Multi-layer plankton collection device and collection method

Abstract

The invention relates to the field of plankton collection technology, in particular to a multi-water layer plankton collection device and a collection method, comprising a plurality of collection mechanisms arranged in an array along a vertical direction, including an outer casing, a collecting sleeve arranged on the inner side of the outer casing and an opening and closing plate arranged on the outer side of the side wall of the outer casing, a feed window penetrating the side wall of the outer casing is fixedly provided on the side wall of the outer casing, a feed port of the collecting sleeve is abutted against one end of the feed window on the inner side of the outer casing, an opening and closing plate is inserted into one end of the feed window on the outer side of the outer casing, a locking box is fixedly provided on the bottom surface of the feed window on the outer side of the outer casing, a piston block is slidably sleeved in the locking box, and a T-shaped column is fixedly provided on one end of the top surface of the piston block; and a top plate arranged above the uppermost connecting mechanism group, the top plate is filled with through holes, the collection device can realize efficient and accurate collection when facing multiple water layers, has good collection efficiency, can be applied to a wide range of scenes, and has good overall practicality.

Description

Technical Field

[0001] The invention relates to the technical field of plankton collection, and in particular to a multi-water layer plankton collection device and a collection method. Background Art

[0002] Plankton refers to drifting organisms that live in water but lack effective mobility and are mainly controlled by water currents. They are divided into phytoplankton and zooplankton. Plankton is the main component of the ecosystem. The number and variety of plankton indicate the biodiversity and productivity of the water body. Therefore, the quantitative collection and analysis of plankton is an important aspect of aquatic resource aquaculture, water biodiversity protection and water productivity research.

[0003] The existing plankton collection is mainly achieved by placing the collection device in a designated water area and immersing it for a period of time. For example, the existing public document CN112167190B-A variable water layer plankton collection device and the existing public document CN221382226U-A plankton collection device capable of collecting plankton in multiple water layers both disclose a multi-water layer collection device for plankton. However, the existing collection devices still have the following deficiencies in actual use:

[0004] 1. In order to improve the accuracy of plankton collection in each water layer, the collection port of the existing collection device is first in a closed state. Only after reaching the predetermined water layer, the staff will assist in opening it through an adjustment mechanism (such as an electric push rod, etc.). Although this design method can improve the accuracy of collection, the opening method is more auxiliary and the opening sensitivity is low, and the applicability is poor;

[0005] 2. The existing collection device is fixed as a whole, and collects plankton in multiple water layers by designing the height. However, in this collection method, the position between two adjacent collection boxes cannot be adjusted, which results in that the water layer position reached by the collection box is not accurate in different waters, and the overall practicality is poor;

[0006] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0007] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0008] In view of the problems that the above-mentioned existing plankton collecting devices have complicated opening methods of the feed port and poor overall applicability in actual use, a multi-water layer plankton collecting device is proposed.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: a multi-layer plankton collection device, comprising a plurality of collection mechanisms arranged in an array along the vertical direction, including an outer casing, a collecting sleeve arranged on the inner side of the outer casing and an opening and closing plate arranged on the outer side of the side wall of the outer casing, a feeding window penetrating the side wall of the outer casing is fixedly provided on the side wall of the outer casing, a feeding port of the collecting sleeve is abutted against one end of the feeding window on the inner side of the outer casing, an opening and closing plate is inserted into one end of the feeding window on the outer side of the outer casing, a locking box is fixedly provided on the bottom surface of the feeding window on the outer side of the outer casing, a piston block is slidably sleeved in the locking box, and a T-shaped column is fixedly provided at one end of the top surface of the piston block, a threaded rod is spirally sleeved on the end surface of the locking box close to the T-shaped column, and a water inlet hole is opened on the other end surface of the locking box, a push plate is fixedly provided on one end of the threaded rod inside the locking box, and a push plate is abutted against a locking plate in the locking box between the push plate and the piston block. A first spring is arranged, and a through groove for the T-shaped column to slide through is provided on the bottom plate of the locking box, and a locking groove for the clearance fit of the T-shaped column is provided on the bottom surface of the opening and closing plate, and the vertical section of the locking groove is formed by a rectangular groove and an inverted convex groove integrally formed, the rectangular groove and the inverted convex groove have the same depth, and the inverted convex groove is arranged on the side away from the first spring; a buoyancy block is fixedly arranged on the side surface of the upper end of the opening and closing plate away from the outer casing; a connecting mechanism comprises two symmetrically arranged connecting rods, a connecting plate arranged at one end of one of the connecting rods and a connecting ring arranged at one end of the other connecting rod, a plurality of connecting mechanisms are arranged in an array along the circumference of the outer casing to form a group of connecting mechanisms, a plurality of groups of connecting mechanisms are arranged in an array along the vertical direction, and a plurality of groups of connecting mechanisms and a plurality of collecting mechanisms are arranged in an alternating manner; and a top plate arranged above the topmost connecting mechanism group, the top plate is filled with through holes.

