Toilet, urine analyzer, and rotary switching valve of urine analyzer

Abstract

The present invention relates to a toilet, a urine analyzer, and a rotary switching valve of the urine analyzer. The rotary switching valve comprises a flow channel plate and a rotor. The flow channel plate is provided with a central flow channel, a sample hole, a test hole, a common flow channel, a sample flow channel, a test flow channel and a plurality of reagent holes. The plurality of reagent holes are arranged at intervals on a circumference centered on the central flow channel and run through the flow channel plate. The sample hole is located on the circumference and is formed by recessing a bottom surface of the flow channel plate. The test hole is located on the circumference and is formed by recessing the bottom surface of the flow channel plate. The inner end of the common flow channel is communicated with the central flow channel. The inner end of the sample flow channel is communicated with the sample hole. The inner end of the test flow channel is communicated with the test hole. The rotor is rotatably connected to the bottom surface of the flow channel plate and is provided with a transfer flow channel. The center of the rotor is aligned with the central flow channel. The inner end of the transfer flow channel is located at the center of the rotor, and the outer end of the transfer flow channel is located on the circumference.

Description

Toilet, urine analyzer and its rotary valve

[0001] This invention claims priority to Chinese Patent Application No. 202510361604.7, filed with the Chinese Patent Office on March 26, 2025, entitled "Toilet, Urine Analyzer and its Cutting Valve", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of urine testing equipment technology, and in particular to a toilet, a urine testing instrument, and its rotary valve. Background Technology

[0003] With increasing human lifespan, the importance of health care and maintenance has received growing attention. Urine can reflect a person's health status to a certain extent; quantitative analysis of urine components can reveal diseases of the pancreas and kidneys. Urine analysis is an important indicator for detecting a person's physical condition, typically testing for pH, protein, occult blood, specific gravity, glucose, ketones, urobilinogen, nitrates, white blood cells, bilirubin, and vitamin C, reflecting a range of bodily indicators. Urine tests are usually conducted in hospitals. Due to strained medical resources, patients often have to queue to register, see a doctor, pay fees, collect urine samples, and wait for batches of tests before queuing for results, which is time-consuming and laborious.

[0004] As people's living standards improve and they pay increasing attention to their health, they are no longer satisfied with just macroscopic assessments of their physical condition. They require more detailed data and qualitative analysis of various bodily indicators. This necessitates that testing instruments use extremely small amounts of liquid to analyze various indicators, placing higher demands on sample size and the precision of testing channels. Existing machines do not meet these needs. Summary of the Invention

[0005] The purpose of this invention is to provide a toilet, a urine analyzer, and a rotary valve thereof to solve the problems of the prior art.

[0006] To solve the above-mentioned technical problems, embodiments of the present invention provide a rotary cutting valve, the rotary cutting valve comprising:

[0007] Flow channel plate, wherein the flow channel plate is provided with:

[0008] A central flow channel is formed by the bottom surface of the flow channel plate being recessed to a predetermined depth towards the top;

[0009] Multiple reagent holes are spaced apart along a circumference formed with the central flow channel as the center and penetrate the flow channel plate;

[0010] Sample hole, the sample hole being located on the circumference and formed by a recess in the bottom surface of the flow channel plate;

[0011] A detection hole, which is located on the circumference and is formed by a recess in the bottom surface of the flow channel plate;

[0012] A common flow channel, the inner end of which is connected to the central flow channel;

[0013] A sample flow channel, the inner end of which communicates with the sample orifice; and

[0014] A detection channel, the inner end of which is connected to the detection hole;

[0015] The rotor is rotatably connected to the bottom surface of the flow channel plate and has a transfer flow channel. The center of the rotor is aligned with the center flow channel. The inner end of the transfer flow channel is located at the center of the rotor, and the outer end is located on the circumference.

[0016] In one embodiment, the rotary valve further includes:

[0017] A conduit, which is connected to the common flow channel;

[0018] A pump, which is connected to the pipeline.

[0019] In one embodiment, the rotary valve further includes:

[0020] plunger pump;

[0021] Inlet three-way valve;

[0022] Intake three-way valve;

[0023] The first pipe has one end connected to the common flow channel and the other end connected to the inlet three-way valve;

[0024] The second pipe has one end connected to the water inlet three-way valve and the other end connected to the air inlet three-way valve;

[0025] The third pipe has one end connected to the intake three-way valve and the other end connected to the plunger pump;

[0026] Water inlet pipe, the water inlet pipe being connected to the water inlet three-way valve; and

[0027] An intake pipe is provided, which is connected to the intake three-way valve.

[0028] In one embodiment, the rotary valve further includes:

[0029] A first sealing gasket, stacked on the bottom surface of the flow channel plate, has a first central hole and multiple first sealing holes. The first central hole communicates with the central flow channel, and the multiple first sealing holes are respectively aligned with and communicate with the sample hole, the detection hole, and the multiple reagent holes; and

[0030] A first support plate is located between the first sealing gasket and the rotor and is provided with a second central hole and a plurality of first circumferential holes. The second central hole communicates with the first central hole and the inner end of the transfer channel. The plurality of first circumferential holes and the plurality of first sealing holes are aligned and communicate with each other.

[0031] In one embodiment, the bottom surface of the first sealing gasket is provided with a plurality of first bottom sealing rings, which are respectively arranged around the first central hole and the plurality of first sealing holes.

[0032] In one embodiment, the top surface of the first sealing gasket is provided with a plurality of first top sealing rings, which are respectively arranged around the first central hole and the plurality of first sealing holes.

[0033] In one embodiment, the bottom surface of the flow channel plate is provided with a receiving groove, and the first sealing gasket and the first support plate are located in the receiving groove.

[0034] In one embodiment, the sidewall of the receiving groove is provided with a limiting groove;

[0035] The first sealing gasket and the first support plate are respectively provided with limiting blocks located in the limiting groove on their radial outer sides.

[0036] In one embodiment, the top surface of the flow channel plate is provided with a plurality of reagent flow channels, the inner ends of the plurality of reagent flow channels are respectively connected to a plurality of reagent holes, and the outer ends diverge radially outward.

[0037] In one embodiment, the rotary valve further includes:

[0038] A second sealing gasket, stacked on the top surface of the flow channel plate and having multiple second sealing holes, wherein the multiple second sealing holes are respectively aligned with and communicate with the outer ends of the multiple reagent flow channels; and

[0039] The second support plate is located on the top surface of the plurality of second sealing gaskets and is provided with a plurality of second circumferential holes, the plurality of second circumferential holes being aligned with and connected to the plurality of second sealing holes respectively.

[0040] In one embodiment, the bottom surface of the second sealing gasket is provided with a plurality of second bottom sealing rings, and the projections of the plurality of bottom sealing rings along the vertical direction are respectively located outside the projections of the plurality of reagent flow channels along the vertical direction.

[0041] In one embodiment, the top surface of the second sealing gasket is provided with a plurality of second top sealing rings, which are respectively arranged around a plurality of second sealing holes.

[0042] In one embodiment, the top surface of the second sealing gasket is provided with a plurality of sealing rings, the plurality of sealing rings being arranged around a plurality of second sealing holes respectively, and the outer periphery of each sealing ring overlapping the radial outer side of each second top sealing ring, and the inner periphery being located inside the second top sealing ring.

[0043] In one embodiment, the projections of the plurality of second top sealing rings along the vertical direction overlap with the projections of the plurality of second bottom sealing rings along the vertical direction.

[0044] In one embodiment, the top surface of the second support plate is further provided with a plurality of threaded holes, and the plurality of threaded holes are respectively connected to a plurality of second circumferential holes;

[0045] The rotary valve also includes a plurality of pins, the bottom ends of which are located in a plurality of threaded holes and threadedly connected to the second support plate. The bottom ends of the plurality of pins are respectively connected to a plurality of second circumferential holes, and the top ends are provided with pin tips.

[0046] In one embodiment, the top surface of the second support plate is provided with a concave ring, which extends circumferentially along the second support plate and is located at the edge of the second support plate.

