Wiggler prevention and control net shed for rotifer cultivation

Abstract

The utility model discloses a rotifer cultivation wiggler prevention and control net shed which comprises a net shed frame which is built around a rotifer cultivation site. The insect net covers the net shed frame and is provided with an inlet and outlet, and the inlet and outlet can be movably opened and closed in a sealed mode; and the air injection mechanism is mounted at the top of the inlet and outlet and used for injecting air downwards. According to the use mode, a breeding worker stands at the entrance and exit, the air injection mechanism injects air downwards, the entrance and exit are purged through air injection, mosquitoes and other insects cannot get close to the entrance and exit, and then the mosquitoes and other insects can be prevented from entering the net shed frame through the entrance and exit. The rotifer breeding device has the advantages that a rotifer breeding field can be closed, and mosquitoes can be prevented from entering the rotifer breeding device.

Description

Technical Field

[0001] The utility model relates to a mosquito larva control net shed for rotifer cultivation. Background Art

[0002] Rotifers are tiny animals widely distributed in various fresh and brackish water bodies such as lakes, ponds, rivers, and coastal waters. They are not only the initial feed for the zoea larvae of aquatic economic animals such as crabs but also an important feed for aquatic organisms such as brine shrimp, cladocerans, and copepods. At the same time, they are also an excellent feed for larvae such as mosquito larvae (mosquito larvae). Therefore, as long as there are a large number of brine shrimp, cladocerans, copepods, and mosquito larvae in the rotifer cultivation pond, it is very difficult to cultivate a large number of rotifers.

[0003] Currently, in artificial breeding of fish, crabs, etc. in China, great attention is paid to rotifer cultivation. Especially in artificial crab breeding, since rotifers are the initial feed for the zoea larvae of crabs, rotifers have become an essential early animal feed in artificial crab breeding. Moreover, in crab breeding, currently, it is not possible to completely replace rotifers with artificial feeds (such as black powder granules, microparticle feeds, etc.) like in shrimp breeding such as penaeid shrimp. Therefore, to a certain extent, it can be said that the number of rotifers determines the number of seedlings in artificial crab breeding.

[0004] In large-scale rotifer cultivation for artificial crab breeding, brine shrimp, cladocerans, and copepods generally do not have enough eggs in the rotifer cultivation pond because their life cycles are relatively long and the rotifer cultivation pond water has undergone procedures such as filtration and disinfection. And the cultivation time of rotifers is not long. Therefore, brine shrimp, cladocerans, and copepods are hardly the main factors causing the failure of rotifer cultivation in the rotifer cultivation pond.

[0005] However, currently, the sites for rotifer cultivation are usually open or semi-open, and mosquitoes around are likely to enter the rotifer cultivation site. Mosquito larvae hatch from mosquito eggs, have a short reproduction cycle, can reproduce in large numbers in the cultivation pond, and prey on a large number of rotifers, resulting in the failure of rotifer cultivation. Although adding an appropriate concentration of trichlorfon to the rotifer cultivation pond can appropriately control the number of mosquito larvae. However, it is very difficult for the operator to accurately control the concentration of trichlorfon added to the water body to achieve the purpose of effectively controlling the number of mosquito larvae without harming the rotifers. Therefore, in view of the defects of the existing technology, a mosquito larva control net shed for rotifer cultivation that can prevent external mosquitoes from entering the cultivation site has been developed. Summary of the Invention

[0006] The purpose of the utility model is to provide a detachable mosquito larva control net shed for rotifer cultivation in view of the defects of the existing technology.

[0007] To achieve the above purpose of the utility model, the following technical solutions are adopted:

[0008] A mosquito larva prevention and control net shed for rotifer cultivation, comprising a net shed frame which is built around the rotifer cultivation site; an insect net which covers the net shed frame and is provided with an entrance and exit that can be movably opened and sealed; and a jetting mechanism which is installed at the top of the entrance and exit for jetting air downward.

[0009] Furthermore, when there are multiple net shed frames, the multiple net shed frames are arranged at intervals, and a passage is provided between adjacent net shed frames; wherein, the insect net covers the multiple net shed frames and the passage, and the entrance and exit on the insect net is located at the end face of the passage for communicating with the passage.

