Urinalysis instrument and control method thereof

Abstract

The invention discloses a urinalysis instrument and a control method thereof.The urinalysis instrument comprises a rotary cutting valve, a kit, a sampler, a detection component, a pump, a pipeline, a first valve and a second valve, the rotary cutting valve is provided with a public flow channel, a plurality of reagent flow channels, a sample flow channel, a detection flow channel, a transfer flow channel and an air flow channel, and one end of the transfer flow channel is communicated with the inner end of the public flow channel; and the other end can be switched along with the rotary cutting valve and is communicated with the reagent flow channel, the sample flow channel, the detection flow channel and the air flow channel. And the kit is provided with a plurality of reagent cavities communicated with the plurality of reagent runners. The sampler is provided with a sample collection cavity; the sample collection cavity is communicated with the outer end of the sample flow channel. The detection part is provided with a detector and a detection cavity, and the detection cavity is communicated with the detection flow channel. The pipeline comprises a first section and a second section, two ends of the first section are communicated with the public flow channel and an outlet of the pump, and two ends of the second section are communicated with an inlet of the pump and a clear water collecting cavity containing clear water. The first valve is connected with the first section. The second valve is connected with the second section.

Description

Technical Field

[0001] The present invention relates to the technical field of urine testing instruments, and in particular to a urine testing instrument and a control method thereof. Background Art

[0002] As human life expectancy increases, the importance of health care and maintenance has received more and more attention. Urine can reflect a person's health status to a certain extent. Quantitative analysis of urine components can help us understand diseases such as the pancreas and kidneys. Urinalysis is an important indicator for detecting a person's physical condition. It can usually detect pH, protein, occult blood, specific gravity, glucose, ketone bodies, urobilinogen, nitrates, white blood cells, bilirubin and vitamin C, reflecting a series of indicators of the body. Urine tests are usually conducted in hospitals. Due to the shortage of medical resources, the examinees often have to queue up to register, see a doctor, pay fees, collect urine, wait for batches of urine tests, and then queue up to get the results, which is time-consuming and laborious.

[0003] At present, there are urine testers for home use on the market that have functions such as flushing and urine collection. They usually have multiple pipes and complicated flushing processes. The toilet and the pipes inside the toilet are difficult to clean, which can easily cause contamination to the urine sample that needs to be tested. Summary of the invention

[0004] The object of the present invention is to provide a urine test instrument and a control method thereof to solve the problems of the prior art.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a urine test instrument, which comprises: A rotary cutting valve, wherein the rotary cutting valve is provided with a common flow channel, a plurality of reagent flow channels, a sample flow channel, a detection flow channel, a transfer flow channel and an air flow channel, wherein one end of the transfer flow channel is connected to the inner end of the common flow channel, and the other end can be switched with the rotary cutting valve and connected to the reagent flow channel, the sample flow channel, the detection flow channel or the air flow channel; A reagent kit, wherein the reagent kit is provided with a plurality of reagent chambers communicating with the plurality of reagent flow channels; A sampler, wherein the sampler is provided with a sample collection cavity, and the sample collection cavity is communicated with the outer end of the sample flow channel; A detection component, wherein the detection component is provided with a detector and a detection cavity, and the detection cavity is communicated with the detection flow channel; Pumps; A pipeline, the pipeline comprising a first section and a second section, two ends of the first section are connected to the common flow channel and the outlet of the pump, and two ends of the second section are connected to the inlet of the pump and a clean water collection chamber containing clean water; a first valve connected to the first section; A second valve is connected to the second section.

[0006] In one embodiment, the rotary cutting valve comprises: a flow channel plate, wherein the flow channel plate is provided with a central flow channel, a plurality of reagent holes, a sample hole, a detection hole, the common flow channel, a plurality of the reagent flow channels, the air flow channel, the sample flow channel and the detection flow channel, the plurality of the reagent holes are respectively connected with the plurality of the reagent flow channels, the sample hole is connected with the sample flow channel, and the detection hole is connected with the detection flow channel; and The rotor is rotatably connected to the flow channel plate and is provided with the transfer flow channel. The transfer flow channel can rotate with the rotor and communicate with a plurality of the reagent flow channels, the sample flow channels, the air flow channels or the detection flow channels.

[0007] In one embodiment, the urine testing instrument further comprises: a first sealing gasket, which is stacked on the bottom surface of the flow channel plate and is provided with a first central hole and a plurality of first sealing holes, wherein the first central hole is communicated with the central flow channel, and the plurality of first sealing holes are respectively aligned with and communicated with the sample hole, the detection hole, and the plurality of reagent holes; and A first support plate, wherein the first support plate is located between the first sealing gasket and the rotor and is provided with a second center hole and a plurality of first circumferential holes, wherein the second center hole is connected with the first center hole and the inner end of the transfer channel; and the plurality of first circumferential holes are respectively aligned with and connected with the plurality of first sealing holes.

[0008] In one embodiment, a plurality of reagent flow channels are provided on the top surface of the flow channel plate, the inner ends of the plurality of reagent flow channels are respectively connected to the plurality of reagent holes, and the outer ends diverge radially toward the outside; The plurality of reagent chambers are respectively communicated with the outer ends of the plurality of reagent flow channels.

[0009] In one embodiment, the urine testing instrument further comprises: A second sealing gasket, which is stacked on the top surface of the flow channel plate and is provided with a plurality of second sealing holes, wherein the plurality of second sealing holes are respectively aligned with and communicated with the outer ends of the plurality of reagent flow channels; and A second support plate, the second support plate is located on the top surface of the plurality of second sealing pads and is provided with a plurality of second circumferential holes, the plurality of second circumferential holes are respectively aligned with and communicated with the plurality of second sealing holes; The plurality of reagent chambers are respectively communicated with the plurality of second circumferential holes.

[0010] In one embodiment, a plurality of threaded holes are further provided on the top surface of the second support plate, and the plurality of threaded holes are respectively connected to the plurality of second circumferential holes; The rotary cutting valve also includes a plurality of pins, the bottom ends of which are respectively located in the plurality of threaded holes and threadedly connected to the second support plate, the bottom ends of which are respectively connected to the plurality of second circumferential holes, and the top ends are provided with needle tips.

[0011] In one embodiment, the urine testing instrument further comprises: A connecting plate, the connecting plate is located on the top surface of the second supporting plate and is provided with avoidance holes for avoiding the plurality of the pins; and A third sealing gasket is located on the top surface of the connecting plate and on the bottom surface of the reagent kit. The third sealing gasket is provided with a plurality of third sealing holes, and the plurality of third sealing holes are interference-fitted with the plurality of pins.

[0012] The present invention also relates to a control method of a urine tester, which is applied to the above-mentioned urine tester and comprises the steps of: S1: Switch the rotary cutting valve to the sample flow channel, open the first valve, and use the pump to draw the sample into the transfer flow channel. Then switch the rotary cutting valve to the detection flow channel, and use the pump to push the sample in the transfer flow channel into the detection flow channel. S2: close the first valve, open the second valve, and the pump pumps clean water into the second section; then open the first valve, close the second valve, and the pump pumps clean water in the second section into the common flow channel and the transfer flow channel; S3 the pump pushes the clean water in the transfer channel into the detection channel, pushes the water and sample in the detection channel into the detection cavity, and discharges them from the detection cavity; S4: repeating step S2, the pump pumps the water in the second section into the detection channel, and the water flows from the detection channel into the detection cavity, the detector detects the clean water in the detection cavity, and uses the detection result as a reference value; S5: switching the rotary cutting valve to the air flow channel, drawing external air into the transfer flow channel, and then switching the rotary cutting valve to the sample flow channel, and the pump draws the sample in the sample flow channel into the transfer flow channel; S6: Switching the rotary cutting valve to the reagent flow channel, and the pump draws the reagent in the reagent chamber into the transfer flow channel; S7: Switching the rotary cutting valve to the detection channel, the pump pushes the sample and reagent in the transfer channel into the detection channel, and then pushes them into the detection cavity from the detection channel; S8: the detector detects the sample in the detection chamber; S9: repeating step S2, the pump pushes the clean water in the common flow channel into the detection flow channel, and the clean water flows from the detection flow channel into the detection cavity and then is discharged, so as to clean the detection cavity; S10: Switch the rotary cutting valve to the sample flow channel, and then repeat step S2, the pump pushes the clean water in the common flow channel into the sample flow channel, and the water flows from the sample flow channel into the sample collection cavity and then is discharged.

[0013] In one embodiment, before step S5, it is also necessary to determine whether the sample needs to be diluted. If dilution is not required, step S5 is performed; If dilution is required, in step S5, after the pump pushes the water in the common flow channel into the detection flow channel, the rotary cut valve is switched to the air flow channel, and external air is drawn into the transfer flow channel to isolate the water in the detection flow channel from the water in the common flow channel. The rotary cut valve is then switched to the detection flow channel, and the pump quantitatively sucks the water in the detection flow channel into the transfer flow channel. The rotary cut valve is then switched to the sample flow channel, and the pump draws the sample in the sample flow channel into the transfer flow channel and mixes it with the water in the transfer flow channel to form a diluted sample. The rotary cutting valve switches to the air flow channel again, and inhales external air to isolate the diluted sample in the transfer flow channel from the water in the detection flow channel.

[0014] In one embodiment, if dilution is required, then in step S5, the rotary cutting valve is switched to the air flow channel again, and after the external air is inhaled to isolate the diluted sample in the transfer flow channel from the water in the detection flow channel, it is also necessary to determine whether all the diluted samples need to be tested; If all the diluted samples are needed, the rotary cutting valve is switched to the detection channel, and the pump pushes the diluted samples into the detection channel; The rotary cutting valve is switched to the air flow channel, and the pump sucks a certain amount of air into the transfer flow channel. Then the rotary cutting valve is switched to the detection flow channel, and the pump sucks all the diluted samples of the detection flow channel into the transfer flow channel again. If only a portion of the diluted sample is needed, the rotary cutting valve is switched to the detection channel, and the pump pushes the diluted sample into the detection channel; The rotary cutting valve is switched to the air flow channel, and the pump will suck a certain amount of air into the transfer flow channel. The rotary cutting valve is then switched to the detection flow channel, and the pump quantitatively extracts the diluted sample from the detection flow channel into the transfer flow channel. The rotary cutting valve is then switched to the air flow channel, and quantitatively extracts air into the transfer flow channel. The rotary cutting valve is then switched to the detection flow channel again, and the absorbed air is pushed into the detection flow channel, thereby isolating the diluted sample from the detection flow channel from the diluted sample from the transfer flow channel.

