Sampling device

Abstract

The application provides a sampling device, comprising: a rotating rod; a sampling head connected with the rotating rod to drive the sampling head to rotate, the sampling head comprising a sampling cavity and a sampling port communicated with the sampling cavity; and a sample storage cylinder detachably installed in the sampling cavity, the sample storage cylinder having a feeding cylinder port arranged opposite to the sampling port, so that when the rotating rod drives the sampling head to extend into the soil, the soil enters the sample storage cylinder through the sampling port and the feeding cylinder port in sequence. The sampling device solves the problem that the soil taken by the sampling device in the prior art is easily mixed during transfer.

Description

TECHNICAL FIELD

[0001] The storage cylinder 4 is connected with the rotating rod 1 and the sampling head 2 to drive the sampling head 2 to rotate, and the sampling head 2 comprises a sampling cavity 3 and a sampling port 31 communicating with the sampling cavity 3; the sample storage cylinder 4 is detachably installed in the sampling cavity 3, and the sample storage cylinder 4 has a feeding cylinder port arranged opposite to the sampling port 31, so that the soil enters the sample storage cylinder 4 through the sampling port 31 and the feeding cylinder port in sequence when the rotating rod 1 drives the sampling head 2 to extend into the soil, and the sampling is completed. The soil sampling is carried out by using the sampling device, and the sample storage cylinder is preloaded into the sampling head, so that the sample mixing process is avoided once during sampling each time, and the sample storage cylinder is preloaded into the sampling head. Thus, the sample mixing process is avoided once during sampling each time, and the sample mixing process is avoided once during sampling each time. BACKGROUND

[0002] Coal-based soil treatment in coal mining areas is the focus of contaminated soil remediation in recent years. Before, during and after the treatment of coal-based soil, large-scale sampling is required for detection of various parameters, such as soil moisture determination, total nitrogen determination, soil permeability experiment, soil element content determination, soil particle size determination and other soil experiments. There are dozens of soil experiments, and these detections basically have corresponding national standards. Whether it is one experiment, it involves soil sample collection, processing and storage. The corresponding national standard for soil sample collection is NY / T1121.1-2006, which proposes different requirements for sample collection for different types of experiments.

[0003] The soil sample collector in the prior art includes two types of manual and automatic. The manual basically includes a connected sampling cylinder and a sampling rod, and the sampling rod is driven by hand to vertically insert the sampling cylinder into the ground for sampling. Obviously, the manual sampler is suitable for a small amount of sampling on the surface, otherwise it is time-consuming and labor-intensive. The automatic sampler is provided with a driving unit such as a diesel engine on the top of the sampling rod, and the sampling rod is driven by the engine and a transmission mechanism to rotate or vibrate at high speed to quickly insert the sampling cylinder into the soil.

[0004] Whether it is a manual or automatic sampling device, it is to insert a sampling head into the soil, then lift the sampling head to bring out the soil, then transfer the soil sample in the sampling head to a soil storage container according to the depth range, and finally to the laboratory for corresponding soil experiments. This has the disadvantage that the soil sample obtained in the laboratory is a mixture of soil samples in a specific depth range, and the soil sample has been mixed once during transfer, so that the sample at a specific position or a smaller range cannot be obtained. The prior art has a corresponding solution, that is, based on the experimental requirements, the soil is mixed once, which leads to the fact that the soil sampled each time cannot be used for other experiments, and the requirement for one-time mixing each time is high. SUMMARY

[0005] The main purpose of the present application is to provide a sampling device to solve the problem that the soil taken by the sampling device in the prior art is easily mixed when being transferred.

[0006] In order to achieve the above-mentioned purpose, the present application provides a sampling device, comprising: a rotating rod; a sampling head connected with the rotating rod to drive the sampling head to rotate, the sampling head comprising a sampling cavity and a sampling port communicating with the sampling cavity; and a sample storage cylinder which is detachably installed in the sampling cavity, the sample storage cylinder having a feeding cylinder port arranged opposite to the sampling port, so that when the rotating rod drives the sampling head to extend into the soil, the soil enters the sample storage cylinder through the sampling port and the feeding cylinder port in sequence.

[0007] Further, the sampling device further comprises: a blocking cover which blocks the cylinder port after the sample storage cylinder storing the soil is taken out of the sampling head; and / or a sampling driving component which is drivingly connected with the rotating rod to drive the rotating rod to rotate.

[0008] Further, the sampling port is arranged at the bottom of the sampling head; and / or the sample storage cylinder is provided with feeding cylinder ports at both ends, one of which is opposite to the sampling port when the sample storage cylinder is located in the sampling head; and the sampling device comprises two blocking covers which block the two feeding cylinder ports respectively after the sample storage cylinder storing the soil is taken out of the sampling head.

[0009] Further, the feeding cylinder port is arranged at the bottom end of the sample storage cylinder, and the top of the sample storage cylinder is provided with a breathable hole; and / or the sample storage cylinder is threadedly connected with the sampling head; and / or the sample storage cylinder is a plurality of sample storage cylinders which are all arranged in the sampling cavity.

[0010] Further, the sampling head comprises a plurality of plate body components which are arranged in sequence, and the positions between adjacent two plate body components are adjustably arranged to make the plurality of plate body components surround a cylinder structure, or at least two plate body components in the plurality of plate body components are arranged in overlap to form a taking and placing port for taking out or storing the sample storage cylinder.

[0011] Further, in the adjacent two plate body components, one plate body component is provided with a plug-in hole, and the other plate body component is movably arranged to be plugged into the plug-in hole; or the sampling head comprises a mounting ring, and each plate body component is movably mounted on the mounting ring along the mounting ring to surround the cylinder structure after the plurality of plate body components are sequentially spliced along the mounting ring.

