Fixing and placing rack for experimental volumetric flasks

Abstract

The utility model discloses an experimental volumetric flask fixing and placing frame which comprises a fixing frame, at least three lifting grooves are evenly formed in the inner wall of the side face of the fixing frame, fixing columns are connected between the inner walls of the tops and the inner walls of the bottoms of the lifting grooves in a sliding mode, and the circumferential side face of each fixing column is connected with a lifting plate in a sliding mode. The side face of the lifting plate is slidably connected to the inner wall of the side face of the lifting groove and fixedly connected with a lifting frame located in the fixing frame. Through the arrangement of the clamping plate, a volumetric flask is moved to the slotting position, the volumetric flask extrudes the clamping plate open, the volumetric flask is moved to the position above the supporting cylinder along the clamping plate, the volumetric flask is pressed downwards and placed on the top of the supporting cylinder, the third spring pushes the clamping plate to move, the clamping plate clamps the volumetric flask in the horizontal direction, and the second spring drives the lifting plate to move; the lifting plate drives the lifting frame to move, and the lifting frame drives the clamping plate to move, so that the clamping plate presses and clamps the cambered surface of the volumetric flask in the vertical direction.

Description

Technical Field

[0001] The utility model relates to the technical field of a volumetric flask placement rack, in particular to a fixed placement rack for experimental volumetric flasks. Background Art

[0002] A volumetric flask is a precise instrument used to prepare solutions with an accurate molar concentration of a certain substance. It is a slender-necked, pear-shaped, flat-bottomed glass bottle with a ground glass stopper. When using a volumetric flask, it must be stored on a rack.

[0003] After searching, the utility model patent with application number 202122754818.0 is named as a reagent rack for storing volumetric flasks. The patented device fixes the placement of the volumetric flask by matching the bottle body holes on the middle placement plate with the guide fixing grooves on the top fixing plate, which can ensure that the volumetric flask can be stably placed in a water bath or during daily storage and is not easy to tip over. At the same time, the volumetric flask storage reagent rack of the utility model can realize the orderly and stable placement of multiple volumetric flasks, providing convenient conditions for orderly logistics for experiments and daily management, and ensuring the safety of the experimental process.

[0004] However, when placing volumetric flasks of different sizes, the patented device may cause the volumetric flasks to tilt or even fall over and leak due to the incompatibility between the volumetric flasks and the device, thus affecting the safety of the device when in use. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a fixed placement rack for experimental volumetric flasks.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fixed placement rack for experimental volumetric flasks comprises a fixed rack, at least three lifting grooves are evenly opened on the inner wall of the side of the fixed rack, a fixed column is slidably connected between the top inner wall and the bottom inner wall of the lifting groove, a lifting plate is slidably connected to the circumferential side of the fixed column, the side of the lifting plate is slidably connected to the inner wall of the side of the lifting groove, the side of the lifting plate is fixedly connected to the lifting rack located inside the fixed rack, and a clamping plate located inside the fixed rack is slidably connected between the top and bottom of the lifting rack.

[0008] Preferably, a second spring surrounding a fixed column is fixedly connected between the bottom of the lifting plate and the bottom inner wall of the lifting slot, a limiting column is fixedly connected between the two inner walls of the lifting frame, the interior of the splint is slidably connected to the circumferential side of the limiting column, and a third spring surrounding the limiting column is fixedly connected between one side of the splint and the inner wall of one side of the lifting frame.

[0009] Preferably, slots aligned with the lifting grooves are evenly formed between the inner and outer walls of the top of the fixing frame, placing grooves aligned with the slots are evenly formed on the inner wall of the bottom of the fixing frame, and a support cylinder is fixedly connected to the inner wall of the bottom of the placing groove.

[0010] Preferably, telescopic grooves communicating with the placing grooves are evenly formed on the inner wall of the bottom of the fixing frame, a telescopic cylinder is slidably connected to the inner circumferential side wall of the telescopic groove, and a first spring is fixedly connected between the bottom of the telescopic cylinder and the inner wall of the bottom of the telescopic groove.

