TWI646330B - Liquid detection - Google Patents

Abstract

A liquid detection box includes a casing and a plurality of detection test papers. A housing cavity is formed inside the housing, an injection flow channel isolated from one side of the storage cavity, and a liquid collecting tank communicating with the storage cavity and the injection flow channel. The casing is provided with a plurality of exhaust holes communicating with the receiving cavity and an injection port communicating with the injection flow channel. Multiple test strips can respond to different chemicals. Multiple test strips are fixed side by side in the receiving cavity and cannot be taken out of the receiving cavity. Each detection test paper has an absorption end, and a plurality of absorption ends are arranged side by side in the liquid collecting tank. A gap is formed between each absorption end and the bottom of the liquid collecting tank, and the bottom of the liquid collecting tank is inclined. Among them, a plurality of gaps formed by the multiple absorption ends and the bottom of the liquid collecting tank are directed away from the injection by the adjacent injection channel. The direction of the flow path gradually increases.

Description

Liquid detection box

The invention relates to a liquid detection box, in particular to a liquid detection box capable of containing a plurality of different detection test papers.

In the technical field of detection and analysis, special biochemical test strips are used to test liquids (such as blood, urine, saliva, etc.) for specific testing items (such as specific drug components, blood glucose values, cholesterol values, uric acid) Values, etc.), is a very common test identification method. This method is often used in academic laboratories, medical institutions, laboratories, or home testing. This kind of inspection procedure through the detection of the test paper to achieve a specific purpose can save the use of many testing instruments and the time spent on testing.

The test strips currently used can be divided into semi-quantitative and qualitative test strips. Regardless of the above-mentioned semi-quantitative test strips or qualitative test strips, it is either a single test item or multiple test items are set up next to each other. However, the test strip of a single item must be tested one by one into the liquid or sample to be tested, and the operation process is quite complicated and time-consuming; while the test strips of multiple test items set up next to each other can simplify the operation process and save test time However, it still has the defect that the detection start time is not uniform, which affects the detection efficiency.

Therefore, the present inventor believes that the above-mentioned defects can be improved, and with special research and cooperation with the application of scientific principles, he finally proposes an invention with a reasonable design and effective improvement of the above-mentioned defects.

An embodiment of the present invention is to provide a liquid detection box, which can effectively improve the defects existing in the prior art.

An embodiment of the present invention discloses a liquid detection cassette, which includes a housing, an accommodation cavity is formed inside, an injection flow channel isolated from one side of the accommodation cavity, and communicates with the accommodation cavity and the injection flow. A liquid collecting tank of the channel and a retaining wall between the receiving cavity and the liquid collecting tank, and the flow volume between the receiving cavity and the liquid collecting tank is controlled by the retaining wall The housing is provided with a plurality of exhaust holes that communicate with the receiving cavity and an injection port that communicates with the injection channel: and a plurality of test papers, which can respectively detect different chemical substances. In response, a plurality of the test strips are fixed side by side in the storage cavity, and a plurality of the test strips cannot be taken out of the storage cavity; wherein each of the test strips has an absorption end, and multiple The absorption ends are arranged side by side near the retaining wall and face the liquid collecting tank, and each of the absorption ends forms a gap with the bottom of the liquid collecting tank; wherein the liquid collecting tank The bottom of the groove is bevel-shaped, and a plurality of Said plurality of said gap absorption edge of the groove bottom formed by implantation adjacent to the flow path direction away from the injection flow channel is gradually increased.

Another embodiment of the present invention discloses a liquid detection cassette, which includes a casing, an accommodation cavity is formed inside, an injection flow channel isolated from one side of the accommodation cavity, and the accommodation cavity and the injection are communicated with each other. A liquid collecting tank of the flow channel; wherein the casing is provided with a plurality of exhaust holes communicating with the receiving cavity and an injection port communicating with the injection flow channel; and a plurality of detection test papers, which can respectively The chemical substance reacts, a plurality of the test strips are fixed side by side in the storage cavity, and a plurality of the test strips cannot be taken out of the storage cavity; each of the test strips has an absorption end. And a plurality of the absorption ends are arranged side by side near the liquid collecting tank, and each of the absorption ends forms a gap with the bottom of the liquid collecting tank; wherein the The bottom of the groove is inclined, and the gaps formed by the plurality of absorption ends and the bottom of the groove are gradually increased from being adjacent to the injection flow path and away from the injection flow path.

