Limiting device and experimental container

Abstract

The utility model relates to the technical field of experimental appliances, and provides a limiting device and an experimental container, the limiting device is suitable for a container body and a plug body of the container body, the limiting device comprises a limiting ring group and a limiting ring group, the limiting ring group comprises a first limiting ring and a second limiting ring, the first limiting ring is correspondingly sleeved and limited on the plug body, and the second limiting ring is sleeved and limited on the plug body; the second limiting ring is correspondingly sleeved and limited on the container body; the adjusting assembly comprises a first adjusting part and a second adjusting part, the first adjusting part is arranged on the first limiting ring, the second adjusting part is arranged on the second limiting ring, and the first adjusting part and the second adjusting part are detachably connected in a clamped mode in the plug installing direction of the opening of the plug body and the opening of the container body. In this way, the adjusting assembly can limit the container body and the plug in position, the plug is prevented from being separated from the opening of the container body, the requirement of a user for shaking of the container is met, meanwhile, the clamping mode is detachable, disassembly and assembly are easy and convenient, and compared with a rope body and other structures, the connecting stability is high, damage is not likely to happen, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental instruments, in particular to a limiting device and an experimental container. Background Art

[0002] Nowadays, in laboratories and other scenarios, containers of different specifications are often used, such as glass containers such as volumetric flasks, and the bottle bodies and stoppers of these containers correspond one to one.

[0003] In actual operation, in order to avoid confusion and contamination, the stopper and the bottle body are usually tied together with a thin rope. However, the tying rope is troublesome and laborious, and is easily damaged and broken. In addition, for easy access, some stoppers are not tightly connected to their corresponding bottle bodies. When the container needs to be shaken, the operator needs to press on the top of the stopper with his fingers, which is inconvenient to use. Utility Model Content

[0004] In view of this, the utility model provides a limiting device and an experimental container to solve the problems in the prior art that the stopper and the container body are not tightly connected, which is inconvenient to shake, and the connecting rope between the two is troublesome to install and easy to break.

[0005] In the first aspect, the utility model provides a limiting device, which is suitable for a container body and a plug body thereof, comprising: a limiting ring group, comprising a first limiting ring and a second limiting ring, the first limiting ring correspondingly sleeved and limited on the plug body, and the second limiting ring correspondingly sleeved and limited on the container body; an adjusting component, comprising a first adjusting member and a second adjusting member, the first adjusting member being arranged on the first limiting ring, and the second adjusting member being arranged on the second limiting ring, and the first adjusting member and the second adjusting member being detachably engaged and connected along the plugging direction of the plug body and the opening of the container body.

[0006] Beneficial effects:

[0007] A first limiting ring and a second limiting ring are provided for limiting the position of the plug body and the container body respectively, and a first adjusting member and a second adjusting member are provided on the first limiting ring and the second limiting ring, and the first adjusting member and the second adjusting member can be engaged with each other, so that when the first adjusting member and the second adjusting member are engaged with each other, the container body and the plug that has been inserted into the opening of the container body are correspondingly limited in position, and the plug is prevented from being separated from the opening of the container body, thereby meeting the user's need for shaking the container. At the same time, the engaging connection between the first adjusting member and the second adjusting member is detachable. When the user detaches the engaging relationship between the two, the container body and the plug that are loosely connected can be easily separated, which is convenient for use. In addition, the engaging connection method is easy to disassemble and assemble, and compared with structures such as ropes, the connection stability is high, it is not easy to be damaged, and the service life is long.

[0008] In an optional embodiment, the limiting device further includes: a flexible connection portion, one end of which is connected to the first limiting ring or the first adjusting member, and the other end of which is connected to the second limiting ring or the second adjusting member.

[0009] In an optional embodiment, the first limiting ring includes: a first fixed arc portion, in which a first guide portion and a first annular limiting portion are embedded, and the first guide portion and the first annular limiting portion are extended in the same direction as the first fixed arc portion; a first movable arc portion, which is extended into the first guide portion and is formed into an annular structure together with the first fixed arc portion, and a first annular limiting matching portion is also provided on the first movable arc portion, and the first annular limiting portion and the first annular limiting matching portion have a first adjustment state in which the first annular limiting portion and the first annular limiting matching portion are movably connected to each other, and a first fixed state in which the first annular limiting portion and the first fixed portion are limited to each other under the action of external force.

