Double-end burette
By designing and adjusting the coordination between the ball and spring in the buret tube, the bottom of the test tube is closed or opened, and the design of the needle and small test tube sleeve is achieved to achieve accurate liquid export, which solves the blockage of the buret tube in the pointed-nozzle glass tube and the difficulty in controlling the flow rate. The problem of small capacity improves the accuracy and efficiency of the experiment.
Patent Information
- Application Number
- CN202420871390.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The existing buret tube cannot continue to titrate after the pointed-nozzle glass tube is blocked, and it is difficult to achieve end point control of the large-capacity buret tube, which can easily lead to excessive or insufficient titration. The capacity of the microtiter tube is too small and requires frequent rehydration.
A double-headed buret tube is designed to enable the closure or opening of the bottom of the test tube by adjusting the fit between the ball and the spring, preventing leakage, and adjusting the liquid output. At the same time, through the design of needle and small test tube sleeve, the accurate liquid is achieved.
It effectively prevents liquid leakage, realizes precise control and adjustment of liquid, and improves the accuracy and efficiency of experiments.
Smart Images
Figure CN222461402U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of double-head burettes, in particular to a double-head burette. Background Art
[0002] The burette is divided into an acid burette and an alkaline burette. The lower end of the acid burette is a glass piston. The lower end of the alkaline burette is connected to a small glass tube with a pointed mouth by a rubber tube. According to the capacity, the burette is divided into a large-capacity burette and a micro-burette. The capacity and titration hole of the large-capacity burette are larger, and the drop volume of one drop is about 0.03-0.05mL. The capacity and titration hole of the micro-burette are smaller, and the drop volume of one drop is about 0.006-0.01mL.
[0003] The existing burette has the following defects:
[0004] Once the pointed glass tube is clogged, titration cannot continue;
[0005] 2. The flow rate of the large-capacity burette with a pointed glass tube is large, which makes it difficult to achieve endpoint control and easily leads to over-titration or under-titration;
[0006] 3. Although the microburette can achieve precise endpoint control, its capacity is relatively small, so frequent refilling is required during the titration process. Utility Model Content
[0007] The utility model aims to provide a double-head burette, which can close or open the bottom of the test tube body by turning the adjustment handle through the cooperation of the second spring and the top block to rotate the adjustment rod. Due to the setting of the first spring, the adjustment ball is in close contact with the inside of the test tube body, thereby effectively preventing leakage and adjusting the liquid output. The flow rate of the pointed glass tube of the large-capacity burette is large, and it is difficult to achieve end point control, which easily leads to the problem of over-titration or under-titration.
[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0009] The utility model is a double-head burette, comprising a test tube body, the top of the test tube body is in contact with a bottle stopper, and the right side of the test tube body is fixedly connected with a quantity identification sticker;
[0010] A small test tube sleeve is arranged on the left side of the test tube main body, a large test tube sleeve is arranged on the right side of the test tube main body, and a small test tube outlet is fixedly connected to the left side of the test tube main body.
[0011] Furthermore, an adjusting ring is fixedly connected to the bottom of the test tube body, a small outlet of the test tube is fixedly connected to the bottom of the adjusting ring, a sealing ring is threadedly connected to the right side of the adjusting ring, a spring 1 is fixedly connected to the left side of the sealing ring, the left side of the spring 1 contacts an adjusting rod, and an adjusting ball is fixedly connected to the center of the adjusting rod.
[0012] Furthermore, the outer surface of the adjusting ball contacts the inner wall of the test tube body, the left side of the adjusting rod located on the left side is threadedly connected to a connecting ring 2, the inner wall of the connecting ring 2 is rotatably connected to the outer surface of the adjusting rod, the outer surface of the adjusting rod is provided with an ejection slot, the inner wall of the ejection slot is fixedly connected to a spring 2, and the spring 2 is wound and connected to a top block.
[0013] Furthermore, the side of the top block away from the second spring contacts with an adjustment handle, the bottom of the adjustment ring is fixedly connected to a large test tube outlet, the right side of the small test tube outlet is fixedly connected to a small test tube sleeve, and the outer surface of the small test tube sleeve is provided with a threaded ring.
[0014] Furthermore, a connecting ring 1 is threadedly connected to the bottom of the small test tube sleeve, an inner wall of the connecting ring 1 contacts a needle, and an outer surface of the needle is provided with a diamond-shaped groove.
