Device for detecting microorganisms in water body

Abstract

The invention relates to the technical field of biological detection, in particular to a water microorganism detection device which comprises a biological detection bin, a transfer box, a bracket, a movable suspension seat and a counter weight type sampler, the counter weight type sampler is of a cylindrical structure, and a plurality of sample containing hole cavities are formed in the counter weight type sampler around an axis array; each sample loading hole cavity is used for independently collecting a water sample at a target position, and the top of the transfer box is provided with a taking and placing opening for taking and placing a detection test tube. According to the invention, the sample loading hole cavity is used for sampling independently, and the position of the counterweight type sampler is adjustable, so that water samples at different point locations can be collected independently and continuously, the collection operation efficiency is high, the situation that the same sampling structure is shared for multi-point location sampling is avoided, the collected water samples can be temporarily stored in the sample loading hole cavity, and the sampling efficiency is high. The water samples can be respectively transferred into different detection test tubes subsequently, so that the water samples at all point positions are mutually independent and isolated before detection, mutual pollution of the water samples is avoided, and the accuracy of subsequent detection results is improved.

Description

Technical Field

[0001] The invention relates to the technical field of microorganism detection, and in particular to a water body microorganism detection device. Background Art

[0002] Water microbial testing is an important method to assess water quality and safety by testing the number of microorganisms in water samples. Water microbial testing can help identify pollution sources, monitor ecosystem health, and protect public health. By testing the amount of microorganisms in water, we can learn about the status of microbial communities or some special populations in the water, and further understand the changes in the water ecosystem, which is crucial for the management of drinking water, swimming waters, and agricultural and industrial water.

[0003] At present, water quality problems are becoming increasingly serious. In order to obtain the specific situation of water quality, a detection device is usually used to analyze and detect the amount of microorganisms in the water body. Referring to the Chinese invention patent application with application number 202310491663.7, it discloses an environmental protection detection equipment and detection method for microorganisms in water bodies. The invention patent application can protect the detector through the set box body, support plate, base, box cover and support block, and is convenient to carry. The set water pump, water outlet pipe, suction pipe, mounting plate, winding rod, connecting head, ring groove, connecting cavity, hose, connecting plate, handle and anti-slip ring can be used to facilitate the extraction of water bodies of different depths by retracting and releasing the length of the hose.

[0004] However, although the above patent application can sample water bodies in different areas, the samples from different areas share the same sampling mechanism composed of components such as hoses, and there is mutual contamination between water samples from different target areas, which affects the accuracy of the test results.

[0005] In addition, when sampling with a hose, after the previous batch of water samples is collected, some water remains in the hose. In order to ensure normal sampling of the next batch, the remaining water in the hose needs to be discharged. However, the residual water in the hose is difficult to drain regardless of whether it is released into the water body or in a reeled state. Summary of the invention

[0006] The purpose of the present invention is to provide a water microorganism detection device to solve the technical problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions.

[0008] A water body microorganism detection device, the water body microorganism detection device comprises a biological detection chamber, a transfer box, a bracket, a movable suspension seat and a counterweight sampler. The counterweight sampler is a cylindrical structure, in which a plurality of sample loading cavities are arranged in an array around an axis, each sample loading cavity is used to separately collect water samples at a target position, the top of the transfer box is provided with a take-in and put-out port for taking in and putting in a detection test tube, the water sample in each sample loading cavity is transferred to the corresponding detection test tube at the top of the transfer box, the biological detection chamber is arranged on one side of the transfer box, the detection slot of the biological detection chamber extends into the transfer box, the detection test tube containing the water sample extends into the detection slot through the bottom for detection, the bracket for positioning and placing the counterweight sampler is slidably installed on the top of the transfer box, the movable suspension seat is connected to a first winding rope in a first winding-up bin wound up on the side of the transfer box, the counterweight sampler is connected to a second winding rope in a second winding-up bin wound up at the bottom of the movable suspension seat, and the movable suspension seat is used to drive the counterweight sampler to transfer in the water body.

[0009] By utilizing the sample loading cavity for separate sampling and combining it with the adjustable position of the counterweight sampler, water samples at different points can be collected separately and continuously. The collection operation is highly efficient and it avoids sharing the same set of sampling structures for multi-point sampling. The collected water samples can be temporarily stored in the sample loading cavity and subsequently transferred to different test tubes, ensuring that the water samples at each point are independently isolated from each other before testing, avoiding mutual contamination of water samples and improving the accuracy of subsequent test results.

[0010] Preferably, a sampling mechanism is provided in each sampling hole cavity on the counterweight sampler, and each sampling mechanism is used to suck the water sample at the target position into the corresponding sampling hole cavity, or to pressurize and discharge the water sample in the corresponding sampling hole cavity. A driving mechanism is provided on the top of the counterweight sampler, and the driving mechanism is used to drive each sampling mechanism to perform corresponding individual work. The counterweight sampler consists of a shell seat and a top cover, and the top cover is threaded and detachably installed on the top of the shell seat. The sampling hole cavity is arranged in the shell seat, and the top part passes through the top end surface of the shell seat. The bottom of the shell seat is provided with flow guide nozzles corresponding to the sampling hole cavity at positions corresponding to the positions of the sampling holes, and each flow guide nozzle is installed with an electromagnetic valve near its bottom.