[0012] Further, the sampling device further comprises: a limiting ring which is located at the sampling port to limit the sample storage cylinder in the sampling cavity, and the ring cavity of the limiting ring is arranged opposite to the sampling port and the feeding cylinder port.

[0013] Furthermore, the limiting ring is threadedly connected to the inner wall of the sampling head; and / or a limiting groove is formed between the limiting ring and the inner wall surface of the sampling head, and at least a part of the sample storage tube is limited in the limiting groove.

[0014] Furthermore, the sampling device also includes: an auxiliary unloading mechanism, at least part of which extends into the sampling cavity, and at least part of which is movably arranged to push the sample storage tube in the sampling cavity out of the sampling port.

[0015] Furthermore, the auxiliary unloading mechanism includes: a unloading rod and a unloading tray, and the unloading tray is movably arranged in the sampling cavity along the material taking direction of the sampling cavity; one end of the unloading rod is located in the sampling cavity and connected to the unloading tray, and the other end of the unloading rod is located outside the sampling cavity, so that the unloading tray is pushed to move by the unloading rod to push out the sample storage tube.

[0016] Furthermore, the auxiliary unloading mechanism also includes: a limiting ring and an extension rod, one end of the extension rod is connected to the unloading tray, and the other end of the extension rod is connected to the limiting ring, and a storage space for accommodating the sample storage tube is formed between the limiting ring and the unloading tray.

[0017] Furthermore, the extension rod is clamped with the limiting ring, or the extension rod and the limiting ring are integrally formed; and / or there are multiple extension rods, and the multiple extension rods are arranged at intervals along the circumference of the limiting ring; and / or the extension rod is arranged parallel to the rotating rod; and / or an axial groove is provided on the inner wall of the sampling head, and at least a portion of the extension rod is located in the axial groove.

[0018] Furthermore, there are multiple unloading rods, which are arranged at intervals along a predetermined direction; the top of the sampling head is provided with multiple penetration holes, and the multiple unloading rods are arranged in one-to-one correspondence with the multiple penetration holes, and each unloading rod is penetrated in the corresponding penetration hole.

[0019] Furthermore, a through hole is provided on the top of the sampling head, which is a strip-shaped hole. The discharge rod is passed through the through hole and is movably arranged in the through hole. The extension rod is rotatably connected to the discharge tray to drive the discharge tray to move by swinging the discharge rod.

[0020] Furthermore, a rotating hole is provided on the discharge tray, a rotating component is provided on the extension rod, at least part of the rotating component is located in the rotating hole, and the contact surface between the rotating component and the rotating hole is at least part of a spherical surface.

[0021] Furthermore, a mounting notch is provided on the rotating component, a hard contact platform is provided on the top of the sample storage tube, and the mounting notch is clamped at the edge of the hard contact platform.

[0022] Furthermore, the sampling head includes a main shell and a closing plate. A discharge port is provided on a side wall of the main shell. The position of the closing plate is adjustable to open or close the discharge port.

[0023] Furthermore, the sampling device also includes: an auxiliary unloading mechanism, the auxiliary unloading mechanism includes a unloading rod, a unloading tray and an extension rod, the unloading tray is located in the sampling cavity, the unloading rod is passed through the sampling cavity, the unloading rod is connected to the unloading tray, and the extension rod is located in the sampling cavity and connected to the unloading tray; wherein, the closing plate is installed on the extension rod to move with the extension rod to the position of opening or closing the unloading port.

[0024] Furthermore, a first protrusion and a second protrusion are provided on the extension rod, and the first protrusion and the second protrusion are arranged at intervals along the extension direction of the extension rod; a protrusion ring is provided on the closing plate, and the protrusion ring is sleeved on the extension rod and limited between the first protrusion and the second protrusion.

[0025] Furthermore, the first protrusion is located above the second protrusion, and a wedge-shaped extrusion surface is provided on the second protrusion. The inner wall surface of the protrusion ring has a mating surface that matches the wedge-shaped extrusion surface. The wedge-shaped extrusion surface is inclined to the axis of the extension rod so that the closing plate moves in a direction perpendicular to the extension rod through the cooperation between the wedge-shaped extrusion surface and the mating surface.

[0026] Applying the technical solution of the present invention, the sampling device of the present invention includes a rotating rod, a sampling head and a sample storage tube. The rotating rod is connected to the sampling head to drive the sampling head to rotate. The sampling head includes a sampling cavity and a sampling port connected to the sampling cavity; the sample storage tube is detachably installed in the sampling cavity, and the sample storage tube has a feeding tube opening arranged opposite to the sampling port, so that when the rotating rod drives the sampling head to extend into the soil, the soil passes through the sampling port and the feeding tube opening in turn into the sample storage tube, thereby completing the sampling. The sampling device is used to sample the soil, and the sample storage tube is pre-installed in the sampling head. This not only avoids the sample mixing process each time sampling is performed, but also enables unmixed samples of the original depth range to be obtained during the experiment, which is convenient for use in different experiments and solves the problem that the soil taken by the sampling device in the prior art is easily mixed during transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It shows a schematic structural diagram of a first embodiment of a sampling device according to the present invention;

[0029] Figure 2 A schematic structural diagram of a second embodiment of a sampling device according to the present invention is shown;

[0030] Figure 3 A schematic structural diagram of a sampling head of a sampling device of the present invention is shown;

[0031] Figure 4 A schematic structural diagram of the auxiliary unloading mechanism of the sampling device of the present invention is shown;

[0032] Figure 5 It shows a schematic structural diagram of a third embodiment of a sampling device according to the present invention;

[0033] Figure 6 A schematic diagram showing the structure of the protruding ring and the second protruding portion of the sampling device of the present invention in cooperation with each other;

[0034] Figure 7 A schematic diagram showing the structure of the protruding ring and the first protruding portion of the sampling device of the present invention in cooperation with each other;

[0035] Figure 8 A schematic diagram of the top structure of the sampling head of the sampling device of the present invention is shown;

[0036] Figure 9 A schematic diagram showing the connection between the discharge tray and the extension rod of the sampling device of the present invention is shown;

[0037] Figure 10 A schematic diagram showing the connection between the extension rod and the rotating component of the sampling device of the present invention is shown;

[0038] Figure 11 A schematic structural diagram showing a first embodiment of a sample storage cartridge of a sampling device of the present invention; and

[0039] Figure 12 A schematic structural diagram of a second embodiment of the sample storage cartridge of the sampling device of the present invention is shown.

