Small sample injection bottle

Abstract

The utility model relates to the field of sealing bottles, and discloses a small sample injection bottle which comprises a bottle body, a bottle neck and a sealing cover, the bottle neck is arranged at an opening of the bottle body and communicated with the bottle body, an opening for pouring out a sample is formed in the end of the bottle neck, the sealing cover is sleeved on the bottle neck and used for sealing the opening of the bottle neck, and a sealing ring is arranged in the sealing cover. When the sealing cover covers the bottle neck, the sealing ring abuts against the end of the bottle neck. The sealing cover comprises an outer sealing part and an inner sealing part, the inner sealing part is sleeved with the outer sealing part and slides in the outer sealing part, the sealing ring is arranged in the inner sealing part, and the inner sealing part is sleeved with the bottle neck and makes contact with the bottle neck. The outer sealing part slides along the inner sealing part and abuts against the bottle body. The inner sealing part pressurizes the sealing ring in a threaded connection mode to form pressure sealing, then the transition position of the bottle neck and the inner sealing part is sealed through the outer sealing part, the double-sealing effect is formed, and the sealing performance of the small sample injection bottle is improved.

Description

Technical Field

[0001] The utility model relates to the field of sealed bottles, in particular to a small sampling bottle. Background Art

[0002] Injection vials are bottles commonly used in laboratories for dispensing reagents and are generally used to dispense liquid reagents required for experiments. Some liquid reagents used in experiments are highly volatile and toxic, so they need to be sealed and stored before use after dispensing. General reagent bottles are sealed with threads and conventional sealing rings. For highly volatile reagents, the sealing effect of relying solely on sealing rings is not good, which often causes the reagents to evaporate and become ineffective.

[0003] In response to this defect, the National Intellectual Property Administration authorized and announced a Chinese utility model patent with the announcement number CN216255918U on October 11, 2021, which discloses a sealed bottle to prevent the volatilization of essential oils. The bottle body is a double-layer glass structure and the gap between the double-layer glass is a vacuum environment, so that the temperature has little effect on the essential oil in the bottle, reducing the volatilization of the essential oil. The sealing method of this sealed bottle is still to seal with a threaded seal ring, and its sealing performance has not been improved, and the reagent is still at risk of volatilization failure. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a small injection bottle, which improves the sealing performance at the bottle mouth and reduces the risk of reagent failure due to volatilization.

[0005] In order to solve the above technical problems, the utility model provides a sample injection vial, comprising a bottle body, a bottleneck and a sealing cover, wherein the bottleneck is arranged at the opening of the bottle body and communicated with the bottle body, an opening for pouring out the sample is provided at the end of the bottleneck, the sealing cover is sleeved on the bottleneck to close the opening of the bottleneck, a sealing ring is arranged inside the sealing cover, and the sealing ring abuts against the end of the bottleneck when the sealing cover is covered on the bottleneck;

[0006] The sealing cover comprises an outer sealing part and an inner sealing part, wherein the inner sealing part is sleeved in the outer sealing part and slides in the outer sealing part, the sealing ring is arranged in the inner sealing part, the inner sealing part is sleeved on the bottleneck and contacts the bottleneck, and the outer sealing part slides along the inner sealing part and abuts against the bottle body.

[0007] Furthermore, a retaining edge is provided on one side of the bottle body close to the bottleneck, and the retaining edge is arranged around the bottleneck with the bottleneck as the center. When the outer sealing part abuts against the bottle body, the outer wall of the outer sealing part abuts against the inner wall of the retaining edge.

[0008] Furthermore, a first internal thread is provided on the side wall of the baffle in contact with the outer sealing portion, a first external thread adapted to the first internal thread is provided on the outer sealing portion, a second internal thread is provided on the side of the inner sealing portion in contact with the bottleneck, and a second external thread adapted to the second internal thread is provided on the side wall of the bottleneck.

[0009] Furthermore, the inner sealing part comprises an inner sleeve cover, the inner sleeve cover is sleeved on the bottleneck, a sealing groove is provided in the inner sleeve cover, and the sealing ring is clamped and fixed in the sealing groove;

[0010] A slide groove is provided on the outer wall of the inner cover along the height direction of the inner cover, a slider sliding along the slide groove is provided in the slide groove, the outer sealing part is sleeved on the outside of the inner cover and the outer sealing part is fixedly connected to the slider.