[0010] The beneficial effects of the present invention are as follows: when the plankton collecting device is in use, after the collecting mechanism is immersed in water, water enters the locking box on one side of the piston block through the water inlet hole. According to the principle that pressure is related to the depth of water, when the collecting mechanism moves to a predetermined position, the water pressure can just push the piston block toward the first spring side, so that the T-shaped column moves from one end of the inverted convex groove of the locking groove to one end of the rectangular groove, and then under the action of the buoyancy of the buoyancy block, the T-shaped column disengages from the locking groove, and the opening and closing plate moves upward, thereby realizing the automatic opening of the feed window. This arrangement can realize the collection of plankton by the collecting mechanism in a predetermined water layer, and the method of starting collection is convenient, the sensitivity is good, and the accuracy of the collected water layer height is good.

[0011] As a preferred solution of the multi-layer plankton collection device of the present invention, positioning strips are symmetrically fixed on the outer walls of the collecting sleeve on both sides of the feed port, positioning plates are symmetrically fixed on the two outer walls of the feed window on the inner side of the outer casing, and a positioning groove with an upper opening in the vertical direction and used for the sliding insertion of the positioning strip is provided on the positioning plate, and a positioning bolt is spirally sleeved on one side wall of the positioning groove above the positioning strip.

[0012] As a preferred solution of the multi-layer plankton collection device of the present invention, wherein: a support plate is fixedly provided on the bottom surface of the feed window on the inner side of the outer casing, extending toward the side of the collecting sleeve, a positioning column is fixedly provided on the top surface of the free end of the support plate, a support block is fixedly provided on the bottom surface of the collecting sleeve, and a positioning hole for the sliding insertion of the positioning column is opened on the bottom surface of the support block.

[0013] As a preferred solution of the multi-layer plankton collection device of the present invention, wherein: a partition groove parallel to the feed window is opened in the middle of the top surface of the collection sleeve, a partition is slidably inserted in the partition groove, a U-shaped block is fixedly provided on the inner wall of the collection sleeve outside the partition, a second U-shaped limiting groove is opened on the inner wall of the U-shaped block, a first limiting strip matching the gap with the second limiting groove is fixedly provided on the side wall of the partition, extension pieces are symmetrically fixedly provided on both sides of the upper end of the partition, and the extension pieces are fixed to the U-shaped block by screws; second filter holes are opened in an array on the partition, and first filter holes are opened in an array on multiple side walls of the collection sleeve on the side of the partition away from the feed window, and the mesh size of the first filter holes is smaller than the mesh size of the second filter holes.

[0014] As a preferred solution of a multi-layer plankton collection device of the present invention, second limit strips are symmetrically fixed on both side surfaces of the opening and closing plate, a first limit groove for sliding insertion of the second limit strip is provided on the inner side wall of the feed window, and the upper end of the first limit groove is open.

[0015] In view of the fact that the positions of two adjacent collection boxes in the existing collection device cannot be adjusted, this leads to the problem that the water layer position reached by the collection box is not accurate when facing different water areas, and the overall practicality is poor. Therefore, a further preferred solution improvement is made to a multi-water layer plankton collection device of the present invention, wherein: a rotating head is fixedly arranged at one end of the connecting rod, and at the same time, an external thread is provided on the outer wall of the other end of the connecting rod, and the external thread is spirally matched with the internal thread on the inner wall of the connecting sleeve, one of the connecting sleeves is fixedly connected to the side wall of the connecting disk, and the other connecting sleeve is fixedly connected to the side wall of the connecting ring through a connecting block; a rotating head is fixedly arranged at one end of the connecting rod, and an external thread is provided on the outer wall of the other end of the connecting rod, and an external thread is spirally matched with an internal thread on the inner wall of the connecting sleeve, and one of the connecting sleeves is fixedly connected to the side wall of the connecting disk, and the other connecting sleeve is fixedly connected to the side wall of the connecting ring through a connecting block; There is a groove, and a center column coaxial with the connecting disk is fixed in the groove, the connecting ring is slidably sleeved on the center column, ratchet teeth are arranged in a circumferential array on the side wall of the connecting ring, and a clamping column for clamping in the position between the two ratchet teeth is arranged on the horizontal side of the connecting ring, both ends of the clamping column are slidably sleeved with T-shaped rods, and one end of the T-shaped rod is fixedly connected to the side wall of the groove through an end plate, and a second spring is slidably sleeved on the T-shaped rod between the clamping column and the end plate; a rotating column is slidably sleeved on the rotating head, one end of the rotating column is fixedly connected to one end face of the fixing ring through a fixing plate, and at the same time, a locking bolt is spirally sleeved on the other end of the rotating column.