[0010] Furthermore, a wheel-shaped larva prevention and control net shed of the present utility model further comprises passage supports, and a plurality of passage supports are installed at intervals along the length direction of the passage.

[0011] Furthermore, a wheel-shaped larva prevention and control net shed of the present utility model further comprises an inverted T-shaped door, the entrance and exit is an inverted T-shaped notch, and an inverted T-shaped door is installed at the inverted T-shaped notch, and the inverted T-shaped door is movably opened and sealed.

[0012] Furthermore, the inverted T-shaped door comprises a vertical adhesive tape and a horizontal adhesive tape, and the vertical adhesive tape and the horizontal adhesive tape are arranged in an inverted T shape.

[0013] Furthermore, the vertical adhesive tape comprises a sub-vertical adhesive tape and a mother-vertical adhesive tape, and the sub-vertical adhesive tape and the mother-vertical adhesive tape are adhesively connected to each other; the horizontal adhesive tape comprises a sub-horizontal adhesive tape and a mother-horizontal adhesive tape, and the sub-horizontal adhesive tape and the mother-horizontal adhesive tape are adhesively connected to each other.

[0014] Furthermore, the jetting mechanism comprises an air delivery pipe which is installed with an air valve; jet nozzles, at least one jet nozzle is distributively installed on one side of the air delivery pipe at the air outlet end of the air valve; an induction sensor which is installed close to the jet nozzle; and a controller which is electrically connected to the air valve and the induction sensor.

[0015] Furthermore, the net shed frame comprises an upper beam of the frame; a plurality of vertical support frames which are arranged in parallel at intervals, the vertical support frame comprises a double-layer arc frame and a frame column, both ends of the double-layer arc frame are installed with frame columns, and both ends of the plurality of double-layer arc frames are connected by the upper beam of the frame; longitudinal rods, a plurality of longitudinal rods are connected between adjacent double-layer arc frames, and the plurality of longitudinal rods are arranged at intervals along the arc length direction of the double-layer arc frame; and arc support rods, at least one arc support rod is installed between adjacent double-layer arc frames.

[0016] Furthermore, the rotifer cultivation site comprises a cultivation pond, and at least one oxygen supplement mechanism is installed on the top of the cultivation pond for supplementing oxygen to the cultivation pond.

[0017] Furthermore, the oxygen supplement mechanism includes an oxygen supplement pipe, an oxygen valve, and an air supply pipe. At least one oxygen valve is installed on the oxygen supplement pipe, and an air supply pipe is installed on each oxygen valve. The air supply pipe extends below the water surface of the cultivation pond.

[0018] Advantages of the present utility model over the prior art:

[0019] The present utility model can prevent mosquitoes and other insects from entering. The insect net covers the entire net shed frame, thereby preventing mosquitoes and other insects from entering the net shed frame, and further blocking mosquitoes and other insects from entering the cultivation pond. Moreover, when the cultivation personnel enter through the entrance and exit, the jetting mechanism sprays gas downward, and the sprayed gas realizes downward blowing, which can prevent mosquitoes and other insects from approaching the entrance and exit, and further avoid mosquitoes and other insects from entering the net shed frame through the entrance and exit. Therefore, it can prevent mosquitoes and other insects from laying eggs and breeding mosquito larvae in the rotifer cultivation pond, avoid mosquito larvae from feeding on rotifers and unicellular algae in the pond, and keep the rotifer density above 30 individuals per milliliter. Using the present utility model in the production of rotifer cultivation for artificial crab seedling, it can solve the problem of the initial feed for the zoea stage of crabs, greatly improve the survival rate and emergence rate of crab seedlings, and improve the economic benefits of artificial crab seedling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 Structural schematic diagram of a rotifer cultivation mosquito larvae prevention and control net shed of the present utility model;

[0022] Figure 2 Installation structural schematic diagram between the jetting mechanism and the shed frame of the present utility model;

[0023] Figure 3 Structural schematic diagram of multiple present utility models installed side by side;

[0024] Figure 4 Installation structural schematic diagram between the shed frames of multiple present utility models;

[0025] Figure 5 Structural schematic diagram of the cultivation pond of the present utility model with an oxygen supplement mechanism installed;

[0026] Figure 6 A structural schematic diagram of a clamping film groove of the present utility model;

