Coal mine overlying strata structure fracture water sample collection device

Abstract

The utility model provides a coal mine overlying strata structure fissure water sample collecting device, which belongs to the technical field of sample collection, and is characterized by comprising a filter barrel and a sampling barrel, the filter barrel is cylindrical, the upper part of the filter barrel is open, the bottom wall of the filter barrel is a filter screen, and the sampling barrel is arranged in the filter barrel. The sampling barrel is of a cylindrical structure with an opening in the upper portion, the bottom of the sampling barrel is of a one-way mechanism only allowing a water sample to enter in a one-way mode, and the filtering barrel is arranged on the outer wall of the sampling barrel in a sleeving mode and connected with the sampling barrel in a clamped mode; the one-way mechanism is of a cylindrical structure, is located on the circular through hole in the bottom of the sampling barrel, is close to the side wall of the sampling barrel, and is fixedly connected with the bottom wall of the sampling barrel; according to the utility model, a crack water sample can be filtered, impurities are reduced, and the sampling is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sample collection technical field, more particularly, relate to a coal mine overburden structure fissure water sample collection device. BACKGROUND

[0002] Coal mine overburden structure refers to the rock series located above the coal seam and covering the coal seam during the process of coal mining. These rock series are usually composed of multiple rock types, including sedimentary rocks, igneous rocks and metamorphic rocks, etc., with different physical and mechanical properties and chemical compositions. The stability and integrity of coal mine overburden structure are of great significance to the safety production and environmental protection of coal mines.

[0003] During the process of coal mining, due to the changes of ground stress and groundwater flow caused by mining activities, fissures often develop in the coal mine overburden structure. These fissures not only affect the mechanical properties of the rock, but also provide channels for the storage and transport of groundwater. Fissure water refers to the groundwater occurring in these fissures, which usually has different characteristics from pore water.

[0004] During the migration of fissure water, it interacts with the surrounding rock, dissolving or carrying minerals and trace elements in the rock, resulting in complex and variable water quality; the development degree and connectivity of fissures directly affect the storage capacity and flow rate of fissure water. During the process of mining, due to the changes of ground stress and the destruction of rock, the water quantity of fissure water may change significantly.

[0005] As an important part of groundwater, the dynamic change of fissure water can reflect the processes of groundwater recharge, runoff and discharge. Through sampling and monitoring, the dynamic change of groundwater can be understood in time, providing decision support for coal mine safety production and groundwater management. During the process of coal mining, the changes of ground stress and the destruction of rock will have an impact on the groundwater system. By sampling fissure water samples, the specific mechanisms and degrees of these impacts can be studied, providing scientific basis for environmental protection and groundwater management during the process of coal mining.

[0006] However, when sampling fissure water samples, due to the complexity of the storage and transport environment of fissure water, as well as various factors interfering during the sampling process, impurities often exist in the samples. These impurities may include suspended particulate matter, dissolved solids, colloidal substances, microorganisms, etc., which will affect the accuracy and representativeness of the samples. UTILITY MODEL CONTENT

[0007] Therefore, the utility model provides a coal mine overburden structure fissure water sample collection device, which can filter fissure water samples, reduce the existence of impurities and facilitate sampling.

[0008] The utility model is realized as follows:

[0009] The utility model provides a kind of coal mine overburden structure fissure water sample collection device, wherein, including filter bucket and sampling bucket, the filter bucket is cylindrical, the upper opening of the filter bucket, bottom wall is filter screen, the sampling bucket is the cylindrical structure of upper opening, the bottom of the sampling bucket only one-way mechanism that water sample unidirectionally enters, the filter bucket is sleeved on the outer wall of the sampling bucket, with the sampling bucket clamped together.

[0010] On the basis of the above technical solutions, the coal mine overburden structure fissure water sample collection device of the utility model can also be improved as follows:

[0011] Among them, the one-way mechanism is a cylindrical structure, located on the circular through hole at the bottom of the sampling bucket, close to the side wall of the sampling bucket, and the one-way mechanism is fixedly connected with the bottom wall of the sampling bucket.

