A matching structure of a liquid collector and a test tube assembly and a liquid collector thereof

Abstract

The present invention relates to a urine collection device, in particular to a stackable liquid collector and a matching structure of the liquid collector and a test tube assembly. The matching structure of a liquid collector and a test tube assembly of the present invention, the lower part of the liquid collector matches with the opening of the test tube assembly; the annular side wall A of the liquid collector and the bottom plate enclose a liquid collecting portion with an opening facing upward, and the bottom plate is provided with a liquid guide hole; the side wall C located below the bottom plate and on the periphery of the liquid guide hole is inserted into the opening of the test tube assembly and matches with the test tube assembly; the side wall B is located on the inner side of the side wall C, and the side wall B, the side wall C and the bottom plate together form a groove. Another subject of the present invention is a liquid collector. The present invention has the advantages of being stackable, smooth liquid conduction, low cost, and high production efficiency and yield rate.

Description

Technical Field

[0001] The invention relates to a urine collecting device, in particular to a stackable liquid collecting device and a matching structure of the liquid collecting device and a test tube assembly. Background Art

[0002] In the prior art liquid collector, the exhaust channel formed by the exhaust side wall is located in the liquid guide channel formed by the liquid collecting side wall. The liquid guide channel and the exhaust channel respectively pass through the bottom plate and form a liquid guide hole and an exhaust hole on the bottom plate. The liquid guide channel and the exhaust channel located below the bottom plate have a common side wall. However, this structure has the following problems:

[0003] 1. The exhaust channel formed by the annular exhaust side wall is located in the liquid conducting channel formed by the annular liquid conducting side wall that gathers the liquid. In the process of collecting liquid, since the exhaust channel is located in the liquid conducting channel formed by the side wall A, the air outlet of the exhaust channel is easily blocked, resulting in poor liquid conduction.

[0004] Even if the exhaust channel is arranged outside the liquid guiding channel formed by the annular liquid guiding side wall that gathers the liquid, in order to ensure that the liquid does not flow out from the exhaust channel during the liquid collection process, it is not necessary to make the exhaust channel higher than the height of the liquid level in the annular liquid guiding side wall that gathers the liquid during the liquid collection process. Otherwise, under the action of the communicating vessel principle, when the page height of the liquid in the annular liquid guiding side wall that gathers the liquid is higher than the exhaust hole, the liquid will flow out from the exhaust hole.

[0005] 2. Figure 1 , Figure 2 As shown, when the lower part 1 of the liquid collector cooperates with the opening of the test tube assembly (the lower part 1 of the liquid collector is inserted and fixed in the opening of the test tube assembly), the diameter of the test tube is a fixed value, so that the maximum outer diameter D of the lower part of the liquid collector below the bottom plate can only be regulated within a relatively limited size. Since the liquid guide channel 19 and the exhaust channel 59 below the bottom plate have a common side wall, the wall thickness of the lower part 1 of the liquid collector is uneven. Due to the uneven wall thickness of the lower part 1 of the liquid collector, the shrinkage rate of each part is different, and a pit 9 is formed in the lower part 1 of the liquid collector, so that the yield and efficiency of production cannot be effectively guaranteed.

[0006] 3. The urine collection devices in the prior art cannot be stacked, resulting in a large space occupation, and when stacked in warehouses, during transportation, or placed in hospitals or laboratories, the space occupied is large. In particular, during transportation, the number of urine collection devices that can be transported in a limited space is small, which increases the transportation cost, that is, also increases the cost of the product.

[0007] Therefore, how to provide a stackable liquid collector, which can ensure smooth liquid conduction, has low cost, and can effectively improve production efficiency and yield rate, and the matching structure of the liquid collector and test tube assembly has become a technical problem that needs to be solved urgently in the industry. Summary of the invention

[0008] One of the purposes of the present invention is to provide a matching structure of a liquid collector and a test tube assembly which can ensure smooth liquid conduction, has low cost, and can effectively improve production efficiency and yield.

