Liquid detection device

Abstract

The utility model provides a liquid detection device, which relates to the technical field of body fluid sample testing devices, including a detection mechanism, a cup body and a buffer mechanism; the detection mechanism is located in a detection cavity, realizing direct combination of the detection mechanism and the cup body, and there is no need to perform pipetting operations for sampling and detection; the buffer mechanism contains a liquid to be tested, and the buffer mechanism is connected to the detection cavity through a flow hole, and the buffer mechanism flows the liquid to be tested into the detection cavity through the flow hole, so that the end of the detection mechanism contacts the liquid to be tested that has spread into the detection cavity for detection; the buffer mechanism is used to buffer the liquid to be tested during the sampling process, so that the liquid to be tested slowly flows into the detection cavity, thereby alleviating the technical problems existing in the prior art such as inconvenient body fluid transportation, cumbersome operation steps, easy misoperation, and instantaneous liquid impact that may cause "flooding" or undesirable phenomena such as failure to run the liquid, resulting in test failure.

Description

Technical Field

[0001] The utility model relates to the technical field of body fluid sample testing devices, in particular to a liquid testing device. Background Art

[0002] With the popularization of in vitro diagnostic products, people's demand for in vitro diagnostic products tends to be diversified and simplified. Urine examination is a medical detection method, including routine urine analysis. Urinalysis usually uses multiple test strips to quickly screen and analyze urine, that is, routine urine analysis. The test strip method is a simple and rapid urine screening method. At present, the routine urine test strips check items include pH, protein, occult blood, specific gravity, glucose, ketone bodies, urobilinogen, nitrates, white blood cells, and some test strips also integrate bilirubin and vitamin C; urine examination is of great value for clinical diagnosis, judgment of efficacy and prognosis. Due to different urine examination items, the requirements and processing of urine specimens are also different.

[0003] In the prior art, instant samplers can facilitate users to test urine by themselves; the sampler includes a urine cup, a folding tube and a test tube. The bottom of the urine cup is directly connected to the folding tube, which is easy to leave urine residue in the folding tube, which is unhygienic; at the same time, the connection between the folding tube and the test tube and the transportation of urine are inconvenient and complicated to operate. In the routine urine test, the test tube has a low liquid level due to the diameter of the tube, and the test paper or other equipment cannot directly penetrate into the test tube for testing, and needs to be transferred to other instruments with small tube diameters, resulting in cumbersome operating steps and easy misoperation, resulting in test failure; in addition, when the sampled liquid directly impacts the detection mechanism, due to the instantaneous impact of the liquid during sample addition, the detection mechanism may also impact and cause "flooding" (flooding) or failure to run the strip and other undesirable phenomena. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid detection device to alleviate the technical problems existing in the prior art, such as inconvenient body fluid transportation, complicated operation steps, easy misoperation, and instantaneous liquid impact that may cause "flooding" or failure to run, resulting in test failure.

[0005] The utility model provides a liquid detection device, comprising: a detection mechanism, a cup body and a buffer mechanism;

[0006] The buffer mechanism is located inside the cup body, and a detection cavity is formed between the buffer mechanism and the inner wall of the cup body. The detection mechanism is located in the detection cavity, and the detection mechanism is in contact with the inner wall of the cup body.

[0007] The buffer mechanism is used to accommodate the liquid to be tested. A flow hole is provided at one end of the buffer mechanism close to the bottom wall of the cup body. The buffer mechanism is connected to the detection cavity through the flow hole. The buffer mechanism is used to allow the liquid to be tested to flow into the detection cavity through the flow hole, so that the end of the detection mechanism can contact and detect the liquid to be tested that has overflowed into the detection cavity.

[0008] In a preferred embodiment of the utility model, the detection mechanism includes a test strip fixing mechanism and a test strip;

[0009] The test strip fixing mechanism is provided with a test strip fixing groove, one end of the test strip extends into the test strip fixing groove, and the test strip is clamped and fixed to the test strip fixing mechanism through the test strip fixing groove, and the other end of the test strip extends out of the test strip fixing groove so as to be able to contact the liquid to be tested in the detection chamber.

[0010] In a preferred embodiment of the present invention, a plurality of the test strip fixing grooves are provided, and the plurality of the test strip fixing grooves are arranged at intervals along the circumferential direction of the cup body, and at least one test strip is installed in each of the test strip fixing grooves.

