Marine large benthonic animal sorting device and sorting control method thereof

Abstract

The invention relates to the technical field of marine animal sorting equipment, in particular to a marine large benthonic animal sorting device and a sorting control method thereof. The device comprises a containing base, the containing base is in a cube shape, the interior of the containing base is of a shell drawing structure, the top of the containing base is in butt joint with a sorting mechanism, the sorting mechanism comprises a supporting frame with the same shape as the containing base, the lower portion of the supporting frame is fixedly connected with one end of a sorting netting, and the sorting netting is woven by adopting a high polyester fiber material. One end of the sorting netting is in an inverted triangular funnel shape, and the other end of the sorting netting is connected to the edge of the top of the sample collector, so that sorted macrobenthonic animal samples can enter the sample collector through the sorting netting to be stored and placed, and the sample collector is arranged in the shelling space of the containing base. According to the invention, the marine large benthonic animals can be efficiently and conveniently sorted, and the loss of samples is reduced, so that the collection reliability of marine large benthonic animal samples is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of marine animal sorting equipment, and in particular to a marine large benthic animal sorting device and a sorting control method thereof. Background Art

[0002] Large benthic animals refer to animals that are larger than 0.5 mm and live on the surface or bottom of the ocean floor for all or most of their life history. Large benthic animals are an important part of the marine ecosystem. Due to their weak mobility and sensitivity to environmental changes, they are important indicator organisms for evaluating the quality of the marine ecological environment. However, in traditional survey methods, the reliability of large benthic animal survey results is often limited by sampling and sorting equipment. Sorting equipment has a high sample loss rate, especially small large benthic animals such as annelid polychaetes are often entangled in the sieve and difficult to separate, resulting in sample loss, which will lead to an underestimate of marine biodiversity and inaccurate evaluation of the quality of the marine ecological environment.

[0003] At present, the existing marine macrobenthic animal sorting equipment, such as vortex sorters, has problems such as large size, need for power support, and low sorting efficiency, which makes it difficult to apply to complex marine environments. At the same time, the water source used to separate macrobenthic animals from sediments often comes from the natural environment, and the sorting process is easily contaminated by organisms existing in natural water bodies. Therefore, there is an urgent need for an efficient, convenient and reliable marine macrobenthic animal sorting device to improve the efficiency and accuracy of macrobenthic animal surveys. Summary of the invention

[0004] The invention overcomes the shortcomings of the prior art and provides a marine macrobenthic animal sorting device and a sorting control method thereof.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention provides a device for sorting large marine benthic animals, the device comprising a container base:

[0007] The container base is in the shape of a cube and has a draw-out shell structure inside. A sorting mechanism is connected to the top of the container base, and the sorting mechanism includes a supporting frame of the same shape as the container base. One end of a sorting net is connected and fixed to the bottom of the supporting frame. The sorting net is woven with high polyester fiber material and is in the shape of an inverted triangle funnel. The other end of the sorting net is connected to the top edge of the sample collector, so that the sorted large benthic animal samples can pass through the sorting net into the sample collector for storage and placement, and the sample collector is placed in the draw-out shell space of the container base. A placement and sorting device is covered on the support frame of the sorting mechanism.

[0008] Furthermore, in a preferred embodiment of the present invention, the length of the storage base is 40 cm, the width is 40 cm, and the height is 20 cm, and the mesh aperture of the sorting net is set to 0.5 mm.

[0009] Furthermore, in a preferred embodiment of the present invention, the sample collector is made of high polyester fiber material, and the mesh aperture of the sample collector is 0.5 mm.

[0010] Furthermore, in a preferred embodiment of the present invention, the storage and sorting device includes a storage basket, and the storage basket has a length of 40 cm, a width of 40 cm, and a height of 20 cm.

[0011] Furthermore, in a preferred embodiment of the present invention, a circular through hole is formed in the side wall of the storage basket, and a sorting shaft is connected to the circular through hole through a bearing.

[0012] Furthermore, in a preferred embodiment of the present invention, a water pipe fixing device is clamped directly above the storage basket, and the water pipe fixing device includes a water pipe bracket, and the water pipe bracket is detachable. A sleeve column is provided at the front end of the water pipe bracket, and a barrier net is installed at the bottom of the sleeve column. The aperture of the barrier net is 0.5 mm, which is used to isolate organisms from natural water bodies.

[0013] Furthermore, in a preferred embodiment of the present invention, a rotor is provided at one end of the sorting shaft.