[0010] In an optional embodiment, the second limiting ring includes: a second fixed arc portion, in which a second guide portion and a second annular limiting portion are embedded, and the second guide portion and the second annular limiting portion are extended in the same direction as the second fixed arc portion; a second movable arc portion, which is extended into the second guide portion and is formed into an annular structure together with the second fixed arc portion, and a second annular limiting matching portion is also provided on the second movable arc portion, and the second annular limiting portion and the second annular limiting matching portion have a second adjustment state in which the second annular limiting portion and the second annular limiting matching portion are movably connected to each other, and a second fixed state in which the second annular limiting portion and the second fixed portion are limited to each other under the action of external force.

[0011] In an optional implementation, the first adjusting member is disposed on the first arc-fixing portion, and / or the second adjusting member is disposed on the second arc-fixing portion.

[0012] In an optional embodiment, a barb block is provided on one of the first adjusting member and the second adjusting member, and a receiving slot is provided on the other of the first adjusting member and the second adjusting member, and the receiving slot is provided with at least one mating slot distributed along the mating direction of the first adjusting member and the second adjusting member, and the barb block is detachably engaged with the mating slot.

[0013] In an optional embodiment, the flexible connecting portion is provided in a sheet shape.

[0014] In an optional embodiment, the limiting ring set, the adjusting assembly and the flexible connecting part are made of plastic material.

[0015] In a second aspect, the utility model further provides an experimental container, comprising: a container body, a top of which is provided with an opening; a plug body, which is detachably sealed and connected to the opening; and the above-mentioned limiting device.

[0016] In an optional embodiment, the container body is provided with a bottleneck portion with an annular concave shape, and the second limiting ring of the limiting device is correspondingly mounted and limited on the bottleneck portion; and / or, the plug body is provided with a plug groove with an annular concave shape, and the first limiting ring of the limiting device is correspondingly mounted and limited in the plug groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of an experimental container according to an embodiment of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of a first limiting ring, a first adjusting member and a part of the flexible connecting portion of the limiting device in the experimental container shown;

[0020] Figure 3 for Figure 2 A transparent structural diagram of the first arc-fixing portion, the first adjusting member and part of the flexible connecting portion of the first limiting ring;

[0021] Figure 4 for Figure 2 A transparent structural diagram of the first moving arc portion and the first stud of the first limiting ring;

[0022] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the second limiting ring, the second adjusting member and part of the flexible connecting portion of the limiting device in the experimental container shown in FIG.

[0023] Figure 6 for Figure 5 A transparent structural diagram of the second arc-fixing portion, the second adjusting member and part of the flexible connecting portion of the second limiting ring;

[0024] Figure 7 for Figure 5 A transparent structural diagram of the second moving arc portion of the second limiting ring and the second stud;

[0025] Description of reference numerals:

[0026] 1. Container body; 11. Bottle neck; 2. Plug body; 21. Plug groove; 3. First limiting ring; 301. First fixed arc portion; 302. First guide portion; 303. First annular limiting portion; 304. First moving arc portion; 305. First stud; 306. First fixing nut; 307. Second fixed arc portion; 308. Second guide portion; 309. Second annular limiting portion; 310. Second moving arc portion; 311. Second stud; 312. Second fixing nut; 4. Second limiting ring; 5. First adjusting member; 51. Barb block; 6. Second adjusting member; 61. Accommodating slot; 62. Matching bayonet; 7. Flexible connection portion. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] like Figures 1 to 7 In the first aspect, the utility model provides a limiting device, which is applicable to a container body 1 and a plug body 2 thereof. The plug body 2 is correspondingly arranged at the opening of the container body 1 to form a seal. The limiting device includes: a limiting ring group and an adjusting component.

[0029] The limiting ring set includes a first limiting ring 3 and a second limiting ring 4 .

[0030] In this embodiment, the first limiting ring 3 and the second limiting ring 4 are both arranged in a long arc shape that is approximately annular, and the two arc ends of the long arc are adjacent to each other and form a side opening. As a convertible embodiment, at least one of the first limiting ring 3 and the second limiting ring 4 can also be arranged in a closed ring shape or a spiral shape.