[0016] Another beneficial effect of the present invention is that when the plankton collection device is in use, the connection ring is slidably sleeved on the central column, so that the connection plate and the connection ring can respectively drive the two connecting rods to rotate with the central column as the axis, so that the angle of the two connecting rods in the same connecting mechanism can be adjusted in the vertical direction. Through such angle adjustment, the spacing between two adjacent collection mechanisms can be adjusted. Such a design method can be adaptively adjusted to different waters and waters with changing water layer divisions. It has good overall practicality. After the angle adjustment of the two connecting rods is completed, the cooperation of the ratchet and the clamping column can achieve the limited fixation of the two connecting rods after the angle adjustment.

[0017] As a preferred solution of the multi-layer plankton collection device of the present invention, the axes of the central column and the rotating column are both arranged perpendicular to the radial line of the fixed ring.

[0018] As a preferred solution of the multi-layer plankton collection device of the present invention, an annular groove is provided in the circumferential direction on the other end surface of the fixed ring provided with the rotating column, a second limiting ring for cooperating with the annular groove gap is symmetrically fixed on the upper and lower end surfaces of the outer casing, a first limiting ring for cooperating with the annular groove gap is fixed in the circumferential direction on the bottom surface of the top plate, and a guide wing is fixed on the outer wall of the other side of the outer casing provided with the feed window.

[0019] As a preferred solution of the multi-layer plankton collection device of the present invention, water immersion holes are arranged in a circumferential array on the side wall of the outer casing.

[0020] In addition, the present invention also provides the following technical solutions: a collection method of a multi-water layer plankton collection device, wherein the multi-water layer plankton collection device collects plankton according to the following steps;

[0021] S1: Select a corresponding number of collection mechanisms according to the number of water layers to be collected, and connect and match a group of connecting mechanisms between adjacent collection mechanisms;

[0022] S2: adjusting the bending degrees of two connecting rods in the same connecting mechanism according to the distance between adjacent water layers;

[0023] S3: After the adjustment is completed, the top plate is matched above the uppermost connecting mechanism, and the collection device is moved to the water surface through the cooperation between the top plate and the lifting mechanism;

[0024] S4: The entire collection device is immersed downward into the collection water area. When the collection mechanism moves to the designated position, the piston block is squeezed and moved toward the first spring under the action of water pressure, so that the T-shaped column is disengaged from the locking groove;

[0025] S5: Under the buoyancy of the buoyancy block, the opening and closing plate is driven to move upward, so that the feed window is opened and the plankton collection begins. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0027] Figure 1 The figure is a schematic diagram of the overall structure of a multi-layer plankton collection device in the present invention.

[0028] Figure 2 It is a schematic diagram of the overall structure of the collection mechanism in the present invention.

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the bottom structure of the structure.

[0030] Figure 4 For the present invention Figure 2 A cross-sectional view of the structure in the vertical direction.

[0031] Figure 5 For the present invention Figure 2 Exploded view of the structure.

[0032] Figure 6 This is a diagram of the collecting sleeve and the partition plate to be matched in the present invention.

[0033] Figure 7 It is a schematic diagram of the overall structure of the outer casing in the present invention.

[0034] Figure 8 For the present invention Figure 7 The drawings of the outer casing and the opening and closing plates in the structure to be matched.

[0035] Fig. 9 It is a schematic diagram of the internal structure of the locking box in the present invention.

[0036] Fig.10 It is a schematic diagram of the overall structure of the opening and closing plate in the present invention.

[0037] Fig.11 This is a diagram of the connecting mechanism, top plate and fixing ring of the present invention to be matched.

[0038] Fig.12 It is an exploded view of the connection mechanism in the present invention.

[0039] Fig.13 It is a cross-sectional view of the connecting disk and connecting ring matching body in the center column radial direction of the present invention. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0043] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0044] Reference Figure 1 , Figure 5 , Fig.11 and Fig.12 , which is the first embodiment of the present invention, and this embodiment provides a multi-water layer plankton collection device. When the plankton collection device is in use, multiple collection mechanisms 100 can realize the synchronous collection of plankton in multiple water areas, the connecting mechanism 200 is used for fixed connection between adjacent collection mechanisms 100, and the top plate 300 is used for the coordinated lifting of the lifting device and the fixed installation of the buoyancy device.

