured to be dripped into each test tube 611, thereby avoiding errors caused by different personnel in manual operation. The automated process reduces the direct contact between the operator and the reagents and samples, thereby avoiding and reducing the risk of cross contamination and environmental pollution.

[0068] Embodiment 2:

[0069] Further, such as Figure 12 to Figure 14 As shown, the flow dividing assembly includes a retaining groove 71 provided on the surface of the loading platform 33, and the bottom surfaces of the sample tube 1 41 and the sample tube 2 42 are provided with solenoid valves 72, and the number of the solenoid valves 72 is not less than four, wherein the number of the solenoid valve 72 on the bottom surface of the sample tube 1 41 is one, and the number of the solenoid valves 72 on the bottom surface of the sample tube 2 42 is three, and the tops of the sample tube 1 41 and the sample tube 2 42 are provided with air holes, which are used to ensure that the air pressure inside the sample tube 1 41 and the sample tube 2 42 is equal to the external environment, and the sample tube 1 41 and the sample tube 2 42 are fixedly connected to the side of the solenoid valve 72, and the fixing bar 73 is provided with not less than Two, the side of the fixing bar 73 away from the sample tube 1 41 and the sample tube 2 42 is rotatably connected with a rotating shaft 74, and the rotating shaft 74 is equidistantly fixedly connected with a fitting plate 75, the top surface of the fitting plate 75 is in close contact with the bottom surface of the electromagnetic valve 72, and there are no less than four fitting plates 75, among which the number of the fitting plates 75 on the bottom surface of the sample tube 1 41 is one, and the number of the fitting plates 75 on the bottom surface of the sample tube 2 42 is three, the side of the fitting plate 75 away from the electromagnetic valve 72 is fixedly connected with a trigger rod 76, and the side of the fitting plate 75 away from the trigger rod 76 is fixedly connected with no less than two groups of tension springs 77, each group includes two tension springs 77, and the tension springs 77 are in a stretched state.

[0070] Further, such as Fig.12 As shown, the shape of the retaining groove 71 is adapted to the shapes of the sample tube 1 41 and the sample tube 2 42 .

[0071] Further, such as Fig.13 and Fig.14 As shown, a sealing gasket is provided on the bottom surface of the solenoid valve 72, the solenoid valve 72 is located obliquely above the test tube 611, the trigger rod 76 and the push rod 612 are located on the same horizontal line, a contact switch is provided on the trigger rod 76, and the contact switch is electrically controlled and connected to the solenoid valve 72, one group of tension springs 77 is fixedly connected to sample tube 1 41, and another group of tension springs 77 is fixedly connected to sample tube 2 42.

[0072] When working: the device introduces the sample mixture and distilled water into the test tube 611 while dripping the detection liquid. The detailed steps are as follows:

[0073] When the threaded block 610 moves horizontally along the guide rod 69 toward the direction away from the disc 65, and in the process of pushing the extrusion plate 613, the push rod 612 on the surface of the threaded block 610 pushes the trigger rod 76, thereby pressing the contact switch on the trigger rod 76, so that the solenoid valve 72 is opened. When the push rod 612 contacts the trigger rod 76, the test tube 611 is located below the sample tube 1 41 and the sample tube 2 42. When the threaded block 610 stops moving, the test tube 611 is still located below the sample tube 1 41 and the sample tube 2 42.

[0074] When the push rod 612 pushes the trigger rod 76, the bonding plate 75 and the rotating shaft 74 move in a direction away from the electromagnetic valve 72 with the rotation connection with the fixed bar 73 as the axis. At this time, the electromagnetic valve 72 and the bonding plate 75 change from a closed state to an open state, and the tension spring 77 is stretched.

[0075] When the solenoid valve 72 is in the open state, the distilled water in the sample tube 1 41 flows into the control group in the test tube 611 through the solenoid valve 72 at the bottom of the sample tube 1 41, and the sample mixture in the sample tube 2 42 flows into the experimental group in the test tube 611 through the solenoid valve 72 at the bottom of the sample tube 2 42. When the liquid inside the sample tube 1 41 and the sample tube 2 42 completely enters the test tube 611, the staff presses the operation button on the outer wall of the device body 1 to extend the telescopic end of the electric telescopic rod 61, so that the follower ring 62 drives the linkage shaft 511 to move horizontally toward the side close to the rotating shaft 510, and the linkage shaft 511 is reinserted into the interior of the rotating shaft 510. When the electric telescopic rod 61 After the telescopic end is completely extended, the staff then presses the operating button on the outer wall of the device body 1 to rotate the output shaft of the servo motor 21. As known from the first embodiment, the spring spring 59 accumulates force during the rotation of the output shaft of the servo motor 21. When the output shaft of the servo motor 21 completes the rotation of the preset number of circles, the output shaft stops rotating. Then the staff presses the operating button on the outer wall of the device body 1 to retract the telescopic end of the electric telescopic rod 61, so that the linkage shaft 511 is completely separated from the rotating shaft 510, and further the rotating shaft 510 loses the restriction of the linkage shaft 511 and the concentric shaft 512. At this time, the spring spring 59 in the restriction disk 58 releases the stored force, so that the rotating shaft 510 is reversed.