[0031] Among them, the first limiting ring 3 corresponds to the sleeve and is limited on the plug body 2, and the second limiting ring 4 corresponds to the sleeve and is limited on the container body 1, specifically adjacent to the opening of the container body 1. The limiting method can be snap-fit, interference connection, screw fastening, etc., specifically snap-fit ​​limiting.

[0032] The adjustment assembly includes a first adjustment member 5 and a second adjustment member 6 .

[0033] In this embodiment, the first adjusting member 5 is arranged on the first limiting ring 3, and the second adjusting member 6 is arranged on the second limiting ring 4. Along the plugging direction of the plug body 2 and the opening of the container body 1, the first adjusting member 5 and the second adjusting member 6 are detachably engaged and connected.

[0034] A first limiting ring 3 and a second limiting ring 4 are provided to limit the plug body 2 and the container body 1 respectively. At the same time, a first adjusting member 5 and a second adjusting member 6 are provided on the first limiting ring 3 and the second limiting ring 4, and the first adjusting member 5 and the second adjusting member 6 can be engaged with each other, so that when the first adjusting member 5 and the second adjusting member 6 are engaged with each other, the container body 1 and the plug that has been inserted into the opening of the container body 1 are correspondingly limited in position, preventing the plug from detaching from the opening of the container body 1, thereby meeting the user's need for shaking the container. At the same time, the first adjusting member 5 and the second adjusting member 6 are engaged in a detachable manner. When the user detaches the engaging relationship between the two, the container body 1 and the plug that are loosely connected can be easily detached, which is convenient for use. In addition, the engaging connection method is easy to disassemble and assemble, and compared with structures such as ropes, the connection stability is high, it is not easy to be damaged, and the service life is long.

[0035] In this embodiment, the limiting device further includes a flexible connecting portion 7 .

[0036] The flexible connection part 7 is a flexible part, which can be in the shape of a rope, a sheet, a cable, etc. In this embodiment, the two ends of the flexible connection part 7 are respectively connected to the first adjustment part 5 and the second adjustment part 6. The flexible connection part 7 binds the plug body 2 and the container body to avoid confusion and contamination problems, shortens the installation distance between the first adjustment part 5 and the second adjustment part 6 in the adjustment assembly during assembly, and facilitates installation.

[0037] As a convertible embodiment, the end of the flexible connection part 7 connected to the first adjusting member 5 may also be connected to the first limiting ring 3, and the end of the flexible connection part 7 connected to the second adjusting member 6 may also be connected to the second limiting ring 4. As another convertible embodiment, the flexible connection part 7 may not be provided.

[0038] Specifically, the first limiting ring 3 includes: a first fixed arc portion 301 and a first moving arc portion 304 .

[0039] The first fixed arc portion 301 is in the shape of an arc block, and has a first guide portion 302 built therein. In this embodiment, the first guide portion 302 is a groove body, which is arranged on the inner side of the first fixed arc portion 301 with a relatively small inner diameter, and is opened inwardly and at one end of the first fixed arc portion 301, respectively. The first movable arc portion 304 is extended into the first guide portion 302, and the first guide portion 302 accommodates at least part of the first movable arc portion 304. The first movable arc portion 304 and the first fixed arc portion 301 are jointly formed into a ring structure. The first movable arc portion 304 is suitable for moving relative to the first fixed arc portion 301 along the first guide portion 302 under the action of an external force, so that the distance between the opposite ends of the first fixed arc portion 301 and the first movable arc portion 304 can be adjusted, and then the size of the upper side opening of the first limit ring 3 is correspondingly adjusted. The object of the external force can be the first movable arc portion 304 or the first fixed arc portion 301.

[0040] As a convertible implementation, the first guide portion 302 may also be a through hole provided in the first fixed arc portion 301 .

[0041] In addition, a first annular limiting portion 303 is provided on the first fixed arc portion 301, and a first annular limiting matching portion is provided on the first moving arc portion 304. The first annular limiting portion 303 and the first annular limiting matching portion cooperate with each other and have a first adjustment state and a first fixed state.

[0042] In the first adjustment state, the first annular limiting portion 303 and the first annular limiting matching portion are movably connected to each other, so that the first fixed arc portion 301 and the first moving arc portion 304 can move relative to each other under the action of external force. In the first fixed state, the first annular limiting portion 303 and the first annular limiting matching portion are acted upon by external force and limit each other to lock the relative positions of the first fixed arc portion 301 and the first moving arc portion 304.

