Device for collecting roes of reef fishes

Abstract

The invention discloses a device for collecting roes of reef fishes, and belongs to the technical field of fish breeding, the device comprises a collector, the main body of the collector is of a cylindrical structure, one end of the collector is open and provided with a guide pipe, the guide pipe is externally connected with a filter assembly, the other end of the collector is provided with a cover plate, the outer side is provided with a propeller thruster, and the inner side is provided with a baffle; a water pump is installed on the baffle and connected with one end of a water pumping pipe, the other end of the water pumping pipe is connected to the outside of the collector, a cylinder is arranged in the collector, and the water pump is separated from the cylinder through an obliquely-arranged filter screen; the gravity center of the ship-shaped floater is at the bottom, a buoy is fixedly connected to the lower portion of the ship-shaped floater, and the floater is connected with the top of the collector through a telescopic pipe. The roe collecting device is suitable for collecting roes of reef fishes, consumed manpower and material resources are few, roe damage is small, long-time continuous roe collecting can be achieved, and the roe collecting efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fish breeding, and in particular relates to a device for collecting eggs of reef fish. Background Art

[0002] Reef fish are the target of aquaculture and fishing, either because of their delicious meat and high edible value, or because of their beautiful body shape and bright colors and high ornamental value. Fish reefs are the cornerstones of reef fish survival and provide spawning grounds for them. The eggs of migratory fish species are usually non-sticky, the egg particles are separated and can float freely, while the eggs of settled fish species are usually sticky, and the eggs are either attached to the substrate or adhered to each other in a mass. Non-sticky eggs usually have a thinner egg membrane and a simpler outer structure; sticky eggs have a thicker and more complex egg membrane, which will undergo physical and chemical changes when in contact with water, allowing them to adhere to different substrates. At present, the efficiency of collecting reef fish eggs using existing technologies is not high, and sticky eggs are easily damaged during the collection process.

[0003] The Russian patent with the patent number RU171294U1 introduces a fish egg collection technology. The main body is a water tank, which is divided into two compartments. One compartment is equipped with a water pump, and the other compartment is used to collect fish eggs. A filter is installed between the two compartments. The mesh size is smaller than the diameter of the fish eggs to be collected. The water is pumped out by the water pump to form a pressure difference, and the fish eggs are sucked into the water tank along with the water flow. This technology can be used to collect sticky eggs and non-sticky eggs, but because the position of the water tank is fixed after it is put into use, it is less efficient for collecting fish eggs attached to the substrate. Summary of the invention

[0004] The purpose of the present invention is to provide a device for collecting fish eggs of reef fish, so as to realize the rapid collection of non-sticky eggs and sticky eggs, reduce the damage to the fish eggs during the collection process, and improve the survival rate of the fish eggs.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a device for collecting fish eggs of reef fish, comprising: A collector, one end of which has an opening and is provided with a guide tube, and the collector includes a first cylinder and a second cylinder that are detachably connected, and a second filter screen that is inclined to the axis of the first cylinder is provided at the connection between the first cylinder and the second cylinder; an opening is provided at one end of the first cylinder and is equipped with a guide tube, and the other end of the first cylinder has an inclined incision, and the second filter screen is adapted to the incision, and a cover plate extends outward from the incision, and the second cylinder can be inserted into the incision to communicate with the inside of the first cylinder to form a receiving space, and a propeller propeller is provided on the second cylinder, and a baffle is provided inside the second cylinder, and the baffle can be connected and fixed to the edge of the second filter screen. A water pump is built into the second cylinder, and the water pump is assembled on the side of the baffle, and the water pump is connected to a water pump, and the water pump is provided on the outside of the second cylinder, and a cylinder is provided inside the first cylinder, and the cylinder is arranged adjacent to the inner wall of the first cylinder and can rotate relative to the inner wall of the first cylinder.

