Bulk density sampling device

Abstract

The utility model provides a bulk density sampling device. The bulk density sampling device comprises a sampling barrel, an auxiliary upper cover and a sealing plate, the sampling barrel is in a cylindrical shape with an opening in the bottom, the auxiliary upper cover is installed on the top of the sampling barrel and detachably connected with the sampling barrel, the top of the auxiliary upper cover is connected with a downward-pressing bearing structure extending upwards, and the top of the auxiliary upper cover is provided with an air hole; the sealing plate is used for sealing the bottom opening of the sampling barrel after the sampling barrel finishes sampling. The bulk density sampling device is suitable for material piles under the natural stacking condition, interference of human factors can be reduced as much as possible in the sampling process, efficient and convenient sampling is achieved, and therefore the more accurate bulk density can be rapidly obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of potassium chloride, and particularly relates to a bulk density sampling device. Background Art

[0002] Potassium chloride (KCl) is an important salt chemical raw material and also an important intermediate for medicines and pesticides, occupying an important position in the national economy. With the rapid development of key industries such as medicine, pesticides, and chemical industry in China, the market demand for potassium chloride is continuously increasing.

[0003] In the actual production process of potassium chloride, there are semi-finished product piles of different natures in each production process, such as tail salt ore, surface carnallite ore in dry mining salt fields, low-grade refined potassium ore, and semi-finished bulk ore, etc. The determination of the pile quantity adopts the method of estimating by vehicle pulling, without accurate measurement, there is a large deviation from the actual stock, and it is not conducive to production process control. Therefore, it is necessary to accurately control the quantity of each pile. On the premise that the scanning imaging technology is mature at present, the volume measurement of the pile is relatively accurate, and the accuracy of the pile mass measurement completely depends on the bulk density of the pile. Therefore, it is necessary to measure the bulk density.

[0004] The prior art usually measures the bulk density through a standard funnel (or standard inclined plane), but the standard funnel is only applicable to granular materials with larger particle sizes, especially powder materials. Its stacking state is affected by factors such as the feeding speed, and there are many human factors introduced, which easily lead to poor accuracy of the measurement results and are not applicable to the measurement of the bulk density under natural stacking conditions. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a bulk density sampling device, which can improve the accuracy of the measurement results of the bulk density under natural stacking conditions.

[0006] To achieve the above purpose, the utility model provides a bulk density sampling device, which includes a sampling cylinder, an auxiliary upper cover, and a sealing plate. The sampling cylinder is a cylindrical shape with an open bottom. The auxiliary upper cover is installed on the top of the sampling cylinder and is detachably connected to the sampling cylinder. The top of the auxiliary upper cover is connected with a downward pressure bearing structure extending upward. The top of the auxiliary upper cover is provided with air holes, and the sealing plate is used to block the bottom opening of the sampling cylinder after the sampling cylinder completes sampling.

[0007] Furthermore, a connecting rod is fixedly arranged on the auxiliary upper cover, and the downward pressure bearing structure includes a downward pressure bearing piece, and the downward pressure bearing piece is arranged at the top end of the connecting rod.

[0008] Furthermore, a buoy is arranged at at least one air hole, and the buoy is configured to measure the sampling quantity of the sampling cylinder.

[0009] Further, the buoy includes an upper blade, a connecting rod, and a lower blade. The connecting rod passes through the ventilation hole. The upper blade is connected to the upper end of the connecting rod, and the lower blade is connected to the lower end of the connecting rod. The upper blade is located above the auxiliary upper cover, and the lower blade is located inside the auxiliary upper cover. A scale is provided on the connecting rod, and the scale is configured to indicate the floating position of the upper blade.

[0010] Further, the shape of the lower blade is adapted to the cross-sectional shape of the sampling cylinder.

[0011] Further, a buckle is provided on the side wall of the auxiliary upper cover, and a snap ring is provided on the outer side wall of the upper end of the sampling cylinder. The auxiliary upper cover is fixedly connected to the snap ring through the buckle.

[0012] Further, the lower end of the sampling cylinder is annular and provided with a magnet ring. The sealing plate is a magnetic component, and the sealing plate can be magnetically adsorbed and block the bottom opening of the sampling cylinder.

