Portable Sediment Column Sampler

Abstract

The present invention provides a portable sediment columnar sampler, which comprises: a tube body, which is a cylindrical structure, and the tube body is made of PVC material; a protective cover, which is detachably arranged at the upper end of the tube body, the protective cover is provided with an air pressure balance hole, and the outer side of the protective cover is provided with a first hanging ear; a drill bit, which is detachably arranged at the lower end of the tube body, and the outer side of the drill bit is provided with a second hanging ear corresponding to the first hanging ear; a fixing piece, whose two ends are respectively connected to the first hanging ear and the second hanging ear. The present invention has the characteristics of being light in weight and detachable, preventing the PVC tube body from being cracked by tamping, being easy to drag out from the mud, easy to sample, and convenient to carry in mangrove swamps and intertidal zones.

Description

Technical Field

[0001] The present invention relates to the field of sediment sampling, and more particularly to a portable sediment column sampler. Background Art

[0002] Analyzing sediment column samples can effectively study the evolution characteristics of organic matter deposition process and age, so the collection of sediment column samples has become one of the important steps in environmental analysis. At present, the collection of column samples in mangrove wetlands, mudflats and other sea areas mainly has the following problems: (1) The mud in mangrove areas is soft and difficult to walk. Existing weighted or stainless steel samplers are difficult to carry; (2) PVC pipes are often used for collection by direct tamping. Due to the obstruction of mangrove roots or the hardening of the sediment layer at a certain depth, it is difficult to make the collection pipe reach the planned depth; (3) When the upper edge of the PVC pipe is tamped with a hammer, the pipe will crack due to the small force surface; (4) After the sampling pipe reaches a certain depth, the exposed part of the pipe is short and difficult to grasp, and it is impossible for multiple people to operate at the same time, so the lifting process is difficult and time-consuming; (5) In areas with high water content, the bottom sediment may slide down and fall during the lifting process; (6) After the collection is completed, the sediment column is mainly transported by shoulder and other manual methods, which is difficult in mangrove areas where walking is difficult. Therefore, it is of great significance to design a portable sediment column sampler and auxiliary transportation device suitable for collecting sediments in mangroves, tidal flats and other areas. Summary of the invention

[0003] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages which will be described hereinafter.

[0004] Another object of the present invention is to provide a portable sediment column sampler which is light in weight, detachable, prevents the PVC tube from being cracked by ramming, is easy to drag out of the mud, is easy to sample, and is convenient to carry in mangrove swamps and intertidal zones.

[0005] In order to achieve these objects and other advantages of the present invention, there is provided a portable sediment column sampler, comprising:

[0006] The tube body is a cylindrical structure and is made of PVC material;

[0007] A protective cover, which is detachably arranged on the upper end of the tube body, the protective cover is provided with an air pressure balance hole, and the outer side of the protective cover is provided with a first hanging ear;

[0008] a drill bit, which is detachably arranged at the lower end of the tube body, and a second hanging ear corresponding to the first hanging ear is arranged on the outer side of the drill bit;

[0009] The fixing piece has two ends which are detachably connected to the first hanging ear and the second hanging ear respectively.

[0010] The present invention adds a protective cover to the top of the tube body and a metal drill bit to the bottom of the tube body. When sampling is performed by tamping when the sludge is relatively hard, the protective cover and the drill bit can protect the tube body from rupture. The protective cover and the drill bit are connected by a fixing piece. During the process of taking out the sampler, it is convenient to use external auxiliary tools to provide a force point to take the sampler out of the sludge, and the drill bit can be prevented from falling off.

[0011] Preferably, the number of the first hanging ears is 2, and the two first hanging ears are symmetrically arranged on the outside of the protective cover; the number of the second hanging ears is 2, and the two second hanging ears are symmetrically arranged on the outside of the drill bit.

