Liquid-phase working section with a triple-sealed cover

Abstract

This application relates to a liquid-phase working part with a triple-seal cover, including: a sealing assembly, the sealing assembly includes a combined test tube and a triple-seal cover, the combined test tube is a variable-diameter cup, including a large-diameter section, a variable-diameter section and a small-diameter section that gradually decreases from the cup mouth to the cup bottom direction. At least one outer wall of the large-diameter section is provided with guiding convex ribs, and the setting direction of the guiding convex ribs is adapted to be consistent with the direction in which the combined test tube is inserted into the detection station. The guiding convex ribs are hollow inside to form an inner cavity, and a relief groove is provided at the top of the guiding convex ribs. The triple-seal cover is hermetically connected to the combined test tube, including a sealing rod and a bottom seal head, a middle seal head and a top seal head that are spaced apart on the sealing rod from the bottom to the top direction. Among them, most of the sealing rod extends into the combined test tube along the length direction, the bottom seal head is hermetically connected to the small-diameter section, and both the middle seal head and the top seal head are located in the large-diameter section.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a liquid-phase working part with a triple-sealing cover. Background Art

[0002] For the existing detection of diseases by extracting secretions, although there are a wide variety of health detection instruments and usually the detection instrument equipment is large in volume. After sampling, during the process of sending the samples to the detection station or the detection center, the transportation environment is variable and has high uncertainty. The specimens and reference substances, as well as the samples and sampling substances, may have adverse phenomena such as state change and quality change in terms of environment, temperature, storage time, and transportation, resulting in the situation that the transportation process affects the detection results.

[0003] Therefore, in order to complete the detection within a short time after sampling, the design of such detection equipment tends to be small in volume, and even the detection equipment can be conveniently taken home by the person to be detected for self-testing at home. However, in order to achieve self-testing at home, the corresponding liquid reagents need to be distributed to the person to be detected together. However, when using a conventional reagent tube alone to store the corresponding reagents, accidents and other unexpected situations are likely to occur during transportation and storage before use, which has relatively large potential safety hazards. Therefore, how to take into account that the detection device has a small volume and still has good sealing performance is an urgent problem to be solved in this field. Summary of the Invention

[0004] In view of this, the present application provides a liquid-phase working part with a triple-sealing cover, which includes a liquid-phase working part, a sealing component, and a developer injection part; a first cavity and a second cavity adjacent to each other are formed on the liquid-phase working part; the sealing component is arranged in the first cavity, and the first cavity is adapted to the outer contour of the sealing component; the developer injection part is arranged in the second cavity, and the developer injection part includes a syringe and a developer addition conduit; a first end of the developer addition conduit is communicated with an injection end of the syringe, and a second end of the developer addition conduit is communicated into the combined test tube through an inner cavity of the guiding rib; wherein, the sealing component includes a combined test tube and a triple-sealing cover; the combined test tube is a variable-diameter cup, including a large-diameter section, a variable-diameter section, and a small-diameter section that gradually decreases from the cup mouth to the cup bottom; at least one outer wall of the large-diameter section is provided with a guiding rib, and the setting direction of the guiding rib is adapted to be consistent with the direction in which the combined test tube is inserted into the detection station; the guiding rib is hollow inside to form an inner cavity, and a relief groove is formed at the top of the guiding rib; the triple-sealing cover is hermetically connected to the combined test tube, and includes a sealing rod, and a bottom sealing head, a middle sealing head, and a top sealing head that are arranged at intervals on the sealing rod from the bottom to the top; wherein, most of the sealing rod extends into the combined test tube along the length direction; the bottom sealing head is hermetically connected to the small-diameter section; both the middle sealing head and the top sealing head are located in the large-diameter section, and the middle sealing head is slightly lower than the bottom of the guiding rib.

[0005] In a possible implementation manner, the middle sealing head is hermetically connected to the large-diameter section, and the middle sealing head can contact the bottom of the large-diameter section where the guiding rib is arranged.