[0011] Preferably, the sampling mechanism includes a piston, an arch frame, an adjusting threaded rod and a guide rod. The piston is correspondingly installed in the sample loading hole cavity and slides tightly with the inner wall of the sample loading hole cavity. The arch frame is correspondingly installed on the top of the piston, and a vertically through-threaded hole is provided on the top of the arch frame. The adjusting threaded rod is rotatably installed on the top cover and passes through the threaded hole with a matching thread vertically downward. A guide rod is fixed on the top of each arch frame, and each guide rod slides vertically upward to extend to the top of the top cover.

[0012] Preferably, the driving mechanism includes a first driving motor, a swing arm, a second driving motor, a driving wheel and a driven wheel whose number is equal to the sample loading cavities, the first driving motor is fixed on the top cover, the swing arm is fixed on the output shaft of the first driving motor and can rotate around the axis of the shell seat, the second driving motor is fixed on the side of the swing arm away from the first driving motor, the output shaft of the second driving motor is fixed with a driving wheel, the top end of each adjusting threaded rod extends to the top of the top cover and is fixedly mounted with a driven wheel, and the outer edge of the driving wheel corresponds to the outer edge of each driven wheel and is in abutment with each other.

[0013] Preferably, the outer edge walls of the driving wheel disc and each driven wheel disc are fixedly covered with a rubber sleeve, and the outer edge walls of each rubber sleeve are respectively provided with vertically extending ridges in an annular array.

[0014] Preferably, slide rails are fixed on both sides of the top of the transfer box, and sliding seats are installed on the two slide rails for limited sliding. The bracket is installed on the top of the two sliding seats, and a placement groove is provided above the bracket for the bottom of the shell seat to match and insert. A positioning block is provided in the placement groove and can be matched and inserted into the positioning groove at the bottom of the shell seat to achieve the positioning and placement of the shell seat. Vertical through holes are provided on the bottom wall of the placement groove at positions corresponding to the positions of each guide nozzle for the guide nozzle to pass through.

[0015] Preferably, a third drive motor is fixed on the inner bottom wall of the transfer box, and the output shaft of the third drive motor is mounted with a test tube tray through a vertically extending connecting arm. The test tube tray is provided with a circular array of sockets which can be aligned one by one with the perforations, and the sockets are provided for matching and inserting test tubes. At least two support rods extending vertically upward are fixed on the outer periphery of each socket on the upper surface of the test tube tray, and the top of the support rods is in abutment with the top flange of the test tube.

[0016] Preferably, a fixing seat is fixed on the inner wall of the transfer box, an electric push cylinder is vertically fixed above the fixing seat, a support plate that is in contact with the lower surface of the test tube tray is installed on the end of the telescopic rod of the electric push cylinder, and the connecting arm is composed of a connecting rod and a rectangular connecting rod. The connecting rod is vertically fixed on the output shaft of the third drive motor, and a vertically extending direction hole cavity is provided on the top of the connecting rod. The rectangular connecting rod is matched and slidably inserted in the direction hole cavity, and the test tube tray is fixed on the top of the rectangular connecting rod.

[0017] Preferably, a ball groove is provided on the support plate, and a rolling ball abutting against the test tube tray is embedded in the ball groove.

[0018] Preferably, a first rubber ring that is pressed and matched with the inner end wall of the top cover is fixed to the outer periphery of the upper end surface of the shell seat located at the top of each sample loading cavity, and a second rubber ring that is pressed and matched with the surface of the shell seat is fixed to the bottom end of the top cover.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0020] 1. The present invention utilizes the sample loading cavity for separate sampling, and combined with the adjustable position of the counterweight sampler, can collect water samples at different points separately and continuously, with high collection efficiency, and avoids sharing the same set of sampling structures for multi-point sampling. The collected water samples can be temporarily stored in the sample loading cavity, and can be transferred to different test tubes later, ensuring that the water samples at each point are independently isolated from each other before testing, avoiding mutual contamination of water samples, and improving the accuracy of subsequent test results.

[0021] 2. The present invention configures the counterweight sampler as a detachable assembly structure consisting of a shell base and a top cover, which is convenient for disassembly after sampling is completed, so that each sample loading cavity is open and the components of each sampling mechanism are exposed for cleaning, thereby ensuring the cleanliness of the sampling site for the next sampling work.

[0022] 3. The present invention utilizes a sampling method in which the piston moves upward to draw water and presses downward to drain water. By controlling the movement stroke of the piston, the amount of water samples collected and the amount of water samples transferred to the test tube to be tested can be effectively controlled, thereby more accurately controlling the amount of water sample collected and transferred each time, ensuring the consistency of sample amounts at different points, reducing errors in the analysis and judgment of water sample microbial test results due to inconsistent sample amounts, and further improving the reliability of the test results.

[0023] 4. The present invention installs an arch frame on the piston, and uses the adjusting threaded rod to threadably drive the arch frame to move up and down to drive the piston to move up and down, instead of using the adjusting threaded rod to threadably drive the piston to move up and down in the existing conventional technology. This can avoid the gap between the adjusting threaded rod and the piston thread connection that causes gas and water samples to flow up and down and affect the control of the water sample collection and discharge volume.