In summary, the liquid detection cartridge of the embodiment of the present invention can be inclined through the groove bottom of the liquid collecting tank, and the multiple gaps formed by the absorption ends of the plurality of detection test papers and the groove bottom are injected by proximity The structure design in which the flow path is gradually increased away from the injection flow path allows a plurality of the test strips to start testing at approximately the same time, thereby effectively improving the detection efficiency of the liquid detection cassette.

In addition, the liquid detection cassette of the embodiment of the present invention can adjust the flow rate (flow ratio) of the liquid to be detected flowing from the liquid collecting tank into the receiving cavity through the change of the height of the retaining wall, thereby improving the detection status of the liquid detection cassette.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention, but these descriptions and drawings are only used to illustrate the present invention, and not to make any limitation to the protection scope of the present invention. limit.

1000‧‧‧ liquid detection box

1‧‧‧shell

11‧‧‧Containing cavity

12‧‧‧Injected into the runner

121‧‧‧ Guide Bevel

13‧‧‧ collection tank

131‧‧‧Slot bottom

132‧‧‧Slot

14‧‧‧Vent

15‧‧‧ injection port

16‧‧‧ buffer space

17‧‧‧Rib

18‧‧‧ card slot

19‧‧‧ Retaining wall

101‧‧‧ the first long side

102‧‧‧Second long side

103‧‧‧First short side

104‧‧‧Second Short Side

105‧‧‧ lower cover

1051‧‧‧ Support rib

1052‧‧‧First engaging section

106‧‧‧ Upper cover

1061‧‧‧Board

1062‧‧‧Circular Tube Department

1063‧‧‧First transparent window

1064‧‧‧Second transparent window

2‧‧‧test strip

21‧‧‧ Absorptive end

3‧‧‧sealing plug

31‧‧‧ film

32, 33‧‧‧ cylindrical plugs

G1, G2, G3, G4, G5 ‧‧‧ Clearance

FIG. 1 is a schematic perspective view of a liquid detection box according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the sealing plug of FIG. 1 separated from the casing.

FIG. 3 is a schematic cross-sectional view taken along the line III-III of FIG. 1.

FIG. 4 is a schematic cross-sectional view of the casing in FIG. 1 taken along the line III-III.

FIG. 5 is an exploded view of FIG. 1 (the detection test paper is omitted).

FIG. 6 is a schematic cross-sectional view taken along the line VI-VI of FIG. 1.

Please refer to FIG. 1 to FIG. 6, which are embodiments of the present invention. It should be noted that this embodiment corresponds to the related quantities and appearances mentioned in the drawings, and is only used to specifically describe the embodiments of the present invention, so that In order to understand the content of the present invention, it is not intended to limit the protection scope of the present invention.

As shown in FIG. 1 and FIG. 2, an embodiment of the present invention discloses a liquid detection cassette 1000. The liquid detection cassette 1000 includes a casing 1 and is fixed in the casing 1 side by side. A plurality of detection test papers 2 and a sealing plug 3 detachably mounted on the casing 1. The specific structure of each element of the liquid detection cassette 1000 in this embodiment will be described below, and then the connection relationship between the various elements of the liquid detection cassette 1000 will be described in due course.

As shown in FIGS. 2 to 4, a housing cavity 11 (located on the left side of the housing 1) is formed inside the housing 1, and an injection channel 12 (located on the housing 1) is isolated from one side of the housing cavity 11. Right side of the housing), a liquid collecting tank 13 (located on the lower side of the housing 1) communicating with the receiving cavity 11 and the injection channel 12, and a liquid collecting tank 13 located between the receiving cavity 11 and the liquid collecting tank 13 Retaining wall 19.

The casing 1 is provided with a plurality of exhaust holes 14 (see FIG. 2) communicating with the receiving cavity 11 and an injection port 15 communicating with the injection flow channel 12. The injection port 15 can be used to inject a liquid to be detected (such as blood, urine, saliva, etc.), and a plurality of the exhaust holes 14 can be used to exhaust excess gas (such as: : Gas generated during detection).