[0015] The utility model has the following beneficial effects:
[0016] The utility model sets an adjustment ball, specifically, turns the adjustment handle to rotate the adjustment rod through the cooperation of spring 2 and the top block to close or open the bottom of the test tube body. Due to the setting of spring 1, the adjustment ball is in close contact with the inside of the test tube body, thereby effectively preventing leakage and adjusting the liquid output.
[0017] The utility model sets a needle, specifically closes the regulating ball to tilt the liquid into the small outlet of the test tube, flows into the small test tube sleeve, and then fixes the needle through a connecting ring at the bottom of the small test tube sleeve, so that the guided experimental liquid and the needle are slowly moved around until the experimental effect is achieved, thereby improving the experimental accuracy.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the regulating ball of the utility model;
[0022] Figure 3 This is a schematic diagram of the structure of the second connecting ring of the utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the threaded ring of the utility model;
[0024] Figure 5 This is a structural schematic diagram of a connecting ring of the utility model.
[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0026] 1. Test tube body; 11. Bottle stopper; 12. Quantity identification sticker; 2. Large test tube outlet; 21. Large test tube sleeve; 3. Small test tube outlet; 31. Small test tube sleeve; 32. Connecting ring 1; 33. Needle; 34. Threaded ring; 4. Adjusting ring; 5. Sealing ring; 51. Spring 1; 52. Adjusting rod; 54. Adjusting ball; 55. Adjusting handle; 56. Connecting ring 2; 57. Top block; 58. Spring 2. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] See also Figure 1-5As shown, the utility model is a double-head burette, including a test tube body 1, a bottle stopper 11 is contacted with the top of the test tube body 1, a quantity identification label 12 is fixedly connected to the right side of the test tube body 1, a small test tube sleeve 31 is arranged on the left side of the test tube body 1, a large test tube sleeve 21 is arranged on the right side of the test tube body 1, a small test tube outlet 3 is fixedly connected to the left side of the test tube body 1, and the test liquid is discharged through the small test tube outlet 3, an adjusting ring 4 is fixedly connected to the bottom of the test tube body 1, the small test tube outlet 3 is fixedly connected to the bottom of the adjusting ring 4, and a sealing is threadedly connected to the right side of the adjusting ring 4. Sealing ring 5, a spring 1 51 is fixedly connected to the left side of the sealing ring 5, and an adjusting rod 52 is contacted to the left side of the spring 1 51. An adjusting ball 54 is fixedly connected to the center of the adjusting rod 52. Through the adjusting rod 52, power is generated to adjust the amount of output. The outer surface of the adjusting ball 54 contacts the inner wall of the test tube body 1. The left side of the adjusting rod 52 on the left side is threadedly connected with a connecting ring 2 56. The inner wall of the connecting ring 2 56 is rotatably connected to the outer surface of the adjusting rod 52. Specifically, the adjusting handle 55 is turned to rotate the adjusting rod 52 through the cooperation of the spring 2 58 and the top block 57 to adjust the amount of output. The bottom of the test tube body 1 is closed or opened. Due to the setting of the spring 1 51, the adjusting ball 54 is in close contact with the inside of the test tube body 1, thereby effectively preventing leakage and adjusting the liquid output. The outer surface of the adjusting rod 52 is provided with an ejection notch, and the inner wall of the ejection notch is fixedly connected with a spring 2 58. The spring 2 58 is wound and connected with a top block 57. The side of the top block 57 away from the spring 2 58 contacts the adjusting handle 55. The bottom of the adjusting ring 4 is fixedly connected with the test tube large outlet 2, through which the experimental liquid can be discharged. The right side of the test tube small outlet 3 is fixedly connected with a small The test tube sleeve 31, the outer surface of the small test tube sleeve 31 is provided with a threaded ring 34, the bottom of the small test tube sleeve 31 is threadedly connected with a connecting ring 1 32, the inner wall of the connecting ring 1 32 contacts with a needle 33, and the outer surface of the needle 33 is provided with a rhombus-shaped groove. Specifically, the regulating ball 54 is closed to tilt the liquid into the small outlet 3 of the test tube, and flow down the small test tube sleeve 31, and then the bottom of the small test tube sleeve 31 is fixed by the connecting ring 1 32, so that the guided experimental liquid and the needle 33 are slowly guided out until the experimental effect is achieved, thereby improving the experimental accuracy.