[0006] In a possible implementation manner, the top sealing head is hermetically connected to the large-diameter section, and the top sealing head is arranged at the top position of the large-diameter section.

[0007] In a possible implementation manner, the thickness of the top sealing head in the length direction of the sealing rod is slightly smaller than the size of the relief groove in the length direction of the sealing rod, or the thickness of the top sealing head in the length direction of the sealing rod is greater than or equal to the size of the relief groove in the length direction of the sealing rod; the length of the bottom sealing head in the direction perpendicular to the sealing rod is smaller than the length of the middle sealing head in the direction perpendicular to the sealing rod; the lengths of the middle sealing head and the top sealing head in the direction perpendicular to the sealing rod are equal.

[0008] In a possible implementation manner, the outer contour of the top of the middle sealing head is higher than the bottom of the inner cavity, and a receiving groove is formed between the top sealing head and the inner cavity.

[0009] In one possible implementation, a connecting hole is formed between the first cavity and the second cavity near the top of the liquid phase working part, the top outer contour of the middle sealing head is higher than the bottom of the inner cavity of the guide ridge, and a receiving groove is formed between the top sealing head and the inner cavity; the color developer adding conduit passes through the connecting hole, and the second end of the color developer adding conduit is placed in the receiving groove.

[0010] In a possible implementation, the developer injection unit also includes a power unit and a push piece; the syringe is inverted in the second cavity; the power unit is transmission-connected to the push piece and is located below the syringe, and the push piece can push the push end of the syringe.

[0011] In a possible implementation, it also includes a base and a main control unit; the base is hollow inside, and the main control unit is electrically connected to the power unit; the base is a double-layer structure that is narrow at the top and wide at the bottom, and includes a bottom mounting box and a middle mounting box; the bottom mounting box has a battery mounting position, the middle mounting box is provided with the main control unit, and the base is connected to the liquid phase working part; the top of the bottom mounting box is open, and the bottom of the middle mounting box is provided with a clamping piece, which is clamped and fixed to the side wall of the bottom mounting box, and the mounting hole is opened at the top of the middle mounting box.

[0012] In a possible implementation, the liquid phase working part is plugged and fixed to the base; wherein, a mounting hole is provided at the top of the base, a matching mounting tube is provided at the bottom of the liquid phase working part, and the contour of the mounting tube is consistent with the structure of the first cavity.

[0013] The beneficial effects of the present application are as follows: by designing the combined test tube as a variable diameter cup that becomes smaller from the cup mouth to the cup bottom, a matching triple sealing cover is designed to form a sealing assembly, the bottom sealing head of the triple sealing cover is used to seal the standard reagents stored in the small diameter section, the middle sealing head is used to seal the area of ​​the combined test tube between the middle sealing head and the top sealing head, and finally the top sealing head is located at the top of the combined test tube to serve as a seal for the cup mouth.

[0014] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0016] Figure 1 A cross-sectional view of a triple sealing cover according to an embodiment of the present application is shown;

[0017] Figure 2 A cross-sectional view of a liquid-phase working part with a triple-sealed cover according to an embodiment of the present application is shown;

[0018] Figure 3 A front view of a liquid-phase working part during detection according to an embodiment of the present application is shown;

[0019] Figure 4 A cross-sectional view of a liquid-phase working part during detection according to an embodiment of the present application is shown;

[0020] Figure 5 A side view of a liquid-phase working part during detection according to an embodiment of the present application is shown;

[0021] Figure 6 An assembly drawing of a liquid-phase working part with a screw pusher and a sampler according to an embodiment of the present application is shown;

[0022] Figure 7 A cross-sectional assembly view of a liquid-phase working part of a screw pusher and a sampler according to an embodiment of the present application is shown;

[0023] Figure 8 A side view of a combined test tube according to an embodiment of the present application is shown;

[0024] Figure 9 A cross-sectional view of a combined test tube according to an embodiment of the present application is shown. Detailed implementation manners

[0025] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0026] Among them, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0028] As used herein, the term "exemplary" means "serving as an example, embodiment, or illustration". Any embodiment described herein as "exemplary" should not necessarily be construed as superior or better than other embodiments.