[0024] 5. The present invention sets a driving mechanism, utilizes the friction generated by the driving wheel and the driven wheel at different points to transmit the power, utilizes the first driving motor to drive the swing arm to swing, realizes the adjustment of the position of the second driving motor and the driving wheel, realizes the effective distribution of the transmission path, and is convenient for driving a certain piston individually to extract samples and press down to discharge samples. The lifting and lowering movement of each piston shares the same driving source, saving the equipment maintenance cost.

[0025] 6. The electric push cylinder in the present invention is involved in pushing the test tube tray upward so that the guide nozzle is inserted into the test tube for accurate transfer of water samples, and is also involved in lowering the test tube tray until the bottom of the test tube is inserted into the detection groove for detection, and is also involved in pushing the test tube tray upward so that the top of the test tube is extended to the top of the transfer box, so as to facilitate the removal of the test tube for processing. One component has multiple uses, reducing the overall structural complexity of the device, and will not affect the layout of other components due to the excessive space occupied by the arrangement of multiple drive structures in the transfer box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is one of the partial structural schematic diagrams of the surface of the counterweight type sampler in the present invention;

[0028] Figure 3 The second schematic diagram of the local structure of the surface of the counterweight sampler in the present invention;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the counterweight type sampler in the present invention;

[0030] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0031] Figure 6 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0032] Figure 7 It is a schematic diagram of the local structure of the transfer box surface in the present invention;

[0033] Figure 8 It is a schematic cross-sectional view of the local structure of the transfer box in the present invention;

[0034] Fig. 9 for Figure 8 A magnified schematic diagram of the structure at C in the middle;

[0035] Fig.10 It is a detailed structural schematic diagram of the interior of the transfer box in the present invention;

[0036] Fig.11 It is a detailed structural schematic diagram of the bracket in the present invention;

[0037] Fig.12 A schematic diagram of the upward sampling of the test tube;

[0038] Fig.13 A schematic diagram of a test tube descending into a test tank for testing;

[0039] Fig.14 This is a schematic diagram of the test tube going up to be taken out.

[0040] In the figure: 01, biological detection chamber; 011, detection slot; 02, first winding rope; 021, first winding and releasing chamber; 03, second winding rope; 031, second winding and releasing chamber; 04, detection test tube; 1, transfer box; 2, bracket; 201, slide rail; 202, sliding seat; 21, placement groove; 22, perforation; 23, positioning block; 3, mobile suspension seat; 31, thruster; 4, counterweight sampler; 41, shell seat; 411, positioning groove; 412, first rubber ring; 42, top cover; 421, second rubber ring; 43, sample loading cavity; 44, guide nozzle; 441, electromagnetic Valve; 5. Sampling mechanism; 51. Piston; 52. Arch frame; 521. Threaded hole; 53. Adjusting threaded rod; 54. Guide rod; 6. Driving mechanism; 61. First driving motor; 62. Swing arm; 63. Second driving motor; 64. Driving wheel; 65. Driven wheel; 66. Rubber sleeve; 7. Third driving motor; 71. Connecting arm; 711. Connecting rod; 712. Directional hole cavity; 713. Rectangular connecting rod; 8. Test tube tray; 81. Socket; 82. Support rod; 9. Fixed seat; 91. Electric push cylinder; 92. Support plate; 921. Ball groove; 922. Rolling ball. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-14 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0042] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0044] See also Figure 1-Figure 11The present invention provides a water body microorganism detection device, which includes a biological detection chamber 01, a transfer box 1, a bracket 2, a movable suspension seat 3 and a counterweight sampler 4. The counterweight sampler 4 is a cylindrical structure, in which a plurality of sample loading cavities 43 are arranged in an array around an axis, each sample loading cavity 43 is used to separately collect water samples at a target position, and the top of the transfer box 1 is provided with a take-in and put-out port for taking in and putting in a test tube 04, so as to facilitate putting a new test tube 04 into the transfer box 1 or taking out a tested test tube for processing, and the water sample in each sample loading cavity 43 is transferred to the corresponding test tube 04 at the top of the transfer box 1, and the biological detection chamber 01 is arranged on one side of the transfer box 1, and the detection slot 011 of the biological detection chamber 01 extends into the transfer box 1, and the test tube 04 containing the water sample extends into the detection slot 011 through the bottom for detection.

[0045] Among them, the biological detection chamber 01 is an ATP biological detection device that already exists in the prior art, such as an ATP fluorescence detector. Therefore, the specific structure and working principle of the biological detection chamber 01 are no longer disclosed in detail. In this application, when the bottom of the detection test tube 04 containing a water sample is inserted into the detection groove 011 of the biological detection chamber 01, since the living cells of the organism contain a constant amount of ATP, and the ATP fluorescence detector is based on the principle of firefly luminescence, the detected ATP content can more clearly indicate the microbial content in the water sample, thereby realizing the detection of microorganisms in the water sample.