[0043] In this embodiment, the first annular limiting portion 303 is an elongated hole or an elongated groove, which is arranged on the first fixed arc portion 301 and communicated with the first guide portion 302. Preferably, the first annular limiting portion 303 is arranged on the outer side of the first fixed arc portion 301 with a relatively large inner diameter. The first annular limiting matching portion includes a first stud 305 and a first fixing nut 306. The first stud 305 is arranged on the outer side wall of the first movable arc portion 304 with a relatively large inner diameter, passes through the first annular limiting portion 303 and then matches with the fixing nut. When the external force does not tighten the first stud 305 and the first fixing nut 306, it is in the first adjustment state, and after tightening, it is in the first fixed state. As a convertible embodiment, the first annular limiting portion 303 and the first annular limiting matching portion can also be a clamping hole and a clamping hook, etc., respectively.

[0044] In addition, the length directions of the first guide portion 302, the first annular limiting portion 303 and the first arc fixing portion 301 are all arranged in the same annular direction, so as to ensure smooth cooperation among the three and avoid structural deformation of the first limiting ring 3.

[0045] Specifically, the second limiting ring 4 includes a second fixed arc portion 307 and a second movable arc portion 310. Preferably, in this embodiment, the second limiting ring 4 is configured in the same manner as the first limiting ring 3. As a convertible implementation, the second limiting ring 4 can adjust its own structure according to the container body 1 on the basis of satisfying the sleeve limit.

[0046] The second fixed arc portion 307 is in the shape of an arc block, and has a second guide portion 308 built therein. In this embodiment, the second guide portion 308 is a groove body, which is arranged on the inner side of the second fixed arc portion 307 where the inner diameter is relatively small, and is opened inwardly and at one end of the second fixed arc portion 307 respectively. The second movable arc portion 310 is extended into the second guide portion 308, and the second guide portion 308 accommodates at least part of the second movable arc portion 310. The second movable arc portion 310 and the second fixed arc portion 307 are jointly formed into a ring structure. The second movable arc portion 310 is suitable for moving relative to the second fixed arc portion 307 along the second guide portion 308 under the action of an external force, so that the distance between the opposite ends of the second fixed arc portion 307 and the second movable arc portion 310 can be adjusted, and the size of the upper side opening of the second limiting ring 4 can be adjusted accordingly. The object of the external force can be the second movable arc portion 310 or the second fixed arc portion 307.

[0047] As a convertible implementation, the second guide portion 308 may also be a through hole provided in the second fixed arc portion 307 .

[0048] In addition, a second annular limit portion 309 is provided on the second fixed arc portion 307, and a second annular limit matching portion is provided on the second moving arc portion 310. The second annular limit portion 309 and the second annular limit matching portion cooperate with each other and have a second adjustment state and a second fixed state.

[0049] In the second adjustment state, the second annular limiting portion 309 and the second annular limiting matching portion are movably connected to each other, so that the second fixed arc portion 307 and the second moving arc portion 310 can move relative to each other under the action of external force. In the second fixed state, the second annular limiting portion 309 and the second annular limiting matching portion are acted upon by external force and limit each other to lock the relative positions of the second fixed arc portion 307 and the second moving arc portion 310.

[0050] In this embodiment, the second annular limiting portion 309 is an elongated hole or an elongated groove, which is arranged on the second fixed arc portion 307 and communicated with the second guide portion 308. Preferably, the second annular limiting portion 309 is arranged on the outer side of the second fixed arc portion 307 with a relatively large inner diameter. The second annular limiting matching portion includes a second stud 311 and a second fixing nut 312. The second stud 311 is arranged on the outer side wall of the second movable arc portion 310 with a relatively large inner diameter, passes through the second annular limiting portion 309, and then matches with the second fixing nut 312. When the second stud 311 and the second fixing nut 312 are not tightened by external force, they are in the second adjustment state, and after tightening, they are in the second fixed state. As a convertible embodiment, the second annular limiting portion 309 and the second annular limiting matching portion can also be a clamping hole and a clamping hook, etc.