[0009] One of the purposes of the present invention is achieved in this way:

[0010] A matching structure of a liquid collector and a test tube assembly, comprising a liquid collector and a test tube assembly. The lower part of the liquid collector matches with the opening of the test tube assembly. The liquid collector comprises an annular side wall A and a bottom plate, wherein the side wall A is used to gather liquid; a liquid guide hole is provided on the bottom plate; a liquid collecting portion with an upward opening is formed by the side wall A and the bottom plate, and a side wall B and a side wall C are provided below the bottom plate and on the periphery of the liquid guide hole; the side wall B is located on the inner side of the side wall C; the side wall B, the side wall C and the bottom plate jointly form a groove, and the side wall C is inserted into the opening of the test tube assembly to match with the test tube assembly.

[0011] The width of the groove is generally between 0.5mm-3.0mm

[0012] Preferably between 0.8mm-2.0mm

[0013] Preferably between 1.0mm-1.5mm

[0014] Among them, the side wall A, the bottom plate with a liquid guide hole, and the side wall B form a guide channel.

[0015] The lower part of the liquid collector matched with the opening of the test tube assembly, the side wall C or the side plate C and the bottom plate.

[0016] The test tube assembly may consist of only a test tube, or may include a test tube and a test tube plug, wherein the test tube plug is placed at the opening of the test tube, and the test tube plug is provided with a channel for the liquid collector to cooperate with and for transferring the liquid in the liquid collector to the test tube cavity.

[0017] In the above scheme, the side wall B or part of the side wall B is formed by extending downward from the lower surface of the bottom plate, and part of the upper end surface of the side wall C is located outside the outer edge of the bottom plate. An exhaust hole is formed between the side wall C and the outer edge of the bottom plate. When the liquid collector is matched with the test tube assembly, the exhaust hole is located at the opening of the test tube assembly or above the opening.

[0018] In the above scheme, the bottom plate extends outward from the connection with the side wall A to form an upper cover plate; the upper cover plate is provided with an exhaust hole, and the side wall B or part of the side wall B is located below the bottom plate; part of the side wall C is formed by extending downward from the bottom plate, and part of the side wall C is formed by extending downward from the upper cover plate; when the liquid collector is matched with the test tube assembly, the exhaust hole is located at the opening of the test tube assembly or above the opening.

[0019] In the above scheme, the bottom plate extends outward from the connection with the side wall A to form an upper cover plate; the side wall B, the side wall C and the upper cover plate together form a groove, and the upper cover plate in the groove is provided with an exhaust hole. The side wall B or part of the side wall B is located below the bottom plate; part of the side wall C is formed by extending downward from the bottom plate, and part of the side wall C is formed by extending downward from the upper cover plate; when the liquid collector is matched with the test tube assembly, the exhaust hole is located at the opening of the test tube assembly or above the opening.

[0020] In the above scheme, the liquid collector includes a liquid collecting part opening upward, the liquid collecting part includes a liquid collecting part A and a liquid collecting part B, and also includes a liquid collecting part C below the bottom sealing plate, the liquid collecting part B is located below the liquid collecting part A and above the liquid collecting part C; the liquid collecting part B is connected to the liquid collecting part A and the liquid collecting part C as a whole; the liquid collecting part B includes an annular side wall B and a bottom plate, and the bottom plate is provided with a liquid guide hole penetrating the bottom plate; the side wall B and the bottom plate are enclosed to form a groove A opening upward; the liquid collecting part B is used to collect liquid and to be plugged in and out with the liquid collecting part C of another liquid collection part; the liquid collecting part C includes a side wall C for cooperating with a test tube assembly, the side wall C is used to connect the test tube assembly and the liquid guide, and the side wall C is located below the bottom plate and at the periphery of the liquid guide hole.

[0021] In the above scheme, the side wall B is formed by extending downward from the lower surface of the bottom plate, and part of the upper end surface of the side wall C is located outside the outer edge of the bottom plate. An exhaust hole is formed between the side wall C and the outer edge of the bottom plate. When the liquid collector is matched with the test tube assembly, the exhaust hole is located at the opening of the test tube assembly or directly above the opening.