[0046] The bracket 2 for positioning and placing the counterweight sampler 4 is slidably installed on the top of the transfer box 1. The counterweight sampler 4 has the ability of sliding adjustment. Then, after the counterweight sampler 4 is slid and adjusted to the top of the transfer box 1, the counterweight sampler 4 is positioned and placed on the bracket 2 to ensure that the collected samples can be transferred to the detection test tube 04. At the same time, after the detection is completed, the bracket 2 is slid to one side to make room above the transfer box 1, so that the detection test tube 04 can be taken out of the transfer box 1 for processing.

[0047] The mobile suspension seat 3 is connected to the first winding rope 02 wound in the first winding and unwinding bin 021 on the side of the transfer box 1. Specifically, one end of the first winding rope 02 is wound on the winding and unwinding mechanism in the first winding and unwinding bin 021, and the other end is connected to the side of the mobile suspension seat 3. The first winding rope 02 can be rotated, wound or released through the winding and unwinding mechanism to adapt to the displacement of the mobile suspension seat 3. The counterweight sampler 4 is connected to the second winding rope 03 wound in the second winding and unwinding bin 031 at the bottom of the mobile suspension seat 3. Specifically, one end of the second winding rope 03 is wound on the winding and unwinding mechanism in the second winding and unwinding bin 031, and the other end is connected to the top of the counterweight sampler 4. The second winding rope 03 can be wound or released through the winding and unwinding mechanism, so as to facilitate the placement of the counterweight sampler 4 at different depths in the water body for sampling. The winding and unwinding mechanism adopts the existing technology and is not described in detail in this application.

[0048] The mobile suspension seat 3 is used to drive the counterweight sampler 4 to move in the water body. Specifically, thrusters 31 are respectively arranged on the four sides of the bottom of the mobile suspension seat 3. When the mobile suspension seat 3 is suspended on the liquid surface of the water body, the corresponding propulsion work of each thruster 31 can drive the mobile suspension seat 3 to move forward, backward, left and right on the water surface, so as to facilitate the traction of the counterweight sampler 4 to the target area for sampling. In addition, combined with the traction effect of the second winding rope 03 on the counterweight sampler 4, water samples of different depths in the target area can be collected, thereby realizing multi-point sampling to improve the accuracy of water sample detection. Among them, each thruster 31 is remotely controlled, which is convenient for remote control, consistent with the model aircraft propulsion mechanism in the prior art, and adopts the prior art, which is not described in detail in this application.

[0049] Among them, the counterweight sampler 4 has a counterweight, and after it sinks into the water body, it will not move at will, and finally the second winding rope 03 will be stretched as straight as possible to ensure that the counterweight sampler 4 is located as directly below the mobile suspension seat 3 as possible during sampling, so that the position of the mobile suspension seat 3 can be used to conveniently judge whether the sampling area of ​​the counterweight sampler 4 meets actual needs.

[0050] A sampling mechanism 5 is provided in each sampling cavity 43 on the counterweight sampler 4. Each sampling mechanism 5 is used to suck the water sample at the target position into the corresponding sampling cavity 43, or to pressurize and discharge the water sample in the corresponding sampling cavity 43. A driving mechanism 6 is provided on the top of the counterweight sampler 4. The driving mechanism 6 is used to drive each sampling mechanism 5 to perform corresponding individual work. By driving one of the sampling mechanisms 5 to work individually through the driving mechanism 6, the water sample can be sucked into the corresponding sampling cavity 43, thereby realizing the individual collection of the water sample. Moreover, when the water sample is transferred, by driving one of the sampling mechanisms 5 to work individually through the driving mechanism 6, the water sample in the sampling cavity 43 can be pressed individually into the corresponding detection test tube 04.

[0051] The present invention utilizes the sample loading cavity 43 for separate sampling, and combined with the adjustable position of the counterweight sampler 4, can collect water samples at different points separately and continuously, with high collection efficiency, and avoids sharing the same set of sampling structures for multi-point sampling. The collected water samples can be temporarily stored in the sample loading cavity 43, and can be transferred to different test tubes 04 respectively later, ensuring that the water samples at each point are independently isolated from each other before testing, avoiding mutual contamination of water samples, and improving the accuracy of subsequent test results.

[0052] After the sampling is completed, each sample loading cavity 43 and the sampling mechanism 5 are contaminated by the water body, and there are residual dirt in the sample loading cavity 43 and on the sampling mechanism 5, which will affect the next sampling. In order to solve this problem, the present invention has made the following improvements:

[0053] like Figures 2 to 6 As shown, the counterweight sampler 4 is composed of a shell base 41 and a top cover 42. The top cover 42 is threaded and detachably installed on the top of the shell base 41. The sample loading cavity 43 is arranged in the shell base 41, and the top part passes through the top end surface of the shell base 41. Through the detachable design of the counterweight sampler 4, after disassembly, each sample loading cavity 43 is opened and the components of each sampling mechanism 5 are exposed, which is convenient for cleaning, ensuring the cleanliness of the sampling part, so as to facilitate the next sampling work.