[0015] In one embodiment, the detection component further comprises: a first mixing bend, wherein two ends of the first mixing bend are respectively connected to the detection flow channel and one end of the detection cavity; and a second mixing bend, one end of the second mixing bend being connected to the other end of the detection cavity; Among them, in S7, the rotary cutting valve is switched to the detection channel, and the pump pushes the sample and reagent in the transfer channel into the detection channel, and pushes them from the detection channel from the first mixing bend into the detection cavity, and then the pump drives the sample and reagent in the detection cavity to circulate in the first mixing bend, the detection cavity and the second mixing bend, and finally flows into the detection cavity.

[0016] In one embodiment, in S7, the rotary cutting valve is switched to the detection channel, and the pump pushes the sample and reagent in the transfer channel into the detection channel, and flows from the detection channel into the second mixing bend through the first mixing bend and the detection chamber in sequence, and then stays for 1s-2s, and then the sample and reagent in the second mixing bend are drawn into the detection chamber and the first mixing bend, and after multiple cycles, finally flow into the detection chamber.

[0017] In one embodiment, before step S6, it is necessary to determine whether to extract multiple reagents. If only one reagent needs to be extracted, step S6 is performed; If multiple reagents need to be extracted, after step S6, the rotary cutting valve needs to be switched to the detection channel to push the reagents in the transfer channel into the detection channel to mix and react with the samples in the detection channel; After waiting for a preset time, the rotary cutting valve is switched to another reagent flow channel, and the pump draws the reagent in another corresponding reagent chamber into the transfer flow channel, and then the rotary cutting valve is switched to the detection flow channel again, and the reagent is pushed into the detection flow channel again.

[0018] In one embodiment, the urine test instrument further includes a first sensor and a second sensor, wherein the first sensor is located in the sample collection chamber, and the second sensor is located in the clean water collection chamber; Before step S1, it is also necessary to determine the sample liquid level according to the first sensor and the clean water liquid level according to the second sensor. If both the sample liquid level and the clean water liquid level meet the requirements, step S1 is performed; if one of the sample liquid level and the clean water liquid level does not meet the requirements, the process ends.

[0019] In one embodiment, the urine test instrument further includes a control module, which is connected to the pump, the first sensor, the second sensor, the detector and the rotary cutting valve, and is used for the operation of the pump, the detector and the rotary cutting valve, and receives information from the first sensor, the second sensor and the detector; Before step S1, the first sensor transmits the detected sample liquid level information to the control module, and the second sensor transmits the detected clean water liquid level information to the control module. If the control module determines that the sample liquid level and the clean water liquid level information meet the requirements, step S1 is performed. If one of the sample liquid level and the clean water liquid level does not meet the requirements, the process ends; After step S10, the control module determines that the detection result is abnormal, and restarts steps S1 to S10; if the detection result is normal, the next detection item is performed.

[0020] In one embodiment, the urine test instrument further includes a warning light, and the warning light is connected to the control module; After step S10, the control module determines that two consecutive detection results are abnormal, and then controls the warning light to send out a warning signal.

[0021] In one embodiment, the rotary cutting valve is further provided with a washing flow channel; The urine test instrument also includes a washing liquid and a washing chamber containing the washing liquid; After the steps S1 to S10 are cycled for a preset number of times, it is necessary to determine whether the reagent kit needs to be replaced. If the reagent kit needs to be replaced, the following steps are performed: S01: close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and switch the rotary valve to the detection flow channel. The pump pumps clean water in the second section into the common flow channel, the transfer flow channel, and the detection flow channel. S02: switching the rotary cutting valve to the washing channel, and the pump pumping the washing liquid into the transfer channel; S03: the rotary cutting valve is switched to the detection channel, the pump pushes the washing liquid in the transfer channel into the detection channel to mix with clean water to dilute it into a diluted washing liquid, and then the diluted washing liquid is pumped into the transfer channel; S04: switching the rotary cutting valve to multiple reagent flow channels in sequence, and after each switching, the pump pushes the dilution washing solution in the transfer flow channel into the reagent flow channel and into the reagent chamber; S05: the rotary cutting valve is switched to the plurality of reagent flow channels again, and the pump pushes the clean water in the common flow channel into the reagent flow channels and into the reagent chamber in sequence; S06: Replace the reagent kit.

[0022] In one embodiment, the rotary cutting valve is further provided with a washing flow channel; The urine testing instrument also includes a washing liquid and a washing chamber containing the washing liquid; After the steps S1 to S10 are cycled for a preset number of times, regular maintenance is required. The control method further includes the steps of: S001: close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and switch the rotary valve to the detection flow channel. The pump pumps clean water in the second section into the common flow channel, the transfer flow channel, and the detection flow channel. S002: Switch the rotary cutting valve to the washing channel, and the pump draws the washing liquid into the transfer channel; S003: Switch the rotary cutting valve to the detection flow channel, and the pump pushes the washing liquid in the transfer flow channel into the detection flow channel to mix with clean water to dilute it into diluted washing liquid; S004: Switch the rotary cutting valve to the sample flow channel, and the pump pushes the dilution washing solution in the transfer flow channel into the sample flow channel and the sample collection chamber; S005: repeating steps S001 to S003, the pump pushes the diluted washing liquid in the detection channel into the detection cavity; S006: After waiting for a preset time, the rotary cutting valve is switched to the sample flow channel, and the first valve is closed, the second valve is opened, and the pump pumps clean water into the second section, and then the first valve is opened, the second valve is closed, and the pump pumps the clean water in the second section into the common flow channel, the transfer flow channel and the sample flow channel, and then flows into the sample collection chamber, and the diluted washing liquid in the sample collection chamber is discharged together; S007: Switch the rotary cutting valve to the detection flow channel, close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and the pump pumps the clean water in the second section into the common flow channel, the transfer flow channel and the detection flow channel, and finally flows into the detection chamber to discharge the diluted washing liquid in the detection chamber.

[0023] The urine testing instrument of the present invention realizes functions such as flushing and urine collection, and can thoroughly clean the internal pipelines to reduce pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a stereoscopic diagram of a urine testing instrument according to an embodiment of the present invention.

[0025] Figure 2 yes Figure 1 An exploded view of the urine testing instrument in the illustrated embodiment.

[0026] Figure 3 yes Figure 1 Assembly diagram of the embodiment shown with the housing removed.

[0027] Figure 4 , Figure 5 and Figure 6 They are Figure 1 An exploded view of the embodiment shown in FIG. 1 after removing the housing, two three-way valves, the circuit board and the detection board.

[0028] Figure 7 , Figure 8 and Fig. 9 They are Figure 1 A three-dimensional view of the flow channel plate in the illustrated embodiment.

[0029] Fig.10 yes Fig. 9 A cross-sectional view of the flow channel plate along line AA in the illustrated embodiment.

[0030] Fig.11 yes Fig. 9 A cross-sectional view of the flow channel plate along line BB in the illustrated embodiment.

[0031] Fig.12 and Fig.13 They are Figure 1 A perspective view of the first sealing gasket in the illustrated embodiment.

[0032] Fig.14 and Fig.15 They are Figure 1 A perspective view of the second sealing gasket in the illustrated embodiment.

[0033] Fig.16 yes Figure 1 An exploded view of the embodiment shown in FIG. 1 after removing the housing, two three-way valves, the circuit board and the detection board.

[0034] Fig.17 yes Figure 1 Exploded view of the reagent cartridge, mounting base and pull ring in the illustrated embodiment.

[0035] Fig.18 It is a three-dimensional diagram of a detection board according to an embodiment of the present invention.

[0036] Fig.19 yes Fig.18 A perspective view of a detection plate of the illustrated embodiment.

[0037] Fig. 20 yes Fig.19 A cross-sectional view of the detection plate along line CC in the illustrated embodiment.

[0038] Fig.21 and Fig. 22 It is an exploded view of a reagent kit and a rotary cutting valve according to another embodiment of the present invention.

[0039] Fig.23 yes Fig.21 An exploded view of the reagent box and the leakage prevention part in the embodiment shown.

[0040] Fig.24 yes Fig.21 A perspective view of the second sealing gasket in the illustrated embodiment.

[0041] Fig.25 yes Fig.21 A three-dimensional view of the flow channel plate in the illustrated embodiment.

[0042] Fig.26 yes Fig.21 An assembly diagram of the second support plate, the metal ring and the pins in the illustrated embodiment.

[0043] Fig. 27 It is a flow chart of a control method of a urine testing instrument according to an embodiment of the present invention.

[0044] Fig.28 The present invention is a working fluid circuit diagram of a urine testing instrument according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0046] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, ie, should be interpreted as "including, but not limited to."

[0047] The following will be described in detail with reference to the accompanying drawings to provide a clearer understanding of the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0048] References throughout the specification to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0049] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0050] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0051] The present invention relates to a toilet and a urine tester 100 thereof, wherein the urine tester 100 comprises a bracket 9, a rotary cutting valve, a reagent kit 2, a sampler, a detection component 3, a pump 6, two three-way valves, a plurality of pipelines, a control module and a housing 8, wherein the reagent kit 2, the detection component 3, the pump 6, the two three-way valves, a plurality of pipelines and the control module are located in the housing 8. The rotary cutting valve comprises a microfluidic chip, a rotor 4 and a driving member 5, and the microfluidic chip comprises a flow channel plate 1, a second sealing pad 44 and a second support plate 45.

[0052] The housing 8 can be installed in a water tank of a toilet, which is generally a smart toilet. A storage box is divided in the water tank of the smart toilet, and the storage box can be used to store various electrical components. Of course, in other embodiments, the urine tester 100 of the present invention can also be adapted to an ordinary toilet, and can also be set outside the water tank, and the specific installation position of the urine tester 100 is not limited.

[0053] The sampler (not shown) is located on the inner wall of the toilet and is provided with a sample collection cavity for collecting samples. A sensor is generally provided in the sample collection cavity for sensing whether a sample is collected in the collection cavity. The sensor may be an infrared sensor or other liquid level sensor, etc., and the specific type of the sensor is not limited.

[0054] The urine testing instrument of the present invention also comprises a water storage container for storing clean water. The water storage container is provided with a clean water collecting chamber for collecting clean water. A sensor for sensing liquid level is also provided in the clean water collecting chamber.

[0055] The reagent box 2 is used to hold a variety of reagents, and the microfluidic chip is used to receive samples and reagents. The rotary cutting valve cooperates with the pump 6 to push the samples and reagents into the detection chamber 32 of the detection component 3. The detection component 3 includes a detector and a detection plate 31, wherein the detection plate 31 is made of a transparent material and is provided with a detection chamber 32, and the detection chamber 32 is used to receive the samples and reagents in the microfluidic chip. The detector is used to detect the samples in the detection plate 31. The control module is used to control the operation of the driving member 5 and the pump 6, and can also receive information from the sensors in the detection component 3 and the sample collection chamber or the clean water collection chamber.