[0012] The beneficial effects of the above improvement scheme are: by setting the one-way mechanism, it is convenient to replace when the one-way mechanism is damaged, and the replacement and use cost is saved.

[0013] Further, the one-way mechanism includes a fixed cylinder, which is a cylindrical structure. The fixed cylinder is divided into upper and lower parts. The inner diameter of the upper fixed cylinder is greater than the radius of the lower fixed cylinder. The contact between the lower fixed cylinder and the upper fixed cylinder is a circular platform. A one-way switch is provided on the circular platform.

[0014] Further, the one-way switch is a disc-shaped iron sheet. The one-way switch is fixed to the upper surface of the circular platform of the fixed cylinder through a rotating shaft and is rotatably connected with the circular platform.

[0015] The beneficial effects of the above improvement scheme are: by setting the disc-shaped iron sheet, the iron sheet rotates when water enters, which is convenient to use.

[0016] Further, the one-way switch is a disc-shaped structure wrapped with rubber. A control rod is provided on the top of the one-way switch. The control rod is a long rod shape. The bottom is fixedly connected with the top of the one-way switch. The side wall of the control rod is slidably connected with the inner side wall of the sampling bucket. The height of the control rod is equal to the height of the inner wall of the sampling bucket.

[0017] The beneficial effects of the above improvement scheme are:

[0018] Further, the control rod is a long rod structure, comprising a first control rod, a second control rod and a third control rod, the first control rod is in sliding connection with the inner side wall of the sampling barrel, the inner side wall of the sampling barrel is provided with a cylindrical protrusion, the inner diameter of the cylindrical protrusion is equal to the outer diameter of the first control rod, the first control rod and the third control rod are parallel, the second control rod is perpendicular to the first control rod and the third control rod, the bottom of the third control rod is fixedly connected with the top of the one-way switch, the bottom of the first control rod is fixedly connected with one side of the second control rod, and the top of the third control rod is fixedly connected with the other side of the second control rod.

[0019] Further, the filter screen of the bottom wall of the filter barrel is used for filtering impurities, and the hole diameter of the filter screen is smaller than the diameter of the impurities.

[0020] Further, the inner diameter of the filter barrel is equal to the outer diameter of the sampling barrel.

[0021] Further, the top of the sampling barrel is provided with an extension, the extension is a circular ring, and the outer diameter of the extension is greater than the outer diameter of the filter barrel.

[0022] Further, the inner wall of the sampling barrel is provided with a plurality of semicircular protrusions from top to bottom, the inner wall of the sampling barrel is provided with a plurality of semicircular recesses, and the positions of the protrusions and the recesses correspond to each other.

[0023] Compared with the prior art, the coal mine overburden structure fissure water sample collection device has the following beneficial effects:

[0024] By arranging the filter screen on the bottom wall of the filter barrel, impurities in the fissure water can be effectively filtered out, ensuring that the collected water sample is pure and meeting the needs of subsequent analysis and testing; the hole diameter of the filter screen is smaller than the diameter of the impurities, ensuring that the impurities are effectively blocked, while allowing water flow, thereby improving the sampling efficiency.

[0025] The one-way mechanism is arranged at the bottom of the sampling barrel, and only allows water sample to enter in one direction, thereby avoiding water sample backflow and pollution during sampling, and ensuring the representativeness of the sample; the one-way mechanism is designed as a replaceable structure, so that it is convenient to replace when damaged or blocked, thereby reducing the maintenance cost and use difficulty.

[0026] The one-way switch is in sliding connection with the inner wall of the sampling barrel through the control rod, so that the opening and closing of the one-way switch is more flexible and convenient to operate; the control rod is designed as a long rod structure, comprising a first control rod, a second control rod and a third control rod, thereby forming a stable triangular support structure, and enhancing the stability and durability of the one-way switch.

