Net type ampullaria gigas egg catching device

Abstract

The utility model discloses a net type ampullaria gigas egg catching device which comprises two net rolling mechanisms arranged oppositely and a catching net connected end to end, each net rolling mechanism comprises a rotary drum, the catching net is arranged between the two rotary drums arranged oppositely in a sleeving mode, and at least one rotary drum drives the catching net to rotate; the at least one clamping device is arranged on the catching net and is used for extruding the two sides of the catching net. According to the utility model, the capturing net capable of conveying / circularly rotating is used as a carrier for the spawning of the ampullaria gigas, so that the ampullaria gigas spawns can be quickly and stably destroyed in a large area; the pomacea canaliculata egg catching device can be suitable for catching pomacea canaliculata eggs in different scenes, is large in catching amount and high in efficiency, and is particularly suitable for places with high pomacea canaliculata density.

Description

Technical Field

[0001] This utility model relates to the field of agricultural application device technology, and in particular to the field of agricultural pest control device technology, specifically to a net-type golden apple snail egg capture device. Background Technology

[0002] Golden apple snails, a typical invasive alien species, have spread rapidly since their introduction to my country, causing harm to multiple areas including ecology, agriculture, and human health. Ecologically, golden apple snails have an extremely high reproductive capacity, laying eggs for 2-3 generations per year, with a single layup producing hundreds to thousands of eggs, and a hatching rate exceeding 80%. Lacking natural predators, they compete with native species for resources by consuming aquatic plants, leading to ecological imbalances and a decline in biodiversity. For example, golden apple snails prey heavily on native snails, causing a sharp decline in their numbers and even triggering eutrophication in some areas. In agriculture, golden apple snails primarily feed on crops such as rice and lotus roots. Especially during the rice seedling stage, a single adult snail with a shell height of 3.5 cm can consume multiple seedlings daily, resulting in yield reductions of 10%-90%, with losses in severely affected areas often exceeding 50%. Furthermore, golden apple snail excrement pollutes water bodies, further exacerbating the deterioration of the crop growing environment. For human health, the golden apple snail is an intermediate host of Angiostrongylus cantonensis. If the parasites in the snail enter the human body through undercooked snail meat, they may cause erythrocytic meningitis or myelitis, which can be fatal in severe cases.

[0003] To control the golden apple snail, current technologies primarily employ multi-dimensional measures to suppress its reproduction and spread. In terms of agricultural control, crop rotation and deep plowing / drying can disrupt its habitat, while clearing silt and weeds from ditches in winter can reduce the survival rate of overwintering snails. Installing barrier nets at paddy field inlets can effectively prevent the snails from spreading with the water flow. Manual capture involves collecting pink egg masses during peak egg-laying periods or collecting adult snails during field drying. Biological control mainly relies on ecological chain regulation; for example, releasing ducks during the rice growing season allows them to prey on juvenile snails, with a density of 15-30 ducks per acre significantly reducing snail population density. Chemical control requires caution. Commonly used agents include 10% snail granules and 50% molluscicide ethanolamine salt. Application should be timed to the rice leaf-heart stage or transplanting stage, with two applications spaced apart to control snail infestation. Physical control focuses on disrupting reproductive conditions, such as trapping egg masses in the field with bamboo strips and then destroying them, or reducing the hatching rate of egg masses through flood irrigation. In addition, management measures emphasize systematic joint prevention and control, such as establishing regional prevention and control mechanisms, with the government coordinating special funds and action guidelines, combined with public education to raise awareness of prevention and control.

[0004] In summary, the control of golden apple snails requires a combination of ecological principles and agricultural practices. It involves reducing their population density through the synergy of multiple technologies, while also being mindful of the potential environmental impacts of chemical agents. Biological and physical methods should be prioritized for sustainable management. Utility Model Content

[0005] To prevent the rapid reproduction of golden apple snails and avoid the environmental pollution caused by chemical methods of disinfecting them, this application provides a net-type golden apple snail egg capture device. This utility model uses a purely physical method to capture and destroy the eggs of golden apple snails, thereby achieving the technical effect of preventing the large-scale reproduction of golden apple snails from affecting organisms and damaging the ecology.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A net-type golden apple snail egg-catching device includes two opposing net-rolling mechanisms and a catching net connected end to end. The net-rolling mechanism includes a rotating drum, and the catching net is sleeved between the two opposing rotating drums and driven to rotate by at least one of the rotating drums; and at least one clamping device disposed on the catching net to squeeze the two sides of the catching net.