[0011] In a preferred embodiment of the utility model, a limiting protrusion is provided on the side wall of the cup body, and two limiting protrusions are provided. The two limiting protrusions are arranged at intervals along the circumferential direction of the cup body, and the test strip fixing mechanism is located between the two limiting protrusions, and the two sides of the test strip fixing mechanism are respectively clamped with the two limiting protrusions.

[0012] In a preferred embodiment of the present invention, one end of the buffer mechanism having a flow hole has a first distance from the bottom wall of the cup body, the test strip extends out of the test strip fixing groove and abuts against the bottom wall of the cup body, and the end of the test strip fixing groove has a second distance from the bottom wall of the cup body, and the first distance is less than or equal to the second distance.

[0013] In a preferred embodiment of the utility model, the buffer mechanism includes a buffer cup body and an annular support;

[0014] The cup body is provided with an annular step, the annular support is arranged in an annular manner along the circumferential direction of the buffer cup body, and the annular support is connected to the buffer cup body, the buffer cup body is sealedly connected to the annular step through the annular support, and the buffer cup body is suspended in the cup body.

[0015] In a preferred embodiment of the present utility model, the buffer mechanism further includes a buffer protrusion;

[0016] The buffer protrusion is arranged in a ring shape along one end of the flow hole away from the bottom wall of the cup body, and the liquid to be tested in the buffer cup body is used to flow over the buffer protrusion into the detection cavity.

[0017] In a preferred embodiment of the utility model, a cup cover is also included;

[0018] The cup body is arranged with an opening, and the cup cover is sealedly connected to the opening of the cup body.

[0019] In a preferred embodiment of the utility model, it also includes a columnar structure and a blocking structure; the columnar structure is connected to the cup cover;

[0020] The blocking structure includes a blocking plug, which is inserted into the circulation hole, and the columnar structure is arranged corresponding to the blocking plug, and the columnar structure is used to squeeze the blocking plug along with the cup cover so that the blocking plug falls into the detection cavity, so that the buffer cup body and the detection cavity are connected through the circulation hole;

[0021] Alternatively, the blocking structure includes a blocking layer, which is sealed and adhered to the circulation hole, and the columnar structure is arranged corresponding to the blocking layer. The columnar structure is used to penetrate the blocking layer along with the cup cover to connect the buffer cup body and the detection cavity through the circulation hole.

[0022] In a preferred embodiment of the present invention, the position of the cup body corresponding to the detection mechanism is made of transparent material.

[0023] The utility model provides a liquid detection device, comprising: a detection mechanism, a cup body and a buffer mechanism; the buffer mechanism is located inside the cup body, and a detection cavity is formed between the buffer mechanism and the inner wall of the cup body, the detection mechanism is located in the detection cavity, and the detection mechanism is in contact with the inner wall of the cup body, thereby realizing direct combination of the detection mechanism and the cup body, and there is no need to perform pipetting operations for sampling and detection; the buffer mechanism contains a liquid to be detected, and a flow hole is provided at one end of the buffer mechanism close to the bottom wall of the cup body, the buffer mechanism is connected with the detection cavity through the flow hole, and the buffer mechanism flows the liquid to be detected into the detection cavity through the flow hole, so that the end of the detection mechanism contacts the liquid to be detected that overflows into the detection cavity for detection; the buffer mechanism is used to buffer the liquid to be detected during the sampling process, so that the liquid to be detected slowly flows into the detection cavity, thereby alleviating the technical problems existing in the prior art such as inconvenient body fluid transportation, cumbersome operation steps, easy misoperation, and instantaneous liquid impact that may cause "flooding" or undesirable phenomenon of not running the liquid, resulting in test failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the appearance structure of a liquid detection device provided in an embodiment of the utility model;

[0026] Figure 2 A schematic cross-sectional view of a liquid detection device provided by an embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the structure inside the cup body of the liquid detection device provided by an embodiment of the utility model;

[0028] Figure 4 A schematic structural diagram of a buffer mechanism of a liquid detection device provided in an embodiment of the utility model.