[0047] The rotary valve also includes a metal ring located within the concave ring.

[0048] In one embodiment, the plurality of reagent channels extend radially and have different lengths.

[0049] In one embodiment, the outer ends of some of the reagent channels are on the same circumference, while the outer ends of other portions of the reagent channels are on a different circumference.

[0050] In one embodiment, the outer end of the common flow channel and / or the inner end of the sample flow channel and / or the outer end of the detection flow channel are located radially outside the flow channel plate.

[0051] In one embodiment, the flow channel plate is further provided with an air inlet and an air channel. The air inlet is located on the circumference and is formed by a recess in the bottom surface of the flow channel plate. The inner end of the air channel communicates with the air inlet, and the outer end is open to the outside of the flow channel plate.

[0052] One end of the pipe is connected to the common flow channel, and the other end is connected to the clean water collection chamber containing clean water. This invention also relates to a urine analyzer, which includes:

[0053] The aforementioned rotary valve;

[0054] The reagent kit has multiple reagent chambers, each of which is connected to a plurality of reagent orifices.

[0055] A sample collector, wherein the sample collector is provided with a sample collection cavity, and the sample collection cavity is connected to the outer end of the sample flow channel;

[0056] The detection plate has a detection cavity that is connected to the detection flow channel.

[0057] The present invention also relates to a toilet that includes the aforementioned urine analyzer.

[0058] The rotary valve of this invention can be used with reagent kits to extract various reagents into a microfluidic chip, and can accurately and quantitatively extract samples, reagents or water into the microfluidic chip, improving testing accuracy and facilitating cleaning and drainage. Attached Figure Description

[0059] Figure 1 is a perspective view of a urine analyzer according to an embodiment of the present invention.

[0060] Figure 2 is an exploded view of the urine analyzer in the embodiment shown in Figure 1.

[0061] Figure 3 is an assembly diagram of the embodiment shown in Figure 1 after the outer shell has been removed.

[0062] Figures 4, 5, and 6 are exploded views of the embodiment shown in Figure 1 after removing the outer casing, two three-way valves, circuit board, and detection board.

[0063] Figures 7, 8, and 9 are perspective views of the flow channel plate in the embodiment shown in Figure 1.

[0064] Figure 10 is a cross-sectional view of the flow channel plate along line AA in the embodiment shown in Figure 9.

[0065] Figure 11 is a cross-sectional view of the flow channel plate along line BB in the embodiment shown in Figure 9.

[0066] Figures 12 and 13 are perspective views of the first sealing gasket in the embodiment shown in Figure 1.

[0067] Figures 14 and 15 are perspective views of the second sealing gasket in the embodiment shown in Figure 1.

[0068] Figure 16 is an exploded view of the embodiment shown in Figure 1 after removing the outer casing, two three-way valves, circuit board and detection board.

[0069] Figure 17 is an exploded view of the reagent kit, mounting base, and pull ring in the embodiment shown in Figure 1.

[0070] Figure 18 is a perspective view of a detection plate according to an embodiment of the present invention.

[0071] Figure 19 is a perspective view of the detection plate of the embodiment shown in Figure 18.

[0072] Figure 20 is a cross-sectional view of the detection plate along the CC line in the embodiment shown in Figure 19.

[0073] Figures 21 and 22 are exploded views of a reagent kit and a rotary valve according to another embodiment of the present invention.

[0074] Figure 23 is an exploded view of the reagent kit and leak-proof component in the embodiment shown in Figure 21.

[0075] Figure 24 is a perspective view of the second sealing gasket in the embodiment shown in Figure 21.

[0076] Figure 25 is a perspective view of the flow channel plate in the embodiment shown in Figure 21.

[0077] Figure 26 is an assembly diagram of the second support plate, metal ring and pin in the embodiment shown in Figure 21.

[0078] Figure 27 is a flowchart of the control method of a urine analyzer according to an embodiment of the present invention.

[0079] Figure 28 is a working fluid path diagram of a urine analyzer according to an embodiment of the present invention. Detailed Implementation

[0080] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0081] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0082] The embodiments of the present invention will be described in detail below 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 drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0083] Throughout this specification, references to "an 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. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0084] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0085] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0086] This invention relates to a toilet and its urine analyzer 100. The urine analyzer 100 includes a support 9, a rotary valve, a reagent kit 2, a sampler, a detection component 3, a pump 6, two three-way valves, multiple pipes, a control module, and a housing 8. The reagent kit 2, detection component 3, pump 6, two three-way valves, multiple pipes, and control module are located within the housing 8. The rotary valve includes a microfluidic chip, a rotor 4, and a drive component 5. The microfluidic chip includes a flow channel plate 1, a second sealing gasket 44, and a second support plate 45.

[0087] The outer casing 8 can be installed inside the water tank of a toilet, typically a smart toilet. The water tank of a smart toilet has a partitioned compartment for housing various electrical components. Of course, in other embodiments, the urine analyzer 100 of the present invention can also be adapted to a regular toilet, or it can be installed outside the water tank; the specific installation location of the urine analyzer 100 is not limited.

[0088] The sampler (not shown in the figure) is located on the inner wall of the toilet bowl. The sampler has a sample collection chamber for collecting samples. The sample collection chamber is usually also equipped with a sensor to sense whether a sample has been collected in the collection chamber. This sensor can be an infrared sensor or other liquid level sensor, etc., and there is no restriction on the specific type of sensor.

[0089] The urine analyzer of the present invention also includes a water storage container for holding clean water, the water storage container having a clean water collection chamber for collecting clean water, and a sensor for sensing the liquid level being provided in the clean water collection chamber.

[0090] Reagent kit 2 holds various reagents, and the microfluidic chip receives samples and reagents. The rotary valve, in conjunction with pump 6, pushes 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. The detection plate 31 is made of transparent material and has a detection chamber 32, which receives samples and reagents from the microfluidic chip. The detector is used to detect the samples within the detection plate 31. The control module controls the operation of the drive unit 5 and pump 6, and can also receive information from the sensors in the detection component 3 and the sample collection chamber or water collection chamber.

[0091] In a specific embodiment, as shown in Figures 7-9, the flow channel plate 1 is a disc-shaped plate formed around a vertical axis and is provided with a central flow channel 11, multiple reagent holes 12, sample holes 14, detection holes 13, a common flow channel 111, a sample flow channel 141, and a detection flow channel 131. The central flow channel 11 is located at the center of the flow channel plate 1 and is formed by a predetermined depth of indentation from the bottom surface of the flow channel plate 1 toward the top. The central flow channel 11 extends in the vertical direction and does not penetrate the flow channel plate 1.

[0092] Multiple reagent wells 12 are arranged at intervals along a circumference formed with the central flow channel 11 as the center and penetrate the flow channel plate 1, meaning that the distance between each reagent well 12 and the central flow channel 11 is the same. As a preferred embodiment, the multiple reagent wells 12 are evenly spaced around this vertical axis. The top end of each reagent well 12 is used to receive reagents in the reagent kit 2, and the bottom end is used for reagents to flow into the common flow channel 111.

[0093] The sample hole 14 is formed by a recess at the bottom of the flow channel plate 1 and is also located on the aforementioned 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 it is open towards the bottom surface of the flow channel plate 1.

[0094] The detection hole 13 is also formed by the bottom recess of the flow channel plate 1 and is also located on the aforementioned 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 towards the bottom surface of the flow channel plate 1.

[0095] The inner end of the sample channel 141 is connected to the sample hole 14, while the outer end extends radially to the radially outer side of the channel plate 1. The sample channel 141 is a channel that extends radially along the channel plate 1 and is located inside the channel plate 1. The outer end of the sample channel is connected to the sample collection cavity through a pipe.

[0096] The detection channel 131 and the sample channel 141 are identical, both extending radially along the channel plate 1. The inner end of the channel 131 communicates with the detection hole 13, while the outer end extends radially to the outer side of the channel plate 1. The outer opening of the detection channel 131 is adjacent to the outer opening of the sample channel 141. One pipe in the inspection channel is connected to the detection chamber.