[0011] Further, the outer sealing part comprises an outer cover and an auxiliary sealing member, the inner cover is provided with an installation cavity, the top and bottom of the installation cavity are open, and the auxiliary sealing member slides from the top to the bottom in the installation cavity;

[0012] The outer cover is sleeved on the inner cover and the inner wall of the outer cover is connected to the slider. One end of the auxiliary seal extends out from the top of the installation cavity and is fixedly connected to the outer cover.

[0013] Further, the auxiliary sealing member comprises a push rod, one end of the push rod extending into the installation cavity is provided with a sealing gasket, and one end of the push rod facing away from the sealing gasket is fixedly connected to the outer cover;

[0014] When the outer cover moves toward the bottle body, the sealing gasket is pushed out of the installation cavity and placed between the retaining edge and the bottleneck. When the outer cover contacts the retaining edge, the outer cover presses against the sealing gasket.

[0015] Furthermore, the auxiliary sealing component includes a sealing membrane and an inflation rod, the sealing membrane is arranged at the opening at the bottom of the installation cavity and closes the opening, a piston is arranged in the installation cavity, one end of the inflation rod is inserted into the installation cavity and connected to the piston, and the other end of the inflation rod extends from the opening at the top of the installation cavity and is connected to the outer cover, when the outer cover moves toward the bottle body, the piston is pushed to inflate the sealing membrane, and when the outer cover contacts the blocking edge, the outer cover presses against the sealing membrane.

[0016] Furthermore, a portion of the outer cover that contacts the retaining edge is provided with a plurality of slits, each of the slits is fixedly provided on the outer cover along the circumferential direction of the outer cover, and each of the slits is opened along the height direction of the outer cover.

[0017] Furthermore, a sealing plug is provided in the inner sealing cover, and when the inner cover is sleeved on the bottleneck, the sealing plug is inserted into the bottleneck and abuts against the inner wall of the bottleneck.

[0018] Furthermore, the bottle body is a double-layer structure with a double-layer internal vacuum, and the bottle body is a conical bottle with a narrow top and a wide bottom.

[0019] Through the above technical solution, the beneficial effects of the utility model are as follows:

[0020] The utility model discloses an injection vial, comprising an outer sealing part and an inner sealing part, wherein the inner sealing part is sealed by a sealing ring and is sleeved on a bottleneck by a threaded fixing method, that is, the sealing ring is pressurized by a threaded connection method to form a pressure seal, and then the outer sealing part is used to seal a transition between the bottleneck and the inner sealing part, so as to form a double sealing effect, thereby improving the sealing performance of the injection vial; the bottle body can be a double-layer structure, and a vacuum is drawn between the double-layer structures, so that the external temperature has less influence on a reagent sample stored in the bottle body, thereby reducing the possibility of volatilization of the reagent sample.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the first embodiment of the sample injection vial in the utility model;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of the sealing cover of the first embodiment of the injection vial in the utility model;

[0025] Figure 3 It is a structural schematic diagram of a second embodiment of the sample injection vial in the utility model;

[0026] Figure 4 It is a schematic cross-sectional structure diagram of the sealing cover in the second embodiment of the injection vial in the utility model.

[0027] Description of Reference Numerals

[0028] 1 bottle body 2 bottlenecks

[0029] 3 Sealing cover 31 External sealing part

[0030] 311 outer cover 312 auxiliary seal

[0031] 3121 push rod 3122 sealing gasket

[0032] 3123 inflation rod 3124 piston

[0033] 3125 Sealing Film 3126 Gap

[0034] 32 inner sealing part 321 inner cover

[0035] 322 slide 323 slider

[0036] 33 sealing groove 34 sealing ring

[0037] 4th stopper 5th sealing plug DETAILED DESCRIPTION

[0038] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation modes described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the specific implementation modes described below.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "provided with", "installed", and "connected" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, a fixed connection, a detachable connection, an integral connection, or a connection between two elements or an interaction between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", "third", "fourth" and "fifth" may explicitly or implicitly include one or more of the said features.

[0041] In the present invention, unless otherwise specified, the directional words used, such as "inside" and "outside", are defined as the inside and outside of the corresponding parts. Specifically, in the drawings provided in the present invention, the orientation or position relationship used is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The orientation terms of the present invention should be understood in conjunction with the actual installation state.