[0029] Icons: 100-detection mechanism; 110-test strip fixing mechanism; 111-test strip fixing groove; 120-test strip; 200-cup body; 210-annular step; 220-limiting protrusion; 300-buffer mechanism; 310-buffer cup body; 311-circulation hole; 320-annular support; 330-buffer protrusion; 400-cup cover; 500-columnar structure. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1-Figure 4As shown, a liquid detection device provided in this embodiment includes: a detection mechanism 100, a cup body 200 and a buffer mechanism 300; the buffer mechanism 300 is located inside the cup body 200, and a detection cavity is formed between the buffer mechanism 300 and the inner wall of the cup body 200, the detection mechanism 100 is located in the detection cavity, and the detection mechanism 100 is in contact with the inner wall of the cup body 200; the buffer mechanism 300 is used to accommodate the liquid to be tested, and a flow hole 311 is provided at one end of the buffer mechanism 300 close to the bottom wall of the cup body 200, the buffer mechanism 300 is connected with the detection cavity through the flow hole 311, and the buffer mechanism 300 is used to flow the liquid to be tested into the detection cavity through the flow hole 311, so that the end of the detection mechanism 100 contacts and detects the liquid to be tested that has spread into the detection cavity.

[0032] It should be noted that the liquid detection device provided in this embodiment can sample, collect and test the liquid to be tested separately. Specifically, the buffer mechanism 300 serves as a sampling structure for the liquid to be tested, and the liquid to be tested can be accommodated inside the buffer mechanism 300, and the buffer mechanism 300 is arranged inside the cup body 200, that is, the cup body 200 serves as an integral installation structure of the liquid to be tested and the buffer mechanism 300, and a detection cavity is provided between the cup body 200 and the buffer mechanism 300, and the detection mechanism 100 is installed inside the detection cavity, that is, when the sampling of the liquid to be tested is completed inside the buffer mechanism 300, After sampling, the liquid to be tested will slowly flow into the detection chamber through the circulation hole 311. The buffer mechanism 300 can prevent the liquid to be tested from directly impacting the detection chamber. At the same time, since the circulation hole 311 is close to the bottom wall of the cup body 200, when the liquid to be tested inside the buffer mechanism 300 enters the detection chamber until its height is equal to that of the circulation hole 311, the liquid to be tested inside the buffer mechanism 300 cannot continue to flow into the detection chamber due to the effect of atmospheric pressure, thereby ensuring that the liquid level inside the detection chamber is controlled and avoiding the phenomenon of "flooding" or "not running".

[0033] In a preferred embodiment of the present invention, the position of the cup body 200 corresponding to the detection mechanism 100 is made of transparent material.

[0034] In this embodiment, the cup body 200 forms a transparent structure corresponding to the position of the detection mechanism 100, so as to facilitate observation of the detection results obtained by the detection mechanism 100.

[0035] The liquid detection device provided in this embodiment includes: a detection mechanism 100, a cup body 200 and a buffer mechanism 300; the buffer mechanism 300 is located inside the cup body 200, and a detection cavity is formed between the buffer mechanism 300 and the inner wall of the cup body 200, the detection mechanism 100 is located in the detection cavity, and the detection mechanism 100 is in contact with the inner wall of the cup body 200, so that the detection mechanism 100 and the cup body 200 are directly combined, and there is no need to perform pipetting operations for sampling and detection. The buffer mechanism 300 contains the liquid to be tested, and a flow hole 311 is opened at one end of the buffer mechanism 300 close to the bottom wall of the cup body 200, and the buffer The mechanism 300 is connected to the detection cavity through the flow hole 311, and the buffer mechanism 300 allows the liquid to flow into the detection cavity through the flow hole 311, so that the end of the detection mechanism 100 contacts and detects the liquid to be tested that has spread into the detection cavity; the buffer mechanism 300 is used to buffer the liquid to be tested during the sampling process, so that the liquid to be tested slowly flows into the detection cavity, which alleviates the technical problems existing in the prior art such as inconvenient body fluid transportation, cumbersome operating steps, easy misoperation, and instantaneous liquid impact that may cause "flooding" or non-running of the bar, resulting in test failure.

[0036] On the basis of the above embodiments, further, in a preferred embodiment of the utility model, the detection mechanism 100 includes a test strip fixing mechanism 110 and a test strip 120; the test strip fixing mechanism 110 is provided with a test strip fixing groove 111, one end of the test strip 120 extends into the test strip fixing groove 111, and the test strip 120 is clamped and fixed to the test strip fixing mechanism 110 through the test strip fixing groove 111, and the other end of the test strip 120 extends out of the test strip fixing groove 111 so as to be able to contact the liquid to be tested in the detection chamber.

[0037] In this embodiment, the test strip fixing mechanism 110 can be connected to the inner wall of the cup body 200 by snapping or bonding. The test strip fixing mechanism 110 is provided with a test strip fixing groove 111 along the axial direction of the cup body 200. The test strip fixing groove 111 is opened near the bottom of the cup body 200, that is, when the test strip fixing mechanism 110 is fixed to the test strip 120 through the test strip fixing groove 111, the end of the test strip 120 extends out of the test strip fixing groove 111, so that it can react with the liquid to be tested entering the detection cavity through the end, thereby ensuring the contact reaction detection of the test strip 120.

