Quantitative sampling device for benthonic animals in mudflat wetland

Abstract

The invention discloses a beach wetland benthonic animal quantitative sampling device, and relates to the field of sampling devices.The beach wetland benthonic animal quantitative sampling device comprises a handle, a connecting rod, a quantitative sampling frame and a spiral sampler, the spiral sampler comprises a sampling rod and a sampler body, and the sampler body is arranged to be a spiral plate and fixedly connected to the peripheral face of the bottom of the sampling rod; the outer diameter of the sampler main body is matched with the inner cavity of the quantitative sampling frame; and the top end of the sampling rod is detachably connected with the handle through a connecting rod. The device is ingenious in conception and compact and reasonable in structure, and the handle, the connecting rod and the spiral sampler are detachably connected, so that the device is convenient to carry and use; the spiral sampler can be used for taking out the whole sample in the quantitative sampling frame without digging out the whole quantitative sampling frame, so that the workload in the sampling process is reduced; and after the whole body is taken out, stratified sampling of benthonic animal samples can be realized according to height measurement of the spiral plate.

Description

Technical Field

[0001] The invention relates to the field of sampling devices, in particular to a quantitative sampling device for benthic animals in tidal flat wetlands. Background Art

[0002] like Figure 2-5 As shown in Figure 1, there are three main types of benthic animal sampling devices: Figure 2 The first category is the drawer type, which can achieve stratified sampling per unit area, but it is difficult to take out the sample as a whole. The sampler needs to be dug out as a whole before stratified sampling; Figure 3-4 The second largest type of frame structure is shown in Figure 1, which can achieve sampling per unit area, but it is also difficult to take samples out of the tidal flat. The sampler needs to be dug out as a whole, and stratified sampling cannot be achieved. Figure 5 The third category shown is a grab bucket structure. For details, please refer to the national utility model patent with patent number 202121287353.6. Similar structures can also refer to the utility model patent with patent number 202021873933.9. Although this type of device can easily remove tidal flat samples, it is difficult to achieve sampling per unit area, and it is difficult to stratify the removed samples.

[0003] How to develop an easy-to-operate quantitative sampling device for tidal flat wetland benthic animals to achieve the collection and stratification of tidal flat wetland benthic animal samples has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a quantitative sampling device for benthic animals in tidal flat wetlands, which adopts a spiral progressive method, which is convenient for the collection of tidal flat wetland samples and the subsequent stratification processing.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The invention discloses a quantitative sampling device for benthic animals in a tidal flat wetland, comprising a handle, a connecting rod, a quantitative sampling frame and a spiral sampler, wherein the spiral sampler comprises a sampling rod and a sampler body, wherein the sampler body is arranged as a spiral plate and is fixedly connected to the outer peripheral surface of the bottom of the sampling rod, and the outer diameter of the sampler body matches the inner cavity of the quantitative sampling frame; the top end of the sampling rod is detachably connected to the handle through the connecting rod;

[0007] When in use, first insert the quantitative sampling frame into the underground of the area to be sampled, keep the top surface flush with the ground, then rotate the handle to drive the sampler downward through the connecting rod, rotate the benthic sample to the spiral sampler, and after rotating to the sampling depth, pull out the spiral sampler upward to obtain benthic samples at different depths.

[0008] Preferably, the quantitative sampling frame includes a quantitative sampling frame pedal and a quantitative sampling frame, the quantitative sampling frame pedal is fixedly connected to the outside of the top edge of the quantitative sampling frame, the outer contour of the sampler body matches the inner cavity of the quantitative sampling frame, and the sampler body is movably disposed in the inner cavity of the quantitative sampling frame.

[0009] Preferably, the quantitative sampling frame pedal and the quantitative sampling frame are integrally formed or welded together.

[0010] Preferably, the bottom edge of the quantitative sampling frame is configured as a bevel for easy insertion.