[0042] See also Figure 1 and Figure 2 The utility model provides a small injection vial, comprising a bottle body 1 and a bottleneck 2, wherein the bottle body 1 and the bottleneck 2 can be integrally formed for pouring out the reagent loaded into the bottle body 1. The bottle body 1 can be a hollow cylindrical shape or a conical shape with a large bottom and a small top, or any other shape. The bottle body 1 is a double-layer structure, and air is evacuated between the double-layer structures to form a vacuum environment, so as to reduce the influence of the ambient temperature on the reagent in the bottle body 1, thereby reducing the possibility of the reagent volatilizing.

[0043] The sealing cover 3 is set on the bottleneck 2 to seal the reagent in the bottle, which can effectively reduce the possibility of the reagent volatilizing and escaping from the bottleneck 2. The bottleneck 2 can be provided with an external thread (for the convenience of distinction, referred to as the second external thread in this application). The same sealing cover 3 can also be provided with an internal thread (for the convenience of distinction, referred to as the second external thread in this application). The second internal thread on the sealing cover 3 is matched with the second external thread on the bottleneck 2, and the sealing cover 3 can be firmly fixed on the bottleneck 2. A sealing ring 34 can also be placed in the sealing cover 3. A sealing groove 33 for placing the sealing ring 34 can be provided inside the specific sealing cover 3, and the sealing ring 34 can be placed in the sealing groove 33. When the sealing cover 3 is covered on the bottleneck 2, the sealing ring 34 is pressed against the bottle mouth of the bottleneck 2 to form a seal. Even if the reagent in the injection vial volatilizes, the volatilized reagent can be sealed in the injection vial. The shape of the bottle body 1 can be conical, with a narrow end close to the bottleneck 2 at the upper end and a wide end away from the bottleneck 2, further reducing the volatilization of the liquid in the vial. The bottle body 1 includes an outer layer and an inner layer, and a vacuum needs to be drawn between the outer layer and the inner layer to reduce the influence of the external temperature on the reagent in the bottle body 1 .

[0044] The sealing cover 3 can be a single-layer cover with an internal thread, and a sealing groove 33 is directly formed on the single-layer cover, a sealing ring 34 is placed in the sealing groove 33, and when the single-layer cover is fixed on the bottle mouth by threaded connection, the sealing ring 34 in the sealing groove 33 abuts against the bottle mouth on the bottleneck 2 to form a sealing effect.

[0045] The sealing cover 3 can also be a double-layer cover, that is, the sealing cover 3 includes an outer sealing part 31 and an inner sealing part 32. The inner sealing part 32 is sleeved on the bottleneck 2 and is still fixedly connected to the bottleneck 2 by a threaded connection. The sealing ring 34 is installed on the inner sealing part 32. When the inner sealing part 32 is sleeved on the bottleneck 2, the bottleneck 2 is abutted against the bottle mouth. The outer sealing part 31 is sleeved on the outside of the inner sealing part 32, and the outer sealing part 31 can slide along the height direction of the inner sealing part 32 so that the outer sealing part 31 can abut against the bottle body 1. The bottle body 1 and the outer sealing part 31 can also be threadedly connected, that is, the inner sealing part 32 seals the bottle mouth once, and the outer sealing part 31 is sealed again by connecting with the bottle body 1, thereby enhancing the sealing performance of the injection vial.

[0046] The portion of the bottle body 1 that contacts the outer sealing part 31 is provided with a retaining edge 4. The retaining edge 4 is circular and surrounds the bottleneck 2 with the bottleneck 2 as the center. The gap between the retaining edge 4 and the bottleneck 2 is only for the outer sealing part 31 to be inserted. When the outer sealing part 31 slides and inserts into the gap, the outer wall of the outer sealing part 31 abuts against the inner wall of the retaining edge 4, so that the outer sealing part 31 abuts against the bottleneck 2 more tightly, further enhancing the sealing performance. The retaining edge 4 and the outer sealing part 31 can be connected by a threaded connection, a first external thread is provided on the outer wall of the outer sealing part 31, and a first internal thread is provided on the end surface of the retaining edge 4 facing the outer sealing part 31. When the outer sealing part 31 is fixed to the retaining edge 4 by a threaded connection, the outer sealing part 31 will form an extrusion seal on the gap between the bottleneck 2 and the inner sealing part 32, and then cooperate with the inner sealing part 32 to form a secondary seal on the bottle mouth of the injection vial, thereby enhancing the sealing performance.