[0022] In the above scheme, the bottom plate extends outward from the connection with the side wall A to form an upper cover plate; the upper cover plate is provided with an exhaust hole, and the side wall B is located below the bottom plate; part of the side wall C is formed by extending downward from the bottom plate, and part of the side wall C is formed by extending downward from the upper cover plate; when the liquid collector is matched with the test tube assembly, the exhaust hole is located at the opening of the test tube assembly or directly above the opening.

[0023] In the above solution, the side wall B is ring-shaped or sheet-shaped.

[0024] In the above solution, the side wall C is ring-shaped or sheet-shaped.

[0025] Another object of the present invention is to provide a liquid collector that can be stacked, can ensure smooth liquid conduction, has low cost, and can effectively improve production efficiency and yield rate.

[0026] A liquid collector comprises a side wall A and a bottom plate, wherein the side wall A and the bottom plate are enclosed to form a liquid collecting portion with an opening upward for collecting liquid, and the bottom plate is provided with a liquid guide hole penetrating the bottom plate; side wall B and side wall C are provided below the bottom plate and around the liquid guide hole; the side wall C is used to be inserted into the opening of a test tube assembly and cooperate with the test tube assembly, the side wall B is located inside the side wall C, and there is a gap between the side wall C and the side wall B. The gap between the side wall C and the side wall B is generally not more than 2 mm, preferably 1 mm.

[0027] The matching part of the liquid collector and the opening of the test tube or the opening of the test tube assembly is the side wall C. After collecting the liquid, when pouring out the excess liquid in the liquid collector, the liquid in the inclined test tube will not flow out due to the capillary phenomenon of the gap between the side wall C and the side wall B.

[0028] The test tube assembly may be a test tube only, or may include a test tube and a test tube plug. The test tube plug has a channel for guiding liquid and cooperating with the lower part of the liquid collector. The test tube plug is placed at the opening of the test tube.

[0029] The side wall B can be annular or sheet-shaped; for example, a longitudinal groove is provided on the annular side wall B. The side wall C can be annular or sheet-shaped; for example, a longitudinal groove is provided on the annular side wall C to form a sheet.

[0030] In the above scheme, the side wall B, the side wall C and the bottom plate form a groove opening downward, and a notch is formed on the bottom of the groove. When the liquid collector is matched with the test tube assembly, the notch is used as a gas outlet in the test tube.

[0031] In the above scheme, the side wall B and the side wall C and the bottom plate and the upper cover plate jointly form a groove opening downward, the upper end surface of the side wall B is connected to the lower surface of the bottom plate and the lower surface of the upper cover plate at the same time; the upper end surface of the side wall C is connected to the lower surface of the bottom plate and the lower surface of the upper cover plate at the same time; the bottom surface of the groove includes the bottom plate and the upper cover plate, and the upper cover plate is provided with an exhaust hole penetrating the upper cover plate. The exhaust hole is the gas outlet in the test tube when the liquid collector is matched with the test tube assembly.

[0032] In the above solution, there are two exhaust holes.

[0033] In the above scheme, the lower part of the liquid collector cooperates with the liquid collecting part of the other liquid collector, and the lower part of the liquid collector includes side wall B and side wall C or side wall B, side wall C and side wall D, and side wall D is located below the bottom plate and on the periphery of side wall C.

[0034] The advantages of the present invention are:

[0035] 1. The liquid collector of the present invention cooperates with the test tube assembly. During the process of transferring the liquid in the liquid collector to the lumen of the test tube and after the liquid collection is completed, when pouring out the excess liquid in the liquid collector, since the diameter of the test tube is fixed, the maximum outer diameter of the matching part between the liquid collector and the test tube opening or the test tube assembly opening is also fixed. Within the fixed diameter, the annular side wall B or the quasi-annular side wall B and the annular side wall C or the quasi-annular side wall C are nested, and the side wall B and the side wall C are independently arranged. When the side wall B and the side wall C are demolded, the wall thickness can be effectively guaranteed to be uniform, the shrinkage rate of each part can be effectively guaranteed, and the product yield rate is improved.