[0054] Since the housing base 41 and the top cover 42 are assembled in a combined manner, the sealing is poor. In order to avoid air leakage and water leakage, Figure 6 As shown, a first rubber ring 412 that is pressed and collides with the inner end wall of the top cover 42 is fixed to the outer periphery of the top of each sample loading hole cavity 43 on the upper end surface of the shell seat 41. When the top cover 42 is screwed onto the shell seat 41 to a position, the first rubber ring 412 is pressed and collides between the top end surface of the shell seat 41 and the inner end wall of the top cover 42, effectively ensuring the sealing of the sample loading hole cavity 43. At the same time, a second rubber ring 421 that is pressed and collides with the surface of the shell seat 41 is fixed to the bottom end of the top cover 42. When the top cover 42 is screwed onto the shell seat 41 to a position, the second rubber ring 421 is pressed and collides between the lower end surface of the top cover 42 and the shell seat 41, playing a further sealing role, thereby effectively avoiding air leakage and water leakage.

[0055] In addition, at the bottom of the shell seat 41 and corresponding to the position of each sample loading cavity 43, a guide nozzle 44 corresponding to the sample loading cavity 43 is respectively provided. A solenoid valve 441 is installed near the bottom of each guide nozzle 44. When not sampling, the solenoid valve 441 is in a closed state to prevent water from entering the sample loading cavity 43 through the guide nozzle 44 and causing pollution. When the counterweight sampler 4 reaches the target point for sampling, the solenoid valve 441 is adjusted to an open state, and the water at the target point cooperates with the suction effect of the sampling mechanism 5 to enter the sample loading cavity 43 through the guide nozzle 44. After the sampling is completed, the solenoid valve 441 is immediately adjusted to a closed state, thereby achieving an independent sampling effect of the sample loading cavity 43.

[0056] like Figure 2 , Figure 4 and Figure 5As shown, the sampling mechanism 5 includes a piston 51, an arch frame 52, an adjusting threaded rod 53 and a guide rod 54. The piston 51 is correspondingly installed in the sample loading hole cavity 43 and slides tightly with the inner wall of the sample loading hole cavity 43. The arch frame 52 is correspondingly installed on the top of the piston 51, and a vertically penetrating threaded hole 521 is provided on the top of the arch frame 52. The adjusting threaded rod 53 is rotatably installed on the top cover 42 and passes through the threaded hole 521 with a vertically downward thread matching. A guide rod 54 is fixed on the top of each arch frame 52, and each guide rod 54 slides vertically upward and extends to Above the top cover 42, by rotating the adjusting threaded rod 53, under the threaded cooperation of the adjusting threaded rod 53 and the threaded hole 521, combined with the guiding and limiting effect of the sliding cooperation between the guide rod 54 and the top cover 42 on the arch frame 52, the arch frame 52 can be driven to drive the piston 51 to be raised and lowered in the sample loading cavity 43. When the piston 51 moves upward, a negative pressure can be generated in the sample loading cavity 43, so that the water sample can be sucked into the sample loading cavity 43 for storage. When the piston 51 moves downward, the water sample stored in the sample loading cavity 43 can be pressed out, which is convenient for the transfer of the water sample.

[0057] By utilizing the sampling method of the piston 51 moving upward to draw suction and pressing downward to drain water, and by controlling the movement stroke of the piston 51, the amount of water sample collected and the amount of water sample transferred to the test tube 04 to be tested can be effectively controlled, thereby being able to more accurately control the amount of water sample collected and transferred each time, ensuring the consistency of sample amounts at different points, reducing errors in the analysis and judgment of water sample microbial test results due to inconsistent sample amounts, and further improving the reliability of the test results.

[0058] In addition, by installing an arch frame 52 on the piston 51, the arch frame 52 is threadedly driven by the adjusting threaded rod 53 to move up and down to drive the piston 51 to move up and down, instead of using the adjusting threaded rod 53 to directly thread-drive the piston 51 to move up and down in the existing conventional technology, it can be avoided that there is a gap at the threaded connection between the adjusting threaded rod 53 and the piston 51, which causes gas and water samples to flow up and down and affect the control of the water sample collection and discharge volume.

[0059] like Figure 2 , Figure 4 and Figure 5 As shown, the driving mechanism 6 includes a first driving motor 61, a swing arm 62, a second driving motor 63, a driving wheel 64 and a driven wheel 65 whose number is equal to the sample loading cavities 43. The first driving motor 61 is fixed on the top cover 42, the swing arm 62 is fixed on the output shaft of the first driving motor 61, and can rotate around the axis of the shell base 41, the second driving motor 63 is fixed on the side of the swing arm 62 away from the first driving motor 61, and the driving wheel 64 is fixed on the output shaft of the second driving motor 63. The top end of each adjusting threaded rod 53 extends to the top of the top cover 42 and is fixedly mounted with a driven wheel 65. The outer edge of the driving wheel 64 corresponds to the outer edge of each driven wheel 65 and is in contact with each other.

[0060] The first drive motor 61 rotates to drive the swing arm 62, the second drive motor 63 and the drive wheel 64 to rotate as a whole until the drive wheel 64 contacts the driven wheel 65 above the sample loading hole 43 at the desired point. The second drive motor 63 works, and the output shaft of the second drive motor 63 drives the drive wheel 64 to rotate. Under the friction force between the drive wheel 64 and the driven wheel 65, the drive wheel 64 drives the driven wheel 65 and drives the corresponding adjusting threaded rod 53 to rotate, thereby providing drive for the suction sampling and downward pressure drainage of the piston 51.