[0047] The inner sealing part 32 includes an inner sleeve cover 321. The structure of the inner sleeve cover 321 is basically the same as that of the single-layer cover. The only difference is that the inner sleeve cover 321 needs to cooperate with the outer sealing part 31. Therefore, a slide groove 322 needs to be provided on the outer wall of the inner sleeve cover 321. The slide groove 322 is provided along the height direction of the inner sleeve cover 321. A slider 323 is engaged in the slide groove 322. The slider 323 can slide along the slide groove 322 and cannot be separated from the slide groove 322. The outer sealing part 31 is sleeved on the outside of the inner sleeve cover 321 and an annular groove is provided on the inner wall of the outer sealing part 31. The slider 323 is engaged in both the slide groove 322 of the inner sleeve cover 321 and the annular groove of the outer sealing part 31. The slider 323 can slide in the annular groove, so that the outer sealing part 31 can slide along the height direction of the inner sleeve cover 321 without affecting the rotation of the outer sealing part 31. The edge of the outer sealing portion 31 can be in contact with the outer wall of the bottle body 1, and the outer sealing portion 31 is fixed to the retaining edge 4 by a threaded connection, so that a seal is formed again outside the inner sleeve cover 321 when the inner sleeve cover 321 is sealed, thereby enhancing the sealing performance of the injection vial.

[0048] A sealing plug 5 can be fixed inside the inner sleeve cover 321, and the sealing plug 5 is fixed on the end surface of the inner sleeve cover 321. When the inner sleeve cover 321 is fitted on the bottleneck 2, the sealing plug 5 can be directly inserted into the bottle mouth and abut against the inner wall of the bottleneck 2, that is, the sealing plug 5 is deformed after being inserted into the bottleneck 2, so as to ensure that the sealing plug 5 fits tightly against the bottleneck 2 to achieve a good sealing effect.

[0049] The outer sealing part 31 includes an outer cover 311 and an auxiliary seal 312, and an annular groove is provided on the end surface opposite to the outer cover 311 and the slider 323. The auxiliary seal 312 needs to be installed inside the inner cover 321, and the outer cover 311 can push the auxiliary seal 312 out of the inner cover 321 when it moves downward. Specifically, an installation cavity needs to be provided in the inner cover 321 for installing the auxiliary seal 312, and the bottom and top openings of the installation cavity are provided for the auxiliary seal 312 to extend out of the installation cavity. The opening at the bottom of the inner cover 321 is annular, and the opening at the top of the inner cover 321 can be provided in a plurality of numbers along the circumferential direction of the inner cover 321, that is, the inner layer and the outer layer of the inner cover 321 separated by the installation cavity are connected only by the portion between the adjacent openings at the top of the installation cavity. One end of the auxiliary seal 312 extends out of the opening at the top of the inner cover 321 and abuts against the top of the outer cover 311. In order not to affect the rotation of the outer cover 311, the outer cover 311 and the auxiliary seal 312 can only be in contact with each other. When the outer cover 311 moves, it can push the auxiliary seal 312 to extend from the bottom of the inner cover 321, and finally between the inner cover 321 and the outer cover 311. At this time, the outer cover 311 is pushed by the stopper 4 and then contacts the auxiliary seal 312, that is, the junction between the inner cover 321 and the bottleneck 2 is sealed again, thereby enhancing the sealing performance of the injection vial.

[0050] An embodiment of the auxiliary seal 312 includes a push rod 3121, and a sealing gasket 3122 is provided at one end of the push rod 3121 extending into the installation cavity, and the end of the push rod 3121 facing away from the sealing gasket 3122 is fixedly connected to the outer cover 311. When the outer cover 311 moves toward the bottle body 1, the sealing gasket 3122 is pushed out of the installation cavity and finally pushed to be placed between the retaining edge 4 and the bottle neck 2. When the outer cover 311 contacts the retaining edge 4, the outer cover 311 presses against the sealing gasket 3122. When in use, the inner cover 321 is first directly fitted on the bottle neck 2. At this time, the outer cover 311 is at the top of the slide groove 322, exposing most of the inner cover 321, so the inner cover 321 can be directly rotated until the inner cover 321 is rotated into place, closing the bottle mouth to form the first seal. After the first seal is formed, the outer cover 311 can be pushed to move along the slide groove 322 to the bottom of the slide groove 322. A circle of push pads is fixed at the bottom of the outer cover 311. After the outer cover 311 is rotated to the right position, the push pads can push the sealing gasket 3122. When the outer cover 311 moves, the sealing gasket 3122 is pushed out of the installation cavity, so that the sealing gasket 3122 is placed in the gap 3126 between the retaining edge 4 and the bottleneck 2 and covers the joint between the inner cover 321 and the bottleneck 2. Then, the outer cover 311 is rotated. When the outer cover 311 rotates, the slider 323 and the outer cover 311 form a relative movement along the annular groove, so that the slider 323 does not interfere with the rotation of the outer cover 311. As the outer cover 311 rotates, the outer cover 311 is also connected to the retaining edge 4 through threads and finally fixed to the retaining edge 4. The retaining edge 4 simultaneously pushes the outer cover 311 so that the outer cover 311 abuts against the sealing gasket 3122 to form a secondary seal, and cooperates with the inner sealing part 32 to form a secondary seal on the bottle mouth of the injection vial to enhance the sealing performance.