As shown in FIGS. 4 and 6, the flow volume (eg, the flow volume of the liquid to be detected) between the receiving cavity 11 and the liquid collecting tank 13 is defined by the height of the retaining wall 19 (see FIG. 6). In more detail, the retaining wall 19 is inclined, and the height of the retaining wall 19 gradually decreases from the direction adjacent to the injection flow path 12 toward the direction away from the injection flow path 12.

A plurality of the test strips 2 can respectively react to different chemical substances to test different detection items (such as a specific drug component, blood glucose value, cholesterol value, uric acid value, etc.). In more detail, the plurality of detection test papers 2 are fixed side by side and spaced apart from each other in the storage cavity 11, and the plurality of detection test papers 2 cannot be taken out from the storage cavity 11. In this way, the liquid detection cassette 1000 can avoid the situation that the test strip 2 is exposed outside the casing 1, and can reduce the risk of harmful substances remaining on the test strip 2 from causing harm to the human body or the environment.

Furthermore, each of the detection test papers 2 has an absorbing end 21, and a plurality of the absorbing ends 21 are arranged side by side and spaced apart from each other at a distance near the retaining wall 19 and face the liquid collecting tank 13, The absorption ends 21 are aligned with each other, and a plurality of the absorption ends 21 forms a plurality of gaps G1, G2, G3, G4, and G5 with the bottom 131 of the liquid collecting tank 13, respectively. The bottom 131 of the liquid collecting tank 13 is inclined, and the gaps G1, G2, G3, G4, and G5 formed by the plurality of absorption ends 21 and the bottom 131 of the liquid collecting tank 13 are formed by The adjacent injection flow channel 12 gradually increases in a direction away from the injection flow channel 12 (that is, G5> G4> G3> G2> G1). It must be noted that a plurality of the absorption ends 21 in this embodiment are arranged side by side in the receiving cavity 11 without exceeding the retaining wall 19 (see FIG. 3), but the present invention is not limited thereto. For example, a plurality of the absorption ends 21 may also be arranged side by side in the liquid collecting tank 13 beyond the retaining wall 19 (not shown in the figure), or a plurality of the absorption ends 21 may be aligned with the stopper. The wall 19 (not shown), as long as a plurality of the absorption ends 21 are arranged side by side near the retaining wall 19 and faces the liquid collecting tank 13, all conform to the spirit of the present invention and belong to the protection scope of the present invention.

With the above configuration, the liquid to be detected (not shown) can be injected from the injection port 15 of the liquid detection cassette 1000, and the liquid to be detected will sequentially flow from the injection channel 12 to the tank of the liquid collecting tank 13. The bottom 131 is simultaneously in contact with a plurality of the test strips 2 to start detection.

More specifically, since the tank bottom 131 of the liquid collecting tank 13 in this embodiment is inclined, and the gaps G1, G2, and G3 formed by the plurality of absorption ends 21 of the test strip 2 and the tank bottom 131 are formed. G4, G4, and G5 gradually increase from the adjacent injection flow channel 12 toward the direction away from the injection flow channel 12 (or as shown in FIG. 3, the slope of the groove bottom 131 is inclined from the upper right to the lower left). Therefore, when the liquid to be detected flows into the bottom 131 of the liquid collecting tank 13, the liquid to be detected does not first come into contact with any one of the plurality of test strips 2 (such as the rightmost one). More specifically, the liquid to be tested will first flow to the left side of the tank bottom 131, and after its liquid level rises to a certain height, it will be in contact with the absorption ends 21 of multiple test strips 2 at the same time. Thereby, a plurality of the test strips 2 can be tested at about the same time, thereby effectively improving the detection efficiency of the liquid detection cassette 1000. In addition, the liquid detection cassette 1000 can adjust the flow rate (flow ratio) of the liquid to be detected flowing from the liquid collecting tank 13 into the receiving cavity 11 by changing the height of the retaining wall 19, thereby improving the liquid detection cassette 1000. Detection status.

It must be noted that although the liquid to be detected in the embodiment of the present invention is described using human blood, urine, and saliva, and the detection items are described using specific drug components, blood glucose values, cholesterol values, and uric acid values, the present The invention is not limited to this. For example, the liquid to be tested may also be beverages, tap water, industrial wastewater, etc., and the testing items may also involve fields such as food safety or water quality testing.

