Density detection auxiliary device

Abstract

The utility model discloses a density detection auxiliary device, including measuring main part, is used for accommodating liquid and object to be measured, overflow tray, the outer end of measuring main part is used for receiving overflowed liquid and is set, measuring cylinder, detachable installation is in the drainage end of overflow tray to measure the volume of overflowed liquid, cover, set in the upper measuring main part and movablely connected in the outside of overflow tray, buoyancy plate, set in the cover and insert measuring main part, the cover and overflow tray connect after making buoyancy plate rise to overflow port position under the buoyancy of liquid in the inside of measuring main part and fix. The auxiliary device can be according to the overflow tray and measuring cylinder of measuring main part outside, can directly obtain the volume of article according to the volume of overflowed water, the subsequent calculation of article density is convenient, and before actual operation, using the setting of buoyancy plate and cover, can guarantee the water level to be in overflow port position when guaranteeing the water injection to measuring main part, convenient article inserts in water and carries out operation.

Description

Technical Field

[0001] This utility model relates to the field of density detection technology, specifically to a density detection auxiliary device. Background Technology

[0002] In industrial production, scientific research experiments, and daily life, it is often necessary to test the density of irregularly shaped objects. As a key physical property of an object, the accuracy of its test results directly affects product quality assessment, material property analysis, and the reliability of experimental conclusions. Currently, the mainstream technical solution for density testing of irregularly shaped objects is the displacement method combined with the weighing method. Its core principle is based on Archimedes' principle: the object to be tested is completely submerged in water, and the volume of water displaced by the object is measured to determine the volume of the object. At the same time, the mass of the object is measured using a weighing device, and then the density of the object is obtained according to the density calculation formula (density = mass / volume).

[0003] In the existing process of density testing using the displacement method, there are two main methods for measuring the volume of an item, but both have obvious drawbacks: The first implementation method is the "overflow collection method": The container is first filled with water until the water level is level with the top of the container. The item to be tested is then slowly placed into the container. After the item is submerged, water is squeezed out. The overflowing water is collected in a collection container, and the volume of the collected water is measured to approximate the item's volume. However, this method has a significant technical bottleneck in practice: when filling the container with water, whether from the bottom or top, the water flow impact causes ripples on the liquid surface, making it impossible to guarantee a smooth rise to the top of the container. In reality, only "approximate filling" is achieved, resulting in an actual overflow volume less than the theoretical drainage volume. This leads to an underestimation of the item's volume, resulting in an overestimation of the density calculation.

[0004] The second implementation method is the "gradient container type": In order to solve the water filling problem of the "overflow collection type", relevant technicians proposed to use a container with external volume markings (similar to a graduated cylinder structure) for testing. During operation, it is not necessary to fill the container with water. Only the initial water level mark needs to be recorded first, and the final water level mark needs to be recorded after the item is put in. The volume of water displaced is calculated by the difference between the two marks. While this method avoids the operational limitation of "must be filled with water," new technical problems arise: to ensure that the item being tested is completely submerged and does not collide with the container wall, the inner diameter of the container must be larger than the maximum outer diameter of the item, resulting in a generally large container diameter. With a larger container diameter, the liquid level rise or fall of the same volume of water inside the container is extremely small. For example, for a container with a diameter of 20cm, displacing 10mL of water will only raise the liquid level by about 0.03cm. Such a small change in liquid level is difficult to accurately read with the naked eye, easily resulting in a large error in the scale reading. This leads to a large fluctuation range in the measured volume of the item, directly affecting the repeatability and accuracy of the density test results. This error problem is even more prominent for small, irregular items. Utility Model Content

[0005] Therefore, in order to overcome any of the above-mentioned shortcomings, this utility model provides a density detection auxiliary device. This auxiliary device uses an "overflow collection" method to detect volume by drainage. In actual use, a buoyancy plate is used to suppress the generation of water surface ripples during water injection, thereby ensuring that the liquid level is at the overflow port when water is injected. This solves the problem that the water overflows from the top due to water surface ripples during water injection, and if water injection stops, the liquid level will be lower than the overflow port, resulting in the measured volume being smaller than the actual volume.

[0006] This invention is implemented as follows: a density detection auxiliary device includes a measuring body for containing liquid and the object to be measured; An overflow tray is fitted onto the outer end of the measuring body to collect overflowing liquid. A graduated cylinder, detachably mounted on the drain end of the overflow pan to measure the volume of overflowing liquid; The cover is positioned above the measuring body and is movably connected to the outside of the overflow pan; A buoyancy plate is mounted on the cover and inserted into the measuring body, which can be raised and lowered. After the cover and overflow plate are connected, the buoyancy plate rises to the overflow port position under the buoyancy of the liquid inside the measuring body and is fixed.

[0007] Preferably, the bottom of the measuring body is provided with a liquid inlet pipe, and the bottom of the buoyancy plate is provided with a support base. When the buoyancy plate is inserted into the measuring body, the buoyancy plate is positioned above the liquid inlet pipe by the support base.