[0012] Preferably, it further comprises an auxiliary transportation device, wherein the auxiliary transportation device comprises:

[0013] A plastic plate, the upper surface of which is provided with a fixing groove for fixing the tube body, a connecting rod made of plastic is provided on the front and rear sides of one end of the plastic plate, the connecting rod is a hollow tubular structure, and the plastic plate is a sled plate-like structure, that is, an upwardly tilted arc plate is provided on the left and right sides of the plastic plate;

[0014] The telescopic rod comprises a front telescopic rod and a rear telescopic rod, wherein the front telescopic rod is slidably sleeved in the front connecting rod, and the rear telescopic rod is slidably sleeved in the rear connecting rod, and the front telescopic rod and the rear telescopic rod are both connected and fixed to the front connecting rod and the rear connecting rod through a clamp structure;

[0015] A towing rod, one end of which is connected to the front telescopic rod, and the other end of which is connected to the rear telescopic rod. The towing rod is integrally formed with the front telescopic rod and the rear telescopic rod.

[0016] After sampling in muddy environments such as mangrove swamps and tidal flats, the present invention takes out the sampler, seals both ends of the tube body and places the tube body in a fixed groove, utilizes the characteristic that the auxiliary transport device floats on the mud surface, and drags the auxiliary transport device to achieve dragging of the sample on the mud.

[0017] Preferably, the front connecting rod and the rear connecting rod are connected to the plastic plate through a connecting piece, the connecting piece forms an angle of 90-150° with the plane where the plastic plate is located, the connecting piece is a U-shaped groove structure, the connecting piece and the plastic plate are integrally formed, the lower ends of the front connecting rod and the rear connecting rod are hinged in the groove of the connecting piece, and the opening direction of the groove of the connecting piece is opposite to the plastic plate so that the connecting rod can be rotatably folded on both sides of the plastic plate.

[0018] Preferably, a canvas baffle is detachably provided between the front connecting rod and the rear connecting rod, the opening direction of the fixing groove is upward, and the bottom of the fixing groove is gradually raised from the right side to the left side to the notch of the fixing groove so that the longitudinal section of the fixing groove is a right triangle.

[0019] Preferably, the tight hoop structure comprises:

[0020] Protrusions are arranged at intervals along the length direction of the telescopic rod, and the protrusions are hemispherical structures;

[0021] A clamping hole, which is arranged on the connecting rod, and the protrusion is detachably clamped in the clamping hole;

[0022] At least two slots are provided at one end of the connecting rod away from the plastic plate and are arranged along the length direction of the connecting rod, and an external thread is provided on the outer side of the end of the connecting rod away from the plastic plate;

[0023] The sleeve is provided with an internal thread inside so that the connecting rod is threadedly connected to the sleeve. The diameter of the upper end of the sleeve is smaller than the diameter of the lower end so that the sleeve is tightened downward to position the protrusion in the clamping hole.

[0024] The sleeve is sleeved on the connecting rod and is threadedly connected with the connecting rod. When the sleeve is screwed downward, the upper end of the connecting rod is squeezed to reduce the opening of the upper end so as to fix the protrusion in the clamping hole to prevent the telescopic rod from slipping out of the connecting rod when the towing rod is dragged.

[0025] Preferably, the drill bit comprises a metal head and a closed structure, the longitudinal section of the metal head is a truncated cone, the metal head is a hollow structure, the closed structure is arranged at the upper end of the metal head, and the closed structure comprises:

[0026] A connecting cylinder, which is a cylindrical structure;

[0027] The upper cylinder is sleeved in the connecting cylinder, the inner diameter of the connecting cylinder is larger than the outer diameter of the upper cylinder to form a first receiving cavity between the inner wall of the connecting cylinder and the outer wall of the upper cylinder, a first annular convex edge is arranged on the outer cylinder wall of the lower end of the upper cylinder, a first gap is formed between the first annular convex edge and the inner wall of the connecting cylinder, a first connecting plate is arranged on the outer cylinder wall of the upper end of the upper cylinder, the first connecting plate is respectively connected with the connecting cylinder and the upper cylinder to fix the upper cylinder in the connecting cylinder, an annular positioning edge is arranged on the inner cylinder wall of the lower end of the upper cylinder, and when the tube body is sleeved on the upper cylinder, the lower end of the tube body abuts against the annular positioning edge;

