Burette support

Abstract

The utility model discloses a burette support, which belongs to the technical field of chemical test, and comprises a base, a support rod fixedly connected to the upper end of the base, a lantern ring sleeved on the outer circumferential surface of the support rod, a burette butterfly clip fixedly connected to the outer circumferential surface of the lantern ring, a burette main body clamped at one end of the burette butterfly clip, and a burette support arranged on the burette main body. The lower end of the lantern ring is fixedly connected with three uniformly distributed inclined side elastic sheets, one side of each inclined side elastic sheet is fixedly connected with a rubber layer I, and the outer circumferential surface of the lantern ring is in threaded connection with an internal thread ring. According to the burette butterfly clamp, the phenomenon that the burette butterfly clamp falls down quickly in the adjusting process is avoided, the use safety is improved, the potential safety hazard is reduced, the burette butterfly clamp can be temporarily limited, a worker can conveniently rotate the internal thread ring to lock the burette butterfly clamp subsequently, the worker does not need to lift the burette butterfly clamp with the other hand all the time, and the burette butterfly clamp is convenient to operate and use by the worker.

Description

Technical Field

[0001] This utility model relates to the field of chemical testing technology, and more specifically, to a burette holder. 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 flow rate of the liquid. The bottom end is then connected to a pointed glass tube. A burette with a glass stopcock at the bottom is called an acid burette, which is often used to measure the volume of non-strongly alkaline dilute solutions. It is not suitable for holding alkaline solutions because prolonged exposure to alkaline solutions can corrode the glass, causing the stopcock to become unable to turn. A burette with a latex tube containing glass beads at the bottom is called an alkaline burette, which is often used to measure the volume of non-oxidizing dilute solutions. It is mainly used to measure the volume of alkaline dilute solutions. Acids that have oxidizing properties and corrode latex tubes cannot be used with alkaline burettes.

[0003] For example, publication number CN217663439U describes a burette holder that overcomes the technical problem of existing burette holders making it difficult to ensure the vertical placement of the burette during experiments, affecting the reading of the liquid level and scale, and compromising the accuracy of experimental results. It is also easy to adjust, and the installation of the burette body allows for quick replacement. However, this burette holder still has the following drawbacks during use:

[0004] The aforementioned burette holder uses a single locking screw for height adjustment of the clamp, resulting in poor stability. Furthermore, during adjustment, if the locking screw loosens, the other hand must constantly support the clamp on the holder or adjust it up and down. If the clamp slips due to external or personal factors (e.g., other workers bumping into the operator's arm, or the operator losing their grip during adjustment), it may fall onto the test bench, potentially damaging the clamp and affecting the work process. If reagent bottles are placed on the holder's platform, it could also lead to experimental accidents, posing a safety hazard. Therefore, this invention provides a burette holder. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a burette holder that solves the problem that the burette holder in the prior art uses a single locking screw to lock the clamp when adjusting the height, resulting in poor stability and certain safety hazards during the adjustment process.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A burette holder includes a base, a support rod is fixedly connected to the upper end of the base, a collar is sleeved on the outer circumference of the support rod, a burette butterfly clamp is fixedly connected to the outer circumference of the collar, and one end of the burette butterfly clamp holds the burette body.

[0010] The lower end of the collar is fixedly connected to three evenly distributed inclined side springs, one side of each inclined side spring is fixedly connected to a rubber layer, and the outer circumferential surface of the collar is threadedly connected to an internal threaded ring.

[0011] Furthermore, a connecting block is fixedly connected to the outer circumferential surface of the collar, and a shaft is rotatably connected between the connecting blocks. An ear block and a connecting block are fixedly connected to the outer circumferential surface of the shaft. A V-shaped spring is fixedly connected to one side of the ear block. One end of the V-shaped spring is fixed to the outer circumferential surface of the collar. An arc-shaped clamping block is fixedly connected to one end of the connecting block. A second rubber layer is fixedly connected to the inner wall of the arc-shaped clamping block. The second rubber layer is in close contact with the support rod.

[0012] Furthermore, a limiting groove is formed on the outer circumferential surface of the support rod, and a limiting block is fixedly connected to the inner wall of the collar, with the limiting block corresponding to the limiting groove.

[0013] Furthermore, a flat block is provided on the outer circumferential surface of the collar, and a screw is threaded onto the surface of the flat block. The burette butterfly clamp is fixedly mounted on the flat block of the collar by the screw.

[0014] Furthermore, the lower surface of the base is fitted with feet made of rubber material.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) When the height of the burette butterfly clamp needs to be adjusted, first rotate and loosen the internal thread ring. The loosened internal thread ring will move upward and no longer squeeze the inclined side springs. At this time, the rubber layer 1 is in a close contact with the support rod. The operator can hold the collar to control the burette butterfly clamp to move up and down. After the adjustment is completed, rotate and tighten the internal thread ring. The tightened internal thread ring will move upward and squeeze the three inclined side springs around the outer circumference of the support rod. The squeezed three inclined side springs, together with the rubber layer 1, will tightly clamp the support rod, which can greatly improve the stability of the burette butterfly clamp installation.