[0056] In a specific embodiment, Figure 7-9 As shown, the flow channel plate 1 is in the shape of a pancake formed around a vertical axis and is provided with a central flow channel 11, a plurality of reagent wells 12, a sample well 14, a detection well 13, a common flow channel 111, a sample flow channel 141 and a detection flow channel 131, wherein the central flow channel 11 is located at the center of the flow channel plate 1 and is formed by the bottom surface of the flow channel plate 1 being recessed toward the top by a preset depth, and the central flow channel 11 extends in the vertical direction and does not penetrate the flow channel plate 1.

[0057] The plurality of reagent holes 12 are arranged at intervals along a circle formed with the central flow channel 11 as the center and penetrate the flow channel plate 1, that is, each reagent hole 12 is at the same distance from the central flow channel 11. As a preferred embodiment, the plurality of reagent holes 12 are evenly spaced around the vertical axis. The top end of each reagent hole 12 is used to receive the reagent in the reagent box 2, and the bottom end is used for the reagent to flow into the common flow channel 111.

[0058] The sample hole 14 is formed by a depression at the bottom end of the flow channel plate 1 and is also located on the above-mentioned circumference, that is, the distance between the sample hole 14 and the central flow channel 11 is the same as the distance between any reagent hole 12 and the central flow channel 11, and is open toward the bottom surface of the flow channel plate 1.

[0059] The detection hole 13 is also formed by the bottom depression of the flow channel plate 1 and is also located on the above-mentioned circumference, that is, the distance between the detection hole 13 and the central flow channel 11 is the same as the distance between the sample hole 14 or the reagent hole 12 and the central flow channel 11, and is also open to the bottom surface of the flow channel plate 1.

[0060] The inner end of the sample flow channel 141 is connected to the sample hole 14, and the outer end extends radially to the radial outer side of the flow channel plate 1. The sample flow channel 141 is a flow channel extending radially along the flow channel plate 1 and is located inside the flow channel plate 1. The outer end of the sample flow channel is connected to the sample collection chamber through a pipeline.

[0061] The detection flow channel 131 is the same as the sample flow channel 141, and is also a flow channel extending in the radial direction of the flow channel plate 1, with its inner end communicating with the detection hole 13, and its outer end extending radially to the radial outer side of the flow channel plate 1, and the outer end opening of the detection flow channel 131 is adjacent to the outer end opening of the sample flow channel 141. A pipeline of the detection flow channel is connected to the detection cavity.

[0062] The common flow channel 111 is also a flow channel extending in the radial direction of the flow channel plate 1, but its inner end is connected to the central flow channel 11, and its outer end is also located radially outside the flow channel plate 1. The outer end of the common flow channel 111 is located above the detection flow channel 131 and the sample flow channel 141. The outer end of the common flow channel 111 is connected to the pump 6 through a pipe. After the pump 6 is started, the air in the common flow channel 111 can be pumped out to form a negative pressure state, so as to draw the reagent and the sample into the common flow channel 111. The pump 6 can also pump air into the common flow channel 111 and drive the reagent or sample in the common flow channel 111 to flow into the detection chamber 32 through the air.

[0063] The rotor 4 is connected to the driving member 5, such as Figure 5 As shown, the driving member 5 is a motor, which is mounted on a bracket 9 .

[0064] The bracket 9 is installed in the housing 8 and has an annular mounting ring 91 at the top. The output shaft of the motor extends in the vertical direction and has its top located in the mounting ring 91 .

[0065] The rotor 4 is connected to the output shaft of the motor and is also located in the mounting ring 91, while the flow channel plate 1 is located on the top surface of the rotor 4 and is fixedly connected to the mounting ring 91 by screws. When the motor is started, the rotor can be driven to rotate relative to the flow channel plate 1.

[0066] The rotor 4 is located on the bottom surface of the flow channel plate 1 and is provided with a transfer flow channel 41. The rotor 4 and the flow channel plate 1 are concentrically arranged, and the inner end 411 of the transfer flow channel 41 is located at the center of the rotor 4 and is open toward the top surface of the rotor 4. The inner end 411 of the transfer flow channel 41 is aligned with and connected to the bottom end of the central flow channel 11. The outer end 412 of the transfer flow channel 41 is also open toward the top surface of the rotor 4, and the projection of its outer end in the vertical direction is located on the projection of the circumference of the plurality of reagent wells 12 in the vertical direction. That is, as the rotor 4 rotates, the outer end 412 of the transfer flow channel 41 can be aligned with and connected to the bottom end of any reagent well 12, sample well 14 or detection well 13.

[0067] exist Figure 5In the illustrated embodiment, the transfer flow channel 41 is formed by a depression in the top surface of the rotor 4. It should be understood that in other embodiments, the transfer flow channel 41 may also be a flow channel located inside the rotor 4, with the outer end 412 and the inner end 411 both being arranged to be open toward the top surface of the rotor 4, the inner end 411 being connected to the central flow channel 11, and the outer end 412 being used to be connected to the reagent hole 12, the sample hole 14 or the detection hole 13. The present invention does not limit the specific implementation manner of the transfer flow channel 41.

[0068] The inner end 411 of the transfer channel 41 is connected to the central channel 11 and the common channel 111, and when the outer end 412 of the transfer channel 41 is aligned with the reagent hole 12, the common channel 111, the reagent hole 12 and the reagent chamber 21 are connected, and the pump 6 can extract the air in the common channel 111 and the reagent hole 12 to form a negative pressure, so as to draw the reagent in the reagent chamber 21 into the common channel 111. Of course, when the outer end 412 of the transfer channel 41 is aligned with the sample hole 14, the sample in the sample collection chamber can also be drawn into the common channel 111 in the same way.

[0069] In order to increase the sealing performance between the rotor 4 and the flow channel plate 1, a first sealing gasket 42 and a first supporting plate 43 are further provided between the rotor 4 and the flow channel plate 1. Figure 5 , Figure 6 , Fig.12 and Fig.13 As shown, the first sealing gasket 42 is stacked on the bottom surface of the flow channel plate 1 and is provided with a first center hole 421 and a plurality of first sealing holes 422. The first center hole 421 is a channel penetrating the first sealing gasket 42 and the top end is aligned with and connected to the center flow channel 11, and the plurality of first sealing holes 422 are also through holes and are respectively aligned with and connected to the sample hole 14, the detection hole 13 and the plurality of reagent holes 12.

[0070] The first support plate 43 is located between the first sealing gasket 42 and the rotor 4 and is provided with a second central hole 431 and a plurality of first circumferential holes 432. The second central hole 431 is a through hole penetrating the first support plate 43, and the top end is connected to the first central hole 421, and the bottom end is connected to the inner end of the transfer channel 41 of the rotor 4. The plurality of first circumferential holes 432 are also through holes and are aligned and connected to the plurality of first sealing holes 422 one by one.

[0071] The inner end 411 of the transfer channel 41 is connected to the common channel 111 through the first center hole 421 and the second center hole 431 , and the outer end 412 is connected to multiple reagent holes 12 , detection holes 13 or sample holes 14 through multiple first circumferential holes 432 and multiple first sealing holes 422 .

[0072] In addition, in order to increase the sealing effect, the bottom surface of the first sealing pad 42 is provided with a plurality of first bottom sealing rings 424, and the top surface is provided with a plurality of first top sealing rings 423. The plurality of first bottom sealing rings 424 and the plurality of first top sealing rings 423 are respectively arranged around the first center hole 421 and the plurality of first sealing holes 422, that is, one of the first bottom sealing rings 424 and one of the first top sealing rings 423 are arranged around the first center hole 421, and the remaining first top sealing rings 423 and the first bottom sealing rings 424 are all arranged around the first sealing hole 422. The first top sealing ring 423 and the first bottom sealing ring 424 have the same shape and size, and their projections in the vertical direction also overlap. After the rotor 4 and the flow channel plate 1 are fixed, the plurality of first top sealing rings 423 and the plurality of first bottom sealing rings 424 are squeezed by the rotor 4 and the flow channel plate 1, so as to increase the sealing effect between the rotor 4 and the flow channel plate 1 and prevent the sample or reagent from overflowing from between the first center hole 421 and the first sealing hole 422.

[0073] Of course, in other embodiments, the first top sealing ring 423 or the first bottom sealing ring 424 may be provided separately as long as the sealing effect can be ensured.

[0074] As a preferred solution, the bottom surface of the flow channel plate 1 is provided with a cylindrical receiving groove 15, such as Figure 8 As shown, the depth of the receiving groove 15 is just enough to accommodate the first sealing gasket 42 and the first supporting plate 43 , and the first supporting plate 43 and the first sealing gasket 42 are fixedly connected to the top wall of the receiving groove 15 by screws.

[0075] Furthermore, the side wall of the receiving groove 15 is further provided with a limiting groove 16 which is recessed toward the radial outside. Figure 6 and Figure 8 In the embodiment shown, there are four limit grooves 16, and the four limit grooves 16 are arranged at intervals. Four limit blocks located in the limit grooves 16 are respectively arranged on the radial outer sides of the first sealing gasket 42 and the first support plate 43, so as to limit the first support plate 43 and the first sealing gasket 42 from being driven by the rotor 4 to rotate.

[0076] The top surface of flow channel plate 1 is provided with multiple reagent flow channels 121, and the inner ends of multiple reagent flow channels 121 are respectively communicated with multiple reagent holes 12, and the outer ends diverge radially toward the outside. The outer end of reagent flow channel 121 is used to be communicated with reagent chamber 21, and the outer end of reagent flow channel 121 diverges radially toward the outside of flow channel plate 1, so that the outer ends of two adjacent reagent flow channels 121 are spaced apart from each other and increase, which is convenient to increase the radial dimension of each reagent chamber 21 and increase the reagent storage capacity. It should be understood that in other embodiments, one end of all reagent flow channels 121 needs to be on a circumference, communicated with reagent hole 12, and the other end can be located inside the circumference, or it can be arranged to diverge toward the outside of the circumference, or, in some embodiments, the top of reagent hole 12 is directly communicated with reagent chamber 21, and reagent flow channel 121 does not need to be arranged.