[0097] The common flow channel 111 is also a flow channel extending radially along 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, it can draw out the air in the common flow channel 111 to form a negative pressure state, so as to draw the reagents and samples into the common flow channel 111. The pump 6 can also draw air into the common flow channel 111 and drive the reagents or samples in the common flow channel 111 to flow into the detection chamber 32.

[0098] The rotor 4 is connected to the drive component 5, as shown in Figure 5. The drive component 5 is a motor, which is mounted on the bracket 9.

[0099] The bracket 9 is installed inside the housing 8 and has an annular mounting ring 91 at its top, while the output shaft of the motor extends vertically and its top is located inside the mounting ring 91.

[0100] The rotor 4 is connected to the output shaft of the motor and is also located within 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, it can drive the rotor to rotate relative to the flow channel plate 1.

[0101] 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. The inner end 411 of the transfer flow channel 41 is located at the center of the rotor 4 and opens towards 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 towards 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 multiple reagent holes 12 in the vertical direction. That is to say, 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 hole 12, sample hole 14 or detection hole 13.

[0102] In the embodiment shown in Figure 5, the transfer channel 41 is formed by a recess in the top surface of the rotor 4. It should be understood that in other embodiments, the transfer channel 41 may also be a channel located inside the rotor 4, with its outer end 412 and inner end 411 both configured to open towards the top surface of the rotor 4. The inner end 411 is connected to the central channel 11, and the outer end 412 is used to connect to the reagent hole 12, the sample hole 14, or the detection hole 13. The present invention does not limit the specific implementation of the transfer channel 41.

[0103] The inner end 411 of the transfer channel 41 is connected to the central channel 11 and the common channel 111. 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. The pump 6 can extract the air from the common channel 111 and the reagent hole 12 to create a negative pressure, thereby drawing 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.

[0104] To increase the sealing between the rotor 4 and the flow channel plate 1, a first sealing gasket 42 and a first support plate 43 are also provided between the rotor 4 and the flow channel plate 1, as shown in Figures 5, 6, 12 and 13. The first sealing gasket 42 is stacked on the bottom surface of the flow channel plate 1 and has a first central hole 421 and multiple first sealing holes 422. The first central hole 421 is a channel that passes through the first sealing gasket 42 and its top end is aligned with and connected to the central flow channel 11. The multiple first sealing holes 422 are also through holes and are aligned with and connected to the sample hole 14, the detection hole 13 and the multiple reagent holes 12, respectively.

[0105] 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, with its top end communicating with the first central hole 421 and its bottom end communicating with 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 respectively aligned with and communicate with the plurality of first sealing holes 422.

[0106] The inner end 411 of the transfer channel 41 is connected to the common channel 111 through the first central hole 421 and the second central 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.

[0107] Furthermore, to enhance the sealing effect, the bottom surface of the first sealing gasket 42 is provided with multiple first bottom sealing rings 424, while the top surface is provided with multiple first top sealing rings 423. The multiple first bottom sealing rings 424 and multiple first top sealing rings 423 are respectively arranged around the first central hole 421 and multiple first sealing holes 422. That is, one first bottom sealing ring 424 and one first top sealing ring 423 are arranged around the first central hole 421, while the remaining first top sealing rings 423 and first bottom sealing rings 424 are arranged around the first sealing holes 422. The first top sealing rings 423 and first bottom sealing rings 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 together, they compress the multiple first top sealing rings 423 and multiple first bottom sealing rings 424, which can increase the sealing effect between the rotor 4 and the flow channel plate 1, preventing samples or reagents from overflowing from between the first central hole 421 and the first sealing holes 422.

[0108] Of course, in other embodiments, a first top sealing ring 423 or a first bottom sealing ring 424 can be provided separately, as long as the sealing effect can be guaranteed.

[0109] As a preferred embodiment, the bottom surface of the flow channel plate 1 is provided with a cylindrical receiving groove 15, as shown in Figure 8. The depth of the receiving groove 15 is just enough to accommodate the first sealing gasket 42 and the first support plate 43. The first support plate 43 and the first sealing gasket 42 are fixedly connected to the top wall of the receiving groove 15 by screws.

[0110] Furthermore, the sidewall of the receiving groove 15 is also provided with a limiting groove 16 recessed radially outward. In the embodiments shown in Figures 6 and 8, there are four limiting grooves 16, which are spaced apart. The first sealing gasket 42 and the first support plate 43 are respectively provided with four limiting blocks 425 located in the limiting grooves 16 on their radially outer sides, which can restrict the first support plate 43 and the first sealing gasket 42 from rotating when driven by the rotor 4.

[0111] The top surface of the flow channel plate 1 is provided with multiple reagent channels 121. The inner ends of the multiple reagent channels 121 are respectively connected to multiple reagent holes 12, and the outer ends diverge radially outward. The outer ends of the reagent channels 121 are used to communicate with the reagent chamber 21. The outer ends of the reagent channels 121 diverge radially outward from the flow channel plate 1, which increases the distance between the outer ends of two adjacent reagent channels 121, making it easier 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 channels 121 needs to be on a circumference and communicate with the reagent hole 12, and the other end can be located inside the circumference or diverge outward from the circumference. Alternatively, in some embodiments, the top end of the reagent hole 12 is directly connected to the reagent chamber 21, and it is not necessary to provide reagent channels 121.

[0112] A second sealing gasket 44 is also stacked on the top surface of the flow channel plate 1, as shown in Figures 5, 6, 14 and 15. A second support plate 45 is installed on the top surface of the second sealing gasket 44. Both the second support plate 45 and the second sealing gasket 44 are fixedly connected to the flow channel plate 1. In the embodiments shown in Figures 14 and 15, the second sealing gasket 44 and the second support plate 45 are fixed to the flow channel plate 1 by several screws.

[0113] 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 the second sealing gasket 44 and are respectively aligned with and connected to the outer ends of the plurality of reagent flow channels 121.

[0114] The second support plate 45 is provided with a plurality of second circumferential holes 451, which respectively penetrate the second support plate 45 and are respectively aligned with and connected to a plurality of second sealing holes 441.

[0115] The bottom surface of the second sealing gasket 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. The second bottom sealing rings 443 and the second top sealing rings 442 are radially extending annular shapes 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 vertical projections of the plurality of second bottom sealing rings 443 and the plurality of second top sealing rings 442 are respectively located outside the vertical projections of the plurality of reagent flow channels 121. That is to say, the second bottom sealing rings 443 and the second top sealing rings 442 are used to prevent liquid from overflowing from the reagent flow channels 121.

[0116] Furthermore, to prevent reagents from flowing radially within the second top sealing ring 442, a plurality of sealing rings 444 are provided on the top surface of the second sealing gasket 44. These sealing rings 444 are annular rings extending around a plurality of second sealing holes 441, and are located within the plurality of second top sealing rings 442. Each sealing ring 444 is circumferentially divided into two parts, defined as an outer periphery and an inner periphery. The outer periphery is the portion of the sealing ring 444 furthest from the center of the flow channel plate 1, and the inner periphery is the portion closer to the center. The outer periphery of each sealing ring 444 overlaps with the radially outer portion of the second top sealing ring 442, while the inner periphery is located within the second top sealing ring 442.

[0117] The second sealing ring 444 is smaller in shape to prevent reagent from flowing radially within the second top sealing ring 442.

[0118] The top surface of the second support plate 45 is also provided with a plurality of threaded holes 452, which are respectively connected to a plurality of second circumferential holes 451. A pin 46 is installed in each threaded hole 452. The bottom end of the pin 46 is threaded and can be threaded to the threaded hole 452. The top end is provided with a needle tip, which can be inserted into each reagent chamber 21.

[0119] The tip of each 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.

[0120] Both the first and second sealing gaskets are 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 embodiment, a concave ring 453 is provided on the top surface of the second support plate 45. The concave ring 453 extends circumferentially along the second support plate 45 and is located at the edge of the second support plate 45. A metal ring 454 is installed inside the concave ring 453. The metal ring 454 is preferably made of stainless steel, and the metal ring 454 is fixed to the flow channel plate 1 along with the second support plate 45 and the second sealing gasket by several screws. The metal ring 454 has high hardness, which can enhance the squeezing force on the second sealing gasket 44.

