CN223694669U - Novel ampullaria gigas trapping device - Google Patents

Abstract

This utility model discloses a novel golden apple snail trapping device, including a trapping curtain and a trapping box. The trapping box has multiple trapping openings on all four sides, and each trapping opening has a frame. A trapping curtain that can be flipped inwards is connected to the frame via a hinged pin. Considering environmental protection, this utility model employs a trapping strategy. A box is constructed with bait favored by golden apple snails placed in the center of the bottom to lure them in. A one-way door structure is used, allowing adult golden apple snails to enter but not exit. The one-way door is a curtain-like structure that can be opened and closed, allowing snails to freely enter and exit through the gaps. Adult snails are captured and cannot reproduce, while juvenile snails grow up and are subsequently captured, thus controlling and eliminating golden apple snails. The trapping openings on all four sides result in high trapping efficiency, and the trapping curtains seal the openings.

Description

Novel ampullaria gigas trapping device

Technical Field

The utility model relates to the related field of ampullaria gigas trapping devices, in particular to a novel ampullaria gigas trapping device.

Background

The ampullaria gigas is taken as a worldwide invasive organism, is listed as a global list of 100 malignant foreign invasive species by the world natural protection alliance (IUCN) in 2000, and is the only freshwater snail. The national environmental protection agency of the original country listed ampullaria gigas as the first foreign species to invade china in 2003, one of the 16 most harmful foreign species (Huang Dana et al, 2018). In 2022, it was listed in the "important management of foreign invasive species directory" issued by the agricultural rural area. The damage of the ampullaria gigas is mainly reflected in 3 aspects of agricultural production, biodiversity and human health, namely, the damage of crops, the reduction of yield, the damage of biodiversity, the influence of the function of an ecological system and the transmission of diseases;

the existing treatment method comprises the following steps:

(1) Agricultural control, namely shallow water irrigation is adopted to prevent the ampullaria gigas from spreading along with water flow caused by large water irrigation. Draining water and drying in the sun in time, reduce the survival rate of young snails. And (3) finishing the ditch in winter, cleaning sludge, and reducing the number of the ampullaria gigas after winter. The ampullaria gigas can kill the ampullaria gigas by using the measures of paddy field improvement, paddy field rotation, etc.

(2) And (3) physical control, namely installing a blocking net at the inlet of an irrigation ditch and the water inlet and outlet of the rice field to prevent the ampullaria gigas from entering the field along with water. Wood strips or bamboo chips are inserted in the field to induce the ampullaria gigas to spawn, and egg masses are periodically removed for destruction.

(3) Biological control, namely adopting a rice-duck co-cropping mode, and utilizing ducks to prey against the ampullaria gigas. Aquatic animals such as black carp, carp and the like are put in the paddy rice field to predate the ampullaria gigas.

(4) Chemical prevention and treatment, namely, prevention and treatment are carried out by using metaldehyde granules, molluscacidal amine ethanolamine salt wettable powder or tea seed cakes and other medicaments. The pesticide is used strictly according to pesticide label specification, and pesticide use safety interval period is executed. Preventing and controlling medicines in fields where fish and shrimp are intercropped is forbidden, and preventing the injury to aquatic animals.

The effect and efficiency of preventing and controlling the ampullaria gigas by the current means are to be improved, namely, the living body crossing capability of the ampullaria gigas is good, the agricultural prevention and control cannot control the ampullaria gigas from sources, the physical prevention and control egg removal is time-limited, the ampullaria gigas can lay eggs and climb the branches on the wall, the barrier net cannot block the ampullaria gigas, the biological prevention and control can see that ducks and fishes do not like the ampullaria gigas, the chemical prevention and control can cause new environmental pollution, and the original species can be killed by mistake.

Disclosure of utility model

The utility model aims to provide a novel ampullaria gigas trapping device, which aims to solve the problems that the effect and efficiency of preventing and curing ampullaria gigas are required to be improved, agricultural prevention and curing cannot control the ampullaria gigas from sources, physical prevention and curing are time-limited, the ampullaria gigas can lay eggs and climb on the wall, a blocking net cannot block the ampullaria gigas, biological prevention and curing can see some data to find ducks, fishes do not like the ampullaria gigas, chemical prevention and curing can cause new environmental pollution, and native species can be killed by mistake.