[0014] Furthermore, in a preferred embodiment of the present invention, the sorting shaft is installed and fixed at the middle position of a rotatable grid, the grid aperture on the rotatable grid is 2 mm, and the rotatable grid is flush with the bottom edge of the storage basket.

[0015] Furthermore, in a preferred embodiment of the present invention, a buckle is installed on the inner wall of the storage basket, and the buckle is arranged above the side of the rotatable grid to fix the rotatable grid.

[0016] A second aspect of the present invention provides a sorting control method for a marine macrobenthic animal sorting device, which is applied to any one of the marine macrobenthic animal sorting devices described above, and comprises the following steps:

[0017] S1: The rotatable grid is driven to be placed horizontally at the bottom of the storage basket by turning the rotor, the buckle is closed to fix the rotatable grid, and the collected sediment is poured onto the rotatable grid fixed in the storage basket. After the inversion is completed, enter S2;

[0018] S2: The water inlet of the water pipe is placed on the casing column, and the casing column is placed above the rotatable grid by using a water pipe bracket installed on the edge of the storage basket. The water supply device is turned on to allow water to flow from the water pipe into the casing column into the storage basket to flush and sort the sediment on the rotatable grid. The flushing and sorting process enters S3:

[0019] S3: Large marine benthic animals and debris larger than 2 mm are retained in the rotatable grid under the action of water source sorting, and large marine benthic animals and sediment particles smaller than 2 mm fall into the sample collector under the guidance of the sorting net under the action of water source sorting, and enter S4 after washing and sorting;

[0020] S4: The water source continues to flow into the sorting net for continuous flushing to sort the sediment particles of large marine benthic animals and residues larger than 0.5 mm and bottom mud impurities smaller than 0.5 mm that fall into the sample collector. The large marine benthic animals and residues larger than 0.5 mm and sediment particles smaller than 0.5 mm are separated by the water source sorting action, and then enter S5 after the separation is completed;

[0021] S5: Open the buckle and control the rotor to flip the rotatable grid. Large marine benthic animals and residues larger than 2 mm on the rotatable grid are concentrated and guided into the sample collector through the sorting net to complete the sorting and collection.

[0022] The beneficial technical effects of the present invention are:

[0023] Large marine benthic animals are placed on a rotatable grid and flushed with water. At this time, large marine benthic animals smaller than 2mm and larger than 0.5mm will fall into the sample collector, and sediment particles smaller than 0.5mm will be separated from the large marine benthic animals. The rotor is rotated synchronously, thereby driving the sorting shaft to rotate at a uniform speed. At this time, the sorting shaft will drive the rotatable grid to flip to one side. Under the action of water flushing, the benthic animals attached to the rotatable grid in the placement basket will be flipped and flushed to the sorting net. Finally, the benthic animals will fall into the sample collector through the sorting net for temporary storage, thereby realizing the sorting of large marine benthic animals and reducing sample loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is the overall structural diagram of the device;

[0026] Figure 2 It is a schematic diagram of the composition structure of the device;

[0027] Figure 3 It is a schematic diagram of the top view of the storage and sorting mechanism;

[0028] Figure 4 Schematic diagram of the internal structure of the storage and sorting mechanism.

[0029] The following are the descriptions of the reference numerals:

[0030] 101. Container base; 102. Support frame; 103. Sorting net; 104. Sample collector; 105. Storage basket; 106. Sorting shaft; 107. Rotor; 108. Rotatable grid; 109. Water pipe support; 201; Casing column; 202. Barrier net; 203. Buckle. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the structures related to the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0034] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0035] like Figure 1-4 As shown, a first aspect of the present invention provides a marine macrobenthic animal sorting device, the device comprising a container base 101.

[0036] The container base 101 is in the shape of a cube and has a draw-out shell structure inside. A sorting mechanism is docked on the top of the container base 101, and the sorting mechanism includes a support frame 102 of the same shape as the container base 101. One end of a sorting net 103 is connected and fixed to the bottom of the support frame 102. The sorting net 103 is woven with high polyester fiber material and is in the shape of an inverted triangle funnel. The other end of the sorting net 103 is connected to the top edge of the sample collector 104, so that the sorted large benthic animal samples can enter the sample collector 104 through the sorting net 103 for storage and placement, and the sample collector 104 is placed in the draw-out shell space of the container base 101, and a placement sorting device is covered on the support frame 102 of the sorting mechanism.