[0013] Further, a telescopic rod is laterally connected to the connecting rod. A handle is provided at the end of the telescopic rod away from the connecting rod, and an anti-slip sheet is provided on the surface of the handle.

[0014] Further, a magnet is provided at the tail of the handle. The sealing plate is a magnetic component and can be adsorbed on the magnet.

[0015] Further, a level is provided at the end of the telescopic rod close to the handle; and / or, the handle is of a concave structure.

[0016] Applying the technical solution of the present utility model, the bulk density sampling device includes a sampling cylinder, an auxiliary upper cover, and a sealing plate. The cylindrical bottom opening of the sampling cylinder can ensure that the sampling cylinder is completely embedded in the material pile from the bottom for loading; the auxiliary upper cover can provide assistance during the process of the sampling cylinder being embedded in the material pile for sampling; the setting of the downward pressure bearing structure facilitates applying pressure to the sampling cylinder with a hammer or other heavy objects through the downward pressure bearing structure when using the bulk density sampling device for sampling, so that the sampling cylinder can be completely embedded in the material pile; the setting of the ventilation hole can enable the sampling cylinder to discharge the internal air during the process of downward pressure sampling, so that the sampling cylinder can be smoothly embedded in the material pile to load samples; the sealing plate seals the sampling cylinder from the bottom of the sampling cylinder after sampling is completed, which can prevent the sample from falling and causing measurement errors. In addition, the sealing plate can also be used to scrape off the excess sample on the bottom surface of the sampling cylinder after sampling is completed. The sampling device of the present application samples by embedding the sampling cylinder in the material pile, overcomes the defects that the existing bulk density measurement method under natural stacking conditions is easily affected by factors such as the feeding speed and is prone to human factor interference, realizes efficient and convenient sampling, and ensures the accuracy of the sampling amount. Description of the Drawings

[0017] The attached drawings of the specification, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 A disassembled structural schematic diagram of the bulk density sampling device according to an embodiment of the present utility model is shown;

[0019] Figure 2 A three-dimensional structural schematic diagram of the auxiliary upper cover of the bulk density sampling device according to an embodiment of the present utility model is shown; and

[0020] Figure 3 A three-dimensional structural schematic diagram of the float of the bulk density sampling device according to an embodiment of the present utility model is shown.

[0021] Among them, the above-mentioned drawings include the following reference numerals:

[0022] 1. Sampling cylinder; 2. Magnet ring; 3. Snap ring; 4. Auxiliary upper cover; 5. Vent hole; 6. Lower pressing load-bearing piece; 7. Connecting rod; 8. Telescopic rod; 9. Hand grip; 10. Sealing plate; 11. Buckle; 12. Level gauge; 13. Float; 131. Upper blade; 132. Connecting rod; 133. Lower blade. Detailed implementation manners

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] As Figure 1 and Figure 2 shown, according to an embodiment of the present utility model, a bulk density sampling device includes a sampling cylinder 1, an auxiliary upper cover 4 and a sealing plate 10. Among them, the sampling cylinder 1 is a cylindrical shape with an open bottom; the auxiliary upper cover 4 is installed on the top of the sampling cylinder 1 and is detachably connected to the sampling cylinder 1; an upwardly extending lower pressing load-bearing structure is connected to the top of the auxiliary upper cover 4; a vent hole 5 is provided at the top of the auxiliary upper cover 4; the sealing plate 10 is used to block the bottom opening of the sampling cylinder 1 after the sampling cylinder 1 completes sampling.

[0025] In the above technical solution, the cylindrical bottom opening of the sampling cylinder 1 can ensure that the sampling cylinder 1 is completely embedded into the material pile from the bottom for loading; the auxiliary upper cover 4 can provide assistance during the process of the sampling cylinder 1 being embedded into the material pile for sampling; the setting of the downward pressure bearing structure facilitates applying pressure to the sampling cylinder 1 with a hammer or other heavy objects through this downward pressure bearing structure when using this bulk density sampling device for sampling, so that the sampling cylinder 1 can be completely embedded into the material pile; the setting of the air vent 5 can enable the sampling cylinder 1 to discharge the internal air during the process of downward pressure sampling, so that the sampling cylinder 1 can be smoothly embedded into the material pile to load samples; the sealing plate 10 seals the sampling cylinder 1 from the bottom of the sampling cylinder 1 after sampling is completed, achieving the effect of preventing the sample from falling and causing measurement errors. In addition, the sealing plate 10 can also be used to scrape off the excess sample on the bottom surface of the sampling cylinder 1 after sampling is completed. By embedding the sampling cylinder 1 into the material pile for sampling, it overcomes the defects that the existing bulk density measurement method under natural stacking conditions is easily affected by factors such as the feeding speed and is prone to human factor interference, realizes efficient and convenient sampling, and ensures the accuracy of the sampling quantity.

