High-precision refractometer

Abstract

The utility model discloses a high precision refractometer, concretely relates to refractometer technical field, including refractometer main part, the refractometer main part top is provided with gland and correction screw, the refractometer main part top is fixed with the grip, the grip one side close to correction screw is hinged with the protective cover, the protective cover covers the correction screw, the protective cover is fixed on the refractometer main part top, and the refractometer main part top is fixed on the refractometer main part top. A storage groove is formed in the side, close to the gland, of the protection cover, an insertion plate is arranged in the storage groove in a sliding mode, an insertion groove is formed in the side, close to the insertion plate, of the gland, the insertion plate is connected with the insertion groove in an inserted mode, and a shifting assembly is arranged at the top of the insertion plate. The refractometer main body is provided with the grip, so that the stability of holding the refractometer main body can be improved, the protective cover on the grip can play a role in protecting the outer side of the correction screw so as to prevent the correction screw from loosening when being collided to influence the detection precision, and meanwhile, the gland is fixed by the insertion plate on the protective cover and the insertion slot on the gland in an insertion manner, so that the detection precision is improved. And the influence on the liquid fixing effect caused by gland loosening is avoided.

Description

Technical Field

[0001] This utility model relates to the field of refractometer technology, and more specifically to a high-precision refractometer. Background Technology

[0002] A refractometer is an instrument that uses light to test the concentration of a liquid. It is used to determine refractive index, birefringence, optical properties, the refractive index of a liquid, the solute content in a solution, the sugar content of wine, the water content in a high-sugar solution, seawater salinity, and the specific gravity of battery electrolytes, etc. It is widely used in industries such as petrochemicals, light industry, food, pharmaceuticals, and environmental protection. When using a refractometer, the first step is to zero it using the calibration screw to improve accuracy. Then, the liquid sample is dropped into the measuring slot of the refractometer, and the measurement is taken through the prism assembly, etc.

[0003] For example, a high-efficiency refractometer with prior art publication number CN210803258U includes a prism base, a refracting prism mounted on the prism base, and a light-inlet plate hinged to the prism base and located above the refracting prism. A liquid inlet device is detachably connected to the refractometer body. The liquid inlet device includes a mounting bracket slidably mounted on the prism base, a flexible liquid inlet tube mounted in the middle of the mounting bracket, and a force-applying component mounted on the mounting bracket for squeezing the liquid inlet tube. After the mounting bracket is mounted on the prism base, the drain port of the liquid inlet tube faces the refracting prism. This allows the liquid to uniformly cover the observation surface between the light-inlet plate and the refracting prism, improving the accuracy of the detection results.

[0004] However, the existing technology described above still has the following problems in use: Since the refractometer surface lacks a limiting structure, it can accidentally detach from the hand during handheld use, causing damage. Furthermore, after adjusting the zeroing screw using tools, the screw is easily loosened by impact, which affects the accuracy of the test data. Therefore, this invention provides a high-precision refractometer. Utility Model Content

[0005] To overcome the aforementioned deficiencies in the prior art, this utility model provides a high-precision refractometer. By providing a handle on the main body of the refractometer, the stability of the handheld refractometer can be improved. The protective cover on the handle can protect the outside of the straightening screw, preventing the straightening screw from loosening when it is hit, thus affecting the detection accuracy. At the same time, the insert plate on the protective cover is inserted into the slot on the pressure cap to fix the pressure cap, preventing the pressure cap from loosening and affecting the fixation effect on the liquid, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision refractometer, comprising a refractometer body, a pressure cap and a straightening screw on the top of the refractometer body, a handle fixedly mounted on the top of the refractometer body, a protective cover hinged to the handle near the straightening screw, the protective cover covering the outside of the straightening screw, a storage groove on the protective cover near the pressure cap, an insert plate slidably mounted inside the storage groove, a slot on the pressure cap near the insert plate, the insert plate being inserted into the slot, and a toggle assembly on the top of the insert plate.

[0007] In a preferred embodiment, a pull strap is fixedly provided on the top of the protective cover, and a rubber pad is fixedly provided on the bottom of the protective cover. The rubber pad is made of soft material. When the protective cover is put on the correction screw, the rubber pad contacts the surface of the refractometer body and can play a buffering role.

