Device for measuring rock density in field

Abstract

The utility model provides a device for measuring rock density in the field, and relates to the technical field of geological exploration. The device comprises a water container, a sample container, a weighing mechanism and a vacuumizing mechanism, the sample container is placed in the water container, an opening of the sample container can be opened for loading a rock sample and closed, an air extraction valve is mounted on the surface of the sample container, and the air extraction valve is connected with the weighing mechanism. The vacuumizing mechanism can vacuumize the interior of the sample container through the extraction valve, and the top of the sample container is connected with the weighing mechanism through a rope; the mass of the sample container before and after the rock sample is loaded and the tensile force generated on the weighing mechanism when the sample container is suspended in water can be weighed through the weighing mechanism. The device can be used for quickly and conveniently measuring the density of the rock in the field, and is convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of geological exploration, in particular to a device for measuring the density of rocks in the field. Background Art

[0002] The uranium-bearing rock series of sandstone-type uranium deposits in China is mainly continental sedimentary strata. The lithology of continental sedimentary rocks varies greatly vertically. The ores of sandstone-type uranium deposits range from fine sandstone to gravelly sandstone, and the differences in ore lithology result in different ore densities. Ore density is one of the important parameters for calculating engineering resource reserves.

[0003] The traditional method for measuring rock density is mainly the wax-sealing method. When measuring rock density, a large amount of paraffin needs to be heated and melted, and the rock sample block is tied with a thin wire and placed in the melted paraffin. After ensuring that the surface of the rock sample block is evenly covered with a paraffin film, it is placed in a container filled with water, and a balance is used to measure and record the mass before and after film coating and after immersion in water, and calculations are carried out in combination with the densities of paraffin and water.

[0004] Sandstone-type uranium deposits are often hosted in loose to relatively loose rocks. These loose to relatively loose rock sample blocks are prone to fragmentation, and there are no large intact rocks for tying with thin wires. At the same time, the field experimental environment is poor, and paraffin is likely to be mixed with impurities, affecting its density. Moreover, heating paraffin also requires a series of devices. It is impossible to quickly and accurately calculate the ore density in the field using the existing wax-sealing method.

[0005] In view of the above reasons, the utility model proposes a device for measuring the density of rocks in the field to meet the needs of geological workers, especially those engaged in the exploration of sandstone-type uranium deposits, to quickly and conveniently measure the ore density. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a device for measuring the density of rocks in the field, through which the density of rocks can be conveniently measured in the field.

[0007] The utility model provides a device for measuring the density of rocks in the field, including: a water-containing container, a sample container, a weighing mechanism, and a vacuum pumping mechanism. The sample container is placed inside the water-containing container. The opening of the sample container can be opened to load rock samples and closed. An air extraction valve is installed on the surface of the sample container. The vacuum pumping mechanism can evacuate the inside of the sample container through the air extraction valve. The top of the sample container is connected to the weighing mechanism by a string. Through the weighing mechanism, the mass of the sample container before and after loading rock samples and the pulling force generated on the weighing mechanism when in a suspended state in water can be weighed.

[0008] Preferably, the weighing mechanism is a hand-held electronic scale.

[0009] Preferably, the water container is a transparent glass container or a transparent plastic container, and the top of the water container is open.

[0010] Preferably, the sample container is a plastic bag.

[0011] Preferably, the opening of the plastic bag is closed and opened by the cooperation of a zipper or a concave-convex strip structure.

[0012] Preferably, when there is air inside the plastic bag, its bottom is circular.

[0013] Preferably, a hanging hole or a hook is provided at the top of the sample container.

[0014] Preferably, the string is a light yarn.

[0015] Preferably, the vacuum pumping mechanism is a vacuum pump.

[0016] Preferably, the vacuum pump is a manually push-pull vacuum pump or a portable electric vacuum pump.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] When measuring the density of a rock sample, the device does not require the rock to be tied with a thin line and immersed in a heated and melted paraffin solution. By placing the rock sample in the sample container, filling pure water in the water container, and cooperating the vacuum pumping mechanism with the air extraction valve on the surface of the sample container, the inside of the sample container can be evacuated. Through the weighing mechanism, the mass of the empty sample container, the mass when the empty sample container is immersed in pure water (i.e., the pulling force generated on the weighing mechanism), the mass of the sample container with the rock sample, and the mass when the plastic bag with the sample is immersed in pure water (i.e., the pulling force generated on the weighing mechanism) can be measured, so that the density of the rock can be quickly calculated, which can meet the actual needs of uranium ore geological workers in ore density calculation, is convenient to operate, and the measurement result is relatively accurate, and is convenient to use in the field environment. Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of the device of the present utility model;

[0021] Description of the reference numerals:

[0022] 1: Sample container; 2: Air extraction valve; 3: Zipper; 4: Hanging hole; 5: String; 6: Weighing mechanism; 7: Water container; 8: Vacuum extraction mechanism. Detailed implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Such as Figure 1As shown in the figure, the present utility model provides a device for measuring the density of rocks in the wild, including: a water container 7, a sample container 1, a weighing mechanism 6, and a vacuum pumping mechanism 8. The sample container 1 is placed inside the water container 7. The opening of the sample container 1 can be opened to load rock samples and closed. An air extraction valve 2 is installed on the surface of the sample container 1. The vacuum pumping mechanism 8 can extract vacuum from the inside of the sample container 1 through the air extraction valve 2. The top of the sample container 1 is connected to the weighing mechanism 6 through a cord 5. Through the weighing mechanism 6, the mass of the sample container 1 before and after loading rock samples and the pulling force generated on the weighing mechanism 6 when suspended in water can be measured.