[0027] The serial numbers in the figure and their corresponding component names:

[0028] 1 - Controller, 2 - Gas pipeline, 3 - Gas valve, 4 - Inductive sensor, 5 - Bracket, 6 - Jet nozzle, 7 - Branch pipe, 8 - Insect net, 9 - Ground beam;

[0029] 10 - Net shed frame, 101 - Double - layer arc frame, 1011 - Lower arc rod, 1012 - Upper arc rod, 1013 - Diagonal brace, 1014 - Connecting rod, 102 - Frame column, 103 - Frame upper beam, 104 - Arc brace, 105 - Longitudinal rod, 106 - Reinforcing column, 107 - Transverse rod;

[0030] 11 - Cultivation pond, 12 - Partition net, 13 - Vertical sticky tape, 14 - Horizontal sticky tape, 16 - Channel bracket, 17 - Pulling rope;

[0031] 18 - Oxygen supplement mechanism, 181 - Oxygen supplement pipe, 182 - Oxygen valve, 183 - Air supply pipe, 19 - Water supply pipe, 20 - Water valve, 21 - Inverted T - shaped door, 22 - Film clamping groove, 221 - Groove body, 222 - Snap ring. Detailed implementation mode

[0032] In order to enable the personnel in the technical field to better understand the technical solutions in this application, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0033] As Figures 1 to 6 shown, a mosquito larva prevention and control net shed for rotifer cultivation includes a net shed frame 10, an insect net 8 and a jetting mechanism. The net shed frame is built around the rotifer cultivation site; the insect net 8 covers the net shed frame 10 and is provided with an entrance and exit, and the entrance and exit can be opened and closed movably and sealed; the jetting mechanism is installed at the top of the entrance and exit and is used for jetting downward.

[0034] The jetting mechanism is used to jet downward when the cultivation staff passes through the entrance and exit, so as to disperse the mosquitoes near the entrance and exit and prevent mosquitoes from entering when the entrance and exit is opened.

[0035] The insect net can be a nylon screen mesh with 40 - 60 meshes / cm 2 It can be understood that when the insect net covers the net shed frame, the insect net has a surplus relative to the bottom of the net shed frame, and this part is rolled up and compacted. The compaction method can be: using a stone slab or an iron plate to press the rolled - up insect net tightly against the ground.

[0036] It should be noted that in actual use, multiple greenhouse frames can be erected, such as 2, 3, 4, 5, 6, etc. A plurality of greenhouse frames 10 are arranged at intervals, and there are passages between adjacent greenhouse frames 10. The insect net 8 covers the plurality of greenhouse frames and the passages between adjacent greenhouse frames. Under the coverage of the insect net, external mosquitoes can be isolated from entering the greenhouse frames and the passages. It can be understood that the greenhouse frames and the passages are interconnected.

[0037] To facilitate the support of the passage insect net covering the passage, a passage support 16 is additionally installed. As Figure 3 , 4 shown, a plurality of passage supports 16 are installed at intervals along the length direction of the passage.

[0038] As Figure 3 , 4 shown, the top of the passage support 16 on the passage can be connected to the insect net 8 by a pulling rope 17. The insect net can be suspended on the passage support 16 through the pulling rope 17.

[0039] As Figure 3 shown, the entrance and exit on the insect net 8 are placed at the end face of the passage for communicating with the passage.

[0040] It should be noted that the air supply system is used to supply air to the jet mechanism. The air supply system can be: an air compressor, a gas storage tank or a compressed air station. It can supply air to the jet mechanism in real time.

[0041] As Figures 1 - 4 shown, a ground beam 9 can be provided around the cultivation pond, and the greenhouse frame is installed on the ground beam 9.

[0042] In some alternative embodiments, a structure for the movable opening and sealing closure of the entrance and exit on the insect net is given. An inverted T-shaped door 21 is additionally installed. The entrance and exit is an inverted T-shaped notch, and the inverted T-shaped door 21 is installed at the inverted T-shaped notch. The inverted T-shaped door 21 can be movably opened and sealed closed.

[0043] When it is necessary to enter the passage, the inverted T-shaped door 21 can be opened to enter the passage. After entering the passage, the inverted T-shaped door 21 is sealed and closed again. When it is necessary to go out of the passage, the inverted T-shaped door 21 is opened again, and then one can walk out of the passage outward, and the inverted T-shaped door 21 is sealed and closed.