[0026] In one embodiment, the sampling cylinder 1 is made of hard plastic or metal material.

[0027] As Figure 1 and Figure 2 shown, according to an embodiment of the present invention, a connecting rod 7 is fixedly arranged on the auxiliary upper cover 4, and the downward pressure bearing structure includes a downward pressure bearing plate 6. The surface shape of the downward pressure bearing plate 6 is circular or square, and the downward pressure bearing plate 6 is arranged at the top end of the connecting rod 7.

[0028] In one embodiment, the downward pressure bearing plate 6 and the connecting rod 7 are fixedly connected by welding.

[0029] In another embodiment, a screw hole is arranged at the center position of the downward pressure bearing plate 6, a screw post extending vertically upward is arranged at the top of the connecting rod 7, the height of the screw post is the same as the thickness of the downward pressure bearing plate 6, and the downward pressure bearing plate 6 and the connecting rod 7 are detachably connected by threads.

[0030] In the above technical solution, the downward pressure bearing plate 6 arranged at the top end of the connecting rod 7 is in direct contact with the hammer or other heavy objects applying pressure during the process that the bulk density sampling device is pressured to enable the sampling cylinder 1 to be completely embedded into the material pile, bears the impact of the hammer or other heavy objects on the bulk density sampling device, and achieves the effect of protecting the sampling device and transmitting pressure to the sampling cylinder 1.

[0031] As Figure 1 and Figure 2 shown, according to an embodiment of the present invention, at least one floating buoy 13 is arranged at the air vent 5, and the floating buoy 13 is configured to measure the sampling quantity of the sampling cylinder 1.

[0032] As Figure 2 and Figure 3As shown in the figure, according to an embodiment of the present utility model, the buoy 13 includes an upper blade 131, a connecting rod 132, and a lower blade 133. The connecting rod 132 passes through the ventilation hole 5. The upper blade 131 is connected to the upper end of the connecting rod 132, and the lower blade 133 is connected to the lower end of the connecting rod 132. The upper blade 131 is located above the auxiliary upper cover 4, and the lower blade 133 is located inside the auxiliary upper cover 4. A scale is provided on the connecting rod 7, and the scale is configured to indicate the floating position of the upper blade 131.

[0033] In one embodiment, the upper blade 131 and the lower blade 133 are members made of lightweight thin plastic material.

[0034] In one embodiment, the shapes of the upper blade 131 and the lower blade 133 can be one of circular, square, or triangular. The upper blade 131 and the lower blade 133 can have the same shape or different shapes.

[0035] In one embodiment, the upper blade 131 is provided with a pointer or a triangular protrusion on the side pointing to the connecting rod 7 in the horizontal direction, so that the upper blade 131 is closer to the scale on the connecting rod 7, thereby more clearly and accurately indicating the current sampling amount during the sampling process.

[0036] In one embodiment, the surface area of the lower blade 133 is larger than that of the upper blade 131, or it can be the same as the surface area of the upper blade 131.

[0037] In one embodiment, the lower blade 133 is circular and has the same size as the internal cross-section of the sampling cylinder 1.

[0038] In one embodiment, the upper blade 131 and the connecting rod 132 can be fixedly connected by welding, or can be detachably connected, specifically by snap connection or threaded connection. In one embodiment, the lower blade 133 and the connecting rod 132 can be fixedly connected by welding, or can be detachably connected, specifically by snap connection or threaded connection.

