An aid for reading burette scales

Abstract

The utility model relates to a chemical experiment instrument field, specifically read the auxiliary device of burette scale, including the clamp, the inner wall between the clamp is provided with burette tube body, one side of the clamp top is provided with the auxiliary observation mechanism, the auxiliary observation mechanism includes the casing, the utility model discloses through the clamp and auxiliary observation mechanism, can make the experimental personnel in the use burette process, guarantee the standard of operation method and reading mode, avoid when using burette, appear the case of looking down and looking up burette scale, thereby avoid the error that appears after looking down and looking up burette scale, and then can improve the accuracy and standardization of experiment operation, can further reduce the labor intensity of the labor of the laboratory personnel, be favorable to the physical and mental health of practical personnel, improve the accuracy of reading, avoid the error of artificial reading, greatly reduce the random error and system error of measurement.

Description

Technical Field

[0001] This utility model relates to the field of chemical experimental instruments, specifically an auxiliary device for reading the scale of a burette. Background Technology

[0002] In chemical experiments, the correct use of measuring instruments is crucial to ensuring the accuracy and reliability of experimental results. Burettes and pipettes are both precision instruments, and strict rules must be followed in order to accurately measure liquids.

[0003] To improve the accuracy of measuring instruments, multiple aspects need to be addressed. However, existing burettes have issues with reading the scale. For example, reading the scale lines on the burette from above or below can lead to readings that are too high or too low. The main reason for this is the lack of standardized readings, which is the primary source of error. Human factors are the main cause, thus leading to errors when reading the scale of the burette. Utility Model Content

[0004] To address the shortcomings of existing technologies, current burettes often have issues with reading the scale. For example, reading the scale lines from above or below the burette can lead to readings that are too high or too low. The main reason for this is the lack of standardized readings, which is the primary source of error. Human factors are the main cause, resulting in errors when reading the scale of a burette. This invention proposes an auxiliary device for reading the scale of a burette.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an auxiliary device for reading the scale of a burette, including a clamp, a burette body is provided between the inner walls of the clamp, and an auxiliary observation mechanism is provided on one side of the top of the clamp;

[0006] The auxiliary observation mechanism includes a housing, the bottom of which is fixedly connected to one side of the top of the clamp, an eyepiece fixedly installed on the inner wall of the housing, an adjustment shaft rotatably connected to the inner wall of the housing, a reflector fixedly connected to the inner wall of the housing, and a magnifying glass fixedly connected to the inner wall of the housing.

[0007] Preferably, the inner wall of the clamp is provided with rollers, and the number of rollers is two, with the opposite side of the two rollers in close contact with the surface of the burette tube.

[0008] Preferably, a shaft is fixedly connected to both sides of the roller, and a damping bearing is fixedly sleeved on the surface of the shaft, and the surface of the damping bearing is fixedly connected to the inner wall of the clamp.

[0009] Preferably, a knob is rotatably connected to one side of the housing, and one end of the knob is fixedly connected to one end of the adjustment shaft.

[0010] Preferably, the inner wall of the clamp is provided with a rotating groove, and the inner cavity of the rotating groove is movably connected to the surface of the roller.

[0011] Preferably, the inner wall of the clamp is provided with four mounting grooves, and the inner cavity of the mounting groove is fixedly connected to the surface of the damping bearing.

[0012] Preferably, an auxiliary backlight is fixedly connected to one side of the top of the clip, and the auxiliary backlight is powered by an external battery.

[0013] Preferably, a limiting plate is rotatably connected to one side of the housing, and one side of the limiting plate contacts one side of the clamp.

[0014] Preferably, a rotating rod is fixedly connected to one side of the housing, and the surface of the rotating rod is rotatably connected to the inner wall of the limiting plate.

[0015] Preferably, a limiting rod is fixedly connected to one side of the clamp, and the surface of the limiting rod contacts the inner wall of the limiting plate.

[0016] The advantages of this utility model are:

[0017] This invention, through a clamp and auxiliary observation mechanism, ensures that laboratory personnel adhere to standardized operating methods and reading procedures when using the burette. It avoids errors caused by viewing the burette scale from above or below, thus improving the accuracy and standardization of experimental operations. Furthermore, it reduces the workload of laboratory personnel, benefiting their physical and mental health, and significantly reducing random and systematic measurement errors by eliminating human error. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a side perspective three-dimensional schematic diagram of the overall structure of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged view of the local structure at point A in the middle;

[0022] Figure 4 This is a top sectional view of the clip of this utility model;

[0023] Figure 5 This is a side sectional view of the housing of this utility model.