[0045] Specifically, it includes: a plurality of collecting mechanisms 100 arranged in an array along the vertical direction, including an outer casing 101, a collecting sleeve 102 arranged on the inner side of the outer casing 101 and an opening and closing plate 103 arranged on the outer side of the side wall of the outer casing 101; a connecting mechanism 200, including two symmetrically arranged connecting rods 201, a connecting plate 202 arranged at one end of one of the connecting rods 201 and a connecting ring 203 arranged at one end of the other connecting rod 201, a plurality of connecting mechanisms 200 are arranged in an array along the circumference of the outer casing 101 to form a group of connecting mechanisms 200, a plurality of groups of connecting mechanisms 200 are arranged in an array along the vertical direction, and a plurality of groups of connecting mechanisms 200 and a plurality of collecting mechanisms 100 are arranged in an alternating manner; and a top plate 300 arranged above the uppermost group of connecting mechanisms 200, the top plate 300 is filled with through holes 301, and the arrangement of the through holes 301 facilitates the coordination and fixation of the lifting device and the buoyancy device.

[0046] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a feed window 101a penetrating the side wall of the outer casing 101 is fixedly arranged on the side wall of the outer casing 101, and a feed port 102d of the collecting sleeve 102 abuts against one end of the feed window 101a inside the outer casing 101, so as to allow plankton to enter the collecting sleeve 102. Positioning strips 102d-1 are symmetrically fixedly arranged on the outer side wall of the collecting sleeve 102 on both sides of the feed port 102d, and positioning plates 101a-3 are symmetrically fixedly arranged on the two outer side walls of the feed window 101a inside the outer casing 101. The positioning plates 101a-3 are provided with a positioning groove 101a-4 with an upper end opening in the vertical direction and used for the sliding engagement of the positioning strip 102d-1. The setting can realize the cooperation between the collecting sleeve 102 and the outer casing 101. A positioning bolt 101a-5 is spirally sleeved on one side wall of the positioning groove 101a-4 above the positioning bar 102d-1. The setting of the positioning bolt 101a-5 can realize the limiting cooperation between the positioning bar 102d-1 and the positioning plate 101a-3. When the above setting is in use and during collection, plankton enters the collecting sleeve 102 through the feed window 101a and the feed port 102d. By loosening the positioning bolt 101a-5, the collecting sleeve 102 and the outer casing 101 can be disassembled to realize the removal and collection of the plankton after collection.

[0047] Furthermore, a support plate 101a-1 is fixedly provided on the bottom surface of the feed window 101a on the inner side of the outer casing 101 and extends toward the collecting sleeve 102. A positioning column 101a-2 is fixedly provided on the top surface of the free end of the support plate 101a-1. A support block 102a is fixedly provided on the bottom surface of the collecting sleeve 102. A positioning hole for the sliding insertion of the positioning column 101a-2 is provided on the bottom surface of the support block 102a. This arrangement facilitates the cooperation between the collecting sleeve 102 and the outer casing 101, and also facilitates the support of the collecting sleeve 102 by the support plate 101a-1.

[0048] Furthermore, a partition groove 102e parallel to the feed window 101a is provided in the middle of the top surface of the collecting sleeve 102, a partition plate 102b is slidably inserted in the partition groove 102e, a U-shaped block 102e-1 is fixedly provided on the inner wall of the collecting sleeve 102 outside the partition plate 102b, a second U-shaped limiting groove 102e-2 is provided on the inner side wall of the U-shaped block 102e-1, a first limiting strip 102b-2 is fixedly provided on the side wall of the partition plate 102b, and the first limiting strip 102b-2 is gap-matched with the second limiting groove 102e-2 to improve the sealing performance between the partition plate 102b and the U-shaped block 102e-1, and extension sheets 102b-3 are symmetrically fixedly provided on both sides of the upper end of the partition plate 102b, and the extension sheets 102b-3 It is fixed to the U-shaped block 102e-1 by screws, and this arrangement facilitates the installation, disassembly and replacement of the partition 102b; the partition 102b is provided with an array of second filter holes 102b-1, and the multiple side walls of the collecting sleeve 102 on the side of the partition 102b away from the feed window 101a are provided with first filter holes 102c in an array, and the mesh size of the first filter holes 102c is smaller than the mesh size of the second filter holes 102b-1. This arrangement can distinguish and classify plankton according to their size. Plankton containing water first enters from the feed port 102d, and after being filtered by the partition 102b, plankton with a smaller volume enters, and water is discharged from the first filter holes 102c.