[0039] In the above technical solution, when the sampling cylinder 1 is pressed down to embed the sampling cylinder 1 into the stockpile to load samples, the samples loaded into the sampling cylinder 1 will push the lower blade 133 upward along the direction pointed by the connecting rod 7. At the same time, since the upper blade 131 is connected to the lower blade 133 through the connecting rod 132, the upper blade 131 will generate the same displacement in the same direction as the lower blade 133. According to the scale indicated by the upper blade 131 on the connecting rod 7, the amount of samples taken by the sampling cylinder 1 can be known, and then it can be confirmed whether the sampling depth reaches the standard, so as to achieve accurate sampling and avoid problems such as insufficient sampling or excessive sampling.

[0040] Such as Figure 2 and Figure 3As shown, according to an embodiment of the present utility model, the shape of the lower blade 133 is adapted to the cross-sectional shape of the sampling cylinder 1, further expanding the contact area between the lower blade 133 and the sample, so as to more accurately reflect the sampling depth and reduce the measurement error.

[0041] As Figure 1 and Figure 2 shown, according to an embodiment of the present utility model, a buckle 11 is provided on the side wall of the auxiliary upper cover 4, and a snap ring 3 is provided on the outer side wall of the upper end of the sampling cylinder 1. The auxiliary upper cover 4 is detachably fixed to the snap ring 3 through the buckle 11.

[0042] In one embodiment, the buckle 11 is a member made of elastic plastic material.

[0043] In the above technical solution, the sampling cylinder 1 and the auxiliary upper cover 4 are detachably connected through the buckle 11 and the snap ring 3. On the one hand, it ensures that the sampling cylinder 1 and the auxiliary upper cover 4 can be repeatedly disassembled and assembled without damaging the structures of the sampling cylinder 1 and the auxiliary upper cover 4. On the other hand, it can achieve quick and convenient disassembly and assembly.

[0044] As Figure 1 shown, according to an embodiment of the present utility model, the lower end of the sampling cylinder 1 is annular and provided with a magnet ring 2, and the sealing plate 10 is a magnetic member. The sealing plate 10 can be magnetically adsorbed and block the bottom opening of the sampling cylinder 1.

[0045] In the above technical solution, an annular magnet ring 2 is arranged along the circumference of the lower end of the sampling cylinder 1, which can ensure that the sealing plate 10 is adsorbed as tightly as possible after sampling is completed, realize the sealing of the bottom of the sampling cylinder 1, and avoid the measurement error caused by the sample falling.

[0046] As Figure 1 shown, according to an embodiment of the present utility model, a telescopic rod 8 is laterally connected to the connecting rod 7. One end of the telescopic rod 8 far from the connecting rod 7 is provided with a handle 9, and an anti-slip sheet is arranged on the surface of the handle 9.

[0047] In the above technical solution, the telescopic rod 8 laterally connected to the connecting rod 7 can be extended to different lengths, avoiding people directly entering the material pile for sampling. At the same time, it is also convenient for sampling at different positions in the material pile, making the sampling device more convenient and flexible to operate. In addition, a handle 9 is arranged at one end of the telescopic rod 8 far from the connecting rod 7, improving the comfort and convenience of holding the sampling device. At the same time, the setting of the anti-slip sheet can reduce the occurrence of slipping during the holding process and further improve the holding stability.

[0048] In one embodiment, the surface of the handle 9 is not provided with an anti-slip sheet, but the surface is anti-slip treated to replace the anti-slip sheet to achieve the anti-slip effect. Specifically, methods such as frosting, dipping, or scribing groove textures can be used to increase the surface friction of the material.

[0049] As Figure 1 shown, according to an embodiment of the present utility model, a magnet is provided at the tail of the handshake 9, and the sealing plate 10 is a magnetic member and can be adsorbed on the magnet.

[0050] In the above technical solution, a magnet is provided at the tail of the handshake 9, which can provide a magnetic absorption and storage position for the sealing plate 10. When the sealing plate 10 is not used to adsorb and seal the bottom of the sampling cylinder 1, the sealing plate 10 is adsorbed on the magnet at the tail of the handshake 9 for storage, preventing the loss of the sealing plate 10 and causing inconvenience to sampling.

[0051] As Figure 1 shown, according to an embodiment of the present utility model, a spirit level 12 is provided at one end of the telescopic rod 8 close to the handshake 9; and / or, the handshake 9 is of an inner concave structure.