[0006] The invention places the collector underwater, and pumps the water in the collector to the outside of the collector through a water pump and a water pumping pipe, thereby forming a negative pressure at the opening of the collector, and the eggs of reef fish are sucked into the collector through the filter assembly and the guide pipe. The spiral structure of the guide pipe can guide the direction of the water flow, so that it spirals forward. The cylinder in the collector can only rotate due to the limit. Under the impact of the water flow, the cylinder makes a circular motion. The kinetic energy of the water flow is partially converted into the kinetic energy of the cylinder, which enables the fish eggs to be distributed as evenly as possible on the inner wall of the collector. In this way, it is avoided that the fish eggs are excessively concentrated in the center of the cylinder during the process of collecting and entering the cylinder, causing part of the fish eggs to be inactivated after being compressed. The fish eggs are further dispersed to the inner wall of the cylinder, that is, the inner wall direction of the collector. In this way, it is helpful for the fish eggs to contact with the second filter screen in batches during the process of contacting the fish eggs, thereby reducing the damage of the second filter screen to the fish eggs and reducing the probability that the diameter of the compressed part of the fish eggs changes and cannot pass through the second filter screen. In addition, by setting the second filter screen to be inclined, the rotating cylinder solution can be coordinated to reduce the possibility of excessive concentration of fish eggs caused by the centrifugal effect of the collector during the movement inside the collector. In this way, the problem of local blockage of the second filter screen caused by the concentration of fish eggs is solved, thereby improving the water filtering function and filtering efficiency of the second filter screen.

[0007] The second filter placed obliquely in the collector is a fine-mesh filter that can prevent fish eggs from entering the water pump. The propeller thruster on the outside of the collector can make it move in the water, thereby improving the collection efficiency.

[0008] In order to maintain balance, a float is connected to the outside of the collector through a telescopic tube, and buoys are connected to both sides of the float; one end of the float has an opening structure and is concave inward, and the other end of the float opening is connected to the telescopic tube, and the buoys are arranged on both sides of the float near the connection between the telescopic tube and the float. The center of gravity of the float is at the bottom, so that it can maintain balance in the case of large wind and waves. In order to meet the collection of fish eggs at different depths in the water, the telescopic tube is used to adjust the depth of the collector in the water. Further, the buoy is a plate structure that can cooperate with the float to improve the stability of the device in the water. For surface waves, the float and the buoy can be effectively consumed and when the buoy contacts the surface waves, it is conducive to guiding the change of the flow direction of the water surface and the water body below the buoy. For example, the water body flowing in the horizontal direction uses the water body waves to prompt the buoy to swing, and then the buoy affects the fluid in the horizontal flow direction below it, so that its flow direction changes to a tendency, which helps to prompt the fish eggs on the water surface or the upper water layer to move downward, and improve the collection efficiency of the collector.

[0009] Optionally, the guide tube is built with a filter assembly, the filter assembly includes a first filter screen, the first filter screen is a semicircular structure, there are at least two first filter screens and they are staggered on the inner wall of the guide tube, and there is a spacing distance between adjacent first filter screens. A circular ring fixedly connected to the inner wall of the guide tube inlet is provided on the inner wall, a rotatable three-leaf blade is provided on the inner side of the circular ring, the circular ring has a support rod, the three-leaf blade is provided at the center of the circular ring, and has a rotating shaft connected to the support rod, and a rotating part is provided at the connection. Layered filtration can reduce the damage to the filter screen caused by water flow impact. In order to solve the problem of clogging of the filter screen mesh, a cleaning assembly is provided on the outer side of the first filter screen, and the material of the cleaning three-leaf blade is rubber material. Under the action of water flow, the three-leaf blade rotates to clean the filter screen. The rotation of the three-leaf blade helps to form an inward vortex to guide the fish eggs into the guide tube. At the same time, the three-leaf blade rotates on the guide tube to control the guide tube mouth to enter the flow surface, which has the effect of preventing fish from entering the guide tube or approaching the guide tube.