[0028] A lower cylinder body, which is sleeved in the connecting cylinder, the inner diameter of the connecting cylinder is larger than the outer diameter of the lower cylinder body to form a second receiving cavity between the inner wall of the connecting cylinder and the outer wall of the lower cylinder body, a second annular convex edge is arranged on the outer cylinder wall of the upper end of the lower cylinder body, a second gap is formed between the second annular convex edge and the inner wall of the connecting cylinder, a third gap is arranged between the lower end of the upper cylinder body and the upper end of the lower cylinder body, a second connecting plate is arranged on the outer cylinder wall of the upper end of the lower cylinder body, and the second connecting plate is respectively connected to the connecting cylinder and the lower cylinder body to fix the lower cylinder body in the connecting cylinder;

[0029] A sealing member, which is made of a rubber material, wherein a first annular positioning member is disposed at the upper end of the sealing member, and a second annular positioning member is disposed at the lower end of the sealing member, wherein the upper portion of the sealing member is sleeved in the first receiving cavity, and the lower portion of the sealing member is sleeved in the second receiving cavity, and the first annular positioning member and the second annular positioning member are made of uniform elastic rubber material;

[0030] A tensioning structure, comprising an elastic rubber ring and an annular positioning groove, wherein the annular positioning groove is arranged in the middle of the connecting tube and is opposite to the third gap, and the elastic rubber ring is sleeved in the annular positioning groove;

[0031] A trigger structure, which includes a plurality of first through holes, two second through holes, a positioning rod, a positioning ring and a trigger member, wherein the first through holes penetrate the upper groove wall and the lower groove wall of the annular positioning groove, the first through holes are arranged on the annular positioning groove at equal intervals along the circumference of the annular positioning groove, the positioning rod is sleeved in the first through hole to position the elastic rubber ring in an open state in the annular positioning groove, the upper end of the positioning rod is fixedly connected with the positioning ring in an integral form, the two second through holes are symmetrically arranged on the first connecting plate and penetrate the first connecting plate, one end of the trigger member is connected to the positioning ring, and the other end penetrates the second through hole and extends to the external space.

[0032] When in use, the lower end of the tube body is sleeved in the upper cylinder body, and the lower end of the tube body is made to abut against the annular positioning edge, the protective cover is sleeved on the upper end of the tube body, the first hanging ear and the second hanging ear are connected by a fixing piece, the sampler is vertically placed at the sampling point, and the protective cover is tamped to make the drill bit and the tube body enter the sampling layer. After the drill bit reaches the required sampling layer, the two triggering pieces are pulled upward at the same time, driving the positioning ring and the positioning rod to move upward, and the elastic rubber ring sleeved in the annular positioning groove is in a stretched state, that is, an open state, and slides out of the annular positioning groove due to the loss of the blocking effect of the positioning rod and shrinks. At this time, the first annular ring on the seal The positioning piece slides downward and is engaged in the first annular gap formed by the upper groove wall and the first annular convex edge to seal the first annular gap. The second annular positioning piece slides upward and is engaged in the second annular gap formed by the lower groove wall and the second annular convex edge to seal the second annular gap. The elastic rubber ring tightly clamps the middle part of the seal to shrink the middle part of the seal, that is, to separate the upper and lower parts of the seal. The external auxiliary lifting tool is connected to the fixing piece to lift the sampler through the auxiliary lifting tool, and the sampler is placed at an angle in the fixing groove of the auxiliary transportation device, so that the sample can be easily transported out of the swamp.

[0033] Preferably, the protective cover is provided with a rod slot hole corresponding to the second through hole, the trigger member is a trigger rod, and the upper end of the trigger rod is inserted into the rod slot hole.