[0024] In the diagram: 1. Clip; 2. Auxiliary observation mechanism; 201. Housing; 202. Eyepiece; 203. Adjustment shaft; 204. Magnifying glass; 205. Reflector; 3. Burette body; 4. Auxiliary backlight; 5. Roller; 6. Rotating groove; 7. Damping bearing; 8. Mounting groove; 9. Shaft; 10. Knob; 11. Limiting plate; 12. Rotating rod; 13. Limiting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0027] This application discloses an auxiliary device for reading the scale of a burette. (Refer to...) Figures 1-5 An auxiliary device for reading the scale of a burette includes a clamp 1, a burette body 3 disposed between the inner walls of the clamp 1, and an auxiliary observation mechanism 2 disposed on one side of the top of the clamp 1.

[0028] The auxiliary observation mechanism 2 includes a housing 201, the bottom of which is fixedly connected to one side of the top of the clamp 1. An eyepiece 202 is fixedly installed on the inner wall of the housing 201. An adjustment shaft 203 is rotatably connected to the inner wall of the housing 201. A reflector 205 is fixedly connected to the inner wall of the housing 201. A magnifying glass 204 is fixedly connected to the inner wall of the housing 201.

[0029] Reference Figure 3 and Figure 4 The inner wall of the clamp 1 is provided with rollers 5. There are two rollers 5. The opposite side of the two rollers 5 is in close contact with the surface of the burette body 3. By setting the rollers 5, the rollers 5 can be manually moved under the action of the rollers 5, so that the clamp 1 can be moved up and down on the surface of the burette body 3. The position of the clamp 1 can be adjusted in a fine operation manner to accurately align the scale line.

[0030] Reference Figure 4 Both sides of the roller 5 are fixedly connected to shafts 9, and damping bearings 7 are fixedly sleeved on the surface of the shafts 9. The surface of the damping bearings 7 is fixedly connected to the inner wall of the clamp 1. By setting the shafts 9 and the damping bearings 7 in cooperation, the roller 5 can be made more stable when rotating. At the same time, it can prevent the roller 5 from slipping and moving due to the influence of the weight of the burette tube 3 itself, thereby avoiding affecting the accuracy of the burette tube 3 when observing the scale.

[0031] Reference Figure 2 A knob 10 is rotatably connected to one side of the housing 201. One end of the knob 10 is fixedly connected to one end of the adjustment shaft 203. By setting the knob 10, the user can easily rotate the adjustment shaft 203, thereby facilitating the use of the eyepiece 202. In addition, an angle scale can be installed on one side of the housing 201. The angle scale is used in conjunction with the knob 10. The initial calibration position of the angle scale is 0°, and the initial position of the angle scale is at the same horizontal level as the center line of the burette body 3.

[0032] Reference Figure 3 and Figure 4 The inner wall of the clamp 1 is provided with a rotating groove 6. The inner cavity of the rotating groove 6 is movably connected to the surface of the roller 5. By setting the rotating groove 6, the roller 5 can be provided with a trajectory under the action of the rotating groove 6, so as to avoid the roller 5 being unable to rotate and affecting the movement and adjustment of the burette tube 3.

[0033] Reference Figure 4 The inner wall of the clamp 1 is provided with four mounting slots 8. The inner cavity of the mounting slot 8 is fixedly connected to the surface of the damping bearing 7. By setting the mounting slots 8, the damping bearing 7 can be installed, so that the damping bearing 7 can be used normally.

[0034] Reference Figure 1 and Figure 2 An auxiliary backlight 4 is fixedly connected to one side of the top of the clip 1. The auxiliary backlight 4 is powered by an external battery. When the auxiliary backlight 4 is set up and the auxiliary light is close to the burette body 3, the light passes through the burette body 3 and shines on the magnifying glass 204, ensuring that the scale lines and liquid level are clearly visible.

[0035] Reference Figure 2 and Figure 3A limiting plate 11 is rotatably connected to one side of the housing 201, and one side of the limiting plate 11 contacts one side of the clamp 1. A rotating rod 12 is fixedly connected to one side of the housing 201, and the surface of the rotating rod 12 is rotatably connected to the inner wall of the limiting plate 11. A limiting rod 13 is fixedly connected to one side of the clamp 1, and the surface of the limiting rod 13 contacts the inner wall of the limiting plate 11. By setting the limiting plate 11, the rotating rod 12 and the limiting rod 13 in cooperation, the clamp 1 can be limited after closing, so as to prevent the closed clamp 1 from opening due to the influence of external force, thereby preventing the burette tube 3 held in the clamp 1 from falling off.