[0010] Optionally, the inner wall of the cylinder is coated with a matrix that simulates the growth environment of reef fish. The matrix on the cylinder wall can provide adhesion for the sticky fish eggs, supply nutrients, and improve the survival rate of the fish eggs. After the collection is completed, the collector is salvaged ashore, placed vertically with the opening facing upward and shaken, the cover is opened, and the sticky fish eggs adhered to the cylinder wall, the sticky fish eggs that are clumped together, and the scattered non-sticky eggs are collected on one side of the baffle and discharged from the collector.

[0011] The invention is suitable for collecting fish eggs of reef fish, consumes less manpower and material resources, causes less damage to the fish eggs, can realize long-term continuous collection of fish eggs, and improves the efficiency of collecting fish eggs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Figure 1 The device for collecting eggs of reef fish proposed in the embodiment of the present application is shown; Figure 2 A cross-sectional view of a collector provided in an embodiment of the present application is shown; Figure 3 A front view of a device for collecting eggs of reef fishes proposed in an embodiment of the present application is shown; Figure 4 A schematic diagram showing a filter assembly proposed in an embodiment of the present application; Figure 5 The propeller propeller of the device for collecting eggs of reef fish proposed in the embodiment of the present application is shown; Figure 6 A top view of a device for collecting eggs of reef fishes proposed in an embodiment of the present application is shown; Figure 7 A schematic diagram showing a balanced state of a device for collecting eggs of reef fishes proposed in an embodiment of the present application; Figure 8 A schematic diagram showing an unbalanced form of a device for collecting eggs of reef fish proposed in an embodiment of the present application; Fig. 9 A second schematic diagram of the unbalanced form of the device for collecting eggs of reef fish proposed in an embodiment of the present application is shown.

[0013] Explanation of the reference numerals: 1-collector; 2-filter assembly; 3-guide tube; 4-cylinder; 5-second filter screen; 6-suction pipe; 7-water pump; 8-propeller thruster; 9-retractable tube; 10-buoy; 11-float; 12-baffle; 13-cover plate; 201-first filter screen; 202-three-leaf blade; 203-ring. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0015] Embodiment 1: See also Figure 1-Figure 6 , a device for collecting eggs of reef fish, comprising: A collector 1, one end of which has an opening and is provided with a flow guide tube 3, the collector 1 comprises a first cylinder body and a second cylinder body which are detachably connected, and a second filter screen 5 which is inclined to the axis of the first cylinder body is provided at the connection between the first cylinder body and the second cylinder body; An opening is set at one end of the first cylinder and is equipped with a guide tube 3. The other end of the first cylinder has an inclined incision. The second filter screen 5 is adapted to the incision and a cover plate 13 extends outward from the incision. The second cylinder can be inserted into the incision and communicate with the inside of the first cylinder to form a receiving space. A propeller propeller 8 is provided on the second cylinder, and a baffle 12 is provided inside the second cylinder. The baffle 12 can be connected and fixed to the edge of the second filter screen 5.

[0016] The second cylinder has a built-in water pump 7, which is assembled on the side of the baffle 12. The water pump 7 is connected to a water pump 6, which is arranged outside the second cylinder. The first cylinder has a cylinder 4 inside, which is arranged adjacent to the inner wall of the first cylinder and can rotate relative to the inner wall of the first cylinder. The outside of the collector 1 is connected to a float 11 through a telescopic tube 9, and buoys 10 are connected to both sides of the float 11; one end of the float 11 has an opening structure and is concave inward, and the other end of the opening is connected to the telescopic tube 9, and the buoys 10 are arranged on both sides of the float 11 near the connection between the telescopic tube 9 and the float 11.