[0029] In addition, for a better description of this application, numerous specific details are given in the following detailed implementation manners. Those skilled in the art should understand that this application can also be implemented without some specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art are not described in detail so as to highlight the gist of this application.

[0030] Figure 1 A cross-sectional view of a triple-sealing cap according to an embodiment of this application is shown; Figure 2 A cross-sectional view of a liquid-phase working part with a triple-sealing cap according to an embodiment already implemented in this application is shown; Figure 3 A front view of a liquid-phase working part during detection according to an embodiment of this application is shown; Figure 4 A cross-sectional view of a liquid-phase working part during detection according to an embodiment of this application is shown; Figure 5 A side view of a liquid-phase working part during detection according to an embodiment of this application is shown; Figure 6 An assembly drawing of a liquid-phase working part with a screw pusher and a sampler according to an embodiment of this application is shown; Figure 7 A cross-sectional assembly view of a liquid-phase working part with a screw pusher and a sampler according to an embodiment of this application is shown; Figure 8 A side view of a combined test tube according to an embodiment of this application is shown; Figure 9 A cross-sectional view of a combined test tube according to an embodiment of this application is shown.

[0031] As Figures 1 - 9As shown in the figure, the liquid-phase working part with a triple-sealing cover includes a sealing assembly. The sealing assembly includes a combined test tube 20 and a triple-sealing cover 80. The combined test tube 20 is a variable-diameter cup, including a large-diameter section 21, a variable-diameter section 22, and a small-diameter section 23 that gradually decreases from the cup mouth to the cup bottom. At least one outer wall of the large-diameter section 21 is provided with a guiding rib 24. The setting direction of the guiding rib 24 is suitable for being consistent with the direction in which the combined test tube 20 is inserted into the detection station. The inside of the guiding rib 24 is hollow to form an inner cavity, and a relief groove 25 is opened at the top of the guiding rib 24. The triple-sealing cover 80 is hermetically connected to the combined test tube 20, including a sealing rod 81, and a bottom sealing head 82, a middle sealing head 83, and a top sealing head 84 that are spaced along the sealing rod 81 from the bottom to the top. Among them, most of the sealing rod 81 extends into the combined test tube 20 along the length direction. The bottom sealing head 82 is hermetically connected to the small-diameter section 23. The middle sealing head 83 and the top sealing head 84 are both located in the large-diameter section 21, and the middle sealing head 83 is slightly lower than the bottom of the guiding rib 24.

[0032] In this embodiment, by designing the combined test tube 20 as a variable-diameter cup that decreases from the cup mouth to the cup bottom, a matching triple-sealing cover 80 is designed to form a sealing assembly. The bottom sealing head 82 of the triple-sealing cover 80 is used to seal the standard reagent stored in the small-diameter section 23. The middle sealing head 83 is used to block the area of the combined test tube 20 between the middle sealing head 83 and the top sealing head 84. Finally, the top sealing head 84 is located at the top of the combined test tube 20 as the seal of the cup mouth.

[0033] In one specific embodiment, the middle sealing head 83 is hermetically connected to the large-diameter section 21, and the middle sealing head 83 can contact the bottom of the large-diameter section 21 where the guiding rib 24 is provided.

[0034] In one specific embodiment, the top sealing head 84 is hermetically connected to the large-diameter section 21, and the top sealing head 84 is provided at the top position of the large-diameter section 21.

