CN105181065A - Volume weighing machine - Google Patents

Abstract

The invention relates to the technical field of a volume weighing device used in engineering technology, environmental science and biology, in particular to a volume weighing device. It is characterized in that it includes a main body, the main body is provided with a mesh, the upper part of the main body is connected with a top cover through threads, and a rubber gasket is arranged at the connection between the main body and the top cover, and the top cover includes a tip of the top cover, and the tip of the top cover The bottom is provided with a protective screw platform, and the protective sleeve is connected with the protective screw platform through threads and sleeved outside the tip of the top cover. Its accuracy can reach 0.1mm ³ (1x10 ^-10 m ³ ), which can accurately, effectively and simply solve volume-related measurement problems in engineering or environment.

Description

a volumetric scale

technical field

The invention relates to the technical field of a volume weighing device used in engineering technology, environmental science and biology, in particular to a volume weighing device.

Background technique

In the fields of modern engineering technology, geological science, environmental science and life science, it is often necessary to measure the volume of certain parts, soil, rocks, or tissues and organs such as roots and leaves. When producing parts with special materials, especially for super expensive materials, in order to save money, it may be necessary to calculate the exact amount of the material required for the entire production plan in order to purchase reasonably. If the part is relatively regular, then the volume of the part can be easily calculated, and then the total purchase mass can be calculated according to the total number of parts produced, the volume of the part and the density of the special material, that is, the total purchase mass = total number of parts x part volume x Part material density. However, most of the volumes of parts are irregular and difficult to calculate and measure. In addition, some tests need to measure the density. For example, when you buy jewelry of various precious metals, how to distinguish whether it is adulterated or whether the purity is sufficient when you cannot destroy its shape. If you can measure the precise density of the jewelry, you can determine the Authenticity and value of jewellery. In the field of geological or environmental science, it is often necessary to quickly calculate the density of the same rock or different rocks from different origins, or the density of various soils, in order to understand their properties or further analysis and research. In the field of life sciences, it is sometimes necessary to measure the volume of plant roots or leaves for special experimental purposes. Moreover, damage to original components or materials due to testing is often unacceptable in practical situations.

At present, for various similar problems in these life, engineering or scientific research, it is mainly solved by drainage method or volume measurement method. The principle of the drainage method: fill a container with water, then put the object to be measured, wait for the water to overflow, then weigh the weight of the overflowed water, and then calculate the volume of the overflowed water with a water density of 1cm ³ /g, which is the volume of the object to be measured . However, with various existing containers on the market, it is difficult to accurately measure small-volume objects, such as rings or needles, by the drainage method, and the measurement accuracy is relatively poor. The principle of volume measurement method: use a graduated container such as a measuring cylinder, fill a certain amount of water, record the initial volume of water, then put the object to be measured, the water surface rises, record the final volume, and then calculate the difference between the final volume and the initial volume. The volume of the object to be measured. Similarly, with the existing various containers on the market, it is difficult for the volume measurement method to accurately measure small volume objects, such as the volume of a ring or a needle, and the measurement accuracy is worse than that of the drainage method. It can be seen that for the above-mentioned problems, there is no simple, accurate and easy solution at present.

Contents of the invention

The object of the present invention is to provide a volumetric scale aiming at the deficiencies of the prior art. Thereby effectively solving the problems in the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is: the described volume weighing device is characterized in that it comprises a main body, a mesh is arranged in the described main body, a top cover is threadedly connected to the main body, and the main body and A rubber gasket is provided at the joint of the top cover. The top cover includes a tip of the top cover, and a protective screw is provided at the bottom of the tip of the top cover.

The inner wall of the main body is provided with an annular groove, and the edge of the mesh is provided with an edge boss, and the edge boss is embedded in the annular groove.

The outer wall of the top cover is provided with a first marking arrow for marking the degree of spiral, and the outer wall of the main body is also provided with a second marking arrow corresponding to the first marking arrow.

The shapes of the main body and the top cover are correspondingly set to be cylindrical, conical, gourd-shaped or spherical.

The inner diameter of the tip of the top cover is 0.33-0.47mm.

The beneficial effects of the present invention are: the volume weighing device has an accuracy of up to 0.1mm ³ (1x10 ^-10 m ³ ), and can accurately, effectively and simply solve volume-related measurement problems in engineering or environment.

Description of drawings:

Fig. 1 is the overall structural schematic diagram of the present invention

Fig. 2 is a schematic diagram of the structure of the top cover of the present invention;

Fig. 3 is the principle schematic diagram of main body structure of the present invention;

Fig. 4 is the schematic diagram of the protective cover structure principle of the tip of the top cover of the present invention;

Fig. 5 is a structural schematic diagram of the working principle of the present invention.

As shown in the figure: 1. Top cover; 1-1. Tip of top cover; 1-2. Protective screw platform; 1-3. First mark arrow; 2. Rubber gasket; 3. Main body; 3-1. Groove; 3-2. Second mark arrow; 4. Mesh; 4-1. Edge boss; 5. Protective sleeve; 5-1. Thread.

Detailed ways

Below in conjunction with the best examples shown in the accompanying drawings for further details:

As shown in Figures 1 to 4, the described volumetric scale is characterized in that it includes a main body 3, a mesh 4 is arranged in the main body 3, and a top cover 1 is threaded on the upper part of the main body 3, and the main body 3 A rubber gasket 2 is provided at the connection with the top cover 1. The top cover 1 includes a top cover tip 1-1, and the bottom of the top cover tip 1-1 is provided with a protective screw platform 1-2, and the protective sleeve 5 passes through the thread 5- 1 is connected with the protective screw platform 1-2 and is sleeved outside the tip 1-1 of the top cover.