[0040] The above drawings include the following reference numerals:

[0041] 1. Rotating rod; 2. Sampling head; 21. Main shell; 3. Sampling chamber; 31. Sampling port; 4. Sample storage tube; 41. Storage space; 42. Hard contact table; 5. Limiting ring; 6. Sealing cover; 7. Discharge rod; 71. Through hole; 8. Discharge tray; 9. Extension rod; 91. Axial groove; 10. Closing plate; 101. Raised ring; 11. First raised portion; 12. Second raised portion; 121. Wedge-shaped extrusion surface; 13. Rotating component; 131. Installation notch; 100. Auxiliary unloading mechanism; 21. Main shell. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] The present invention provides a sampling device, please refer to Figures 1 to 12 As shown, the sampling device includes: a rotating rod 1; a sampling head 2, the rotating rod 1 is connected to the sampling head 2 to drive the sampling head 2 to rotate, the sampling head 2 includes a sampling cavity 3 and a sampling port 31 connected to the sampling cavity 3; a sample storage tube 4, the sample storage tube 4 is detachably installed in the sampling cavity 3, and the sample storage tube 4 has a feeding tube opening arranged opposite to the sampling port 31, so that when the rotating rod 1 drives the sampling head 2 to extend into the soil, the soil enters the sample storage tube 4 through the sampling port 31 and the feeding tube opening in sequence.

[0044] The sampling device in the present invention includes a rotating rod 1, a sampling head 2 and a sample storage tube 4. The rotating rod 1 is connected to the sampling head 2 to drive the sampling head 2 to rotate. The sampling head 2 includes a sampling cavity 3 and a sampling port 31 connected to the sampling cavity 3; the sample storage tube 4 is detachably installed in the sampling cavity 3. The sample storage tube 4 has a feeding tube opening for being arranged opposite to the sampling port 31, so that when the rotating rod 1 drives the sampling head 2 to extend into the soil, the soil passes through the sampling port 31 and the feeding tube opening in turn into the sample storage tube 4, thereby completing the sampling. When the sampling device is used to sample the soil, the sample storage tube is pre-installed in the sampling head. This not only avoids the need for a sample mixing process each time sampling is performed, but also enables unmixed samples of the original depth range to be obtained during the experiment, which is convenient for use in different experiments and solves the problem that the soil taken by the sampling device in the prior art is easily mixed during transfer.

[0045] Specifically, the sampling port 31 is provided at the bottom of the sampling head 2. Figure 1 As shown, the end portion of the sampling port 31 is formed integrally with the main body of the sampling head 2. Figure 2 As shown, the end portion of the sampling port 31 is provided separately from the main body of the sampling head 2 and is detachably connected.

[0046] In this embodiment, if Figure 11 As shown, the sampling device further comprises a blocking cover 6, which blocks the opening of the sample storage tube 4 after the sample storage tube 4 containing soil is taken out from the sampling head 2. The blocking cover 6 can be provided to conveniently protect the soil in the sample storage tube 4.

[0047] In addition, the sampling device also includes a sampling drive component, which is drivably connected to the rotating rod 1 to drive the rotating rod 1 to rotate. By providing the sampling drive component, the rotating rod 1 can be driven to rotate more conveniently. Depending on the actual situation, an operating handle can be installed on the rotating rod 1. The operating handle can be manually operated through the operating cover to rotate the rotating rod 1.

[0048] Specifically, the sampling port 31 is arranged at the bottom of the sampling head 2; and / or Figure 11As shown, the sample storage cylinder 4 is provided with two sample inlet ports, and when the sample storage cylinder 4 is located in the sampling head 2, one of the sample inlet ports is opposite to the sampling port 31; the sampling device comprises two sealing covers 6, which are respectively sealed on the two sample inlet ports after the sample storage cylinder 4 storing the soil is taken out from the sampling head 2.

[0049] As shown in the drawings, the sample inlet port is arranged at the bottom end of the sample storage cylinder 4, and the top of the sample storage cylinder 4 is provided with a breathable hole; and / or the sample storage cylinder 4 is threadedly connected with the sampling head 2; and / or the sample storage cylinder 4 is a plurality of sample storage cylinders 4, which are all arranged in the sampling cavity 3. Figure 12

[0050] The specific structure of the sampling head 2 in the embodiment is that the sampling head 2 comprises a plurality of plate body parts, which are arranged in sequence and are adjustably arranged between adjacent two plate body parts, so that the plurality of plate body parts enclose a cylindrical structure, or at least two plate body parts of the plurality of plate body parts are arranged in overlap to form a taking and placing port for taking out or storing the sample storage cylinder 4.

[0051] Specifically, in the adjacent two plate body parts, one plate body part is provided with a plug-in hole, and the other plate body part is movably arranged to be plugged into the plug-in hole; or the sampling head 2 comprises a mounting ring, and each plate body part is movably mounted on the mounting ring along the mounting ring to enclose a cylindrical structure after the plurality of plate body parts are sequentially spliced along the mounting ring.