[0036] 2. The liquid guide channel of the present invention is formed by the side wall A, the liquid guide hole and the side wall B; the exhaust channel or the exhaust port is not in the liquid collecting portion formed by the side wall A and the bottom plate, which effectively avoids the exhaust port from being blocked and ensures smooth flow.

[0037] 3. The liquid collectors of the present invention can be stacked, that is, the lower part of one liquid collector can be inserted into the liquid collecting part of another liquid collector, which can effectively save the space for placing the liquid collectors.

[0038] 4. After the liquid is collected, in the process of the liquid in the test tube moving upward toward the opening of the test tube, due to the capillary phenomenon, the tension of the liquid in the gap between the side wall B and the side wall C effectively prevents the liquid from moving upward, thereby effectively preventing the liquid from leaking out of the exhaust port.

[0039] 5. The present invention does not have a special exhaust side wall. The gas in the test tube is exhausted through the notch on the bottom of the groove or the exhaust port on the upper cover plate, which effectively saves raw materials.

[0040] 6. The exhaust holes of the present invention are arranged in the groove formed by the side wall C, the side wall B and the upper cover plate. Since the width of the groove is relatively narrow, the width is generally between 0.5 mm and 3.0 mm. Under the action of the surface tension of the liquid, the liquid cannot rise to the exhaust holes at the top of the groove during the entire liquid collection process. On this basis, the air in the test tube can be discharged through the groove and the exhaust holes during the liquid collection process. During the liquid collection process, when the side wall A, the guide channel and the test tube are full of liquid, and the liquid height in the side wall A is higher than the exhaust hole height, the liquid at the exhaust hole does not leak out. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of a liquid collector in the prior art in which the liquid guide channel and the exhaust channel share a side wall and pits are formed due to different shrinkage rates during production.

[0042] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0043] Figure 3 It is a cross-sectional schematic diagram of the present invention.

[0044] Figure 4 This is the schematic diagram 1 of the present invention.

[0045] Figure 5 This is schematic diagram 2 of the present invention.

[0046] Figure 6 It is a schematic diagram of the cooperation between the present invention and the test tube.

[0047] Figure 7 This is a schematic diagram of stacking the liquid collectors of the present invention-1.

[0048] Figure 8 This is a schematic diagram of the test tube assembly of the present invention-1.

[0049] Fig. 9 This is a schematic diagram of the test tube assembly of the present invention-2.

[0050] Fig.10 This is a schematic diagram of stacking the liquid collectors of the present invention-2.

[0051] In the figure:

[0052] 100 liquid collector, 100a liquid collector a, 100b liquid collector b,

[0053] 1 the lower part of the liquid collector, 1a the lower part of the liquid collector, 1b the lower part of the liquid collector, 10 the side wall armor, 10a the side wall armor, 10b the side wall armor, 19 the liquid guide channel,

[0054] 2 liquid collecting part, 2a liquid collecting part, 2b liquid collecting part, 21 convex rib, 21a convex rib, 21b convex rib,

[0055] 30 side wall C, 30a side wall C, 30b side wall C,

[0056] 4 bottom plate, 4a bottom plate, 4b bottom plate, 40 liquid guide hole, 40a liquid guide hole, 40b liquid guide hole,

[0057] 5 upper cover plate, 5a upper cover plate, 5b upper cover plate, 50 exhaust hole, 50a exhaust hole, 50b exhaust hole, 59 exhaust channel,

[0058] 61 side wall D, 61a side wall D, 61b side wall D, 62 side wall B, 62a side wall B, 62b side wall B,

[0059] 7 test tube assembly, 70 opening, 79 test tube plug, 791 channel,

[0060] 8 gap, 8a gap, 8b gap, 80 slot,

[0061] 9 pits, D the maximum outer diameter of the lower part of the liquid collector,

[0062] 11 is liquid gathering section A, 12 is liquid gathering section B, 13 is liquid gathering section C. DETAILED DESCRIPTION

[0063] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only preferred examples and are not intended to limit the scope of the present invention. On the contrary, the purpose is to cover various changes and arrangements with equivalents within the scope of the patent scope to be applied for by the present invention.