[0037] It should be noted that during sorting, the target benthic animals fall into the sample collector 104 through the sorting net 103 for temporary storage. The sample collector 104 has a large capacity and can accommodate a certain number of benthic animals of different shapes and sizes. The sorting net 103 and the sample collector 104 made of high polyester material can cope with the activities and storage of some benthic animals with spikes or barbs, preventing them from escaping after scratching the sorting net 103 and the sample collector 104. Compared with traditional materials, it is more solid and durable, reducing the replacement frequency and cost of the sorting net 103 and the sample collector 104. The installation between the sorting device and the sorting mechanism is a detachable setting. When fishing is required, it is only necessary to tighten the support frame 102 on the sorting mechanism to the top of the storage base 101 by bolts, so as to facilitate the removal of the captured large benthic animals from the sample collector, which is fast and efficient, and at the same time achieves the effect of quick disassembly and installation, and improves the cleaning and maintenance quality and efficiency of the device.

[0038] The length of the container base 101 is 40 cm, the width is 40 cm, and the height is 20 cm. The mesh aperture of the sorting net 103 is set to 0.5 mm.

[0039] The sample collector 104 is made of high polyester fiber material, and the mesh aperture of the sample collector 104 is 0.5 mm.

[0040] It should be noted that the size of large marine benthic animals is larger than 0.5 mm, so they can fall into the sample collector 104 through the sorting net 103 for collection and storage. The samples of large marine benthic animals are mainly collected from the sediments in the intertidal zone and subtidal zone. Most of the particles of these sediments are smaller than 0.5 mm. Therefore, under the action of water flow, the aperture setting of the sample collector 104 and the sorting net 103 can wash and sort out the sediment particles smaller than 0.5 mm from the large marine benthic animal samples larger than 0.5 mm, thereby achieving the sorting effect of some large marine benthic animals larger than 0.5 mm and smaller than 2 mm and sediment particles. At the same time, it can also collect the residues larger than 0.5 mm carried in the samples. These residues often hide animal samples that are not easy to be found by the naked eye, thereby ensuring the accuracy of subsequent sample research and analysis.

[0041] The storage and sorting device includes a storage basket 105, and the storage basket 105 has a length of 40 cm, a width of 40 cm, and a height of 20 cm.

[0042] A circular through hole is formed on the side wall of the storage basket 105 , and a sorting shaft 106 is connected to the circular through hole via a bearing.

[0043] A rotor 107 is disposed at one end of the sorting shaft 106 .

[0044] The sorting shaft 106 is installed and fixed at the middle position of a rotatable grid 108 . The grid aperture of the rotatable grid 108 is 2 mm. The rotatable grid 108 is flush with the bottom edge of the storage basket 105 .

[0045] It should be noted that since some large marine benthic animals smaller than 2 mm may be entangled on the rotatable grid and have a certain degree of adhesion, the rotation of the rotor 107 during the flushing process with water source drives the rotor 107 to rotate synchronously, and the rotation of the rotor 107 then drives the sorting shaft 106 to rotate at a uniform speed. The sorting shaft 106 will then drive the rotatable grid 108 to flip to one side, so that the water source can continuously flush the other side of the rotatable grid 108, thereby efficiently flushing large marine benthic animals with strong adhesion into the sample collector, thereby achieving a sorting buffer effect by flipping the rotatable grid 108, effectively reducing the loss of large marine benthic animal samples and ensuring the authenticity of the samples.

[0046] It should be noted that the large benthic marine animal samples collected in the field are of different sizes. The size of some large benthic animals can reach more than 2 mm, while the size of some large benthic animals is less than 2 mm and greater than 0.5 mm. Therefore, the 2mm aperture setting on the rotatable grid 108 is used to sort the large benthic marine animals smaller than 2 mm by water flow flushing, so that the large benthic animals larger than 2 mm remain on the rotatable grid 108, while the large benthic animals smaller than 2 mm fall into the sorting net 103 and the sample collector 104 at the bottom, and the sediment particles smaller than 2 mm can be brought into them, thereby achieving the preliminary sorting effect of large benthic marine animals of different sizes and bottom mud impurities, which can replace the steps of manually separating benthic animals of different sizes, and provide extremely high convenience and accuracy for the subsequent sample research of benthic animals of different sizes, so that the acquisition of large benthic animal samples of different sizes is faster, more efficient and more reliable.

[0047] A water pipe fixing device is clamped just above the storage basket 105, and the water pipe fixing device includes a water pipe bracket 109. The water pipe bracket 109 is detachable, and a sleeve column 201 is arranged at the front end of the water pipe bracket 109. A barrier net 202 is installed at the bottom of the sleeve column 201. The aperture of the barrier net 202 is 0.5 mm, which is used to isolate organisms from natural water bodies.