[0077] A second sealing gasket 44 is also stacked on the top surface of the flow channel plate 1. Figure 5 , Figure 6 , Fig.14 and Fig.15 As shown, the second support plate 45 is installed on the top surface of the second sealing gasket 44, and the second support plate 45 and the second sealing gasket 44 are both fixedly connected to the flow channel plate 1. Fig.14 and 15 In the illustrated embodiment, the second sealing gasket 44 and the second supporting plate 45 are fixed to the flow channel plate 1 by a plurality of screws.

[0078] The second sealing gasket 44 is located between the flow channel plate 1 and the second support plate 45 and is provided with a plurality of second sealing holes 441 . The plurality of second sealing holes 441 penetrate through the second sealing gasket 44 and are respectively aligned with and communicated with the outer ends of the plurality of reagent flow channels 121 .

[0079] The second support plate 45 is provided with a plurality of second circumferential holes 451 . The plurality of second circumferential holes 451 respectively penetrate the second support plate 45 and are respectively aligned with and communicated with the plurality of second sealing holes 441 .

[0080] The bottom surface of the second sealing pad 44 is provided with a plurality of second bottom sealing rings 443, and the top surface is provided with a plurality of second top sealing rings 442, wherein the second bottom sealing rings 443 and the second top sealing rings 442 are respectively annular and extend in the radial direction, and are respectively arranged around the second sealing hole 441. The plurality of second bottom sealing rings 443 and the plurality of second top sealing rings 442 have the same shape, and the projections of the plurality of second bottom sealing rings 443 and the plurality of second top sealing rings 442 in the vertical direction are respectively located outside the projections of the plurality of reagent flow channels 121 in the vertical direction, that is, the second bottom sealing rings 443 and the second top sealing rings 442 are used to prevent liquid from overflowing from the reagent flow channel 121.

[0081] In addition, in order to prevent the reagent from flowing radially in the second top sealing ring 442, a plurality of sealing rings 444 are further provided on the top surface of the second sealing gasket 44. The plurality of sealing rings 444 are respectively annular and extend around the plurality of second sealing holes 441, and the plurality of sealing rings 444 are located in the plurality of second top sealing rings 442. Each sealing ring 444 is divided into two parts along the circumferential direction, which are defined as an outer periphery and an inner periphery. The outer periphery is the part of the sealing ring 444 away from the center of the flow channel plate 1, and the inner periphery is the part close to the center. The outer periphery of each sealing ring 444 overlaps with the radial outer side of the second top sealing ring 442, and the inner periphery is located in the second top sealing ring 442.

[0082] The second sealing ring 444 is relatively small in shape to prevent the reagent from flowing radially in the second top sealing ring 442 .

[0083] The top surface of the second support plate 45 is also provided with a plurality of threaded holes 452, which are respectively connected to the plurality of second circumferential holes 451. A pin 46 is installed in each threaded hole 452, and the bottom end of the pin 46 is provided with a thread, which can be threadedly connected with the threaded hole 452. The top end is provided with a needle tip, which can be inserted into each reagent chamber 21.

[0084] The needle tip of each insertion needle 46 can be inserted into each reagent chamber 21 , with its top end communicating with the reagent chamber 21 , and its bottom end communicating with the outer end of the reagent flow channel 121 through the second circumferential hole 451 and the second sealing hole 441 .

[0085] The first sealing gasket and the second sealing gasket are both made of silicone or rubber, the second support plate 45 is made of plastic, and the flow channel plate 1 is made of stainless steel. In order to increase the sealing effect of the second sealing gasket and enhance the pressing force between the second support plate 45 and the flow channel plate 1, as a preferred solution, a concave ring 453 is provided on the top surface of the second support plate 45, and the concave ring 453 extends along the circumference of the second support plate 45 and is located at the edge of the second support plate 45. A metal ring 454 is installed in the concave ring 453, and the metal ring 454 is preferably made of stainless steel. The metal ring 454, the second support plate 45, and the second sealing gasket are fixed to the flow channel plate 1 by a plurality of screws. The metal ring 454 has a high hardness and can enhance the squeezing force on the second sealing gasket 44.

[0086] The plurality of pins 46 can be directly inserted into each reagent cavity 21 of the reagent box 2. However, as a preferred solution, a connecting plate 47 and another sealing gasket are provided between the second support plate 45 and the reagent box 2. The sealing gasket cooperates with the connecting plate 47 to increase the sealing performance between the second support plate 45 and the reagent box 2. The sealing gasket is defined as a third sealing gasket 48.

[0087] Specifically, the connecting plate 47 is annular and is provided with a plurality of avoidance holes 471, which are through holes penetrating the connecting plate 47. The plurality of pins 46 respectively pass through the plurality of avoidance holes 471 and are then inserted into the plurality of reagent chambers 21.

[0088] The third sealing pad 48 is also annular and has a plurality of third sealing holes 481. After the tops of the plurality of insertion pins 46 penetrate through the plurality of avoidance holes 471 and the plurality of third sealing holes 481, the needle tips thereof are respectively inserted into the plurality of reagent chambers 21. The tops of the plurality of insertion pins 46 and the plurality of third sealing holes 481 are interference-fitted to prevent the reagent in the reagent chamber 21 from leaking out from the insertion pins 46.

[0089] The inner diameter of the third sealing gasket 48 is larger than the inner diameter of the connecting plate 47 . The connecting plate 47 is connected to the bottom end of the reagent box 2 through a plurality of screws near the center, and squeezes the third sealing gasket 48 .

[0090] The connecting plate 47 , the third sealing gasket 48 and the reagent box 2 are fixedly assembled and can be removed from the housing 8 together.

[0091] The reagent kit 2 is cylindrical and is located on the top surface of the third sealing pad 48. The reagent kit 2 is provided with a plurality of reagent chambers 21 extending in the vertical direction, and the bottom end of the reagent chamber 21 is opened, and the needle tip of the insertion needle 46 can be inserted into the reagent chamber 21 from the opening.

[0092] The top wall of the housing 8 is provided with a circular mounting hole 81. Figure 2 As shown, after the reagent kit 2, connecting plate 47 and third sealing gasket 48 are assembled, they can be installed into the housing 8 through the mounting hole 81, and the needle tips of multiple pins 46 are inserted into multiple reagent chambers 21 through the avoidance hole 471 of the mounting plate and the third sealing hole 481 of the third sealing gasket 48.

[0093] A micro switch having a contact is also provided at the radial outer edge of the second support plate 45. The connecting plate 47 is also provided with a trigger block 24, such as Figure 4 As shown, the trigger block 24 is aligned with the contact point in the vertical direction. After the reagent box 2 and the connecting plate 47 are installed in the housing 8, the trigger block 24 on the connecting plate 47 will trigger the contact point. In other words, after the reagent box 2 is installed in place, the micro switch will be turned on.

[0094] The micro switch is signal-connected or electrically connected to the control module. When the contact of the micro switch is touched, a signal indicating that the reagent kit 2 is in place is transmitted to the control module.

[0095] The inner wall of the mounting hole 81 is also provided with a guide groove 82, which is formed by the inner wall depression of the mounting hole 81. The radial outer side of the reagent box 2 is also provided with a positioning member 23 located in the guide groove 82, which is a long column and extends in the vertical direction of the reagent box 2.

[0096] When the reagent box 2 is installed, the positioning member 23 is matched with the guide groove 82 to facilitate the positioning and installation of the reagent box 2.

[0097] A pull ring 27 is provided at the top of the reagent box 2. Figure 1 , Fig.17 As shown, the pull ring 27 is annular and rotatably connected to the top of the reagent box 2. The pull ring 27 facilitates the reagent box 2 to be removed from the plurality of pins 46.

[0098] exist Fig.17 In the specific embodiment shown, a recessed installation groove 25 is provided on the top surface of the reagent box 2. The installation groove 25 may be a through groove extending in the vertical direction, or may be recessed in the vertical direction to a preset depth.

[0099] The mounting seat 22 is installed in the mounting groove 25. The mounting seat 22 is connected to the inner wall of the mounting groove 25 and is provided with a rotating shaft 26. The rotating shaft 26 is rotatably connected to the mounting seat 22. The pull ring 27 is annular and its two ends are respectively connected to the two ends of the rotating shaft 26. Of course, in other embodiments, the rotating shaft 26 can also be fixedly connected to the inner wall of the mounting groove 25, and the two ends of the pull ring 27 are respectively rotatably connected to the two ends of the rotating shaft 26.

[0100] Each reagent chamber of the reagent kit of the present invention is connected to the reagent flow channel of the rotary cutting valve. Through the rotation of a rotor, not only can a variety of reagents be driven into the flow channel plate, but also samples and clean water can be driven into the flow channel plate, which can not only complete the entire detection process, but also thoroughly clean the internal pipelines to improve the accuracy of the test. In addition, the reagent kit can hold more reagents, has a long use time, a large number of times, and requires less resources for detection. After the reagents in the reagent kit are used up, the reagent kit can be directly removed and replaced, and the operation method of replacing the reagent kit is simple.

[0101] The urine testing instrument 100 also includes a control module, which is connected to the micro switch, the driving member 5, the pump 6 and the detection component 3, and is used to receive signals from the micro switch and the detection component 3, and can also be used to control the operation of the driving member 5, the pump 6 and the detection component 3.

[0102] In one embodiment, the pump 6 is connected to the common flow channel 111 through three pipes, namely the first pipe, the second pipe and the third pipe, and two three-way valves are arranged between the three pipes, namely the water inlet three-way valve 71 and the air inlet three-way valve 72.

[0103] One end of the first pipeline is communicated with the common flow channel 111 , and one end of the third pipeline is connected to the plunger pump 6 .

[0104] The water inlet three-way valve 71 is connected to the other end of the first pipe, one end of the second pipe and the water inlet pipe respectively. The water inlet pipe is used to receive water in the water tank to facilitate cleaning of the flow channel and the detection cavity 32 in the flow channel plate 1.

[0105] The intake three-way valve 72 is connected to the other end of the second pipeline, the other end of the third pipeline and the intake pipeline respectively. The intake pipeline is used for exhaust or intake.

[0106] When it is necessary to extract a sample, the motor drives the rotor 4 to rotate so that the outer end of the transfer channel 41 is aligned with the sample hole 14, so that the common channel 111, the transfer channel 41 and the sample channel 141 are connected.

[0107] The air inlet three-way valve 72 and the water inlet three-way valve 71 are opened at the same time, so that the first pipeline, the second pipeline, and the third pipeline are connected. At this time, the first pipeline, the second pipeline, the third pipeline, the common flow channel 111, the transfer flow channel 41, and the sample flow channel 141 are connected. The pump 6 extracts the air in the common flow channel 111, the transfer flow channel 41, and the sample flow channel 141, and the common flow channel 111 and the sample flow channel 141 form a negative pressure, and the sample can enter the common flow channel 111 from the sample collection chamber.