[0076] During the process of the rotating shaft 510 reversing, the reciprocating screw 66 is driven to rotate, so that the threaded block 610 moves horizontally along the guide rod 69 toward the side close to the disc 65, until the force stored in the limiting disc 58 is completely released. At this time, the threaded block 610 has moved to the initial position, and the detection and analysis of microorganisms can be carried out at this time;

[0077] By pushing the extrusion plate 613 through the threaded block 610, the liquid in the sample tube 1 41 and the sample tube 2 42 is introduced into the test tube 611. Compared with the method of adding distilled water, mixed liquid and detection liquid into the test tube 611 twice in the prior art, the present device adds distilled water and mixed liquid into the corresponding test tube 611 at the same time as the detection liquid is added. This synchronization can eliminate the influence of the time difference and ensure the strict comparison between the control group and the experimental group. In addition, multiple steps can be completed at the same time through one operation, which significantly reduces the number of steps required to be performed during the experiment, thereby shortening the overall experimental time, and at the same time reduces the opportunity for operators to directly contact samples and reagents, reducing the risk of contamination.

[0078] By pushing the rod 612 to contact and disengage from the trigger rod 76, the solenoid valve 72 can be opened and closed in time, thereby avoiding the situation in the prior art where the liquid in the sample tube 1 41 and the sample tube 2 42 drips onto the operating table during the process of introducing the sample tube 611 due to staff errors, thereby contaminating the operating table and requiring additional cleaning work. In addition, when the liquid drips onto the operating table, it cannot be guaranteed that the quantitative relationship between the sample tube 1 41 and the sample tube 2 42 introduced into the test tube 611 is consistent with the requirements, thereby causing the test to be invalid and requiring re-testing.

[0079] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sample conditioning device for a microbial detection and analysis instrument, characterized in that: The device comprises a device body (1), wherein the inner cavity of the device body (1) is fixedly connected to a fixing plate (2), the fixing plate (2) is fixedly connected to a servo motor (21), the output shaft of the servo motor (21) is fixedly connected to a rotating disk (31), the side of the rotating disk (31) away from the servo motor (21) is rotatably connected to a crank (32), the end of the crank (32) away from the rotating disk (31) is rotatably connected to a loading platform (33), the inner cavity of the device body (1) is fixedly connected to a guide rail (34), the loading platform (33) is provided with a sample tube 1 (41) and a sample tube 2 (42), and the loading platform (33) is slidably connected to the guide rail (34); A flow divider assembly is provided below the loading platform (33), and the flow divider assembly includes a retaining groove (71) provided on the surface of the loading platform (33). Solenoid valves (72) are provided at the bottom of the sample tube 1 (41) and the sample tube 2 (42), and the number of the solenoid valves (72) is not less than four. Air holes are provided at the top of the sample tube 1 (41) and the sample tube 2 (42). A fixing bar (73) is fixedly connected to the bottom of the sample tube 1 (41) and the sample tube 2 (42), and the fixing bar (73) is provided with At least two, the fixing strip (73) is rotatably connected to a rotating shaft (74) on one side away from sample tube one (41) and sample tube two (42), and a bonding plate (75) is equidistantly fixedly connected to the rotating shaft (74), and at least four bonding plates (75) are provided, and a trigger rod (76) is fixedly connected to the side of the bonding plate (75) away from the solenoid valve (72), and at least two groups of tension springs (77) are fixedly connected to the side of the bonding plate (75) away from the trigger rod (76), and each group includes two tension springs (77).

2. A sample adjustment device for a microorganism detection and analysis instrument according to claim 1, characterized in that: The inner cavity of the fixed plate (2) is provided with a force storage component, and the force storage component comprises a synchronous wheel (51) sleeved and fixedly connected to the outer surface of the output shaft of the servo motor (21), the synchronous wheel (51) is connected to the synchronous wheel (52) through a synchronous belt transmission, the synchronous wheel (52) is fixedly connected to the bevel gear (53) on the side away from the fixed plate (2), the outer side of the bevel gear (53) is meshedly connected to the bevel gear (54), and the bevel gear (54) is fixedly connected to the side away from the bevel gear (53). A connecting rod (55) is fixedly connected to a synchronous wheel three (56) on the connecting rod (55), and the synchronous wheel three (56) is connected to a synchronous wheel four (57) through a synchronous belt transmission. A limiting disk (58) is fixedly connected to the inner cavity of the device body (1), and a spring spring (59) and a rotating shaft (510) are rotatably connected in the limiting disk (58). A linkage shaft (511) is slidably connected in the rotating shaft (510), and a concentric shaft (512) is slidably connected to the side of the linkage shaft (511) away from the rotating shaft (510).