[0011] Preferably, the top of the telescopic cylinder extends into the interior of the support cylinder, a suction cup located above the support cylinder is fixedly connected to the top of the telescopic cylinder, and an opening located outside the telescopic groove is formed between the inner and outer walls of the circumferential side of the telescopic cylinder.

[0012] Preferably, moving grooves communicating with the slots are evenly formed on the top of the fixing frame, positioning columns are fixedly connected between the inner walls on both sides of the moving groove, a moving plate is slidably connected to the circumferential side of the positioning column, and the bottom of the moving plate is slidably connected to the inner wall of the bottom of the moving groove.

[0013] Preferably, a fourth spring surrounding the positioning column is fixedly connected between the side of the moving plate and the inner side wall of the moving groove, and a concave block located inside the slot is fixedly connected to the side of the moving plate.

[0014] Compared with the prior art, the present utility model provides an experimental volumetric flask fixing and placing rack, which has the following beneficial effects:

[0015] By arranging the clamping plates, when the volumetric flask is moved to the slot, the volumetric flask squeezes open the clamping plates, and the volumetric flask is moved along the clamping plates to the upper part of the support cylinder, and the volumetric flask is pressed down and placed on the top of the support cylinder. The third spring pushes the clamping plates to move, and the clamping plates clamp the volumetric flask in the horizontal direction. The second spring drives the lifting plate to move, the lifting plate drives the lifting frame to move, and the lifting frame drives the clamping plates to move, so that the clamping plates press and clamp the arc surface of the volumetric flask in the vertical direction, which is beneficial to preventing the volumetric flask from tilting or even toppling and leaking due to the mismatch between the volumetric flask and the device when placing volumetric flasks of different sizes and specifications, thus affecting the safety during the use of the device. Pull the concave block to move the concave block to fit on the outer wall of the volumetric flask, so that the volumetric flask keeps a vertical posture, which is beneficial to keeping the volumetric flask in a vertical state and having a stable center of gravity when the device places the volumetric flask, further preventing the volumetric flask from tilting or toppling, and improving the safety of the device. Release the concave block, and the fourth spring drives the concave block to disengage from the volumetric flask. The volumetric flask is placed on the support cylinder and presses on the suction cup, which is beneficial to assisting the device to fix the volumetric flask and preventing the volumetric flask from moving when the device shakes. When taking out the volumetric flask, pull the volumetric flask, the volumetric flask drives the suction cup and the telescopic cylinder to move, and the telescopic cylinder drives the opening to extend out of the telescopic groove, so that the suction cup releases the volumetric flask, which is beneficial to improving the convenience of taking out the volumetric flask by the device. Description of the Drawings

[0016] Figure 1 Schematic diagram of the overall structure of a fixed placement rack for experimental volumetric flasks proposed by the present utility model;

[0017] Figure 2 Schematic diagram of the internal structure of a fixed placement rack for experimental volumetric flasks proposed by the present utility model;

[0018] Figure 3 Schematic diagram of the partial structure of a fixed placement rack for experimental volumetric flasks proposed by the present utility model;

[0019] Figure 4 is Figure 3 Schematic diagram of the enlarged structure at position A in

[0020] In the figure: 1 - fixing frame, 2 - placement groove, 3 - support cylinder, 4 - telescopic groove, 5 - opening, 6 - first spring, 7 - telescopic cylinder, 8 - suction cup, 9 - lifting groove, 10 - fixing column, 11 - second spring, 12 - clamping plate, 13 - limiting column, 14 - lifting plate, 15 - lifting frame, 16 - third spring, 17 - slotted opening, 18 - moving groove, 19 - positioning column, 20 - fourth spring, 21 - moving plate, 22 - concave block. Specific implementation mode