[0064] Example 1: Combination Figures 3 to 5 And know

[0065] The liquid collector 100 includes an annular side wall A 10 for collecting liquid, an annular side wall C 30 , an upper cover plate 5 , a side wall D 61 , a bottom cover plate 4 and an exhaust hole 50 .

[0066] The bottom cover plate 4 is provided with a liquid guide hole 40. The upper cover plate 5 is provided with an exhaust hole 50.

[0067] The side wall armor 10 is used to gather liquid. A convex rib 21 is provided on the inner side wall of the side wall armor 10.

[0068] The side wall A 10 and the bottom cover plate 4 form a liquid collecting portion 2 with an opening facing upward.

[0069] The side wall A 10 , the liquid conducting hole 40 on the bottom cover plate 4 and the side wall B 62 are combined to form a liquid conducting channel.

[0070] The side wall C 30 , the side wall D 61 and the exhaust hole 50 form an exhaust passage.

[0071] The side wall B 62 surrounds the outer periphery of the exhaust hole 50 and is connected to the lower surface of the bottom plate 4 and the lower surface of the upper cover plate 5 .

[0072] The side wall C 30 surrounds the outer periphery of the exhaust hole 50 and is connected to the lower surface of the bottom plate 4 and the lower surface of the upper cover plate 5 . The side wall C 30 is sleeved on the outer side of the side wall B 62 .

[0073] The upper end surface of the side wall D 61 is connected to the lower surface of the bottom cover plate 4 and the lower surface of the upper cover plate 5. An exhaust hole 50 is provided on the upper cover plate 5 between the side wall A 10 and the side wall C 30.

[0074] Example 2: Combination Figure 7 And know

[0075] When liquid collector a and liquid collector b are stacked:

[0076] The liquid collector a100a includes an annular side wall A 10a for collecting liquid, an annular side wall C 30a, an upper cover plate 5a, a side wall D 61a, a bottom plate 4a and an exhaust hole 50a.

[0077] The bottom cover plate 4a is provided with a liquid guide hole 40a. The upper cover plate 5a is provided with an exhaust hole 50a.

[0078] The side wall 10a is enclosed to collect liquid. A convex rib 21a is provided on the inner side wall of the side wall 10a.

[0079] The side wall A 10a and the bottom cover plate 4a form a liquid collecting portion 2a with an opening facing upward.

[0080] The side wall A 10a, the liquid guide hole 40a on the bottom cover plate a4 and the side wall B 62a are combined to form a liquid guide channel.

[0081] The side wall C 30a, the side wall D 61a and the exhaust hole 50a form an exhaust passage.

[0082] The side wall B 62a surrounds the outer periphery of the exhaust hole 50a and is connected to the lower surface of the bottom plate 4a and the lower surface of the upper cover plate 5a.

[0083] The side wall C 30a surrounds the outer periphery of the exhaust hole 50a and is connected to the lower surface of the bottom plate 4a and the lower surface of the upper cover plate 5a. The side wall C 30a is sleeved on the outer side of the side wall B 62a.

[0084] The upper end surface of the side wall D 61a is connected to the lower surface of the bottom plate 4a and the lower surface of the upper cover plate 5a. An exhaust hole 50a is provided on the upper cover plate 5a between the side wall A 10a and the side wall C 30a.

[0085] The liquid collector b100b includes an annular side wall A 10b for collecting liquid, an annular side wall C 30b, an upper cover plate 5b, a side wall D 61b, a bottom plate 4b and an exhaust hole 50b.

[0086] The bottom cover plate 4b is provided with a liquid guide hole 40b. The upper cover plate 5b is provided with an exhaust hole 50b.

[0087] The side wall 10b is enclosed to collect liquid. A convex rib 21b is provided on the inner side wall of the side wall 10b.

[0088] The side wall A 10b and the bottom cover plate 4b form a liquid collecting portion 2b with an opening facing upward.

