A simple device for detecting true density of rock
Patent Information
- Application Number
- CN202522167218.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-13
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-13
AI Technical Summary
[0005]本实用新型提供了一种用于检测岩石真密度的简易装置,解决了检测岩石真密度结果准确、装置配备简易、部件不易损坏的问题
[0018] This application provides a simple device for detecting the true density of rocks, comprising a bottle and a stopper, which can effectively seal the bottle opening and prevent liquid loss. The volume of the simple device is unaffected by the measurement operation process, which helps guide operators to correctly determine the volume, reduces volume determination errors, and ensures the accuracy of the true density measurement of the rock being tested.
Smart Images

Figure CN224758297U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mineral testing technology, and in particular relates to a simple device for testing the true density of rocks. Background Technology
[0002] The true density of a rock refers to the mass per unit volume in an absolutely dense state, that is, the state in which the rock has no voids and is a completely solid substance.
[0003] The true density of rocks is usually determined using the hydrostatic bottle method. The basic procedure involves grinding the rock into a fine powder, placing it in a hydrostatic bottle containing solvent, heating and shaking the bottle to remove voids, then adding more solvent up to the neck of the bottle, measuring the change in total mass before and after adding the rock powder, and calculating the true density of the rock.
[0004] The existing technology has the following defects and shortcomings: When using this method to determine the true density of rocks, the specific gravity bottle needs to have a stopper that is perfectly matched to the bottle body. However, the specific gravity bottle uses a glass stopper, which is fragile. Once the stopper is broken or lost, it is difficult to find a suitable stopper to match the original specific gravity bottle body, resulting in an incomplete seal at the bottle opening and causing deviations in the measurement results. At the same time, the specific gravity bottle generally does not have volume graduations. When determining the volume, the operator needs to rely on subjective judgment to determine the position of the rock before and after adding it. This operation is prone to causing deviations in the determined volume. Utility Model Content
[0005] This invention provides a simple device for detecting the true density of rocks, which solves the problems of accurate results, simple device configuration, and easy component damage.
[0006] To achieve the above objectives, this application provides the following technical solution:
[0007] A simple device for detecting the true density of rocks includes: a bottle body with its opening facing upwards and a stopper that seals the opening, the stopper having a through hole and being made of rubber; the bottle body includes a cylindrical upper part and a lower part communicating with the upper part, the lower part being a bulging shape that is narrower at the top and wider at the bottom, and the bottom of the lower part being flat; the bottle body is made of transparent high borosilicate glass material.
[0008] Furthermore, in the simple device described above, the simple device is a measuring bottle, and the upper part is provided with graduation lines.
[0009] Furthermore, in the simple device described above, the stopper is a silicone stopper.
[0010] Furthermore, in the simple device described above, a hollow tube for venting air is provided in the through hole.
[0011] Furthermore, in the simple device described above, one end of the hollow tube is flush with the bottom surface of the bottle stopper, and the other end is higher than the top surface of the bottle stopper.
[0012] Furthermore, in the simplified device described above, the hollow tube is a cylindrical tube with an outer diameter ranging from 4 to 6 mm and an inner diameter ranging from 1 to 3 mm.
[0013] Furthermore, in the simple device described above, the hollow tube is a glass tube.
[0014] Furthermore, in the simple device described above, a filter screen is provided on the side of the through hole near the bottom of the bottle.
[0015] Furthermore, in the simple device described above, the stopper has a constricted opening from top to bottom.
[0016] Furthermore, in the simplified device described above, the scale marks indicate a volume of 50 ml or 100 ml.
[0017] The technical solution provided in this application has the following beneficial effects:
[0018] This application provides a simple device for detecting the true density of rocks, comprising a bottle and a stopper, which can effectively seal the bottle opening and prevent liquid loss. The volume of the simple device is unaffected by the measurement operation process, which helps guide operators to correctly determine the volume, reduces volume determination errors, and ensures the accuracy of the true density measurement of the rock being tested. Attached Figure Description
[0019] Figure 1 A schematic diagram of a simple device for detecting the true density of rocks provided in this application;
[0020] Explanation of the reference numerals: 1. Bottle body; 2. Bottle stopper; 3. Hollow tube; Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] See attached document Figure 1 This application provides a detailed description of a simple device for detecting the true density of rocks, as provided in the embodiments of this application. Figure 1 A schematic diagram of a simple device for detecting the true density of rocks provided in this application;
[0025] In short, the basic technical solution of this utility model is briefly described as follows:
[0026] A simple device for detecting the true density of rocks includes: an open bottle body and a stopper that seals the opening. The stopper has a through hole and is made of rubber. The bottle body includes a cylindrical upper part and a lower part that communicates with the upper part. The lower part is bulging in shape, narrower at the top and wider at the bottom, and has a flat bottom. The shape of the bottle body is conducive to a constant volume. The bottle body is made of transparent high borosilicate glass.
