Burette with drip-proof function

Abstract

The utility model discloses a burette with a drip-proof function, which relates to the technical field of burettes and comprises a burette body, a glass cock is mounted at the lower end of the burette body, a rotary shifting plate is arranged on one side of the glass cock, a mounting slotted hole is formed in the rotary shifting plate, an end connecting pipe is inserted into the upper end of the burette body, and the end connecting pipe is connected with the lower end of the burette body. The outer surface of the end connecting pipe is fixedly connected with a side mounting frame, the interior of the side mounting frame is rotationally connected with an adjusting rod, through the arrangement of the end connecting pipe, when the glass cock is closed, the adjusting rod can be pulled to rotate through rotation of the rotary shifting plate, so that the sealing column is lifted, the vent groove is closed, and then the top of the pipe body can be sealed; meanwhile, according to the design, the end connecting pipe can be selectively installed according to actual requirements, practicability is high, the end connecting pipe and the pipe body are directly connected in an inserted mode, installation and detachment are convenient, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of burette technology, and in particular to a burette with anti-drip function. Background Technology

[0002] The main body of a burette is made of a glass tube with a uniform inner diameter and precise graduations. The lower end is connected to a glass stopcock or a latex tube containing glass beads to control the liquid flow rate. A pointed glass tube is then connected to the bottom end. A burette with a glass stopcock at the bottom is called an acid burette. It is commonly used to measure the volume of non-strongly alkaline dilute solutions. It is not suitable for holding alkaline solutions, as prolonged exposure to alkaline solutions can corrode the glass, preventing the stopcock from turning.

[0003] In the prior art, after prolonged use, the gaps inside the glass stopcock of the burette gradually increase due to corrosion from the molten metal and friction from repeated use. This causes the solution in the tip glass tube to drip even when the glass stopcock is closed during subsequent use, resulting in reduced accuracy and inconvenience. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that after prolonged use, the internal gap of the glass stopcock of the burette gradually increases due to corrosion from the molten liquid and friction from repeated use. This causes the solution in the tip glass tube to drip even when the glass stopcock is closed during subsequent use, resulting in reduced accuracy and inconvenience. Therefore, this invention proposes a burette with anti-drip function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a burette with anti-drip function, comprising a tube body, a glass stopcock installed at the lower end of the tube body, a rotating dial plate provided on one side of the glass stopcock, an installation slot provided inside the rotating dial plate, an end connector inserted into the upper end of the tube body, a side mounting bracket fixedly connected to the outer surface of the end connector, an adjusting rod rotatably connected inside the side mounting bracket, a base pad fixedly connected to the upper end of the end connector, a limiting bracket fixedly connected inside the base pad, a sealing column slidably connected inside the limiting bracket, a base plate fixedly connected to the lower end of the sealing column, a venting groove provided at the outer edge of the base plate, a sliding shaft provided above the middle part of the sealing column, a sliding groove provided on one side of the middle part of the adjusting rod, the sliding shaft being movably connected to the sliding groove, a connecting shaft rotatably connected inside the installation slot, and a connecting rope fixedly connected between the connecting shaft and the adjusting rod.

[0006] Preferably, a rubber pad is fixedly connected to the lower end of the base pad.

[0007] Preferably, a second rubber ring is fixedly connected to the lower end of the end pipe.

[0008] Preferably, the upper end of the glass stopcock is fixedly connected to a protective sleeve, and the inner diameter of the protective sleeve is larger than the outer diameter of the tube body.

[0009] Preferably, a rubber ring is fixedly connected to the upper center of the inside of the protective sleeve.

[0010] Preferably, the lower end of the glass stopcock is fitted with a pointed tube.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, by setting the end connector, when the glass stopcock is closed, the adjusting rod can be rotated by rotating the rotary dial, thereby lifting the sealing column and closing the vent groove, thus achieving the sealing of the top of the tube body, so as to prevent the solution in the nozzle tube and the tube body from dripping. At the same time, this design allows for selective installation of the end connector according to actual needs, which is highly practical. The end connector and the tube body can be directly plugged in, which is convenient for installation and disassembly, and is highly practical.

[0013] 2. In this utility model, the rubber pad is used to increase the sealing effect of the venting groove, prevent gas from entering, and increase the stability of use. The second rubber ring is used to increase the sealing between the end connector and the tube body. The protective sleeve and the first rubber ring can store the broken glass shards when the lower end of the tube body breaks, preventing them from splashing. The first rubber ring can squeeze the end of the tube body, confining it within the protective sleeve, preventing the tube body from detaching when it breaks. When taking it out, the tube body and the glass stopcock can be shaken to indicate that it has broken, facilitating the collection of fragments and increasing the safety of use. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a burette with anti-drip function is provided for this utility model;

[0015] Figure 2 An exploded view of a burette with anti-drip function is provided for this utility model;

[0016] Figure 3 This invention proposes a burette with anti-drip function. Figure 2 Enlarged structural diagram of region A in the middle;

[0017] Figure 4 This invention proposes a burette with anti-drip function. Figure 2 Enlarged structural diagram of region B in the middle;

[0018] Figure 5 This invention presents a partial structural diagram of a burette with anti-drip function.