[0052] In the above technical solution, through the spirit level 12 provided at one end of the telescopic rod 8 close to the handshake 9, the levelness during the downward pressure of the sampling cylinder 1 can be intuitively shown during the sampling process, ensuring that the sampling cylinder 1 is not skewed during the process of being pressed into the stockpile for sampling; the handshake 9 with an inner concave structure can further fit the hand, improving the stability and comfort of holding the sampling device.

[0053] The working process of the bulk density sampling device of the present utility model is as follows: The auxiliary upper cover 4 is clamped and fixed to the sampling cylinder 1 through the buckle 11 provided on the side wall of the auxiliary upper cover 4 and the snap ring 3 provided on the outer side wall of the upper end of the sampling cylinder 1; Select a sampling area at random in the material pile, and apply pressure by hitting the downward pressure bearing piece 6 provided at the top of the connecting rod 7 with a hammer or other heavy objects. The pressure is transmitted to the sampling cylinder 1 through the connecting rod 7 connected to the downward pressure bearing piece 6 and the auxiliary upper cover 4, so that the sampling cylinder 1 is embedded in the sampling area of the material pile; During the process of hitting the downward pressure bearing piece 6 to embed the sampling cylinder 1 into the material pile, observe the scale indicated on the connecting rod 7 corresponding to the upper blade 131 above the auxiliary upper cover 4 to confirm whether the current sampling amount and sampling depth meet the standards; After confirming that the sampling cylinder 1 is embedded deep enough and a sufficient amount of samples are obtained, take out the sampling cylinder 1 from the material pile. Since the samples are squeezed inside the sampling cylinder 1 during downward pressure, the samples will not easily slide off when the sampling cylinder 1 is taken out. If the material is powdery, such as potassium chloride material, the samples will be more compact inside the sampling cylinder 1 and are less likely to slide off; Use the sealing plate 10 to scrape off the excess samples outside the sampling cylinder 1 to make the surface of the samples flat; The sealing plate 10 is tightly adsorbed to the bottom of the sampling cylinder 1 through the annular magnet ring 2 provided at the circumference of the lower end of the sampling cylinder 1 to block the opening at the bottom of the sampling cylinder 1; Transfer the sampling device to the sampling bag, remove the block at the bottom of the sampling cylinder 1, release the clamping and fixing between the auxiliary upper cover 4 and the sampling cylinder 1, and put all the samples in the sampling cylinder 1 into the sampling bag; Weigh the sampling bag with a balance and record the weighed mass; Repeat the above steps for different positions and different layers of the material pile, and measure the average mass by weighing multiple times; Calculate the bulk density ρ through the bulk density calculation formula, that is: ρ = m / v, where: m is the sample mass, v is the sample volume; The calculation formula for the sample volume v is: v = r 2 × π × h, where: r is the radius of the sampling cylinder 1, h is the height of the sampling cylinder 1.

[0054] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: The sampling cylinder is a cylindrical shape with an open bottom, ensuring that the sampling cylinder is fully embedded into the material pile from the bottom for loading; on the one hand, the auxiliary upper cover can provide assistance during the process of the sampling cylinder being embedded into the material pile for sampling, and on the other hand, it has a sealing effect on the sample loaded into the sampling cylinder. The detachable connection setting of the auxiliary upper cover facilitates taking out the sample from the sampling cylinder as completely as possible, reducing the residue in the sampling cylinder and minimizing the sample weighing error; the top of the auxiliary upper cover is connected with a downward pressure-bearing structure extending upward, so as to facilitate applying pressure to the sampling cylinder with a hammer or other heavy objects, enabling the sampling cylinder to be fully embedded into the material pile; the top of the auxiliary upper cover is provided with air vents to facilitate discharging the air inside the sampling cylinder during the process of pressing down the sampling cylinder, so that it can be smoothly embedded into the material pile to load the sample; the sealing plate is used to block the bottom opening of the sampling cylinder after the sampling cylinder has completed sampling, preventing sample leakage and resulting in measurement errors. In addition, the downward pressure-bearing piece arranged at the top of the connecting rod can withstand the impact of a hammer or other heavy objects on the bulk density sampling device, playing a role in protecting the sampling device and transmitting pressure to the sampling cylinder; the buoy arranged at the air vent can indicate the amount of sampling of the sampling cylinder, thereby confirming whether the sampling depth reaches the standard, so as to achieve accurate sampling and avoid problems such as insufficient sampling or excessive sampling; the telescopic rod can prevent people from directly entering the material pile for sampling, and at the same time is convenient for sampling at different positions of the material pile, making the sampling device more convenient and flexible to operate; the setting of the handgrip improves the comfort and convenience of holding the sampling device, and at the same time the setting of the anti-slip sheet can reduce the occurrence of slipping during the holding process, further improving the holding stability; the setting of the level gauge can visually display the levelness when the sampling cylinder is pressed down during the sampling process, ensuring that the sampling cylinder is not skewed during the process of being pressed and embedded into the material pile for sampling; the handgrip with an inner concave structure can further fit the hand, improving the stability and comfort of holding the sampling device and reducing the occurrence of situations such as slipping and dropping. Compared with measuring the bulk density through a standard funnel or a standard inclined plane in the prior art, a bulk density sampling device provided by the present utility model is more suitable for a material pile under natural stacking conditions, and can minimize the interference of human factors during the sampling process, realizing efficient and convenient sampling and thus quickly obtaining a more accurate bulk density.