[0021] Referring to Figures 1-4 , a fixed placement rack for experimental volumetric flasks includes a fixing frame 1. At least three lifting grooves 9 are evenly formed in the inner wall of the side surface of the fixing frame 1. A fixing column 10 is slidably connected between the top inner wall and the bottom inner wall of the lifting groove 9. The circumferential side surface of the fixing column 10 is slidably connected with a lifting plate 14. The side surface of the lifting plate 14 is slidably connected to the inner wall of the side surface of the lifting groove 9. The side surface of the lifting plate 14 is fixedly connected with a lifting frame 15 located inside the fixing frame 1. A clamping plate 1 is slidably connected between the top and the bottom of the lifting frame 15 and is located inside the fixing frame 1.

[0022] In the present utility model, a second spring 11 surrounding the fixing column 10 is fixedly connected between the bottom of the lifting plate 14 and the bottom inner wall of the lifting groove 9. A limiting column 13 is fixedly connected between the two inner walls of the lifting frame 15. The inside of the clamping plate 12 is slidably connected to the circumferential side surface of the limiting column 13. A third spring 16 surrounding the limiting column 13 is fixedly connected between one surface of the clamping plate 12 and the inner wall of one surface of the lifting frame 15.

[0023] Slotted openings 17 aligned with the lifting grooves 9 are evenly formed between the top inner wall and the outer wall of the fixing frame 1. Placement grooves 2 aligned with the slotted openings 17 are evenly formed in the bottom inner wall of the fixing frame 1. A support cylinder 3 is fixedly connected to the bottom inner wall of the placement groove 2.

[0024] The inner wall of the bottom of the fixing frame 1 is evenly provided with telescopic grooves 4 communicating with the placement groove 2. The inner wall of the circumferential side of the telescopic groove 4 is slidably connected with a telescopic cylinder 7. A first spring 6 is fixedly connected between the bottom of the telescopic cylinder 7 and the inner wall of the bottom of the telescopic groove 4.

[0025] The top of the telescopic cylinder 7 extends into the interior of the support cylinder 3. The top of the telescopic cylinder 7 is fixedly connected with a suction cup 8 located above the support cylinder 3. An opening 5 located outside the telescopic groove 4 is provided between the inner wall and the outer wall of the circumferential side of the telescopic cylinder 7.

[0026] The top of the fixing frame 1 is evenly provided with moving grooves 18 communicating with the slotted groove 17. A positioning column 19 is fixedly connected between the inner walls on both sides of the moving groove 18. A moving plate 21 is slidably connected to the circumferential side of the positioning column 19. The bottom of the moving plate 21 is slidably connected to the inner wall of the bottom of the moving groove 18.

[0027] A fourth spring 20 surrounding the positioning column 19 is fixedly connected between the side of the moving plate 21 and the inner wall of the side of the moving groove 18. A concave block 22 located inside the slotted groove 17 is fixedly connected to the side of the moving plate 21.

[0028] Working principle: Move the volumetric flask to the slotted groove 17. The volumetric flask squeezes open the clamping plate 12 and moves the volumetric flask along the clamping plate 12 to the upper part of the support cylinder 3. Press the volumetric flask down and place it on the top of the support cylinder 3. The third spring 16 pushes the clamping plate 12 to move, and the clamping plate 12 clamps the volumetric flask in the horizontal direction. The second spring 11 drives the lifting plate 14 to move, the lifting plate 14 drives the lifting frame 15 to move, and the lifting frame 15 drives the clamping plate 12 to move, so that the clamping plate 12 presses and clamps the arc surface of the volumetric flask in the vertical direction, which is beneficial to prevent the volumetric flask from tilting or even toppling and leaking when the device is placing volumetric flasks of different sizes and specifications, affecting the safety of the device during use. Pull the concave block 22 and move the concave block 22 to fit on the outer wall of the volumetric flask, so that the volumetric flask maintains a vertical posture, which is beneficial to keep the volumetric flask in a vertical state and stable center of gravity when the device places the volumetric flask, and further prevent the volumetric flask from tilting or toppling, improving the safety of the device. Release the concave block 22, and the fourth spring 20 drives the concave block 22 to disengage from the volumetric flask. The volumetric flask placed on the support cylinder 3 presses on the suction cup 8, which is beneficial to assist the device in fixing the volumetric flask and prevent the volumetric flask from moving when the device shakes. When taking out the volumetric flask, pull the volumetric flask, the volumetric flask drives the suction cup 8 and the telescopic cylinder 7 to move, and the telescopic cylinder 7 drives the opening 5 to extend out of the telescopic groove 4, so that the suction cup 8 releases the volumetric flask, which is beneficial to improve the convenience of taking out the volumetric flask by the device.