[0038] It should be noted that the test strip 120 can have various forms, such as immunological or chemical test forms, for detecting analytes in samples, such as drugs or related metabolites indicating physical conditions. A test strip 120 can use multiple materials for liquid transfer; one material of the test strip 120 can be superimposed on another material of the test strip 120, for example, filter paper is superimposed on nitrocellulose; or, an area of ​​the test strip 120 containing at least one material is located behind another area containing at least one different material; the test strip 120 can achieve feedback by adding a solution of a substance that generates a signal to the surface of the application area or immersing one or more materials in a signal solution; since the test strip 120 can adopt the biochemical strip in the prior art, the material of the test strip 120 is not limited here.

[0039] In a preferred embodiment of the present invention, a plurality of test strip fixing grooves 111 are provided, and the plurality of test strip fixing grooves 111 are arranged at intervals along the circumferential direction of the cup body 200 , and at least one test strip 120 is installed in each test strip fixing groove 111 .

[0040] In this embodiment, different numbers of test strips 120 can be provided for testing different liquids to be tested. When multiple test strips 120 are required for testing at the same time, the test strip fixing mechanism 110 is extended along the circumferential direction of the cup body 200, and multiple test strip fixing grooves 111 are arranged at intervals along the surface of the test strip fixing mechanism 110. A test strip 120 is provided in each test strip fixing groove 111, thereby ensuring the installation and fixation of multiple test strips 120.

[0041] In a preferred embodiment of the utility model, a limiting protrusion 220 is provided on the side wall of the cup body 200, and two limiting protrusions 220 are provided. The two limiting protrusions 220 are arranged at intervals along the circumferential direction of the cup body 200, and the test strip fixing mechanism 110 is located between the two limiting protrusions 220, and the two sides of the test strip fixing mechanism 110 are respectively engaged with the two limiting protrusions 220.

[0042] In this embodiment, since the test strip fixing mechanism 110 is extended along the circumferential direction of the cup body 200, in order to ensure that an abutment limit is formed at the end of the test strip fixing mechanism 110, two limit protrusions 220 are provided on the side wall of the cup body 200 corresponding to the extension length of the test strip fixing mechanism 110. The two limit protrusions 220 can just form an abutment limit with the two ends of the extension direction of the test strip fixing mechanism 110, thereby ensuring the stability of the installation of the test strip fixing mechanism 110 and the cup body 200.

[0043] Optionally, the limiting protrusion 220 has reinforcing ribs corresponding to the buffer mechanism 300 , and the limiting protrusion 220 is abutted and fixed with the inner wall of the buffer mechanism 300 through the reinforcing ribs to ensure the stability of the buffer mechanism 300 in the cup body 200 .

[0044] In a preferred embodiment of the present invention, the buffer mechanism 300 has one end of the flow hole 311 which has a first distance from the bottom wall of the cup body 200, the test strip 120 extends out of the test strip fixing groove 111 and abuts against the bottom wall of the cup body 200, and the end of the test strip fixing groove 111 has a second distance from the bottom wall of the cup body 200, and the first distance is less than or equal to the second distance.

[0045] In this embodiment, in order to ensure that the end of the test strip 120 is compatible with the height of the liquid to be tested, the height of the buffer mechanism 300 and the bottom wall of the cup body 200 is controlled, that is, the height of the flow hole 311 from the bottom wall of the cup body 200 is controlled, so that when the flow hole 311 is used to transport the liquid to be tested to the detection chamber, the liquid to be tested will not continue to rise due to the force of atmospheric pressure after rising to the lower plane of the flow hole 311, thereby ensuring the height range of the liquid to be tested in the detection chamber, so as to ensure that after the test strip 120 is able to contact and react with the liquid to be tested, the height of the liquid to be tested in the detection chamber can be avoided to be higher than the detection height of the test strip 120, thereby avoiding the possibility of "no running of the strip".

[0046] In a preferred embodiment of the utility model, the buffer mechanism 300 includes a buffer cup body 310 and an annular support 320; an annular step 210 is provided on the cup body 200, the annular support 320 is arranged in a ring along the circumferential direction of the buffer cup body 310, and the annular support 320 is connected to the buffer cup body 310, the buffer cup body 310 is sealedly connected to the annular step 210 through the annular support 320, and the buffer cup body 310 is suspended in the cup body 200.