[0011] Preferably, the handle includes a horizontal rod and a first threaded connecting section, the first threaded connecting section is fixedly connected to the middle of the bottom of the horizontal rod, the first threaded connecting section is threadedly connected to the top of the connecting rod, the bottom end of the connecting rod is set to a second threaded connecting section, and the second threaded connecting section is threadedly connected to the top of the sampling rod.

[0012] Preferably, both ends of the horizontal rod of the handle are covered with non-slip flexible sleeves.

[0013] Preferably, scale lines are marked on the side walls of the sampling rod and the connecting rod, the starting zero point of the scale lines is set at the bottom end of the sampling rod, and after the sampling rod and the connecting rod are connected, the scale values ​​are aligned and continue to extend upward.

[0014] Preferably, the bottom end of the sampling rod is configured to be conical.

[0015] Preferably, the quantitative sampling frame is designed to be cylindrical, and the quantitative sampling frame pedal is designed to be annular or two symmetrical outer edge plates.

[0016] Preferably, the handle includes a horizontal rod and a first connecting section, the first connecting section is fixedly connected to the middle of the bottom of the horizontal rod, the first connecting section is embedded in the top positioning groove of the connecting rod and is positioned by a horizontal pin, the bottom end of the connecting rod is set as a second connecting section, the second connecting section is embedded in the top positioning groove of the sampling rod and is positioned by a horizontal pin.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are:

[0018] The invention discloses a device for quantitative sampling of benthic animals in tidal flat wetlands, comprising a handle, a connecting rod and a spiral sampler which are threadedly connected together, and a quantitative sampling frame for positioning, wherein the quantitative sampling frame is cylindrical to ensure that the sampling area and depth meet the monitoring requirements of benthic animals, and the quantitative sampling frame is provided with a pedal on the top edge to facilitate vertical fixing operation; after the quantitative sampling frame is fixed, the spiral sampler is placed in the inner cavity of the quantitative sampling frame, and the connecting rod and the spiral sampler are driven to rotate synchronously and move downward by rotating the handle, so that the benthic sample is rotated into the spiral sampler and automatically layered, and after rotating to the sampling depth, the spiral sampler is pulled out to obtain benthic samples of different depths on the ground, thereby realizing layered sampling quickly and conveniently.

[0019] The present invention has an ingenious concept and a compact and reasonable structure. The handle, connecting rod and spiral sampler are detachably connected, which is convenient for carrying and use. The spiral sampler can take out the sample in the quantitative sampling frame as a whole without digging out the quantitative frame as a whole, thereby reducing the workload during the sampling process. After the whole is taken out, it can be measured according to the height of the spiral plate to realize stratified sampling of benthic animal samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of a quantitative sampling device for benthic animals in tidal flat wetlands of the present invention;

[0022] Figure 2 It is a schematic diagram of the prior art structure;

[0023] Figure 3 Schematic diagram of the prior art structure 2 Figure 1 ;

[0024] Figure 4 Schematic diagram of the prior art structure 2 Figure 2 ;

[0025] Figure 5 Schematic diagram of the prior art structure 3.

[0026] Explanation of the accompanying drawings: 1. handle; 2. first threaded connection section; 3. connecting rod; 4. second threaded connection section; 5. sampling rod; 6. quantitative sampling frame pedal; 7. quantitative sampling frame body; 8. sampler body. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] like Figure 1 As shown, a quantitative sampling device for benthic animals in tidal flat wetlands comprises a handle 1, a connecting rod 3, a quantitative sampling frame and a spiral sampler, wherein the spiral sampler comprises a sampling rod 5 and a sampler body 8, wherein the sampler body 8 is configured as a spiral plate and is fixedly connected to the outer peripheral surface of the bottom of the sampling rod 5, and the outer diameter of the sampler body 8 matches the inner cavity of the quantitative sampling frame; the top end of the sampling rod 5 is detachably connected to the handle 1 through the connecting rod 3;