[0027] This application provides a simple device for detecting the true density of rocks, comprising a bottle and a stopper, which can effectively seal the bottle opening and prevent liquid loss. The volume of the simple device is unaffected by the measurement operation process, which helps guide operators to correctly determine the volume, reduces volume determination errors, and ensures the accuracy of the true density measurement of the rock being tested.
[0028] The following is a detailed description of a simple device provided in this application for detecting the true density of rocks.
[0029] like Figure 1As shown, a simple device for detecting the true density of rocks includes: an upward-opening bottle body and a stopper to seal the opening. The stopper's size matches the bottle mouth size, ensuring a complete and leak-proof seal. The stopper can be made of rubber (such as butyl rubber or silicone rubber), glass (ground joint), or polytetrafluoroethylene (PTFE). Preferably, the stopper is made of rubber, which has a certain degree of plasticity, is insoluble in water, has high heat resistance, low chemical temperature, and is non-flammable. More preferably, the stopper is made of silicone. The bottle body can be made of acid-resistant and high-temperature-resistant borosilicate glass, ordinary glass, or polytetrafluoroethylene (PTFE, plastic). Preferably, the bottle body is made of transparent high-borosilicate glass. The bottle body includes a cylindrical upper part and a lower part connected to the upper part, which can also be called the neck. The lower part is a bulging shape, narrower at the top and wider at the bottom, with a flat bottom. The shape of the bottle body is conducive to maintaining a constant volume.
[0030] The cross-sectional area of the upper part is much smaller than that of the lower part. In other words, the upper part has a narrow neck, precisely controlling the solution volume. This narrow neck design reduces the contact area between the solution and air inside the bottle, thus minimizing the loss of volatile solutes. Simultaneously, after inverting and shaking the solution, liquid adhering to the inner wall of the narrow neck flows back into the bottle more easily, reducing the impact of solution residue on concentration accuracy. The lower part is pear-shaped, a bulging shape that is narrower at the top and wider at the bottom, providing ample space for dissolution and mixing, and preventing liquid spillage during transfer (using a glass rod for guidance; the narrow neck allows for precise insertion of the glass rod, while the pear-shaped "wider at the bottom and narrower at the top" structure guides the liquid down the bottle wall, preventing splashing due to an excessively wide opening).
[0031] As some alternative embodiments of this application, the aforementioned simple device is a pear-shaped, flat-bottomed volumetric flask with a narrow neck. The flask has graduations indicating the final volume. The flat bottom ensures stability and facilitates observation of the liquid level. To minimize error, a single graduation line at the top indicates a volume of 50ml or 100ml. This single graduation is precisely calibrated at the factory to keep the error extremely low (the error of a Grade A volumetric flask is typically ≤0.1%, such as ≤0.10mL for a 100mL volumetric flask). The graduation line at the top facilitates observation of the liquid level, making it easier to align the graduation line with the lowest / highest point of the liquid level, reducing volume determination errors caused by "line of sight deviation" (if the graduation line were on the wider part of the flask, the liquid level would be too high, making it easy to misread the volume due to the viewing angle). The graduation line at the top also reduces the influence of temperature on volume and facilitates control of the liquid volume when adding liquid to the graduation line using a dropper, preventing "over-addition" due to the flask's wide diameter.
[0032] like Figure 1As shown, as some alternative embodiments of this application, the stopper of the measuring bottle has a constricted structure from top to bottom, and the cross-section of the constricted structure gradually decreases from top to bottom, which facilitates the sealing and fixing of the stopper and the bottle body, and also makes installation and disassembly easier. In one specific embodiment, the stopper of the measuring bottle is an inverted cone shape.
[0033] The stopper of the measuring flask has a through hole for installing a hollow tube to expel air. In one specific embodiment, the through hole is located at the center of the stopper, meaning the hollow tube passes through the center of the stopper. To facilitate air expulsion, one end of the hollow tube is flush with the bottom surface of the stopper, and the other end is above the top surface of the stopper, with the height above the top surface ranging from 2-4 cm, for example, 2, 2.5, 3, 3.5, or 4 cm. In one specific embodiment, the other end of the hollow tube is 3 cm above the top surface of the stopper. The hollow tube is cylindrical. In one specific embodiment, the hollow tube is a cylindrical tube with an outer diameter ranging from 4-6 mm, for example, 4, 5, or 6 mm, preferably 5 mm. The inner diameter of the cylindrical tube ranges from 1-3 mm, for example, 1, 2, or 3 mm, preferably 2 mm. In one specific embodiment, the hollow tube is a glass tube. When a liquid is heated, the liquid expands in the hollow tube, and the inner wall of the hollow tube can hold a portion of the liquid. When the tube cools down, the liquid can return to the volumetric flask without being lost.