[0029] A specific application of this embodiment is as follows: before use, the device is first disinfected by removing the small test tube sleeve 31 on the outer surface of the test tube small outlet 3, then removing the large test tube sleeve 21 on the surface of the test tube large outlet 2, and pulling out the bottle stopper 11 on the top of the test tube body 1 to sterilize the device, and then fixing the needle 33 at the bottom of the test tube small outlet 3 through the connecting ring 1 32, and at the same time, the adjusting handle 55 is turned to cooperate with the top block 57 through the spring 2 58 so that the adjusting handle 555 can drive the top block 57 to rotate, thereby the top block 57 drives the adjusting rod 52 to rotate, and according to the adjusting rod 52 The adjusting ball 54 is adjusted by rotating the adjusting handle 55 to seal the bottom of the test tube body 1. Due to the setting of the spring 51, the adjusting ball 54 is in close contact with the inside of the test tube body 1, thereby effectively preventing leakage. Then, the small outlet 3 of the test tube is raised through the test tube stand, and then the experimental liquid is injected through the top of the test tube body 1 for use. Since the internal space of the test tube 1 is large enough, the test tube body 1 can store a sufficient amount of experimental liquid. Then, the device is placed in the experimental beaker or debugging cup, and the top block 57 is driven by twisting the adjusting handle 55, so that the adjusting rod 5 2 is rotated, thereby opening the regulating ball 54 to release the liquid into the large outlet 2 of the test tube, and adjusting the output amount according to the required effect, thereby conducting an experiment at the bottom of the large outlet 2 of the test tube, and then conducting an experiment. When the needle 33 is needed, the regulating ball 54 is closed to tilt the liquid into the small outlet 3 of the test tube, and then the small test tube sleeve 31 is downstream, and then the needle 33 is fixed at the bottom of the small test tube sleeve 31 through the connecting ring 1 32, so that the guided experimental liquid and the needle 33 are slowly guided out until the experimental effect is achieved, thereby improving the experimental accuracy.
[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0031] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A double-ended burette, comprising a test tube body (1), wherein the top of the test tube body (1) is in contact with a bottle stopper (11), characterized in that: A quantity identification sticker (12) is fixedly connected to the right side of the test tube body (1); A small test tube sleeve (31) is arranged on the left side of the test tube body (1), a large test tube sleeve (21) is arranged on the right side of the test tube body (1), and a small test tube outlet (3) is fixedly connected to the left side of the test tube body (1).
2. The double-head burette according to claim 1, characterized in that: An adjusting ring (4) is fixedly connected to the right side of the test tube body (1), a small test tube outlet (3) is fixedly connected to the outer surface of the adjusting ring (4), and a sealing ring (5) is threadedly connected to the right side of the adjusting ring (4).
3. The double-head burette according to claim 2, characterized in that: A spring 1 (51) is fixedly connected to the left side of the sealing ring (5), the left side of the spring 1 (51) contacts an adjustment rod (52), and an adjustment ball (54) is fixedly connected to the center of the adjustment rod (52).
4. The double-head burette according to claim 3, characterized in that: The outer surface of the adjusting ball (54) contacts the inner wall of the test tube body (1); the left side of the adjusting rod (52) is threadedly connected with a second connecting ring (56); the inner wall of the second connecting ring (56) contacts the outer surface of the adjusting rod (52).
5. The double-head burette according to claim 4, characterized in that: The outer surface of the adjusting rod (52) is provided with an ejection notch, the inner wall of the ejection notch is fixedly connected with a second spring (58), and the second spring (58) is provided with a top block (57).
6. The double-head burette according to claim 5, characterized in that: The side of the top block (57) away from the second spring (58) contacts with an adjustment handle (55), and the bottom of the adjustment ring (4) is fixedly connected with a large outlet (2) of the test tube.
7. The double-head burette according to claim 1, characterized in that: The right side of the test tube small outlet (3) is fixedly connected to a threaded ring (34), and the side of the threaded ring (34) is fixedly connected to a small test tube sleeve (31). The outer surface of the threaded ring (34) is threadedly connected to the small test tube sleeve (31). The bottom of the small test tube sleeve (31) is threadedly connected to a connecting ring 1 (32). The inner wall of the connecting ring 1 (32) contacts a needle (33), and the outer surface of the needle (33) is provided with a rhombus-shaped groove.