Anti-falling fixing structure for volumetric flask

Abstract

The utility model relates to a volumetric flask anti-toppling fixing structure, which comprises a counterweight steel ring surrounding the periphery of a volumetric flask and a plurality of fixing components uniformly dispersed on the periphery of the volumetric flask, each fixing component comprises a connecting rod and an abutting rod, the connecting rod is arranged above the counterweight steel ring and is detachably connected with the counterweight steel ring through a connector, and the abutting rod is connected with the connecting rod. The abutting rod is arranged above the connecting rod and hinged to the connecting rod through a pin shaft, and the abutting rod is connected with the connecting rod through a first spring and rotates downwards around the pin shaft under the tension action of the first spring; according to the anti-falling fixing structure, the counterweight steel ring surrounds the periphery of the bottom of the volumetric flask, the abutting rods of the fixing assemblies abut against the side wall of the volumetric flask under the pulling force effect of the first springs, the upper portion of the volumetric flask is fixed, the whole operation process is easy and convenient to operate, carrying is easy, application is flexible, the volumetric flask can be stably fixed, and the anti-falling fixing structure is convenient to use. And the bottle body and the neck part of the volumetric flask are exposed outside, so that adverse effects on an ultrasonic experiment are avoided.

Description

A structure for preventing volumetric flasks from tipping over. Technical Field

[0001] This utility model relates to the field of experimental auxiliary equipment technology, and in particular to a structure for preventing volumetric flasks from tipping over. Background Technology

[0002] In routine experiments, volumetric flasks of different sizes are used for ultrasonic dissolution or extraction of samples. During the ultrasonic process, volumetric flasks are prone to tipping over due to their small size and light weight or high water level in the ultrasonic instrument, which can lead to sample contamination or even experimental failure.

[0003] Chinese utility model patent CN220573523U discloses a volumetric flask stabilizer, which consists of a stabilizing part and a rotating part. Inside the stabilizer, there is a fixed cavity for accommodating and fixing the volumetric flask body and a guiding cavity for fixing the neck of the volumetric flask. The fixed cavity and the guiding cavity combine to stably fix the body and neck of the volumetric flask within the accommodating cavity, preventing the volumetric flask from shifting or shaking when placed inside, thus avoiding accidental contact with the volumetric flask during pipetting. However, in use, this volumetric flask stabilizer encloses the entire body and part of the neck of the volumetric flask within the stabilizer, which can easily affect ultrasonic propagation, leading to sample ultrasonic dissolution or extraction failure.

[0004] Therefore, this utility model proposes a tilt-proof fixing structure for volumetric flasks to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a volumetric flask anti-tipping and fixing structure that is easy to operate, easy to carry, and flexible in application. It can stably fix the volumetric flask without causing adverse effects on ultrasonic experiments.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a volumetric flask anti-tipping fixing structure, the innovation of which is: including

[0007] A counterweight steel ring used to surround the volumetric flask;

[0008] Several fixing components are evenly distributed around the volumetric flask. Each fixing component includes a connecting rod and a stop rod. The connecting rod is positioned above the counterweight steel ring and is detachably connected to the counterweight steel ring via a connector. The stop rod is positioned above the connecting rod and is hinged to the connecting rod via a pin. The stop rod is connected to the connecting rod via a first spring and rotates downward around the pin under the tension of the first spring.

[0009] Furthermore, the two ends of the first spring are detachably connected to the connecting rod and the abutment rod, respectively;

[0010] The connecting rod is provided with a fixing rod for installing the first spring and a first nut. One end of the fixing rod is fixedly connected to the connecting rod, and the other end has a first external thread section. The first spring is movably fitted on the side of the first external thread section of the fixing rod near the connecting rod. The first nut is threadedly connected to the first external thread section, limiting the first spring on the fixing rod.

[0011] The abutment rod is provided with a movable rod for installing the first spring and a second nut. One end of the movable rod has an enlarged end and the other end has a second external thread section. The abutment rod has a through hole for the enlarged end to pass through. On the side of the through hole near the connecting rod, there is an oblong hole for the movable rod to move into. After the enlarged end of the movable rod passes through the through hole, the movable rod moves into the oblong hole. The enlarged end and the second external thread section are located on both sides of the abutment rod. The first spring is movably fitted on the movable rod and is located between the second external thread section and the abutment rod. The second nut is threaded onto the second external thread section, limiting the first spring on the movable rod.