[0008] In a preferred embodiment, the toggle assembly includes a lever fixed to the top of the insert plate, and the top of the protective cover has a movable groove communicating with the storage slot. The top end of the lever extends into the movable groove, and the lever allows the user to quickly adjust the position of the insert plate.

[0009] In a preferred embodiment, a baffle is hinged inside the movable slot, and a second pull strap is fixedly provided on the top of the baffle. With the second pull strap provided, the user can grab the second pull strap to facilitate the user to quickly flip the protective cover.

[0010] In a preferred embodiment, a plurality of protrusions are fixedly provided on the inner wall of the top of the grip. The plurality of protrusions are arranged in a linear array on the inner wall of the top of the grip, and the plurality of protrusions can make the surface of the grip uneven, thereby improving the stability when holding the grip.

[0011] In a preferred embodiment, a buckle is fixedly provided on the top of the protective cover, and a slot is provided on the side of the handle near the adjustment screw. The buckle engages with the slot. When the user flips the protective cover open, the buckle engages in the slot, which can connect the protective cover and the handle together and prevent the protective cover from closing automatically and affecting the adjustment of the adjustment screw.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model improves the stability of the handheld refractometer by setting a handle on the main body of the refractometer. The protective cover on the handle can protect the outside of the straightening screw to prevent the straightening screw from loosening when it is hit and affecting the detection accuracy. At the same time, the insert plate on the protective cover is inserted into the slot on the cover to fix the cover, preventing the cover from loosening and affecting the fixation effect on the liquid.

[0014] 2. By setting a lever on the protective cover, the user can quickly adjust the position of the plug plate by pushing the lever. At the same time, a baffle is set above the plug plate to protect it, so as to prevent the lever from being bumped or shaken and affecting the stability of the plug plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the protective cover of this utility model when opened;

[0017] Figure 3 for Figure 2 Rear view;

[0018] Figure 4 This is a schematic diagram of the grip and protective cover of this utility model;

[0019] Figure 5 This is a schematic diagram of the protective cover structure of this utility model.

[0020] The attached diagram is labeled as follows: 1. Refractometer body; 2. Cover; 3. Adjustment screw; 4. Handle; 5. Protective cover; 6. Storage slot; 7. Insert plate; 8. Slot; 9. Actuating assembly; 10. Pull strap one; 11. Rubber pad; 12. Protrusion; 13. Buckle; 14. Slot;

[0021] 901. Lever; 902. Moving slot; 903. Baffle; 904. Pull belt II. Detailed Implementation

[0022] 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 protection scope of the present utility model.

[0023] Refer to the instruction manual appendix Figures 1-5 This utility model provides a high-precision refractometer, including a refractometer body 1. The top of the refractometer body 1 is provided with a pressure cover 2 and a straightening screw 3. A handle 4 is fixedly provided on the top of the refractometer body 1. A protrusion 12 is fixedly provided on the inner wall of the top of the handle 4. There are multiple protrusions 12, which are arranged in a linear array on the inner wall of the top of the handle 4. The multiple protrusions 12 can make the surface of the handle 4 uneven, increase the friction, and thus improve the stability when holding the handle 4.

[0024] The handle 4 is hinged to a protective cover 5 near the straightening screw 3. The protective cover 5 covers the outside of the straightening screw 3. The protective cover 5 has a storage groove 6 near the pressure cap 2. An insert plate 7 is slidably installed inside the storage groove 6. The pressure cap 2 has a slot 8 near the insert plate 7. The insert plate 7 is inserted into the slot 8. The pressure cap 2 is fixed by the insert plate 7 to prevent the pressure cap 2 from shaking and affecting the stability of liquid fixation.

[0025] The top of the insert plate 7 is provided with a toggle assembly 9. Specifically, the toggle assembly 9 includes a lever 901 fixed to the top of the insert plate 7. The top of the protective cover 5 is provided with a movable groove 902 that communicates with the storage groove 6. The top end of the lever 901 extends into the movable groove 902. The lever 901 allows the user to quickly adjust the position of the insert plate 7. At the same time, a bolt is provided on the lever 901. After the position of the insert plate 7 is adjusted, the lever 901 is fixed to the protective cover 5 with the bolt, which can prevent the lever 901 from loosening and affecting the stability of the pressure cap 2.