Please continue to refer to FIG. 3 and FIG. 4. In this embodiment, a guide inclined surface 121 is provided at a portion of the injection channel 12 adjacent to the liquid collecting tank 13, and the slope of the guiding inclined surface 121 is greater than that of the liquid collecting tank. The slope of the groove bottom 131. Thereby, the liquid to be detected in the injection flow channel 12 can flow smoothly into the liquid collecting tank 13 by being guided by the guide inclined surface 121.

Furthermore, the liquid collecting tank 13 has a slot 132 between the receiving cavity 11 and the guiding inclined surface 121. The casing 1 is formed with a buffer space 16 at a position corresponding to the guide inclined surface 121 and the slot 132. The buffer space 16 communicates with the notch 132 and the injection channel 12, and is isolated from the receiving cavity 11. The height of the buffer space 16 is greater than the height of the guide inclined surface 121, and the width of the buffer space 16 is greater than the width of the notch 132. Therefore, when the injected liquid to be detected is excessive, the liquid to be detected can be temporarily stored in the buffer space 16 and then flowed into the liquid collecting tank 13 through the slot 132, thereby avoiding the liquid to be detected. The overflow from the injection port 15 to the outside of the case 1 occurs.

Please continue to refer to FIG. 3 and FIG. 4, the housing 1 is formed with a plurality of pressure ribs 17 in the receiving cavity 11, and the plurality of test strips 2 are pressed against and fixed to the receiving cavity 11 by the plurality of pressure ribs 17. Inside. Thereby, a plurality of the detection test papers 2 which are spaced apart from each other can be respectively fixed at their original positions and will not be moved due to an external force (such as shaking or vibration). Therefore, the plurality of detection test papers 2 will not interfere with each other's detection results, thereby effectively improving the detection result of the liquid detection cassette 1000. Fruit reliability.

As shown in FIG. 1 to FIG. 3, in more detail, the casing 1 is substantially rectangular plate-shaped and has a first long side 101, a second long side 102, a first short side 103, and一 second short side edge 104. Wherein, the injection channel 12 is adjacent to the first long side 101, the liquid collecting tank 13 is adjacent to the first short side 103, and a plurality of the exhaust holes 14 are adjacent to the second short side Edge 104. Preferably, the first long side 101 is in an arc shape, and the second long side 102 is in a flat shape, so that the liquid detection box 1000 has a fool-proof function and can quickly identify liquids. The orientation of the detection cassette 1000 or the position of the injection port 15 improves the convenience of use of the liquid detection cassette 1000. Furthermore, the groove bottom 131 of the liquid collecting tank 13 and the first short side edge 103 are preferably formed with an included angle greater than 1 degree and less than 15 degrees (see FIG. 3), but the present invention is not limited herein.

As shown in FIGS. 2 and 3, the injection port 15 is located at a corner where the first long side 101 and the second short side 104 of the casing 1 are connected. The sealing plug 3 is detachably mounted on the casing 1 and seals the injection port 15. In more detail, the casing 1 is formed with an insertion slot 18 adjacent to the injection port 15. The sealing plug 3 includes a one-piece body 31 and two cylindrical plug bodies 32 and 33 extending perpendicularly from the one-piece body 31. The two cylindrical plug bodies 32 and 33 are respectively inserted into the injection port 15 and the card insertion slot 18, and the outer surface of the sheet body 31 is substantially coplanar with the second short side edge 104. Therefore, when the liquid detection cassette 1000 is not in use, or after the inspector has filled the liquid to be inspected, the sealing plug 3 can be used to seal the injection port 15 of the casing 1, thereby effectively reducing impurities or foreign matter. Into the liquid detection cassette 1000.

As shown in FIG. 5, from another perspective, the casing 1 includes a lower cover 105 and an upper cover 106 which is detachably mounted on the lower cover 105. The lower cover 105 is formed with a plurality of pressure ribs 17 arranged side by side, and a branch on one side of the plurality of pressure ribs 17 is formed. The support ribs 1051, the liquid collecting tanks 13 located at one end of the plurality of pressure ribs 17 and the support ribs 1051, and the plurality of first engaging portions 1052 (three in this embodiment) located at the periphery of the plurality of pressure ribs 17. . Wherein, a plurality of the test strips 2 are respectively disposed on a plurality of pressure ribs 17 (not shown in the figure), and the surfaces of the support ribs 1051 (such as the support ribs 1051 in FIG. 5) far from the plurality of pressure ribs 17 Right surface) is arc-shaped.