[0027] The filter barrel is sleeved on the outer wall of the sampling barrel and is clamped together with the sampling barrel, so that the sampling efficiency is improved.

[0028] The inner wall of the sampling barrel is provided with a plurality of semicircular protrusions and recesses from top to bottom, which helps to increase the contact area of the water flow with the inner wall of the sampling barrel, promotes the impurities in the water flow to be better captured by the filter screen, and reduces the turbulence and vortex of the water flow in the sampling barrel, reduces the risk of water sample agitation and pollution, and further improves the sampling quality.

[0029] In summary, the coal mine overburden structure fissure water sample collection device optimizes the structural design, improves the sampling efficiency, accuracy and stability, reduces the maintenance cost and use difficulty, and provides strong technical support for the sampling and analysis of the coal mine overburden structure fissure water. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0031] Figure 1 It is a schematic view of a coal mine overburden structure fissure water sample collection device;

[0032] Figure 2 It is a schematic view of a sampling barrel of a coal mine overburden structure fissure water sample collection device;

[0033] Figure 3 It is a schematic view of a first embodiment of a coal mine overburden structure fissure water sample collection device;

[0034] Figure 4 It is a schematic view of a second embodiment of a coal mine overburden structure fissure water sample collection device;

[0035] In the drawings, the component list represented by each reference numeral is as follows:

[0036] 1, filter barrel; 2, sampling barrel; 21, one-way mechanism; 211, fixed cylinder; 212, one-way switch; 2121, control rod. DETAILED DESCRIPTION

[0037] For the purpose, technical scheme and advantages of the utility model embodiment, the following will be combined with the drawings in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described.

[0038] As Figure 1 , Figure 2 , Figure 3 As shown in the utility model provides a kind of coal mine overburden structure fissure water sample collection device's first embodiment, in this embodiment, including filter bucket 1 and sampling bucket 2, filter bucket 1 is cylindrical, the upper opening of filter bucket 1, bottom wall is filter screen, sampling bucket 2 is the upper opening of cylindrical structure, the bottom of sampling bucket 2 only contains one-way mechanism 21 that water sample unidirectionally enters, filter bucket 1 is set on the outer wall of sampling bucket 2, and is clamped together with sampling bucket 2.

[0039] Among them, in the above technical scheme, one-way mechanism 21 is cylindrical structure, located on the bottom of sampling bucket 2 Circular through-hole, close to the side wall of sampling bucket 2, one-way mechanism 21 is fixedly connected with the bottom wall of sampling bucket 2.

[0040] Further, in the above technical scheme, one-way mechanism 21 includes fixed cylinder 211, fixed cylinder 211 is cylindrical structure, fixed cylinder 211 is divided into upper and lower two parts, the inner diameter of upper fixed cylinder 211 is greater than the radius of lower fixed cylinder 211, and the contact place of lower fixed cylinder 211 and upper fixed cylinder 211 is circular platform, and one-way switch 212 is arranged on the circular platform.

[0041] Further, in the above technical scheme, one-way switch 212 is disc-shaped iron sheet, and one-way switch 212 is fixed on the upper surface of the circular platform of fixed cylinder 211 by pivot and is rotatably connected with the circular platform.

[0042] Further, in the above technical scheme, the filter screen of the bottom wall of filter bucket 1 is used for filtering impurities, and the hole diameter of the filter screen is less than the diameter of the impurities.

[0043] Further, in the above technical scheme, the inner diameter of filter bucket 1 is equal to the outer diameter of sampling bucket 2.

[0044] Further, in the above technical scheme, the top of sampling bucket 2 is provided with an extension, the extension is circular ring, and the outer diameter of the extension is greater than the outer diameter of filter bucket 1.

[0045] Further, in the above technical scheme, the inner wall of sampling bucket 2 is provided with a plurality of semicircular protrusions from top to bottom, the inner wall of sampling bucket 2 is provided with a plurality of semicircular recesses, and the positions of the protrusions and the recesses correspond to each other.