[0061] By setting up a driving mechanism 6, the friction generated by the driving wheel 64 and the driven wheel 65 at different points is used for transmission, and the first driving motor 61 is used to drive the swing arm 62 to swing, so as to adjust the position of the second driving motor 63 and the driving wheel 64, and realize the effective distribution of the transmission path, so that it is convenient to drive a certain piston 51 individually to extract samples and press down to discharge samples. The lifting and lowering movement of each piston 51 shares the same driving source, which saves the equipment maintenance cost.

[0062] Since the driving wheel disc 64 and the driven wheel disc 65 are driven by friction, in order to ensure sufficient friction, it is necessary to ensure that there is hard squeezing between the driving wheel disc 64 and the driven wheel disc 65. If there is hard squeezing between the driving wheel disc 64 and the driven wheel disc 65, the driven wheel disc 65 will block and interfere with the position switching of the driving wheel disc 64 around the axis of the counterweight sampler 4. In order to solve this problem, the present application has made the following improvements:

[0063] please Figure 5 As shown, the outer edge walls of the driving wheel 64 and each driven wheel 65 are fixedly covered with a rubber sleeve 66. The rubber sleeve 66 is soft in texture and can be adaptively deformed when the driving wheel 64 and the driven wheel 65 collide with each other, which can not only ensure that the driven wheel 65 does not block the position of the driving wheel 64, but also increase the friction force when the driving wheel 64 drives the driven wheel 65 to rotate, thereby ensuring the reliability of friction drive, killing two birds with one stone. In addition, the outer edge walls of each rubber sleeve 66 are respectively provided with vertically extending ridges (not marked in the figure) in a circular array. By providing the ridges, the friction force during driving can be further improved.

[0064] As the instruction manual Figure 1 , Figure 7 and Fig.11 As shown, slide rails 201 are fixed on both sides of the top of the transfer box 1, and sliding seats 202 are installed on the two slide rails 201 for limited sliding. The bracket 2 is installed on the top of the two sliding seats 202. The sliding cooperation between the sliding seat 202 and the slide rails 201 provides the bracket 2 with the ability to slide and adjust, while ensuring that the sliding adjustment of the bracket 2 is smooth enough.

[0065] A placement groove 21 is provided above the bracket 2 for matching the bottom of the shell seat 41. A positioning block 23 is provided in the placement groove 21 and can be matched and inserted into the positioning groove 411 at the bottom of the shell seat 41 to achieve the positioning and placement of the shell seat 41. Vertical through holes 22 are provided on the bottom wall of the placement groove 21 at positions corresponding to the positions of each guide nozzle 44 for the guide nozzle 44 to pass through. When the counterweight sampler 4 is placed in the placement groove 21, the positioning block 23 is ensured to be aligned and inserted into the positioning groove 411 to achieve a positioning effect, thereby ensuring that the guide nozzles 44 can be aligned one by one, pass through the through holes 22 and extend to the bottom of the bracket 2.

[0066] like Figure 8 and Fig.10 As shown, a third drive motor 7 is fixed on the inner bottom wall of the transfer box 1, and a test tube tray 8 is installed on the output shaft of the third drive motor 7 through a vertically extending connecting arm 71. The test tube tray 8 is provided with a circular array of sockets 81 whose positions can be aligned one by one with the perforations 22, and the sockets 81 are provided for matching and inserting the test tubes 04. Before transferring the water sample into the test tubes 04, each test tube 04 is inserted into each socket 81, so that the distribution position of each test tube 04 can correspond one by one to the position of each guide nozzle 44.

[0067] In addition, at least two support rods 82 extending vertically upward are fixed on the outer periphery of each insertion hole 81 on the upper surface of the test tube tray 8, and the top of the support rod 82 is in abutment with the top flange of the test tube 04. After the test tube 04 is inserted into the insertion hole 81, the top of the support rod 82 is in abutment with the flange of the test tube 04 to support and lift the test tube 04, so that the top of the test tube 04 is much higher than the top of the test tube tray 8, thereby avoiding the difficulty in removing the test tube 04 due to the top of the test tube tray 8 being close to the top of the test tube tray 8.

[0068] like Figure 8 , Fig. 9 and Fig.10 As shown, a fixing seat 9 is fixed on the inner wall of the transfer box 1, and an electric push cylinder 91 is vertically fixed above the fixing seat 9. A support plate 92 that contacts and supports the lower surface of the test tube tray 8 is installed on the end of the telescopic rod of the electric push cylinder 91. Through the telescopic operation of the electric push cylinder 91, the end of the telescopic rod can push the test tube tray 8 to rise and fall under the contact action of the support plate 92, so that the test tube 04 can be synchronously raised and lowered.