[0049] See Figure 8 and Fig. 9As shown, an opening and closing plate 103 is inserted into one end of the feed window 101a on the outside of the outer casing 101, and second limiting strips 103b are symmetrically fixed on both sides of the opening and closing plate 103. A first limiting groove 101a-6 for sliding insertion of the second limiting strip 103b is provided on the inner side wall of the feed window 101a, and the upper end of the first limiting groove 101a-6 is open. This setting can play a role in limiting and guiding the movement of the opening and closing plate 103. A locking box 105 is fixed on the bottom surface of the feed window 101a on the outside of the outer casing 101. The locking box A piston block 105a-1 is slidably sleeved in 105, and a T-shaped column 105a is fixedly arranged at one end of the top surface of the piston block 105a-1, a threaded rod 105c is spirally sleeved on the end surface of the locking box 105 close to the T-shaped column 105a, and a water inlet hole 105d is opened on the other end surface of the locking box 105, a push plate 105c-1 is fixedly arranged on one end of the threaded rod 105c inside the locking box 105, and a first spring 105b is placed in the locking box 105 between the push plate 105c-1 and the piston block 105a-1;

[0050] When the above arrangement is in use, the first spring 105b will always provide a squeezing force to the piston block 105a-1. When water enters the locking box 105 on one side of the piston block 105a-1 through the water inlet 105d, according to the principle of p=ρgh, after the locking box 105 drops a certain distance underwater, the pressure of the water on one side of the piston block 105a-1 is just greater than the squeezing force provided by the first spring 105b, so that the piston block 105a-1 can drive the T-shaped column 105a to move in the locking box 105;

[0051] In addition, by rotating the threaded rod 105c, the push plate 105c-1 can be moved along the axis direction of the threaded rod 105c, so that the squeezing force of the first spring 105b can be adjusted, so that the piston block 105a-1 can be accurately moved after the collection mechanism 100 reaches the predetermined position under different height positions and different density water conditions;

[0052] In actual use, the cooperation between the locking box 105 and the feeding window 101a, the cooperation between the opening and closing plate 103 and the feeding window 101a, and the cooperation between the piston block 105a-1 and the locking box 105 are all sealed and waterproof.

[0053] See Figure 8 and Fig.10As shown, a through groove 101a-7 for the T-shaped column 105a to slide through is provided on the bottom plate of the locking box 105, and a locking groove 103c for the clearance fit of the T-shaped column 105a is provided on the bottom surface of the opening and closing plate 103. The vertical cross section of the locking groove 103c is formed by a rectangular groove and an inverted convex groove integrally formed. The rectangular groove and the inverted convex groove have the same depth, and the inverted convex groove is arranged on the side away from the first spring 105b. A buoyancy block 103a is fixedly arranged on the side surface of the upper end of the opening and closing plate 103 away from the outer casing 101.

[0054] When the above arrangement is in use, when the piston block 105a-1 drives the T-shaped column 105a to move, when the T-shaped column 105a moves from the inverted convex groove to the rectangular groove position, under the action of the buoyancy block 103a providing an upward buoyancy to the opening and closing plate 103, the T-shaped column 105a and the locking groove 103c are separated, so that the feed window 101a can be opened to allow plankton to enter. Because of the setting of the inverted convex groove, when the T-shaped column 105a abuts against one end thereof, the first spring 105b can adjust the squeezing force of the piston block 105a-1 by moving the push plate 105c-1. Example 2

[0055] Reference Figure 1 , Figure 2 , Fig.11 , Fig.12 and Fig.13 , which is the second embodiment of the present invention, is based on the previous embodiment, except that this embodiment is proposed to facilitate adjustment of the distance between adjacent collection mechanisms 100, thereby facilitating effective multi-layer collection in water areas with different water layer heights and sizes.