[0052] In order to limit the sample storage cylinder 4, the sampling device further comprises a limiting ring 5, which is located at the sampling port 31 to limit the sample storage cylinder 4 in the sampling cavity 3, and the ring cavity of the limiting ring 5 is arranged opposite to the sampling port 31 and the sample inlet port.

[0053] One arrangement of the limiting ring 5 is that the limiting ring 5 is threadedly connected with the inner wall of the sampling head 2, that is, the limiting ring is screwed on the open end of the cylindrical part; and / or the limiting ring 5 and the inner wall surface of the sampling head 2 form a limiting clamping groove, and at least part of the sample storage cylinder 4 is limited in the limiting clamping groove.

[0054] In the embodiment, as shown in the drawings, the sampling device further comprises an auxiliary unloading mechanism 100, at least part of the auxiliary unloading mechanism 100 extends into the sampling cavity 3, and at least part of the auxiliary unloading mechanism 100 is movably arranged to push the sample storage cylinder 4 in the sampling cavity 3 out of the sampling port 31. Figure 4

[0055] ​​The specific structure of the auxiliary unloading mechanism 100 in this embodiment is that the auxiliary unloading mechanism 100 includes: a unloading rod 7 and a unloading tray 8, and the unloading tray 8 is movably arranged in the sampling cavity 3 along the material taking direction of the sampling cavity 3; one end of the unloading rod 7 is located in the sampling cavity 3 and connected to the unloading tray 8, and the other end of the unloading rod 7 is located outside the sampling cavity 3, so that the unloading tray 8 is pushed to move by the unloading rod 7 to push out the sample storage tube 4.

[0056] Another arrangement of the limiting ring 5 is that the auxiliary unloading mechanism 100 also includes: a limiting ring 5 and an extension rod 9, one end of the extension rod 9 is connected to the unloading tray 8, and the other end of the extension rod 9 is connected to the limiting ring 5, and a storage space 41 for accommodating the sample storage tube 4 is formed between the limiting ring 5 and the unloading tray 8.

[0057] like Figure 4 、 Figure 9 As shown, the extension rod 9 in this embodiment is arranged as follows:

[0058] The extension rod 9 is clamped with the limiting ring 5, or the extension rod 9 and the limiting ring 5 are integrally formed; and / or

[0059] There are multiple extension rods 9, and the multiple extension rods 9 are arranged at intervals along the circumference of the limiting ring 5; and / or

[0060] The extension rod 9 is arranged parallel to the rotating rod 1; and / or

[0061] An axial groove 91 is provided on the inner wall of the sampling head 2 , and at least a portion of the extension rod 9 is located in the axial groove 91 .

[0062] In this embodiment, there are multiple unloading rods 7, and the multiple unloading rods 7 are arranged at intervals along a predetermined direction; the top of the sampling head 2 is provided with multiple penetration holes 71, and the multiple unloading rods 7 are arranged in a one-to-one correspondence with the multiple penetration holes 71, and each unloading rod 7 is penetrated in the corresponding penetration hole 71.

[0063] In this embodiment, if Figure 8 As shown, the top of the sampling head 2 is provided with a through hole 71, which is a strip-shaped hole. The discharge rod 7 is inserted into the through hole 71 and is movably arranged in the through hole 71. The extension rod 9 is rotatably connected to the discharge tray 8 to drive the discharge tray 8 to move by swinging the discharge rod 7. The provision of the strip-shaped through hole 71 makes it easier to avoid the discharge rod 7, thereby facilitating the swinging of the discharge tray 8.

[0064] In order to realize the rotational connection between the discharge tray 8 and the extension rod 9, a rotation hole is provided on the discharge tray 8, and a rotation component 13 is provided on the extension rod 9. At least part of the rotation component 13 is located in the rotation hole, and the contact surface between the rotation component 13 and the rotation hole is at least part of a spherical surface.

[0065] In this embodiment, if Figure 10 As shown, the rotating part 13 is provided with a mounting gap 131, and the top of the sample storage cylinder 4 is provided with a hard contact platform 42, and the mounting gap 131 is clamped at the edge of the hard contact platform 42.

[0066] In order to facilitate unloading, as shown, Figure 5 As shown, the sampling head 2 includes a main shell 21 and a closing plate 10, the side wall of the main shell 21 is provided with an unloading port, and the closing plate 10 is adjustably arranged to open or close the unloading port.

[0067] In this embodiment, the sampling device further comprises an auxiliary unloading mechanism 100, the auxiliary unloading mechanism 100 comprises an unloading rod 7, an unloading disc 8 and an extension rod 9, the unloading disc 8 is located in the sampling cavity 3, the unloading rod 7 is arranged in the sampling cavity 3, the unloading rod 7 is connected with the unloading disc 8, and the extension rod 9 is located in the sampling cavity 3 and connected with the unloading disc 8; wherein the closing plate 10 is installed on the extension rod 9 to move with the extension rod 9 to the position of opening or closing the unloading port.

[0068] In this embodiment, the extension rod 9 is provided with a first protruding part 11 and a second protruding part 12, and the first protruding part 11 and the second protruding part 12 are arranged in the extension direction of the extension rod 9; the closing plate 10 is provided with a protruding ring 101, and the protruding ring 101 is sleeved on the extension rod 9 and is limited between the first protruding part 11 and the second protruding part 12.

[0069] In this embodiment, the first protruding part 11 is located above the second protruding part 12, the second protruding part 12 is provided with a wedge-shaped extrusion surface 121, the inner wall surface of the protruding ring 101 has a matching surface matched with the wedge-shaped extrusion surface 121, and the wedge-shaped extrusion surface 121 is inclined to the axis of the extension rod 9, so that the closing plate 10 is moved in the direction perpendicular to the extension rod 9 through the cooperation between the wedge-shaped extrusion surface 121 and the matching surface. Specifically, the wall surface of the cylindrical part is provided with an unloading port, and the unloading port is movably connected with an arc-shaped closing plate.