Further, the inner wall of the main body 3 is provided with an annular groove 3-1, and the edge of the mesh 4 is provided with an edge boss 4-1, and the edge boss 4-1 is embedded in the annular groove 3-1.

Further, the outer wall of the top cover 1 is provided with a first marking arrow 1-3 for marking the degree of spiral, and the outer wall of the main body 3 is also provided with a second marking arrow 3-2 corresponding to the first marking arrow 1-3.

Further, the shapes of the main body 3 and the top cover 1 are correspondingly set to be cylindrical, conical, gourd-shaped or spherical.

Further, the inner diameter of the top cap tip 1-1 is 0.33-0.47mm.

The working principle of the volume weighing device is as follows: as shown in Figure 5, the mass of container A is marked as M ₀ , the volume is marked as V ₀ ; the total mass of B is marked as M ₁ , and the mass of water is marked as As M _water , the density of water is recorded as ρ _water ; the total mass of C is recorded as M ₂ , the mass of the object is recorded as M _object , the volume of the object is recorded as V _object , and the density of the object is recorded as ρ _object , then:

M _water = ρ _water V ₀ ;

M ₁ = M ₀ + M _water = M ₀ + ρ _water V ₀ ;

M ₂ =M ₀ +M _water +M _matter =M ₀ +ρ _water (V ₀ -V _matter )+M _matter ;

So:

M ₂ -M1=[M ₀ +ρ _water (V ₀ -V _matter )+M _matter ]-[M ₀ +ρ _water V ₀ ]

＝M ₀ + _ρwater V _{0 -ρwater} V _substance +M _substance- M _{0 -ρwater} V ₀

=M _thing --rho _water V _thing ;

So:

ρ _water V _matter = M _matter + M ₁ -M ₂

So:

V _matter =(M _matter +M ₁ −M ₂ )/ _ρwater .

Among them, M _matter , M ₁ , and M ₂ can be weighed with an electronic balance of 1/10,000, and the value of ρ _water can be consulted according to the temperature during measurement, among which 0°C, 5°C, 10°C, 15°C, 20°C, 25°C The densities at 30°C are 0.99984g/cm ³ , 0.999965g/cm ³ , 0.999700g/cm ³ , 0.999099g/cm ³ , 0.998203g/cm ³ , 0.997044g/cm ³ and 0.995646g/cm ³ .

Since the accuracy of the electronic balance is 0.0001g, according to the formula V _matter = (M _matter + M ₁ -M ₂ )/ _ρwater , the calculation accuracy is 0.1 mm ³ . In addition, the inner diameter of the top cover tip (1-1) of the present invention is 0.33-0.47mm, if its liquid level error is within 0.5mm when weighing M1 and _M2 , then calculate according to the formula V= ^{πr 2} _h , where r is 0.165-0.235mm, and h is 0.5mm, then the error is 0.0427mm ³ -0.0867mm ³ , that is, the error is less than 0.1mm ³ .

This patent can also be used to calculate the density. If the density ρ of the _object is calculated, the calculation formula is as follows:

ρ _matter = M _matter /V _matter

=M _matter /((M _matter +M ₁ -M ₂ )/ _ρwater )

=M _matter ρ _water /(M _matter +M ₁ -M ₂ );

Among them, M _matter , M ₁ , and M ₂ can be weighed by an electronic balance of 1/10,000, and the value of ρ _water can be checked for its fixed value according to the temperature at the time of measurement.

When in use: Weigh the object to be measured and record it as M _object , and then put the object into the main body of the weighing device (if the object floats, use the mesh of the main body of the weighing device to ensure that the object to be weighed does not float up and affect the operation , if the object does not float, you can not use the main mesh of the weighing device), then fill the syringe with water and weigh the overall weight as _M2 ; then take out the object, fill it with water again and weigh the overall weight as M1; According to the water density at the corresponding temperature during measurement, the volume of the object can be calculated according to the formula V _matter = (M _matter + M ₁ -M ₂ )/ _ρwater .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (5)

1. A volume weighing device, characterized in that it comprises a main body, a mesh is arranged in the main body, a top cover is threaded on the top of the main body, a rubber gasket is arranged at the joint between the main body and the top cover, and the top cover The cover includes a tip of the top cover, a protective screw platform is arranged at the bottom of the tip of the top cover, and the protective sleeve is connected with the protective screw platform through threads and sleeved outside the tip of the top cover. 2. A volume weighing device as claimed in claim 1, characterized in that: the inner wall of the main body is provided with an annular groove, the edge of the mesh is provided with an edge boss, and the edge boss is embedded in the annular recess. groove. 3. A volume weighing device as claimed in claim 1, characterized in that: the outer wall of the top cover is provided with a first marking arrow for marking the degree of spiral, and the outer wall of the main body is also provided with a first marking arrow Corresponding to the second sign arrow. 4. A volume weighing device according to claim 1, characterized in that: the shapes of the main body and the top cover are correspondingly set to be cylindrical, conical, gourd-shaped or spherical. 5. A volume weighing device according to claim 1, characterized in that: the inner diameter of the tip of the top cover is 0.33-0.47mm.