Liquid storage dropper for laboratory

Abstract

The utility model discloses a laboratory liquid storage dropper which comprises a first pipe body, one end of the first pipe body is fixedly communicated with a rubber head structure, the other end of the first pipe body is fixedly connected with a threaded connection pipe, the outer surface of the threaded connection pipe is in threaded connection with a second pipe body, and the bottom end of the second pipe body is fixedly connected with a suction nozzle. A supporting assembly is arranged on the outer surface of the first pipe body. According to the dropper, after liquid is sucked, the supporting cylinder is taken down from the first pipe body in a rotating mode, the supporting cylinder is connected to the outer surface of the second pipe body in a threaded mode, and when the whole dropper is vertically placed on a table top, the supporting cylinder makes contact with the table top, it is guaranteed that the dropper can be stably and vertically placed, and the situation that the dropper rolls when the dropper is horizontally placed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of droppers, in particular to a liquid storage dropper for laboratories. Background Art

[0002] During laboratory experiments, rubber-tipped droppers are often used to draw up liquid reagents and medicines. They are used very frequently and are an indispensable glass instrument in the experimental process.

[0003] The wide-mouth bottles, reagent bottles and other bottles used in the laboratory have different sizes and heights, which requires droppers of different lengths. In particular, when there is very little liquid reagent remaining in the dropper bottle and it cannot be sucked up, it is necessary to replace the dropper of appropriate length. It is impossible to use one dropper for multiple purposes. Moreover, the traditional dropper is not convenient to be placed vertically after sucking up the liquid, which has certain limitations. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a liquid storage dropper for laboratory use.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a liquid storage dropper for laboratory use, comprising a first tube body, one end of which is fixedly connected to a rubber head structure, the other end of the first tube body is fixedly connected to a threaded connecting pipe, the outer surface of the threaded connecting pipe is threadedly connected to a second tube body, the bottom end of the second tube body is fixedly connected to a suction nozzle, and a support assembly is provided on the outer surface of the first tube body.

[0006] As a further description of the above technical solution:

[0007] The support assembly comprises a support tube threadedly connected to the outer surface of the first tube body, and a plurality of counterweight blocks arranged in a ring array are fixedly connected to the interior of the support tube.

[0008] As a further description of the above technical solution:

[0009] The support tube is made of transparent material, and the counterweight block is made of iron material.

[0010] As a further description of the above technical solution:

[0011] The outer surfaces of the first tube body and the second tube body are both provided with external threads matched with the support tube, and the suction nozzle is arranged in a conical shape.

[0012] As a further description of the above technical solution:

[0013] The rubber head structure includes a first sac-shaped rubber head fixedly connected to one end of the first tube body, the other end of the first sac-shaped rubber head fixedly connected to the second sac-shaped rubber head, and the other end of the second sac-shaped rubber head fixedly connected to the third sac-shaped rubber head. The first sac-shaped rubber head, the second sac-shaped rubber head and the third sac-shaped rubber head are successively larger.

[0014] As a further description of the above technical solution:

[0015] An embedding groove is formed on the outer surface of the threaded connecting pipe, a sealing ring is fixedly connected inside the embedding groove, and the sealing ring is fitted with the inner wall of the second tube body.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, the laboratory liquid storage dropper, after the liquid is absorbed, the support tube is rotated to remove the first tube body, and the support tube is threadedly connected to the outer surface of the second tube body. When the entire dropper is placed vertically on the table, the support tube is in contact with the table, which ensures that the dropper can be placed vertically stably and avoids the dropper from rolling when placed horizontally.

[0018] 2. Compared with the prior art, the laboratory liquid storage dropper can hold the second tube body with one hand and rotate the first tube body with the other hand, so that the threaded connecting tube comes out from the inside of the second tube body, thereby increasing the length of the first tube body and the second tube body, absorbing more liquid, and achieving multiple uses of one tube without changing different droppers. According to the amount of liquid absorbed, you can choose to press the first sac-shaped rubber head, the second sac-shaped rubber head or the third sac-shaped rubber head, with a wide range of choices. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of a liquid storage dropper for laboratory use proposed by the utility model;

[0020] Figure 2 This is a cross-sectional view of a second tube body of a liquid storage dropper for laboratory use proposed by the utility model;

[0021] Figure 3 The utility model provides a laboratory liquid storage dropper Figure 2 A partial enlarged view of middle A;

[0022] Figure 4 The utility model is a schematic diagram of a support tube of a liquid storage dropper for laboratory use.

[0023] Legend:

[0024] 1. First tube body; 2. First sac-shaped rubber head; 3. Second sac-shaped rubber head; 4. Third sac-shaped rubber head; 5. Threaded connecting tube; 6. Second tube body; 7. Suction nozzle; 8. Sealing ring; 9. Support tube; 10. Counterweight. DETAILED DESCRIPTION

[0025] 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 the embodiments. 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.