[0034] The present invention has at least the following beneficial effects:

[0035] 1. The present invention adds a protective cover to the top of the tube body and a metal drill bit to the bottom of the tube body. When the sludge is hard and the tube body is sampled by ramming the tube body, the protective cover and the drill bit can protect the tube body from rupture. The protective cover and the drill bit are connected by a fixing piece. During the process of removing the sampler, it is convenient to use an external auxiliary tool to provide a force point to remove the sampler from the sludge and prevent the drill bit from falling.

[0036] 2. After sampling in muddy environments such as mangrove swamps and mudflats, the present invention takes out the sampler, seals both ends of the tube body and places the tube body in a fixed groove, utilizes the characteristic that the auxiliary transport device floats on the mud surface, and drags the auxiliary transport device to achieve the dragging of the sample on the mud.

[0037] 3. The present invention drives the positioning ring and the positioning rod to move upward by pulling the trigger member upward. The elastic rubber ring sleeved in the annular positioning groove slides out of the annular positioning groove and shrinks due to the loss of the blocking effect of the positioning rod. At this time, the first annular positioning member on the sealing member slides downward and is engaged with the first annular gap formed by the upper groove wall and the first annular convex edge to seal the first annular gap. The second annular positioning member slides upward and is engaged with the second annular gap formed by the lower groove wall and the second annular convex edge to seal the second annular gap. The elastic rubber ring tightly clamps the middle part of the sealing member to seal the middle part of the sealing member.

[0038] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0040] Figure 2 What is described is a schematic diagram of the structure of an auxiliary transportation tool;

[0041] Figure 3 Illustrated is a schematic diagram of the structure of a closed structure.

[0042] 1. Tube body; 2. Protective cover; 3. First hanging ear; 4. Drill bit; 5. Second hanging ear; 6. Fixing piece; 7. Connecting rod; 8. Telescopic rod; 9. Drag rod; 10. Fixing groove; 11. Canvas baffle; 12. Enclosed structure; 13. Connecting cylinder; 14. Upper cylinder; 15. Lower cylinder; 16. First storage cavity; 17. First annular convex edge; 18. Connecting piece; 19. First annular positioning piece; 20. Second annular positioning piece; 21. Elastic rubber ring; 22. Annular positioning groove; 23. Positioning rod; 24. Positioning ring; 25. Trigger; 26. First connecting plate; 27. Second connecting plate; 28. Sealing piece; 29. ​​Metal head; 30. Annular positioning edge. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0044] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0045] Example

[0046] like Figure 1-3 A portable sediment column sampler is shown, comprising:

[0047] The tube body 1 is a cylindrical structure and is made of PVC material;

[0048] A protective cover 2 is detachably arranged on the upper end of the tube body 1, an air pressure balance hole is arranged on the protective cover 2, and a first hanging ear 3 is arranged on the outer side of the protective cover 2;

[0049] a drill bit 4, which is detachably arranged at the lower end of the tube body 1, and a second hanging ear 5 corresponding to the first hanging ear 3 is arranged on the outer side of the drill bit 4;

[0050] The fixing member 6 has two ends connected to the first hanging ear 3 and the second hanging ear 5 respectively. If the fixing member 6 is a rope, the two ends of the rope are connected to the first hanging ear 3 and the second hanging ear 5 respectively and are detachable.

[0051] The present invention adds a protective cover 2 on the top of the tube body 1. When the sludge is hard, the protective cover 2 can be rammed to prevent the tube body 1 from breaking. The protective cover 2 and the drill bit 4 are connected by a fixing member 6. During the process of removing the sampler, it is convenient to use an external auxiliary tool to provide a force point to remove the sampler from the sludge, and the drill bit 4 can be prevented from falling.

[0052] Preferably, the number of the first hanging ears 3 is 2, and the two first hanging ears 3 are symmetrically arranged on the outside of the protective cover 2; the number of the second hanging ears 5 is 2, and the two second hanging ears 5 are symmetrically arranged on the outside of the drill bit 4.