[0108] When the reagent is extracted again, the rotor 4 is rotated so that the outer end of the transfer channel 41 is aligned with the reagent hole 12. The pump 6 draws the reagent in the reagent chamber 21 into the common channel 111.

[0109] The rotor 4 continues to rotate, so that the outer end of the transfer flow channel 41 is aligned with the detection hole 13. At this time, the common flow channel 111 is connected with the detection flow channel 131 and the detection cavity 32.

[0110] Then close the air inlet three-way valve 72 and open the water inlet three-way valve 71 to draw the air in the air inlet pipe into the third pipe. Then open the air inlet three-way valve 72 to connect the third pipe, the second pipe and the first pipe, push the air into the common flow channel 111, and push the sample and reagent in the common flow channel 111 into the detection chamber 32.

[0111] The detection chamber 32 of the detection plate 31 is connected to the detection channel 131 through a pipeline, and the sample and reagent can flow from the common channel 111 into the detection channel 131 and the detection chamber 32 .

[0112] The outer shell 8 is also provided with a plurality of pipe holes 83 , which facilitate the air inlet pipe, the water inlet pipe, the pipe connected with the sample flow channel 141 and the sewage discharge pipe to penetrate into the outer shell 8 .

[0113] As a preferred solution, a mixing chamber is further provided in the detection plate 31 , which is connected to the detection chamber 32 and has a width greater than that of the detection chamber 32 . The sample and reagent first enter the mixing chamber for mixing and then enter the detection chamber 32 for detection.

[0114] The mixing chamber 303 can be configured as a substantially circular chamber, or can be configured as a plurality of bends. Fig. 20 In the illustrated embodiment, the mixing chamber includes a first mixing bend 33 and a second mixing bend 34. The two ends of the first mixing bend 33 are respectively connected to the detection channel 131 and one end of the detection chamber 32, while the two ends of the second mixing bend 34 are respectively connected to one end of the sewage pipe and the other end of the detection chamber 32. The sewage pipe is connected to the second mixing bend 34, and the other end is located in the toilet.

[0115] The samples and reagents in the common flow channel 111 enter the detection chamber 32 from the first mixing bend 33, and then enter the second mixing bend 34. After staying for 1s-2s, the pump 6 operates in reverse to pump the samples and reagents in the second mixing bend 34 into the detection chamber 32. This process is repeated many times. The samples and reagents are repeatedly mixed in the first mixing bend 33, the detection chamber and the second mixing bend 34, and finally stay in the detection chamber 32 for detection.

[0116] After the detection, the pump 6 pushes the sample and reagent in the detection chamber 32 into the second mixing bend 34 in sequence and then into the sewage flow channel, and then enters the toilet from the sewage flow channel for discharge.

[0117] The present invention also relates to a control method of a urine tester 100, such as Fig. 27 and Fig.28 As shown, the urine testing instrument 100 of this embodiment also includes the above-mentioned rotary cutting valve, reagent kit 2, detection component 3 and plunger pump 6. The rotary cutting valve is also provided with a common flow channel 111, multiple reagent flow channels 121, a sample flow channel 141, a detection flow channel 131 and a transfer flow channel 41. One end of the transfer flow channel 41 is connected to the inner end of the common flow channel 111, and the other end can be switched with the rotary cutting valve and connected to the reagent flow channel 121, the sample flow channel 141 and the detection flow channel 131.

[0118] The difference is that this embodiment does not need to set a water inlet three-way valve, an air inlet three-way valve, a water inlet pipeline and an air inlet pipeline, but an air inlet hole and an air flow channel are set on the flow channel plate of the rotary cutting valve, and the air inlet hole is located on the circumference formed by the multiple reagent holes and is formed by the bottom surface depression of the flow channel plate; the inner end of the air flow channel is connected to the air inlet hole, and the outer end is open to the outside of the flow channel plate, and the outer end is used to draw air into the rotary cutting valve. The implementation method of the air flow channel and the reagent flow channel is the same, and the transfer flow channel 41 can be switched with the rotary cutting valve and connected to the air flow channel.

[0119] In addition, in this embodiment, the common flow channel 111 is connected to the clean water collection chamber through a pipeline, and the pipeline includes a first section 106 and a second section 107. The two ends of the first section 106 are connected to the common flow channel 111 and the outlet of the pump 6, and the two ends of the second section 107 are connected to the inlet of the pump 6 and the clean water collection chamber containing clean water. The first section 106 is provided with a control valve, which is defined as the first valve 108. The second section 107 is provided with another valve, which is defined as the second valve 109.

[0120] The urine test instrument 100 further includes a first sensor, a second sensor, a fingerprint module and a warning light. The first sensor is located in the sample collection chamber and is used to sense sample liquid level information, while the second sensor is located in the clean water collection chamber and is used to sense clean water level information.

[0121] The control module is connected to the first sensor, the second sensor, the fingerprint module, the detector, the warning light, the rotary cutting valve and the pump 6, and can control the operation of the plunger pump 6, the detector and the rotary cutting valve, and receive information from the first sensor, the second sensor and the detector.

[0122] like Fig. 27 and Fig.28 As shown, the control method of the urine test instrument 100 includes the following steps: S1: the rotary cutting valve switches to the sample flow channel 141 , the first valve 108 opens, the pump 6 pulls down to draw the sample into the transfer flow channel 41 , and then the rotary cutting valve switches to the detection flow channel 131 , and the pump 6 pushes the sample in the transfer flow channel 41 into the detection flow channel 131 .

[0123] S2: The first valve 108 is closed, the second valve 109 is opened, and the pump 6 pumps clean water into the second section 107. Then the first valve 108 is opened, the second valve 109 is closed, and the pump 6 pumps clean water in the second section 107 into the common flow channel 111 and the transfer flow channel 41. Step S2 may need to be repeated multiple times to pump the clean water in the clean water collection chamber into the transfer flow channel 41, and a part of the clean water collection chamber is left in the first section 106 and the second section 107. Finally, the first valve 108 and the second valve 109 are closed.

[0124] S3: Open the first valve 108, and the pump 6 pushes the clean water in the transfer channel 41 into the detection channel 131. It is also necessary to push the water sample in the detection channel 131 into the detection chamber 32 and discharge it from the detection chamber 32.

[0125] If the plunger pump 6 has insufficient stroke, the rotary cutting valve is first switched to the air channel, the pump 6 is pulled down to draw air into the transfer channel 41, and then the rotary cutting valve is switched to the detection channel 131, the plunger pump 6 is reset, and the water and sample in the detection channel 131 are pushed into the detection chamber 32 and discharged from the detection chamber 32. After that, the rotary cutting valve is reset, and the rotary cutting valve reset is a state in which the other end of the transfer channel 41 is closed and not connected to the air channel, the detection channel 131, the sample channel 141 or the reagent channel 121.

[0126] The first three steps are to suck the sample into the sample flow channel 141 and clean water into the common flow channel 111 for subsequent quantitative use.

[0127] S4: Repeat step S2, the pump 6 pumps the clean water into the second section 107, and then pumps the water in the second section 107 into the detection channel 131, and flows into the detection chamber 32 from the detection channel 131. The detector detects the clean water in the detection chamber 32, and the detection result is used as a reference value.

[0128] Of course, if the stroke of the plunger pump 6 is insufficient, after the air is drawn into the detection channel 131, the rotary cutting valve needs to be switched to the air channel, the plunger pump 6 rotates forward to absorb a certain amount of air, and then the rotary cutting valve is switched to the detection channel 131, the plunger pump 6 is reset, and the water in the detection channel 131 is pushed into the detection chamber 32 for detection.

[0129] S5: The rotary cutting valve switches to the air flow channel, and quantitatively draws external air into the transfer flow channel 41. Then the rotary cutting valve switches to the sample flow channel 141, and the pump 6 quantitatively draws the sample in the sample flow channel 141 into the transfer flow channel 41. Air is first drawn into the transfer flow channel 41, and then the sample is drawn into the transfer flow channel 41. This part of air is located between the clean water and the sample in the common flow channel 111, preventing the clean water and the sample in the common flow channel 111 from mixing.

[0130] S6: the rotary cutting valve is switched to the reagent flow channel 121 , and the pump 6 draws the reagent in the reagent chamber 21 into the transfer flow channel 41 .

[0131] The reagent chamber 21 and the reagent flow channel 121 are in a connected state, so after each installation of the reagent kit 2, the reagent in the reagent chamber 21 will be drawn into the reagent flow channel 121, so the reagent in the reagent flow channel 121 can be directly drawn into the transfer flow channel 41 in a quantitative manner.

[0132] S7 : the rotary cutting valve is switched to the detection channel 131 , and the pump 6 pushes the sample and reagent in the transfer channel 41 into the detection channel 131 , and then pushes them into the detection chamber 32 from the detection channel 131 .

[0133] If the stroke of the plunger pump 6 is insufficient, after pushing the sample and reagent into the detection channel 131, the rotary cutting valve can be switched to the air channel, and after extracting some air from the outside, the rotary cutting valve can be switched to the detection channel 131 again to push the sample and reagent in the detection channel 131 into the detection chamber 32.

[0134] S8: The detector detects the sample in the detection chamber 32 .

[0135] S9: Repeat step S2 to pump clean water into the second section 107 and the common flow channel 111, and then push the clean water in the common flow channel 111 into the detection flow channel 131, flow into the detection cavity 32 from the detection flow channel 131 and then be discharged to clean the detection cavity 32.

[0136] S10: the rotary cutting valve is switched to the sample flow channel 141, and then step S2 is repeated, the pump 6 pushes the clean water in the common flow channel 111 into the sample flow channel 141, and the water flows from the sample flow channel 141 into the sample collection cavity and then is discharged.

[0137] It should be understood that before step S1, after the operator triggers the fingerprint module, the fingerprint module transmits a signal to the control module, and the control module starts the detection step of the urine test instrument 100.

[0138] Moreover, before step S1, the first sensor will transmit the detected sample liquid level information to the control module, and the second sensor will transmit the sensed clean water liquid level information to the control module. If the control module determines that the sample liquid level and the clean water liquid level information meet the requirements, step S1 is performed; if one of the sample liquid level and the clean water liquid level does not meet the requirements, the process is terminated.