[0047] In this embodiment, the annular step 210 is located at one end of the cup body 200 away from the bottom wall, the diameter of the buffer cup body 310 is smaller than the diameter of the cup body 200, and the annular support 320 can be adapted to the annular step 210, that is, the annular support 320 can provide an annular abutment to the annular step 210. Optionally, the annular support 320 and the annular step 210 can be welded or bonded to ensure the stability of the buffer cup body 310 inside the cup body 200; and an annular seal is formed between the annular support 320 and the annular step 210 to ensure that the cup body 200 and the buffer cup body 310 are sealed and airtight.

[0048] In a preferred embodiment of the present invention, the buffer mechanism 300 further includes a buffer protrusion 330 ; the buffer protrusion 330 is arranged in a ring shape along the circumferential direction of the flow hole 311 , and the liquid to be tested in the buffer cup 310 is used to flow over the buffer protrusion 330 into the detection cavity.

[0049] In this embodiment, the buffer protrusion 330 can increase the height range of the flow hole 311 in the buffer cup body 310, so that after a period of buffering and stillness, the fluid to be tested sampled in the buffer cup body 310 can gradually increase its liquid level in the buffer cup body 310 and reach the height range of the buffer protrusion 330 before it can pass through the buffer protrusion 330 and enter the flow hole 311 for transportation, thereby ensuring the buffering of the fluid to be tested during the sampling process and slowing down the flow speed of the fluid to be tested.

[0050] In a preferred embodiment of the present invention, a cup cover 400 is further included; the cup body 200 is arranged with an opening, and the cup cover 400 is sealedly connected to the opening of the cup body 200 .

[0051] In this embodiment, the cup cover 400 has a sealing groove at one end facing the cup body 200, the cup cover 400 is docked with the cup body 200, and the sealing groove is annularly sealed along the side wall of the cup body 200; the cup cover 400 and the cup body 200 can be docked and connected by a threaded connection, and at the same time, the cup cover 400 ensures the sealing of the opening of the cup body 200 through the sealing groove, wherein the sealing groove can be formed by a sealing protrusion and the side wall of the cup body 200, and the cup cover 400 and the cup body 200 that are sealed and connected can ensure that when the cup body 200 is inverted, the liquid to be tested in the cup body 200 will not flow out.

[0052] In a preferred embodiment of the utility model, it also includes a columnar structure 500 and a sealing structure; the columnar structure 500 is connected to the cup cover 400; the sealing structure includes a sealing plug, which is inserted into the circulation hole 311, and the columnar structure 500 is arranged correspondingly to the sealing plug, and the columnar structure 500 is used to squeeze the sealing plug as the cup cover 400 squeezes it so that the sealing plug falls into the detection cavity, so that the buffer cup body 310 and the detection cavity are connected through the circulation hole 311; or, the sealing structure includes a sealing layer, the sealing layer is sealed and fitted on the circulation hole 311, and the columnar structure 500 is arranged correspondingly to the sealing layer, and the columnar structure 500 is used to penetrate the sealing layer as the cup cover 400, so that the buffer cup body 310 and the detection cavity are connected through the circulation hole 311.

[0053] Optionally, the sealing layer can be made of heat-sealed aluminum foil or plastic film, and the sealing plug can be made of a rubber plug or a plastic plug. The sealing structure can ensure that the detection cavity and the buffer cup body 310 are isolated during the sampling process of the buffer cup body 310, thereby ensuring the stability of separate sampling; further, when the sampling is completed, the cup cover 400 is buckled on the cup body 200, and the end of the columnar structure 500 away from the cup cover 400 has a pointed end, and the pointed end of the columnar structure 500 can be correspondingly inserted into the sealing layer to ensure that the detection cavity is isolated from the buffer cup body 310 during the detection process. The liquid to be tested in the buffer cup body 310 enters the detection cavity through the flow hole 311 of the blocking layer punctured by the columnar structure 500, or the tip of the columnar structure 500 can correspond to the sealing plug. When the columnar structure 500 is continuously squeezed, the sealing plug will be separated from the flow hole 311, and the sealing plug will fall into the detection cavity, ensuring that the liquid to be tested in the buffer cup body 310 enters the detection cavity through the flow hole 311 that is blocked by the columnar structure 500 during the detection process, thereby realizing the flow of the liquid to be tested during the detection process.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A liquid detection device, characterized in that: include: A detection mechanism (100), a cup body (200) and a buffer mechanism (300); The buffer mechanism (300) is located inside the cup body (200), and a detection cavity is formed between the buffer mechanism (300) and the inner wall of the cup body (200); the detection mechanism (100) is located in the detection cavity, and the detection mechanism (100) is in contact with the inner wall of the cup body (200); The buffer mechanism (300) is used to accommodate the liquid to be tested. A flow hole (311) is provided at one end of the buffer mechanism (300) close to the bottom wall of the cup body (200). The buffer mechanism (300) is connected to the detection cavity through the flow hole (311). The buffer mechanism (300) is used to allow the liquid to be tested to flow into the detection cavity through the flow hole (311), so that the end of the detection mechanism (100) contacts and detects the liquid to be tested that has overflowed into the detection cavity.