[0026] In actual use, the user holds the refractometer body 1, first flips open the protective cover 5, and zeroes the instrument by turning the calibration screw 3 to ensure measurement accuracy. Then, the user drips the liquid to be tested onto the prism surface and closes the pressure cap 2. The pressure cap 2 flattens the liquid, ensuring it is evenly distributed on the prism surface and guaranteeing measurement accuracy. Afterward, the protective cover 5 is closed, and the lever 901 is pushed to insert the insertion plate 7 into the slot 8, limiting the pressure cap 2 to prevent it from loosening during the test and also avoiding the need for calibration. Screw 3 becomes loose due to impact, affecting the accuracy of the measurement. Then, the user holds the refractometer body 1 and aligns it with the light source, placing their eye on the eyepiece of the refractometer body 1. The light is refracted through the liquid prism onto the internal scale. There is a dividing line between the bright and dark areas on the scale, and the dividing line is the value to be measured. The user can also adjust the distance between the two convex lenses inside the refractometer body 1 through the back seat on the refractometer body 1 to find the best observation position, and then use their eye to observe the data on the scale through the convex lens inside the eyepiece.

[0027] In this embodiment, a pull strap 10 is fixedly provided on the top of the protective cover 5, and a rubber pad 11 is fixedly provided on the bottom of the protective cover 5. The rubber pad 11 is made of soft material. When the protective cover is put on the correction screw 3, the rubber pad 11 contacts the surface of the refractometer body 1 and can play a buffering role.

[0028] In this embodiment, a baffle 903 is hinged inside the movable slot 902. The baffle 903 can seal the movable slot 902 and prevent accidental contact with the lever 901 from affecting the stability of the insert plate 7. A pull strap 904 is fixedly provided on the top of the baffle 903. The pull strap 904 makes it easy for the user to quickly flip the protective cover 5.

[0029] The top of the protective cover 5 is fixedly provided with a buckle 13, and the handle 4 is provided with a slot 14 on the side near the straightening screw 3. The buckle 13 is engaged with the slot 14. When the user flips the protective cover 5 open, the buckle 13 is engaged in the slot 14, which can connect the protective cover 5 and the handle 4 together, and prevent the protective cover from closing automatically and affecting the adjustment of the straightening screw 3.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision refractometer, comprising a refractometer body (1), wherein the top of the refractometer body (1) is provided with a pressure cap (2) and a straightening screw (3), characterized in that: The refractometer body (1) is fixedly provided with a handle (4) on the top. A protective cover (5) is hinged to the handle (4) on the side near the straightening screw (3). The protective cover (5) covers the outside of the straightening screw (3). The protective cover (5) has a storage groove (6) on the side near the pressure cap (2), and a plug plate (7) is slidably provided inside the storage groove (6). The pressure cap (2) has a slot (8) on the side near the plug plate (7). The plug plate (7) is inserted into the slot (8), and a toggle component (9) is provided on the top of the plug plate (7).

2. The high-precision refractometer according to claim 1, characterized in that: The top of the protective cover (5) is fixedly provided with a pull strap (10), and the bottom of the protective cover (5) is fixedly provided with a rubber pad (11).

3. A high-precision refractometer according to claim 1, characterized in that: The actuation assembly (9) includes a lever (901) fixed to the top of the insert plate (7), and the top of the protective cover (5) is provided with a movable groove (902) that communicates with the storage groove (6), and the top end of the lever (901) extends into the movable groove (902).

4. A high-precision refractometer according to claim 3, characterized in that: The movable groove (902) is hinged to a baffle (903), and a pull strap (904) is fixedly provided on the top of the baffle (903).

5. A high-precision refractometer according to claim 1, characterized in that: The grip (4) has a protrusion (12) fixedly provided on the top inner wall. There are multiple protrusions (12), and the multiple protrusions (12) are distributed in a linear array on the top inner wall of the grip (4).

6. A high-precision refractometer according to claim 1, characterized in that: The top of the protective cover (5) is fixedly provided with a buckle (13), and the handle (4) is provided with a slot (14) on the side near the straightening screw (3), and the buckle (13) is engaged with the slot (14).

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