[0008] In order to crush as many golden apple snail eggs as possible and minimize the processing residue of golden apple snail eggs, preferably, the clamping device includes multiple rollers with V-shaped cross sections for crushing golden apple snail eggs, and the moving direction of the catching net is consistent with the convergence direction of the V-shaped rollers.

[0009] More preferably, the clamping device includes a connecting frame for fixing the net winding mechanism, a third column detachably fixedly connected to the connecting frame, the third column having a slit along its length for the net to reciprocate, and a pair of V-shaped swing arms hinged near both ends of the third column, each pair of swing arms being symmetrically installed with the slit as the center; and rollers arranged sequentially along the length of the swing arms are hinged between the two swing arms on the same side.

[0010] To facilitate installation in paddy fields and improve the effectiveness and stability of catching golden apple snail eggs, the net-rolling mechanism preferably includes a support frame, a second column mounted on the support frame for fixing and retractable operation, and a drive mechanism for straightening and driving the net. The drive mechanism includes a drive motor, a rotating drum at the top of which is driven and connected to the drive motor, and a retractable first column rotatably connected to the bottom of the rotating drum.

[0011] To further improve the stability of the capture net and prevent it from tilting during long-term operation, preferably, the two ends of the rotating drum are provided with limiting baffles with a diameter larger than the outer diameter of the rotating drum.

[0012] To reduce driving resistance and ensure smoother collection and destruction of golden apple snail eggs, and to meet driving requirements with a lower energy-consuming drive, preferably, a reducer is provided between the drive motor and the rotating drum, and a bearing is provided between the rotating drum and the first column.

[0013] To avoid slippage caused by excessive viscous material adhering to the net after repeated clamping of golden apple snail eggs, preferably, the surface of the rotating drum has a rubber anti-slip layer.

[0014] To further improve stability, preferably, the lower end of the second column is also fixedly connected with a fork for inserting into and fixing the mud.

[0015] To improve processing efficiency, preferably, the number of clamping devices is one, which are respectively installed on opposite sides of the capture net.

[0016] To further improve driving stability and prevent slippage between the capture net and the drum, preferably, the capture net is a porous plastic mesh with a pore size of 10mm-15mm, and the drum is provided with multiple spherical protrusions to prevent slippage. Beneficial effects

[0017] 1. This utility model uses a conveyable / circulating capture net as a carrier for the egg-laying of golden apple snails, which can quickly and stably destroy the eggs over a large area. This utility model can be applied to the capture of golden apple snail eggs in different scenarios. A single device can capture a large amount of eggs with high efficiency, and it is especially suitable for places with high density of golden apple snails.

[0018] 2. This utility model has a simple and reliable structure, is easy to install, can be reused repeatedly, and its installation environment is almost unaffected by water depth, and can widely cover the existing living and breeding areas of golden apple snails. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the structural isometric drawing of this utility model.

[0021] Figure 2 yes Figure 1 The main view.

[0022] Figure 3 yes Figure 2 A sectional view with the section symbol AA along the center line.

[0023] Figure 4 yes Figure 3 Enlarged view of the structure in area B.

[0024] In the diagram: 1-bracket; 2-drive motor; 3-reducer; 4-rotating drum; 5-first column; 6-limiting stop plate; 7-second column; 8-fork claw; 9-clamping device; 10-catching net; 91-connecting frame; 92-third column; 93-slit; 94-swing arm; 95-roller. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0031] See the instruction manual appendix Figures 1-4 The illustrated net-type golden apple snail egg-catching device includes two opposing net-rolling mechanisms and a catching net 10 connected end to end. The net-rolling mechanism includes a rotating drum 4. The catching net 10 is sleeved between the two opposing rotating drums 4 and is driven to rotate by at least one of the rotating drums 4. It also includes at least one clamping device 9 disposed on the catching net 10 to squeeze both sides of the catching net 10.

[0032] Explanation of working principle:

[0033] The trapping net 10 provided in this embodiment serves as a carrier for the golden apple snail eggs to crawl and lay their eggs. The net 10 has holes to facilitate the snails' crawling. Simultaneously, due to its large area, the net 10 provides ample space for a large number of snails to lay their eggs. During collection and crushing, the net 10 is simply rotated by a winding mechanism. During rotation, the net 10 carries all the golden apple snail eggs attached to it. When the net 10 enters the clamping device 9, the eggs are crushed under the pressure of the clamping device 9 as the rotation continues, causing irreversible damage and preventing hatching. The advantage of this trapping device compared to other trapping devices is that the length of the net 10 can be freely set according to actual needs, allowing for flexible increases / decreases in the trapping area to meet different installation scenarios. Compared to rod-shaped trapping devices, this embodiment is particularly effective at capturing and destroying large-density, large-area golden apple snail eggs. The control method for the wire mesh winding mechanism can utilize existing technologies, such as direct wired control using a simple switch to manually open / close it. Alternatively, without considering cost, a microcontroller can be used for automatic control, operating according to the set time period and frequency of the control circuit, eliminating the need for human intervention. Regardless of the control method used, these are existing technologies and not improvements made in this invention; those skilled in the art can choose flexibly, and these will not be detailed here. The purpose of setting up two sets of wire mesh winding mechanisms is primarily to improve equipment stability and extend its maintenance cycle. Generally, only one winding mechanism is needed to drive the capture net 10, with the other acting as a slave. If either winding mechanism fails, the other slave mechanism can be used as the driver, achieving a one-for-one backup configuration, thus greatly improving equipment stability. Of course, without considering energy consumption, both winding mechanisms can also be driven simultaneously. Example

[0034] The key to preventing the reproduction of golden apple snail eggs lies in causing fundamental and irreversible damage to them. To crush as many golden apple snail eggs as possible and minimize processing residue, in this embodiment, the clamping device 9 includes multiple rollers 95 arranged in a V-shape for compressing the eggs. The moving direction of the catching net 10 is consistent with the converging direction of the V-shaped rollers 95. See details... Figure 4 As shown, with the movement of the capturing net 10, the golden apple snail eggs enter the V-shaped clamping device 9, as... Figure 4On the left side, at this time, due to the large opening size of the clamping device 9, the roller 95 located in the opening may not come into contact with the golden apple snail eggs. However, as the catching net 10 moves towards the narrow part of the clamping device 9, as... Figure 4 On the right side, the golden apple snail eggs are gradually squeezed by the rollers 95 until they reach the last set of rollers 95 that are in direct contact with the surface of the capture net 10. This completely crushes the golden apple snail eggs. It is worth noting that the golden apple snail eggs are not individual, but rather clump together with strong adhesion. Therefore, they are very easy to completely destroy during the squeezing process. The main advantage of using rollers 95 in this embodiment to crush the golden apple snail eggs is that, compared to sliding contact, the freely rotating rollers 95 can apply as little force as possible to the golden apple snail eggs along the direction of movement of the capture net 10, while applying as much squeezing force as possible. This minimizes the problem of the golden apple snail eggs being rubbed off.

[0035] In this embodiment, the clamping device 9 includes a connecting frame 91 for fixing the net winding mechanism, and a third column 92 detachably fixedly connected to the connecting frame 91. The third column 92 has a slit 93 along its length for the net 10 to reciprocate. A pair of V-shaped swing arms 94 are hinged near both ends of the third column 92, and each pair of swing arms 94 is symmetrically installed with the slit 93 as the center. A roller 95 is hinged between the two swing arms 94 on the same side and arranged sequentially along the length of the swing arms 94. See the appendix of the specification for details. Figure 1 , Figure 3 and Figure 4 As shown. After passing through the V-shaped roller assembly, the golden apple snail eggs are completely crushed. However, the mucus from the crushed golden apple snail eggs continues to adhere to the trap net 10. In order not to affect the subsequent egg-laying of golden apple snails by the residue of golden apple snail eggs, most of them are scraped off when the trap net passes through the slit 93. Example

[0036] This embodiment optimizes the structure based on any of the above embodiments. Specifically, to facilitate installation in paddy fields and improve the effectiveness and stability of capturing golden apple snail eggs, this embodiment refers to... Figures 1-4As shown, the net-rolling mechanism includes a support 1, a second retractable column 7 mounted on the support 1 for fixing, and a drive mechanism for straightening and driving the net 10. The drive mechanism includes a drive motor 2, a rotating drum 4 connected to the top of the drive motor 2, and a retractable first column 5 rotatably connected to the bottom of the rotating drum 4. The purpose of making the first column 5 and the second column 7 retractable is to accommodate different water depths; because golden apple snails must lay their eggs above the water surface, it is necessary to ensure that most of the net 10 is above the water surface.

[0037] To further improve the stability of the capture net 10 and prevent tilting during long-term operation, the rotating drum 4 is equipped with limiting baffles 6 at both ends, with a diameter larger than the outer diameter of the rotating drum 4. (See instruction manual) Figure 1 As shown, the limiting baffle 6 can always keep the capture net 10 on the rotating drum 4, preventing it from tilting during long-term use and affecting the subsequent collection and destruction of golden apple snail eggs.