[0029] When in use, first insert the quantitative sampling frame into the underground of the area to be sampled, keep the top surface flush with the ground, then rotate the handle 1 to drive the sampler downward through the connecting rod 3, rotate the benthic sample to the spiral sampler, and after rotating to the sampling depth, pull out the spiral sampler upward to obtain benthic samples of different depths. Specifically, when pulling upward after sampling, you can pull it directly, or you can pull it upward while rotating, until the sampler body 8 leaves the quantitative sampling frame 7 with the sample. The spiral sampler can take out the sample in the quantitative sampling frame as a whole without digging out the quantitative frame as a whole, reducing the workload during the sampling process; and after the whole is taken out, it can be measured according to the height of the spiral plate to achieve stratified sampling of benthic animal samples.

[0030] Specifically, the quantitative sampling frame includes a quantitative sampling frame pedal 6 and a quantitative sampling frame 7, the quantitative sampling frame pedal 6 is fixedly connected to the outside of the top edge of the quantitative sampling frame 7, the outer contour of the sampler body 8 matches the inner cavity of the quantitative sampling frame 7, and the sampler body 8 is movably arranged in the inner cavity of the quantitative sampling frame 7. Among them, the quantitative sampling frame 7 is designed to be cylindrical, and the quantitative sampling frame pedal 6 is designed to be annular or two symmetrical outer edge plates, and the width of the annular or two symmetrical outer edge plates is adapted to the width of the adult's foot, which is convenient for stepping on and positioning. Specifically, the quantitative sampling frame pedal 6 and the quantitative sampling frame 7 can be integrally formed by injection molding when plastic materials are used, and can be welded together when metal plate materials are used. Specifically, the quantitative sampling frame 7 needs to ensure that the sampling area and depth meet the requirements of benthic animal monitoring, generally requiring an area of ​​0.0625 square meters and a depth of 30 centimeters. In one specific embodiment, the diameter of the quantitative sampling frame 7 is set to 28.21 centimeters and the height is set to 30 to 40 centimeters. The selection of this height is convenient for the fixed spiral sampler to sample vertically.

[0031] Specifically, the bottom edge of the quantitative sampling frame 7 is set as a bevel for easy insertion, and inserting downward into the ground is more labor-saving and quick. The slope of the bevel can be the inside or the outside. It is preferred to set the outside as the bevel for easy processing.

[0032] In one specific embodiment, the handle 1 includes a horizontal rod and a first threaded connection section 2, the first threaded connection section 2 is fixedly connected to the middle of the bottom of the horizontal rod, the first threaded connection section 2 is threadedly connected to the top of the connecting rod 3, the bottom end of the connecting rod 3 is set to a second threaded connection section 4, and the second threaded connection section 4 is threadedly connected to the top of the sampling rod 5. The first threaded connection section 2 and the second threaded connection section 4 have the same rotation direction. The handle, the connecting rod and the spiral sampler are detachably connected, and when not in use, they take up little space when disassembled, are easy to carry, and can be quickly assembled together when in use.

[0033] Specifically, both ends of the horizontal rod of the handle 1 are covered with non-slip flexible sleeves, which make it more comfortable and convenient for the operator to grip and not easy to slip out of the hand, and are convenient for hand gripping, force application and lifting operations during sampling.

[0034] Specifically, the sampling rod 5 and the connecting rod 3 are marked with scale lines on their side walls, the starting zero point of the scale lines is set at the bottom end of the sampling rod 5, and the scale values ​​of the sampling rod 5 and the connecting rod 3 are aligned after they are connected, and then continue to extend upward. The setting of the scale lines facilitates the measurement of the sampling depth.

[0035] Specifically, the bottom end of the sampling rod 5 is configured to be conical, so as to facilitate downward positioning and faster downward movement during rotation.