[0035] In one specific embodiment, the thickness of the top sealing head 84 in the length direction of the sealing rod 81 is slightly smaller than the size of the relief groove 25 in the length direction of the sealing rod 81, or the thickness of the top sealing head 84 in the length direction of the sealing rod 81 is greater than or equal to the size of the relief groove 25 in the length direction of the sealing rod 81. The length of the bottom sealing head 82 in the direction perpendicular to the sealing rod 81 is smaller than the length of the middle sealing head 83 in the direction perpendicular to the sealing rod 81. The lengths of the middle sealing head 83 and the top sealing head 84 in the direction perpendicular to the sealing rod 81 are equal.

[0036] In one specific embodiment, the top outer contour of the middle sealing head 83 is higher than the bottom of the inner cavity, and a receiving groove 85 is formed between the top sealing head 84 and the inner cavity.

[0037] In one specific embodiment, most of the sealing rod 81 extends into the combined test tube 20 in the length direction, and the bottom sealing head 82 is sealingly connected to the small-diameter section 23; the top outer contour of the middle sealing head 83 is higher than the bottom of the inner cavity, and a receiving groove 85 is formed between the top sealing head 84 and the inner cavity; the top sealing head 84 is sealingly connected to the large-diameter section 21, and the top sealing head 84 is arranged at the top position of the large-diameter section 21. A communication hole is provided in the first cavity and the second cavity of the liquid-phase working part 10 near the top of the liquid-phase working part 10. The syringe 33 is located in the second cavity. The injection end of the syringe 33 communicates with the first end of the color reagent addition conduit 34. The second end of the color reagent addition conduit 34 passes through the communication hole, and the second end of the color reagent addition conduit 34 is placed in the receiving groove 85.

[0038] In this embodiment, the triple sealing of the triple sealing cover 80 includes:

[0039] 1. Bottom liquid seal - the standard reagent in the small-diameter section 23 is sealed by the bottom sealing head 82;

[0040] 2. Sealing of the color reagent addition conduit 34 - the second end of the color reagent addition conduit 34 extends into the receiving groove 85. The top of the middle sealing head 83 is higher than the bottom of the inner cavity of the guiding rib 24. The middle sealing head 83 can seal the second end of the color reagent addition conduit 34 located in the receiving groove 85, preventing the color reagent in the color reagent injection part 30 from directly reacting with the standard reagent in the small-diameter section 23;

[0041] 3. Sealing of the combined test tube 20 - the top sealing head 84 seals the entire combined test tube 20 at the top of the combined test tube 20.

[0042] On the other hand, the present application discloses a liquid-phase working part with a triple sealing cover, including the liquid-phase working part with a triple sealing cover, the liquid-phase working part 10 and the color reagent injection part 30 described in any embodiment. Adjacent first and second cavities are provided on the liquid-phase working part 10. The sealing assembly is arranged in the first cavity, and the outer contour of the first cavity is adapted to that of the sealing assembly. The color reagent injection part 30 is arranged in the second cavity. The color reagent injection part 30 includes a syringe 33 and a color reagent addition conduit 34. The first end of the color reagent addition conduit 34 communicates with the injection end of the syringe 33, and the second end of the color reagent addition conduit 34 passes through the inner cavity of the guiding rib 24 and communicates with the inside of the combined test tube 20.

[0043] In one specific embodiment, a communication hole is provided at the top of the first cavity and the second cavity near the top of the liquid-phase working part 10. The top outer contour of the middle sealing head 83 is higher than the bottom of the inner cavity of the guiding rib 24. A receiving groove 85 is formed between the top sealing head 84 and the inner cavity. The developer adding conduit 34 passes through the communication hole, and the second end of the developer adding conduit 34 is placed in the receiving groove 85.

[0044] In one specific embodiment, the developer injection part 30 further includes a power part 31 and a pushing part 32. The syringe 33 is inverted in the second cavity. The power part 31 is in transmission connection with the pushing part 32, located below the syringe 33, and the pushing part 32 can push the pushing end of the syringe 33.