[0139] Optionally, before step S5, it is also necessary to determine whether the sample needs to be diluted. If dilution is not required, proceed to step S5; If dilution is required, in step S5, after the pump 6 pushes the water in the common flow channel 111 into the detection flow channel 131, the rotary cut valve switches to the air flow channel, quantitatively draws external air into the transfer flow channel 41, and isolates the water in the detection flow channel 131 from the water in the common flow channel 111.

[0140] Then, the rotary cutting valve switches to the detection flow channel 131 , and the pump 6 draws a quantitative amount of water from the detection flow channel 131 into the transfer flow channel 41 .

[0141] Then the rotary cutting valve switches to the sample flow channel 141 , and the pump 6 draws a quantitative amount of the sample in the sample flow channel 141 into the transfer flow channel 41 and mixes it with the water in the transfer flow channel 41 to form a diluted sample.

[0142] The rotary cutting valve is switched to the air flow channel again, and the external air is quantitatively inhaled to isolate the diluted sample in the transfer flow channel 41 from the water in the detection flow channel 131 .

[0143] Furthermore, during the sample dilution step, that is, after step S5 is completed, the rotary cutting valve switches to the air flow channel again, and the external air is inhaled to isolate the diluted sample in the transfer flow channel 41 from the water in the detection flow channel 131. It is also necessary to determine whether all the diluted samples need to be tested.

[0144] In some detection projects, samples with a higher dilution factor need to be diluted. In this case, more clean water needs to be drawn into the detection channel 131. However, not all diluted samples are needed for detection. Therefore, in step S5, that is, before step S6, it is necessary to determine whether all samples need to be tested.

[0145] If all the diluted samples are needed, the rotary cutting valve is switched to the detection channel 131 , and the pump 6 is reset to push the diluted samples into the detection channel 131 .

[0146] The rotary cutting valve switches to the air flow channel, and the pump 6 rotates forward to suck a certain amount of air into the transfer flow channel 41. Then the rotary cutting valve switches to the detection flow channel 131, and the pump 6 sucks all the diluted samples of the detection flow channel 131 into the transfer flow channel 41 again.

[0147] If only a portion of the diluted sample is needed, the rotary cutting valve is switched to the detection channel 131 , and the pump 6 pushes the diluted sample into the detection channel 131 ; The rotary cutting valve switches to the air flow channel, and the pump 6 sucks a certain amount of air into the transfer flow channel 41. Then the rotary cutting valve switches to the detection flow channel 131, and the pump 6 quantitatively extracts the diluted sample of the detection flow channel 131 into the transfer flow channel 41. Then the rotary cutting valve switches to the air flow channel and quantitatively extracts air into the transfer flow channel 41. Then the rotary cutting valve switches to the detection flow channel 131 again, pushes the absorbed air into the detection flow channel 131, and isolates the diluted sample of the detection flow channel 131 from the diluted sample of the transfer flow channel 41.

[0148] Preferably, in an embodiment in which a first mixing bend 33 and a second mixing bend 34 are provided in the detection plate 31, in step S7, after the rotary cutting valve is switched to the detection channel 131, the plunger pump 6 pushes the sample and reagent in the transfer channel 41 into the detection channel 131, and the sample and reagent flow from the detection channel 131 and the first mixing bend 33 into the detection chamber 32, and then the plunger pump 6 rotates forward for a preset time and then reverses for a preset time, driving the sample and reagent in the detection chamber 32 to circulate in the first mixing bend 33, the detection chamber 32 and the second mixing bend 34, and finally flow into the detection chamber 32.

[0149] More preferably, S7: the rotary cutting valve switches to the detection channel 131, the pump 6 pushes the sample and reagent in the transfer channel 41 into the detection channel 131, and flows from the detection channel 131 into the second mixing bend 34 from the first mixing bend 33 and the detection chamber 32 in turn, and then stays for 1s-2s, and then the sample and reagent in the second mixing bend 34 are drawn into the detection chamber 32 and the first mixing bend 33, and after multiple cycles, finally flow into the detection chamber 32.

[0150] Staying for 2 seconds during the mixing process will increase the mixing effect.

[0151] Optionally, before step S6, it is also necessary to determine whether to extract multiple reagents. If it is required to extract one reagent, step S6 is performed; If multiple reagents are extracted, after step S6, the rotary cutting valve needs to be switched to the detection channel 131 to push the reagents in the transfer channel 41 into the detection channel 131 and mix with the samples in the detection channel 131 for reaction; After waiting for a preset time, the rotary cutting valve switches to another reagent flow channel 121, and the pump 6 draws the reagent in another corresponding reagent chamber 21 into the transfer flow channel 41, and then the rotary cutting valve switches to the detection flow channel 131 again, and pushes the reagent into the detection flow channel 131 again.

[0152] Optionally, after step S10, if the control module determines that the detection result is abnormal, steps S1 to S10 are restarted; if the detection result is normal, the next detection item is performed.

[0153] After step S10, the control module determines that two consecutive detection results are abnormal, and then controls the warning light to send out a warning signal.

[0154] Optionally, the rotary cutting valve is further provided with a washing channel. The urine testing instrument 100 further comprises a washing liquid and a washing chamber for containing the washing liquid; After the steps S1 to S10 are cycled for a preset number of times or after a preset time, it is necessary to determine whether the reagent kit 2 needs to be replaced. If the reagent kit 2 needs to be replaced, the following steps are performed: S01: the first valve 108 is closed, the second valve 109 is opened, the pump 6 pumps clean water into the second section 107, then the first valve 108 is opened, the second valve 109 is closed, the rotary cutting valve is switched to the detection flow channel 131, and the pump 6 pumps clean water in the second section 107 into the common flow channel 111, the transfer flow channel 41 and the detection flow channel 131; S02: the rotary cutting valve is switched to the washing channel, and the pump 6 pumps the washing liquid into the transfer channel 41; S03: the rotary cutting valve is switched to the detection channel 131, the pump 6 pushes the washing liquid in the transfer channel 41 into the detection channel 131 and mixes it with clean water to form a diluted washing liquid, and then pumps the diluted washing liquid into the transfer channel 41; S04: the rotary cutting valve switches to a plurality of reagent flow channels 121 in sequence, and after each switching, the pump 6 pushes the dilution washing liquid in the transfer flow channel 41 into the reagent flow channel 121 and into the reagent chamber 21; If the diluted washing solution is insufficient, steps S01 to S04 need to be repeated to fill each reagent flow channel 121 with the diluted washing solution.

[0155] S05: the rotary cutting valve switches the plurality of reagent flow channels 121 again, and the pump 6 pushes the clean water in the common flow channel 111 into the reagent flow channels 121 and into the reagent chamber 21 in sequence; If the clean water is insufficient, step S01 needs to be repeated to draw enough clean water into the common flow channel 111 , and then push the clean water into the multiple reagent flow channels 121 , push the clean water into the reagent chamber 21 , and clean the reagent flow channels 121 again.

[0156] S06: Replace the reagent kit 2.

[0157] Optionally, after the steps S1 to S10 are cyclically operated for a preset number of times, regular maintenance is required, and the steps further include: S001: the first valve 108 is closed, the second valve 109 is opened, the pump 6 pumps clean water into the second section 107, then the first valve 108 is opened, the second valve 109 is closed, the rotary cutting valve is switched to the detection flow channel 131, and the pump 6 pumps clean water in the second section 107 into the common flow channel 111, the transfer flow channel 41 and the detection flow channel 131; S002: the rotary cutting valve is switched to the washing channel, and the pump 6 pumps the washing liquid into the transfer channel 41; S003: the rotary cutting valve is switched to the detection flow channel 131, and the pump 6 pushes the washing liquid in the transfer flow channel 41 into the detection flow channel 131 and mixes with clean water to form a diluted washing liquid; S004: the rotary cutting valve is switched to the sample flow channel 141, and the pump 6 pushes the dilution washing liquid in the transfer flow channel 41 into the sample flow channel 141 and the sample collection chamber; S005: repeating steps S001 to S003, the pump 6 pushes the diluted washing liquid in the detection channel 131 into the detection chamber 32; S006: After waiting for a preset time, the rotary cutting valve switches to the sample flow channel 141, the first valve 108 is closed, the second valve 109 is opened, and the pump 6 pumps clean water into the second section 107, then the first valve 108 is opened, the second valve 109 is closed, and the pump 6 pumps the clean water in the second section 107 into the common flow channel 111, the transfer flow channel 41 and the sample flow channel 141, and then flows into the sample collection chamber, and discharges the diluted washing liquid in the sample collection chamber together; S007: The rotary cutting valve is switched to the detection flow channel 131, the first valve 108 is closed, the second valve 109 is opened, and the pump 6 pumps clean water into the second section 107. Then the first valve 108 is opened, the second valve 109 is closed, and the pump 6 pumps the clean water in the second section 107 into the common flow channel 111, the transfer flow channel 41 and the detection flow channel 131, and finally flows into the detection chamber 32, and discharges the diluted washing liquid in the detection chamber 32 together.

[0158] The public flow channel is directly connected to the clean water collection chamber. After the test is completed, the water in the public flow channel can be directly pushed into the test chamber or sample collection chamber for cleaning to improve the operating efficiency of the urine tester. Moreover, the public flow channel and the clean water collection chamber are directly connected. When samples and reagents need to be extracted, the public flow channel and the drive pipeline are first filled with clean water, and then the transfer channel is filled with air to isolate the water and samples or reagents in the public flow channel. After the pump is started, the clean water and a small part of the air in the transfer channel are used to drive the reagents and samples to move. Clean water is not easily compressed, so samples or reagents can be extracted more accurately into the microfluidic chip, and the accuracy of the test is improved.

[0159] In addition, the urine tester 100 of the present invention can be applied to routine urine tests, such as 14 ascorbic acid tests, including vitamins (C, VC), white blood cells (WBC), urobilinogen (URO), bilirubin (BIL), occult blood (BLD), nitrite (NIT), pH, protein (PRO), urine specific gravity (SG), urine ketone bodies (KET), urine glucose (GLU), urine creatinine (CR), urine calcium (CA) and microalbumin (MA) + urine uric acid + UACR (urine microalbumin / creatinine ratio) + UPCR (urine protein / creatinine ratio) + urine uric acid comprehensive value (based on CKD-EPI algorithm). In order to be able to use more items for testing, a multi-ring reagent well group can also be set on the flow channel plate.

[0160] In one embodiment, Figure 22-Figure 26 As shown, the flow channel plate 1 is provided with a plurality of first reagent holes 122 and a plurality of second reagent holes 123 , and the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are arranged at intervals around the middle flow channel and respectively penetrate the flow channel plate 1 .