[0053] On the basis of the above embodiment, in another technical solution, an auxiliary transportation device is also included, and the auxiliary transportation device includes:

[0054] A plastic plate, the upper surface of which is provided with a fixing groove 10 for fixing the tube body 1, the front side and the rear side of one end of the plastic plate are both provided with a connecting rod 7 made of plastic, the connecting rod 7 is a hollow tubular structure, and the plastic plate is a sled plate structure, that is, the left side and the right side of the plastic plate are both provided with an upwardly tilted arc plate;

[0055] The telescopic rod 8 comprises a front telescopic rod and a rear telescopic rod, wherein the front telescopic rod is slidably sleeved in the front connecting rod, and the rear telescopic rod is slidably sleeved in the rear connecting rod, and the front telescopic rod and the rear telescopic rod are both connected and fixed to the front connecting rod and the rear connecting rod through a clamp structure;

[0056] The towing rod 9 has one end connected to the front telescopic rod and the other end connected to the rear telescopic rod. The towing rod 9 is integrally formed with the front telescopic rod and the rear telescopic rod.

[0057] After sampling in muddy environments such as mangrove swamps and tidal flats, the present invention takes out the sampler, seals both ends of the tube body 1, and places the tube body 1 in a fixed groove 10. The auxiliary transport device floats on the mud surface, and the sample is dragged on the mud by dragging the auxiliary transport device.

[0058] On the basis of the above embodiment, in another technical scheme, the front connecting rod and the rear connecting rod are both connected to the plastic plate through a connecting piece 18, the connecting piece is at an angle of 90-150° to the plane where the plastic plate is located, the connecting piece is a U-shaped groove structure, the connecting piece and the plastic plate are integrally formed, the lower ends of the front connecting rod and the rear connecting rod are both hinged in the groove of the connecting piece 18, and the opening direction of the groove of the connecting piece is opposite to the plastic plate so that the front connecting rod and the rear connecting rod can be rotatably folded on the front and rear sides of the plastic plate, respectively.

[0059] On the basis of the above embodiment, in another technical solution, a canvas baffle 11 is detachably provided between the front connecting rod 7 and the rear connecting rod 7, the opening direction of the fixing groove 10 is upward, and the bottom of the fixing groove 10 is gradually raised from the right to the left to the notch of the fixing groove 10 so that the longitudinal section of the fixing groove is a right triangle. The tube body of the sampler is relatively long, usually up to about 1 meter, and by setting a gradually rising slope from the right to the left in the fixing groove, when the tube body is placed in the fixing groove, the tube body rests on the canvas baffle to prevent the tube body from tipping over.

[0060] On the basis of the above embodiment, in another technical solution, the tight hoop structure includes:

[0061] protrusions, which are arranged at intervals along the length direction of the telescopic rod 8, and the protrusions are hemispherical structures;

[0062] A snap-fit ​​hole, which is provided on the connecting rod 7, and the protrusion is detachably snap-fitted into the snap-fit ​​hole;

[0063] At least two slots are provided at one end of the connecting rod 7 away from the plastic plate and are arranged along the length direction of the connecting rod 7. The outer side of the end of the connecting rod 7 away from the plastic plate is provided with an external thread;

[0064] The sleeve is provided with an internal thread inside so that the connecting rod 7 is threadedly connected to the sleeve. The diameter of the upper end of the sleeve is smaller than the diameter of the lower end so that the sleeve can be tightened downward to position the protrusion in the clamping hole.

[0065] The connecting rod 7 is made of plastic with a certain elasticity. The sleeve is sleeved on the connecting rod 7 and is threadedly connected to the connecting rod 7. When the sleeve is screwed downward, the upper end of the connecting rod 7 is squeezed to make the opening at the upper end smaller so as to fix the protrusion in the snap-in hole to prevent the telescopic rod 8 from slipping out of the connecting rod 7 when the towing rod 9 is dragged.