[0008] Preferably, the measuring body has an internal receiving groove, and an overflow hole is formed above the inner wall of the receiving groove. A flow channel is formed between the overflow plate and the outer wall of the measuring body, and the flow channel is located below the overflow hole.

[0009] Preferably, the external dimensions of the buoyancy plate are adapted to the dimensions of the receiving groove of the measuring body.

[0010] Preferably, the top of the overflow plate is not lower than the top of the measuring body, the bottom of the overflow plate is a slope, a drain hole is provided at the lowest point of the bottom of the overflow plate, a drain pipe corresponding to the drain hole is provided at the bottom of the overflow plate, and the measuring cylinder is movably installed on the drain pipe.

[0011] Preferably, the cover is threaded to the top outer end of the overflow plate, and a central hole is provided on the cover. A sliding rod passing through the central hole of the cover is provided on the top of the buoyancy plate.

[0012] Compared with the prior art, the present invention has the following advantages: First, this auxiliary device, through a liftable buoyancy plate installed within the measuring body, effectively suppresses water surface ripples during water injection, ensuring the liquid level in the container is precisely maintained at the overflow port. This avoids premature overflow due to water surface sloshing during injection and solves the problem of the liquid level falling back below the overflow port after water injection stops. Therefore, the water displaced when the test item is submerged can be completely collected through the overflow port, with the collected water volume being completely equivalent to the actual volume of the item. This fundamentally eliminates the core error of existing "overflow collection type" testing where the "measured volume is less than the actual volume," significantly improving the reliability of density testing results.

[0013] Secondly, this auxiliary device has an overflow plate at the outer end of the measuring body, which can be used to collect overflowing water stains. Combined with a measuring cylinder, the volume of overflowing water can be directly obtained, and thus the volume of the item can be directly obtained.

[0014] Furthermore, by setting the graduated cylinder to a movable connection, it is possible to replace graduated cylinders of different sizes and capacities according to the size of the item, so as to select an appropriate graduated cylinder to catch the overflow water, making it convenient for staff to observe the volume. At the same time, the water in the graduated cylinder can be directly drained after use, which is convenient for subsequent use. Also, if water overflows during the filling process, it can be drained directly to prevent it from flowing into the graduated cylinder and affecting subsequent volume detection.

[0015] Finally, by setting up a cover with movable connections, the buoyancy plate can be fixed during the water filling process, preventing the buoyancy plate from being higher than the overflow port and causing excessive water filling. At the same time, it can also prevent water surface ripples from causing the buoyancy plate to shake, which would still result in ripples affecting the water level. After the water filling is completed, the buoyancy plate can be removed to facilitate the subsequent placement of items for volume detection. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute any limitation on the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a frontal view of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model without the cover and buoyancy plate; Figure 4 This is a schematic diagram of the present invention with the cover and buoyancy plate removed and the measuring cylinder taken out. Figure 5 This is a schematic diagram of the structure of the cover and buoyancy plate of this utility model; In the diagram: 1. Measuring body; 2. Inlet pipe; 3. Overflow tray; 4. Cover; 5. Sliding rod; 6. Measuring cylinder; 7. Drain pipe; 8. Receiving tank; 9. Overflow hole; 10. Flow channel; 11. Drain hole; 12. Buoyancy plate; 13. Support base. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.

[0018] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] As described in the background section, when using the displacement method for density testing, conventional containers cannot guarantee that the water level is exactly at the overflow point when it is filled. If a graduated container is used to hold the item, the container diameter may be too large due to the size of the item, making it difficult to observe the depth when the water level rises, thus making it impossible to determine the volume.

[0020] For the reasons stated above, please refer to the appendix for solutions to these problems. Figure 1 and attached Figure 2This utility model provides a density detection auxiliary device, including a measuring body 1, which is used to contain liquid and the object to be measured; Overflow plate 3 is fitted onto the outer end of the measuring body 1 to collect overflowing liquid; Measuring cylinder 6 is detachably mounted on the drain end of overflow pan 3 to measure the volume of overflowing liquid; Cover 4 is positioned above the measuring body 1 and is movably connected to the outside of the overflow pan 3; The buoyancy plate 12 is raised and lowered and is installed on the cover 4 and inserted into the measuring body 1; After the cover 4 and the overflow plate 3 are connected, the buoyancy plate 12 rises to the overflow port position under the buoyancy of the liquid inside the measuring body 1 and is fixed.

[0021] In this embodiment, the bottom of the measuring body 1 is provided with a liquid inlet pipe 2, and the bottom of the buoyancy plate 12 is provided with a support base 13. When the buoyancy plate 12 is inserted into the measuring body 1, the buoyancy plate 12 is positioned above the liquid inlet pipe 2 by the support of the support base 13.

[0022] As mentioned above, the liquid inlet pipe is installed at the bottom of the measuring body to ensure that water is injected into the measuring body from below the buoyancy plate, thereby causing the buoyancy plate to rise. This avoids the problem of water being injected from above the buoyancy plate, which would affect its rise.

