Sampling support and sampling device for collecting large benthonic animals

Abstract

The utility model provides a sampling support and a sampling device for collecting large benthonic animals, which are used for solving the problem that a net opening of a triangular trawl net does not sink to the bottom of a river when the large benthonic animals are collected in the prior art, and comprise a sleeve type sampling rod and a triangular net opening support enclosed by three connecting rods, a dragging rope fixing ring is arranged at the joint of every two connecting rods of three connecting rods of a triangular net opening support, a fixing piece used for being connected with a sleeve type sampling rod is arranged in the center of the bottom connecting rod of the triangular net opening support, and the sleeve type sampling rod is arranged. According to the sampling device for the large benthonic animals, the sleeve type sampling rod can be pressed to ensure that all the sampling devices sink to the bottoms of rivers which are different in water depth and cannot wade, and then it is ensured that ideal samples can be collected when the large benthonic animals are collected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to aquatic ecology monitoring field, especially, relate to a kind of for collecting large benthos sampling support and sampling device. BACKGROUND

[0002] Large benthos is the invertebrate of life history all or at least one period inhabiting in the surface or matrix of water body bottom and cannot pass through 425 μm (40 mesh) animal, mainly refers to the flat animal, linear animal, annelid, mollusk, arthropod etc. group. Since large benthos living environment is stable, mobile ability is poor, species is diverse and is closely related to surrounding environment quality, therefore, often as the indicating organism indicating environmental quality.

[0003] In order to effectively obtain large benthos in water body, currently developed D type net, super net, kick net, triangular trawl net, peterson mud sampler etc. sampling tool, wherein D type net, super net, kick net are mainly suitable for shallow stream type water body that can be waded through;Triangular trawl net, peterson mud sampler are suitable for large water body with deep water depth, which cannot be waded. Triangular trawl net is important net for semi-quantitative collection of large benthos in non-wading river, and plays an irreplaceable role for understanding species diversity of large benthos in the region.

[0004] However, when triangular trawl net is used to collect large benthos in non-wading river with fast water flow, it is often difficult to collect ideal samples of large benthos at the bottom of the river. The main reason is that the mouth of the triangular trawl net does not sink to the bottom of the river. In the prior art, a stainless steel block is added to the mouth of the triangular trawl net to sink the mouth to the bottom of the river. Although this method can sink the triangular trawl net to the bottom of the river before the ship drags it to collect large benthos, the mouth will float up during the collection process due to the dragging force of the ship, i.e. the mouth does not sink to the bottom of the river, resulting in that ideal samples cannot be collected. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a sampling support and sampling device for collecting large benthos, to solve the problem that the mouth of the triangular trawl net does not sink to the bottom of the river during the collection of large benthos in the prior art.

[0006] To achieve the above object and other related objects, the utility model provides a kind of for collecting large benthos sampling support, comprising: sleeve type sampling rod and by three connecting rods are enclosed to form triangular mesh mouth support;The connecting place between every two connecting rods of the three connecting rods of triangular mesh mouth support is respectively provided with one tow rope fixing ring, and the center position of the bottom connecting rod of triangular mesh mouth is provided with the fixing piece for being connected with sleeve type sampling rod;First threaded hole is provided on the fixing piece, and one end of sleeve type sampling rod is provided with first threaded connection part for being connected with the first threaded hole of fixing piece;When using, sleeve type sampling rod is connected with first threaded hole by passing through the tow rope fixing ring arranged at the top of triangular mesh mouth support, and triangular mesh mouth support is sunk to the bottom of river by pressing the end of sleeve type sampling rod away from first threaded hole.

[0007] Optionally, the sleeve type sampling rod includes a first sampling rod and a second sampling rod, the first threaded connection part is arranged at one end of the first sampling rod, and the other end of the first sampling rod is detachably connected with the second sampling rod.

[0008] Optionally, the first sampling rod is threadedly connected with the second sampling rod.

[0009] Optionally, the connecting end of the first sampling rod and the second sampling rod is provided with a second threaded connection part, the connecting end of the second sampling rod is provided with a second threaded hole for being connected with the second threaded connection part, or the connecting end of the first sampling rod and the second sampling rod is provided with a second threaded hole, and the connecting end of the second sampling rod is provided with a second threaded connection part for being connected with the second threaded hole.

[0010] Optionally, a plurality of spade tongues are arranged on the bottom connecting rod of the triangular mesh mouth.

[0011] Optionally, the sampling support further includes a triangular mesh tail support formed by three connecting rods and three connecting rods for connecting the triangular mesh mouth support and the triangular mesh tail support, one end of the connecting rod is connected with the triangular mesh tail support, and the other end is connected with the triangular mesh mouth support.

[0012] Optionally, the sampling support further includes a plurality of counterweights, the counterweight is provided with a third threaded hole, and the outer side surface of the connecting rod is provided with a thread for being connected with the third threaded hole.