[0012] Furthermore, the outer surface of the counterweight steel ring is composed of a curved surface and a horizontal bottom surface.

[0013] Furthermore, the connector includes an integrally formed sleeve portion and a snap-fit ​​portion. The side of the sleeve portion away from the snap-fit ​​portion is movably fitted onto the outside of the connecting rod. The snap-fit ​​portion has an arc-shaped structure that matches the counterweight steel ring. The side of the snap-fit ​​portion away from the sleeve portion has a slot for snapping the counterweight steel ring, and the counterweight steel ring is movably snapped into the slot.

[0014] Furthermore, the counterweight steel ring is provided with a positioning pin, and a mounting groove is opened in the radial direction on the superior arc surface of the counterweight steel ring for the positioning pin to enter or partially move out. The positioning pin is installed in the mounting groove by a second spring.

[0015] The connector has several locating slots evenly spaced along the circumferential direction for the locating pins to partially enter. When the connector is engaged with the counterweight steel ring, the locating pins partially extend out of the mounting groove and enter the corresponding locating slots under the elastic force of the second spring.

[0016] Furthermore, the positioning groove is a through groove extending along the axial direction of the connector.

[0017] Furthermore, the anti-tipping fixing structure of the volumetric flask also includes several telescopic rods evenly distributed around the volumetric flask for auxiliary positioning. Several hinged slots for installing the telescopic rods are opened on the horizontal bottom surface of the counterweight steel ring. The telescopic rod includes a fixed section and a telescopic section. The telescopic section is installed in the fixed section by a third spring and moves away from the fixed section under the elastic force of the third spring. An auxiliary limiting block is installed on the side of the telescopic section away from the fixed section. The side of the fixed section of the telescopic rod away from the telescopic section is installed in the corresponding hinged slot by a hinge shaft. The telescopic rod rotates around the hinge shaft between a first position inside the counterweight steel ring and a second position outside the counterweight steel ring. When the telescopic rod rotates to the first position inside the counterweight steel ring, the bottom surface of the auxiliary limiting block is on the same plane as the horizontal bottom surface of the counterweight steel ring, and the top surface of the auxiliary limiting block is an inclined surface that matches the bottom wall of the volumetric flask.

[0018] The advantages of this utility model are:

[0019] (1) The anti-tipping fixing structure of this utility model uses a counterweight steel ring to surround the bottom of the volumetric flask, and is fixed to the counterweight steel ring and surrounds the volumetric flask. The abutting rod of each fixing component presses against the side wall of the volumetric flask under the tension of the first spring, thereby fixing the upper part of the volumetric flask. The entire operation process only requires the anti-tipping fixing structure to be put on the outside of the volumetric flask from top to bottom. It is easy to operate, easy to carry, and flexible in application. It can not only stably fix the volumetric flask, but also expose the body and neck of the volumetric flask, which will not have an adverse effect on the ultrasonic experiment.

[0020] (2) The first spring of this utility model is detachably connected to the connecting rod and the abutting rod at both ends. On the one hand, it is convenient to replace the first spring. On the other hand, the connection between the first spring and the abutting rod can be canceled by moving the movable rod out of the waist-shaped hole and the through hole, so that the abutting rod can move freely, thereby making it convenient to take out the volumetric bottle.

[0021] (3) The bottom surface of the counterweight steel ring of this utility model is a horizontal plane, which is conducive to improving the stability of the anti-tipping fixing structure.

[0022] (4) The connector of this utility model consists of an integrally formed sleeve part and a snap-fit ​​part. One side is detachably connected to the counterweight steel ring by snap-fit, and the other side is detachably connected to the connecting rod by a set. It is easy to install and disassemble.

[0023] (5) This utility model sets a positioning pin on the counterweight steel ring and opens a positioning groove in the slot of the connector. By rotating the connecting rod, the tilt angle of the connecting rod is adjusted, thereby adjusting the height of the abutment rod to adapt to different sizes of volumetric bottles. The connector rotates around the counterweight steel ring as the connecting rod rotates. When the connecting rod is adjusted to the position, the positioning pin enters the positioning groove at the corresponding position, realizing the relative limitation between the connector and the counterweight steel ring, thereby fixing the connecting rod.