[0066] On the basis of the above embodiment, in another technical solution, the drill bit includes a metal head 29 and a closed structure, the longitudinal section of the metal head 29 is a truncated cone, the metal head 29 is a hollow structure, and the closed structure is arranged at the upper end of the metal head 29, and the closed structure includes:

[0067] The connecting tube 13 is a cylindrical structure;

[0068] The upper cylinder 14 is sleeved in the connecting cylinder 13, the inner diameter of the connecting cylinder 13 is larger than the outer diameter of the upper cylinder 14 to form a first receiving chamber 16 between the inner wall of the connecting cylinder 13 and the outer wall of the upper cylinder 14, a first annular convex edge 17 is provided on the outer cylinder wall of the lower end of the upper cylinder 14, a first gap is formed between the first annular convex edge 17 and the inner wall of the connecting cylinder 13, a first connecting plate 26 is provided on the outer cylinder wall of the upper end of the upper cylinder 14, the first connecting plate 26 is respectively connected to the connecting cylinder 13 and the upper cylinder 14 to fix the upper cylinder 14 in the connecting cylinder 13, an annular positioning edge 30 is provided on the inner cylinder wall of the lower end of the upper cylinder, when the tube body is sleeved on the upper cylinder body, the lower end of the tube body abuts against the annular positioning edge 30;

[0069] The lower cylinder 15 is sleeved in the connecting cylinder 13, the inner diameter of the connecting cylinder 13 is larger than the outer diameter of the lower cylinder 15 so as to form a second receiving cavity between the inner wall of the connecting cylinder 13 and the outer wall of the lower cylinder 15, a second annular convex edge is arranged on the outer cylinder wall of the upper end of the lower cylinder 15, a second gap is formed between the second annular convex edge and the inner wall of the connecting cylinder 13, a third gap is arranged between the lower end of the upper cylinder 14 and the upper end of the lower cylinder 15, a second connecting plate 27 is arranged on the outer cylinder wall of the upper end of the lower cylinder 15, and the second connecting plate 27 is respectively connected to the connecting cylinder 13 and the lower cylinder 15 so as to fix the lower cylinder 15 in the connecting cylinder 13;

[0070] The sealing member 28 is made of a rubber material. The upper end of the sealing member 28 is provided with a first annular positioning member 19, and the lower end of the sealing member 28 is provided with a second annular positioning member 20. The upper part of the sealing member 28 is sleeved in the first receiving cavity 16, and the lower part of the sealing member 28 is sleeved in the second receiving cavity. The first annular positioning member 19 and the second annular positioning member 20 are made of uniform elastic rubber material.

[0071] A tensioning structure, comprising an elastic rubber ring 21 and an annular positioning groove 22, wherein the annular positioning groove 22 is arranged in the middle of the connecting tube 13 and is opposite to the third gap, and the elastic rubber ring 21 is sleeved in the annular positioning groove 22;

[0072] The trigger structure includes a plurality of first through holes, two second through holes, a positioning rod 23, a positioning ring 24 and two trigger members 25. The first through holes penetrate the upper groove wall and the lower groove wall of the annular positioning groove 22. The first through holes are arranged on the annular positioning groove 22 at equal intervals along the circumference of the annular positioning groove 22. The positioning rod 23 is sleeved in the first through hole to position the elastic rubber ring 21 in an open state in the annular positioning groove 22. The upper end of the positioning rod 23 is fixedly connected with the positioning ring 24 in an integral manner. The two second through holes are symmetrically arranged on the first connecting plate 26 and penetrate the first connecting plate 26. One end of the trigger member 25 is connected to the positioning ring 24, and the other end penetrates the second through hole and extends to the external space, that is, extends to the top of the connecting tube 13.

