A volumetric flask fixing device

Abstract

The utility model relates to a kind of volumetric flask fixing devices, the volumetric flask fixing device includes bottom plate and annular cylinder, one end of the annular cylinder is fixedly connected with the bottom plate, to make the annular cylinder and the bottom plate between enclosure into accommodating groove;The volumetric flask fixing device further includes limiting component, the limiting component includes elastic member mounted on the annular cylinder;When the volumetric flask is inserted to the accommodating groove, the elastic member at least partially with the volumetric flask, and the elastic force of the elastic member applied to the volumetric flask is balanced, to make the central axis of the volumetric flask and the central axis of the accommodating groove coincide, can guarantee the relative position of volumetric flask and this volumetric flask fixing device is fixed, improve the positioning accuracy of volumetric flask fixing device and turntable device, and then it is favorable for the accurate positioning of volumetric flask relative to constant volume appearance, it is convenient to add material liquid in volumetric flask.

Description

Technical Field

[0001] This utility model relates to the technical field of automated volumetric flask fixing, and in particular to a volumetric flask fixing device. Background Technology

[0002] A volumetric calibrator is an instrument used to accurately measure or adjust the volume of liquids and is widely used in fields such as chemistry, biotechnology, pharmaceuticals, and environmental monitoring.

[0003] Existing volumetric flasks typically include a turntable and a liquid dispensing device. The turntable usually has several slots for placing volumetric flasks, so that the turntable can align different volumetric flasks with the liquid dispensing device, which is used to add liquid into the volumetric flasks.

[0004] However, since the turntable device drives the volumetric flasks to rotate so that different volumetric flasks are aligned with the liquid filling device, when the volumetric flasks are only limited by the wall of the volumetric flask placement slot, the force generated during their movement (such as inertial force) can easily cause the central axis of the volumetric flasks to deviate from their initial positioning position. Moreover, volumetric flasks are mostly narrow-necked structures, and when their central axis deviates from the initial positioning position, their openings will also deviate from the liquid filling device, thus affecting the addition of liquid into the volumetric flasks. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing a volumetric flask fixing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A volumetric flask fixing device is used to fix a volumetric flask on the turntable of a volumetric apparatus.

[0008] The volumetric flask fixing device includes a base plate and an annular cylinder, one end of which is fixedly connected to the base plate so that the annular cylinder and the base plate form a receiving groove;

[0009] The volumetric flask fixing device further includes a limiting component, which includes an elastic element mounted on the annular cylinder;

[0010] When the volumetric flask is inserted into the receiving slot, the elastic member at least partially abuts against the volumetric flask, and the elastic force applied by the elastic member to the volumetric flask is balanced so that the central axis of the volumetric flask coincides with the central axis of the receiving slot.

[0011] Preferably, the limiting component further includes a plurality of through slots penetrating the annular cylinder;

[0012] The through slots are arranged in a circular array about the central axis of the annular cylinder.

[0013] Preferably, the elastic element is configured as an integral elastic band, and the elastic band has a closed structure;

[0014] The elastic band is wrapped around the outer wall of the annular cylinder and partially inserted into the through groove and abuts against the outer wall surface of the volumetric flask;

[0015] The elastic bands are located in regions of different through slots where the elastic force is balanced.

[0016] Preferably, the elastic element is configured as a plurality of elastic rope segments;

[0017] The elastic rope segments are arranged one-to-one with the through grooves and fixed in the through grooves; the elastic force among the multiple elastic elements is balanced.

[0018] Preferably, three through slots are provided;

[0019] The central angle A corresponding to the through slot is such that the value of A satisfies: 60°≤A≤90°.

[0020] Preferably, at least one set of the limiting components is provided along the axial direction of the receiving groove;

[0021] The limiting component is closer to the opening end of the receiving groove relative to the base plate.

[0022] Preferably, a positioning element is fixedly provided on the end face of the base plate away from the receiving groove;

[0023] The positioning element is configured as a positioning post or a threaded connection post that is positioned and connected to the turntable device.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] This invention provides a volumetric flask fixing device. It utilizes an elastic element that partially abuts against the volumetric flask, ensuring a balanced elastic force applied to the flask. This helps maintain the alignment of the volumetric flask's central axis with the central axis of the receiving tank. Even if the volumetric flask experiences slight wobbling or center shift due to inertial forces during the rotation of the turntable, it will return to its original position under the action of the elastic element once the turntable stops. This ensures the relative fixation of the volumetric flask and the fixing device, facilitating precise positioning of the device and the turntable, and accurate positioning of the volumetric flask relative to the volumetric meter, making it convenient to add liquid. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A schematic diagram of one example of the volumetric flask fixing device provided by this utility model.