[0070] As shown, Figures 1 to 12 The sampling device in the present application is a soil parameter detection device, which is used for soil sampling and comprises a rotating rod 1 and a sampling head 2 connected with each other, the sampling head 2 is a cylindrical part with an open bottom, a sampling cavity 3 is formed in the cylindrical part, the sampling device further comprises a sample storage cylinder 4, the inner wall of the sampling cavity 3 has an annular clamping groove, and the sample storage cylinder 4 is detachably connected in the annular clamping groove.

[0071] The cylindrical part comprises two half-cylindrical parts inserted with each other, the open end of the cylindrical part is detachably connected with a limiting ring, and the annular clamping groove is formed between the top of the limiting ring and the inner wall of the cylindrical part.

[0072] The soil parameter detection device of the present invention further includes a blocking cover 6. When the sample storage tube 4 stores soil outside the cylindrical member, the blocking cover blocks the opening of the sample storage tube. The bottom end of the sample storage tube 4 is open, and the top end of the sample storage tube 4 is provided with an air hole.

[0073] The soil parameter detection device of the present invention also includes an auxiliary discharge mechanism 100, which comprises a connected discharge rod and a discharge tray. The discharge tray is movably connected to the sampling chamber and abuts the top of the sample storage tube. The discharge rod is arranged parallel to the rotating rod 1 and extends through the sampling head. The discharge tray is provided with multiple extension rods, and retaining rings are detachably connected to one end of each of the extension rods. The inner wall of the sampling chamber is provided with multiple axial grooves, and each extension rod is slidably connected to each axial groove.

[0074] The soil parameter detection device provided in this embodiment can be adapted for both manual sampling, i.e., manually driving the rotating rod 1 to rotate, generally with a crossbar provided at the top of the rotating rod 1 to rotate and drive the rotating rod 1, and can also be adapted for automatic sampling, in which case the rotating rod 1 is driven to rotate by a power unit such as a diesel engine. A sampling head 2 is connected to one end of the rotating rod 1. The sampling head 2 is a cylindrical member with an open bottom end, so that a cylindrical sampling chamber 3 is formed inside the cylindrical member. The rotating rod 1 drives the sampling head 2 to rotate, and the sampling head 2 rotates to be inserted into the soil, so that the sampling chamber 3 is filled with soil. The sampling head 2 is then pulled upward to remove the soil, and then the soil is removed from the sampling head 2.

[0075] In this embodiment, the inner wall of the sampling cavity 3 is provided with an annular groove in which a sample storage tube 4 is arranged. That is, the sample storage tube 4 is inserted into the cylindrical member. The sample storage tube 4 is used to store sample soil. It is cylindrical and preferably made of a transparent material so that the soil sample inside can be directly observed. The sample storage tube 4 can be open at both ends or only at the bottom. The sample storage tube 4 can be detachably connected to the annular groove on the sampling cavity 3. The purpose of this arrangement is that when the sampling head 2 is inserted into the formation for sampling, the sample soil enters the sample storage tube 4. Then, the sampling head 2 is pulled upward and the sample storage tube 4 is removed from the sampling head 2 to obtain the soil sample. There is no need to use tools to dig out the sample soil from the sampling head 2 and then place it in another storage tool.

[0076] In this embodiment, the sample storage cylinder 4 is sleeved inside the sampling head 2. There are two ways to detachably connect the sample storage cylinder 4 and the sampling head 2. First, the cylindrical member includes two semi-cylindrical members that are plugged into each other, that is, the cylindrical member includes two semi-cylindrical members, and the two semi-cylindrical members are plugged into each other. Alternatively, a semi-cylindrical through hole can be opened in the middle of the cylindrical member, and one semi-cylindrical member is connected to the through hole. In either case, when the two semi-cylindrical members are separated, the sample storage cylinder 4 can be directly taken out from the inside, thereby realizing detachable Secondly, the open end of the cylindrical member is detachably connected to a limit ring 5, and an annular groove is formed between the top of the limit ring 5 and the inner wall of the cylindrical member, that is, the limit ring 5 forms a limiting structure for the sample storage tube 4. Before sampling, the sample storage tube 4 is inserted into the sampling cavity 3 through the open end, and then the limit ring 5 is installed at the open end, such as by screwing the limit ring 5. When sampling is completed, the limit ring 5 is first removed, and then the sample storage tube 4 filled with the sample is taken out, thereby realizing the detachable connection between the sample storage tube 4 and the sampling head 2. In essence, there are two ways: one is to take out the sample storage tube 4 from the open end at the bottom, and the other is to take out the sample storage tube 4 from the side.

[0077] The soil parameter detection device provided in an embodiment of the present invention pre-installs the sample storage tube 4 into the sampling head 2. This not only eliminates the need for sample mixing each time sampling is performed, but also enables unmixed samples of the original depth range to be obtained during the experiment, which is convenient for use in different experiments.

[0078] In each embodiment provided by the present invention, the sample storage tube 4 can be open at both ends, but preferably, the bottom end of the sample storage tube 4 is open, and the top end of the sample storage tube 4 is provided with an air hole. The purpose of such a setting is that the bottom end must be open to allow the sample to enter during sampling, while the top end can be closed so that part of the sample can be prevented from naturally falling from the top when the storage tube is taken out. The purpose of opening the air hole is to allow the gas in the sampling chamber 3 to be discharged from the air hole during sampling.