[0023] In this embodiment, to avoid the support base at the bottom of the buoyancy plate occupying the position of the internal liquid water, which would cause the water level to drop after the buoyancy plate is removed, the support base can be omitted. It is sufficient to ensure that the buoyancy plate is always above the water level during liquid injection (e.g., the liquid inlet pipe is set at the bottom end of the measuring body).

[0024] Please see the appendix Figure 3 In this embodiment, the measuring body 1 has an internal receiving groove 8, and an overflow hole 9 is also provided above the inner wall of the receiving groove 8. A flow channel 10 is formed between the overflow plate 3 and the outer wall of the measuring body 1, and the flow channel 10 is located below the overflow hole 9.

[0025] In this embodiment, the external dimensions of the buoyancy plate 12 are adapted to the dimensions of the receiving groove 8 of the measuring body 1.

[0026] In this embodiment, the top of the overflow plate 3 is not lower than the top of the measuring body 1, the bottom of the overflow plate 3 is a slope, and a drain hole 11 is provided at the lowest point of the bottom of the overflow plate 3. A drain pipe 7 corresponding to the drain hole 11 is provided at the bottom of the overflow plate 3, and the measuring cylinder 6 is movably installed on the drain pipe 7.

[0027] As mentioned above, the bottom of the overflow tray is sloped to facilitate the rapid discharge of overflowing water, which then flows into the measuring cylinder for direct volume observation.

[0028] Please refer to the appendix carefully. Figure 4 The drain pipe has an external thread on the outer side of its end, and the measuring cylinder has a matching internal thread.

[0029] Please see the appendix Figure 4 and attached Figure 5 In this embodiment, the cover 4 is threaded to the top outer end of the overflow plate 3, and a central hole is provided on the cover 4. A sliding rod 5 passing through the central hole of the cover 4 is provided on the top of the buoyancy plate 12.

[0030] In use, the auxiliary device is first connected to the cover 4 and the overflow plate 3. Water is then injected into the measuring body 1 through the liquid inlet pipe 2. During the water injection process, the water level rises, causing the buoyancy plate 12 to rise until it reaches the overflow hole 9. At this point, excess water can be discharged from the overflow hole 9. Then, the cover 4 is slowly rotated to raise the buoyancy plate 12 until the cover 4 and buoyancy plate 12 are removed. The liquid inlet pipe 2 is then closed to allow water to be injected into the body, keeping the water level at the overflow hole 9. A measuring cylinder 6 of appropriate size is then installed on the drain pipe 7. Finally, the item to be tested is slowly immersed in the water. As it is immersed, the water level rises and flows from the overflow hole 9 into the flow channel 10. The water then flows through the drain hole 11 and the drain pipe 7 into the measuring cylinder 6, allowing the volume of the item to be directly obtained. Combined with the mass of the item, the density can be calculated, thus realizing the density detection process of the item.

[0031] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A density detection auxiliary device, characterized in that: include, The measuring body is used to hold the liquid and the object to be measured. An overflow tray is fitted onto the outer end of the measuring body to collect overflowing liquid. A graduated cylinder, detachably mounted on the drain end of the overflow pan to measure the volume of overflowing liquid; The cover is positioned above the measuring body and is movably connected to the outside of the overflow pan; A buoyancy plate is mounted on the cover and inserted into the measuring body, which can be raised and lowered. After the cover and overflow plate are connected, the buoyancy plate rises to the overflow port position under the buoyancy of the liquid inside the measuring body and is fixed.

2. The density detection auxiliary device according to claim 1, characterized in that: The bottom of the measuring body is provided with a liquid inlet pipe, and the bottom of the buoyancy plate is provided with a support base. When the buoyancy plate is inserted into the measuring body, the buoyancy plate is positioned above the liquid inlet pipe by the support base.

3. The density detection auxiliary device according to claim 1, characterized in that: The measuring body has an internal receiving groove, and an overflow hole is also provided above the inner wall of the receiving groove. A flow channel is formed between the overflow plate and the outer wall of the measuring body, and the flow channel is located below the overflow hole.

4. The density detection auxiliary device according to claim 3, characterized in that: The external dimensions of the buoyancy plate are adapted to the dimensions of the receiving groove of the measuring body.

5. The density detection auxiliary device according to claim 3, characterized in that: The top of the overflow plate is not lower than the top of the measuring body, the bottom of the overflow plate is a slope, and a drain hole is provided at the lowest point of the bottom of the overflow plate. A drain pipe corresponding to the drain hole is provided at the bottom of the overflow plate, and the measuring cylinder is movably installed on the drain pipe.

6. The density detection auxiliary device according to claim 5, characterized in that: The cover is threaded to the top outer end of the overflow plate, and a central hole is provided on the cover. A sliding rod passing through the central hole of the cover is provided on the top of the buoyancy plate.

Images