[0051] In addition, the length directions of the second guide portion 308, the second annular limiting portion 309 and the second arc fixing portion 307 are all arranged in the same annular direction, so as to ensure smooth cooperation among the three and avoid structural deformation of the second limiting ring 4.

[0052] By making the side openings of the first limiting ring 3 and the second limiting ring 4 adjustable in size, it is convenient for them to be installed and limited at preset installation positions with smaller outer diameters on the plug body 2 and the container body 1, while improving the applicable range of the first limiting ring 3 and the second limiting ring 4.

[0053] In this embodiment, in the adjustment state, the first arc moving part 304 and the second arc moving part 310 move relative to the first fixed arc part 301 and the second fixed arc part 307 respectively after being driven by external force, and the first fixed arc part 301 and the second fixed arc part 307 are fixed relative to the plug body 2 and the container body 1 by external force. In order to ensure that the first adjustment member 5 and the second adjustment member 6 are aligned with each other to achieve engagement, the first adjustment member 5 is arranged on the first fixed arc part 301, and the second adjustment member 6 is arranged on the second fixed arc part 307. As a convertible embodiment, the first adjustment member 5 can be arranged on the first arc moving part 304, and the second adjustment member 6 can be arranged on the second arc moving part 310.

[0054] Furthermore, in this embodiment, the first adjusting member 5 is provided with a barb block 51 , and the second adjusting member 6 is provided with an accommodating slot 61 .

[0055] Specifically, the barb block 51 includes two barb parts protruding toward the receiving slot 61, and a space for the barb parts to deform and displace is provided between the two barb parts, specifically an arc-shaped groove. The receiving slot 61 is box-shaped, with an opening toward the barb block 51. Along the matching direction of the first adjusting member 5 and the second adjusting member 6, the side wall of the receiving slot 61 is provided with matching bayonet 62, and the shape and position of the matching opening correspond to the barb part. In this embodiment, a plurality of matching bayonet 62 are provided along the matching direction of the two adjusting members, preferably, symmetrically distributed on the side wall of the receiving slot 61, corresponding to the barb part, the barb part of the barb block 51 is engaged and connected with the matching bayonet 62, and the operator can also press the barb part that passes through the matching bayonet 62 to make it detachable from the matching bayonet 62, so as to realize the detachability of the barb block 51.

[0056] As a convertible implementation, the second adjusting member 6 may be provided with a receiving slot 61, and the second adjusting member 6 may be provided with a barb block 51. As a convertible implementation, the number of the matching bayonet 62 may be only one or two.

[0057] In this embodiment, preferably, the flexible connection part 7 is provided in a sheet shape. The flexible connection part 7 provided in this way can ensure the binding of the plug body 2 and the container body while avoiding the problem that the flexible connection part 7 itself becomes entangled and difficult to untie when it is in a rope shape.

[0058] Furthermore, the limiting ring group, the adjusting assembly and the flexible connecting part 7 are made of corrosion-resistant materials, preferably plastic or glass fiber. Since the container body 1 needs to be immersed in a certain concentration of nitric acid when detecting trace elements and heavy metals, such a setting can avoid structural corrosion or the occurrence of situations that affect the detection results, and the cost is low.

[0059] In a second aspect, the utility model further provides an experimental container, comprising: a container body 1, a plug body 2 and the above-mentioned limiting device.

[0060] The specific form of the container body 1 is not limited, as long as the plug body 2 is installed and sealed. It can be a measuring device such as a volumetric flask, or a container such as a narrow-mouthed bottle or a wide-mouthed bottle. The shape of the plug body 2 is set according to the shape of the opening of the container body 1, and it can meet the sealing requirements. It can be approximately square, round or cylindrical, etc. The top of the container body 1 is provided with an opening, and the plug body 2 is detachably sealed and connected to the opening. The volume of the container body 1 is not limited. In this embodiment, the volume specification is 25ml, and it can also be in the form of 10mL, 25mL, 50mL, 100mL, etc.

[0061] Preferably, the container body 1 is provided with a bottleneck portion 11 with an annular concave shape, the bottleneck portion 11 is adjacent to the opening of the container body 1, and the second limiting ring 4 of the limiting device is correspondingly sleeved and limited on the bottleneck portion 11; the plug body 2 is provided with a plug groove 21 with an annular concave shape, and the first limiting ring 3 of the limiting device is correspondingly sleeved and limited in the plug groove 21.