[0013] Optionally, the connecting rod includes a first connecting rod and a second connecting rod, one end of the first connecting rod is detachably connected with the triangular mesh mouth support, the other end is detachably connected with the second connecting rod, and the end of the second connecting rod away from the first connecting rod is detachably connected with the triangular mesh tail support.

[0014] In another aspect, the utility model still provides a kind of sampling device for collecting macrobenthos, including the sampling support for collecting macrobenthos as described above;It further includes mesh bag, and mesh bag is sleeved on the outside of sampling support.

[0015] Optionally, the mesh bag is connected with the triangular mesh opening support through a zipper.

[0016] As described above, the utility model discloses a kind of sampling support for collecting macrobenthos and sampling device, at least with the following beneficial effects: by being provided with one tow rope fixing ring at the connecting place between every two connecting rods of the three connecting rods of triangular mesh opening support respectively, the center position of the bottom connecting rod of triangular mesh opening is provided with the fixing piece for being connected with sleeve type sampling rod, and setting sleeve type sampling rod, when being aimed at different water depth of non-wading river, all can be ensured to sink sampling device to the bottom of river by pressing sleeve type sampling rod, to ensure that when collecting macrobenthos, ideal sample can be collected. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is shown as the structure diagram of the sampling device for collecting macrobenthos of the utility model.

[0018] Fig. 2 It is shown as the structure diagram of the triangular mesh opening support of the sampling device for collecting macrobenthos of the utility model.

[0019] Fig. 3 It is shown as the structure diagram of the first sampling rod and the second sampling rod of the sampling device for collecting macrobenthos of the utility model. DETAILED DESCRIPTION

[0020] The following is by specific embodiment to illustrate the embodiment of the utility model, person skilled in the art can be easily understood from the content disclosed in the present specification Other advantages and effects of the utility model.

[0021] Please refer to all the following drawings. It should be understood that the structures, proportions, sizes and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the implementation of the present application. The modification of any structure, the change of the proportional relationship or the adjustment of the size, without affecting the function and the purpose of the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship is also considered as the implementation of the present application without changing the technical content.

[0022] The following embodiments are only for illustration. Various embodiments can be combined, which are not limited to the content shown in the following single embodiment.

[0023] Please refer to Figs. 1-3 The present application provides a sampling support for collecting macrobenthos, which comprises a sleeve type sampling rod 1 and a triangular net mouth support 2 formed by three connecting rods; a drag rope fixing ring 3 is arranged at the connection between each two connecting rods of the three connecting rods of the triangular net mouth support 2, and a fixing part 4 for connecting with the sleeve type sampling rod 1 is arranged at the center position of the bottom connecting rod of the triangular net mouth; a first threaded hole 41 is arranged on the fixing part 4, and a first threaded connecting part 111 for connecting with the first threaded hole 41 of the fixing part 4 is arranged at one end of the sleeve type sampling rod 1; in use, the sleeve type sampling rod 1 is connected with the first threaded hole by passing through the drag rope fixing ring 3 arranged at the top of the triangular net mouth support 2, and the triangular net mouth support 2 is sunk to the bottom of the river by pressing the end of the sleeve type sampling rod 1 away from the first threaded hole. Specifically, the three connecting rods can be defined as two side connecting rods and a bottom connecting rod, a drag rope fixing ring 3 for fixing the drag rope is arranged at the connecting end of the two side connecting rods, and the two ends of the bottom connecting rod are connected with one of the side connecting rods, and a drag rope fixing ring 3 for fixing the drag rope is arranged at the connecting position. After the fixing part 4 is arranged at the center position of the bottom connecting rod, the center line of the first threaded hole 41 is coaxial with the center line of the drag rope fixing ring 3 arranged at the connecting end of the two side connecting rods, so as to facilitate the connection of the sleeve type sampling rod 1 with the fixing part 4 by passing through the drag rope fixing ring 3. In an embodiment, the fixing part 4 and the drag rope fixing ring 3 can be triangular block structures respectively, so as to reduce the resistance between the fixing part 4, the drag rope fixing ring 3 and water when the macrobenthos is collected, and facilitate the dragging of the sampling device by the ship.

[0024] In an embodiment, the telescopic sampling rod 1 comprises a first sampling rod 11 and a second sampling rod 12, a first threaded connection 111 is arranged at one end of the first sampling rod 11, and the other end of the first sampling rod 11 is detachably connected with the second sampling rod 12. By detachably connecting the first sampling rod 11 and the second sampling rod 12, the second sampling rod 12 can be assembled on or detached from the first sampling rod 11 for different water depths, so as to adapt to different water depths and facilitate sampling of macrobenthos. It can be understood that the second sampling rod 12 can be multiple, and in addition, the lengths of the multiple second sampling rods 12 can also be different to cope with rivers of different water depths.