[0036] In another embodiment, the handle 1 includes a horizontal rod and a first connecting section, the first connecting section is fixedly connected to the middle of the bottom of the horizontal rod, the first connecting section is embedded in the top positioning groove of the connecting rod 3 and positioned by a horizontal pin, the bottom end of the connecting rod 3 is set as a second connecting section, the second connecting section is embedded in the top positioning groove of the sampling rod 5 and positioned by a horizontal pin. The handle, the connecting rod and the spiral sampler are connected by pins, and when not in use, they are disassembled to occupy a small space, are easy to carry, and can be quickly assembled together when in use.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A quantitative sampling device for benthic animals in tidal flats and wetlands, characterized in that: The invention comprises a handle (1), a connecting rod (3), a quantitative sampling frame and a spiral sampler, wherein the spiral sampler comprises a sampling rod (5) and a sampler body (8), wherein the sampler body (8) is arranged as a spiral plate and is fixedly connected to the outer peripheral surface of the bottom of the sampling rod (5), and the outer diameter of the sampler body (8) matches the inner cavity of the quantitative sampling frame; the top end of the sampling rod (5) is detachably connected to the handle (1) through the connecting rod (3); When in use, the quantitative sampling frame is first inserted into the underground of the area to be sampled, keeping the top surface flush with the ground, and then the handle (1) is rotated to drive the sampler downward through the connecting rod (3), and the benthic sample is rotated to the spiral sampler. After rotating to the sampling depth, the spiral sampler is pulled out upward to obtain benthic samples at different depths.

2. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 1, characterized in that: The quantitative sampling frame comprises a quantitative sampling frame pedal (6) and a quantitative sampling frame (7), wherein the quantitative sampling frame pedal (6) is fixedly connected to the outer side of the top edge of the quantitative sampling frame (7), the outer contour of the sampler body (8) matches the inner cavity of the quantitative sampling frame (7), and the sampler body (8) is movably arranged in the inner cavity of the quantitative sampling frame (7).

3. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 2, characterized in that: The quantitative sampling frame pedal (6) and the quantitative sampling frame (7) are integrally formed or welded together.

4. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 2, characterized in that: The bottom edge of the quantitative sampling frame (7) is arranged as a beveled edge for easy insertion.

5. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 1, characterized in that: The handle (1) comprises a horizontal rod and a first threaded connection section (2), wherein the first threaded connection section (2) is fixedly connected to the middle of the bottom of the horizontal rod, the first threaded connection section (2) is threadedly connected to the top end of the connecting rod (3), the bottom end of the connecting rod (3) is arranged as a second threaded connection section (4), and the second threaded connection section (4) is threadedly connected to the top end of the sampling rod (5).

6. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 5, characterized in that: Both ends of the horizontal rod of the handle (1) are sleeved with anti-slip flexible sleeves.

7. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 1, characterized in that: The side walls of the sampling rod (5) and the connecting rod (3) are marked with scale lines, the starting zero point of the scale lines is set at the bottom end of the sampling rod (5), and after the sampling rod (5) and the connecting rod (3) are connected, the scale values ​​are aligned and continue to extend upward.

8. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 7, characterized in that: The bottom end of the sampling rod (5) is configured to be conical.

9. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 2, characterized in that: The quantitative sampling frame (7) is designed to be cylindrical, and the quantitative sampling frame pedal (6) is designed to be annular or to have two symmetrical outer edge plates.

10. The device for quantitative sampling of benthic animals in tidal flats and wetlands according to claim 1, characterized in that: The handle (1) comprises a horizontal rod and a first connecting section, wherein the first connecting section is fixedly connected to the middle of the bottom of the horizontal rod, the first connecting section is embedded in the top positioning groove of the connecting rod (3) and positioned by a horizontal pin, the bottom end of the connecting rod (3) is arranged as a second connecting section, and the second connecting section is embedded in the top positioning groove of the sampling rod (5) and positioned by a horizontal pin.

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