[0051] Reference Figure 3 and Figure 4 Another embodiment of the auxiliary seal 312 includes a sealing membrane 3125 and an inflation rod 3123. The sealing film 3125 needs to cover the opening at the bottom of the inner sleeve cover 321 and close the opening at the bottom of the inner sleeve cover 321. One end of the inflation rod 3123 is inserted into the installation cavity through the opening at the top of the inner sleeve cover 321. A piston 3124 needs to be placed in the installation cavity. The end of the inflation rod 3123 inserted into the installation cavity is fixed to the piston 3124, and the other end of the inflation rod 3123 extends out from the opening at the top of the inner sleeve cover 321. When the outer sleeve cover 311 moves downward, the piston 3124 can be driven to move by pushing the inflation rod 3123, and the air in the installation cavity is compressed to expand the sealing film 3125. At this time, the outer sleeve cover 311 moves to contact the retaining edge 4, and the outer sleeve cover 311 is rotated. The inner wall of the outer sleeve cover 311 abuts against the expanded sealing film 3125 to form a secondary seal, which cooperates with the inner sealing part 32 to form a secondary seal at the bottle mouth of the injection vial to enhance the sealing performance.

[0052] When the auxiliary seal 312 is used, the outer cover 311 needs to abut against the outer wall of the sealing film 3125 or the sealing gasket 3122. Therefore, a plurality of slits 3126 can be provided along the height direction of the outer cover 311, and the plurality of slits 3126 are evenly distributed on the outer cover 311 along the circumferential direction of the outer cover 311. When the outer cover 311 abuts against the retaining edge 4, the outer cover 311 is more likely to deform, thereby being able to squeeze the sealing film 3125 or the sealing gasket 3122 to form a good secondary sealing effect, and cooperate with the inner sealing part 32 to form a secondary seal at the bottle mouth of the injection vial, thereby enhancing the sealing performance.

[0053] The utility model provides a sample injection vial, which is sealed by a sealing cover 3 for dispensing reagent samples. The sealing cover 3 is a double-layer sealing structure. Specifically, the sealing cover 3 includes an outer sealing part 31 and an inner sealing part 32. When in use, the inner sealing part 32 is first directly fitted on the bottleneck 2 and the bottleneck 2 and the inner sealing part 32 are connected by threads, and the sealing ring 34 is pressed against the bottle mouth to achieve sealing, and then the outer sealing part 31 is used to seal the joint between the inner sealing part 32 and the bottleneck 2 to achieve secondary sealing. The reagent sample stored in the bottle body 1 is sealed twice by the outer sealing part 31 and the inner sealing part 32, which improves the sealing of the sample injection vial, so that the reagent sample volatilizes less. Further, the bottle body 1 can be a double-layer structure, and the double-layer structure is vacuumed, so that the external temperature has less influence on the reagent sample stored in the bottle body 1, reducing the possibility of reagent sample volatilization.

[0054] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "a specific implementation", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0057] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A sample injection vial, characterized in that: include: A bottle body (1), a bottle neck (2) and a sealing cover (3), wherein the bottle neck (2) is arranged at the opening of the bottle body (1) and is in communication with the bottle body (1), an opening for pouring out a sample is provided at the end of the bottle neck (2), the sealing cover (3) is fitted on the bottle neck (2) and is used to seal the opening of the bottle neck (2), a sealing ring (34) is provided inside the sealing cover (3), and when the sealing cover (3) is covered on the bottle neck (2), the sealing ring (34) abuts against the end of the bottle neck (2); The sealing cover (3) comprises an outer sealing portion (31) and an inner sealing portion (32); the inner sealing portion (32) is sleeved inside the outer sealing portion (31) and the inner sealing portion (32) slides inside the outer sealing portion (31); the sealing ring (34) is arranged inside the inner sealing portion (32); the inner sealing portion (32) is sleeved on the bottleneck (2) and contacts the bottleneck (2); the outer sealing portion (31) slides along the inner sealing portion (32) and abuts against the bottle body (1).