[0121] Multiple pins 46 can be directly inserted into each reagent chamber 21 of the reagent kit 2. However, as a preferred embodiment, a connecting plate 47 and another sealing gasket are provided between the second support plate 45 and the reagent kit 2. This sealing gasket, in conjunction with the connecting plate 47, can increase the sealing performance between the second support plate 45 and the reagent kit 2. This sealing gasket is defined as the third sealing gasket 48.

[0122] Specifically, the connecting plate 47 is annular and has multiple clearance holes 471, which are through holes penetrating the connecting plate 47. Multiple needles 46 pass through the multiple clearance holes 471 and are then inserted into the multiple reagent chambers 21.

[0123] The third sealing gasket 48 is also annular and has multiple third sealing holes 481. After the tops of the multiple needles 46 pass through the multiple clearance holes 471 and the multiple third sealing holes 481, their needle tips are respectively inserted into the multiple reagent chambers 21. The tops of the multiple needles 46 and the multiple third sealing holes 481 are press-fitted to prevent the reagent in the reagent chambers 21 from leaking out from the needles 46.

[0124] 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 of the kit 2 near the center by multiple screws, which compress the third sealing gasket 48.

[0125] The connecting plate 47, the third sealing gasket 48, and the reagent kit 2 are fixedly assembled and can be disassembled together from the outer casing 8.

[0126] The reagent kit 2 is cylindrical and located on the top surface of the third sealing gasket 48. The reagent kit 2 has multiple reagent chambers 21 that extend vertically. Each reagent chamber 21 has an opening at its bottom, through which the tip of the needle 46 can be inserted.

[0127] The top wall of the outer shell 8 is provided with a circular mounting hole 81, as shown in Figure 2. After the reagent kit 2, the connecting plate 47 and the third sealing gasket 48 are assembled, they can be installed into the outer shell 8 through the mounting hole 81. The tips of multiple needles 46 are inserted into multiple reagent chambers 21 through the clearance hole 471 of the mounting plate and the third sealing hole 481 of the third sealing gasket 48.

[0128] A microswitch with a contact is also provided at the radial outer edge of the second support plate 45. The connecting plate 47 also has an actuating block 24, as shown in Figure 4, which is aligned vertically with the contact. After the reagent kit 2 and the connecting plate 47 are installed into the housing 8, the actuating block 24 on the connecting plate 47 will activate the contact. In other words, the microswitch will be turned on after the reagent kit 2 is installed in place.

[0129] The micro switch is connected to the control module via signal or electrical connection. When the contacts of the micro switch are activated, the signal indicating that the reagent kit 2 is installed in place is transmitted to the control module.

[0130] The inner wall of the mounting hole 81 is also provided with a guide groove 82, which is formed by the recess in the inner wall of the mounting hole 81. The radial outer side of the reagent kit 2 is also provided with a positioning member 23 located in the guide groove 82. The positioning member 23 is a long column extending along the vertical direction of the reagent kit 2.

[0131] When installing reagent kit 2, the positioning element 23 is matched with the guide groove 82 to facilitate the positioning and installation of reagent kit 2.

[0132] The top of reagent kit 2 is provided with a pull ring 27, as shown in Figures 1 and 17. The pull ring 27 is ring-shaped and rotatably connected to the top of reagent kit 2. The pull ring 27 facilitates the removal of reagent kit 2 from the multiple pins 46.

[0133] In the specific embodiment shown in Figure 17, the top surface of the reagent kit 2 is provided with a recessed mounting groove 25. The mounting groove 25 can be a through groove extending in the vertical direction or a groove recessed to a predetermined depth in the vertical direction.

[0134] A mounting base 22 is installed within the mounting groove 25. The mounting base 22 is connected to the inner wall of the mounting groove 25 and has a rotating shaft 26 on it. The rotating shaft 26 is rotatably connected to the mounting base 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 may also be fixedly connected to the inner wall of the mounting groove 25, while the two ends of the pull ring 27 are rotatably connected to the two ends of the rotating shaft 26.

[0135] In this invention, each reagent chamber of the reagent kit is connected to the reagent flow channel of the rotary valve. A rotating rotor not only drives multiple reagents into the flow channel plate but also drives samples and water into the plate. This not only completes the entire detection process but also thoroughly cleans the internal tubing, improving test accuracy. Furthermore, the kit can hold more reagents, has a longer service life, allows for more frequent testing, requires fewer resources, and the kit can be easily replaced once the reagents are depleted.

[0136] The urine analyzer 100 also includes a control module, which is connected to the micro switch, the drive unit 5, the pump 6 and the detection unit 3. The control module is used to receive signals from the micro switch and the detection unit 3, and can also be used to control the operation of the drive unit 5, the pump 6 and the detection unit 3.

[0137] The pump 6 of the present invention is a plunger pump 6, which is connected to a common flow channel 111 through multiple pipes.

[0138] In the embodiment shown in Figure 28, pump 6 is connected to common flow channel 111 through three pipes, namely first pipe 101, second pipe 102 and third pipe 103, and two three-way valves are installed in the middle of the three pipes. The two three-way valves are water inlet three-way valve 71 and air inlet three-way valve 72.

[0139] One end of the first pipe 101 is connected to the common flow channel 111, while one end of the third pipe 103 is connected to the plunger pump 6.

[0140] The inlet three-way valve 71 is connected to the other end of the first pipe 101, one end of the second pipe 102, and the inlet pipe 104. The inlet pipe 104 is used to receive water from the water tank, which facilitates cleaning the flow channels and detection chamber 32 in the flow channel plate 1.

[0141] The intake three-way valve 72 is connected to the other end of the second pipe 102, the other end of the third pipe 103, and the intake pipe 105. The intake pipe 105 is used for exhaust or intake.

[0142] When a sample needs to be extracted, 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, thereby connecting the common channel 111, the transfer channel 41 and the sample channel 141.

[0143] Simultaneously opening the air inlet three-way valve 72 and the water inlet three-way valve 71 connects the first pipe 101, the second pipe 102, and the third pipe 103. At this time, the first pipe 101, the second pipe 102, the third pipe 103, the common flow channel 111, the transfer flow channel 41, and the sample flow channel 141 are interconnected. Pump 6 extracts air from the common flow channel 111, the transfer flow channel 41, and the sample flow channel 141, creating a negative pressure in the common flow channel 111 and the sample flow channel 141, allowing the sample to enter the common flow channel 111 from the sample collection chamber.

[0144] When extracting reagents, the rotor 4 is rotated, and the rotary valve is switched 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.

[0145] Rotor 4 continues to rotate, aligning the outer end of transfer channel 41 with detection hole 13. At this time, common channel 111, detection channel 131, and detection cavity 32 are interconnected.

[0146] Then, the air inlet three-way valve 72 is closed and the water inlet three-way valve 71 is opened, drawing air from the air inlet pipe 105 into the third pipe 103. Then, the air inlet three-way valve 72 is opened again, connecting the third pipe 103, the second pipe 102, and the first pipe 101, pushing air into the common flow channel 111, and pushing the sample and reagent in the common flow channel 111 into the detection chamber 32.

[0147] The detection chamber 32 of the detection plate 31 is connected to the detection channel 131 through a pipe, and the sample and reagent can flow from the common channel 111 into the detection channel 131 and the detection chamber 32.

[0148] The outer casing 8 is also provided with multiple pipe holes 83, which facilitate the entry of the air inlet pipe 105, water inlet pipe 104, pipe connected to the sample flow channel 141, and sewage discharge pipe into the outer casing 8.

[0149] As a preferred embodiment, the detection plate 31 is also provided with a mixing chamber, which is connected to the detection chamber 32. The width of the mixing chamber is 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.