[0025] In an implementation, the first sampling rod 11 and the second sampling rod 12 are connected by threads. Specifically, the connecting end of the first sampling rod 11 and the second sampling rod 12 can be provided with a second threaded connection 121, and the connecting end of the second sampling rod 12 can be provided with a second threaded hole for connecting with the second threaded connection 121; or, the connecting end of the first sampling rod 11 and the second sampling rod 12 is provided with a second threaded hole, and the connecting end of the second sampling rod 12 is provided with a second threaded connection 121 for connecting with the second threaded hole. Of course, in other implementations, the first sampling tube and the second sampling tube can also be connected by clamping or other forms, which are not limited in the embodiment. The embodiment connects by threads, which can ensure that the first sampling rod 11 and the second sampling rod 12 can be reliably connected after multiple uses.

[0026] In an embodiment, a plurality of spade tongues 5 are arranged on the bottom connecting rod of the triangular net mouth directly. The spade tongue 5 can be a sawtooth structure, which is arranged towards the triangular net mouth support 2 and is inclined downward, so that when collecting macrobenthos, the spade tongue 5 can sink into the bottom mud to collect benthic animals in the bottom mud.

[0027] In an embodiment, the sampling support further comprises a triangular net tail support 6 enclosed by three connecting rods and three connecting rods 7 for connecting the triangular net mouth support 2 and the triangular net tail support 6; one end of the connecting rod 7 is connected with the triangular net tail support 6, and the other end is connected with the triangular net mouth support 2. That is, in the embodiment, the overall shape of the sampling support is a triangular prism structure, so as to prevent the collected macrobenthos from being inactivated due to the tail end of the net bag 9 being gathered.

[0028] In an embodiment, the sampling support further comprises a plurality of counterweights 8, the counterweight 8 is provided with a third threaded hole 81, and the outer side of the connecting rod 7 is provided with a thread for connecting with the third threaded hole 81. Specifically, the counterweight 8 can be a nut structure, which is connected with the connecting rod 7 by threads, and the arrangement of the counterweight 8 ensures that the whole sampling support can sink to the bottom of the river.

[0029] In an embodiment, the connecting rod 7 comprises a first connecting rod 71 and a second connecting rod 72, one end of the first connecting rod 71 is detachably connected with the triangular net mouth support 2, the other end is detachably connected with the second connecting rod 72, and the end of the second connecting rod 72 away from the first connecting rod 71 is detachably connected with the triangular net tail support 6. Specifically, the first connecting rod 71 and the second connecting rod 72, the first connecting rod 71 and the triangular net mouth support 2, and the second connecting rod 72 and the triangular net tail support 6 are connected through threads, so as to increase the sampling device according to different sampling needs.

[0030] In another aspect, the utility model also provides a kind of sampling device for collecting macrobenthos, including a kind of sampling support for collecting macrobenthos as described above;It further includes bag 9, bag 9 is set on the outside of sampling support.In one implementation mode, bag 9 is connected with triangular net mouth support 2 by zipper, so as to install bag 9 on sampling support, and after use, bag 9 is detached from sampling support.In addition, it can also be provided with ribbon, binding rope and other connecting pieces at the connecting place of bag 9 and connecting rod 7, and bag 9 is bound on connecting rod 7, to ensure the stability of the connection of bag 9 and sampling support.

[0031] Principle of use:

[0032] When aiming at the non-wading river with shallow water depth, the sleeve type sampling rod 1 is connected with the first threaded hole through the dragging rope fixing ring 3 arranged at the top of the triangular net mouth support 2, then the sampling device is sunk to the bottom of the river by pressing the sleeve type sampling rod 1, and finally the end of the sleeve type sampling rod 1 away from the triangular net mouth support 2 is fixed on the ship, and the sampling device is pulled by the dragging force of the ship to complete sampling. It can be understood that the sleeve type sampling rod 1 is vertically arranged relative to the horizontal plane at this time, so that the sampling device can always be at the bottom of the river under the action of the sleeve type sampling rod 1 during the dragging process of the ship.

[0033] When aiming at the non-wading river with deep water depth, one end of the three dragging ropes is bound on the dragging rope fixing ring 3 respectively, and the other end is fixed on the ship through the sleeve type sampling rod 1 respectively, and then the sampling device is pulled by the dragging force of the ship to complete sampling. When the sampling device is placed in the river and during the sampling process, the staff can press the sleeve type sampling rod 1, that is, apply pressure to the dragging rope, and then the dragging rope transmits the pressure to the sampling device, so as to ensure that the sampling device is sunk to the bottom of the river.