[0089] The side wall A 10 , the liquid conducting hole 40 on the bottom cover plate 4 and the side wall B 62 are combined to form a liquid conducting channel.

[0090] The side wall C 30b, the side wall D 61b and the exhaust hole 50b form an exhaust passage.

[0091] The side wall 62b surrounds the outer periphery of the exhaust hole 50b and is connected to the lower surface of the bottom plate 4b and the lower surface of the upper cover plate 5b.

[0092] The side wall C 30b surrounds the outer periphery of the exhaust hole 50b and is connected to the lower surface of the bottom plate 4b and the lower surface of the upper cover plate 5b. The side wall C 30b is sleeved on the outer side of the side wall B 62b.

[0093] The upper end surface of the side wall D 61b is connected to the lower surface of the bottom plate 4b and the lower surface of the upper cover plate 5b. An exhaust hole 50b is provided on the upper cover plate 5b between the side wall A 10b and the side wall C 30b.

[0094] The lower part 1a of the liquid collector a100a is inserted into the liquid collecting part 2a of the liquid collector b100b, and the side wall Ding 61a of the liquid collector a100a cooperates with the convex rib 21b on the inner wall of the side wall A10b of the liquid collector b100b.

[0095] Combination Figure 3-5 If the liquid collector 100 does not have the side wall 61,

[0096] The side wall C 30 cooperates with the convex rib 21 on the inner wall of the side wall A 10 of the other liquid collector 100 .

[0097] Example 3: Combination Figures 3 to 6 , Figure 8 As shown,

[0098] The matching structure of the liquid collector and the test tube assembly includes the liquid collector 100 and the test tube assembly.

[0099] The lower portion 1 of the liquid collector cooperates with the opening 70 of the test tube 7;

[0100] The liquid collector 100 is formed by the annular side wall A 10 and the bottom plate 4 to form a liquid collecting portion 2 with an opening facing upward, and a liquid guide hole 40 is provided on the bottom plate 4 inside the annular side wall B 62;

[0101] Below the bottom cover plate 4, a side wall C 30 is provided on the periphery of the liquid guide hole 40. The side wall C 30 of the lower portion 1 of the liquid collector is inserted into the opening 70 of the test tube 7 and cooperates with the test tube 7;

[0102] An annular side wall B 62 is disposed inside the annular side wall C 30 and around the liquid guide hole 40. The side wall B 62, the side wall C 30 and the bottom cover plate 4 together form a groove 80. The groove 80 is composed of the bottom cover plate 4 and the upper cover plate 5. The upper cover plate 5 is provided with an exhaust hole 50. The exhaust hole 50 is located on the upper cover plate between the side wall B 62 and the side wall C 30.

[0103] The gap 8 between the side wall B 62 and the side wall C 30 is generally 1 mm.

[0104] After the liquid collector 100 is matched with the test tube 7, during the process of collecting liquid, the liquid is gathered from the side wall A 10 and flows into the test tube 7 through the liquid guide channel of the liquid collecting part 2. During the process of the liquid flowing into the test tube 7, the gas in the test tube 7 is discharged through the exhaust hole 50.

[0105] like Fig. 9 As shown, the test tube assembly may also include a test tube 7 and a test tube plug 79 , wherein the test tube plug 79 is provided with a channel 791 , and the test tube plug 79 is placed in the opening 70 of the test tube 7 .

Claims

1. A matching structure of a liquid collector and a test tube assembly, wherein the lower part of the liquid collector matches the opening of the test tube assembly; the liquid collector is surrounded by an annular side wall and a bottom plate to form a liquid collecting portion with an opening upward, and the bottom plate is provided with a liquid guide hole; characterized in that: Side wall C, which is located below the bottom plate and on the periphery of the liquid guide hole, is inserted into the opening of the test tube assembly and cooperates with the test tube assembly; side wall B is located on the inner side of side wall C, and side wall B, side wall C and the bottom plate jointly form a groove, side wall B or part of side wall B is formed by extending downward from the lower surface of the bottom plate, and part of the upper end surface of side wall C is located outside the outer edge of the bottom plate, and the bottom plate extends outward from the connection with side wall A to form an upper cover plate; an exhaust hole is provided on the upper cover plate, and the exhaust hole is arranged in the groove formed by side wall C, side wall B and the upper cover plate and is located between side wall C and the outer edge of the bottom plate. When the liquid collector cooperates with the test tube assembly, the exhaust hole is located at the opening of the test tube assembly or above the opening.