The novel ampullaria gigas trapping device comprises a trapping door curtain and a trapping box, wherein a plurality of trapping openings are formed in four surfaces of the outer side of the trapping box, a trapping opening frame is arranged on the outer side of the trapping opening, and the trapping door curtain capable of overturning inwards is arranged on the trapping opening frame through a hinge pin.

In a further embodiment, the device further comprises a float, wherein a float fixing rod is arranged at the bottom of the float and is in rotary connection with the trapping door curtain.

In a further embodiment, a stop lever for blocking the trapping door curtain is arranged in the trapping box.

In a further embodiment, the top of the trapping box is provided with ventilation holes, the bottom of the trapping box is provided with a weighting layer, and the corner of the top end of the trapping box is provided with a rope hanging ring.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the utility model, in consideration of environmental protection, a trapping strategy is adopted, a box body is manufactured, a bait which is liked by the ampullaria gigas is placed in the middle of the bottom, the ampullaria gigas is attracted to enter, a one-way door structure is arranged, the adult ampullaria gigas can only enter and not exit, the one-way door is in a door curtain mode and can be opened and closed, so that the river snails can freely enter and exit through a door curtain gap, the adult snails can not be reproduced after being trapped, and young snails continue to be trapped after growing, thereby controlling and eliminating the ampullaria gigas.

2. The four surfaces of the utility model are provided with the trapping openings, the trapping efficiency is higher, the trapping openings are sealed by the trapping door curtain, the buoys are arranged by the buoys fixing rods, the trapping door curtain can be controlled in a self-balancing way by the buoys, the trapping door curtain can be prevented from being opened under the action of gravity, and the blocking effect of the trapping door curtain is improved.

3. The bait is used for attracting the ampullaria gigas, the one-way door is arranged, the ampullaria gigas can only enter and cannot exit, a certain gap is reserved to ensure that the local original ampullaria gigas and the small fish can freely enter and exit, false killing is avoided, the box body is low in cost, simple to manufacture and convenient to place, the box body does not need to be watched, the box body can be placed for a plurality of days, traps of different numbers are placed according to different numbers of the ampullaria gigas, the depth of each trap is adjustable, the box body can be placed in a water area far away from a water bank through a hack lever, the floating ball can be placed in a suspended mode, and the labor, material resources and financial burden of the ampullaria gigas treatment can be reduced through lower cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic view of the structure of the single trap door curtain of the present utility model when installed.

In the figure, 1, a float, 2, a float fixing rod, 3, a trapping door curtain, 4, a hinge pin rod, 5, a stop lever, 6, a trapping port frame and 7, a trapping box.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to figures 1-2, the novel ampullaria gigas trapping device comprises a trapping door curtain 3 and a trapping box 7, wherein an air hole is formed in the top of the trapping box 7, a weighting layer is arranged at the bottom of the trapping box 7, a rope hanging ring is arranged at the corner of the top end of the trapping box 7, a plurality of trapping openings are formed in four surfaces on the outer side of the trapping box 7, a trapping opening frame 6 is arranged on the outer side of the trapping opening frame 6, the trapping door curtain 3 capable of overturning inwards is arranged on the trapping opening frame 6 through a hinge pin 4, and a stop lever 5 for blocking the trapping door curtain 3 is arranged in the trapping box 7.

The novel floating device is characterized by further comprising a float 1, wherein a float fixing rod 2 is arranged at the bottom of the float 1, and the float fixing rod 2 is rotationally connected with a trapping door curtain 3.

The structure material and the manufacturing are that the trapper is designed into a closed box body structure, the box body material can be acrylic, plastic and other materials which are not easy to corrode, the holes can be made or porous plates can be found, in order to ensure that the box body is smoothly sunk into the water bottom and is convenient to lift, the holes (round holes and square holes can be formed) of the box body ensure good air permeability and water permeability, and a proper amount of counter weight such as cement blocks is added to the box bottom, so that the stability is improved. The box body material can be formed by hot bending, the joint adopts welding or bonding modes such as ultrasonic wave, the accessory does not bear large load, and the box body material can be manufactured by using the bonding mode.