[0034] The water depth of the non-wadeable river in the embodiment is relatively shallow, and the water depth of the non-wadeable river in the embodiment is relatively deep. The non-wadeable river with a relatively shallow water depth and the non-wadeable river with a relatively deep water depth can be distinguished according to the length of the sleeve sampling rod 1. For example, when the total length of the sleeve sampling rod 1 is 5 meters, the water depth of the non-wadeable river with a relatively shallow water depth is less than 5 meters, and the water depth of the non-wadeable river with a relatively deep water depth is greater than 5 meters. The non-wadeable river with a relatively shallow water depth and the non-wadeable river with a relatively deep water depth can also be distinguished according to the resistance that the sleeve sampling rod 1 can withstand. For example, when the sleeve sampling rod 1 can withstand the resistance of 6 meters of water depth, the non-wadeable river with a relatively shallow water depth is less than 6 meters, and the non-wadeable river with a relatively deep water depth is greater than 6 meters. Of course, the non-wadeable river with a relatively shallow water depth and the non-wadeable river with a relatively deep water depth can also be distinguished in other forms, and the embodiment is not limited in this regard.

[0035] In summary, the utility model discloses a triangular net mouth support 2 is provided with a tow rope fixing ring 3 between every two connecting rods of three connecting rods, and the center position of the bottom connecting rod of the triangular net mouth is provided with a fixing piece 4 for connecting with the sleeve sampling rod 1, and the sleeve sampling rod 1 is arranged, when the non-wadeable river with different water depths is used, the sampling device can be ensured to sink to the bottom of the river by pressing the sleeve sampling rod 1, and ideal samples can be collected when large benthic animals are collected. Therefore, the utility model effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0036] The above embodiment only illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A sampling stand for collecting macrobenthic animals, characterized in that, The sampling bracket includes: a sleeve-type sampling rod and a triangular mesh support formed by three connecting rods; A drag rope fixing ring is provided at the connection point between each pair of the three connecting rods of the triangular mesh support, and a fixing component for connecting with the sleeve-type sampling rod is provided at the center of the bottom connecting rod of the triangular mesh support. The fixing member is provided with a first threaded hole, and one end of the sleeve-type sampling rod is provided with a first threaded connection part for connecting with the first threaded hole of the fixing member; in use, the sleeve-type sampling rod passes through the drag rope fixing ring provided at the top of the triangular mesh support and connects with the first threaded hole, and the triangular mesh support is lowered to the bottom of the river by pressing the end of the sleeve-type sampling rod away from the first threaded hole.

2. The sampling support for collecting macrobenthic animals according to claim 1, characterized in that: The sleeve-type sampling rod includes a first sampling rod and a second sampling rod. The first threaded connection is disposed at one end of the first sampling rod, and the other end of the first sampling rod is detachably connected to the second sampling rod.

3. A sampling support for collecting macrobenthic animals according to claim 2, characterized in that: The first sampling rod and the second sampling rod are threaded together.

4. A sampling support for collecting macrobenthic animals according to claim 3, characterized in that: The first sampling rod and the second sampling rod are provided with a second threaded connection part at the connection end of the first sampling rod and the second sampling rod, and the second sampling rod and the second sampling rod are provided with a second threaded hole for connecting with the second threaded connection part; Alternatively, the connection end between the first sampling rod and the second sampling rod is provided with a second threaded hole, and the connection end between the second sampling rod and the second sampling rod is provided with a second threaded connection part for connecting with the second threaded hole.

5. A sampling support for collecting macrobenthic animals according to claim 1, characterized in that: Multiple spade tongues are provided on the bottom connecting rod directly above the triangular mesh opening.

6. A sampling support for collecting macrobenthic animals according to claim 1, characterized in that: The sampling bracket also includes a triangular mesh tail frame formed by three connecting rods and three connecting rods for connecting the triangular mesh opening bracket and the triangular mesh tail frame; one end of the connecting rod is connected to the triangular mesh tail frame and the other end is connected to the triangular mesh opening bracket.

7. A sampling support for collecting macrobenthic animals according to claim 6, characterized in that: The sampling bracket also includes multiple counterweights, each counterweight having a third threaded hole, and the outer side of the connecting rod having threads for connecting with the third threaded hole.

8. A sampling support for collecting macrobenthic animals according to claim 6, characterized in that: The connecting rod includes a first connecting rod and a second connecting rod. One end of the first connecting rod is detachably connected to the triangular mesh bracket, and the other end is detachably connected to the second connecting rod. The end of the second connecting rod away from the first connecting rod is detachably connected to the triangular mesh tail frame.

9. A sampling device for collecting samples from large benthic animals, characterized in that: The sampling support for collecting large benthic animals is as described in any one of claims 1-8; it also includes a net bag fitted over the outer surface of the sampling support.

10. A sampling device for collecting macrobenthic animals according to claim 9, characterized in that: The mesh bag is connected to the triangular mesh bracket by a zipper.

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