[0038] To reduce driving resistance and ensure smoother collection and destruction of golden apple snail eggs, while also allowing for the use of a lower-energy-consumption actuator to meet driving requirements, in this embodiment, a reducer 3 is also provided between the drive motor 2 and the rotating drum 4, and a bearing is provided between the rotating drum 4 and the first column 5. Since the operating environment is wet, waterproof bearings are preferred, or the area between the rotating drum 4 and the first column 5 is structurally sealed to prevent water from entering the bearing location, thus ensuring proper bearing operation.

[0039] To avoid slippage caused by excessive viscous material adhering to the net 10 after repeated clamping of golden apple snail eggs, in this embodiment, the surface of the rotating drum 4 has a rubber anti-slip layer.

[0040] To further improve stability, in this embodiment, the lower end of the second column 7 is also fixedly connected with a fork 8 for inserting into and fixing the mud.

[0041] To improve processing efficiency, in this embodiment, there are two clamping devices 9, which are respectively installed on opposite sides of the capturing net 10. See the appendix of the instruction manual. Figure 3 As shown. With the above structural configuration, the trapping net 10 only needs to rotate half a turn to completely process the golden apple snail eggs attached to it; that is to say, the process of collecting and crushing the golden apple snail eggs only requires a very short working time, resulting in high processing efficiency and low energy consumption.

[0042] To further improve driving stability and prevent slippage between the capture net 10 and the rotating drum 4, the capture net 10 is made of porous plastic mesh with a mesh size of 10mm-15mm, and the rotating drum 4 is provided with multiple spherical protrusions to prevent slippage.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A net-type golden apple snail egg-catching device, characterized in that: It includes two opposing spinning mechanisms and a capture net (10) connected end to end. The spinning mechanism includes a rotating drum (4). The capture net (10) is sleeved between the two opposing rotating drums (4) and is driven to rotate by at least one of the rotating drums (4). It also includes at least one clamping device (9) disposed on the capture net (10) to squeeze the two sides of the capture net (10).

2. The net-type golden apple snail egg-catching device according to claim 1, characterized in that: The clamping device (9) includes multiple rollers (95) with V-shaped cross sections for squeezing golden apple snail eggs. The moving direction of the catching net (10) is consistent with the converging direction of the V-shaped rollers (95).

3. The net-type golden apple snail egg-catching device according to claim 2, characterized in that: The clamping device (9) includes a connecting frame (91) for fixing the net winding mechanism, and a third column (92) detachably fixedly connected to the connecting frame (91). The third column (92) is provided with a slit (93) along its length for the net (10) to reciprocate. A pair of swing arms (94) mounted in a V-shape are respectively hinged to the two ends of the third column (92). Each pair of swing arms (94) is symmetrically mounted with the slit (93) as the center. The rollers (95) are hinged between the two swing arms (94) on the same side and arranged sequentially along the length of the swing arms (94).

4. A net-type golden apple snail egg-catching device according to any one of claims 1-3, characterized in that: The net winding mechanism includes a bracket (1), a second column (7) mounted on the bracket (1) for fixing and retractable, and a drive mechanism for straightening and driving the net (10); the drive mechanism includes a drive motor (2), a rotating drum (4) whose top is driven and connected to the drive motor (2), and a retractable first column (5) rotatably connected to the bottom of the rotating drum (4).

5. The net-type golden apple snail egg-catching device according to claim 4, characterized in that: The rotating drum (4) is provided with limiting baffles (6) at both ends, with a diameter greater than the outer diameter of the rotating drum (4).

6. The net-type golden apple snail egg-catching device according to claim 4, characterized in that: A speed reducer (3) is also provided between the drive motor (2) and the rotating drum (4), and a bearing is provided between the rotating drum (4) and the first column (5).

7. The net-type golden apple snail egg-catching device according to claim 1, characterized in that: The surface of the rotating drum (4) has a rubber anti-slip layer.

8. The net-type golden apple snail egg-catching device according to claim 4, characterized in that: The lower end of the second column (7) is also fixedly connected with a fork (8) for inserting mud and fixing it.

9. A net-type golden apple snail egg-catching device according to any one of claims 1-3, characterized in that: There are two clamping devices (9), which are installed on opposite sides of the capture net (10).

10. The net-type golden apple snail egg-catching device according to claim 1, characterized in that: The capture net (10) is made of porous plastic mesh with a hole diameter of 10mm-15mm, and the rotating drum (4) is provided with multiple spherical protrusions to prevent slippage.

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