The upper cover 106 includes a plate body 1061 facing a plurality of pressure ribs 17, a circular pipe portion 1062 connected to the plate body 1061 and disposed on the support rib 1051, and connected to the plate body 1061 and can be respectively clamped. A plurality of second engaging portions (not shown) coupled to the plurality of first engaging portions 1052. Wherein, a first transparent window 1063 is formed at a portion of the plate body 1061 adjacent to the liquid collecting tank 13, a plurality of exhaust holes 14 are formed at a portion of the plate body 1061 far from the first transparent window 1063, and a plurality of the The exhaust holes 14 correspond to a plurality of pressure ribs 17, respectively. The plate body 1061 is formed with a second transparent window 1064 located between the first transparent window 1063 and the plurality of exhaust holes 14. The injection channel 12 is formed inside the circular tube portion 1062.

Therefore, after the liquid detection box 1000 starts to perform detection, the inspection personnel can observe the state of the liquid to be detected and the plurality of test strips 2 through the first transparent window 1063 and the second transparent window 1064, respectively, thereby improving the liquid detection box. Convenience of 1000. Furthermore, a plurality of the exhaust holes 14 can be used to exhaust the excess gas (such as the gas generated during the detection process) in the casing 1, so as to prevent the gas from affecting the detection result.

[Technical effect of the embodiment of the present invention]

In summary, the liquid detection cartridge 1000 according to the embodiment of the present invention can be inclined through the groove bottom 131 of the liquid collecting tank 13, and a large number of the absorption end 21 and the groove bottom 131 of the plurality of test strips 2 are formed. The gaps G1, G2, G3, G4, and G5 are structural designs that gradually increase from the adjacent injection flow path 12 in a direction away from the injection flow path 12, so that a plurality of the test strips 2 can be tested at approximately the same time. Therefore, the detection efficiency of the liquid detection cassette 1000 is effectively improved.

In addition, the liquid detection cassette 1000 according to the embodiment of the present invention can adjust the flow rate (flow ratio) of the liquid to be detected flowing from the liquid collecting tank 13 into the receiving cavity 11 by changing the height of the retaining wall 19, thereby improving the liquid detection cassette. Detection status of 1000.

Furthermore, the liquid detection cassette 1000 according to the embodiment of the present invention can be pressed and fixed in the storage cavity 11 by a plurality of the test strips 2 by a plurality of pressure ribs 17, so that a plurality of the test strips 2 disposed at a distance from each other can be fixed. They are fixed in their original positions and will not be moved by external forces (such as shaking or vibration). Therefore, the plurality of detection test papers 2 do not interfere with each other's detection results, thereby effectively improving the reliability of the detection results of the liquid detection cassette 1000.

Finally, after the liquid detection cassette 1000 of the embodiment of the present invention starts to perform detection, the inspector can observe the state of the liquid to be detected and the plurality of test strips 2 through the first transparent window 1063 and the second transparent window 1064, respectively, thereby improving the liquid detection. The ease of use of the cassette 1000. Furthermore, a plurality of the exhaust holes 14 can be used to exhaust the excess gas (such as the gas generated during the detection process) in the casing 1, so as to prevent the gas from affecting the detection result.

The above are only the preferred and feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Equal changes and modifications that depend on the scope of the patent application for the present invention should all fall within the protection scope of the claims of the present invention. .

Claims (12)