[0062] As a convertible embodiment, only one of the bottleneck portion 11 and the plug groove 21 may be provided, or neither of them may be provided, and the second limiting ring 4 and the first limiting ring 3 may achieve limiting by providing an internal thread on the inner wall and cooperating with the external thread on the container body 1 and the plug body 2.

[0063] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A limiting device, suitable for a container body (1) and a plug body (2), characterized in that: include: A limiting ring set, comprising a first limiting ring (3) and a second limiting ring (4), wherein the first limiting ring (3) is correspondingly sleeved and limitedly located on the plug body (2), and the second limiting ring (4) is correspondingly sleeved and limitedly located on the container body (1); The adjustment component comprises a first adjustment member (5) and a second adjustment member (6), wherein the first adjustment member (5) is arranged on the first limiting ring (3), and the second adjustment member (6) is arranged on the second limiting ring (4), and along the plugging direction of the plug body (2) and the opening of the container body (1), the first adjustment member (5) and the second adjustment member (6) are detachably engaged and connected.

2. The limiting device according to claim 1, characterized in that: Also includes: A flexible connection portion (7) has one end connected to the first limiting ring (3) or the first adjusting member (5), and the other end connected to the second limiting ring (4) or the second adjusting member (6).

3. The limiting device according to claim 1 or 2, characterized in that: The first limiting ring (3) comprises: The first arc-fixing portion (301) has a first guide portion (302) and a first annular limiting portion (303) built therein, wherein the first guide portion (302) and the first annular limiting portion (303) are arranged to extend in the same direction as the first arc-fixing portion (301); The first movable arc portion (304) is extended into the first guide portion (302) and is formed into an annular structure together with the first fixed arc portion (301). The first movable arc portion (304) is also provided with a first annular limiting matching portion. The first annular limiting portion (303) and the first annular limiting matching portion have a first adjustment state in which they are movably connected to each other, and a first fixed state in which they are mutually limited under the action of an external force.

4. The limiting device according to claim 3, characterized in that: The second limiting ring (4) comprises: The second arc-fixing portion (307) has a second guide portion (308) and a second annular limiting portion (309) built therein, and the second guide portion (308) and the second annular limiting portion (309) are arranged to extend in the same direction as the second arc-fixing portion (307); The second movable arc portion (310) extends into the second guide portion (308) and is formed into an annular structure together with the second fixed arc portion (307). A second annular limiting matching portion is also provided on the second movable arc portion (310). The second annular limiting portion (309) and the second annular limiting matching portion have a second adjustment state in which they are movably connected to each other, and a second fixed state in which they are mutually limited under the action of an external force.

5. The limiting device according to claim 4, characterized in that: The first adjusting member (5) is arranged on the first arc-fixing portion (301), and / or the second adjusting member (6) is arranged on the second arc-fixing portion (307).

6. The limiting device according to any one of claims 1-2, 4-5, characterized in that: A barb block (51) is provided on one of the first adjusting member (5) and the second adjusting member (6), and a receiving slot (61) is provided on the other of the first adjusting member (5) and the second adjusting member (6). The receiving slot (61) is provided with at least one matching slot (62) distributed along the matching direction of the first adjusting member (5) and the second adjusting member (6), and the barb block (51) is detachably connected to the matching slot (62).

7. The limiting device according to any one of claims 2, 4-5, characterized in that: The flexible connecting part (7) is arranged in a sheet shape.

8. The limiting device according to any one of claims 2, 4-5, characterized in that: The limiting ring group, the adjusting component and the flexible connecting part (7) are made of plastic material.

9. An experimental container, characterized in that: include: A container body (1) having an opening at the top; A plug body (2) is detachably sealed and connected to the opening; The limiting device according to any one of claims 1 to 8.

10. The experimental container according to claim 9, characterized in that: The container body (1) is provided with a bottle neck portion (11) in the form of an annular concave portion, and the second limiting ring (4) of the limiting device is correspondingly sleeved and limited on the bottle neck portion (11); and / or, The plug body (2) is provided with a plug groove (21) in the form of an annular inward concave portion, and the first limiting ring (3) of the limiting device is correspondingly sleeved and limitedly located in the plug groove (21).

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