[0045] In one specific embodiment, it further includes a base 70 and a main control unit 72. The inside of the base 70 is hollow. The main control unit 72 is electrically connected to the power part 31. The base 70 is a double-layer structure with a narrower top and a wider bottom, including a bottom mounting box and a middle mounting box. There is a battery mounting position 71 in the bottom mounting box. The main control unit 72 is arranged in the middle mounting box. The base 70 is connected to the inside of the liquid-phase working part 10. The top of the bottom mounting box is open. A clamping part is provided at the bottom of the middle mounting box and is clamped and fixed to the side wall of the bottom mounting box. The mounting hole is opened at the top of the middle mounting box.

[0046] In one specific embodiment, the liquid-phase working part 10 is plugged and fixed to the base 70. Among them, the top of the base 70 is provided with a mounting hole, the bottom of the liquid-phase working part 10 is provided with a matching mounting cylinder, and the contour of the mounting cylinder is consistent with the structure of the first cavity.

[0047] In one specific embodiment, the top of the triple sealing cover 80 has a handle part, or the top of the triple sealing cover 80 has a lifting ear, and a hanging hole is opened on the lifting ear.

[0048] In one specific embodiment, it further includes a heat conducting part 60. The heat conducting part 60 is made of metal material, and the heat conducting part 60 at least covers the cup wall of the combined test tube 20.

[0049] In one specific embodiment, the heat conducting part 60 is in a cylindrical structure, and the bottom of the heat conducting part 60 is closed.

[0050] In one specific embodiment, the heating part 50 is a thin film heating sheet. The thin film heating sheet is in a ring shape and is arranged in a ring in the first cavity, suitable for attaching to the outer periphery of the part to be heated.

[0051] In one specific embodiment, the heating part 50 is hollowed and grooved at the position where the liquid-phase working part 10 is provided with a reading window 11, and the heat conducting part 60 is hollowed and grooved at the position where the liquid-phase working part 10 is provided with a reading window 11.

[0052] In one specific embodiment, a temperature sensor 74 and an alarm module 75 are further included. The temperature sensor 74 is disposed in the first cavity, electrically connected to the main control unit 72, and is disposed adjacent to the heating part 50. The alarm module 75 is installed in the base 70 and is electrically connected to the main control unit 72.

[0053] In one specific embodiment, a microswitch 73 is further included. The microswitch 73 is disposed at the top side of one side of the liquid phase working part 10, and a wire threading groove 12 is formed on the side wall of the liquid phase working part 10 where the microswitch 73 is disposed. The microswitch 73 is electrically connected to the main control unit 72 and is adapted to contact the sampler 40.

[0054] It should also be noted that the combined test tube 20 installed in the first cavity is set as a variable-diameter cup. The inner side of the combined test tube 20 is adapted to the sampler 40, and the outer side of the combined test tube 20 matches the structure of the first cavity.

[0055] Specifically, the combined test tube 20 includes a large-diameter section 21, a variable-diameter section 22, and a small-diameter section 23 with widths gradually decreasing from the cup mouth to the cup bottom. The large-diameter section 21 is used to adapt to the sampler 40 extending into the cup. The small-diameter section 23 can be consistent with the size of a conventional detection tube, and the two are connected into a whole through the variable-diameter section 22 to increase the versatility and adaptability of the combined test tube of the present application. Moreover, guiding convex ribs 24 are provided on the outer wall of the large-diameter section 21, which are convenient for placing the combined test tube into the liquid phase working part 10 and have a certain positioning and stabilizing effect. The guiding convex ribs 24 are hollow, and a relief groove 25 is formed at the top of the guiding convex ribs 24. Compared with a conventional detection reagent tube, when the sampler 40 extends into the combined test tube 20, the color developer can still be added to the combined test tube 20 through the relief groove 25, the inside of the hollow guiding convex ribs 24, and the gap between the sampler 40 and the combined test tube 20 as a liquid passage. This design is quite ingenious. When designing the liquid phase working part 10 adapted to the combined test tube, it is also beneficial to the miniaturized design of the whole detection station, so as to realize a small-volume liquid phase working part 10, which has the advantages of low cost and convenient mass production.