[0036] Working principle: In use, first place the burette body 3 into the clamp 1. The clamp 1, made of non-slip, elastic plastic, stably holds the burette body 3. The burette body 3 is clamped at the two openings of the clamp 1, allowing the roller 5 to hold it. To increase the stability of the clamp 1 after holding the burette body 3, the user rotates the limiting plate 11, causing it to rotate within the rotating rod 12. This engages the limiting plate 11 with the limiting rod 13, thus limiting the closed clamp 1. When needed... When moving the burette body 3 up and down, the clamp 1 is moved up and down on the surface of the burette body 3 by manually turning the roller 5. The position of the clamp 1 is adjusted in a fine-tuning manner to accurately align with the scale line. The main components of the housing 201 are a magnifying glass 204, a reflector 205, and an eyepiece 202. The magnifying glass 204 is directly facing the scale of the burette body 3 and is used to magnify the scale line and liquid level on the burette body 3. The reflector 205 is facing the magnifying glass 204 and reflects the light transmitted from the magnifying glass 204 vertically upward or forward. The light is projected at a certain angle, and the eyepiece 202 receives the light reflected from the reflector 205, displaying the scale lines and liquid level on the burette body 3. The reflector 205 on the eyepiece 202 has a rotatable adjustment shaft 203. Turning the knob 10 drives the adjustment shaft 203 to rotate, allowing adjustment of the light direction within a small range. This allows for accurate readings without bending over or lowering the head, making it convenient for laboratory technicians of different heights. The reflector 205 can be a plane mirror or a right-angle prism to change the path of the light. Additionally, the magnifying glass 204 and the reflector provide magnification. 205. The positions of the two are fixed. In order to improve the observation of the scale line in the burette body 3 when the light is poor, an auxiliary backlight 4 is set on one side of the burette body 3, close to the burette body 3. The light passes through the burette body 3 and shines on the magnifying glass 204 to ensure that the scale line and liquid level can be clearly seen. The auxiliary backlight 4 can be connected to the control switch. The control switch is a small push-button switch, which is set on the side of the clip 1 for easy operation. The auxiliary backlight 4 is powered by a battery, which can increase the convenience of using the auxiliary backlight 4.

[0037] It is worth noting that the auxiliary backlight 4 in this application can also be powered by other means, such as a button battery, which can be integrated into the clip 1, or it can support USB-C charging to improve portability. In addition, a miniature camera can be integrated into the eyepiece in this application to connect to a computer or other data acquisition device to automatically identify the liquid level scale, realize data recording and error analysis, improve the automation level of the equipment, and realize a digital terminal.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An auxiliary device for reading the scale of a burette, comprising a clamp (1), wherein a burette body (3) is disposed between the inner walls of the clamp (1), characterized in that: An auxiliary observation mechanism (2) is provided on one side of the top of the clamp (1); The auxiliary observation mechanism (2) includes a housing (201), the bottom of which is fixedly connected to one side of the top of the clamp (1), an eyepiece (202) is fixedly installed on the inner wall of the housing (201), an adjustment shaft (203) is rotatably connected to the inner wall of the housing (201), a reflector (205) is fixedly connected to the inner wall of the housing (201), and a magnifying glass (204) is fixedly connected to the inner wall of the housing (201).

2. The auxiliary device for reading the scale of a burette according to claim 1, characterized in that: The inner wall of the clamp (1) is provided with rollers (5), and there are two rollers (5). The opposite side of the two rollers (5) is in close contact with the surface of the burette tube body (3).

3. The auxiliary device for reading the scale of a burette according to claim 2, characterized in that: Both sides of the roller (5) are fixedly connected to shafts (9), and a damping bearing (7) is fixedly sleeved on the surface of the shaft (9). The surface of the damping bearing (7) is fixedly connected to the inner wall of the clamp (1).

4. The auxiliary device for reading the scale of a burette according to claim 1, characterized in that: A knob (10) is rotatably connected to one side of the housing (201), and one end of the knob (10) is fixedly connected to one end of the adjusting shaft (203).

5. The auxiliary device for reading the scale of a burette according to claim 1, characterized in that: The inner wall of the clamp (1) is provided with a rotating groove (6), and the inner cavity of the rotating groove (6) is movably connected to the surface of the roller (5).

6. The auxiliary device for reading the scale of a burette according to claim 1, characterized in that: The inner wall of the clamp (1) is provided with an installation groove (8), and there are four installation grooves (8). The inner cavity of the installation groove (8) is fixedly connected to the surface of the damping bearing (7).

7. The auxiliary device for reading the scale of a burette according to claim 1, characterized in that: An auxiliary backlight (4) is fixedly connected to one side of the top of the clip (1), and the auxiliary backlight (4) is powered by an external battery.

8. The auxiliary device for reading the scale of a burette according to claim 1, characterized in that: A limiting plate (11) is rotatably connected to one side of the housing (201), and one side of the limiting plate (11) contacts one side of the clamp (1).

9. The auxiliary device for reading the scale of a burette according to claim 1, characterized in that: A rotating rod (12) is fixedly connected to one side of the housing (201), and the surface of the rotating rod (12) is rotatably connected to the inner wall of the limiting plate (11).

10. An auxiliary device for reading the scale of a burette according to claim 1, characterized in that: A limiting rod (13) is fixedly connected to one side of the clamp (1), and the surface of the limiting rod (13) is in contact with the inner wall of the limiting plate (11).

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