[0044] In some alternative embodiments, a structure of the inverted T-shaped door is given. The inverted T-shaped door 21 includes a vertical velcro strip 13 and a horizontal velcro strip 14, and the vertical velcro strip 13 and the horizontal velcro strip 14 are arranged in an inverted T shape.

[0045] The vertical hook-and-loop fastener 13 includes a male vertical hook-and-loop fastener and a female vertical hook-and-loop fastener, and the male vertical hook-and-loop fastener and the female vertical hook-and-loop fastener are adhesively connected to each other; the horizontal hook-and-loop fastener 14 includes a male horizontal hook-and-loop fastener and a female horizontal hook-and-loop fastener, and the male horizontal hook-and-loop fastener and the female horizontal hook-and-loop fastener are adhesively connected to each other.

[0046] It can be understood that the insect net 8 is correspondingly provided with an inverted T-shaped cut. The cut includes a vertical cut and a horizontal cut. A male vertical hook-and-loop fastener is installed on one side of the vertical cut, and a female vertical hook-and-loop fastener is installed on the other side. By adhesively connecting the male vertical hook-and-loop fastener and the female vertical hook-and-loop fastener correspondingly, a sealed connection is achieved, and mosquitoes can be prevented from entering through the vertical cut. A male horizontal hook-and-loop fastener is installed on one side of the horizontal cut, and a female horizontal hook-and-loop fastener is installed on the other side. By adhesively connecting the male horizontal hook-and-loop fastener and the female horizontal hook-and-loop fastener correspondingly, a sealed connection is achieved. Separating the male vertical hook-and-loop fastener from the female vertical hook-and-loop fastener and the male horizontal hook-and-loop fastener from the female horizontal hook-and-loop fastener can open the vertical cut and the horizontal cut. At this time, by rolling up the insect net at the vertical cut and the horizontal cut, an entrance and exit can be formed, and one can enter or exit the net shed or the passage.

[0047] One structure of the vertical hook-and-loop fastener 13 and the horizontal hook-and-loop fastener 14 can be: Velcro.

[0048] In some embodiments of the present disclosure, a structure of the air jet mechanism is given. As Figures 1 - 4 shown, the air jet mechanism includes an air delivery pipe 2, an air jet nozzle 6, an induction sensor 4, and a controller 1. The air delivery pipe 2 is provided with a gas valve 3; at least one air jet nozzle 6 is distributively installed on the air delivery pipe 2 on the side of the outlet end of the gas valve 3; the induction sensor 4 is installed close to the air jet nozzle 6; the controller 1 is electrically connected to the gas valve 3 and the induction sensor 4.

[0049] One structure of the induction sensor can be an infrared sensor. It is used to monitor whether there is anyone at the entrance and exit of the insect net. When someone is sensed, the induction sensor sends a data signal to the controller. When the controller receives this data signal, it controls the gas valve to open, and the air delivery pipe 2 delivers air to the air jet nozzle 6, and the air is ejected downward through the air jet nozzle 6. When a person leaves the detectable range of the induction sensor, the controller controls the gas valve to close, and the air jet nozzle stops jetting air outward.

[0050] It can be understood that the opening time of the gas valve 3 can be set on the controller, for example, it can be set to 5 to 10 minutes. When the gas valve is opened to the set time, the controller controls the gas valve to close. One can only enter or exit the net shed when the jetting state is maintained, so that mosquitoes and other insects cannot approach, and it can be avoided that mosquitoes enter through the entrance and exit when entering and exiting.

[0051] As Figures 1 - 4 shown, an installation structure of the induction sensor is given. A bracket 5 is additionally installed, and the bracket 5 is installed on the air delivery pipe 2 and is used to support and install the induction sensor.

[0052] AsFigures 1 - 4 As shown, an installation structure of a jet nozzle is given. A branch pipe 7 is additionally installed. At least one branch pipe 7 is distributively installed on one side of the outlet end of the gas valve 3 on the gas transmission pipe 2, and the branch pipe 7 is horizontally and perpendicularly connected to the gas transmission pipe. The branch pipe extends outward relative to the net shed frame, which is beneficial for better jetting gas downward. It can be understood that the jet nozzle is spaced from the insect net, which is beneficial for increasing the coverage area of the downward jetting gas.