[0150] The mixing chamber 303 can be configured as a roughly circular cavity or as multiple bends. In the embodiment shown in Figure 20, 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 one end of 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 drain pipe and the other end of the detection chamber 32. The drain pipe is connected to the second mixing bend 34, and the other end is located inside the toilet.

[0151] The sample and reagent 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 1-2 seconds, the pump 6 operates in reverse to draw the sample and reagent in the second mixing bend 34 into the detection chamber 32. This process is repeated multiple times, and the sample and reagent are repeatedly mixed in the first mixing bend 33, the detection chamber and the second mixing bend 34 before finally being detected in the detection chamber 32.

[0152] After testing, pump 6 pushes the sample and reagent in the testing chamber 32 into the second mixing bend 34 and then into the sewage discharge channel, from where it enters the toilet and is discharged.

[0153] The present invention also relates to a control method for a urine analyzer 100, applied to the aforementioned urine analyzer 100, as shown in Figures 27 and 28, comprising the following steps:

[0154] S1: Open the water inlet three-way valve 71 and the air inlet three-way valve 72, and switch the rotary valve to the sample flow channel 141. The pump 6 rotates forward to draw the sample in the sample collection chamber into the transfer flow channel 41.

[0155] When the water inlet three-way valve 71 is opened, the first pipe 101 and the second pipe 102 are connected; while when the air inlet three-way valve 72 is opened, the second pipe 102 and the third pipe 103 are connected.

[0156] S2: Switch the rotary valve to the reagent flow channel 121, and the pump 6 rotates forward and draws the reagent in the reagent chamber 21 into the transfer flow channel 41;

[0157] S3: Switch the rotary valve to the detection channel 131, reverse the pump 6 and push the sample and reagent in the transfer channel 41 into the detection channel 131 and flow into the detection chamber 32;

[0158] S4: The detector detects the sample within the detection channel 131;

[0159] S5: After the test is completed, the inlet three-way valve 71 is closed, the pump 6 rotates forward to draw clean water into the inlet three-way valve 71, then the inlet three-way valve 71 is opened, the pump 6 is reset to push the clean water in the inlet three-way valve 71 into the test channel 131 and the test chamber 32, and then discharged from the test chamber 32.

[0160] In steps S1 and S2, samples and reagents are extracted and introduced into the transfer channel 41, respectively. After step S5, water is drawn from the water inlet pipe 104 into the transfer channel 41 and the detection chamber 32 for cleaning.

[0161] Optionally, before step S2, it is also necessary to determine the number of reagents to be extracted. Based on the number of reagents to be extracted, step S2 is repeated, and each time the rotary valve is switched to a different reagent flow channel 121, different reagents are extracted into the transfer flow channel 41.

[0162] As a preferred embodiment, the flow channel plate 1 is provided with a mixing cavity 303, which is located on the path of the detection flow channel 131 and is connected to the detection flow channel 131.

[0163] When the detection plate 31 is provided with a first mixing bend 33 and a second mixing bend 34, step S3 includes:

[0164] S31: Switch the rotary valve to the detection channel 131, reset the pump 6, close the air inlet three-way valve 72, connect the third pipe and the air inlet pipe 105, the pump 6 rotates forward to draw air into the third pipe, then opens the air inlet three-way valve 72, the pump 6 rotates in reverse to push the sample and reagent in the transfer channel 41 into the detection channel 131, from the detection channel 131 into the first mixing bend 33, and from the first mixing bend 33 into the detection chamber 32; the plunger pump 6, affected by the stroke, can repeatedly draw external air from the air inlet pipe into the transfer channel 41 to push the sample and reagent into the detection channel 131.

[0165] S32: The pump 6 rotates forward for a preset time and then reverses for a preset time, so that the sample and reagent in the detection chamber 32 flow back and forth in the first mixing bend 33, the detection chamber 32 and the second mixing bend 34, and finally stay in the detection chamber 32.

[0166] Optionally, step S5 is followed by step S6: The rotary valve is switched to the sample flow channel 141, and the water inlet three-way valve 71 is closed, connecting the water inlet pipe and the second pipe. The pump 6 rotates forward to draw clean water into the water inlet three-way valve 71, then closes the water inlet three-way valve 71, and the pump 6 resets to push the clean water from the water inlet three-way valve 71 into the first pipe. This process is repeated multiple times. Then, the air inlet three-way valve 72 is closed, connecting the air inlet three-way valve 72 and the third pipe. The pump 6 rotates forward to draw air into the third pipe, then opens the air inlet three-way valve 72 and the water inlet three-way valve 71. The pump 6 rotates in reverse to push the water in the first pipe into the sample flow channel 141 and the sample collection chamber, and then discharges it. The plunger pump 6 needs to draw water into the first pipe multiple times, and due to the stroke, it also needs to draw air into the third pipe multiple times. The air pushes the water drawn into the first pipe into the sample flow channel 141, causing the sample to flow back to the sample collection chamber and be discharged from the sample collection chamber, thus cleaning the sample collection chamber.

[0167] Optionally, step S5 is followed by step S6: the rotary valve is switched to the detection channel 131, and the water inlet three-way valve 71 is closed. The pump 6 rotates forward to draw clean water into the water inlet three-way valve 71, then the water inlet three-way valve 71 is closed, and the pump 6 resets to push the clean water from the water inlet three-way valve 71 into the first pipe. After repeating this process multiple times, the air inlet three-way valve 72 is closed, and the pump 6 rotates forward to draw air into the third pipe. Then, both the air inlet three-way valve 72 and the water inlet three-way valve 71 are opened, connecting the first pipe, the second pipe, and the third pipe. The pump 6 reverses to push the water in the first pipe into the detection channel 131, which flows into the detection chamber 32 from the detection channel 131 and is then discharged. This step is the process for cleaning the detection chamber 32.

[0168] Preferably, before step S1, the method further includes the steps of: opening the air inlet three-way valve 72 and closing the water inlet three-way valve 71, and the pump 6 rotating forward to draw clean water into the water inlet pipe;

[0169] Then, the inlet three-way valve 71 is opened, and the rotary valve is switched to the sample flow channel 141;

[0170] When the intake three-way valve 72 is opened, the pump 6 rotates forward to draw in air. Afterward, the intake three-way valve 72 closes, and the pump 6 resets to discharge air from the intake pipe 105. Then, the intake three-way valve 72 is opened again, and the pump 6 draws in air again until the sample in the sample collection chamber is drawn into the transfer channel 41. The pump 6 needs to draw air multiple times and discharge air from the exhaust pipe to draw the sample in the sample collection chamber into the transfer channel 41.

[0171] Switch the rotary valve to the detection channel 131, close the water inlet three-way valve 71, open the air inlet three-way valve 72, and the pump 6 rotates forward to draw water from the water inlet pipe into the second pipe. Then, open the water inlet three-way valve 71 and reset the pump 6.

[0172] When the air inlet three-way valve 72 is closed, the pump 6 rotates forward to draw air into the third pipe. When the air inlet three-way valve 72 is closed again, the pump 6 resets, pushing the air in the third pipe and the water in the second pipe into the transfer channel 41. Then, it reverses direction to allow the sample and water in the transfer channel 41 to flow from the detection channel 131 into the detection chamber 32, and then out of the detection chamber 32. First, the sample is drawn into the sample channel 141 and the transfer channel 41, and then the sample in the transfer channel 41 is drained from the detection chamber 32 with clean water. A portion of the sample is left in the sample channel 141 to facilitate quantitative sample extraction in the following steps.

[0173] Furthermore, under normal circumstances, it is necessary to test clean water as a reference first. Therefore, after drawing the sample into the sample flow channel 141 and the clean water into the second pipe, it is necessary to close the water inlet three-way valve 71 to draw the water in the second pipe into the third pipe. Then, the rotary valve is switched to the detection flow channel 131, and the water inlet three-way valve 71 and the air inlet three-way valve 72 are opened to push the water in the third pipe into the detection chamber 32 for detection. Of course, due to the stroke limitation of the plunger pump 6, it is necessary to open the air inlet three-way valve 72 multiple times to draw external air into the transfer flow channel 41, first push the clean water into the detection chamber 32 for detection, and then test the sample.