[0027] Specifically, the water container 7 is a transparent glass container or a transparent plastic container, and the top of the water container 7 is open. In this embodiment, a transparent plastic container is selected, which is convenient to carry in the wild environment and is not easily broken compared with glass products. The transparent plastic container is cylindrical, and the top is a completely open structure, which is convenient to add water into it.

[0028] In this embodiment, the weighing mechanism 6 is a portable electronic scale, which is small in size and convenient to carry and use in the wild. The hook at the bottom of the weighing mechanism 6 is connected to the cord 5. The cord 5 is made of a lightweight yarn, and its top end is tied to the hook. A hanging hole 4 or a hook is provided at the top of the sample container 1 and is tied in cooperation with the cord 5.

[0029] In this embodiment, the sample container 1 is a plastic bag. The opening of the plastic bag is closed and opened through a zip 3. By pulling the zip 3, the two side edges of the opening are sealed or separated and opened in cooperation. In other embodiments, the opening can also be realized by using a matching concave-convex strip structure to open and close the opening. When there is air inside, the bottom of the plastic bag is circular, which can provide a certain buoyancy for it.

[0030] In this embodiment, the vacuum pumping mechanism 8 is a vacuum pump, which is a manual push-pull type vacuum pump or a portable electric vacuum pump, convenient for manual vacuum pumping or automatic vacuum pumping in the wild.

[0031] The working principle of the device of the present utility model is as follows:

[0032] When using the device to measure the density of rocks, first pull up the zip 3 of the plastic bag, use the vacuum pump to connect to the air extraction valve 2 of the plastic bag to extract vacuum from the plastic bag, and use the portable electronic scale to measure the mass of the plastic bag as m 1 , immerse the evacuated plastic bag in the water container 7 filled with pure water to make it suspended, and use the portable electronic scale to measure the mass of the plastic bag in water as m 2 ; take out the plastic bag, dry the water, load the ore sample, and then use the portable electronic scale to measure its mass as m 3 , then evacuate the plastic bag filled with rocks, immerse it in the container filled with pure water to make it suspended, and use the portable electronic scale to measure the mass of the plastic bag filled with ore in water as m4 The density of the ore is calculated according to the following formula:

[0033] ρ = ρ 水 ×(m 3 -m 1 ) / (m 2 +m 3 -m 1 -m 4 ),

[0034] where ρ 水 is the density of pure water, taken as 1.0×10 3 kg / m 3 ;

[0035] The principle is as follows:

[0036] According to the buoyancy calculation formula F 浮 = ρ 液 gV 排 , the volume of the plastic-sealed bag and the volume of the plastic-sealed bag containing the rock can be calculated. The difference between the two volumes is the volume of the rock, and the density of the rock is the mass of the rock divided by the volume.

[0037] (m 1 -m 2 )g = ρ 水 gV 塑

[0038] (m 3 -m 4 )g = ρ 水 gV 塑+岩

[0039] V 岩 = V 塑+岩 -V 塑 =[(m 3 -m 4 )g-(m 1 -m 2 )g] / ρ 水 g = (m 2 +m 3 -m 1 -m 4 ) / ρ 水

[0040] ρ 岩 = Rock mass / Rock volume = (m 3 -m 1 ) / V 岩

[0041] = ρ 水 ×(m 3 -m 1 ) / (m2 +m 3 -m 1 -m 4 );

[0042] Therefore, the m measured using the portable electronic scale 1 , m 2 , m 3 , m 4 are substituted into the above formula to calculate the density of the rock.

[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for measuring rock density in the field, characterized in that: include: A water container, a sample container, a weighing mechanism and a vacuum mechanism, wherein the sample container is placed inside the water container, the opening of the sample container can be opened to load a rock sample and can be closed, an air suction valve is installed on the surface of the sample container, and the vacuum mechanism can evacuate the inside of the sample container through the air suction valve, and the top of the sample container is connected to the weighing mechanism through a rope, and the weighing mechanism can weigh the mass of the sample container before and after the rock sample is loaded and the tension generated on the weighing mechanism when it is suspended in water.

2. The device for measuring rock density in the field according to claim 1, characterized in that: The weighing mechanism is a portable electronic scale.

3. The device for measuring rock density in the field according to claim 1, characterized in that: The water container is a transparent glass container or a transparent plastic container, and the top of the water container is open.

4. The device for measuring rock density in the field according to claim 1, characterized in that: The sample container is a plastic bag.

5. The device for measuring rock density in the field according to claim 4, characterized in that: The opening of the plastic bag is closed and opened by means of a zipper or a concave-convex strip structure.

6. The device for measuring rock density in the field according to claim 4, characterized in that: The bottom of the plastic bag is round when there is air inside.

7. The device for measuring rock density in the field according to claim 1, characterized in that: The top of the sample container is provided with a hanging hole or a hook.

8. The device for measuring rock density in the field according to claim 1, characterized in that: The cord is a lightweight yarn.

9. The device for measuring rock density in the field according to claim 1, characterized in that: The vacuum pumping mechanism is a vacuum pump.

10. The device for measuring rock density in the field according to claim 9, characterized in that: The vacuum pump is a manual push-pull vacuum pump or a portable electric vacuum pump.

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