3. A sample adjustment device for a microorganism detection and analysis instrument according to claim 2, characterized in that: The synchronous wheel 2 (52) is rotatably connected to the fixed plate (2), the connecting rod (55) is rotatably connected to the fixed plate (2) through a support block, the connecting rod (55) is rotatably connected to the device body (1), and the synchronous wheel 4 (57) is rotatably connected to the device body (1).

4. A sample adjustment device for a microorganism detection and analysis instrument according to claim 3, characterized in that: The outer surface of the rotating shaft (510) located in the inner cavity of the limiting disk (58) is provided with a limiting groove, the limiting groove on the surface of the rotating shaft (510) is plugged into the spring spring (59), and the concentric shaft (512) is fixedly connected to the synchronous wheel four (57).

5. A sample adjustment device for a microorganism detection and analysis instrument according to claim 2, characterized in that: The inner cavity of the fixed plate (2) is provided with a trigger assembly, and the trigger assembly comprises an electric telescopic rod (61) fixedly connected to the inner cavity of the device body (1), the telescopic end of the electric telescopic rod (61) is fixedly connected to a follower ring (62), the end of the rotating shaft (510) away from the synchronous wheel four (57) is fixedly connected to a ratchet (63), the outer side of the ratchet (63) is slidably connected to a pawl (64), and the pawl (64) is provided with no less than two, and the pawl (64) away from the rotating shaft (510) is fixedly connected to the outer side of the ratchet (63). One side is rotatably connected with a disc (65); the side of the disc (65) close to the ratchet (63) is fixedly connected with a small compression spring (6501) having the same number as the ratchet pawl (64); the side of the disc (65) away from the ratchet (63) is fixedly connected with a reciprocating screw rod (66); the end of the reciprocating screw rod (66) away from the disc (65) is rotatably connected with a bracket (67); the side of the bracket (67) close to the disc (65) is fixedly connected with a spring (68) and a guide rod (69); the spring (68) At least four of them are provided, the guide rod (69) is slidably connected with a threaded block (610), a test tube (611) is clamped on the threaded block (610), at least four of the test tubes (611) are provided, a push rod (612) whose number is the same as the test tubes (611) is fixedly connected to the side of the threaded block (610) close to the test tube (611), an extrusion plate (613) is slidably connected to the bracket (67), and a piston cylinder (613) whose number is the same as the test tubes (611) is fixedly connected to the bracket (67). 14), the interior of the piston cylinder (614) is connected to a dropper (615), a side of the threaded block (610) away from the synchronous wheel four (57) is fixedly connected to a push rod (616), a side of the bracket (67) close to the guide rod (69) is fixedly connected to a liquid limiting tube (617), a limiting opening is provided on the outer surface of the liquid limiting tube (617), a plurality of limiting openings are provided, a spring buckle (618) is fixedly connected in the limiting opening, and a limiting ring (619) is slidably connected to the outer surface of the liquid limiting tube (617).

6. A sample adjustment device for a microorganism detection and analysis instrument according to claim 5, characterized in that: The follower ring (62) is slidably connected to the linkage shaft (511), the small compression spring (6501) is fixedly connected to the pawl (64), the bracket (67) is fixedly connected to the inner cavity of the device body (1), the guide rod (69) is fixedly connected to the device body (1), and the reciprocating screw rod (66) is threadedly connected to the threaded block (610).

7. The sample adjustment device for a microorganism detection and analysis instrument according to claim 5, characterized in that: The push rod (612) and the dropper (615) are arranged in a staggered manner, the piston rods of the four piston cylinders (614) are fixedly connected to the extrusion plate (613), the dropper (615) is fixedly connected to the device body (1) through a support plate, the end of the dropper (615) away from the piston cylinder (614) is directed obliquely downward, the middle part of the limiting ring (619) is fixedly connected to a blocking bar, and the bottom end of the limiting ring (619) is rotatably connected to a fixing bolt.

8. The sample adjustment device for a microorganism detection and analysis instrument according to claim 1, characterized in that: The retaining groove (71) is compatible with sample tube one (41) and sample tube two (42).

9. The sample adjustment device for a microorganism detection and analysis instrument according to claim 1, characterized in that: A sealing gasket is provided on the solenoid valve (72), and the solenoid valve (72) is located obliquely above the test tube (611). The trigger rod (76) and the push rod (612) are located on the same horizontal line. A contact switch is provided on the trigger rod (76), and the contact switch is electrically controlled and connected to the solenoid valve (72). One group of the tension springs (77) is fixedly connected to sample tube one (41), and another group of the tension springs (77) is fixedly connected to sample tube two (42).

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