2. The liquid detection device according to claim 1, characterized in that: The detection mechanism (100) comprises a test strip fixing mechanism (110) and a test strip (120); The test strip fixing mechanism (110) is provided with a test strip fixing groove (111), one end of the test strip (120) extends into the test strip fixing groove (111), and the test strip (120) is clamped and fixed to the test strip fixing mechanism (110) through the test strip fixing groove (111), and the other end of the test strip (120) extends out of the test strip fixing groove (111) so as to be able to contact the liquid to be tested in the detection chamber.

3. The liquid detection device according to claim 2, characterized in that: A plurality of the test strip fixing grooves (111) are provided, and the plurality of the test strip fixing grooves (111) are arranged at intervals along the circumferential direction of the cup body (200), and at least one test strip (120) is provided in each of the test strip fixing grooves (111).

4. The liquid detection device according to claim 2, characterized in that: The side wall of the cup body (200) is provided with a limiting protrusion (220), and two limiting protrusions (220) are provided. The two limiting protrusions (220) are arranged at intervals along the circumferential direction of the cup body (200), and the test strip fixing mechanism (110) is located between the two limiting protrusions (220), and the two sides of the test strip fixing mechanism (110) are respectively engaged with the two limiting protrusions (220).

5. The liquid detection device according to claim 2, characterized in that: One end of the buffer mechanism (300) having a flow hole (311) has a first spacing from the bottom wall of the cup body (200); the test strip (120) extends out of the test strip fixing groove (111) and abuts against the bottom wall of the cup body (200); and the end of the test strip fixing groove (111) has a second spacing from the bottom wall of the cup body (200); the first spacing is less than or equal to the second spacing.

6. The liquid detection device according to claim 5, characterized in that: The buffer mechanism (300) comprises a buffer cup body (310) and an annular support (320); The cup body (200) is provided with an annular step (210), the annular support (320) is arranged in an annular shape along the circumferential direction of the buffer cup body (310), and the annular support (320) is connected to the buffer cup body (310), the buffer cup body (310) is sealedly connected to the annular step (210) via the annular support (320), and the buffer cup body (310) is suspended in the cup body (200).

7. The liquid detection device according to claim 6, characterized in that: The buffer mechanism (300) further includes a buffer protrusion (330); The buffer protrusions (330) are arranged in a ring shape along the circumferential direction of the flow hole (311), and the liquid to be tested in the buffer cup body (310) is used to flow over the buffer protrusions (330) into the detection cavity.

8. The liquid detection device according to claim 6, characterized in that: Also includes a cup cover (400); The cup body (200) is arranged to be open, and the cup cover (400) is sealedly connected to the opening of the cup body (200).

9. The liquid detection device according to claim 8, characterized in that: It also includes a columnar structure (500) and a blocking structure; the columnar structure (500) is connected to the cup cover (400); The blocking structure comprises a blocking plug, the blocking plug is inserted into the circulation hole (311), the columnar structure (500) is arranged corresponding to the blocking plug, and the columnar structure (500) is used to squeeze the blocking plug as the cup cover (400) is pressed, so that the blocking plug falls into the detection cavity, so that the buffer cup body (310) and the detection cavity are connected through the circulation hole (311); Alternatively, the blocking structure includes a blocking layer, which is sealed and adhered to the circulation hole (311), and the columnar structure (500) is arranged corresponding to the blocking layer. The columnar structure (500) is used to penetrate the blocking layer along with the cup cover (400) so that the buffer cup body (310) and the detection cavity are connected through the circulation hole (311).

10. The liquid detection device according to any one of claims 1 to 9, characterized in that: The position of the cup body (200) corresponding to the detection mechanism (100) is made of transparent material.

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