[0024] (6) The positioning groove of this utility model is a through groove extending along the axial direction of the connector. When the positioning pin extends into the positioning groove to position the angle of the connecting rod, the positioning pin moves in phase within the positioning groove, thereby achieving the purpose of adjusting the position of the connecting rod on the counterweight steel ring by moving the connector.

[0025] (7) This utility model sets a telescopic rod at the bottom of the counterweight steel ring and sets an auxiliary limiting block on the telescopic rod. When the telescopic rod rotates to the first position inside the counterweight steel ring, the bottom surface of the auxiliary limiting block is on the same plane as the horizontal bottom surface of the counterweight steel ring. The top surface of the auxiliary limiting block of each telescopic rod gently abuts against the bottom wall of the volumetric flask under the action of the third spring force, thereby assisting in limiting the bottom of the volumetric flask and preventing the bottom of the volumetric flask from moving and affecting the fixing effect. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1 is a schematic diagram of the anti-tipping fixing structure of this utility model.

[0028] Figure 2 is an enlarged view of section A of this utility model.

[0029] Figure 3 is an enlarged view of section B of this utility model.

[0030] Figure 4 is an enlarged view of section C of this utility model.

[0031] Figure 5 is a structural schematic diagram of the counterweight steel ring of this utility model. Detailed Implementation

[0032] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0033] Example

[0034] As shown in Figures 1-5, this embodiment provides a tilt-proof fixing structure for a volumetric flask, including a counterweight steel ring 1 for surrounding the volumetric flask, three fixing components evenly distributed around the volumetric flask, and three telescopic rods 5 evenly distributed around the volumetric flask for auxiliary limiting.

[0035] The counterweight steel ring 1 adopts a closed-loop structure, and its outer surface consists of a curved surface and a horizontal bottom surface. The fixing assembly includes a connecting rod 2 and a stop rod 3. The connecting rod 2 is located above the counterweight steel ring 1 and is detachably connected to the counterweight steel ring 1 through a connector 4. The stop rod 3 is located above the connecting rod 2 and is hinged to the connecting rod 2 through a pin 8. The stop rod 3 is connected to the connecting rod 2 through a first spring 7 and rotates downward around the pin 8 under the tension of the first spring 7.

[0036] In this embodiment, to facilitate the replacement of the first spring 7, both ends of the first spring 7 are detachably connected to the connecting rod 2 and the abutment rod 3, respectively.

[0037] The first spring 7 has a ring at each end, namely a first ring and a second ring. The connecting rod 2 is provided with a fixing rod 201 and a first nut 202 for installing the first spring 7. One end of the fixing rod 201 is fixedly connected to the connecting rod 2, and the other end has a first external thread section. The first ring of the first spring 7 is movably fitted on the side of the first external thread section of the fixing rod 201 near the connecting rod 2. The first nut 202 is threaded onto the first external thread section, limiting the first ring of the first spring 7 on the fixing rod 201.

[0038] The abutment rod 3 is provided with a movable rod 303 for installing the first spring 7 and a second nut 304. One end of the movable rod 303 has an enlarged end and the other end has a second external thread section. The abutment rod 3 has a through hole 301 for the enlarged end to pass through. On the side of the through hole 301 near the connecting rod 2, there is an oblong hole 302 for the movable rod 303 to move into. After the enlarged end of the movable rod 303 passes through the through hole 301, the movable rod 303 moves into the oblong hole 302. The enlarged end and the second external thread section are located on both sides of the abutment rod 3. The second ring of the first spring 7 is movably fitted on the movable rod 303 and is located between the second external thread section and the abutment rod 3. The second nut 304 is threaded on the second external thread section, limiting the second ring of the first spring 7 on the movable rod 303.

[0039] In this embodiment, the connector 4 is a plastic part, including an integrally formed sleeve part and a snap-fit ​​part. The side of the sleeve part away from the snap-fit ​​part is movably fitted onto the outside of the connecting rod 2. The counterweight steel ring 1 has a straight cylindrical section 104 corresponding to each connector 4 to facilitate the rotation of the connector 4. The snap-fit ​​part has an arc structure that matches the cylindrical section of the counterweight steel ring 1. The side of the snap-fit ​​part away from the sleeve part has a slot 401 for snapping the cylindrical section 104 of the counterweight steel ring 1. The cylindrical section 104 of the counterweight steel ring 1 is movably snapped into the slot 401. This snap-fit ​​and fitted connection method makes the disassembly and assembly operations between the connecting rod 2 and the connector 4, and between the connector 4 and the counterweight steel ring 1, very simple.