[0073] When in use, the lower end of the tube body 1 is sleeved in the upper cylinder 14, and the lower end of the tube body 1 is made to abut against the annular positioning edge 30, the protective cover 2 is sleeved on the upper end of the tube body 1, and the first hanging ear 3 and the second hanging ear 5 are connected by a fixing piece, and the sampler is placed vertically at the sampling point, and the protective cover 2 is tamped to make the drill bit 4 and the tube body 1 enter the sampling layer. After the drill bit 4 reaches the required sampling layer, the two trigger members 25 are pulled upward at the same time, driving the positioning ring 24 and the positioning rod 23 to move upward, and the elastic rubber ring 21 sleeved in the annular positioning groove 22 is in a stretched state, that is, an open state, and due to the loss of the blocking effect of the positioning rod 23, it slides out of the annular positioning groove 22 and shrinks. At this time, the seal The first annular positioning member 19 on the seal 28 slides downward and is engaged in the first annular gap formed by the upper groove wall and the first annular convex edge 17 to seal the first annular gap. The second annular positioning member 20 slides upward and is engaged in the second annular gap formed by the lower groove wall and the second annular convex edge to seal the second annular gap. The elastic rubber ring 21 tightly clamps the middle part of the seal 28 to shrink the middle part of the seal 28, that is, to separate the upper and lower parts of the seal 28. The external lifting device is connected to the fixing member to lift the sampler through the lifting device, and the sampler is placed at an angle in the fixing groove of the auxiliary transportation device, so that the sample can be easily transported out of the swamp.

[0074] On the basis of the above embodiment, in another technical solution, the protection cover 2 is provided with a rod slot corresponding to the second through hole, the trigger member 25 is a trigger rod, and the upper end of the trigger rod is inserted into the rod slot.

[0075] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A portable sediment column sampler, characterized in that: include: The tube body is a cylindrical structure and is made of PVC material; A protective cover, which is detachably arranged on the upper end of the tube body, the protective cover is provided with an air pressure balance hole, and the outer side of the protective cover is provided with a first hanging ear; A drill bit is detachably arranged at the lower end of the tube body, and a second hanging ear corresponding to the first hanging ear is arranged on the outer side of the drill bit; the drill bit comprises a metal head and a closed structure, the longitudinal section of the metal head is a truncated cone, the metal head is a hollow structure, and the closed structure is arranged at the upper end of the metal head, and the closed structure comprises: A connecting cylinder, which is a cylindrical structure; An upper cylinder is sleeved in the connecting cylinder, wherein the inner diameter of the connecting cylinder is larger than the outer diameter of the upper cylinder to form a first receiving cavity between the inner wall of the connecting cylinder and the outer wall of the upper cylinder; A lower cylinder is sleeved in the connecting cylinder, wherein the inner diameter of the connecting cylinder is larger than the outer diameter of the lower cylinder so as to form a second receiving cavity between the inner wall of the connecting cylinder and the outer wall of the lower cylinder; A sealing member, which is made of a rubber material, wherein a first annular positioning member is arranged at the upper end of the sealing member, and a second annular positioning member is arranged at the lower end of the sealing member, wherein the upper portion of the sealing member is sleeved in the first receiving cavity, and the lower portion of the sealing member is sleeved in the second receiving cavity, and the first annular positioning member and the second annular positioning member are made of uniform elastic rubber material; A fixing member, two ends of which are detachably connected to the first hanging ear and the second hanging ear respectively; An auxiliary transportation device, the auxiliary transportation device comprising: A plastic plate, the upper surface of which is provided with a fixing groove for fixing the tube body, the front side and the rear side of one end of the plastic plate are both provided with a connecting rod made of plastic, the connecting rod is a hollow tubular structure, and the plastic plate is a sled plate-like structure; The telescopic rod comprises a front telescopic rod and a rear telescopic rod, wherein the front telescopic rod is slidably sleeved in the front connecting rod, and the rear telescopic rod is slidably sleeved in the rear connecting rod, and the front telescopic rod and the rear telescopic rod are both connected and fixed to the front connecting rod and the rear connecting rod through a clamp structure; A towing rod, one end of which is connected to the front telescopic rod, and the other end of which is connected to the rear telescopic rod. The towing rod is integrally formed with the front telescopic rod and the rear telescopic rod.

2. The portable sediment column sampler according to claim 1, characterized in that: The number of the first hanging ears is 2, and the two first hanging ears are symmetrically arranged on the outside of the protective cover; the number of the second hanging ears is 2, and the two second hanging ears are symmetrically arranged on the outside of the drill bit.