[0174] Optionally, step S6 is followed by step S7: resetting the rotary valve, closing the air inlet three-way valve 72 and the water inlet three-way valve 71, connecting the third pipe and the air inlet pipe, rotating the pump 6 forward to draw air from the air inlet pipe into the third pipe, then opening the air inlet three-way valve 72, resetting the pump 6 to discharge water from the water inlet pipe in reverse, and then closing the air inlet three-way valve 72.

[0175] Optionally, after step S6, if the detection result is abnormal, the control module will restart steps S1 to S6; if the detection result is normal, the next detection item will be performed.

[0176] Preferably, the urine analyzer 100 also includes a warning light.

[0177] If two consecutive test results are abnormal after step S6, the indicator light will issue a warning signal.

[0178] The urine analyzer 100 also includes a sensing module or a fingerprint module. The sensing module or fingerprint module is connected to the control module. After the sensing module senses the operator's corresponding action, it will send an instruction to the control module. Alternatively, after the operator's fingerprint activates the fingerprint module, the fingerprint module will send an instruction to the control module, and the control module will then control the urine analyzer 100 to start.

[0179] Preferably, the microfluidic chip is further provided with a washing channel; the urine analyzer 100 also includes a washing solution and a washing chamber for holding the washing solution;

[0180] After the preset number of cycles from steps S1 to S5, reagent kit 2 needs to be replaced, and the following steps are also included:

[0181] S01: Open the air inlet three-way valve 72, close the water inlet three-way valve 71, and the pump 6 rotates forward to draw clean water into the water inlet pipe. Then close the water inlet three-way valve 71 and the pump 6 rotates forward to draw a certain amount of water from the water inlet pipe 104 into the second pipe.

[0182] S02: Open the inlet three-way valve 71 and switch the rotary valve to the detection flow channel 131. The pump 6 resets and pushes the water from the second pipe into the detection flow channel 131.

[0183] S03: Switch the rotary valve to the washing channel, and the pump 6 rotates forward to draw washing liquid into the transfer channel 41;

[0184] S04: Switch the rotary valve to the detection channel 131, and the pump 6 reverses to push the washing liquid in the transfer channel 41 into the detection channel 131 and mix it with the water in the detection channel 131 to form a diluted washing liquid;

[0185] S05: The pump 6 rotates forward to draw the diluted washing liquid from the detection channel 131 back to the transfer channel 41;

[0186] S06: The rotary valve is switched sequentially to multiple reagent channels 121, and after each switch, the pump 6 reverses to push the diluted washing liquid in the transfer channel 41 into the reagent channel 121 and into the reagent chamber 21;

[0187] S07: Close the inlet three-way valve 71, the pump 6 rotates forward to draw water from the second pipe into the second pipe, then open the inlet three-way valve 71, the pump 6 rotates in reverse to push water from the second pipe into the transfer channel 41;

[0188] S08: The rotary valve is switched sequentially to multiple reagent channels 121, and after each switch, the pump 6 reverses to push the water in the transfer channel 41 into the reagent channel 121 and into the reagent chamber 21.

[0189] First, dilute the water and washing solution, then push them into multiple reagent channels 121 for washing and flow into the reagent chamber 21. Then, rinse the reagent channels 121 with clean water and push them into the reagent chamber 21. In other words, push the washing solution and clean water into the old reagent kit 2. Then, disassemble the old reagent kit 2 and replace it with a new reagent kit 2.

[0190] Optionally, if the detection plate 31 is provided with a first mixing bend 33 and a second mixing bend 34, the clean water and washing liquid can be fully mixed and diluted in the detection chamber 32 and the first mixing bend 33 and the second mixing bend 34. Then, the above steps S02, S04, and S05 are as follows:

[0191] S02: Open the inlet three-way valve 71 and switch the rotary valve to the detection channel 131. The pump 6 resets and pushes the water from the second pipeline into the detection channel 131. The water then enters the first mixing bend 33 from the detection channel 131 and then enters the detection chamber 32.

[0192] S04: The pump 6 reverses to push the washing liquid in the transfer channel 41 into the detection channel 131 and then into the detection chamber 32. Then the pump 6 rotates forward for a preset time and then reverses for a preset time, so that the clean water and washing liquid in the detection chamber 32 flow back and forth in the first mixing bend 33, the detection chamber 32 and the second mixing bend 34, and mix into a diluted washing liquid.

[0193] S05: The pump 6 rotates forward to draw the diluted washing liquid in the detection chamber 32 into the detection channel 131 and then draws it back into the transfer channel 41.

[0194] Preferably, step 08 is followed by step 09: switching the rotary valve to the detection channel 131, closing the inlet three-way valve 71, rotating the pump 6 forward to draw water from the inlet pipe into the second pipe, then opening the inlet three-way valve 71, and resetting the pump 6;

[0195] When the intake three-way valve 72 is closed, the pump 6 rotates forward to draw air into the third pipe. Then, the intake three-way valve 72 is opened, the pump 6 is reset, and this process is repeated several times to draw enough air into the transfer channel 41 and the detection channel 131, and the remaining water is discharged from the detection channel 131.

[0196] If the diluted washing solution in the detection channel 131 or detection chamber 32 is not used up, the remaining diluted washing solution needs to be drained from the detection channel 131. If it is used up, the detection channel 131 can also be cleaned with water.

[0197] As a preferred solution, after steps S1 to S5 are repeated a preset number of times, periodic maintenance is required, which also includes the following steps:

[0198] S001: Open the air inlet three-way valve 72, close the water inlet three-way valve 71, and the pump 6 rotates forward to draw clean water into the water inlet pipe;

[0199] S002: The pump 6 rotates forward to draw a fixed amount of water from the inlet pipe into the second pipe, opens the inlet three-way valve 71, and switches the rotary valve to the detection channel 131. The pump 6 resets to push the water in the second pipe into the detection channel 131.

[0200] S003: Switch the rotary valve to the washing channel, and the pump 6 rotates forward to draw the washing liquid in the washing chamber into the transfer channel 41;

[0201] S004: Switch the rotary valve to the detection channel 131, and the pump 6 reverses to push the washing liquid in the transfer channel 41 into the detection channel 131 and mixes and dilutes it with the water in the detection channel 131 to form a diluted washing liquid;

[0202] S005: The pump 6 rotates forward to draw the diluted washing liquid in the detection channel 131 back to the transfer channel 41;

[0203] S006: Switch the rotary valve to the sample flow channel 141, and reset the pump 6 to push the diluted washing solution of the transfer channel 41 into the sample flow channel 141 and the sample collection chamber;

[0204] S007: Repeat steps S002 to S004, the pump 6 reverses to push the diluted washing liquid in the detection channel 131 into the detection chamber 32;

[0205] S008: After waiting for a preset time, close the air inlet three-way valve 72, and the pump 6 rotates forward to draw air into the third pipe. Then, open the air inlet three-way valve 72. Due to the stroke of the plunger pump 6, air needs to be drawn into the third pipe. Then, switch the rotary valve to the sample flow channel 141. Close the water inlet three-way valve 71, and the pump 6 rotates forward to draw water from the water inlet pipe into the second pipe. Then, open the water inlet three-way valve 71, and the pump 6 resets. Close the air inlet three-way valve 72, and the pump 6 rotates forward to draw air into the third pipe. Then, open the air inlet three-way valve 72 again to draw some air into the third pipe to increase the driving stroke of the plunger pump 6. Then, the pump 6 reverses to push the water through the second pipe into the sample flow channel 141 and discharge it from the sample collection chamber.

[0206] S009: Switch the rotary valve to the detection channel 131; close the water inlet three-way valve 71, the pump 6 rotates forward to draw water from the water inlet pipe into the second pipe, then open the water inlet three-way valve 71 and reset the pump 6; close the air inlet three-way valve 72, the pump 6 rotates forward to draw air into the third pipe, then open the air inlet three-way valve 72, the pump 6 rotates in reverse to push water from the second pipe into the detection channel 131 and discharge it from the detection chamber 32.

