Double-range densimeter for physics teaching

Abstract

The utility model discloses a double-range densimeter for physics teaching, which relates to the technical field of physics teaching equipment and comprises a large cylinder, a small cylinder, a double-range density scale sticker and a counterweight. The counter weight is adhered to the bottom of the small cylinder, the double-range density scale sticker is adhered to the outer wall of the small cylinder, water is filled in the large cylinder, and liquid to be measured is filled in the small cylinder. When the device is used for measuring the density of unknown liquid, the problem that a traditional densimeter is easy to break can be avoided, liquid with the density larger than or smaller than that of water can be measured, and the device can be used when the amount of liquid to be measured is small.

Description

Technical Field

[0001] This utility model relates to the field of physics teaching equipment technology, specifically a dual-range density meter for physics teaching. Background Technology

[0002] Traditional hydrometers used in middle school physics teaching have the following shortcomings: First, traditional hydrometers are made of glass and are easily broken; second, traditional hydrometers come in two specifications, "specific gravity meter" and "specific lightness meter," requiring different specifications of hydrometers to be used when measuring liquids with densities greater than and less than water; third, traditional hydrometers need to float in the liquid to be measured to take readings, making them unusable when the amount of liquid is small. Summary of the Invention

[0003] The purpose of this invention is to provide a dual-range density meter for physics teaching, which is not easily broken, has dual ranges, and can be used when the amount of liquid to be measured is small.

[0004] The purpose of this utility model is achieved through the following technical solution: a dual-range density meter for physics teaching, comprising a large cylinder, a small cylinder, a dual-range density scale sticker, and a counterweight; the counterweight is attached to the bottom of the small cylinder, the dual-range density scale sticker is attached to the outer wall of the small cylinder, the large cylinder is filled with water, and the small cylinder is filled with the liquid to be measured.

[0005] Preferably, the material of the large cylinder is transparent rigid plastic.

[0006] Preferably, the small tube is made of transparent rigid plastic.

[0007] Preferably, the main cylinder has a thickness of 2mm, a bottom inner diameter of 60mm, and a height of 120mm.

[0008] Preferably, the small cylinder has a thickness of 2mm, a bottom inner diameter of 30mm, and a height of 100mm.

[0009] Preferably, the counterweight consists of three circular magnets, each with a diameter of 25 mm and a thickness of 3 mm.

[0010] Preferably, the dual-range density scale sticker is made of transparent self-adhesive material, with a width of 20mm and a length of 90mm.

[0011] The beneficial effects of this invention are as follows: by using the above-mentioned device to measure the density of unknown liquids, the problem of traditional hydrometers being easily broken can be avoided; it can measure liquids with densities greater than and less than water; and it can also be used when the amount of liquid to be measured is small. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1. Large cylinder; 2. Small cylinder; 3. Dual-range density scale sticker; 4. Water; 5. Liquid to be tested; 6. Counterweight. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1 This utility model provides a technical solution: a dual-range density meter for physics teaching, including a large cylinder 1, a small cylinder 2, a dual-range density scale sticker 3, and a counterweight 6; the counterweight 6 is attached to the bottom of the small cylinder 2, the dual-range density scale sticker 3 is attached to the outer wall of the small cylinder 2, the large cylinder 1 is filled with water 4, and the small cylinder 2 is filled with the liquid to be tested 5.

[0016] The specific operation process of this utility model is as follows:

[0017] Example 1: When using the left scale of the dual-range density scale sticker 3, first put an appropriate amount of water 4 into the large cylinder 1, inject 5 mL of the liquid to be tested 5 into the small cylinder 2, and then put the small cylinder 2 into the large cylinder 1. When the small cylinder 2 is stable, read the scale corresponding to the right side of the water 4 liquid level and the dual-range density scale 3, which is the density of the liquid to be tested 5.

[0018] Example 2: When using the right scale of the dual-range density scale sticker 3, first put an appropriate amount of water 4 into the large cylinder 1, inject 10 mL of the liquid to be tested 5 into the small cylinder 2, and then put the small cylinder 2 into the large cylinder 1. When the small cylinder 2 is stable, read the scale corresponding to the left side of the dual-range density scale 3, which is the density of the liquid to be tested 5.

[0019] Although embodiments of the present invention have been shown and described, those skilled in the art will recognize that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-range density meter for physics teaching, characterized in that: It includes a large cylinder, a small cylinder, a dual-range density scale sticker, and a counterweight; the counterweight is attached to the bottom of the small cylinder, and the dual-range density scale sticker is attached to the outer wall of the small cylinder; the large cylinder is filled with water, and the small cylinder is filled with the liquid to be tested.

2. The dual-range density meter for physics teaching according to claim 1, characterized in that: The dual-range density scale sticker is made of transparent self-adhesive material, with a width of 20mm and a length of 90mm.

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