[0018] (2) When the operator holds the collar to control the up and down movement of the burette butterfly clamp, the thumb and forefinger press on one side of the lug, while the other four fingers press on the other side of the lug. The compressed lug will move closer to the collar, while the arc-shaped clamp at the other end will move away from the support rod. Only then can the operator truly move the collar up and down to adjust the height of the burette butterfly clamp. If the operator loses their grip, the pressure on the lug will disappear, and the V-shaped spring will cause the lug to quickly return to its original position. At the same time, the arc-shaped clamp, together with the rubber layer II, will quickly clamp the support rod, greatly increasing the frictional resistance and preventing the burette butterfly clamp from falling down rapidly, thus improving the safety of use and reducing safety hazards.

[0019] (3) The arc-shaped clamping block of this solution, together with the rubber layer 2, can temporarily limit the burette butterfly clamp. Afterwards, it is convenient for personnel to rotate the internal thread ring to lock it, without having to hold the burette butterfly clamp with the other hand at all times, making it convenient for personnel to operate and use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 This is a schematic diagram of the connection between the arc-shaped clamping block and the support rod of this utility model;

[0023] Figure 4 This is an enlarged structural diagram of the connection between the collar and the support rod of this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Base; 101. Support leg; 2. Support rod; 201. Limiting groove; 3. Collar; 301. Flat block; 302. Screw; 303. Limiting block; 4. Burette butterfly clamp; 5. Burette body; 6. Inclined side spring; 7. Rubber layer one; 8. Internal threaded ring; 9. Connecting block; 10. Shaft; 11. Ear block; 12. Connecting block; 13. Arc-shaped clamp; 14. Rubber layer two; 15. V-shaped spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] Example

[0028] like Figure 1-4As shown, a burette holder includes a base 1, a support rod 2 is fixedly connected to the upper end of the base 1, a collar 3 is sleeved on the outer circumference of the support rod 2, a burette butterfly clamp 4 is fixedly connected to the outer circumference of the collar 3, and one end of the burette butterfly clamp 4 holds the burette body 5.

[0029] The lower end of the collar 3 is fixedly connected to three evenly distributed inclined side springs 6. One side of the inclined side springs 6 is fixedly connected to a rubber layer 7. The outer circumferential surface of the collar 3 is threadedly connected to an internal threaded ring 8.

[0030] When adjusting the height of the burette butterfly clamp 4, first loosen the internal threaded ring 8 by rotating it. The loosened internal threaded ring 8 will move upward and will no longer press against the inclined side springs 6. At this time, the rubber layer 7 is in a close contact with the support rod 2. The operator can hold the collar 3 to control the up and down movement of the burette butterfly clamp 4. After adjustment, tighten the internal threaded ring 8 by rotating it. The tightened internal threaded ring 8 will move upward and press against the three inclined side springs 6 surrounding the outer circumference of the support rod 2. The three pressed inclined side springs 6, together with the rubber layer 7, will tightly clamp the support rod 2, which can greatly improve the stability of the burette butterfly clamp 4 installation.

[0031] like Figure 1-4 As shown, a connecting block 9 is fixedly connected to the outer circumferential surface of the collar 3. A shaft 10 is rotatably connected between the connecting blocks 9. An ear block 11 and a connecting block 12 are fixedly connected to the outer circumferential surface of the shaft 10. A V-shaped spring piece 15 is fixedly connected to one side of the ear block 11. One end of the V-shaped spring piece 15 is fixed to the outer circumferential surface of the collar 3. An arc-shaped clamping block 13 is fixedly connected to one end of the connecting block 12. A second rubber layer 14 is fixedly connected to the inner wall of the arc-shaped clamping block 13. The second rubber layer 14 is in close contact with the support rod 2.

[0032] When in use, the operator holds the collar 3 to control the up-and-down movement of the burette butterfly clamp 4. Specifically, the thumb and forefinger press down on one side of the lug 11, while the other four fingers press down on the other side of the lug 11. The compressed lug 11 will move closer to the collar 3, while the arc-shaped clamp 13 at the other end will move away from the support rod 2. Only then can the operator truly move the collar 3 up and down to adjust the height of the burette butterfly clamp 4. If the operator loses their grip, the pressure on the lug 11 will disappear, and the V-shaped spring 15 will cause the lug 11 to quickly return to its original position. At the same time, the arc-shaped clamp 13, together with the rubber layer 2 14, will quickly clamp the support rod 2, greatly increasing the frictional resistance and preventing the burette butterfly clamp 4 from falling down rapidly, thus improving safety and reducing safety hazards.