[0207] If the detection plate 31 is provided with a first mixing bend 33 and a second mixing bend 34, the reagent and water can be repeatedly diluted and mixed using the first mixing bend 33 and the second mixing bend 34.

[0208] Specifically, in S002, the pump 6 rotates forward to draw a fixed amount of water from the inlet pipe into the second pipe, opens the inlet three-way valve 71, and switches the rotary valve to the detection channel 131. The pump 6 resets and pushes the water in the second pipe from the detection channel 131 into the first mixing bend 33 and then into the detection chamber 32.

[0209] In S004, the pump 6 reverses to push the washing liquid in the transfer channel 41 into the detection channel 131 and then into the detection chamber 32. Then the pump 6 rotates forward for a preset time and then reverses for a preset time, so that the water and reagent in the detection chamber 32 flow back and forth in the first mixing bend 33, the detection chamber 32 and the second mixing bend 34, and mix and dilute into diluted washing liquid.

[0210] In S005, the pump 6 rotates forward to draw the diluted washing liquid in the detection chamber 32 into the detection channel 131, and then draws it back from the detection channel 131 to the transfer channel 41.

[0211] The urine analyzer of this invention, through the cooperation of a rotary valve, two three-way valves, and a plunger pump, can accurately extract samples and reagents into the microfluidic chip. Moreover, the circuit structure is simple; a single plunger pump can extract samples, water, reagents, and air into the microfluidic chip, and can also work with the two three-way valves to complete processes such as detection channel management, channel cleaning, and periodic maintenance. The microfluidic chip's channel plate is tray-mounted, and more reagent channels can be set on it. The reagent kit is installed at the top of the rotary valve, allowing for more reagent chambers and the holding of more reagents, thereby delaying the detection time.

[0212] The reagent kit and the microfluidic chip are detachably connected via pins, eliminating the need for additional tubing, further reducing contamination issues, and facilitating the disassembly and assembly of the reagent kit.

[0213] In another embodiment, the urine analyzer 100 also includes the aforementioned rotary valve, reagent kit 2, detection component 3, and plunger pump 6. The difference is that this embodiment does not require a three-way valve; instead, an air inlet and an air channel are provided on the flow channel plate of the rotary valve. The air inlet is located on the circumference formed by multiple reagent holes and is formed by a recess in the bottom surface of the flow channel plate. The inner end of the air channel communicates with the air inlet, and the outer end opens towards the outside of the flow channel plate, used to draw air into the rotary valve. The air channel and reagent channel are implemented in the same way, and the transfer channel 41 can switch with the rotary valve and communicate with the air channel.

[0214] Furthermore, in this embodiment, the common flow channel 111 is connected to the clean water collection chamber via a pipe, which includes a first section and a second section. The two ends of the first section are connected to the common flow channel 111 and the outlet of the pump 6, while the two ends of the second section are connected to the inlet of the pump 6 and the clean water collection chamber containing clean water. The first section is equipped with a control valve, defined as the first valve. The second section is equipped with another valve, defined as the second valve.

[0215] By controlling the first and second valves, water from the clean water collection chamber can flow into the common channel and clean each pipe.

[0216] Furthermore, the urine analyzer 100 of the present invention can be used for routine urine tests, such as 14 ascorbic acid tests, including vitamin 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 use more items for testing, a multi-ring reagent well group can also be set on the flow channel plate.

[0217] In one embodiment, as shown in Figures 22-26, the flow channel plate 1 is provided with a plurality of first reagent holes 122 and a plurality of second reagent holes 123, which are arranged at intervals around the middle flow channel and respectively penetrate the flow channel plate 1.

[0218] The top surface of the flow channel plate 1 is provided with a first reagent flow channel 124 communicating with the first reagent hole 122 and a second reagent flow channel 125 communicating with the second reagent hole 123. The first reagent flow channel 124 and the second reagent flow channel 125 both extend radially. The multiple first reagent flow channels 124 and the multiple second reagent flow channels 125 are located on different diameters, so that the outer ends of the multiple first reagent flow channels 124 and the outer ends of the multiple second reagent flow channels 125 will not flow into the transfer flow channel 41 at the same time.

[0219] The outer ends of the plurality of first reagent channels 124 diverge radially outward to near the edge of the channel plate 1, while the outer ends of the plurality of second reagent channels 125 also diverge radially outward. Preferably, the plurality of first reagent holes 122 are evenly spaced circumferentially, or the plurality of second reagent holes 123 are also evenly spaced circumferentially. Alternatively, the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are arranged evenly spaced.

[0220] Preferably, the plurality of first reagent channels 124 and the plurality of second reagent channels 125 are also arranged at uniform intervals along the circumference.

[0221] The outer ends of the first reagent channel 124 and the second reagent channel 125 are respectively aligned with each reagent chamber of the reagent kit 2. That is, the reagent kit 2 is also provided with multiple first reagent chambers 211 and multiple second reagent chambers 212. The outer ends of the multiple first reagent chambers 211 and multiple first reagent channels 124 are aligned and connected one by one, and the outer ends of the multiple second reagent chambers 212 and multiple second reagent channels 125 are aligned and connected one by one. In other words, the multiple first reagent chambers 211 and multiple second reagent chambers 212 are also located on different circumferences.

[0222] 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, some of the second sealing holes 441 are aligned with and connected to the outer ends of multiple first reagent flow channels 124, and other parts of the second sealing holes 441 are aligned with and connected to the outer ends of multiple second reagent flow channels 125.

[0223] The positions of the second circumferential hole 451 on the second support plate 45, the multiple pins 46, the clearance hole 471 on the connecting plate 47, and the third sealing hole 481 of the third sealing gasket 48 need to be set according to the position of the second sealing hole 441, which will not be described again.

[0224] In another embodiment, a plurality of first reagent holes 122 and a plurality of second reagent holes 123 are also arranged at intervals along a 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 distance between the plurality of second reagent holes 123 and the central flow channel 11 can be less than or greater than the distance between the plurality of first reagent holes 122 and the central flow channel 11.

[0225] The reagent kit 2 may also be provided with multiple first reagent chambers 211 and multiple second reagent chambers 212, wherein the multiple first reagent chambers 211 and multiple first reagent holes 122 are respectively connected, and the multiple second reagent chambers 212 and multiple second reagent holes 123 are respectively connected.

[0226] 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 being respectively connected to a plurality of first reagent holes 122, and the outer ends being radially diverging 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 to communicate with a plurality of first reagent cavities 211.

[0227] Optionally, the top surface of the flow channel plate 1 is provided with a plurality of second reagent flow channels 125, the inner ends of the plurality of second reagent flow channels 125 are respectively connected to a plurality of second reagent holes 123, and the outer ends radiate outward and are connected to a plurality of second reagent chambers 212.

[0228] As a preferred embodiment, the plurality of first reagent holes 122 and the plurality of second reagent holes 123 are evenly spaced, which facilitates setting the rotation angle of the rotor 4 according to the spacing between the plurality of reagent holes, and controlling the rotation of the rotor 4. Of course, in some embodiments, the spacing between the plurality of first reagent holes 122 and the plurality of second reagent holes 123 can also be randomly set.

[0229] The transfer channel 41 on rotor 4 is a channel formed by a recess in the top surface of rotor 4. The outer end of the transfer channel 41 can communicate with multiple first reagent holes 122, and the middle part of the transfer channel 41 can also communicate with any one of the second reagent holes 123. With this design, more reagent chambers can be arranged in a limited space, and more items can be detected.

[0230] A sealing membrane 28 is also provided between the connecting plate 47 and the third sealing gasket 48. Before the reagent chamber is used, the sealing membrane 28 is not punctured, sealing the top opening of the reagent chamber. After the reagent kit 2 is installed onto the urine analyzer 100, the pin 46 of the urine analyzer 100 punctures the sealing membrane 28 and inserts it into the reagent chamber. The sealing membrane 28 can be a plastic film or a thin film to prevent liquid leakage.