[0017] The present invention places the collector 1 underwater, and pumps the water in the collector to the outside of the collector 1 through the water pump 7 and the water pumping pipe 6, thereby forming a negative pressure at the opening of the collector 1, and the eggs of reef fish are sucked in and enter the collector 1 through the filter assembly 2 and the guide tube 3. The spiral structure of the guide tube 3 can guide the direction of the water flow, so that it spirals forward. The cylinder 4 in the collector 1 can only rotate due to the limit. Under the impact of the water flow, the cylinder 4 makes a circular motion. The kinetic energy of the water flow is partially converted into the kinetic energy of the cylinder 4, which makes the fish eggs as evenly distributed as possible on the inner wall of the collector 1. In this way, the fish eggs are prevented from being excessively concentrated in the center of the cylinder during the process of collecting and entering the cylinder 4, causing some fish eggs to be inactivated after being compressed. The fish eggs are further dispersed to the inner wall of the cylinder 4, that is, the inner wall direction of the collector 1, which helps the fish eggs to contact the second filter screen 5 in batches during the process of contacting the fish eggs, thereby reducing the damage of the second filter screen 5 to the fish eggs and reducing the probability that the diameter of the compressed part of the fish eggs changes and cannot pass through the second filter screen 5. In addition, by setting the second filter screen 5 to an inclined type, the scheme of rotating the cylinder can be coordinated to reduce the possibility of excessive concentration of fish eggs caused by the centrifugal effect of the collector 1 during the internal movement of the collector 1. This also solves the problem of local blockage of the second filter screen 5 caused by the concentration of fish eggs, thereby improving the filtering effect and filtering efficiency of the second filter screen 5. The fish eggs are evenly distributed inside the collector 1. The second filter screen 5 placed obliquely in the collector 1 is a fine-mesh filter screen, which can prevent fish eggs from entering the water pump 7. The propeller propeller 8 on the outside of the collector 1 can make it move in the water to improve the collection efficiency. In order to maintain balance, the outside of the collector 1 is connected to a ship-shaped float 11, which is placed on the water surface. The center of gravity of the float 11 is at the bottom, which can keep it balanced in the case of large wind and waves. In order to collect fish eggs at different depths in the water, a telescopic tube 9 is used to adjust the depth of the collector 1 in the water. Furthermore, the buoy 10 is a plate structure, which can cooperate with the float 11 to improve the stability of the device in the water. For the surface waves, the float 11 and the buoy 10 can effectively consume and when the buoy 10 contacts the surface waves, it is helpful to guide the water surface and the water body below the buoy 10 to change the flow direction. For example, the water body flowing in the horizontal direction uses the water body waves to cause the buoy 10 to swing, and then the buoy 10 affects the fluid in the horizontal flow direction below it, so that its flow direction changes to a tendency, which helps to cause the fish eggs on the water surface or the upper water layer to move downward, and improve the collection efficiency of the collector 1. The present invention is suitable for the collection of fish eggs of reef fish, consumes less manpower and material resources, and has little damage to the fish eggs. It can realize the long-term continuous collection of fish eggs and improve the efficiency of fish egg collection.

[0018] Embodiment 2: Based on Example 1, the reef fish egg collection device is further optimized: Optionally, the flow guide tube 3 is built with a filter assembly 2, the filter assembly 2 includes a first filter screen 201, the first filter screen 201 is a semicircular structure, there are at least two first filter screens 201 and they are staggered on the inner wall of the flow guide tube 3, and there is a spacing distance between adjacent first filter screens 201. A circular ring 203 fixedly connected to the inner wall of the inlet end of the flow guide tube 3 is provided on the inner wall, a rotatable three-leaf blade 202 is provided inside the circular ring 203, the circular ring 203 has a support rod, the three-leaf blade 202 has a rotating shaft connected to the support rod, and a rotating part is provided at the connection, and the three-leaf blade 202 is provided at the center of the circular ring 203.

[0019] Layered filtration can reduce the damage to the filter screen caused by the impact of water flow. In order to solve the problem of filter mesh clogging, a cleaning component is provided on the outside of the first filter screen 201. The material of the cleaning three-leaf blade 202 is rubber material. Under the action of water flow, the three-leaf blade 202 rotates to clean the filter screen. The rotation of the three-leaf blade 202 helps the water flow to form an inward vortex, guiding the fish eggs into the guide tube 3. At the same time, the three-leaf blade rotates on the guide tube 3, which can control the guide tube mouth to enter the flow surface, which has the effect of preventing fish from entering the guide tube or approaching the guide tube.