[0040] In this embodiment, a positioning pin 101 is provided on the counterweight steel ring 1. A mounting groove for the positioning pin 101 to enter or partially move out is opened in the radial direction on the superior arc surface of the counterweight steel ring 1. The positioning pin 101 is installed in the mounting groove by a second spring 102. The second spring 102 is set in the mounting groove, and the two ends of the second spring 102 are respectively connected to the bottom surface of the mounting groove and the positioning pin 101.

[0041] Five positioning slots 402 are evenly distributed circumferentially within the slot 401 of the connector 4, allowing the positioning pin 101 to partially enter. When the connector 4 is engaged with the counterweight ring 1, the tilt angle of the connecting rod 2 is adjusted by rotating the connecting rod 2, thereby adjusting the height of the abutment rod 3 to accommodate different sized volumetric bottles. The connector 4 rotates around the counterweight ring 1 as the connecting rod 2 rotates. After the connecting rod 2 is adjusted to its position, the positioning pin 101 extends partially out of the mounting slot and enters the corresponding positioning slot under the elastic force of the second spring, achieving relative positioning of the connector 4 and the counterweight ring 1, thus fixing the connecting rod 2. In this embodiment, the positioning slot 402 is a through slot extending axially along the connector 4. When the positioning pin 101 extends into the positioning slot to position the angle of the connecting rod 2, the positioning pin 101 can undergo phase movement within the positioning slot, achieving the purpose of adjusting the position of the connecting rod 2 on the counterweight ring 1 by moving the connector 4.

[0042] The counterweight steel ring 1 has three hinged through slots 103 for installing telescopic rods on its horizontal bottom surface. The telescopic rod 5 includes a fixed section 501 and a telescopic section 502. The telescopic section 502 is installed in the fixed section 501 by a third spring 503 and moves away from the fixed section 501 under the elastic force of the third spring 503. The fixed section 501 has a telescopic section receiving slot. The telescopic section 502 is movably set in the telescopic section receiving slot. The third spring 503 is set in the telescopic section receiving slot. The two ends of the third spring 503 are connected to the bottom surface of the telescopic section receiving slot and the telescopic section 502, respectively. An auxiliary limiting block 6 is installed on the side of the telescopic section 502 of the telescopic rod 5 away from the fixed section 501. The side of the fixed section 501 of the telescopic rod 5 away from the telescopic section 502 is installed in the corresponding hinge slot 103 through the hinge shaft 504. The telescopic rod 5 rotates around the hinge shaft 504 between the first position inside the counterweight steel ring 1 and the second position outside the counterweight steel ring 1. When the telescopic rod 5 rotates to the first position inside the counterweight steel ring 1, the bottom surface of the auxiliary limiting block 6 is on the same plane as the horizontal bottom surface of the counterweight steel ring 1, and the top surface of the auxiliary limiting block 6 is an inclined surface that matches the bottom wall of the volumetric flask.

[0043] Working principle: When using the anti-tipping fixing structure, each telescopic rod 5 is rotated to the inside of the counterweight steel ring 1 in advance. At this time, each telescopic rod 5 is tilted from top to bottom towards the middle of the counterweight steel ring 1, and the abutment rod 3 is rotated to the inside of the connecting rod 2, so that the movable rod 303 at the end of the first spring 7 is connected to the abutment rod 3.

[0044] After preparation, place the volumetric flask normally on the bottom of the table or inside the equipment. Move the anti-tipping fixing structure from top to bottom and put it on the outside of the volumetric flask. As the counterweight steel ring 1 moves downward, the telescopic rod 5 rotates to the first position inside the counterweight steel ring under the push of the table or equipment until the counterweight steel ring 1 moves down to the table or equipment. At this time, the auxiliary limiting block 6 of the telescopic rod 5 gently abuts against the side wall at the bottom of the volumetric flask for auxiliary limiting, while the upper abutting rod 3 presses against the upper side wall of the volumetric flask under the pulling force of the first spring 7, thus completing the fixing of the volumetric flask.