2. A sample injection vial according to claim 1, characterized in that: A retaining edge (4) is provided on one side of the bottle body (1) close to the bottleneck (2); the retaining edge (4) is arranged around the bottleneck (2) with the bottleneck (2) as the center; when the outer sealing portion (31) abuts against the bottle body (1), the outer side wall of the outer sealing portion (31) abuts against the inner side wall of the retaining edge (4).

3. A sample injection vial according to claim 2, characterized in that: A first internal thread is provided on the side wall of the retaining edge (4) in contact with the outer sealing portion (31), and a first external thread adapted to the first internal thread is provided on the outer sealing portion (31). A second internal thread is provided on the side of the inner sealing portion (32) in contact with the bottleneck (2), and a second external thread adapted to the second internal thread is provided on the side wall of the bottleneck (2).

4. A sample injection vial according to claim 2 or 3, characterized in that: The inner sealing portion (32) comprises an inner sleeve cover (321), the inner sleeve cover (321) is sleeved on the bottleneck (2), a sealing groove (33) is provided in the inner sleeve cover (321), and the sealing ring (34) is clamped and fixed in the sealing groove (33); A slide groove (322) is provided on the outer wall of the inner cover (321) along the height direction of the inner cover (321), and a slider (323) is provided in the slide groove (322) for sliding along the slide groove (322), and the outer sealing portion (31) is sleeved on the outside of the inner cover (321) and the outer sealing portion (31) is fixedly connected to the slider (323).

5. A sample injection vial according to claim 4, characterized in that: The outer sealing part (31) comprises an outer cover (311) and an auxiliary sealing member (312); a mounting cavity is provided inside the inner cover (321); the top and bottom of the mounting cavity are open; and the auxiliary sealing member (312) slides from the top to the bottom in the mounting cavity; The outer cover (311) is sleeved on the inner cover (321) and the inner wall of the outer cover (311) is connected to the slider (323); one end of the auxiliary seal (312) extends out from the top of the installation cavity and is fixedly connected to the outer cover (311).

6. A sample injection vial according to claim 5, characterized in that: The auxiliary sealing member (312) comprises a push rod (3121), one end of the push rod (3121) extending into the installation cavity is provided with a sealing gasket (3122), and one end of the push rod (3121) facing away from the sealing gasket (3122) is fixedly connected to the outer cover (311); When the outer cover (311) moves toward the bottle body (1), it pushes the sealing gasket (3122) out of the installation cavity and is placed between the retaining edge (4) and the bottleneck (2); when the outer cover (311) contacts the retaining edge (4), the outer cover (311) presses against the sealing gasket (3122).

7. A sample injection vial according to claim 5, characterized in that: The auxiliary sealing member (312) comprises a sealing membrane (3125) and an inflation rod (3123), wherein the sealing membrane (3125) is arranged at the opening at the bottom of the installation cavity and closes the opening, wherein a piston (3124) is arranged in the installation cavity, wherein one end of the inflation rod (3123) is inserted into the installation cavity and connected to the piston (3124), wherein the other end of the inflation rod (3123) extends out from the opening at the top of the installation cavity and is connected to the outer cover (311), wherein when the outer cover (311) moves toward the bottle body (1), the piston (3124) is pushed to inflate the sealing membrane (3125), and when the outer cover (311) contacts the retaining edge (4), the outer cover (311) presses against the sealing membrane (3125).

8. A sample injection vial according to claim 6, characterized in that: A plurality of slits (3126) are provided at the portion of the outer cover (311) that contacts the retaining edge (4), each of the slits (3126) being fixed on the outer cover (311) along the circumferential direction of the outer cover (311), and each of the slits (3126) being opened along the height direction of the outer cover (311).

9. The injection vial according to claim 1, characterized in that: A sealing plug (5) is arranged inside the sealing cover (3); when the sealing cover (3) is sleeved on the bottleneck (2), the sealing plug (5) is inserted into the bottleneck (2) and abuts against the inner wall of the bottleneck (2).

10. The injection vial according to claim 1, characterized in that: The bottle body (1) is a double-layer structure, and the interior of the double-layer structure is vacuum; the bottle body (1) is a conical bottle with a narrow top and a wide bottom.

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