[0020] Optionally, the inner wall of the cylinder 4 is coated with a matrix that simulates the growth environment of reef fish. The matrix on the cylinder wall can provide adhesion for the sticky fish eggs, supply nutrients, and improve the survival rate of the fish eggs.

[0021] After the collection is completed, the collector 1 is salvaged ashore, placed vertically with the opening facing upward and shaken, the cover 13 is opened, and the sticky fish eggs adhered to the cylinder wall, the sticky fish eggs adhered into a ball, and the scattered non-sticky eggs are collected on one side of the baffle 12 and discharged from the collector 1.

[0022] Embodiment 3: See also Figure 7-9 As shown, the principle of control device balance: A ship-shaped float is set above the collector 1, and its balance is controlled by using the relative position of the center of gravity and the center of buoyancy. In the balanced state, the center of gravity and the center of buoyancy are in the same straight line, such as Figure 7 ; When collector 1 is unbalanced, such as Figure 8 or Fig. 9 Since the center of gravity and the center of buoyancy are not in the same straight line, a deflection moment is generated, which can restore the device to the state as follows: Figure 7 The equilibrium state is shown.

[0023] The above examples are only for illustrating the technical concept and technical features of the present invention, and cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the essence of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for collecting eggs of reef fish, comprising: A collector (1), wherein one end of the collector (1) has an opening and is provided with a flow guide tube (3), characterized in that: the collector (1) comprises a first cylinder and a second cylinder that are detachably connected, and a second filter screen (5) that is inclined to the axis of the first cylinder is provided at the connection between the first cylinder and the second cylinder; One end of the first cylinder is provided with an opening and is equipped with a guide tube (3); the other end of the first cylinder has an inclined cutout; the second filter screen (5) is adapted to the cutout; a cover plate (13) extends outward from the cutout; the second cylinder can be inserted into the cutout and communicate with the inside of the first cylinder to form a receiving space.

2. A device for collecting reef fish eggs according to claim 1, characterized in that: The second cylinder is provided with a propeller propeller (8).

3. The device for collecting reef fish eggs according to claim 1, characterized in that: A baffle (12) is provided inside the second cylinder, and the baffle (12) can be connected and fixed to the edge of the second filter screen (5).

4. The device for collecting eggs of reef fish according to claim 3, characterized in that: The second cylinder has a built-in water pump (7), the water pump (7) is assembled on the side of the baffle (12), the water pump (7) is connected to a water pumping pipe (6), and the water pumping pipe (6) is arranged outside the second cylinder.

5. The device for collecting eggs of reef fish according to claim 1, characterized in that: A cylinder (4) is provided inside the first cylinder body, and the cylinder (4) is arranged adjacent to the inner wall of the first cylinder body and is rotatable relative to the inner wall of the first cylinder body.

6. The device for collecting eggs of reef fish according to claim 1, characterized in that: The collector (1) is connected to a float (11) on the outside via a telescopic tube (9), and buoys (10) are connected to both sides of the float (11); One end of the float (11) has an open structure and is recessed inwardly, the other open end of the float (11) is connected to the telescopic tube (9), and the buoy (10) is arranged on both sides of the float (11) near the connection between the telescopic tube (9) and the float (11).

7. The device for collecting eggs of reef fish according to claim 1, characterized in that: The flow guide tube (3) has a filter assembly (2) built therein, the filter assembly (2) comprising a first filter screen (201), the first filter screen (201) being a semicircular structure, there being at least two first filter screens (201) arranged alternately on the inner wall of the flow guide tube (3), and there being a spacing distance between adjacent first filter screens (201).

8. The device for collecting eggs of reef fish according to claim 7, characterized in that: A circular ring (203) fixedly connected to the inner wall of the inlet end of the guide tube (3) is provided on the inner wall, a rotatable three-leaf blade (202) is provided inside the circular ring (203), the circular ring (203) has a support rod, the three-leaf blade (202) has a rotating shaft connected to the support rod, and a rotating part is provided at the connection, and the three-leaf blade (202) is arranged at the center of the circular ring (203).

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