[0053] Working mode:

[0054] The cultivation personnel stand at the inverted T-shaped door 21 on the insect net 8, trigger the induction sensor 4 to work, and the induction sensor 4 sends a data signal to the controller. When the controller receives this data signal, it controls the gas valve 3 to open, and the gas transmission pipe 2 introduces gas. The gas is distributed into each branch pipe 7 through the gas transmission pipe 2, and the jet nozzle 6 installed on the branch pipe 7 sprays gas outward. The gas is blown downward, so that mosquitoes cannot approach the inverted T-shaped door 21. At this time, the cultivation personnel can open the inverted T-shaped door 21, enter the net shed frame or the passage through the inverted T-shaped door 21, and then close the inverted T-shaped door 21. During this process, the gas valve 3 remains open, and the jet nozzle 6 keeps spraying gas outward, which can prevent mosquitoes from following the cultivation personnel into the net shed frame or the passage. When the cultivation personnel leave the induction range of the induction sensor, the induction sensor stops working, and the controller controls the gas valve to close.

[0055] It should be noted that the time for the gas valve to be delayed in closing can be set to 5 to 10 seconds on the controller. That is, when the induction sensor stops working, the gas valve still remains open to achieve delayed closing. When the delayed closing time reaches the set time, the controller controls the gas valve to close. The delayed closing of the gas valve is beneficial for the jet nozzle to continue spraying gas outward, and thus can maintain the blowing for a certain time.

[0056] In some embodiments of the present disclosure, a structure of a net shed frame is given. As Figure 2 、 4 shown, the net shed frame 10 includes an upper beam 103 on the frame, a plurality of vertical support frames, a longitudinal rod 105, and an arc support rod 104. The plurality of vertical support frames are arranged in parallel at intervals. The vertical support frame includes a double-layer arc frame 101 and a frame column 102. Frame columns 102 are installed at both ends of the double-layer arc frame 101, and both ends of the plurality of double-layer arc frames 101 are connected by the upper beam 103 on the frame; adjacent double-layer arc frames 101 are connected by multiple longitudinal rods 105, and the multiple longitudinal rods 105 are arranged at intervals along the arc length direction of the double-layer arc frame 101; at least one arc support rod 104 is installed between adjacent double-layer arc frames 101.

[0057] Both sides of the plurality of vertical support frames are connected by the upper beam 103 on the frame, which is beneficial for the vertical support frames to be stably erected and supported.

[0058] The plurality of double-layer arc frames 101, arc support rods 104, and longitudinal rods 105 can effectively support the insect net to cover the net shed frame.

[0059] The double-layer arc frame 101 includes a lower arc rod 1011, an upper arc rod 1012, a diagonal brace 1013 and a connecting rod 1014. The lower arc rod 1011 and the upper arc rod 1012 are arranged in parallel at intervals. A plurality of connecting rods 1014 are installed at intervals between the lower arc rod 1011 and the upper arc rod 1012. Diagonal braces 1013 are installed on both sides of one end of each connecting rod 1014. The connection points of adjacent connecting rods 1014 and diagonal braces are offset from each other.

[0060] The number of arc braces 104 installed between adjacent double-layer arc frames 101 can be 1, 2, 3, 4, 5, 6, 7 or 8, etc. When a plurality are installed, they are arranged side by side at intervals.

[0061] The number of longitudinal rods 105 installed can be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20, etc.

[0062] The combined use of a plurality of longitudinal rods 105 and two upper beam frames 103 can make the installation of multiple vertical support frames stable. The combined use of a plurality of longitudinal rods 105, two upper beam frames 103 and multiple vertical support frames can effectively support the insect net.

[0063] It should be noted that a plurality of nylon ropes can be provided on the insect net. The middle part of the nylon rope is fixed to the insect net, and both ends are free. When the insect net covers the net shed frame, the insect net is tied and fixed to the double-layer arc frame 101, the frame column 102, the upper beam frame 103, the longitudinal rod 105, the arc brace 104 and the ground beam 9 through a plurality of nylon ropes.