[0079] In another embodiment provided by the present invention, a sealing cover 6 is further included. When the sample storage tube 4 stores soil on the outside of the cylindrical member, that is, after the sampling is completed and the sample storage tube 4 is taken out from the sampling head 2, the sealing cover 6 is sealed on the opening of the sample storage tube 4. When the sample storage tube 4 has two openings, each opening is equipped with a sealing cover 6. When there is only one opening, a sealing cover 6 is configured on the opening. In this way, a complete sample that clearly shows the fault can be obtained and used in specific experiments in the laboratory.

[0080] In another embodiment provided by the present invention, an auxiliary unloading mechanism 100 is also included. Obviously, for the two aforementioned unloading methods, the side opening unloading structure will reduce the overall strength of the sampling head 2. After long-term use, especially the high-speed rotation of the automatic sampling equipment, the probability of deformation of the sampling head 2 will increase, affecting its service life. For the sampling head 2 with a bottom opening, it is easy for the sample storage tube 4 to be stuck in the sampling head 2 and unable to be taken out, or part of the sample falls first and the sample storage tube 4 is taken out later during unloading. The auxiliary unloading mechanism is used to assist the sample storage tube 4 in being taken out from the bottom opening of the sampling head 2. The auxiliary unloading mechanism includes a connected unloading rod 7 and a unloading tray 8. The unloading tray 8 is movably connected to the sampling cavity 3 and abuts against the top of the sample storage tube 4. The material tray 8 is arranged along the radial direction of the sampling chamber 3, but can reciprocate axially in the sampling chamber 3. The unloading rod 7 is arranged parallel to the rotating rod 1 and passes through the sampling head 2, that is, one end of the unloading rod 7 inside the sampling chamber 3 is fixed to the unloading tray 8, and the other end is located outside the sampling chamber 3. When in use, the unloading tray 8 is attached to the top wall of the sampling chamber 3, that is, it abuts against the top of the sample storage tube 4. The sample storage tube 4 is limited between the unloading tray 8 and the limiting ring 5. When the sample storage tube 4 is to be removed, the limiting ring 5 is removed first, and then the unloading rod 7 is pushed through the unloading tray 8 to pressurize the sample storage tube 4 and the internal sample. The sample storage tube 4 and the internal sample are pushed out of the sampling head 2 as a whole. It is not only convenient to operate, but also the complete sample storage tube 4 and the internal sample can be obtained.

[0081] Furthermore, the discharge tray 8 is provided with a plurality of extension rods 9, and the retaining ring 5 is removably connected to one end of the plurality of extension rods 9. The extension rods 9 are located on the side of the discharge tray 8 facing away from the discharge rod 7. The extension rods 9 are slidably connected to the sampling chamber 3. Preferably, the inner wall of the sampling chamber 3 is provided with a plurality of axial grooves 91, and each extension rod 9 is slidably connected to each axial groove 91. The effect of this arrangement is that the connection and removal of the retaining ring 5 and the sampling head 2 are relatively inconvenient. Screw connection is the most preferred option, but installation and removal are more complicated. Snap connection is difficult to achieve due to space limitations and the inability of the retaining ring 5 to deform. The provision of the extension rods 9 makes snap connection easier. A structure similar to a male and female plug is configured between the extension rods 9 and the retaining ring 5 to facilitate installation and removal. For example, the retaining ring 5 has a hole, and the ends of the extension rods 9 form two snap-fitting strips with a gap between them. The two snap-fitting strips can be inserted into the hole in the retaining ring 5. The retaining ring 5 can be removed by pulling it firmly, which is more convenient.

[0082] When the sample container 4 is in the storage tank 2, the limit ring 5 is fixed to the storage tank 2, and ...

[0083] In another embodiment provided by the present invention, a discharge port is provided on the wall surface of the cylindrical member, and the discharge port is movably connected to an arc-shaped closing plate 10, and the arc of the arc-shaped closing plate 10 is consistent with the arc of the cylindrical member, that is, the cylindrical member has a discharge state in which the arc-shaped closing plate 10 can be removed to allow the discharge port to leak out, and a closed state in which the arc-shaped closing plate 10 closes the discharge port. The closed state corresponds to daily use. The purpose of such a setting is that when it is necessary to sample soil in a deeper area, such as a depth of 60 cm, it is usually necessary to first remove the surface soil through the sampling head 2 twice or even three times and discard it to form a hole, and finally install the sample storage tube 4 when it reaches 60 cm for sampling. When the soil is more viscous, it is more difficult to get the surface soil out of the bottom of the sampling head 2. Obviously, at this time, the discharge tray 8 can play a role by assisting by squeezing, but the discharge tray 8 of the soil with greater viscosity also requires greater force. At this time, the arc-shaped closing plate 10 is first removed to leak out the discharge port, so as to facilitate the discharge of the surface soil from the discharge port and reduce the difficulty of unloading.