[0161] The top surface of the flow channel plate 1 is provided with a first reagent flow channel 124 connected to the first reagent hole 122, and a second reagent flow channel 125 connected to the second reagent hole 123. The first reagent flow channel 124 and the second reagent flow channel 125 both extend radially, and the plurality of first reagent flow channels 124 and the plurality of second reagent flow channels 125 are at different diameters, so that the outer ends of the plurality of first reagent flow channels 124 and the outer ends of the plurality of second reagent flow channels 125 will not flow into the transfer flow channel 41 at the same time.

[0162] The outer ends of the plurality of first reagent flow channels 124 diverge radially toward the edge of the flow channel plate 1, and the outer ends of the plurality of second reagent flow channels 125 also diverge radially toward the outside. As a preferred embodiment, the plurality of first reagent holes 122 are arranged at intervals along the circumferential direction, or the plurality of second reagent holes 123 are also arranged at even intervals along the circumferential direction. Alternatively, the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are arranged at intervals.

[0163] Preferably, the plurality of first reagent flow channels 124 and the plurality of second reagent flow channels 125 are also arranged at intervals along the circumferential direction.

[0164] The outer ends of the first reagent flow channel 124 and the second reagent flow channel 125 are aligned with each reagent cavity of the reagent box 2, that is, the reagent box 2 is also provided with a plurality of first reagent cavities 211 and a second reagent cavity 212, the outer ends of the plurality of first reagent cavities 211 and the plurality of first reagent flow channels 124 are aligned one by one and connected, and the outer ends of the plurality of second reagent cavities 212 and the plurality of second reagent flow channels 125 are aligned one by one and connected. That is to say, the plurality of first reagent cavities 211 and the plurality of second reagent cavities 212 are also located on different circumferences.

[0165] In order to match the first reagent flow channel 124 and the second reagent flow channel 125, the second sealing hole 441 on the second sealing gasket needs to match the outer ends of the first reagent flow channel 124 and the second reagent flow channel 125, that is, part of the second sealing holes 441 are aligned with and connected to the outer ends of multiple first reagent flow channels 124, and another part of the second sealing holes 441 are aligned with and connected to the outer ends of multiple second reagent flow channels 125.

[0166] The second circumferential hole 451 on the second support plate 45, the positions of the plurality of pins 46, the avoidance hole 471 on the connecting plate 47 and the third sealing hole 481 of the third sealing pad 48 need to be arranged according to the position of the second sealing hole 441 and will not be described in detail.

[0167] In another embodiment, the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are also arranged at intervals along the circumference formed with the central flow channel 11 as the center, and also penetrate the flow channel plate 1. However, the plurality of second reagent holes 123 and the plurality of first reagent holes 122 are located on different circumferences and on different diameters. The spacing between the plurality of second reagent holes 123 and the central flow channel 11 can be smaller or larger than the spacing between the plurality of first reagent holes 122 and the central flow channel 11.

[0168] The reagent kit 2 may also be provided with a plurality of first reagent chambers 211 and a plurality of second reagent chambers 212, wherein the plurality of first reagent chambers 211 and the plurality of first reagent holes 122 are respectively connected, and the plurality of second reagent chambers 212 and the plurality of second reagent holes 123 are respectively connected.

[0169] In addition, the top surface of the flow channel plate 1 may also be provided with a plurality of first reagent flow channels 124, the inner ends of the plurality of first reagent flow channels 124 are respectively connected to the plurality of first reagent holes 122, and the outer ends radially diverge to the edge of the flow channel plate 1. The inner ends are used for the plurality of first reagent holes 122, and the outer ends are used for communicating with the plurality of first reagent chambers 211.

[0170] Optionally, a plurality of second reagent flow channels 125 are provided on the top surface of the flow channel plate 1 , the inner ends of the plurality of second reagent flow channels 125 are respectively connected to the plurality of second reagent holes 123 , and the outer ends diverge toward the outside and are connected to the plurality of second reagent chambers 212 .

[0171] As a preferred solution, the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are evenly spaced, so as to set the rotation angle of the rotor 4 according to the spacing between the plurality of reagent holes and control the rotation of the rotor 4. Of course, in some implementations, the spacing between the plurality of first reagent holes 122 and the plurality of second reagent holes 123 can also be randomly set.

[0172] The transfer channel 41 on the rotor 4 is a channel formed by a depression on the top surface of the rotor 4. The outer end of the transfer channel 41 can be connected to multiple first reagent holes 122, and the middle part of the transfer channel 41 is also connected to any second reagent hole 123. With this design, more reagent chambers can be arranged in a limited space to detect more items.

[0173] A sealing film 28 is also provided between the connecting plate 47 and the third sealing pad 48. The sealing film 28 is not punctured before the reagent chamber is used, and the top opening of the reagent chamber is covered. After the reagent kit 2 is installed on the urine tester 100, the insertion pin 46 of the urine tester 100 punctures the sealing film 28 and is inserted into the reagent chamber. The sealing film 28 can be a plastic film or a thin film to prevent liquid from flowing out.

[0174] Preferably, the urine testing instrument 100 further includes: a leak-proof member 29 disposed in the reagent chamber, for preventing the reagent from leaking out from the top opening of the reagent chamber.

[0175] Furthermore, if Fig.23 As shown, the leak-proof member 29 has a through hole 291 , and the leak-proof member 29 is slidably arranged along the cavity wall of the reagent cavity, and the through hole 291 extends along the extension direction of the reagent cavity, that is, extends along the vertical direction.

[0176] There is also liquid sealing oil in the reagent chamber, and the liquid sealing oil is located at the top of the reagent for sealing the reagent. The leak-proof member 29 is inserted into the liquid sealing oil, and the aperture of the through hole 291 of the leak-proof member 29 is 4mm-5mm. Optionally, the aperture of the through hole 291 of the leak-proof member 29 is 4.5mm, 4.7mm or 4.8mm. When in use, the reagent is injected into the reagent chamber from the top entrance of the reagent chamber, and then the liquid sealing oil is injected, and the leak-proof member 29 is plugged into the liquid sealing oil, while ensuring the storage space in the reagent chamber, the inner diameter of the reagent chamber is reduced toward the top inlet area, so that when the urine test instrument 100 is transported and used, the reagent in the reagent chamber will not be shaken and leaked from the top opening. The outer diameter of the leak-proof member 29 is 0.5mm-2mm smaller than the inner diameter of the reagent chamber, and after the reagent is used, the leak-proof member 29 can drop with the liquid level.

[0177] Preferred embodiments of the present invention have been described above in detail, but it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide further embodiments.

[0178] These and other changes can be made to the embodiments in light of the above detailed description.In general, in the claims, the terms used should not be considered limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which these claims are entitled.

[0179] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A urine tester, characterized in that: The urine tester comprises: A rotary cutting valve, wherein the rotary cutting valve is provided with a common flow channel, a plurality of reagent flow channels, a sample flow channel, a detection flow channel, a transfer flow channel and an air flow channel, wherein one end of the transfer flow channel is connected to the inner end of the common flow channel, and the other end can be switched with the rotary cutting valve and connected to the reagent flow channel, the sample flow channel, the detection flow channel or the air flow channel; A reagent kit, wherein the reagent kit is provided with a plurality of reagent chambers communicating with the plurality of reagent flow channels; A sampler, wherein the sampler is provided with a sample collection cavity, and the sample collection cavity is communicated with the outer end of the sample flow channel; A detection component, wherein the detection component is provided with a detector and a detection cavity, and the detection cavity is communicated with the detection flow channel; Pumps; A pipeline, the pipeline comprising a first section and a second section, two ends of the first section are connected to the common flow channel and the outlet of the pump, and two ends of the second section are connected to the inlet of the pump and a clean water collection chamber containing clean water; a first valve connected to the first section; A second valve is connected to the second section.

2. The urine tester according to claim 1, characterized in that: The rotary cutting valve comprises: a flow channel plate, wherein the flow channel plate is provided with a central flow channel, a plurality of reagent holes, a sample hole, a detection hole, the common flow channel, a plurality of the reagent flow channels, the air flow channel, the sample flow channel and the detection flow channel, the plurality of the reagent holes are respectively connected with the plurality of the reagent flow channels, the sample hole is connected with the sample flow channel, and the detection hole is connected with the detection flow channel; and The rotor is rotatably connected to the flow channel plate and is provided with the transfer flow channel. The transfer flow channel can rotate with the rotor and communicate with a plurality of the reagent flow channels, the sample flow channels, the air flow channels or the detection flow channels.

3. The urine tester according to claim 2, characterized in that: The urine tester also includes: a first sealing gasket, which is stacked on the bottom surface of the flow channel plate and is provided with a first central hole and a plurality of first sealing holes, wherein the first central hole is communicated with the central flow channel, and the plurality of first sealing holes are respectively aligned with and communicated with the sample hole, the detection hole, and the plurality of reagent holes; and A first support plate, wherein the first support plate is located between the first sealing gasket and the rotor and is provided with a second center hole and a plurality of first circumferential holes, wherein the second center hole is connected with the first center hole and the inner end of the transfer channel; and the plurality of first circumferential holes are respectively aligned with and connected with the plurality of first sealing holes.

4. The urine tester according to claim 2, characterized in that: A plurality of reagent flow channels are provided on the top surface of the flow channel plate, the inner ends of the plurality of reagent flow channels are respectively connected to the plurality of reagent holes, and the outer ends diverge radially toward the outside; The plurality of reagent chambers are respectively communicated with the outer ends of the plurality of reagent flow channels.

5. The urine tester according to claim 2, characterized in that: The urine tester also includes: A second sealing gasket, which is stacked on the top surface of the flow channel plate and is provided with a plurality of second sealing holes, wherein the plurality of second sealing holes are respectively aligned with and communicated with the outer ends of the plurality of reagent flow channels; and A second support plate, the second support plate is located on the top surface of the plurality of second sealing pads and is provided with a plurality of second circumferential holes, the plurality of second circumferential holes are respectively aligned with and communicated with the plurality of second sealing holes; The plurality of reagent chambers are respectively communicated with the plurality of second circumferential holes.

6. The urine tester according to claim 5, characterized in that: The top surface of the second support plate is also provided with a plurality of threaded holes, and the plurality of threaded holes are respectively connected with the plurality of second circumferential holes; The rotary cutting valve also includes a plurality of pins, the bottom ends of which are respectively located in the plurality of threaded holes and threadedly connected to the second support plate, the bottom ends of which are respectively connected to the plurality of second circumferential holes, and the top ends are provided with needle tips.