3. The portable sediment column sampler according to claim 1, characterized in that: The front connecting rod and the rear connecting rod are both connected to the plastic plate through a connecting piece, the connecting piece forms an angle of 90-150° with the plane where the plastic plate is located, the connecting piece is a U-shaped groove structure, the connecting piece and the plastic plate are integrally formed, the lower ends of the front connecting rod and the rear connecting rod are both hinged in the groove of the connecting piece, and the opening direction of the groove of the connecting piece is opposite to the plastic plate so that the connecting rod can be rotatably folded on both sides of the plastic plate.

4. The portable sediment column sampler according to claim 1, characterized in that: A canvas baffle is detachably provided between the front connecting rod and the rear connecting rod, the opening direction of the fixing groove is upward, and the bottom of the fixing groove is gradually raised from the right side to the left side to the notch of the fixing groove so that the longitudinal section of the fixing groove is a right triangle.

5. The portable sediment column sampler according to claim 1, characterized in that: The tight hoop structure comprises: Protrusions are arranged at intervals along the length direction of the telescopic rod, and the protrusions are hemispherical structures; A clamping hole, which is arranged on the connecting rod, and the protrusion is detachably clamped in the clamping hole; At least two slots are provided at one end of the connecting rod away from the plastic plate and are arranged along the length direction of the connecting rod, and an external thread is provided on the outer side of the end of the connecting rod away from the plastic plate; The sleeve is provided with an internal thread inside so that the connecting rod is threadedly connected to the sleeve. The diameter of the upper end of the sleeve is smaller than the diameter of the lower end so that the sleeve is tightened downward to position the protrusion in the clamping hole.

6. The portable sediment column sampler according to claim 1, characterized in that: A first annular convex edge is arranged on the outer wall of the lower end of the upper cylinder, and a first gap is formed between the first annular convex edge and the inner wall of the connecting cylinder. A first connecting plate is arranged on the outer wall of the upper end of the upper cylinder, and the first connecting plate is respectively connected to the connecting cylinder and the upper cylinder to fix the upper cylinder in the connecting cylinder. An annular positioning edge is arranged on the inner wall of the lower end of the upper cylinder, and when the tube body is sleeved on the upper cylinder, the lower end of the tube body abuts against the annular positioning edge. A second annular convex edge is arranged on the outer wall of the upper end of the lower cylinder, a second gap is formed between the second annular convex edge and the inner wall of the connecting cylinder, a third gap is arranged between the lower end of the upper cylinder and the upper end of the lower cylinder, a second connecting plate is arranged on the outer wall of the upper end of the lower cylinder, and the second connecting plate is respectively connected to the connecting cylinder and the lower cylinder to fix the lower cylinder in the connecting cylinder; A tensioning structure, comprising an elastic rubber ring and an annular positioning groove, wherein the annular positioning groove is arranged in the middle of the connecting tube and is opposite to the third gap, and the elastic rubber ring is sleeved in the annular positioning groove; A trigger structure, which includes a plurality of first through holes, two second through holes, a positioning rod, a positioning ring and a trigger member, wherein the first through holes penetrate the upper groove wall and the lower groove wall of the annular positioning groove, the first through holes are arranged on the annular positioning groove at equal intervals along the circumference of the annular positioning groove, the positioning rod is sleeved in the first through hole to position the elastic rubber ring in an open state in the annular positioning groove, the upper end of the positioning rod is fixedly connected with the positioning ring in an integral form, the two second through holes are symmetrically arranged on the first connecting plate and penetrate the first connecting plate, one end of the trigger member is connected to the positioning ring, and the other end penetrates the second through hole and extends to the external space.

7. The portable sediment column sampler according to claim 6, characterized in that: The protection cover is provided with a rod slot hole corresponding to the second through hole, the trigger member is a trigger rod, and the upper end of the trigger rod is inserted into the rod slot hole.

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