[0056] Specifically, a rotating head 201a is fixedly provided at one end of the connecting rod 201, and an external thread 201b is provided on the outer wall of the other end of the connecting rod 201, and the external thread 201b is spirally matched with the internal thread 204a on the inner wall of the connecting sleeve 204. This arrangement facilitates the disassembly and replacement of the connecting rod 201 and the adaptive adjustment of the height of the connecting rod 201. One of the connecting sleeves 204 is fixedly connected to the side wall of the connecting disk 202, and the other connecting sleeve 204 is fixedly connected to the side wall of the connecting ring 203 through the connecting block 203b;

[0057] A groove 202a is provided on the side wall of the connecting disk 202, and a central column 202b coaxial with the connecting disk 202 is fixed in the groove 202a. The connecting ring 203 is slidably sleeved on the central column 202b. Ratchet teeth 203a are arranged in a circumferential array on the side wall of the connecting ring 203, and a clamping column 202c for clamping between two ratchet teeth 203a is provided on the horizontal side of the connecting ring 203. Both ends of the clamping column 202c are slidably sleeved. A T-shaped rod 202c-1, one end of which is fixedly connected to the side wall of the groove 202a through an end piece 202c-3, and a second spring 202c-2 is slidably sleeved on the T-shaped rod 202c-1 between the clamping column 202c and the end piece 202c-3. The second spring 202c-2 can provide a squeezing force to the clamping column 202c, so that the clamping column 202c and the ratchet 203a can be matched;

[0058] A rotating column 104a is slidably sleeved on the rotating head 201a, one end of the rotating column 104a is fixedly connected to one end surface of the fixing ring 104 through a fixing sheet 104a-1, and a locking bolt 104b is spirally sleeved on the other end of the rotating column 104a. The setting of the locking bolt 104b facilitates the disassembly and replacement between the rotating column 104a and the connecting rod 201;

[0059] When the above arrangement is in use, when the connecting ring 203 and the connecting disk 202 are rotated with the central column 202b as the axis, the clamping column 202c can switch between the ratchet teeth 203a. Through the setting of the second spring 202c-2, the clamping column 202c and the ratchet teeth 203a can be kept locked after switching, so that the bending between the two connecting rods 201 in the same connecting mechanism 200 can be achieved, which facilitates the adjustment and change of the distance between the two collecting mechanisms 100.

[0060] Furthermore, the axes of the central column 202 b and the rotating column 104 a are both arranged perpendicular to the radial line of the fixing ring 104 , so that the bending direction of the connecting rod 201 is along the radial direction of the fixing ring 104 . Example 3

[0061] Reference Figure 5 , Figure 8 and Fig.11 , which is the third embodiment of the present invention, is based on the previous embodiment, except that this embodiment is proposed in order to facilitate the effective collection of plankton in flowing waters and to reduce the lateral force of the device itself when facing flowing waters, thereby facilitating the device to collect plankton in a designated area and to increase the overall service life of the device.

[0062] Specifically, the other end surface of the fixing ring 104 provided with the rotating column 104a is provided with an annular groove 104c in the circumferential direction, the upper and lower end surfaces of the outer casing 101 are symmetrically fixed with a second stop ring 101d for clearance matching with the annular groove 104c, and the bottom surface of the top plate 300 is fixed with a first stop ring 302 for clearance matching with the annular groove 104c in the circumferential direction. This arrangement can realize the relative rotation between the outer casing 101, the fixing ring 104 and the top plate 300. A guide wing 101b is fixedly provided on the outer wall of the other side of the outer casing 101 with respect to the feeding window 101a. When the above arrangement is in use, through the arrangement of the guide wing 101b, when in flowing waters, due to the thrust of the water flow, the guide wing 101b will drive the outer casing 101 to rotate, and the guide wing 101b will be pushed under the water flow, so that the feeding window 101a can face the water flow, and plankton can effectively and quickly enter through the feeding window 101a.

[0063] Furthermore, water immersion holes 101c are provided in a circumferential array on the side wall of the outer casing 101. This arrangement enables the collection mechanism 100 to be quickly immersed in water and can reduce the squeezing force of water on the outer casing 101, thereby increasing the service life and avoiding the overall tilt of the device due to the thrust of the water flow. Example 4

[0064] This embodiment is the fourth embodiment of the present invention. This embodiment provides a collection method of a multi-layer plankton collection device. Specifically, plankton collection is performed according to the following steps:

[0065] S1: Select a corresponding number of collection mechanisms 100 according to the number of water layers to be collected, and connect a group of connecting mechanisms 200 between adjacent collection mechanisms 100;

[0066] S2: adjusting the bending degrees of two connecting rods 201 in the same connecting mechanism 200 according to the distance between adjacent water layers;

[0067] S3: After the adjustment is completed, the top plate 300 is matched above the uppermost connecting mechanism 200, and the collection device is moved to the water surface through the cooperation between the top plate 300 and the lifting mechanism;

[0068] S4: The entire collection device is immersed downward into the collection water area. When the collection mechanism 100 moves to the designated position, the piston block 105a-1 is squeezed and moved toward the first spring 105b under the action of water pressure, so that the T-shaped column 105a is disengaged from the locking groove 103c;

[0069] S5: Under the buoyancy of the buoyancy block 103a, the opening and closing plate 103 is driven to move upward, so that the feed window 101a is opened and the plankton collection begins.