[0029] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. An experimental volumetric flask fixed placement rack, comprising a fixed rack (1), characterized in that, At least three lifting grooves (9) are evenly formed in the inner wall of the side surface of the fixing frame (1). A fixing column (10) is slidably connected between the top inner wall and the bottom inner wall of the lifting groove (9). A lifting plate (14) is slidably connected to the circumferential side surface of the fixing column (10). The side surface of the lifting plate (14) is slidably connected to the inner wall of the side surface of the lifting groove (9). A lifting frame (15) located inside the fixing frame (1) is fixedly connected to the side surface of the lifting plate (14). A clamping plate (12) located inside the fixing frame (1) is slidably connected between the top and the bottom of the lifting frame (15).

2. The fixed placement rack for an experimental volumetric flask according to claim 1, wherein, A second spring (11) surrounding the fixing column (10) is fixedly connected between the bottom of the lifting plate (14) and the bottom inner wall of the lifting groove (9). A limiting column (13) is fixedly connected between the two inner walls of the lifting frame (15). The clamping plate (12) is slidably connected to the circumferential side surface of the limiting column (13). A third spring (16) surrounding the limiting column (13) is fixedly connected between one surface of the clamping plate (12) and the inner wall of one surface of the lifting frame (15).

3. The fixed placement rack for experimental volumetric flasks according to claim 2, wherein, Open slots (17) aligned with the lifting grooves (9) are evenly formed between the top inner wall and the outer wall of the fixing frame (1). Placement grooves (2) aligned with the open slots (17) are evenly formed in the bottom inner wall of the fixing frame (1). A support cylinder (3) is fixedly connected to the bottom inner wall of the placement groove (2).

4. The fixed placement rack for an experimental volumetric flask according to claim 3, characterized in that, Expansion slots (4) communicating with the placement grooves (2) are evenly formed in the bottom inner wall of the fixing frame (1). An expansion cylinder (7) is slidably connected to the inner wall of the circumferential side surface of the expansion slot (4). A first spring (6) is fixedly connected between the bottom of the expansion cylinder (7) and the bottom inner wall of the expansion slot (4).

5. The fixed placement rack for an experimental volumetric flask according to claim 4, wherein, The top of the expansion cylinder (7) extends into the support cylinder (3). A suction cup (8) located above the support cylinder (3) is fixedly connected to the top of the expansion cylinder (7). An opening (5) located outside the expansion slot (4) is formed between the inner wall and the outer wall of the circumferential side surface of the expansion cylinder (7).

6. The fixed placement rack for experimental volumetric flasks according to claim 5, characterized in that, Moving slots (18) communicating with the open slots (17) are evenly formed in the top of the fixing frame (1). A positioning column (19) is fixedly connected between the two inner walls of the moving slot (18). A moving plate (21) is slidably connected to the circumferential side surface of the positioning column (19). The bottom of the moving plate (21) is slidably connected to the bottom inner wall of the moving slot (18).

7. The fixed placement rack for experimental volumetric flasks according to claim 6, wherein, A fourth spring (20) surrounding the positioning column (19) is fixedly connected between the side surface of the moving plate (21) and the inner wall of the side surface of the moving slot (18). A concave block (22) located inside the open slot (17) is fixedly connected to the side surface of the moving plate (21).

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