[0056] It should be particularly pointed out that the top referred to in this article is Figure 1 the upward direction in Figure 1 it, and the bottom is Figure 1 the downward direction in

[0057] In one specific embodiment, the liquid-phase working part 10 is integrally in a cuboid structure, the length direction of the cuboid is perpendicular to the base 70, and reading windows are provided on opposite sides of the liquid-phase working part 10. An installation groove is provided at the top of the liquid-phase working part 10, and the installation groove is adapted to match the upper end stop wall of the syringe of the sampler 40. The microswitch 73 is arranged on one side of the top, and the first cavity is opened at the bottom of the installation groove.

[0058] In one specific embodiment, the specific sampling process of the sampler 40 is as follows: Hold the ends of the shell 41 and the knob 47. It is advisable that there is no movement between the non-impeding structures. Align with the natural cavity organ and operate on the forms of cave, tubular, hole, slit and gap. Press and twist the knob 47 to make the knob 47 advance spirally along the chute 43, and the sampling cap 46 carrying the flocked material extends out of the sampling end of the shell 41. Slowly extend the sampling cap 46 of the shell 41 to scrape the wall surfaces of the cave, tubular, hole, slit and gap forms of the organ, forming a sampling process of painless and comfortable scraping to obtain the detection substance, and realizing the painless and comfortable sampling process.

[0059] More specifically, the specific detection process of the liquid-phase working part of the present application is as follows: Insert the sampler 40 into the combined test tube 20 inside the liquid-phase working part 10, so that the upper end stop wall of the shell 41 touches the intelligent microswitch 73, forming an intelligent detection of the operation process. This is the main control unit starting to work, and the alarm module 75 sounds an alarm. The main control unit sends a signal to the heating part 50 to start heating. Wait until the temperature sensor 74 detects and reaches the rated temperature (the heating time is generally 10 minutes, and the rated temperature is usually the normal human body temperature, which can be 35°-40°, etc.). The alarm module 75 alarms again, and the alarm sound starts the constant temperature control. During the detection process, the standard substance reagent and the sampled substance sample have a standard reaction time. After the standard reaction time is completed, it alarms again, and the alarm sound starts to add the color developer. The main control unit starts the power part 31, rotates regularly, and the pushing member 32 spirally rises, pushing the color developer in the syringe 33 into the color developer adding conduit 34, and then through the gap between the combined test tube 20 and the sampler 40, so that the color developer enters the combined test tube 20. Observe the color reaction result through the reading window, observe the detection process and compare with the specimen substance, compare the standard substance and the detected substance by observing the color, detect and read the specimen control sample, and detect various physical signs indicators.

[0060] In addition, for the main control unit 72 mentioned in the present application, those skilled in the art can directly adopt the existing technology to realize it, and then realize the heating and self-checking of the whole device. After the reactions of the standard substance, the addition of the color developer, and the color reaction are all completed, various physical signs indicators of the detection can be obtained after observation. Specific details are not elaborated too much in this article.