[0064] It can be understood that the insect net can also be adhesively fixed to the ground beam through a magic tape. The magic tape includes a male magic tape and a female magic tape. The female magic tape can be fixed to the ground beam, and the male magic tape is arranged on the insect net. When the male magic tape and the female magic tape are adhesively connected, the insect net and the ground beam are hermetically and fixedly connected through the magic tape. When the male magic tape and the female magic tape are separated, the insect net can be disconnected from the ground beam.

[0065] In some embodiments of the present disclosure, the rotifer cultivation site includes a cultivation pond 11, and at least one oxygen supplement mechanism 18 is installed on the top of the cultivation pond 11. The oxygen supplement mechanism 18 is used to supplement oxygen to the cultivation pond 11.

[0066] It should be noted that the oxygen supplement mechanism is connected to the gas supply system, and the gas supply system provides oxygen to the oxygen supplement mechanism.

[0067] A structure of the oxygen supplement mechanism is given. Such as Figure 5As shown, the oxygen supplement mechanism 18 includes an oxygen supplement pipe 181, an oxygen valve 182, and an air delivery pipe 183. At least one oxygen valve 182 is installed on the oxygen supplement pipe 181, and an air delivery pipe 183 is installed on each oxygen valve 182. The air delivery pipe 183 extends below the water surface of the cultivation pond.

[0068] As Figure 5 shown, the number of oxygen supplement mechanisms that can be installed is 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, etc. Of course, it is not limited to this. The appropriate number of oxygen supplement mechanisms can be selected and installed according to the specifications of the cultivation pond.

[0069] The number of oxygen valves 182 that can be installed on the oxygen supplement pipe 181 can be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20, etc.

[0070] When oxygen needs to be supplemented into the cultivation pond 11, the oxygen valve is opened, and the gas in the oxygen supplement pipe is input into the air delivery pipe through the oxygen valve. The air delivery pipe then guides the gas into the water body of the cultivation pond, realizing the supplementation of oxygen to the water body of the cultivation pond and increasing the dissolved oxygen content in the water body of the cultivation pond.

[0071] It should be noted that the air supply pipe introduced by the air supply system to the oxygen supplement mechanism penetrates through the insect net and is connected to the oxygen supplement pipe. The connection between the insect net and the air supply pipe is hermetically connected. One connection method is as follows: The insect net overlaps a small section along the circumferential surface of the air supply pipe to form a net cylinder that is sleeved on the air supply pipe, and then the net cylinder is clamped on the air supply pipe using a pipe clamp.

[0072] As Figures 1 - 5 shown, a partition net 12 can be installed on the cultivation pond 11. The cultivation pond can be divided into multiple cell cultivation ponds by installing the partition net as needed. The cultivation pond is used for stocking rotifers, and the inoculation density is 2 - 5 individuals per milliliter.

[0073] As Figure 5 shown, in order to facilitate water replenishment to the cultivation pond, a water replenishment pipe 19 and a water valve 20 are additionally installed. The water replenishment pipe 19 extends and is installed at the top of the cultivation pond, and a water valve 20 is installed. Opening the water valve 20 can replenish water to the cultivation pond. Closing the water valve 20 stops water replenishment to the cultivation pond. It can be understood that the water replenishment pipe can extend to the cultivation pond in a buried pipe manner.

[0074] One connection method between the insect net and the cultivation pond can be: The insect net 8 is fixed on the outer side surface of the cultivation pond 11 through a card film groove 22. The card film groove can be obtained by purchasing in the market.

[0075] As Figure 6 shown, the card film groove 22 includes a groove body 221 and a snap spring 222 clamped in the groove body 221. During installation, the groove body 221 can be first fixed on the cultivation pond 11 using self - tapping screws or expansion nails, and then the insect net 8 is fixed on the groove body through the snap spring 222.

[0076] It should be noted that the net shed net cover should be checked once a day for damage and repaired in time; during the seasons when seedlings are not grown, the net cover should be replaced, cleaned, dried and stored for future use.

[0077] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of this utility model creation.

Claims

1. A rotifer breeding mosquito larvae prevention and control net shed, characterized in that: include A net shed (10), wherein the net shed is built around the rotifer cultivation site; An insect net (8), the insect net (8) is covered on the net shed frame (10) and is provided with an entrance and exit, the entrance and exit can be movably opened and sealed closed; The jet mechanism is installed on the top of the inlet and outlet and is used for jetting downwards.