[0070] In addition, it should be noted that the components not described in detail in this article are prior art.

[0071] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of a plurality of parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0072] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0073] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-layer plankton collection device, characterized in that: include, A plurality of collecting mechanisms (100) arranged in an array along a vertical direction, comprising an outer casing (101), a collecting sleeve (102) arranged on the inner side of the outer casing (101), and an opening and closing plate (103) arranged on the outer side of the side wall of the outer casing (101); a feed window (101a) penetrating the side wall of the outer casing (101) is fixedly provided on the side wall of the outer casing (101); a feed port (102d) of the collecting sleeve (102) and the feed window (101a) on the inner side of the outer casing (101) are connected to each other. One end of the outer casing (101) is abutted, one end of the feed window (101a) outside the outer casing (101) is inserted with an opening and closing plate (103), a locking box (105) is fixedly provided on the bottom surface of the feed window (101a) outside the outer casing (101), a piston block (105a-1) is slidably sleeved in the locking box (105), and a T-shaped column (105a) is fixedly provided on one end of the top surface of the piston block (105a-1), and a screw sleeve is spirally sleeved on the end surface of the locking box (105) close to the T-shaped column (105a). A threaded rod (105c) is provided, and a water inlet hole (105d) is provided on the other end surface of the locking box (105); a push plate (105c-1) is fixedly provided on one end of the threaded rod (105c) inside the locking box (105); a first spring (105b) is placed in abutment with the locking box (105) between the push plate (105c-1) and the piston block (105a-1); a bottom plate of the locking box (105) is provided with a slot for the T-shaped column (105a) to slide through; A through groove (101a-7) is provided on the bottom surface of the opening and closing plate (103), and a locking groove (103c) for clearance fit of the T-shaped column (105a) is provided, wherein the vertical cross-section of the locking groove (103c) is formed by integrally forming a rectangular groove and an inverted convex groove, the rectangular groove and the inverted convex groove have the same depth, and the inverted convex groove is arranged on a side away from the first spring (105b); a buoyancy block (103a) is fixedly provided on a side surface of the upper end of the opening and closing plate (103) away from the outer casing (101); A connecting mechanism (200) comprising two symmetrically arranged connecting rods (201), a connecting plate (202) arranged at one end of one of the connecting rods (201), and a connecting ring (203) arranged at one end of the other connecting rod (201); a plurality of the connecting mechanisms (200) are arranged in an array along the circumference of the outer casing (101) to form a group of connecting mechanisms (200); a plurality of groups of the connecting mechanisms (200) are arranged in an array along the vertical direction, and the plurality of groups of the connecting mechanisms (200) and the plurality of collecting mechanisms (100) are arranged in a staggered manner; and, A top plate (300) disposed above the uppermost connection mechanism (200) group, wherein the top plate (300) is filled with through holes (301); Positioning strips (102d-1) are symmetrically fixedly provided on the outer side walls of the collecting sleeve (102) on both sides of the feed port (102d); positioning plates (101a-3) are symmetrically fixedly provided on the two outer side walls of the feed window (101a) inside the outer casing (101); a positioning groove (101a-4) with an upper opening opened in a vertical direction and used for the positioning strip (102d-1) to be slidably inserted is provided on the positioning plate (101a-3); a positioning bolt (101a-5) is spirally sleeved on one side wall of the positioning groove (101a-4) above the positioning strip (102d-1); A support plate (101a-1) is fixedly provided on the bottom surface of the feed window (101a) inside the outer casing (101) and extends toward one side of the collecting sleeve (102); a positioning column (101a-2) is fixedly provided on the top surface of the free end of the support plate (101a-1); a support block (102a) is fixedly provided on the bottom surface of the collecting sleeve (102); and a positioning hole for the positioning column (101a-2) to be slidably inserted is provided on the bottom surface of the support block (102a); A partition groove (102e) parallel to the material feed window (101a) is provided in the middle of the top surface of the collecting sleeve (102), a partition plate (102b) is slidably inserted in the partition groove (102e), a U-shaped block (102e-1) is fixedly provided on the inner wall of the collecting sleeve (102) outside the partition plate (102b), a U-shaped second limiting groove (102e-2) is provided on the inner side wall of the U-shaped block (102e-1), a first limiting strip (102b-2) gap-matched with the second limiting groove (102e-2) is fixedly provided on the side wall of the partition plate (102b), and extension pieces (102b-3) are symmetrically fixedly provided on both sides of the upper end of the partition plate (102b), and the extension piece (102b-3) is fixed to the U-shaped block (102e-1) by screws; The partition plate (102b) is provided with second filter holes (102b-1) in an array, and a plurality of side walls of the collecting sleeve (102) on a side of the partition plate (102b) away from the material feed window (101a) are provided with first filter holes (102c) in an array, and the mesh size of the first filter holes (102c) is smaller than the mesh size of the second filter holes (102b-1).