[0045] When it is necessary to remove the volumetric flask, remove the movable rod 303 at the end of the first spring 7 from the abutment rod 3, or rotate the abutment rod 3 to overcome the tension of the first spring 7 and rotate it to the outside of the connecting rod 2, away from the volumetric flask. Manually lift the anti-tipping fixing structure upwards, and the volumetric flask will push the telescopic rod 5 to rotate outwards until the anti-tipping fixing structure is removed from the volumetric flask.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A tilt-prevention and fixing structure for a volumetric flask, characterized in that: It includes a counterweight steel ring for surrounding the volumetric flask; and several fixing components evenly distributed around the volumetric flask. The fixing components include a connecting rod and an abutting rod. The connecting rod is positioned above the counterweight steel ring and is detachably connected to the counterweight steel ring via a connector. The abutting rod is positioned above the connecting rod and is hinged to the connecting rod via a pin. The abutting rod is connected to the connecting rod via a first spring and rotates downward around the pin under the tension of the first spring.

2. The anti-tipping and fixing structure for volumetric flasks according to claim 1, characterized in that: The first spring is detachably connected to a connecting rod and a connecting rod at both ends. The connecting rod has a fixed rod and a first nut for mounting the first spring. One end of the fixed rod is fixedly connected to the connecting rod, and the other end has a first external thread section. The first spring is movably fitted onto the side of the first external thread section of the fixed rod near the connecting rod. The first nut is threaded onto the first external thread section, limiting the first spring on the fixed rod. The connecting rod has a movable rod and a second nut for mounting the first spring. One end of the movable rod has an enlarged end, and the other end has a second external thread section. The connecting rod has a through hole for the enlarged end to pass through. On the side of the through hole near the connecting rod, there is an oblong hole for the movable rod to move into. After the enlarged end of the movable rod passes through the through hole, the movable rod moves into the oblong hole. The enlarged end and the second external thread section are located on both sides of the connecting rod. The first spring is movably fitted onto the movable rod and located between the second external thread section and the connecting rod. The second nut is threaded onto the second external thread section, limiting the first spring on the movable rod.

3. The anti-tipping and fixing structure for volumetric flasks according to claim 1, characterized in that: The outer surface of the counterweight steel ring consists of a curved surface and a horizontal bottom surface.

4. The anti-tipping and fixing structure for volumetric flasks according to claim 3, characterized in that: The connector includes an integrally formed sleeve portion and a snap-fit ​​portion. The side of the sleeve portion away from the snap-fit ​​portion is movably fitted onto the outside of the connecting rod. The snap-fit ​​portion has an arc-shaped structure that matches the counterweight steel ring. The side of the snap-fit ​​portion away from the sleeve portion has a slot for snapping the counterweight steel ring, and the counterweight steel ring is movably snapped into the slot.

5. The anti-tipping and fixing structure for volumetric flasks according to claim 4, characterized in that: The counterweight steel ring is provided with a positioning pin. A mounting groove is opened radially on the superior arc surface of the counterweight steel ring for the positioning pin to enter or partially move out. The positioning pin is installed in the mounting groove by a second spring. The connector has several positioning grooves evenly opened circumferentially for the positioning pin to partially enter. When the connector is engaged with the counterweight steel ring, the positioning pin extends out of the mounting groove and enters the corresponding positioning groove under the elastic force of the second spring.

6. The anti-tipping and fixing structure for volumetric flasks according to claim 5, characterized in that: The positioning groove is a through groove extending along the axial direction of the connector.

7. The anti-tipping and fixing structure for volumetric flasks according to claim 3, characterized in that: The anti-tipping and fixing structure of the volumetric flask also includes several telescopic rods evenly distributed around the volumetric flask for auxiliary positioning. Several hinged slots for installing the telescopic rods are opened on the horizontal bottom surface of the counterweight steel ring. The telescopic rod includes a fixed section and a telescopic section. The telescopic section is installed in the fixed section by a third spring and moves away from the fixed section under the elastic force of the third spring. An auxiliary limiting block is installed on the side of the telescopic section away from the fixed section. The side of the fixed section of the telescopic rod away from the telescopic section is installed in the corresponding hinged slot by a hinge shaft. The telescopic rod rotates around the hinge shaft between a first position inside the counterweight steel ring and a second position outside the counterweight steel ring. When the telescopic rod rotates to the first position inside the counterweight steel ring, the bottom surface of the auxiliary limiting block is on the same plane as the horizontal bottom surface of the counterweight steel ring, and the top surface of the auxiliary limiting block is an inclined surface that matches the bottom wall of the volumetric flask.

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