[0046] As Figure 1 , Figure 2 , Figure 4The utility model provides a kind of coal mine overburden structure fissure water sample collection device's first embodiment shown in the utility model, in this embodiment, including filter bucket 1 and sampling bucket 2, filter bucket 1 is cylindrical, the upper opening of filter bucket 1, bottom wall is filter screen, sampling bucket 2 is the upper opening of cylindrical structure, the bottom of sampling bucket 2 only one-way mechanism 21 that water sample unidirectionally enters, filter bucket 1 is set on the outer wall of sampling bucket 2, and is clamped together with sampling bucket 2.

[0047] Wherein, in the above technical solution, one-way mechanism 21 is cylindrical structure, located on the bottom of sampling bucket 2 Circular through-hole, close to the side wall of sampling bucket 2, one-way mechanism 21 and the bottom wall of sampling bucket 2 are fixedly connected.

[0048] Further, in the above technical solution, one-way mechanism 21 includes fixed cylinder 211, fixed cylinder 211 is cylindrical structure, fixed cylinder 211 is divided into upper and lower two parts, the inner diameter of upper fixed cylinder 211 is greater than the radius of lower fixed cylinder 211, and the contact between lower fixed cylinder 211 and upper fixed cylinder 211 is circular platform, and one-way switch 212 is arranged on the circular platform.

[0049] Further, in the above technical solution, one-way switch 212 is disc-shaped structure wrapped with rubber outside, one-way switch 212 is provided with control rod 2121 on the top, control rod 2121 is long rod-shaped, and the bottom is fixedly connected with the top of one-way switch 212, the side wall of control rod 2121 is slidingly connected with the inner side wall of sampling bucket 2, and the height of control rod 2121 is equal to the height of the inner wall of sampling bucket 2.

[0050] Further, in the above technical solution, control rod 2121 is long rod-shaped structure, including first control rod, second control rod and third control rod, the first control rod is slidingly connected with the inner side wall of sampling bucket 2, the inner side wall of sampling bucket 2 is provided with cylindrical protrusion, the inner diameter of the cylindrical protrusion is equal to the outer diameter of the first control rod, the first control rod and the third control rod are parallel, the second control rod is perpendicular to the first control rod and the third control rod, the bottom of the third control rod is fixedly connected with the top of one-way switch 212, the bottom of the first control rod is fixedly connected with one side of the second control rod, and the top of the third control rod is fixedly connected with the other side of the second control rod.

[0051] Further, in the above technical solution, the filter screen of the bottom wall of filter bucket 1 is used for filtering impurities, and the hole diameter of the filter screen is smaller than the diameter of the impurities.

[0052] Further, in the above technical solution, the inner diameter of filter bucket 1 is equal to the outer diameter of sampling bucket 2.

[0053] Further, in the above technical solution, the top of sampling bucket 2 is provided with extension, the extension is circular ring, and the outer diameter of the extension is greater than the outer diameter of filter bucket 1.

[0054] Further, in the above technical solution, the inner wall of the sampling bucket 2 is provided with a plurality of semicircular protrusions from top to bottom, and the inner wall of the sampling bucket 2 is provided with a plurality of semicircular recesses, and the positions of the protrusions and the recesses correspond to each other.

[0055] Specifically, the principle of the utility model is: when sampling, the filter barrel 1 is placed in the sampling position, when there are enough water samples in the filter barrel 1, the sampling bucket 2 is put into the filter barrel 1, at this time, the water sample enters the sampling bucket 2 through the one-way mechanism 21, when enough water samples enter the sampling bucket 2, the sampling bucket 2 is lifted, the one-way mechanism 21 is a one-way communication mechanism, water cannot flow out of the sampling bucket 2 from the one-way mechanism 21, so that the sampling bucket 2 can retain enough water samples when being lifted.