2. The rotifer cultivation mosquito larvae prevention and control net shed according to claim 1, characterized in that: When there are a plurality of net scaffolding frames (10), the plurality of net scaffolding frames (10) are arranged at intervals, and passages are provided between adjacent net scaffolding frames (10); The insect net (8) covers a plurality of net racks (10) and the passage, and the entrance and exit on the insect net (8) are arranged on the end surface of the passage for communicating with the passage.

3. The rotifer cultivation mosquito larvae prevention and control net shed according to claim 2, characterized in that: It also comprises a channel support (16), wherein a plurality of channel supports (16) are installed at intervals along the length direction of the channel.

4. The rotifer cultivation mosquito larvae prevention and control net shed according to claim 1, characterized in that: It also comprises an inverted T-shaped door (21), the entrance and exit are inverted T-shaped cutouts, the inverted T-shaped cutouts are equipped with an inverted T-shaped door (21), and the inverted T-shaped door (21) can be movably opened and sealed closed.

5. The rotifer cultivation mosquito larvae prevention and control net shed according to claim 4, characterized in that: The inverted T-shaped door (21) comprises a vertical hook and loop fastener (13) and a horizontal hook and loop fastener (14), and the vertical hook and loop fastener (13) and the horizontal hook and loop fastener (14) are arranged in an inverted T shape.

6. The rotifer cultivation mosquito larvae control net shed according to claim 5, characterized in that: The vertical hook and loop fastener (13) comprises a sub-vertical hook and loop fastener and a main vertical hook and loop fastener, and the sub-vertical hook and loop fastener are bonded and connected to each other; The transverse hook and loop fastener (14) comprises a sub-transverse hook and loop fastener and a main transverse hook and loop fastener, and the sub-transverse hook and loop fastener and the main transverse hook and loop fastener are bonded and connected to each other.

7. The rotifer cultivation mosquito larvae control net shed according to claim 1, characterized in that: The jet mechanism includes An air delivery pipe (2), wherein the air delivery pipe (2) is provided with an air valve (3); An air nozzle (6), wherein at least one air nozzle (6) is installed on the air delivery pipe (2) on one side of the air outlet end of the air valve (3); an inductive sensor (4), the inductive sensor (4) being installed close to the air nozzle (6); and A controller (1), wherein the controller (1) is electrically connected to the gas valve (3) and the inductive sensor (4).

8. The rotifer cultivation mosquito larvae control net shed according to claim 1, characterized in that: The net scaffold (10) comprises Put up the beam (103); A plurality of vertical support frames, the plurality of vertical support frames are arranged in parallel and at intervals, the vertical support frames comprising a double-layer arc frame (101) and a frame column (102), the frame columns (102) are installed at both ends of the double-layer arc frame (101), and the two ends of the plurality of double-layer arc frames (101) are connected by a frame beam (103); Longitudinal rods (105), adjacent double-layer arc frames (101) are connected by a plurality of longitudinal rods (105), and the plurality of longitudinal rods (105) are arranged at intervals along the arc length direction of the double-layer arc frames (101); and Arc support rod (104), at least one arc support rod (104) is installed between adjacent double-layer arc frames (101).

9. The rotifer cultivation mosquito larvae prevention and control net shed according to claim 1, characterized in that: It also comprises a membrane holder tank (22), the rotifer cultivation site comprises a cultivation pool (11), at least one oxygen supply mechanism (18) is installed on the top of the cultivation pool (11), and the oxygen supply mechanism (18) is used to supply oxygen to the cultivation pool (11); The insect net (8) is fixedly connected to the cultivation pool (11) via a membrane clamping groove (22).

10. The rotifer cultivation mosquito larvae control net shed according to claim 9, characterized in that: The oxygen supply mechanism (18) comprises an oxygen supply pipe (181), an oxygen valve (182) and an air supply pipe (183); at least one oxygen valve (182) is installed on the oxygen supply pipe (181); each oxygen valve (182) is installed with an air supply pipe (183); and the air supply pipe (183) extends below the water surface of the cultivation pool.

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