[0048] A buckle 203 is installed on the inner wall of the storage basket 105 . The buckle 203 is arranged above the rotatable grid 108 and is used to fix the rotatable grid 108 .

[0049] It should be noted that the large marine benthic animals collected in the wild live in sediments and can be separated by flushing with water flow. However, the extraction resources of water sources in the wild are limited. It is usually necessary to connect a water pipe from a nearby water source to introduce the water source into the storage basket 105 for flushing, and the sampling personnel need to continuously hold the water pipe for flushing, which will cause muscle soreness and fatigue for a long time and affect the quality of sample flushing and sorting. Therefore, the sleeve column can be used for the sleeve of the water pipe inlet, so that the water pipe is fixed on the top of the storage basket 105, and the fixed flushing and sorting of the water flow is realized, which replaces the hand-held flushing steps of the staff, saves time and effort, and improves the flushing and sorting efficiency and quality of the large marine benthic animal samples; at the same time, a groove is opened in the middle of the water pipe bracket 109, which is clamped on the edge of the storage basket 105 through the groove, so that the water pipe fixing device can be disassembled and fixedly installed, optimizing the flushing and sorting range and sorting convenience of the device for large marine benthic animal samples. Since the nearby water source may contain exogenous marine animals, these animals may enter the storage basket 105 through the water pipe and mix with the marine macrobenthic animal sample, thereby causing contamination of the marine macrobenthic animal sample. Therefore, the barrier net 202 is provided to further block these marine animals from flowing into the storage basket along with the water flow, thereby preventing exogenous marine organisms from mixing with the marine macrobenthic animal sample and improving the purity of the sample.

[0050] It should be noted that, since the rotatable grid 108 is connected and supported by only one sorting shaft 106, when the weight of the sediment collected in the field is large, it may cause the rotatable grid 108 to be difficult to maintain balance, causing the rotatable grid 108 to automatically flip to one side before being washed and sorted by water flow, causing the sorting of large marine benthic animal samples to fail, and easily contaminating the large marine benthic animal samples. In this regard, by setting a buckle 203 to fix one side of the rotatable grid 108, it can be avoided that the sediment is inverted on the rotatable grid 108, causing it to automatically flip to one side, thereby improving the stability and rigor of sample sorting, thereby further reducing the failure rate and contamination rate of sample sorting.

[0051] A second aspect of the present invention provides a sorting control method for a marine macrobenthic animal sorting device, which is applied to any one of the marine macrobenthic animal sorting devices described above, and comprises the following steps:

[0052] S1: The rotatable grid is driven to be placed horizontally at the bottom of the storage basket by turning the rotor, the buckle is closed to fix the rotatable grid, and the collected sediment is poured onto the rotatable grid fixed in the storage basket. After the inversion is completed, enter S2;

[0053] S2: The water inlet of the water pipe is placed on the casing column, and the casing column is placed above the rotatable grid by using a water pipe bracket installed on the edge of the storage basket. The water supply device is turned on to allow water to flow from the water pipe into the casing column into the storage basket to flush and sort the sediment on the rotatable grid. The flushing and sorting process enters S3:

[0054] S3: Large marine benthic animals and debris larger than 2 mm are retained in the rotatable grid under the action of water source sorting, and large marine benthic animals and sediment particles smaller than 2 mm fall into the sample collector under the guidance of the sorting net under the action of water source sorting, and enter S4 after washing and sorting;

[0055] S4: The water source continues to flow into the sorting net for continuous flushing to sort the sediment particles of large marine benthic animals and residues larger than 0.5 mm and bottom mud impurities smaller than 0.5 mm that fall into the sample collector. The large marine benthic animals and residues larger than 0.5 mm and sediment particles smaller than 0.5 mm are separated by the water source sorting action, and then enter S5 after the separation is completed;

[0056] S5: Open the buckle and control the rotor to flip the rotatable grid. Large marine benthic animals and residues larger than 2 mm on the rotatable grid are concentrated and guided into the sample collector through the sorting net to complete the sorting and collection.

[0057] It should be noted that the samples of large marine benthic animals collected in the field include large species, such as starfish, sea urchins and sea cucumbers larger than 2 mm, and small species, such as hook shrimps, sandworms and oligochaetes larger than 0.5 mm and smaller than 2 mm. In order to facilitate the research and analysis of these benthic animal species of different sizes, it is necessary to sort the collected samples. Therefore, a rotatable grid fixed by a closed buckle is used to achieve the initial sorting of benthic animals smaller than 2 mm and larger than 0.5 mm. In addition, large benthic animal samples collected in the field are usually mixed with a large amount of organic debris, small particles of sand and gravel, and micro-benthic animals smaller than 0.5 mm. These large amounts of organic debris, small particles of sand and gravel, and micro-benthic animals can be sorted and removed together through the rotatable grid, the sorting net, and the aperture on the sample collector by flushing with water from an external tap, which meets the sorting needs of large marine benthic animal samples collected in the field and makes the sorting more accurate and efficient.