Claims

1. A coal mine overburden structure fissure water sample collection device, characterized in that, The utility model provides a filter barrel (1) and sampling barrel (2) including, the filter barrel (1) is cylindrical, the upper opening of filter barrel (1), bottom wall is filter screen, the sampling barrel (2) is the upper opening cylindrical structure, the bottom of sampling barrel (2) only water sample one-way mechanism (21) of unidirectional entry, filter barrel (1) is set on the outer wall of sampling barrel (2), with sampling barrel (2) is clamped together.

2. The coal mine overburden structure fissure water sample collection device according to claim 1, characterized in that, The one-way mechanism (21) is a cylindrical structure located on the circular through hole of the bottom of the sampling barrel (2), close to the side wall of the sampling barrel (2), the one-way mechanism (21) is fixedly connected with the bottom wall of the sampling barrel (2).

3. The coal mine overburden structure fissure water sample collection device according to claim 2, characterized in that, The one-way mechanism (21) includes a fixed cylinder (211), the fixed cylinder (211) is a cylindrical structure, the fixed cylinder (211) is divided into upper and lower two parts, the inner diameter of the upper fixed cylinder (211) is greater than the radius of the lower fixed cylinder (211), the lower fixed cylinder (211) and the upper fixed cylinder (211) are in contact with the circular platform, the circular platform is provided with a one-way switch (212).

4. The coal mine overburden structure fissure water sample collection device according to claim 3, characterized in that, The one-way switch (212) is a disc-shaped iron sheet, the one-way switch (212) is fixed on the upper surface of the circular platform of the fixed cylinder (211) through the rotating shaft, and is in rotating connection with the circular platform.

5. The coal mine overburden structure fissure water sample collection device according to claim 4, characterized in that, The one-way switch (212) is a disc-shaped structure wrapped with rubber, the top of the one-way switch (212) is provided with a control rod (2121), the control rod (2121) is a long rod, the bottom is fixedly connected with the top of the one-way switch (212), the side wall of the control rod (2121) is in sliding connection with the inner side wall of the sampling barrel (2), and the height of the control rod (2121) is equal to the height of the inner wall of the sampling barrel (2).

6. The coal mine overburden structure fissure water sample collection device according to claim 5, characterized in that, The control rod (2121) is a long rod structure, including a first control rod, a second control rod and a third control rod, the first control rod is in sliding connection with the inner side wall of the sampling barrel (2), the inner side wall of the sampling barrel (2) is provided with a cylindrical protrusion, the inner diameter of the cylindrical protrusion is equal to the outer diameter of the first control rod, the first control rod and the third control rod are parallel, the second control rod is perpendicular to the first control rod and the third control rod, the bottom of the third control rod is fixedly connected with the top of the one-way switch (212), the bottom of the first control rod is fixedly connected with one side of the second control rod, and the top of the third control rod is fixedly connected with the other side of the second control rod.

7. The coal mine overburden structure fissure water sample collection device according to claim 6, characterized in that, The filter screen of the bottom wall of the filter barrel (1) is used for filtering impurities, and the hole diameter of the filter screen is smaller than the diameter of the impurities.

8. The coal mine overburden structure fissure water sample collection device according to claim 7, characterized in that, The inner diameter of the filter barrel (1) is equal to the outer diameter of the sampling barrel (2).

9. The coal mine overburden structure fissure water sample collection device according to claim 8, characterized in that, The top of the sampling barrel (2) is provided with an extension, the extension is a circular ring, and the outer diameter of the extension is greater than the outer diameter of the filter barrel (1).

10. The coal mine overburden structure fissure water sample collection device according to claim 9, characterized in that, The inner wall of the sampling barrel (2) is provided with a plurality of semicircular protrusions from top to bottom, and the inner wall of the sampling barrel (2) is provided with a plurality of semicircular recesses, and the positions of the protrusions and the recesses correspond to each other.

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