A liquid detection cassette includes: a housing formed with a receiving cavity inside, an injection flow channel isolated from one side of the receiving cavity, and a liquid collection communicating with the receiving cavity and the injection flow channel. A trough and a retaining wall between the receiving cavity and the liquid collecting tank, and the flow volume between the receiving cavity and the liquid collecting tank is defined by the height of the retaining wall; The casing is provided with a plurality of exhaust holes communicating with the receiving cavity and an injection port communicating with the injection flow channel; and a plurality of detection test papers can respectively react to different chemical substances. The test strips are fixed side by side in the storage cavity, and a plurality of the test strips cannot be taken out of the storage cavity; wherein each of the test strips has an absorption end and a plurality of the absorption ends. Are arranged side by side near the retaining wall and face the liquid collecting tank, and each of the absorption ends forms a gap with the bottom of the liquid collecting tank; wherein the bottom of the liquid collecting tank Is inclined, and a plurality of the absorption ends and the A plurality of the gap formed by the substrate adjacent to the flow path direction away from the injection of the injection flow channel is gradually increased. The liquid detection cassette according to claim 1, wherein the retaining wall has a slope shape, and the height of the retaining wall is gradually reduced from being adjacent to the injection flow path and away from the injection flow path. . The liquid detection cassette according to claim 1, wherein a guide slope is provided at the injection channel portion adjacent to the liquid collecting tank, and the slope of the guide slope is greater than the slope of the bottom of the tank. The liquid detection cassette according to claim 3, wherein the liquid collecting tank has a notch between the receiving cavity and the guiding inclined surface, and the casing is in a position corresponding to the guiding inclined surface. A buffer space is formed at the position of the slot, and the buffer space communicates with the slot and the injection channel, and is isolated from the receiving cavity; wherein the height of the buffer space is greater than the height of the buffer space. Guide the height of the slope, and the width of the buffer space is greater than the width of the slot. The liquid detection cassette according to claim 1, wherein the casing is formed with a plurality of pressure ribs in the accommodation cavity, and the plurality of test test papers are pressed against and fixed to the plurality of pressure ribs. Containing cavity. The liquid detection cassette according to any one of claims 1 to 5, wherein the casing is substantially rectangular plate-shaped and has a first long side, a second long side, and a first short side Side and a second short side edge, the injection channel is adjacent to the first long side edge, the liquid collecting tank is adjacent to the first short side edge, and a plurality of the exhaust holes It is adjacent to the second short side. The liquid detection cassette according to claim 6, wherein the first long side is arc-shaped and the second long side is planar. The liquid detection cassette according to claim 6, wherein an angle between the bottom of the groove and the first short side edge is greater than 1 degree and less than 15 degrees. The liquid detection cassette according to claim 6, wherein the injection port is located at a corner of the housing connected to the first long side and the second short side, and the liquid detection cassette further includes There is a sealing plug, and the sealing plug is detachably mounted on the casing and seals the injection port. The liquid detection cassette according to claim 9, wherein the casing is formed with an insertion slot adjacent to the injection port, and the sealing plug has a piece of body and two pieces extending vertically from the piece of body A cylindrical plug body, two of the cylindrical plug bodies are respectively inserted in the injection port and the card insertion slot, and the outer surface of the sheet body is substantially coplanar with the second short side edge. The liquid detection cassette according to any one of claims 1 to 4, wherein the housing includes a lower cover, a plurality of pressure ribs arranged side by side, and one Support ribs, and the liquid collecting tank at one end of the plurality of pressure ribs and the support ribs; wherein, the plurality of detection test papers are respectively disposed on the plurality of pressure ribs, away from the plurality of pressure ribs A surface of the supporting rib is arc-shaped; and an upper cover is detachably mounted on the lower cover, and the upper cover includes a plate body facing a plurality of the pressure ribs and a plate body connected to the plate body and A circular tube portion provided on the supporting rib; wherein a first transparent window is formed at a portion of the plate body adjacent to the liquid collecting tank, and a plurality of portions of the plate body remote from the first transparent window portion are formed. The exhaust hole, and the plurality of exhaust holes respectively correspond to the plurality of pressure ribs, and the plate body is formed with a one between the first transparent window and the plurality of exhaust holes A second transparent window; the injection channel is formed inside the circular tube portion. A liquid detection cassette includes: a housing formed with a receiving cavity inside, an injection channel isolated from one side of the receiving cavity, and a set communicating with the receiving cavity and the injection channel. A liquid tank; wherein the casing is provided with a plurality of exhaust holes communicating with the receiving cavity and an injection port communicating with the injection flow channel; and a plurality of detection test papers can respectively react to different chemical substances A plurality of the test strips are fixed side by side in the storage cavity, and a plurality of the test strips cannot be taken out of the storage cavity; wherein each of the test strips has an absorption end, and a plurality of The absorption ends are arranged side by side near the liquid collecting tank, and each of the absorption ends forms a gap with the bottom of the liquid collecting tank; wherein the bottom of the liquid collecting tank is inclined The plurality of gaps formed by the plurality of absorbing ends and the bottom of the groove are gradually increased in a direction away from the injection flow path by being adjacent to the injection flow path.