[0058] The above is based on the ideal embodiment of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A device for sorting large marine benthic animals, comprising a container base, characterized in that: The container base is in the shape of a cube and has a draw-out shell structure inside. A sorting mechanism is connected to the top of the container base, and the sorting mechanism includes a supporting frame of the same shape as the container base. One end of a sorting net is connected and fixed to the bottom of the supporting frame. The sorting net is woven with high polyester fiber material and is in the shape of an inverted triangle funnel. The other end of the sorting net is connected to the top edge of the sample collector, so that the sorted large benthic animal samples can pass through the sorting net into the sample collector for storage and placement, and the sample collector is placed in the draw-out shell space of the container base. A placement and sorting device is covered on the support frame of the sorting mechanism.

2. A marine macrobenthic animal sorting device according to claim 1, characterized in that: The length of the holding base is 40 cm, the width is 40 cm, and the height is 20 cm. The mesh aperture on the sorting net is set to 0.5 mm.

3. A marine macrobenthic animal sorting device according to claim 1, characterized in that: The sample collector is made of high polyester fiber material, and the mesh aperture of the sample collector is 0.5 mm.

4. A marine macrobenthic animal sorting device according to claim 1, characterized in that: The storage and sorting device comprises a storage basket, and the storage basket has a length of 40 cm, a width of 40 cm, and a height of 20 cm.

5. A marine macrobenthic animal sorting device according to claim 4, characterized in that: A circular through hole is provided on the side wall of the storage basket, and a sorting rotating shaft is connected to the circular through hole through a bearing.

6. A marine macrobenthic animal sorting device according to claim 5, characterized in that: A water pipe fixing device is clamped just above the storage basket, and the water pipe fixing device includes a water pipe bracket. The water pipe bracket is detachable, and a sleeve column is arranged at the front end of the water pipe bracket. A barrier net is installed at the bottom of the sleeve column. The aperture of the barrier net is 0.5mm, and it is used to isolate organisms from natural water bodies.

7. The marine macrobenthic animal sorting device according to claim 5, characterized in that: A rotor is arranged at one end of the sorting shaft.

8. The marine macrobenthic animal sorting device according to claim 6, characterized in that: The sorting shaft is fixedly installed at the middle position of a rotatable grid, the grid aperture on the rotatable grid is 2 mm, and the rotatable grid is flush with the bottom edge of the storage basket.

9. The marine macrobenthic animal sorting device according to claim 4, characterized in that: A buckle is installed on the inner wall of the storage basket, and the buckle is arranged above the side of the rotatable grid and is used to fix the rotatable grid.

10. A sorting control method for a marine macrobenthic animal sorting device, applied to a marine macrobenthic animal sorting device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The rotatable grid is driven to be placed horizontally at the bottom of the storage basket by turning the rotor, the buckle is closed to fix the rotatable grid, and the collected sediment is poured onto the rotatable grid fixed in the storage basket. After the inversion is completed, enter S2; S2: The water inlet of the water pipe is placed on the casing column, and the casing column is placed above the rotatable grid by using a water pipe bracket installed on the edge of the storage basket. The water supply device is turned on to allow water to flow from the water pipe into the casing column into the storage basket to flush and sort the sediment on the rotatable grid. The flushing and sorting process enters S3: S3: Large marine benthic animals and debris larger than 2 mm are retained in the rotatable grid under the action of water source sorting, and large marine benthic animals and sediment particles smaller than 2 mm fall into the sample collector under the guidance of the sorting net under the action of water source sorting, and enter S4 after washing and sorting; S4: The water source continues to flow into the sorting net for continuous flushing to sort the sediment particles of large marine benthic animals and residues larger than 0.5 mm and bottom mud impurities smaller than 0.5 mm that fall into the sample collector. The large marine benthic animals and residues larger than 0.5 mm and sediment particles smaller than 0.5 mm are separated by the water source sorting action, and then enter S5 after the separation is completed; S5: Open the buckle and control the rotor to flip the rotatable grid. Large marine benthic animals and residues larger than 2 mm on the rotatable grid are concentrated and guided into the sample collector through the sorting net to complete the sorting and collection.

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