7. The urine tester according to claim 6, characterized in that: The urine tester also includes: A connecting plate, the connecting plate is located on the top surface of the second supporting plate and is provided with avoidance holes for avoiding the plurality of the pins; and A third sealing gasket is located on the top surface of the connecting plate and on the bottom surface of the reagent kit. The third sealing gasket is provided with a plurality of third sealing holes, and the plurality of third sealing holes are interference-fitted with the plurality of pins.

8. A method for controlling a urine tester, characterized in that: The urine tester according to claim 1 comprises the following steps: S1: Switch the rotary cutting valve to the sample flow channel, open the first valve, and use the pump to draw the sample into the transfer flow channel. Then switch the rotary cutting valve to the detection flow channel, and use the pump to push the sample in the transfer flow channel into the detection flow channel. S2: close the first valve, open the second valve, and the pump pumps clean water into the second section; then open the first valve, close the second valve, and the pump pumps clean water in the second section into the common flow channel and the transfer flow channel; S3 the pump pushes the clean water in the transfer channel into the detection channel, pushes the water and sample in the detection channel into the detection cavity, and discharges them from the detection cavity; S4: repeating step S2, the pump pumps the water in the second section into the detection channel, and the water flows from the detection channel into the detection cavity, the detector detects the clean water in the detection cavity, and uses the detection result as a reference value; S5: switching the rotary cutting valve to the air flow channel, drawing external air into the transfer flow channel, and then switching the rotary cutting valve to the sample flow channel, and the pump draws the sample in the sample flow channel into the transfer flow channel; S6: Switching the rotary cutting valve to the reagent flow channel, and the pump draws the reagent in the reagent chamber into the transfer flow channel; S7: Switching the rotary cutting valve to the detection channel, the pump pushes the sample and reagent in the transfer channel into the detection channel, and then pushes them into the detection cavity from the detection channel; S8: the detector detects the sample in the detection chamber; S9: repeating step S2, the pump pushes the clean water in the common flow channel into the detection flow channel, and the clean water flows from the detection flow channel into the detection cavity and then is discharged, so as to clean the detection cavity; S10: Switch the rotary cutting valve to the sample flow channel, and then repeat step S2, the pump pushes the clean water in the common flow channel into the sample flow channel, and the water flows from the sample flow channel into the sample collection cavity and then is discharged.

9. The control method of the urine test instrument according to claim 8, characterized in that: Before step S5, it is also necessary to determine whether the sample needs to be diluted. If dilution is not required, proceed to step S5; If dilution is required, in step S5, after the pump pushes the water in the common flow channel into the detection flow channel, the rotary cut valve is switched to the air flow channel, and external air is drawn into the transfer flow channel to isolate the water in the detection flow channel from the water in the common flow channel. The rotary cut valve is then switched to the detection flow channel, and the pump quantitatively sucks the water in the detection flow channel into the transfer flow channel. The rotary cut valve is then switched to the sample flow channel, and the pump draws the sample in the sample flow channel into the transfer flow channel and mixes it with the water in the transfer flow channel to form a diluted sample. The rotary cutting valve switches to the air flow channel again, and inhales external air to isolate the diluted sample in the transfer flow channel from the water in the detection flow channel.

10. The control method of the urine test instrument according to claim 9, characterized in that: If dilution is required, in step S5, the rotary cutting valve is switched to the air flow channel again, and the external air is sucked in to isolate the diluted sample in the transfer flow channel from the water in the detection flow channel. It is also necessary to determine whether all the diluted samples need to be tested; If all the diluted samples are needed, the rotary cutting valve is switched to the detection channel, and the pump pushes the diluted samples into the detection channel; The rotary cutting valve is switched to the air flow channel, and the pump sucks a certain amount of air into the transfer flow channel. Then the rotary cutting valve is switched to the detection flow channel, and the pump sucks all the diluted samples of the detection flow channel into the transfer flow channel again. If only a portion of the diluted sample is needed, the rotary cutting valve is switched to the detection channel, and the pump pushes the diluted sample into the detection channel; The rotary cutting valve is switched to the air flow channel, and the pump will suck a certain amount of air into the transfer flow channel. The rotary cutting valve is then switched to the detection flow channel, and the pump quantitatively extracts the diluted sample from the detection flow channel into the transfer flow channel. The rotary cutting valve is then switched to the air flow channel, and quantitatively extracts air into the transfer flow channel. The rotary cutting valve is then switched to the detection flow channel again, and the absorbed air is pushed into the detection flow channel, thereby isolating the diluted sample from the detection flow channel from the diluted sample from the transfer flow channel.

11. The control method of the urine tester according to claim 8, characterized in that: The detection component also includes: a first mixing bend, wherein two ends of the first mixing bend are respectively connected to the detection flow channel and one end of the detection cavity; and a second mixing bend, one end of the second mixing bend being connected to the other end of the detection cavity; Among them, in S7, the rotary cutting valve is switched to the detection channel, and the pump pushes the sample and reagent in the transfer channel into the detection channel, and pushes them from the detection channel from the first mixing bend into the detection cavity, and then the pump drives the sample and reagent in the detection cavity to circulate in the first mixing bend, the detection cavity and the second mixing bend, and finally flows into the detection cavity.

12. The control method of the urine tester according to claim 11, characterized in that: In S7, the rotary cutting valve is switched to the detection channel, and the pump pushes the sample and reagent in the transfer channel into the detection channel, and flows from the detection channel into the second mixing bend through the first mixing bend and the detection chamber in sequence, and then stays for 1s-2s, and then the sample and reagent in the second mixing bend are drawn into the detection chamber and the first mixing bend, and after multiple cycles, finally flow into the detection chamber.

13. The control method of the urine tester according to claim 8, characterized in that: Before step S6, it is necessary to determine whether to extract multiple reagents. If only one reagent needs to be extracted, proceed to step S6; If multiple reagents need to be extracted, after step S6, the rotary cutting valve needs to be switched to the detection channel to push the reagents in the transfer channel into the detection channel to mix and react with the samples in the detection channel; After waiting for a preset time, the rotary cutting valve is switched to another reagent flow channel, and the pump draws the reagent in another corresponding reagent chamber into the transfer flow channel, and then the rotary cutting valve is switched to the detection flow channel again, and the reagent is pushed into the detection flow channel again.

14. The control method of the urine test instrument according to claim 8, characterized in that: The urine tester further comprises a first sensor and a second sensor, wherein the first sensor is located in the sample collection chamber, and the second sensor is located in the clean water collection chamber; Before step S1, it is also necessary to determine the sample liquid level according to the first sensor and the clean water liquid level according to the second sensor. If both the sample liquid level and the clean water liquid level meet the requirements, step S1 is performed; if one of the sample liquid level and the clean water liquid level does not meet the requirements, the process ends.

15. The control method of the urine test instrument according to claim 14, characterized in that: The urine test instrument further includes a control module, which is connected to the pump, the first sensor, the second sensor, the detector and the rotary cutting valve, and is used for the operation of the pump, the detector and the rotary cutting valve, and receives information from the first sensor, the second sensor and the detector; Before step S1, the first sensor transmits the detected sample liquid level information to the control module, and the second sensor transmits the detected clean water liquid level information to the control module. If the control module determines that the sample liquid level and the clean water liquid level information meet the requirements, step S1 is performed. If one of the sample liquid level and the clean water liquid level does not meet the requirements, the process ends; After step S10, the control module determines that the detection result is abnormal, and restarts steps S1 to S10; if the detection result is normal, the next detection item is performed.

16. The control method of the urine tester according to claim 15, characterized in that: The urine test instrument further comprises a warning light, and the warning light is connected to the control module; After step S10, the control module determines that two consecutive detection results are abnormal, and then controls the warning light to send out a warning signal.

17. The control method of the urine test instrument according to claim 8, characterized in that: The rotary cutting valve is also provided with a washing flow channel; The urine test instrument also includes a washing liquid and a washing chamber containing the washing liquid; After the steps S1 to S10 are cycled for a preset number of times, it is necessary to determine whether the reagent kit needs to be replaced. If the reagent kit needs to be replaced, the following steps are performed: S01: close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and switch the rotary valve to the detection flow channel. The pump pumps clean water in the second section into the common flow channel, the transfer flow channel, and the detection flow channel. S02: switching the rotary cutting valve to the washing channel, and the pump pumping the washing liquid into the transfer channel; S03: the rotary cutting valve is switched to the detection channel, the pump pushes the washing liquid in the transfer channel into the detection channel to mix with clean water to dilute it into a diluted washing liquid, and then the diluted washing liquid is pumped into the transfer channel; S04: switching the rotary cutting valve to multiple reagent flow channels in sequence, and after each switching, the pump pushes the dilution washing solution in the transfer flow channel into the reagent flow channel and into the reagent chamber; S05: the rotary cutting valve is switched to the plurality of reagent flow channels again, and the pump pushes the clean water in the common flow channel into the reagent flow channels and into the reagent chamber in sequence; S06: Replace the reagent kit.

18. The control method of the urine test instrument according to claim 8, characterized in that: The rotary cutting valve is also provided with a washing flow channel; The urine test instrument also includes a washing liquid and a washing chamber containing the washing liquid; After the steps S1 to S10 are cycled for a preset number of times, regular maintenance is required. The control method further includes the steps of: S001: close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and switch the rotary valve to the detection flow channel. The pump pumps clean water in the second section into the common flow channel, the transfer flow channel, and the detection flow channel. S002: Switch the rotary cutting valve to the washing channel, and the pump draws the washing liquid into the transfer channel; S003: Switch the rotary cutting valve to the detection flow channel, and the pump pushes the washing liquid in the transfer flow channel into the detection flow channel to mix with clean water to dilute it into diluted washing liquid; S004: Switch the rotary cutting valve to the sample flow channel, and the pump pushes the dilution washing solution in the transfer flow channel into the sample flow channel and the sample collection chamber; S005: repeating steps S001 to S003, the pump pushes the diluted washing liquid in the detection channel into the detection cavity; S006: After waiting for a preset time, the rotary cutting valve is switched to the sample flow channel, and the first valve is closed, the second valve is opened, and the pump pumps clean water into the second section, and then the first valve is opened, the second valve is closed, and the pump pumps the clean water in the second section into the common flow channel, the transfer flow channel and the sample flow channel, and then flows into the sample collection chamber, and the diluted washing liquid in the sample collection chamber is discharged together; S007: Switch the rotary cutting valve to the detection flow channel, close the first valve, open the second valve, and the pump pumps clean water into the second section. Then open the first valve, close the second valve, and the pump pumps the clean water in the second section into the common flow channel, the transfer flow channel and the detection flow channel, and finally flows into the detection chamber to discharge the diluted washing liquid in the detection chamber.

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