[0028] Figure 2 for Figure 1 A schematic diagram of the fixing device for a medium-capacity flask and the explosion of the flask.

[0029] Figure 3 for Figure 1 A sectional view (top view) of the location of the limiting component.

[0030] Figure 4 for Figure 3 An enlarged view of position D1 in the middle.

[0031] Figure 5 for Figure 1 A cross-sectional view (front view).

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Base plate; 11. Positioning component; 2. Annular cylinder; 3. Receiving groove; 4. Limiting component; 41. Elastic component; 42. Through groove; 100. Volumetric flask. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] See Figures 1 to 5 This utility model provides a volumetric flask fixing device for fixing a volumetric flask 100 on the turntable device of a volumetric flask.

[0038] Specifically, the volumetric flask fixing device includes a base plate 1 and an annular cylinder 2. One end of the annular cylinder 2 is fixedly connected to the base plate 1 so that the annular cylinder 2 and the base plate 1 form a receiving groove 3. It is easy to understand that one end of the receiving groove 3 has an open structure (i.e., it has an open end) for inserting the volumetric flask 100 into the receiving groove 3.

[0039] To increase the stability of the volumetric flask 100 placed in the receiving groove 3, and to ensure that the central axis of the volumetric flask 100 coincides with the central axis of the receiving groove 3, the volumetric flask fixing device also includes a limiting component 4, which includes an elastic element 41 installed on the annular cylinder 2. When the volumetric flask 100 is inserted into the receiving groove 3, the elastic element 41 at least partially abuts against the volumetric flask 100, and the elastic force applied by the elastic element 41 to the volumetric flask 100 is balanced, so that the central axis of the volumetric flask 100 coincides with the central axis of the receiving groove 3.

[0040] It is easy to understand that in the above scheme, the elastic element 41 partially abuts against the volumetric flask 100, and the elastic force applied by the elastic element 41 to the volumetric flask 100 is balanced. This helps to ensure that the central axis of the volumetric flask 100 coincides with the central axis of the receiving tank 3. Moreover, even if the volumetric flask 100 experiences slight shaking or center shift due to inertial force during the rotation of the turntable device, the volumetric flask 100 can be reset under the action of the elastic element 41 after the turntable device stops rotating. That is, it resets to the point where the central axis of the volumetric flask 100 coincides with the central axis of the receiving tank 3. This ensures the relative fixation of the position between the volumetric flask 100 and the volumetric flask fixing device, which is beneficial for the accurate positioning of the volumetric flask fixing device and the turntable device, and for the accurate positioning of the volumetric flask 100 relative to the volumetric meter, making it convenient to add liquid into it.

[0041] It is worth noting that the aforementioned "elastic force balance" means that when the volumetric flask 100 is subjected to an external force (such as inertial force), it can be adjusted by the elastic element 41 to return to its initial state. This can also be understood as the forces exerted by the elastic element 41 on the volumetric flask 100 at the horizontal cross-section where it abuts the elastic element 41 remain balanced, and the direction of the elastic force is perpendicular to the central axis of the volumetric flask 100 and intersects with the central axis of the volumetric flask 100 at a point (taking a circle as an example, meaning the direction of the force passes through the center of the circle; see [reference]). Figure 3 ).

[0042] The limiting component 4 and its elastic element 41 can be configured in various ways to ensure that the elastic force is balanced in different areas of the elastic element 41 or among several elastic elements 41.

[0043] See Figures 1 to 5 In this embodiment, the limiting component 4 also includes a plurality of through slots 42 penetrating the annular cylinder 2; the plurality of through slots 42 are arranged in a circular array about the central axis of the annular cylinder 2.

[0044] Furthermore, the elastic element 41 is configured as an integral elastic band, and the elastic band has a closed structure; the elastic band is wrapped around the outer wall of the annular cylinder 2, and partially inserted into the through groove 42 and abutting against the outer wall surface of the volumetric bottle 100; the elastic force of the elastic band is balanced between the regions of different through grooves 42.

[0045] It is easy to understand that the elastic element 41 is set as an integral elastic band wrapped around the annular cylinder 2, which can ensure that the elastic force of the elastic element 41 located around the volumetric bottle 100 is balanced. This is conducive to ensuring that the elastic element 41 in different channels 42 is stretched to a consistent degree, thereby making the force around the volumetric bottle 100 uniform and facilitating the alignment of the central axis of the volumetric bottle 100 with the central axis of the receiving channel 3.