2. A multi-layer plankton collection device as claimed in claim 1, characterized in that: Second limiting strips (103b) are symmetrically fixed on both side surfaces of the opening and closing plate (103), a first limiting groove (101a-6) for sliding insertion of the second limiting strip (103b) is provided on the inner side wall of the feed window (101a), and the upper end of the first limiting groove (101a-6) is open.

3. A multi-layer plankton collection device as claimed in claim 1 or 2, characterized in that: A rotating head (201a) is fixedly provided at one end of the connecting rod (201), and an external thread (201b) is provided on the outer wall of the other end of the connecting rod (201), wherein the external thread (201b) is spirally matched with an internal thread (204a) on the inner wall of the connecting sleeve (204), wherein one connecting sleeve (204) is fixedly connected to the side wall of the connecting disk (202), and the other connecting sleeve (204) is fixedly connected to the side wall of the connecting ring (203) via a connecting block (203b); The side wall of the connection disk (202) is provided with a groove (202a), and a center column (202b) coaxial with the connection disk (202) is fixed in the groove (202a); the connection ring (203) is slidably sleeved on the center column (202b); ratchet teeth (203a) are arranged in a circumferential array on the side wall of the connection ring (203); and a horizontal side of the connection ring (203) is provided with a plurality of teeth for engaging with the two ratchet teeth (203a). 3a), both ends of the clamping column (202c) are slidably sleeved with a T-shaped rod (202c-1), one end of the T-shaped rod (202c-1) is fixedly connected to the side wall of the groove (202a) through an end plate (202c-3), and a second spring (202c-2) is slidably sleeved on the T-shaped rod (202c-1) between the clamping column (202c) and the end plate (202c-3); A rotating column (104a) is slidably sleeved on the rotating head (201a), one end of the rotating column (104a) is fixedly connected to one end surface of the fixing ring (104) via a fixing plate (104a-1), and a locking bolt (104b) is spirally sleeved on the other end of the rotating column (104a).

4. A multi-layer plankton collection device as claimed in claim 3, characterized in that: The axes of the central column (202b) and the rotating column (104a) are both arranged perpendicular to the radial line of the fixing ring (104).

5. A multi-layer plankton collection device as claimed in claim 4, characterized in that: An annular groove (104c) is provided in the circumferential direction on the other end surface of the fixed ring (104) provided with the rotating column (104a); a second limiting ring (101d) for gap fitting with the annular groove (104c) is symmetrically fixed on the upper and lower end surfaces of the outer casing (101); a first limiting ring (302) for gap fitting with the annular groove (104c) is fixed in the circumferential direction on the bottom surface of the top plate (300); and a guide wing (101b) is fixed on the outer wall of the other side of the outer casing (101) provided with the material feed window (101a).

6. A multi-layer plankton collection device as claimed in claim 5, characterized in that: The side wall of the outer casing (101) is provided with water-immersion holes (101c) in a circumferential array.

7. A collection method of a multi-layer plankton collection device, characterized in that: The multi-layer plankton collection device according to any one of claims 4 to 6 collects plankton according to the following steps; S1: selecting a corresponding number of collection mechanisms (100) according to the number of water layers to be collected, and connecting and matching a group of connection mechanisms (200) between adjacent collection mechanisms (100); S2: adjusting the bending degrees of two connecting rods (201) in the same connecting mechanism (200) according to the distance between adjacent water layers; S3: After the adjustment is completed, the top plate (300) is matched above the uppermost connection mechanism (200), and the collection device is moved to the water surface through the cooperation between the top plate (300) and the lifting mechanism; S4: The entire collection device is immersed downward into the collection water area. When the collection mechanism (100) moves to a designated position, the piston block (105a-1) is squeezed and moved toward the first spring (105b) under the action of water pressure, so that the T-shaped column (105a) is disengaged from the locking groove (103c); S5: Under the buoyancy of the buoyancy block (103a), the opening and closing plate (103) is driven to move upward, so that the feed window (101a) is opened and the collection of plankton begins.

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