[0055] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0057] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bulk density sampling device, characterized in that: The invention comprises a sampling tube (1), an auxiliary upper cover (4) and a sealing plate (10); the sampling tube (1) is cylindrical with an opening at the bottom; the auxiliary upper cover (4) is mounted on the top of the sampling tube (1) and is detachably connected to the sampling tube (1); the top of the auxiliary upper cover (4) is connected to a downward pressure bearing structure extending upward; a vent hole (5) is provided at the top of the auxiliary upper cover (4); and the sealing plate (10) is used to seal the bottom opening of the sampling tube (1) after the sampling tube (1) completes sampling.

2. The bulk density sampling device according to claim 1, characterized in that: A connecting rod (7) is fixedly arranged on the auxiliary upper cover (4), and the downward pressure bearing structure comprises a downward pressure bearing sheet (6), and the downward pressure bearing sheet (6) is arranged on the top end of the connecting rod (7).

3. The bulk density sampling device according to claim 2, characterized in that: A buoy (13) is provided at at least one of the air holes (5), and the buoy (13) is configured to measure the sampling volume of the sampling cylinder (1).

4. The bulk density sampling device according to claim 3, characterized in that: The buoy (13) comprises an upper blade (131), a connecting rod (132) and a lower blade (133), wherein the connecting rod (132) passes through the air vent (5), the upper blade (131) is connected to the upper end of the connecting rod (132), and the lower blade (133) is connected to the lower end of the connecting rod (132), the upper blade (131) is located above the auxiliary upper cover (4), and the lower blade (133) is located inside the auxiliary upper cover (4), and a scale is provided on the connecting rod (7), and the scale is constructed to indicate the floating position of the upper blade (131).

5. The bulk density sampling device according to claim 4, characterized in that: The shape of the lower blade (133) is adapted to the cross-sectional shape of the sampling tube (1).

6. The bulk density sampling device according to any one of claims 1 to 5, characterized in that: A buckle (11) is provided on the side wall of the auxiliary upper cover (4), a buckle ring (3) is provided on the outer side wall of the upper end of the sampling tube (1), and the auxiliary upper cover (4) is fixedly connected to the buckle ring (3) via the buckle (11).

7. The bulk density sampling device according to any one of claims 1 to 5, characterized in that: The lower end of the sampling tube (1) is annular and is provided with a magnet ring (2); the sealing plate (10) is a magnetic attraction member; the sealing plate (10) can be magnetically attracted and seal the bottom opening of the sampling tube (1).

8. The bulk density sampling device according to any one of claims 2 to 5, characterized in that: The connecting rod (7) is laterally connected to a telescopic rod (8), one end of the telescopic rod (8) away from the connecting rod (7) is provided with a handgrip (9), and the surface of the handgrip (9) is provided with an anti-slip sheet.

9. The bulk density sampling device according to claim 8, characterized in that: The tail of the handshake (9) is provided with a magnet, and the sealing plate (10) is a magnetic attraction member and can be adsorbed on the magnet.

10. The bulk density sampling device according to claim 8, characterized in that: A level (12) is provided at one end of the telescopic rod (8) close to the handle (9); and / or the handle (9) is a concave structure.

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