[0231] Preferably, the urine analyzer 100 further includes a leak-proof component 29 disposed in the reagent chamber to prevent reagent from leaking out from the top opening of the reagent chamber.

[0232] Furthermore, as shown in Figure 23, the leak-proof component 29 has a through hole 291. The leak-proof component 29 is slidably disposed along the cavity wall of the reagent cavity, and the through hole 291 extends along the extension direction of the reagent cavity, that is, it extends in the vertical direction.

[0233] The reagent chamber also contains liquid sealing oil, located at the top of the reagent, used to seal the reagent opening. A leak-proof component 29 is inserted into the liquid sealing oil, and the diameter of the through hole 291 of the leak-proof component 29 is 4mm-5mm. Optionally, the diameter of the through hole 291 of the leak-proof component 29 is 4.5mm, 4.7mm, or 4.8mm. During use, the reagent is injected into the reagent chamber through the top inlet, followed by the injection of liquid sealing oil. Simultaneously, the leak-proof component 29 is inserted into the liquid sealing oil. This ensures sufficient storage space within the reagent chamber while reducing the inner diameter of the reagent chamber towards the top inlet area, preventing reagent leakage from the top opening during transport or use of the urine analyzer 100. The outer diameter of the leak-proof component 29 is 0.5mm-2mm smaller than the inner diameter of the reagent chamber, allowing it to descend with the liquid level after reagent use.

[0234] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0235] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0236] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A rotary cut valve characterized by, The rotary cutting valve includes: Flow channel plate, wherein the flow channel plate is provided with: A central flow channel is formed by the bottom surface of the flow channel plate being recessed to a predetermined depth towards the top; Multiple reagent holes are spaced apart along a circumference formed with the central flow channel as the center and penetrate the flow channel plate; Sample hole, the sample hole being located on the circumference and formed by a recess in the bottom surface of the flow channel plate; A detection hole, which is located on the circumference and is formed by a recess in the bottom surface of the flow channel plate; A common flow channel, the inner end of which is connected to the central flow channel; A sample flow channel, the inner end of which communicates with the sample orifice; and A detection channel, the inner end of which is connected to the detection hole; The rotor is rotatably connected to the bottom surface of the flow channel plate and has a transfer flow channel. The center of the rotor is aligned with the center flow channel. The inner end of the transfer flow channel is located at the center of the rotor, and the outer end is located on the circumference.

2. The rotary cut valve of claim 1, wherein, The rotary valve also includes: A conduit, which is connected to the common flow channel; A pump, which is connected to the pipeline.

3. The rotary cut valve of claim 1, wherein, The rotary valve also includes: plunger pump; Inlet three-way valve; Intake three-way valve; The first pipe has one end connected to the common flow channel and the other end connected to the inlet three-way valve; The second pipe has one end connected to the water inlet three-way valve and the other end connected to the air inlet three-way valve; The third pipe has one end connected to the intake three-way valve and the other end connected to the plunger pump; Water inlet pipe, the water inlet pipe being connected to the water inlet three-way valve; and An intake pipe is provided, which is connected to the intake three-way valve.

4. The rotary cut valve of claim 1, wherein, The rotary valve also includes: A first sealing gasket, stacked on the bottom surface of the flow channel plate, has a first central hole and multiple first sealing holes. The first central hole communicates with the central flow channel, and the multiple first sealing holes are respectively aligned with and communicate with the sample hole, the detection hole, and the multiple reagent holes; and A first support plate is located between the first sealing gasket and the rotor and is provided with a second central hole and a plurality of first circumferential holes. The second central hole communicates with the first central hole and the inner end of the transfer channel. The plurality of first circumferential holes and the plurality of first sealing holes are aligned and communicate with each other.

5. The rotary cut valve of claim 4, wherein, The bottom surface of the first sealing gasket is provided with a plurality of first bottom sealing rings, which are respectively arranged around the first central hole and the plurality of first sealing holes.

6. The rotary cut valve of claim 4, wherein, The top surface of the first sealing gasket is provided with a plurality of first top sealing rings, which are respectively arranged around the first central hole and the plurality of first sealing holes.

7. The rotary cut valve of claim 4, wherein, The bottom surface of the flow channel plate is provided with a receiving groove, and the first sealing gasket and the first support plate are located in the receiving groove.

8. The rotary cut valve of claim 7, wherein, The side wall of the receiving groove is provided with a limiting groove; The first sealing gasket and the first support plate are respectively provided with limiting blocks located in the limiting groove on their radial outer sides.

9. The rotary cut valve of claim 1, wherein, The top surface of the flow channel plate is provided with multiple reagent flow channels, the inner ends of the multiple reagent flow channels are respectively connected to multiple reagent holes, and the outer ends diverge radially outward.

10. The rotary cut valve of claim 9, wherein, The rotary valve also includes: A second sealing gasket, stacked on the top surface of the flow channel plate and having multiple second sealing holes, wherein the multiple second sealing holes are respectively aligned with and communicate with the outer ends of the multiple reagent flow channels; and The second support plate is located on the top surface of the plurality of second sealing gaskets and is provided with a plurality of second circumferential holes, the plurality of second circumferential holes being aligned with and connected to the plurality of second sealing holes respectively.

11. The rotary cut valve of claim 10, wherein, The bottom surface of the second sealing gasket is provided with a plurality of second bottom sealing rings, and the projections of the plurality of bottom sealing rings along the vertical direction are respectively located outside the projections of the plurality of reagent flow channels along the vertical direction.

12. The rotary cut valve of claim 11, wherein, The top surface of the second sealing gasket is provided with a plurality of second top sealing rings, which are respectively arranged around a plurality of second sealing holes.

13. The rotary cut valve of claim 12, wherein, The top surface of the second sealing gasket is provided with a plurality of sealing rings, which are respectively arranged around a plurality of second sealing holes, and the outer periphery of each sealing ring overlaps with the radial outer side of each second top sealing ring, and the inner periphery is located inside the second top sealing ring.

14. The rotary cut valve of claim 13, wherein, The projections of the multiple second top sealing rings along the vertical direction overlap with the projections of the multiple second bottom sealing rings along the vertical direction.

15. The rotary cut valve of claim 10, wherein, The top surface of the second support plate is also provided with a plurality of threaded holes, which are respectively connected to a plurality of second circumferential holes; The rotary valve also includes a plurality of pins, the bottom ends of which are located in a plurality of threaded holes and threadedly connected to the second support plate. The bottom ends of the plurality of pins are respectively connected to a plurality of second circumferential holes, and the top ends are provided with pin tips.

16. The rotary cut valve of claim 10, wherein, The top surface of the second support plate is provided with a concave ring, which extends circumferentially along the second support plate and is located at the edge of the second support plate; The rotary valve also includes a metal ring located within the concave ring.

17. The rotary cut valve of claim 9, wherein, The multiple reagent channels extend radially and have different lengths.

18. The rotary cut valve of claim 17, wherein, The outer ends of some of the reagent flow channels are on the same circumference, while the outer ends of other reagent flow channels are on a different circumference.

19. The rotary valve according to claim 1, characterized in that, The outer end of the common flow channel and / or the inner end of the sample flow channel and / or the outer end of the detection flow channel are located radially outside the flow channel plate.

20. The rotary valve according to claim 2, characterized in that, The flow channel plate is also provided with an air inlet and an air flow channel. The air inlet is located on the circumference and is formed by a recess in the bottom surface of the flow channel plate. The inner end of the air flow channel is connected to the air inlet, and the outer end is open to the outside of the flow channel plate. One end of the pipe is connected to the common flow channel, and the other end is connected to the clean water collection chamber where clean water is placed.

21. A urine analyzer, characterized in that, The urine analyzer includes: The rotary valve as described in claim 1; The reagent kit has multiple reagent chambers, each of which is connected to a plurality of reagent orifices. A sample collector, wherein the sample collector is provided with a sample collection cavity, and the sample collection cavity is connected to the outer end of the sample flow channel; The detection plate has a detection cavity that is connected to the detection flow channel.

22. A toilet, characterized in that, The toilet includes the urine analyzer as described in claim 21.

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