[0084] In still another embodiment of the present application, the unloading resistance reducing mechanism is also provided, which comprises a first protruding part 11 and a second protruding part 12 arranged on the extension rod 9, and a protruding ring 101 arranged on the arc-shaped closing plate 10, the arc-shaped closing plate 10 is arranged in one-to-one correspondence with the extension rod 9, the protruding ring 101 is sleeved on the extension rod 9 through the inner hole thereof between the first protruding part 11 and the second protruding part 12, the first protruding part 11 is located above the protruding ring 101, the second protruding part 12 is located below the protruding ring 101, and a wedge-shaped extrusion surface 121 is arranged on the side of the second protruding part 12 away from the arc-shaped closing plate 10, and a wedge-shaped surface matched with the wedge-shaped extrusion surface 121 is arranged on the inner hole, so that when unloading, the unloading disc 8 moves towards the opening of the sampling head 2 to drive the extension rod 9 to move synchronously, at this time, the first protruding part 11 is close to and abuts against the protruding ring 101 to drive the arc-shaped closing plate 10 to be separated from the unloading port, that is, the arc-shaped closing plate 10 is passively unloaded step by step, when the stroke is used to unload the surface soil, at this time, the extrusion of the unloading disc 8 and the separation of the arc-shaped closing plate 10 are almost synchronous, and the unloading step of the separate closing plate 10 is omitted, when the stroke is used to unload the sample storage cylinder 4, at this time, the closing plate 10 can be separated from the sample storage cylinder 4, so as to reduce the contact area between the sampling head 2 and the sample storage cylinder 4, reduce the friction, and make the unloading resistance of the sample storage cylinder 4 smaller. When unloading is completed and reset, the unloading disc 8 moves upward to drive the second protruding part 12 to move upward, the second protruding part 12 is close to and abuts against the protruding ring 101 to drive the arc-shaped closing plate 10 to re-close the unloading port.

[0085] Since the unloading state and the closing state of the arc-shaped closing plate 10 have different positions in the radial direction of the sampling head 2, and the first protruding part 11 and the second protruding part 12 can only adjust the position in the axial direction, the above structure may cause that the closing plate 10 cannot completely close the unloading port in the closing state, but has a radial gap, the wedge-shaped extrusion surface 121 and the wedge-shaped surface are arranged in the embodiment, when the unloading disc 8 moves upward to drive the second protruding part 12 to move upward, the wedge-shaped extrusion surface 121 of the second protruding part 12 extrudes the wedge-shaped surface, so as to drive the arc-shaped closing plate 10 to move in the radial direction of the sampling head 2 to be attached to the sampling head 2, and eliminate the gap between the closing plate 10 and the sampling head 2. As a matched structure, the bottom of the closing plate 10 and the bottom of the unloading port are also wedge-shaped surface matched.

[0086] In a further embodiment, there are two extension rods 9, which are located at both ends of a diameter line of the discharge tray 8, and the ends of the extension rods 9 are rotatably connected to the discharge tray 8. For example, a spherical hole is provided on the discharge tray 8, and the end of the extension rod 9 is rotatably connected to the spherical hole through the spherical body (rotating component 13). At the same time, a strip hole is provided on the top of the sampling head 2, and the discharge rod 7 passes through the sampling head 2 through the strip hole. The effect of such an arrangement is a lever unloading effect. As above, when the soil unloading pressure is large, at this time, the extension rod 9 can be swung in the strip hole to allow the discharge tray 8 to swing with the ends of the two extension rods 9 as the axis, so that part of the discharge tray 8 squeezes part of the soil, thereby improving the squeezing effect. For example, the two extension rods 9 are respectively arranged on the left and right sides of the discharge tray 8. The discharge tray 8 can be swung forward to squeeze the front half of the soil in the sampling head 2, and then the discharge tray 8 can be swung backward to squeeze the back half of the soil in the sampling head 2, thereby realizing the lever pressure unloading function. In this way, the unloading tray 8 and the extension rod 9 have the function of pressurized unloading without affecting the unloading function mentioned above.

[0087] In a further embodiment, the spherical body (rotating component 13) is provided with a mounting notch 131 in the direction of the central axis of the sampling head 2, and the top of the sample storage tube 4 is a hard structure (hard contact platform 42) and the edge portion fits in the mounting notch 131, so that when the surface soil is unloaded, the unloading tray 8 can swing normally to assist in unloading, but when the sample storage tube 4 is unloaded, if the unloading tray 8 swings, it may squeeze the sample storage tube 4, and at this time, since the hard structure on the top of the sample storage tube 4 is stuck in the mounting notch 131, the unloading tray 8 cannot rotate relative to the spherical body, that is, the passive effect of the unloading tray 8 being unable to swing when the sample storage tube 4 is installed and being able to swing and pressurize when the surface soil is unloaded is achieved.

[0088] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0089] The sampling device of the present invention includes a rotating rod 1, a sampling head 2, and an unmixed sample of the original depth range when sampling, which is convenient for use in different experiments and solves the problem that the soil taken by the sampling device in the prior art is easily mixed during transfer.

[0090] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A sampling device, characterized in that: include: Rotating rod (1); A sampling head (2), wherein the rotating rod (1) is connected to the sampling head (2) to drive the sampling head (2) to rotate, and the sampling head (2) includes a sampling cavity (3) and a sampling port (31) communicating with the sampling cavity (3); A sample storage tube (4), the sample storage tube (4) being detachably mounted in the sampling cavity (3), the sample storage tube (4) having a feed tube opening arranged opposite to the sampling port (31), so that when the rotating rod (1) drives the sampling head (2) to extend into the soil, the soil sequentially passes through the sampling port (31) and the feed tube opening into the sample storage tube (4); There are multiple sample storage tubes (4), and the multiple sample storage tubes (4) are all arranged in the sampling cavity (3); the sample storage tubes (4) are threadedly connected to the sampling head (2); It also includes: an auxiliary unloading mechanism (100), at least a portion of the auxiliary unloading mechanism (100) extends into the sampling cavity (3), and at least a portion of the auxiliary unloading mechanism (100) is movably arranged to push the sample storage cylinder (4) in the sampling cavity (3) out of the sampling port (31); The auxiliary unloading mechanism (100) comprises: A discharge rod (7) and a discharge tray (8), wherein the discharge tray (8) is movably arranged in the sampling cavity (3) along the material taking direction of the sampling cavity (3); one end of the discharge rod (7) is located in the sampling cavity (3) and connected to the discharge tray (8), and the other end of the discharge rod (7) is located outside the sampling cavity (3), so that the discharge tray (8) is pushed to move by the discharge rod (7) to push the sample storage cylinder (4) out; A limiting ring (5) and an extension rod (9), one end of the extension rod (9) is connected to the discharge tray (8); the limiting ring (5) is located at the sampling port (31) to limit the sample storage tube (4) in the sampling cavity (3), and the annular cavity of the limiting ring (5) is arranged relative to the sampling port (31) and the feeding tube port; A through hole (71) is provided on the top of the sampling head (2), and the through hole (71) is a strip-shaped hole. The discharge rod (7) is passed through the through hole (71) and is movably arranged in the through hole (71); the extension rod (9) is rotatably connected to the discharge tray (8) so as to drive the discharge tray (8) to move by swinging the discharge rod (7); The discharge tray (8) is provided with a rotating hole, the extension rod (9) is provided with a rotating component (13), at least a portion of the rotating component (13) is located in the rotating hole, and the contact surface between the rotating component (13) and the rotating hole is at least a portion of a spherical surface; The rotating component (13) is provided with a mounting notch (131), the top of the sample storage cylinder (4) is provided with a hard contact platform (42), and the mounting notch (131) is clamped at the edge of the hard contact platform (42).