The trapper opening and closing mechanism is characterized in that the trapper opening and closing structure is arranged in a door curtain mode, opening and closing are achieved through a rotating shaft fixed to a box body (the rotating shaft can be arranged inside and outside and in the middle of the door curtain), the top of the trapper opening and closing structure is arranged outside the box body and is higher than a box body door frame, the door curtain is prevented from opening from inside to outside, the door curtain is distributed like a suspended fence, the suspended height is about 20-50mm, the gap is about 5-30mm, the suspended and gap can ensure that the original river snails can freely enter and exit, the height of the river snail body lattice is limited, and the door curtain cannot be opened from inside to outside, so that the specific trapping of the river snails is achieved. Under normal conditions, the door curtain can be locked from inside to outside due to dead weight, and one problem is that when one side of the box body is inclined, the door on the corresponding side can be opened inwards due to dead weight, the gap at the bottom of the door curtain can enable internal ampullaria gigas to escape outwards, so that the situation is prevented, a float is arranged at the position below the rotating shaft outside the door curtain, the float is installed on the door curtain through a fixing rod and the rotating shaft, the door curtain can freely rotate, and the door curtain is guaranteed to be pulled back to a locking position through the buoyancy of the float when the box body is inclined. The float fixing rod needs to be rigid, the guiding is correct, and the mutual winding can be avoided. The opening and closing mechanism is used for ensuring that the trap is not limited by the receiving and placing angle, so that the purpose of accurately controlling the ampullaria gigas is realized.

The device is used for winding and unwinding, the depth degree is adjusted through ropes (nylon ropes with better corrosion resistance are recommended to be used) fixed at four corners of the top of the box body, and the floating ball and the bamboo poles for fish culture can be used for realizing suspension and near-far placement according to the water conditions. The area can be selected from the ampullaria gigas egg gathering area, or river bank, water grass dense area, so as to improve the capturing rate, and bait can be bait or cooked rice. The trapping time can be long or short, and even if the bait goes bad, the bait still has temptation to the snail.

When the novel anti-corrosion trapping device is used, trapped food is added into the trapping box 7, the trapping box 7 is guided to the water bottom through the anti-corrosion rope, the trapping opening is sealed through the trapping door curtain 3, after the ampullaria gigas smell the food, the trapping door curtain 3 is pushed to push the trapping door curtain 3 outwards, the trapping door curtain 3 is opened inwards under the action of the hinge pin 4, the ampullaria gigas enter the trapping box 7, the trapping door curtain 3 cannot be opened from inside to outside, the blocking limit is carried out through the blocking rod 5, the entering ampullaria gigas cannot escape from the trapping box 7, so that trapping is completed, the trapping door curtain 3 can be prevented from being opened under the action of gravity in an inclined state through the float 1, the float 1 can be inclined towards the other side, and then the trapping door curtain 3 is pulled to be attached to the trapping opening through the float fixing rod 2.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (4)

1. The utility model provides a novel ampullaria gigas trapper, includes trapper curtain (3) and trapper box (7), its characterized in that, four faces in trapper box (7) outside all are equipped with a plurality of trapping mouths, the outside of trapping mouths is equipped with trapper mouth frame (6), trapper mouth frame (6) are last to be equipped with through articulated round pin pole (4) can inwards overturn trapper curtain (3).

2. The novel ampullaria gigas trapping device according to claim 1, further comprising a buoy (1), wherein a buoy fixing rod (2) is arranged at the bottom of the buoy (1), and the buoy fixing rod (2) is rotatably connected with a trapping door curtain (3).

3. The novel ampullaria gigas trapping device according to claim 1, wherein a blocking rod (5) for blocking the trapping door curtain (3) is arranged in the trapping box (7).

4. The novel ampullaria gigas trapping device according to claim 1, wherein the top of the trapping box (7) is provided with ventilation holes, the bottom of the trapping box (7) is provided with a weighting layer, and the corner of the top end of the trapping box (7) is provided with a rope hanging ring.