[0046] In addition, the integrated elastic band is wound around the annular cylinder 2, and partially abuts against the outer wall of the annular cylinder 2 and partially abuts against the outer wall of the volumetric bottle 100. This can prevent the elastic band from moving circumferentially and also prevent the part of the elastic band located in the through groove 42 from undergoing excessive circumferential deformation. This can prevent the elastic band from causing the volumetric bottle 100 to rotate circumferentially, which is conducive to ensuring the stable placement of the volumetric bottle 100.

[0047] In another embodiment, the elastic element 41 may also be configured as a plurality of elastic rope segments; the elastic rope segments are configured one-to-one with the through groove 42 and fixed in the through groove 42; the elastic force among the plurality of elastic elements 41 is balanced, not shown in the figure.

[0048] See Figures 1 to 5In this embodiment, three through slots 42 are provided; the central angle A corresponding to the through slot 42 can be set to 60°, 65°, 75°, 80° or 90°. It is easy to understand that the value of A should satisfy: 60°≤A≤90°.

[0049] Of course, in other embodiments, the through slots 42 can also be set to two, four, five or more, as long as the elastic force on the volumetric bottle 100 is balanced. It should also be understood that as the number of through slots 42 increases, the central angle corresponding to each through slot 42 also decreases relatively.

[0050] Furthermore, the sidewall of the through groove 42 and the outer wall of the annular cylinder 2 are connected by a circular arc transition.

[0051] See Figures 1 to 5 Along the axial direction of the receiving groove 3, a set of limiting components 4 is provided; and the set of limiting components 4 is closer to the opening end of the receiving groove 3 than the bottom plate 1, so as to further cooperate with the annular cylinder 2 and the bottom plate 1 to limit the volumetric bottle 100.

[0052] See Figure 5 A positioning element 11 is fixed on the end face of the base plate 1 away from the receiving groove 3; the positioning element 11 is configured as a positioning post or a threaded connection post that is positioned and connected to the turntable device.

[0053] It is easy to understand that, since the positioning component 11 is relatively small, it is easier to make its central axis coincide with the central axis of the receiving groove 3 during the processing, which makes it easier to achieve the positioning and installation of the volumetric bottle 100 and its connected structure, and increases the positioning accuracy of the volumetric bottle 100 and its connected structure.

[0054] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A volumetric flask fixing device for fixing a volumetric flask (100) on the turntable device of a volumetric apparatus, characterized in that, The volumetric flask fixing device includes a base plate (1) and an annular cylinder (2). One end of the annular cylinder (2) is fixedly connected to the base plate (1) so that the annular cylinder (2) and the base plate (1) form a receiving groove (3). The volumetric flask fixing device further includes a limiting component (4), which includes an elastic element (41) mounted on the annular cylinder (2). When the volumetric flask (100) is inserted into the receiving groove (3), the elastic member (41) at least partially abuts against the volumetric flask (100), and the elastic force applied by the elastic member (41) to the volumetric flask (100) is balanced so that the central axis of the volumetric flask (100) coincides with the central axis of the receiving groove (3).

2. The volumetric flask fixing device according to claim 1, characterized in that, The limiting component (4) also includes several through slots (42) that penetrate the annular cylinder (2). Several of the through slots (42) are arranged in a circular array about the central axis of the annular cylinder (2).

3. The volumetric flask fixing device according to claim 2, characterized in that, The elastic element (41) is configured as an integral elastic band, and the elastic band has a closed structure; The elastic band is wrapped around the outer wall of the annular cylinder (2), and partially inserted into the through groove (42) and abuts against the outer wall surface of the volumetric bottle (100); The elastic band is located in regions of different through slots (42) with balanced elastic force.

4. The volumetric flask fixing device according to claim 2, characterized in that, The elastic element (41) is configured as a plurality of elastic rope segments; The elastic rope segments are arranged one-to-one with the through grooves (42) and fixed in the through grooves (42); the elastic forces among the multiple elastic elements (41) are balanced.

5. A volumetric flask fixing device according to claim 2, characterized in that, The through slot (42) is provided in three parts; The central angle A corresponding to the through groove (42) is such that the value of A satisfies: 60°≤A≤90°.

6. The volumetric flask fixing device according to any one of claims 1-5, characterized in that, At least one set of limiting components (4) is provided along the axial direction of the receiving groove (3); The limiting component (4) is closer to the opening end of the receiving groove (3) relative to the base plate (1).

7. The volumetric flask fixing device according to any one of claims 1-5, characterized in that, A positioning element (11) is fixed on the end face of the bottom plate (1) away from the receiving groove (3). The positioning element (11) is configured as a positioning post or a threaded connection post that is positioned and connected to the turntable device.

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