[0061] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of technologies in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A liquid-phase working part with a triple-sealed cover, characterized in that, It includes a liquid phase working part, a sealing component and a color developer injection part; The sealing assembly includes a combined test tube and a triple sealing cover; The combined test tube is a variable diameter cup, including a large diameter section, a variable diameter section and a small diameter section which gradually decrease from the cup mouth to the cup bottom; The liquid phase working part is provided with a first cavity and a second cavity adjacent to each other; The sealing assembly is disposed in the first cavity, and the first cavity is adapted to an outer contour of the sealing assembly; The developer injection unit is disposed in the second cavity, and the developer injection unit includes a syringe and a developer adding conduit; At least one side outer wall of the large diameter section is provided with a guide ridge, and the setting direction of the guide ridge is consistent with the direction in which the combined test tube is inserted into the detection station; The first end of the developer adding conduit is connected to the injection end of the syringe, and the second end of the developer adding conduit is connected to the combined test tube through the inner cavity of the guide convex ridge; The guide ridge is hollow inside to form an inner cavity, and a clearance groove is formed on the top of the guide ridge; The triple sealing cover is sealed and connected to the combined test tube, and comprises a sealing rod and a bottom sealing head, a middle sealing head and a top sealing head which are arranged at intervals on the sealing rod from the bottom to the top; Wherein, most of the sealing rods extend into the combined test tube along the length direction; The bottom sealing head is sealed and connected to the small diameter section; The middle sealing head and the top sealing head are both located in the large diameter section, and the middle sealing head is slightly lower than the bottom of the guide ridge.

2. The liquid-phase working part with a triple-sealed cover according to claim 1, characterized in that, The middle sealing head is sealingly connected to the large diameter section, and the middle sealing head can contact the bottom of the large diameter section where the guide ridge is arranged.

3. The liquid-phase working part with a triple-sealed cover according to claim 1, characterized in that, The top sealing head is sealingly connected to the large diameter section, and the top sealing head is arranged at the top position of the large diameter section.

4. The liquid-phase working part with a triple-seal cover according to claim 1, wherein, The thickness of the top sealing head in the length direction of the sealing rod is slightly smaller than the dimension of the clearance groove in the length direction of the sealing rod, or the thickness of the top sealing head in the length direction of the sealing rod is greater than or equal to the dimension of the clearance groove in the length direction of the sealing rod; The length of the bottom sealing head in a direction perpendicular to the sealing rod is shorter than the length of the middle sealing head in a direction perpendicular to the sealing rod; The middle sealing head and the top sealing head have the same length in a direction perpendicular to the sealing rod.

5. The liquid-phase working part with a triple-sealed cover according to claim 1, characterized in that The top outer contour of the middle sealing head is higher than the bottom of the inner cavity, and a receiving groove is formed between the top sealing head and the inner cavity.

6. The liquid-phase working part with a triple-sealed cover according to any one of claims 1-5, characterized in that, The first cavity and the second cavity are provided with a connecting hole near the top of the liquid phase working part, the top outer contour of the middle sealing head is higher than the bottom of the inner cavity of the guide ridge, and a receiving groove is formed between the top sealing head and the inner cavity; The developer adding conduit passes through the communicating hole, and the second end of the developer adding conduit is placed in the containing tank.

7. The liquid-phase working part with a triple-sealed cover according to any one of claims 1-5, characterized in that The developer injection unit also includes a power unit and a push member; The syringe is inverted in the second cavity; The power part is transmission-connected with the push member and is located below the syringe, and the push member can push the push end of the syringe.

8. The liquid-phase working part with a triple-sealing cover according to claim 7, characterized in that, It also includes a base station and a main control unit; The interior of the base is hollow, and the main control unit is electrically connected to the power unit; the base is a double-layer structure with a narrower upper part and a wider lower part, including a bottom mounting box and a middle mounting box; The bottom mounting box has a battery mounting position, the main control unit is arranged in the middle mounting box, and the base is in communication with the liquid-phase working part; The top of the bottom mounting box is open, the bottom of the middle mounting box is provided with a clamping part, which is clamped and fixed with the side wall of the bottom mounting box, and the mounting hole is opened at the top of the middle mounting box.

9. The liquid-phase working part with a triple-seal cover according to claim 8, characterized in that The liquid-phase working part is fixedly plugged with the base; Among them, a mounting hole is opened at the top of the base, a matching mounting cylinder is arranged at the bottom of the liquid-phase working part, and the contour of the mounting cylinder is consistent with the structure of the first cavity.

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