[0069] In order to ensure that the test tube tray 8 and the output shaft of the third drive motor 7 are relatively fixed, so that the third drive motor 7 can drive the test tube tray 8 to rotate, and to ensure that the electric push cylinder 91 can push the test tube tray 8 to move up and down, the present invention has made the following improvements:

[0070] The connecting arm 71 is composed of a connecting rod 711 and a rectangular connecting rod 713. The connecting rod 711 is vertically fixed on the output shaft of the third drive motor 7. A vertically extending directional hole 712 is provided on the top of the connecting rod 711. The rectangular connecting rod 713 is matched and slidably inserted in the directional hole 712. The test tube tray 8 is fixed on the top of the rectangular connecting rod 713. The cross-sections of the rectangular connecting rod 713 and the directional hole 712 are designed to be squares that match each other. The rectangular connecting rod 713 is vertically slidably inserted in the directional hole 712. Therefore, it can not only serve as a transmission member between the output shaft of the third drive motor 7 and the test tube tray 8, but also ensure that the test tube tray 8 has the ability to be adjusted in the vertical direction.

[0071] Among them, Fig. 9 As shown, a ball groove 921 is provided on the support plate 92, and a rolling ball 922 is embedded in the ball groove 921 to abut against the test tube tray 8. The rolling ball 922 is in contact with the bottom of the test tube tray 8, thereby reducing the friction between the test tube tray 8 and ensuring that the rotation adjustment of the test tube tray 8 is easy and smooth.

[0072] Combination Fig.12 As shown, when the sampling is completed and the water samples at each point are transferred to the detection test tube 04, each detection test tube 04 is first inserted into the corresponding jack 81, and then the counterweight sampler 4 is positioned and placed on the bracket 2, and it is ensured that each guide nozzle 44 is aligned with each detection test tube 04 one by one, and then the electric push cylinder 91 is extended to push the test tube tray 8 and each detection test tube 04 to move upward, so that each guide nozzle 44 is correspondingly inserted into the detection test tube 04. When the water sample is transferred, due to the shielding effect of the side wall of the detection test tube 04 around the guide nozzle 44, the water sample can be accurately injected into the detection test tube 04 from the guide nozzle 44 to avoid the water sample splashing around and causing pollution.

[0073] Combination Fig.13 As shown, after the sample is transferred to each detection test tube 04, the third drive motor 7 is rotated to drive the corresponding detection test tube 04 to align with the detection slot 011, and then the electric push cylinder 91 is retracted until the bottom of the detection test tube 04 is inserted into the detection slot 011, and biological detection can be carried out. After the detection is completed, the electric push cylinder 91 is extended to push the test tube tray 8 and each detection test tube 04 to move upward, and then the third drive motor 7 continues to rotate to drive the detection test tube 04 at the next position to align with the detection slot 011, and the above steps are repeated to detect the water samples in each detection test tube 04 in turn.

[0074] Combination Fig.14As shown, after all water samples have been tested, the bracket 2 slides and translates to the upper side of the transfer box 1 to make room for the space above the loading and unloading port of the transfer box 1. Then, the electric push cylinder 91 extends to push the test tube tray 8 upward until the top of each test tube 04 extends above the transfer box 1, thereby facilitating the removal of the test tube 04 for subsequent processing.

[0075] The electric push cylinder 91 is involved in pushing the test tube tray 8 upward so that the guide nozzle 44 is inserted into the test tube 04 for accurate transfer of the water sample, and is also involved in lowering the test tube tray 8 until the bottom of the test tube 04 is inserted into the detection groove 011 for detection, and is also involved in pushing the test tube tray 8 upward so that the top of the test tube 04 extends above the transfer box 1, so as to facilitate the removal of the test tube 04 for processing. One component has multiple uses, which reduces the overall structural complexity of the device, and does not affect the layout of other components due to the excessive space occupied by the arrangement of multiple drive structures in the transfer box 1.

[0076] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A water microorganism detection device, characterized in that: The water body microorganism detection device comprises a biological detection chamber (01), a transfer box (1), a bracket (2), a mobile suspension seat (3) and a counterweight sampler (4); The counterweight sampler (4) is in a cylindrical structure, and a plurality of sample loading cavities (43) are arranged in an array around an axis, and each sample loading cavity (43) is used to collect a water sample at a target position separately; The top of the transfer box (1) is provided with a take-in and put-out opening for taking in and putting in the test tube (04); the water sample in each sample loading cavity (43) is transferred to the corresponding test tube (04) at the top of the transfer box (1); The biological detection chamber (01) is arranged on one side of the transfer box (1), and the detection slot (011) of the biological detection chamber (01) extends into the transfer box (1), and the detection test tube (04) containing the water sample extends into the detection slot (011) through the bottom for detection; The bracket (2) for positioning and placing the counterweight sampler (4) is slidably mounted on the top of the transfer box (1); The mobile suspension seat (3) is connected to a first winding rope (02) wound in a first winding and unwinding bin (021) on the side of the transfer box (1), and the counterweight sampler (4) is connected to a second winding rope (03) wound in a second winding and unwinding bin (031) at the bottom of the mobile suspension seat (3). The mobile suspension seat (3) is used to drive the counterweight sampler (4) to transfer in the water body.

