Replaceable metering tube for chemical experiment

Abstract

The utility model discloses a replaceable metering tube for chemical experiments, which relates to the technical field of metering tubes for chemical experiments and comprises a main body outer tube and a combined mechanism, and the combined mechanism for replaceable operation is arranged in the middle of the inner side of the main body outer tube. The combined mechanism comprises a mounting inner cavity, a supporting ring, a liquid storage inner pipe, a fixing pipe, an inserting rod, a sealing ring and an auxiliary end, the supporting ring is fixed to the surface of the inner wall of the mounting inner cavity, and the liquid storage inner pipe is arranged in the middle of the inner side of the mounting inner cavity. Compared with an existing device, according to the replaceable metering tube for the chemical experiment, all parts of the combined mechanism are matched, when the replaceable metering tube meets corrosive and dangerous liquid during use, only the liquid storage inner tube needs to be taken out and replaced, the waste of discarding of the whole metering tube can be reduced, and the practicability of the replaceable metering tube is improved. And meanwhile, the safety of the solution in the mounting inner cavity can be guaranteed, and the phenomenon that the solution is scattered due to the fact that the interior is damaged when external stress such as collision is encountered is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical experiment metering tubes, and particularly relates to a replaceable chemical experiment metering tube. Background Technique

[0002] Metrology refers to the activity of realizing unit unification and accurate and reliable measured values. During the metrology process, it is considered that the measuring tools and instruments used are standard, and they are used to calibrate and verify the measured tools and instrument equipment to measure and ensure the reliability of the measurement results obtained when using the measured tools and instruments for measurement. And a metering tube is often needed for cooperation during the metrology work.

[0003] When the existing metering tube is in use, it is often an integral test tube. When encountering corrosive and dangerous liquids during single use, the tube body is difficult to be reused, and the whole pipeline needs to be discarded, which will cause certain economic waste.

[0004] Therefore, research and improvement are carried out on the existing structure and deficiencies, and a replaceable chemical experiment metering tube is provided in order to achieve a more practical and valuable purpose. Content of the Utility Model

[0005] The purpose of the utility model is to provide a replaceable chemical experiment metering tube to solve the problem that when the existing metering tube is in use, it is often an integral test tube. When encountering corrosive and dangerous liquids during single use, the tube body is difficult to be reused, and the whole pipeline needs to be discarded, which will cause certain economic waste as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a replaceable chemical experiment metering tube, including a main body outer tube and a combination mechanism. The combination mechanism for replaceable operation is arranged in the middle inside the main body outer tube. The combination mechanism includes an installation inner cavity, a support ring, a liquid storage inner tube, a fixed tube, a plugging rod, a sealing ring and an auxiliary end. The inner wall surface of the installation inner cavity is fixed with a support ring, and a liquid storage inner tube is arranged in the middle inside the installation inner cavity. The top of the liquid storage inner tube is fixed with a fixed tube, and plugging rods are fixed on both sides below the fixed tube. A sealing ring is arranged on the lower surface of the fixed tube, and an auxiliary end is fixed on the top of the fixed tube.

[0007] Further, a covering mechanism for covering and sealing is installed on the top of the main body outer tube, and scale lines are arranged on the outer surface of the main body outer tube.

[0008] Further, the covering mechanism includes an upper tube cover and a threaded section. The lower side inside the upper tube cover is provided with a threaded section.

[0009] Further, the covering mechanism further includes a limiting ring, and a limiting ring is arranged at the top of the threaded section.

[0010] Further, the covering mechanism further includes a connecting spring, and a connecting spring is arranged above the interior of the upper tube cover.

[0011] Further, the covering mechanism further includes a sealing cover, and a sealing cover is arranged at the bottom of the connecting spring.

[0012] Compared with the prior art, the present utility model provides a replaceable metering tube for chemical experiments, which has the following beneficial effects:

[0013] 1. Through the cooperation between the various parts of the combination mechanism of the present utility model, when encountering corrosive and dangerous liquids during use, only the liquid storage inner tube needs to be taken out and replaced, which can reduce the waste of discarding the overall metering tube. At the same time, it can ensure the safety of the solution in the installation inner cavity, and prevent internal damage and spilling when encountering external forces such as bumps.

[0014] 2. Through the cooperation between the various parts of the covering mechanism of the present utility model, it can be automatically pressed down by force on the auxiliary end, thereby ensuring the sealing effect inside the metering tube to ensure the safety of the metering tube when storing liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall external three-dimensional structure of a replaceable metering tube for chemical experiments of the present utility model;

[0016] Figure 2 is a schematic diagram of the overall front internal structure of a replaceable metering tube for chemical experiments of the present utility model;

[0017] Figure 3 is a schematic diagram of the enlarged structure at A of a replaceable metering tube for chemical experiments of the present utility model Figure 2 in the present utility model;

[0018] Figure 4 is a schematic diagram of the enlarged structure at B of a replaceable metering tube for chemical experiments of the present utility model Figure 2 in the present utility model.