[0019] Legend: 1. Tube body; 2. Glass stopcock; 3. Tip tube; 4. Rotating dial; 5. End tube; 6. Side mounting bracket; 7. Connecting rope; 8. Protective sleeve; 9. Connecting shaft; 10. Adjusting rod; 11. Slide groove; 12. Sealing column; 13. Base plate; 14. Vent groove; 15. Slide shaft; 16. Limiting bracket; 17. Base pad; 18. Rubber pad; 19. Rubber ring No. 1; 20. Mounting slot; 21. Rubber ring No. 2. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 - Figure 5 As shown, this utility model provides a burette with anti-drip function, including a tube body 1, a glass stopcock 2 installed at the lower end of the tube body 1, a rotating dial 4 provided on one side of the glass stopcock 2, an installation slot 20 opened inside the rotating dial 4, an end tube 5 inserted into the upper end of the tube body 1, a side mounting bracket 6 fixedly connected to the outer surface of the end tube 5, an adjusting rod 10 rotatably connected inside the side mounting bracket 6, a bottom pad 17 fixedly connected to the upper end of the end tube 5, a limiting bracket 16 fixedly connected inside the bottom pad 17, a sealing column 12 slidably connected inside the limiting bracket 16, a base plate 13 fixedly connected to the lower end of the sealing column 12, a venting groove 14 opened at the outer edge of the base plate 13, a sliding shaft 15 provided above the middle part of the sealing column 12, a sliding groove 11 opened on one side of the middle part of the adjusting rod 10, the sliding shaft 15 and the sliding groove 11 movably connected, a connecting shaft 9 rotatably connected inside the installation slot 20, and a connecting rope 7 fixedly connected between the connecting shaft 9 and the adjusting rod 10.

[0023] The specific settings and functions of this embodiment are described in detail below. With the end connector 5, when the glass stopcock 2 is closed, the adjusting rod 10 can be rotated by rotating the rotary lever 4, thereby lifting the sealing column 12 and closing the venting groove 14, thus achieving the sealing of the top of the tube body 1 to prevent the solution in the nozzle tube 3 from dripping. At the same time, this design allows for selective installation of the end connector 5 according to actual needs, making it highly practical. The end connector 5 can be directly plugged into the tube body 1, making installation and disassembly convenient and highly practical.

[0024] Example 2: Figure 1 - Figure 5 As shown, a rubber pad 18 is fixedly connected to the lower end of the bottom pad 17, a second rubber ring 21 is fixedly connected to the lower end of the end pipe 5, a second rubber ring 21 is fixedly connected to the lower end of the end pipe 5, a protective sleeve 8 is fixedly connected to the upper end of the glass stopcock 2, the inner diameter of the protective sleeve 8 is larger than the outer diameter of the tube body 1, a first rubber ring 19 is fixedly connected to the upper middle part inside the protective sleeve 8, and a pointed tube 3 is installed at the lower end of the glass stopcock 2.

[0025] The overall effect of this embodiment is as follows: the rubber pad 18 is used to increase the sealing effect of the venting groove 14, preventing gas from entering and increasing the stability of use; the second rubber ring 21 is used to increase the sealing between the end connector 5 and the tube body 1; the protective sleeve 8 and the first rubber ring 19 are used to store the broken glass shards when the lower end of the tube body 1 breaks, preventing them from splashing; the first rubber ring 19 can squeeze the end of the tube body 1, confining it within the protective sleeve 8, preventing the tube body 1 from detaching when it breaks; when taking it out, the tube body 1 can be shaken between it and the glass stopper 2, indicating that it has broken, facilitating the collection of fragments and increasing the safety of use.

[0026] The method of use and working principle of this device: When in use, rotate the rotary dial 4 to close the glass stopcock 2, clamp the tube body 1 with the clamp, and then pour the solution into the tube body 1. Selectively install the end connector 5 as needed. When installing the end connector 5, first insert the end connector 5 into the tube body 1, and then install the connecting shaft 9 into the mounting slot 20. When titrating, rotate the rotary dial 4 to open the glass stopcock 2, and the solution drips from the tip tube 3. After titration, rotate the rotary dial 4 in the opposite direction until the glass stopcock 2 is closed. During this process, the sealing column 12 gradually rises. When the glass stopcock 2 is closed, the vent groove 14 and the rubber pad 18 are squeezed to completely seal the upper end of the tube body 1.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A burette with anti-drip function, comprising a tube body (1), characterized in that: A glass stopcock (2) is installed at the lower end of the tube body (1). A rotating dial (4) is provided on one side of the glass stopcock (2). An installation slot (20) is opened inside the rotating dial (4). An end pipe (5) is inserted into the upper end of the tube body (1). A side mounting bracket (6) is fixedly connected to the outer surface of the end pipe (5). An adjusting rod (10) is rotatably connected inside the side mounting bracket (6). A bottom pad (17) is fixedly connected to the upper end of the end pipe (5). A limit bracket (16) is fixedly connected inside the bottom pad (17). 16) has a sealing column (12) internally slidingly connected. The lower end of the sealing column (12) is fixedly connected to a base plate (13). A ventilation groove (14) is provided at the outer edge of the base plate (13). A sliding shaft (15) is provided above the middle part of the sealing column (12). A sliding groove (11) is provided on one side of the middle part of the adjusting rod (10). The sliding shaft (15) is movably connected to the sliding groove (11). A connecting shaft (9) is rotatably connected inside the mounting slot (20). A connecting rope (7) is fixedly connected between the connecting shaft (9) and the adjusting rod (10).

2. A burette with anti-drip function according to claim 1, characterized in that: A rubber pad (18) is fixedly connected to the lower end of the bottom pad (17).

3. A burette with anti-drip function according to claim 1, characterized in that: The lower end of the end connector (5) is fixedly connected to a second rubber ring (21).

4. A burette with anti-drip function according to claim 1, characterized in that: The upper end of the glass stopcock (2) is fixedly connected to a protective sleeve (8), and the inner diameter of the protective sleeve (8) is larger than the outer diameter of the tube body (1).

5. A burette with anti-drip function according to claim 4, characterized in that: A rubber ring (19) is fixedly connected to the upper center of the inside of the protective sleeve (8).

6. A burette with anti-drip function according to claim 1, characterized in that: The lower end of the glass stopcock (2) is fitted with a pointed tube (3).

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