2. A water body microorganism detection device according to claim 1, characterized in that: The counterweight sampler (4) is provided with a sampling mechanism (5) in each of the sample loading holes (43), and each of the sampling mechanisms (5) is used to draw a water sample at a target position into the corresponding sample loading hole (43), or to discharge the water sample in the corresponding sample loading hole (43) under pressure; A driving mechanism (6) is arranged on the top of the counterweight sampler (4), and the driving mechanism (6) is used to drive each sampling mechanism (5) to perform corresponding independent work; The counterweight sampler (4) is composed of a housing base (41) and a top cover (42), wherein the top cover (42) is detachably mounted on the top of the housing base (41) by means of a thread; The sample loading cavity (43) is arranged in the shell seat (41), and the top part thereof penetrates the top end surface of the shell seat (41); At the bottom of the housing seat (41) and at positions corresponding to the positions of the sample loading holes (43), flow guide nozzles (44) corresponding to and in communication with the sample loading holes (43) are provided, and a solenoid valve (441) is installed in each flow guide nozzle (44) near its bottom end.

3. A water body microorganism detection device according to claim 2, characterized in that: The sampling mechanism (5) comprises a piston (51), an arch frame (52), an adjusting threaded rod (53) and a guide rod (54); The piston (51) is correspondingly installed in the sample loading cavity (43) and is tightly slidably fitted with the inner wall of the sample loading cavity (43); The arch frame (52) is correspondingly mounted on the top of the piston (51), and a vertically penetrating threaded hole (521) is provided on the top of the arch frame (52). The adjusting threaded rod (53) is rotatably mounted on the top cover (42) and passes through the threaded hole (521) vertically downward in a threaded matching manner. The guide rod (54) is fixed to the top of each arch frame (52), and each guide rod (54) slides vertically upward to penetrate and extend to the top of the top cover (42).

4. A water body microorganism detection device according to claim 3, characterized in that: The driving mechanism (6) comprises a first driving motor (61), a swing arm (62), a second driving motor (63), a driving wheel disc (64), and driven wheel discs (65) whose number is equal to the number of the sample loading cavities (43); The first drive motor (61) is fixed on the top cover (42), and the swing arm (62) is fixed on the output shaft of the first drive motor (61) and can rotate around the axis of the housing seat (41); The second drive motor (63) is fixed on a side of the swing arm (62) away from the first drive motor (61), and the drive wheel (64) is fixed on an output shaft of the second drive motor (63); The top end of each adjusting threaded rod (53) extends to the top of the top cover (42) and is fixedly mounted with the driven wheel (65); The outer edge of the driving wheel disc (64) and the outer edge of each driven wheel disc (65) are in corresponding abutment with each other.

5. A water body microorganism detection device according to claim 4, characterized in that: The outer edge walls of the driving wheel disc (64) and each of the driven wheel discs (65) are fixedly covered with a rubber sleeve (66), and the outer edge walls of each of the rubber sleeves (66) are provided with vertically extending convex ridges in an annular array.

6. A water body microorganism detection device according to claim 2, characterized in that: Slide rails (201) are fixed on both sides of the top of the transfer box (1), and sliding seats (202) are installed on the two slide rails (201) in a limited sliding manner, and the bracket (2) is installed on the top of the two sliding seats (202); A placement groove (21) is provided above the bracket (2) for the bottom of the shell seat (41) to be matched and placed therein, and a positioning block (23) is provided in the placement groove (21) and can be matched and inserted into a positioning groove (411) at the bottom of the shell seat (41) to achieve the positioning and placement of the shell seat (41); Vertical through holes (22) are respectively provided on the inner bottom wall of the placement groove (21) at positions corresponding to the positions of the guide nozzles (44) to allow the guide nozzles (44) to pass through.

7. A water body microorganism detection device according to claim 6, characterized in that: A third drive motor (7) is fixed on the inner bottom wall of the transfer box (1); a test tube tray (8) is mounted on the output shaft of the third drive motor (7) through a vertically extending connecting arm (71); and a ring array of plug holes (81) are arranged on the test tube tray (8) so as to be aligned one by one with the perforations (22); the plug holes (81) are used for matching and inserting the test tubes (04); At least two support rods (82) extending vertically upward are fixed to the upper surface of the test tube tray (8) at the periphery of each of the insertion holes (81), and the tops of the support rods (82) are in contact with the top flanges of the test tubes (04).

8. The water body microorganism detection device according to claim 7, characterized in that: A fixing seat (9) is fixed on the inner wall of the transfer box (1), an electric push cylinder (91) is vertically fixed above the fixing seat (9), and a support plate (92) is installed on the end of the telescopic rod of the electric push cylinder (91) for supporting against the lower surface of the test tube tray (8); The connecting arm (71) is composed of a connecting rod (711) and a rectangular connecting rod (713); The connecting rod (711) is vertically fixed on the output shaft of the third driving motor (7), and a vertically extending directional cavity (712) is provided on the top of the connecting rod (711); The rectangular connecting rod (713) is matched and slidably inserted into the directional cavity (712), and the test tube tray (8) is fixed on the top end of the rectangular connecting rod (713).

9. A water body microorganism detection device according to claim 8, characterized in that: The support plate (92) is provided with a ball groove (921), and a rolling ball (922) abutting against the test tube tray (8) is embedded in the ball groove (921).

10. The water microorganism detection device according to claim 2, characterized in that: A first rubber ring (412) is fixed on the upper end surface of the housing seat (41) at the periphery of the top of each sample loading cavity (43) and is pressed and abutted against the inner end wall of the top cover (42); A second rubber ring (421) is fixed at the bottom end of the top cover (42) and is pressed and abutted against the surface of the shell seat (41).

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