2. The sampling device according to claim 1, characterized in that The sampling device also includes: A sealing cap (6), which is sealed on the feed tube opening when the sample storage tube (4) storing the soil is taken out from the sampling head (2); and / or A sampling drive component is connected to the rotating rod (1) to drive the rotating rod (1) to rotate.

3. The sampling device according to claim 1, characterized in that The sampling port (31) is arranged at the bottom of the sampling head (2); and / or Both ends of the sample storage tube (4) are provided with the feeding openings. When the sample storage tube (4) is located in the sampling head (2), one of the feeding openings of the sample storage tube (4) is opposite to the sampling port (31). The sampling device includes two blocking covers (6). When the sample storage tube (4) storing the soil is taken out from the sampling head (2), the two blocking covers (6) are respectively blocked on the two feeding openings.

4. The sampling device according to claim 1, characterized in that The feeding port is arranged at the bottom end of the sample storage tube (4), and an air hole is arranged at the top of the sample storage tube (4).

5. The sampling device according to claim 1, characterized in that The sampling head (2) includes a plurality of plate parts, which are arranged in sequence, and the positions between two adjacent plate parts are adjustable so that the plurality of plate parts form a cylindrical structure, or at least two of the plurality of plate parts are overlapped to form a take-out opening for taking out or storing the sample storage cylinder (4).

6. The sampling device according to claim 5, characterized in that Among the two adjacent plate parts, one of the plate parts is provided with an inserting hole, and the other plate part is movably provided to be inserted into the inserting hole; or The sampling head (2) comprises a mounting ring, and each of the plate parts is movably mounted on the mounting ring along the mounting ring, so that the cylindrical structure is formed after the plurality of plate parts are sequentially spliced ​​along the mounting ring.

7. The sampling device according to claim 1, characterized in that The limiting ring (5) is threadedly connected to the inner wall of the sampling head (2); and / or A limiting groove is formed between the limiting ring (5) and the inner wall surface of the sampling head (2), and at least a portion of the sample storage tube (4) is limited in the limiting groove.

8. The sampling device according to claim 1, characterized in that The other end of the extension rod (9) is connected to the limiting ring (5), and a storage space (41) for accommodating the sample storage cylinder (4) is formed between the limiting ring (5) and the discharge tray (8).

9. The sampling device according to claim 8, characterized in that The extension rod (9) is clamped with the limiting ring (5), or the extension rod (9) and the limiting ring (5) are integrally formed; and / or There are a plurality of extension rods (9), and the plurality of extension rods (9) are arranged at intervals along the circumference of the limiting ring (5); and / or The extension rod (9) is arranged parallel to the rotating rod (1); and / or An axial groove (91) is provided on the inner wall of the sampling head (2), and at least a portion of the extension rod (9) is located in the axial groove (91).

10. The sampling device according to claim 1, characterized in that There are a plurality of discharge rods (7), and the plurality of discharge rods (7) are arranged at intervals along a predetermined direction; a plurality of penetration holes (71) are provided on the top of the sampling head (2), and the plurality of discharge rods (7) are arranged in a one-to-one correspondence with the plurality of penetration holes (71), and each discharge rod (7) is penetrated in a corresponding penetration hole (71).

11. The sampling device according to any one of claims 1 to 6, characterized in that The sampling head (2) comprises a main housing (21) and a closing plate (10); a discharge port is provided on a side wall of the main housing (21); and the closing plate (10) is adjustable in position to open or close the discharge port.

12. The sampling device according to claim 11, characterized in that The closing plate (10) is mounted on the extension rod (9) so as to move with the extension rod (9) to a position for opening or closing the discharge port.

13. The sampling device according to claim 12, characterized in that The extension rod (9) is provided with a first protrusion (11) and a second protrusion (12), and the first protrusion (11) and the second protrusion (12) are arranged at intervals along the extension direction of the extension rod (9); A raised ring (101) is provided on the closing plate (10), and the raised ring (101) is sleeved on the extension rod (9) and is limited between the first raised portion (11) and the second raised portion (12).

14. The sampling device according to claim 13, characterized in that The first protrusion (11) is located above the second protrusion (12), and a wedge-shaped extrusion surface (121) is provided on the second protrusion (12). The inner wall surface of the protrusion ring (101) has a mating surface that matches the wedge-shaped extrusion surface (121), and the wedge-shaped extrusion surface (121) is inclined to the axis of the extension rod (9), so that the closing plate (10) moves in a direction perpendicular to the extension rod (9) through the mating between the wedge-shaped extrusion surface (121) and the mating surface.

Images