[0026] Reference Figures 1 to 4 The utility model provides a laboratory liquid storage dropper: comprising a first tube body 1, one end of the first tube body 1 is fixedly connected with a rubber head structure, the rubber head structure comprises a first sac-shaped rubber head 2 fixedly connected with one end of the first tube body 1, the other end of the first sac-shaped rubber head 2 is fixedly connected with a second sac-shaped rubber head 3, the other end of the second sac-shaped rubber head 3 is fixedly connected with a third sac-shaped rubber head 4, the first sac-shaped rubber head 2, the second sac-shaped rubber head 3 and the third sac-shaped rubber head 4 are successively larger;

[0027] The other end of the first tube body 1 is fixedly connected with a threaded connection tube 5, the outer surface of the threaded connection tube 5 is threadedly connected with a second tube body 6, the outer surface of the threaded connection tube 5 is provided with an embedding groove, the inside of the embedding groove is fixedly connected with a sealing ring 8, and the sealing ring 8 is fitted with the inner wall of the second tube body 6 to ensure the sealing after the length is adjusted;

[0028] A suction nozzle 7 is fixedly connected to the bottom end of the second tube body 6, and a support assembly is provided on the outer surface of the first tube body 1, and the support assembly includes a support tube 9 threadedly connected to the outer surface of the first tube body 1, and a plurality of counterweight blocks 10 arranged in a ring array are fixedly connected to the interior of the support tube 9, and the counterweight blocks 10 ensure the stability of the support tube 9. The support tube 9 is made of transparent material, and the counterweight blocks 10 are made of iron material. The outer surfaces of the first tube body 1 and the second tube body 6 are both provided with external threads compatible with the support tube 9, and the suction nozzle 7 is conically arranged.

[0029] Working principle:

[0030] When in use, the length of the first tube body 1 and the second tube body 6 is adjusted according to the amount of liquid to be sucked. When adjusting, the second tube body 6 is held with one hand and the first tube body 1 is rotated with the other hand, so that the threaded connection tube 5 comes out from the inside of the second tube body 6, thereby increasing the length of the first tube body 1 and the second tube body 6, sucking more liquid, and achieving multiple uses of one tube without changing different droppers. According to the amount of liquid to be sucked, the first sac-shaped rubber head 2, the second sac-shaped rubber head 3 or the third sac-shaped rubber head 4 can be pressed, and the selection is wide;

[0031] After the liquid is absorbed, the support tube 9 is rotated to remove from the first tube body 1, and the support tube 9 is threadedly connected to the outer surface of the second tube body 6. When the entire dropper is placed vertically on the table, the support tube 9 is in contact with the table, ensuring that the dropper can be placed vertically stably and avoiding the dropper from rolling when placed horizontally.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid storage dropper for laboratory use, comprising a first tube body (1), characterized in that: One end of the first tube body (1) is fixedly connected to a rubber head structure, the other end of the first tube body (1) is fixedly connected to a threaded connection pipe (5), the outer surface of the threaded connection pipe (5) is threadedly connected to a second tube body (6), the bottom end of the second tube body (6) is fixedly connected to a suction nozzle (7), and a support component is provided on the outer surface of the first tube body (1).

2. A laboratory liquid storage dropper according to claim 1, characterized in that: The support assembly comprises a support tube (9) threadedly connected to the outer surface of the first tube body (1), and a plurality of counterweight blocks (10) arranged in a ring array are fixedly connected to the interior of the support tube (9).

3. A laboratory liquid storage dropper according to claim 2, characterized in that: The support tube (9) is made of a transparent material, and the counterweight block (10) is made of an iron material.

4. A laboratory liquid storage dropper according to claim 2, characterized in that: The outer surfaces of the first tube body (1) and the second tube body (6) are both provided with external threads adapted to the support tube (9), and the suction nozzle (7) is arranged in a conical shape.

5. A laboratory liquid storage dropper according to claim 1, characterized in that: The rubber head structure comprises a first sac-shaped rubber head (2) fixedly connected to one end of the first tube body (1), the other end of the first sac-shaped rubber head (2) fixedly connected to a second sac-shaped rubber head (3), the other end of the second sac-shaped rubber head (3) fixedly connected to a third sac-shaped rubber head (4), and the first sac-shaped rubber head (2), the second sac-shaped rubber head (3) and the third sac-shaped rubber head (4) are successively larger in size.

6. A laboratory liquid storage dropper according to claim 1, characterized in that: The outer surface of the threaded connection pipe (5) is provided with an embedding groove, the interior of the embedding groove is fixedly connected with a sealing ring (8), and the sealing ring (8) is in contact with the inner wall of the second tube body (6).

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