2. The matching structure of a liquid collector and a test tube assembly according to claim 1, characterized in that: The side wall B or part of the side wall B is located below the bottom cover plate; part of the side wall C is formed by extending downward from the bottom cover plate, and part of the side wall C is formed by extending downward from the upper cover plate.

3. The matching structure of a liquid collector and a test tube assembly according to any one of claims 1 or 2, characterized in that: The side wall B is in the shape of a ring or a sheet.

4. The matching structure of a liquid collector and a test tube assembly according to any one of claims 1 or 2, characterized in that: The side wall C is in the shape of a ring or a sheet.

5. A liquid collector, comprising a side wall A and a bottom plate, wherein the side wall A and the bottom plate are enclosed to form a liquid collecting portion with an opening upward for collecting liquid, and the bottom plate is provided with a liquid guide hole penetrating the bottom plate; characterized in that: Side wall B and side wall C are provided below the bottom plate and around the liquid guide hole; side wall B or part of side wall B is formed by extending downward from the lower surface of the bottom plate, and part of the upper end surface of side wall C is located outside the outer edge of the bottom plate, and the bottom plate extends outward from the connection with side wall A to form an upper cover plate; side wall C is used to be inserted into the opening of the test tube assembly and cooperate with the test tube assembly, and side wall B is located on the inner side of side wall C, and there is a gap between side wall C and side wall B; side wall B, side wall C and the bottom plate form a groove opening downward, and an exhaust hole is provided on the upper cover plate in the groove, and when the liquid collector is matched with the test tube assembly, the exhaust hole is located at the opening of the test tube assembly or above the opening.

6. A liquid collector according to claim 5, characterized in that: The exhaust hole is arranged on the upper cover plate between the side wall C and the outer edge of the bottom cover plate, and the exhaust hole passes through the upper cover plate.

7. The liquid collector according to claim 5, characterized in that: The upper end surface of the side wall B is connected to the lower surface of the bottom plate and the lower surface of the upper cover plate at the same time; the upper end surface of the side wall C is connected to the lower surface of the bottom plate and the lower surface of the upper cover plate at the same time; the bottom surface of the groove includes the bottom plate and the upper cover plate, and the upper cover plate is provided with an exhaust hole that passes through the upper cover plate.

8. The liquid collector according to claim 5, characterized in that: The liquid collector includes a liquid collecting part which opens upward, and the liquid collecting part includes part A and part B, and also includes part C below the ground sealing plate, and the part B is located below the part A and above the part C; the part B is connected to the part A and the part C as a whole; the part B includes an annular side wall B and a bottom plate, and the bottom plate is provided with a liquid guide hole which passes through the bottom plate; the side wall B and the bottom plate are combined to form a groove A which opens upward; the part B is used to collect liquid and to be plugged in and out with part C of another liquid collection component; the part C includes a side wall C for cooperating with a test tube assembly, and the side wall C is used to connect the test tube assembly and the liquid guide, and the side wall C is located below the bottom plate and at the periphery of the liquid guide hole.

9. The liquid collector according to claim 5, characterized in that: The side wall B or part of the side wall B is located below the bottom cover plate; part of the side wall C is formed by extending downward from the bottom cover plate, and part of the side wall C is formed by extending downward from the upper cover plate.

10. The liquid collector according to claim 5, characterized in that: The lower part of the liquid collector cooperates with the liquid collecting part of another liquid collector. The lower part of the liquid collector includes side wall B and side wall C or side wall B, side wall C and side wall D. The side wall D is located below the bottom plate and on the periphery of the side wall C.

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