[0033] like Figure 4As shown, a limiting groove 201 is provided on the outer circumferential surface of the support rod 2, and a limiting block 303 is fixedly connected to the inner wall of the collar 3. The limiting block 303 corresponds to the limiting groove 201.

[0034] During use, to prevent the collar 3 from rotating on the support rod 2 during adjustment, which would hinder personnel from making height adjustments.

[0035] like Figure 2 As shown, a flat block 301 is provided on the outer circumferential surface of the collar 3, and a screw 302 is threadedly connected to the surface of the flat block 301. The burette butterfly clamp 4 is fixedly installed on the flat block 301 of the collar 3 by the screw 302.

[0036] When in use, the burette butterfly clamp 4 is not directly welded to the collar 3, but is fixed and installed by screw 302, which makes it easy to disassemble and replace when the burette butterfly clamp 4 is damaged.

[0037] like Figure 1 As shown, a support leg 101 is installed on the lower surface of the base 1, and the support leg 101 is made of rubber material.

[0038] When in use, the support legs 101 can improve the stability of the base 1 when placed on the table.

[0039] In summary, the specific working process of this solution is as follows: When the height of the burette butterfly clamp 4 needs to be adjusted, first rotate and loosen the internal thread ring 8. After loosening, the internal thread ring 8 will move upward and no longer squeeze the inclined side springs 6. At this time, the rubber layer 7 is in a close contact with the support rod 2. The operator can hold the collar 3 to control the burette butterfly clamp 4 to move up and down. After the adjustment is completed, rotate and tighten the internal thread ring 8. The rotated and tightened internal thread ring 8 will move upward. The upward-moving internal thread ring 8 will squeeze the three inclined side springs 6 around the outer circumference of the support rod 2. The squeezed three inclined side springs 6, together with the rubber layer 7, will tightly clamp the support rod 2, which can greatly improve the stability of the burette butterfly clamp 4 installation.

[0040] When the operator holds the collar 3 to control the up-and-down movement of the burette butterfly clamp 4, specifically, the thumb and forefinger press down on one side of the lug 11, while the other four fingers press down on the other side of the lug 11. The compressed lug 11 will move closer to the collar 3, while the arc-shaped clamp 13 at the other end will move away from the support rod 2. Only then can the operator truly move the collar 3 up and down to adjust the height of the burette butterfly clamp 4. If the operator loses their grip, the pressure on the lug 11 will disappear, and the V-shaped spring 15 will cause the lug 11 to quickly return to its original position. At the same time, the arc-shaped clamp 13, together with the rubber layer 2 14, will quickly clamp the support rod 2, greatly increasing the frictional resistance and preventing the burette butterfly clamp 4 from falling down rapidly, thus improving safety and reducing safety hazards.

[0041] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A burette support comprising a base (1), characterised in that: The upper end of the base (1) is fixedly connected with a support rod (2), the outer circumferential surface of the support rod (2) is sleeved with a collar (3), the outer circumferential surface of the collar (3) is fixedly connected with a burette butterfly clamp (4), one end of the burette butterfly clamp (4) clamps a burette main body (5); The lower end of the collar (3) is fixedly connected with three inclined side elastic sheets (6) which are uniformly distributed, one side of the inclined side elastic sheet (6) is fixedly connected with a rubber layer one (7), the outer circumferential surface of the collar (3) is threadedly connected with an internal thread ring (8).

2. A burette support according to claim 1, characterised in that: The outer circumferential surface of the collar (3) is fixedly connected with a connecting block (9), the shaft rod (10) is rotatably connected between the connecting blocks (9), the outer circumferential surface of the shaft rod (10) is fixedly connected with an ear block (11) and a connecting block (12), one side of the ear block (11) is fixedly connected with a V-shaped elastic sheet (15), one end of the V-shaped elastic sheet (15) is fixed with the outer circumferential surface of the collar (3), one end of the connecting block (12) is fixedly connected with an arc-shaped clamping block (13), the inner wall of the arc-shaped clamping block (13) is fixedly connected with a rubber layer two (14), the rubber layer two (14) is in close contact with the support rod (2).

3. A burette support according to claim 1, wherein: The outer circumferential surface of the support rod (2) is provided with a limiting sliding groove (201), the inner wall of the collar (3) is fixedly connected with a limiting block (303), the limiting block (303) corresponds to the limiting sliding groove (201).

4. A burette support according to claim 1, wherein: The outer circumferential surface of the collar (3) is provided with a plane block (301), the surface of the plane block (301) is threadedly connected with a screw (302), the burette butterfly clamp (4) is fixedly installed on the plane block (301) of the collar (3) through the screw (302).

5. A burette support according to claim 1, wherein: The lower surface of the base (1) is provided with a supporting leg (101), the supporting leg (101) is made of rubber material.

Images