[0019] In the figure: 1, main body outer tube; 2, combination mechanism; 201, installation inner cavity; 202, support ring; 203, liquid storage inner tube; 204, fixed tube; 205, insertion rod; 206, sealing ring; 207, auxiliary end; 3, covering mechanism; 301, upper tube cover; 302, threaded section; 303, limiting ring; 304, connecting spring; 305, sealing cover; 4, scale line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs; the terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] As Figures 1 - 3 shown, a replaceable metering tube for chemical experiments includes a main body outer tube 1 and a combination mechanism 2. The combination mechanism 2 for replaceable operation is arranged in the middle inside the main body outer tube 1. The combination mechanism 2 includes an installation inner cavity 201, a support ring 202, a liquid storage inner tube 203, a fixing tube 204, a plugging rod 205, a sealing ring 206 and an auxiliary end 207. A support ring 202 is fixed on the inner wall surface of the installation inner cavity 201, and a liquid storage inner tube 203 is arranged in the middle inside the installation inner cavity 201. A fixing tube 204 is fixed at the top of the liquid storage inner tube 203, and plugging rods 205 are fixed on both sides below the fixing tube 204. A sealing ring 206 is arranged on the lower surface of the fixing tube 204, and an auxiliary end 207 is fixed at the top of the fixing tube 204;

[0023] Through the cooperation of the plugging rod 205 and the sealing ring 206 and the force that can be clamped by the auxiliary end 207, the liquid storage inner tube 203 can be disassembled and separated from the main body outer tube 1. Therefore, when encountering corrosive and dangerous liquids during use, only the liquid storage inner tube 203 needs to be taken out and replaced, which can reduce the waste of discarding the overall metering tube. At the same time, through the support ring 202, there is a certain space interlayer between the installation inner cavity 201 and the main body outer tube 1, so as to ensure the safety of the solution in the installation inner cavity 201 and prevent internal damage and spilling when encountering external forces such as bumps;

[0024] As Figure 1 、 Figure 2 and Figure 4As shown in the figure, a closing mechanism 3 for covering and sealing is installed at the top of the main body outer tube 1. Scale lines 4 are provided on the outer surface of the main body outer tube 1. The closing mechanism 3 includes an upper tube cover 301 and a threaded section 302. A threaded section 302 is provided on the lower side inside the upper tube cover 301. The closing mechanism 3 further includes a limiting ring 303. A limiting ring 303 is provided at the top of the threaded section 302. The closing mechanism 3 further includes a connecting spring 304. A connecting spring 304 is provided above the inside of the upper tube cover 301. The closing mechanism 3 further includes a sealing cover 305. A sealing cover 305 is provided at the bottom of the connecting spring 304. Through the connecting spring 304 and the sealing cover 305, after the upper tube cover 301 is screwed and installed with the main body outer tube 1 by using the threaded section 302, it can be automatically pressed downward on the auxiliary end 207 under force. The sealing cover 305 is made to closely adhere to the auxiliary end 207 by the pressure of the spring, so as to ensure the sealing effect inside the metering tube and ensure the safety of the metering tube when storing liquid.

[0025] Working principle: When using this replaceable metering tube for chemical experiments, first, through the insertion rod 205 and the sealing ring 206, and then in cooperation with the force that can be clamped by the auxiliary end 207, the liquid storage inner tube 203 can be disassembled and separated from the main body outer tube 1. Thus, when encountering corrosive and dangerous liquids during use, only the liquid storage inner tube 203 needs to be taken out and replaced. Subsequently, through the support ring 202, a certain space sandwich is formed between the installation inner cavity 201 and the main body outer tube 1, so as to ensure the safety of the solution in the installation inner cavity 201 and prevent it from being damaged and spilled due to external forces such as bumps. At this time, through the connecting spring 304 and the sealing cover 305, after the upper tube cover 301 is screwed and installed with the main body outer tube 1 by using the threaded section 302, it can be automatically pressed downward on the auxiliary end 207 under force. Finally, the sealing cover 305 is made to closely adhere to the auxiliary end 207 by the pressure of the spring, so as to ensure the sealing effect inside the metering tube.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A replaceable measuring tube for chemical experiments, comprising a main outer tube (1) and a combination mechanism (2), characterized in that: The combined mechanism (2) for replaceable operation is arranged at the middle part of the inner side of the main body outer tube (1), and the combined mechanism (2) comprises an installation inner cavity (201), a support ring (202), a liquid storage inner tube (203), a fixed tube (204), a plug-in rod (205), a sealing ring (206) and an auxiliary end (207). The support ring (202) is fixed on the inner wall surface of the installation inner cavity (201), and the liquid storage inner tube (203) is arranged at the middle part of the inner side of the installation inner cavity (201). The top of the liquid storage inner tube (203) is fixed with a fixed tube (204), and the plug-in rods (205) are fixed on both sides below the fixed tube (204). The lower surface of the fixed tube (204) is provided with a sealing ring (206), and the top of the fixed tube (204) is fixed with an auxiliary end (207).

2. A replaceable measuring tube for chemical experiments according to claim 1, characterized in that: A covering mechanism (3) for covering and sealing is installed on the top of the main body outer tube (1), and scale lines (4) are arranged on the outer surface of the main body outer tube (1).

3. A replaceable measuring tube for chemical experiments according to claim 2, characterized in that: The capping mechanism (3) comprises an upper tube cover (301) and a threaded section (302), and the threaded section (302) is provided on the inner lower side of the upper tube cover (301).

4. A replaceable measuring tube for chemical experiments according to claim 3, characterized in that: The closing mechanism (3) further comprises a limiting ring (303), and the limiting ring (303) is arranged on the top of the threaded section (302).

5. A replaceable measuring tube for chemical experiments according to claim 3, characterized in that: The covering mechanism (3) further comprises a connecting spring (304), and a connecting spring (304) is arranged above the interior of the upper tube cover (301).

6. A replaceable measuring tube for chemical experiments according to claim 5, characterized in that: The covering mechanism (3) further comprises a sealing cover (305), and the bottom of the connecting spring (304) is provided with a sealing cover (305).

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