[0034] As some alternative embodiments of this application, a filter screen is provided on the side of the through hole near the bottom of the bottle body to filter air and prevent liquid from splashing out when heated. The filter screen can replace the hollow tube mentioned in the above embodiments.
[0035] The measurement scope of the simple device provided in this application includes, but is not limited to, rocks. It can also involve other solids that are insoluble in water, do not react with water, and have a density greater than water, such as metal blocks, sand, ceramic blocks, and glass blocks. It is not applicable to absorbent materials, such as sponges and plaster, nor to objects with a density less than water, such as wood blocks and foam plastics.
[0036] To use, pour approximately 1 / 3 volume (about 30 ml) of distilled water into the bottle, then carefully pour in 15 g of the prepared rock sample to be tested. After sealing the bottle with the stopper with the hollow tube, thoroughly mix the rock sample with the distilled water, and heat the simple apparatus in a water bath for 1.5 hours. During the water bath heating process, allow the rock sample powder to boil fully to expel any residual air from the gaps in the rock sample. The gas will be expelled from the bottle through the hollow tube. After the simple apparatus heated in the water bath has cooled naturally to room temperature, pour distilled water to the 100 ml mark, tighten the stopper, shake the bottle several times to expel any remaining gas, and weigh it using a balance (M1).
[0037] Before the test, fill the bottle with distilled water to the 100ml mark, tighten the stopper, shake the bottle several times to remove residual gas, and weigh it with a balance M2. Calculate the volume of the rock to be tested using the density of water at room temperature and the weight difference before and after the test. According to the definition of true density, the true density of the rock to be tested is obtained by dividing the weight of the sample by its volume. Specifically, calculate the calculated true density d of the sample according to (1), and its value is expressed in g / cm³. 3 express:
[0038]
[0039] In the formula:
[0040] d—True density of the rock sample, in grams per cubic centimeter (g / cm³) 3 );
[0041] M—mass of the rock sample, in g;
[0042] M1—The combined weight of the simple apparatus, mineral sample, and distilled water, in grams (g);
[0043] M2 — The combined weight of the simple device and a full bottle of distilled water, expressed in g;
[0044] d s —The density of distilled water at room temperature, expressed in grams per cubic centimeter (g / cm³). 3 ).
[0045] This application provides a simple device for detecting the true density of rocks. It utilizes a bottle body and stopper instead of a specific gravity bottle, solving the problem of accidentally damaging the specific gravity bottle's stopper during routine testing, which prevents the detection of true density. Furthermore, by using a commonly used bottle body and stopper in a testing laboratory, it achieves the same functions of quantitative volume measurement and bottle mouth sealing. This eliminates the limitation of requiring a specific gravity bottle and stopper to be matched, thus preventing the detection of true density from being impossible if damaged or lost. This utility model is simple in design, easy to operate, and provides accurate results.
[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0047] For those skilled in the art, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. It is obvious that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, all embodiments are merely illustrative and not exhaustive, and should be considered exemplary and non-limiting. The scope of this invention is defined by the appended claims rather than the foregoing description, and therefore all changes falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims. All changes within the scope of this invention or its equivalents are included in this invention.
Claims
1. A simple device for detecting the true density of rocks, characterized in that, include: A bottle with an upward-facing opening and a stopper that seals the opening, wherein the stopper has a through hole and is made of rubber; The bottle body includes a cylindrical upper part and a lower part communicating with the upper part. The lower part is a bulging shape that is narrower at the top and wider at the bottom, and the bottom of the lower part is flat. The bottle body is made of transparent borosilicate glass.
2. The simplified device according to claim 1, characterized in that, The simple device is a measuring bottle, and the upper part is provided with graduation lines.
3. The simplified device according to claim 1, characterized in that, The bottle stopper is a silicone stopper.
4. The simplified device according to claim 1, characterized in that, A hollow tube for venting air is provided in the through hole.
5. The simplified device according to claim 4, characterized in that, One end of the hollow tube is flush with the bottom surface of the bottle stopper, and the other end is higher than the top surface of the bottle stopper.
6. The simplified device according to claim 4, characterized in that, The hollow tube is a cylindrical tube with an outer diameter ranging from 4 to 6 mm and an inner diameter ranging from 1 to 3 mm.
7. The simplified device according to claim 4, characterized in that, The hollow tube is a glass tube.
8. The simplified device according to claim 1, characterized in that, A filter screen is provided on the side of the through hole near the bottom of the bottle.
9. The simplified device according to claim 1, characterized in that, The bottle stopper has a constricted opening from top to bottom.
10. The simplified device according to claim 2, characterized in that, The graduations indicate a volume of 50 ml or 100 ml.